02nd week of 2009 patent applcation highlights part 20 |
Patent application number | Title | Published |
20090009209 | Multiple Point Gate Oxide Integrity Test Method and System for the Manufacture of Semiconductor Integrated Circuits - A method for testing a semiconductor wafer using an in-line process control, e.g., within one or more manufacturing processes in a wafer fabrication facility and/or test/sort operation. The method includes transferring a semiconductor wafer to a test station. The method includes applying an operating voltage on a gate of a test pattern on a semiconductor wafer using one or more probing devices. The method includes measuring a first leakage current associated with the operating voltage. If the measured first current is higher than a first predetermined amount, the device is an initial failure. If the measured first current is below the first predetermined amount, the device is subjected to a second voltage. The method includes applying the second voltage on the gate of the test pattern on the semiconductor wafer and measuring a second leakage current associated with the second voltage. If the second measured leakage current is higher than a second predetermined amount, the device is an extrinsic failure. If the second measured leakage current is below the second predetermined amount, the device a good device. The method provides a way to monitor gate oxide integrity and/or process stability using extrinsic measurements according to a specific embodiment. The method includes determining a breakdown voltage associated with the second measured leakage value. In a preferred embodiment, the second measured leakage current is characterized as extrinsic information and the breakdown voltage is characterized as intrinsic information. | 2009-01-08 |
20090009210 | Scan-Testable Logic Circuit - Logic circuit comprising—at least a first combinational logic circuit | 2009-01-08 |
20090009211 | Microcomputer and functional evaluation chip - A microcomputer for functioning according to operation modes includes: a mode counter that counts the number of times of level change in a signal applied to a mode setting terminal; a mode decoder that decodes output data of the mode counter to output a mode signal, which represents one operation mode; a clock input terminal; a data terminal through which serial data is inputted synchronously with a serial clock signal applied to the clock input terminal; a serial-to-parallel conversion unit that converts the serial data into parallel data and stores the parallel data in an input data buffer; and a switching means that switches to a state that a CPU can access to the input data buffer in a test mode. In the test mode, test instruction data is capable of being inputted from an external circuit. | 2009-01-08 |
20090009212 | Calibration system and method - A system and method to calibrate an output driver impedance of an output driver based on a termination device of a controller. | 2009-01-08 |
20090009213 | Calibration circuit, semiconductor device including the same, and data processing system - A calibration circuit includes: replica buffers; an up-down counter that changes impedance codes of the replica buffers; latch circuits each holding the impedance codes; an end-determining circuit that activates the latch circuits in response to a completion of impedance adjustments of the replica buffers; and a 32 tCK cycle counter that forcibly activates the latch circuits in response to a lapse of a predetermined period since issuance of the calibration command. Thereby, even when the adjustment is not completed during one calibration period, a subsequent calibration operation can be executed from a previous point. | 2009-01-08 |
20090009214 | Semiconductor device reducing power consumption in standby mode - A voltage supply control circuit is arranged between a true ground voltage and a pseudo ground line. In an active mode, first and second control signals are at the “H” and “L” levels, respectively. In response to this, a first switch is turned on so that a first node is electrically coupled to a power supply voltage, and attains the “H” level. Further, a second switch is turned on to couple electrically the ground voltage to a second node. In a standby mode, the first and second control signals are at the “L” and “H” levels, respectively. In response to this, a third switch is turned on to couple electrically the first and second nodes together. Since the power supply voltage was electrically coupled to the first node according to the turn-on of the first switch in the active mode, the path of the control signal including the first node to the switch has accumulated charged charges. | 2009-01-08 |
20090009215 | Integrated Circuit with Multidimensional Switch Topology - An FPGA needs extremely large numbers of switches in its wiring architecture and therefore shows low logic density and low operating speed. This tendency becomes increasingly evident with high integration FPGAs. 3-dimensional FPGAs are getting attention for potential improvements in their operating speed and logic density. However, 3-dimensional integration processes have poor yield and are difficult to adapt for the production of devices with fine features. In addition, difficulty in heat radiation imposes limits on the number of stacks. The present invention exploits advantages of the 3-dimensional FPGA to deliver FPGAs with high speed/high integration and which resolves difficulty in manufacturing processes. The present invention solves problems by proposing a design method for an FPGA in which a high dimensional FPGA switch topology is embedded in a lower dimensional integrated circuit and a semiconductor integrated circuit including an FPGA in which a high dimensional FPGA switch topology is embedded in a lower dimensional integrated circuit. | 2009-01-08 |
20090009216 | RECONFIGURABLE INTEGRATED CIRCUITS WITH SCALABLE ARCHITECTURE INCLUDING A PLURALITY OF SPECIAL FUNCTION ELEMENTS - An integrated circuit (IC) includes a number of function blocks (FB), of which at least one is re-configurable. Each of the FBs may be a reconfigurable function or a non-reconfigurable function or recursively expanded with additional “nested” function blocks. The IC further includes a number of input pins, a number of output pins, an adder, and a number of crossbar devices. The elements, at least at the IC level, are coupled in a manner such that all input signals are provided to the FBs through a first subset of the crossbar devices, all internal signals are routed from one FB to another FB through a second subset of crossbar devices, and all output signals are routed from the FBs to the output pins through a third subset of crossbar devices. To increase routability and speed each of the crossbar device output has a single fanout. Additionally, each of the crossbar devices may provide only one input to each other crossbar device. In some embodiments, an FB may include special function elements, and optionally, (cascaded) selection paths. Other embodiments may also be described. | 2009-01-08 |
20090009217 | TRANSFORMATION OF AN INPUT SIGNAL INTO A LOGICAL OUTPUT VOLTAGE LEVEL WITH A HYSTERESIS BEHAVIOR - It is described a circuit and a method for transforming an input signal into a logical output. The circuit ( | 2009-01-08 |
20090009218 | Literal Gate Using Resonant Tunneling Diodes - The present invention relates to a literal gate using resonant tunneling diodes; and, more particularly, to a literal gate using only resonant tunneling diodes (RTDs). | 2009-01-08 |
20090009219 | Reducing Power Consumption In An Amplification Stage Driving A Sample And Hold Circuit While Maintaining Linearity - An input signal to be sampled by a sample and hold circuit is amplified separately by two amplifiers. The output of the first amplifier is provided to a boost circuit to maintain the impedance of a sampling switch contained in a signal dependent boost switch substantially constant. The output of the second amplifier is sampled via the sampling switch, and the sample is stored in a storage element. The second amplifier drives a reduced load, and may be implemented as a low bandwidth, low power amplifier to reduce overall power consumption. | 2009-01-08 |
20090009220 | Signal generating apparatus, periodic-signal observing system, integrated circuit, periodic-signal observing method, and method of testing integrated circuit - A signal generating apparatus having an LSI circuit in which a plurality of cycle-observing signals are generated to be output via an I/O circuit to a device outside the LSI circuit in order to observe a prescribed periodic signal in the LSI circuit. The apparatus includes: a frequency-dividing circuit that frequency-divides the periodic signal at a preset frequency division ratio; and a delay circuit that imparts a prescribed phase difference to the signal to be frequency-divided by the frequency-dividing circuit, thereby obtaining a plurality of signals that differ in phase from one another. | 2009-01-08 |
20090009221 | METHOD AND APPARATUS FOR SYNCHRONIZING A CLOCK GENERATOR IN THE PRESENCE OF JITTERY CLOCK SOURCES - There are provided, in a clock generator for generating a plurality of output clock signals, an apparatus and method for synchronizing the clock generator to an input reference clock in the presence of a jittery input clock provided to the clock generator from a PLL. The clock generator and the PLL each have a divider with the same ratio. The apparatus includes a synchronizer ( | 2009-01-08 |
20090009222 | CLOCK GENERATION CIRCUIT, RECORDING DEVICE AND CLOCK GENERATION METHOD - A clock generation circuit is provided that multiplies an input signal of a specific frequency by a specific multiplication factor and generates an output clock signal. The clock generation circuit includes a PLL circuit that multiplies the input signal and generates the output clock signal, and a correction circuit that changes the multiplication factor of the PLL circuit. The correction circuit changes the PLL circuit multiplication factor by increasing or decreasing the specific multiplication factor, the change being performed only during a correction interval for each correction cycle, the correction cycle being longer than one cycle of the input signal, and being performed such that a time difference between an input synchronizing signal synchronized with the input signal and an output synchronizing signal synchronized with the output clock signal is reduced. The PLL circuit multiplies the input signal by the changed multiplication factor during the correction interval. | 2009-01-08 |
20090009223 | PLL CIRCUIT AND SEMICONDUCTOR INTEGRATED DEVICE - A charge pump circuit comprises two MOS transistors serially connected between a power supply voltage VDD and ground, a switch SW | 2009-01-08 |
20090009224 | Multiphase DLL using 3-edge phase detector for wide-range operation - The invention discloses a new architecture of multiphase delay-locked loop (DLL) with innovative 3-edge phase detector (3-edge PD), which compares the VCDL's first delay interval and the last delay interval to send an Up pulse or a Dn pulse to adjust the interval among those delay clock phases. The DLL may achieve both wide-range operation and multiple clock phase generation, and is also immune to multi-selection problem. | 2009-01-08 |
20090009225 | CLOCK SIGNAL GENERATOR - A clock signal generator for generating clock signals to an integrated circuit. The clock signal generator comprises a delay-locked loop adapted to generate a plurality of mutually delayed clock phases based on a reference clock signal. The delay-locked loop is further adapted to select one of the plurality of clock phases as an output signal of the delay-locked loop in response to a first control signal, wherein said output signal is a first clock signal. The clock signal generator further comprises an inverter arranged to generate an inverse of the output signal and a multiplexer unit arranged to, in response to a clock-invert signal, forward either the output signal or the inverse of the output signal as a second clock signal. | 2009-01-08 |
20090009226 | System and method for implementing a swap function for an IQ generator - A system and method for implementing an IQ generator includes a master latch that generates an I signal in response to a clock input signal, and a slave latch that generates a Q signal in response to an inverted clock input signal. A master selector is configured to provide a communication path from the master latch to the slave latch, and a slave selector is configured to provide a feedback path from the slave latch to the master latch. The foregoing I and Q signals are output directly from the respective master and slave latches without any intervening electronic circuitry. | 2009-01-08 |
20090009227 | High-Power Electric Pulse Generator - A high power electric pulse generator includes a charge storage device, a high voltage source for charging the charge storage device, a first photoconductor element connected to the reference potential and to the storage device, a second photoconductor element connected to the storage device and to a useful load, a first light source for delivering a pulse of light to the first photoconductor, a second light source for delivering a pulse of light to the second photoconductor and a synchronization device for synchronizing the emission delay between the first light source and the second light source. The first photoconductor and the second photoconductor are passive semiconductor elements with a linear regime forming photosensitive switches, with the first and second photoconductors being doped silicon photoconductors. | 2009-01-08 |
20090009228 | CLOCK GENERATING APPARATUS - A clock generating apparatus includes a clock generator and a controllable delay line. The clock generator receives an external clock signal and generates multiple clock signals having different phases by delaying the external clock signal. The controllable delay line receives one of the multiple clock signals as a first clock signal and delays the first clock signal by a first interval in response to an externally applied control signal. The delayed first clock signal is input to the clock generator. | 2009-01-08 |
20090009229 | HIGH/LOW VOLTAGE TOLERANT INTERFACE CIRCUIT AND CRYSTAL OSCILLATOR CIRCUIT - A high/low voltage tolerant interface circuit and a crystal oscillator circuit using the same are provided herein. The interface circuit includes a first transistor, a bulk-voltage generator module and an bias module. The first transistor includes a gate, a first source/drain, a bulk coupled to the first source/drain of the first transistor and a second source/drain coupled to an input node. The bulk-voltage generator module is, used to determine whether a first voltage or a predetermined voltage is being provided to the bulk of the first transistor according to the voltage of the input node. The bias module is coupled to the gate of the first transistor. The bias module is used to provide an bias voltage to the gate of the first transistor and makes the first transistor conduct in order to control the voltage of the second source/drain voltage of the first transistor. | 2009-01-08 |
20090009230 | Semiconductor device - A semiconductor device includes a level shift circuit to convert an input signal having an amplitude from a first power supply potential to a second power supply potential to a signal having an amplitude from the first power supply potential to a third power supply potential, a first output portion to output voltage generated from the third power supply potential to an output terminal based on the output of the level shift circuit, the first output portion including a NMOS transistor, and a second output portion to output voltage generated from the third power supply potential to an output terminal based on the output of the level shift circuit, the second output portion including a PMOS transistor. | 2009-01-08 |
20090009231 | DEVICE AND METHOD FOR POWER SWITCH MONITORING - A device monitors at least one power switch which is series-mounted with a logic core between a first and a second potential. A connection point between the switch and logic core is carried to a third potential. The switch is biased by a biasing potential. The device includes a feedback control module mounted between first and second potentials which is capable of generating a set potential representative of the third potential variation. A biasing module of the power switch is mounted between the first and second potentials, and generates a biasing potential based on the set potential. The biasing potential linearly varies with the decrease of the third potential. | 2009-01-08 |
20090009232 | Power Switches - A switching device suitable for operation in temperatures over 150 C comprises first 1 and second 2 transistors, the source | 2009-01-08 |
20090009233 | METHOD AND SYSTEM FOR CONTROLLING A HANDHELD ELECTRONIC DEVICE | 2009-01-08 |
20090009234 | Proportional Settling Time Adjustment For Diode Voltage And Temperature Measurements Dependent On Forced Level Current - A temperature sensor circuit and system providing accurate digital temperature readings using a local or remote temperature diode. In one set of embodiments a change in diode junction voltage (ΔV | 2009-01-08 |
20090009235 | Semiconductor memory device - A semiconductor memory device includes a memory cell array and a voltage generation circuit for generating a voltage applied to the memory cell array, in which a plurality of drive MOS transistors having different width dimensions are selectively connected in parallel between an output line and the ground. The voltage is adjusted in response to the surrounding temperature in such a way that a prescribed number of drive MOS transistors selected from among the plurality of MOS transistors are normally and simultaneously driven. Thus, it is possible to precisely adjust the voltage in units of adjustment corresponding to differences of width dimensions without degrading the performance of the semiconductor memory device in a low current consumption mode. | 2009-01-08 |
20090009236 | Step-down circuit with stabilized output voltage - The present invention provides a semiconductor integrated circuit device equipped with a negative feedback amplifier circuit or a step-down circuit which realizes stabilization of an output voltage effectively in response to a variation in power supply voltage. A constant current source is used to cause a bias current for setting current consumption to flow in a differential amplifying MOSFET. A capacitor is provided between an external power supply voltage and a predetermined circuit node to thereby detect a reduction in the external power supply voltage. An operating current of the differential amplifying MOSFET is increased through the use of a current flowing in the capacitor due to such an external power variation, thereby executing the operation of stabilizing an output voltage corresponding to the reduction in the external power supply voltage. | 2009-01-08 |
20090009237 | Boosting circuit and boosting method - A boosting circuit includes a boosting capacitor to which an input voltage is applied; a smoothing capacitor to which a boosted voltage is applied; a discharging MOS transistor configured to connect said boosting capacitor and said smoothing capacitor in a discharging operation during a boosting operation period such that charge stored in said boosting capacitor is discharged to said smoothing capacitor; and a charging MOS transistor configured to apply the input voltage to said boosting capacitor in a charging operation during the boosting operation period to charge up said charging capacitor. A back gate of said charging MOS transistor and a back gate of said discharging MOS transistor are connected to a common node, and said common node is connected to different voltages in the charging operation and the discharging operation. | 2009-01-08 |
20090009238 | Semiconductor integrated circuit - Disclosed herein is a semiconductor integrated circuit including a stoppable circuit unit configured to be alternately switched between a stopped state and an operating state; a first voltage line configured to apply a first voltage to the stoppable circuit unit when the stoppable circuit unit is in the operating state; a second voltage line configured to apply the first voltage to the stoppable circuit unit when the stoppable circuit unit is in a transient state of switching from the stopped state to the operating state; and a third voltage line configured to apply a second voltage to the stoppable circuit unit. | 2009-01-08 |
20090009239 | Low glitch offset correction circuit for auto-zero sensor amplifiers and method - An instrumentation amplifier includes first ( | 2009-01-08 |
20090009240 | Amplifier Circuit - An amplifier circuit block and a compensation circuit block are provided. The amplifier circuit block includes an analog adder for subtracting an output signal of the compensation circuit block from an input signal and an amplifier circuit operating in a wide band. The compensation circuit block includes an amplifier circuit with a low offset voltage and a low noise in a low frequency region, an analog adder block for subtracting an output signal of the amplifier circuit from an output signal of the amplifier circuit and generating a differential signal thereof, and a feedback circuit block for negatively feeding back the differential signal to the analog adder. The amplifier circuit block can reduce the offset voltage and the low-band noise by the negative feedback of the differential signal, and at the same time, the operation band of the entire amplifier circuit can be decided by the characteristic of the amplifier circuit. | 2009-01-08 |
20090009241 | Power amplifier using power combiner - Disclosed herein is a power amplifier using a power combiner, which is capable of minimizing power loss and improving efficiency of the power amplifier with a large output power, by combining powers generated by a plurality of power amplifiers used in a wireless communication system using a transmission line transformer. | 2009-01-08 |
20090009242 | LINE DRIVER CAPABLE OF AUTOMATICALLY ADJUSTING OUTPUT IMPEDANCE - A line driver includes: a differential amplifier for amplifying an input signal to generate an output signal; first and second series resistors coupled respectively to output terminals of the differential amplifier and through which the output signal is output; first and second negative-feedback resistors each coupled between a respective input terminal and a respective output terminal of the differential amplifier; first and second positive-feedback variable resistors each coupled between a respective input terminal of the differential amplifier and a respective one of the first and second series resistors; and an adjusting unit coupled to the first and second positive-feedback variable resistors to adjust a resistance thereof with reference to the output signal. | 2009-01-08 |
20090009243 | Methods and Apparatus for Controlling Leakage and Power Dissipation in Radio Frequency Power Amplifiers - A radio frequency power amplifier (RF PA) apparatus includes an RF PA and a waveform converter. The waveform converter is configured to receive a sinusoidal RF signal and generate a nonsinusoidal RF signal, which is used to drive an active device (e.g., a field effect transistor (FET) or bipolar junction transistor (BJT)) of the RF PA. The nonsinusoidal RF signal, which may comprise a square wave or a substantially-square wave signal, has signal characteristics that result in less leakage through the active device's input-output parasitic capacitance, compared to the leakage that would result if the sinusoidal RF signal was used to drive the active device. The leakage control methods and apparatus of the present invention may be advantageously employed in a variety of applications including, for example, RF polar transmitters. | 2009-01-08 |
20090009244 | HIGH-FREQUENCY CIRCUIT - The potential of a source terminal of a transistor is fixed; a load is connected to a drain terminal of the transistor; and an input signal is received by a gate terminal of the transistor. A series circuit including an inductor and a capacitor connected in series is provided between a connection point of the drain terminal of the transistor and the load and an output terminal of a high-frequency circuit. A band-pass filter having a prescribed characteristic is configured by an output equivalent circuit expressing an output impedance of the transistor, the load, and the series circuit. | 2009-01-08 |
20090009245 | Circuit for Adjusting an Impedance - The invention relates to a circuit for adjusting an impedance between two terminals, said impendance including the input impedance of the circuit. The aim of the invention is to enlarge the adjustment range and to stabilize—the operating behavior of such a circuit. For this purpose, the circuit comprises amplifiers, adjusting means with which amplification of at least one amplifier and/or the circuit can be changed in general and the impedance between the two terminals can be modified by influencing the one or more adjusting means. | 2009-01-08 |
20090009246 | ELECTRONIC CIRCUIT - An electronic circuit includes a differential amplifier circuit, a first smoothing circuit, a second smoothing circuit and a first switch. The differential amplifier circuit receives a digital input signal and a reference signal. The first smoothing circuit smoothes the digital input signal with a first capacitance value. The second smoothing circuit smoothes the digital input signal with a second capacitance value larger than the first capacitance value. The first switch selects one of output signals from the first smoothing circuit and the second smoothing circuit as the reference signal. | 2009-01-08 |
20090009247 | DIFFERENTIAL AMPLIFIER AND SAMPLING AND HOLDING CIRCUIT - Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to between the first gates of the first and second transistors, and the sources of the first and second transistors being connected in common to a first reference potential; first and second load circuits each connected to each of drain sides of the first and second transistors; a detection circuit detecting a common-mode voltage between ones of drain sides of the first and second transistors; and a comparison and amplification circuit amplifying the common-mode voltage in comparison with a second reference potential and supplying an output signal thereof to both of the second gates of the first and second transistors. | 2009-01-08 |
20090009248 | INPUT BUFFER WITH OPTIMAL BIASING AND METHOD THEREOF - A method and circuit of a biased input buffer is described to maximize the quality in the output signals. The input buffer includes a first stage for receiving differential input signals and generating differential internal signals as biased in response to an averaging of the differential internal signals. The input buffer further includes a second stage coupled to the differential internal signals and configured to generate differential output signals. A memory device includes a memory array with the respective input buffer. Differential input signals are received and differential internal signals are generated as biased in response to an averaging of the differential internal signals. Differential output signals are generated in a second stage from the differential internal signals. | 2009-01-08 |
20090009249 | Input Stage - An input stage receives a differential input signal at first and second input nodes and provides a differential output current at first and second output nodes. The differential output current includes a component taken from the input nodes through first and second impedances, and an additional component generated in response to a sample of the voltage of the differential input signal. A transconductance cell having cross-coupled inputs may generate the additional component of the output current. | 2009-01-08 |
20090009250 | Low Noise Amplifier - For a first transistor, a source thereof is coupled to an input terminal and a drain thereof is coupled to an output terminal. A first variable impedance circuit is arranged between a gate of the first transistor and ground, and the impedance thereof is changed according to a first control signal. A second variable impedance circuit is arranged between the gate and the source of the first transistor, and the impedance thereof is changed according to a second control signal. Furthermore, an impedance circuit is arranged between the gate of the first transistor and a power supply. The ratio of the impedances of the first and second variable impedance circuits can be set to an arbitrary value according to the first and second control signals in order to change the gain of the low noise amplifier. As the result, the generation of unwanted thermal noise can be prevented. | 2009-01-08 |
20090009251 | FEEDBACK LIMITER WITH ADAPTIVE TIME CONTROL - The invention relates to a compressor and method for amplifying an input signal with a controlled gain. An output signal representing the input signal is amplified by an initial gain and a signal level of the input signal or of the output signal is compared with a threshold level. If the signal level is below the threshold level, the initial gain value is updated using an adaptive control characteristic, and if the signal level is above the threshold level, the initial gain value is updated using a fixed control characteristic or an adaptive control characteristic respectively. The adaptive control characteristic is dependent on the signal level and the fixed control characteristic is independent from the signal level. | 2009-01-08 |
20090009252 | RF Variable Gain Amplifier - A RF variable gain amplifier with an extended linear tuning range is disclosed. The variable gain amplifier employs a wide swing cascode mirror formed by two cascode transistors and two gain transistors. The two cascode transistors track each others so are the two gain transistor. The gain transistors operate on the saturation region. | 2009-01-08 |
20090009253 | ANALOG CIRCUIT - A resistor ( | 2009-01-08 |
20090009254 | CURRENT SENSE AMPLIFIER FOR VOLTAGE CONVERTER - A thermal calibration circuit for adjusting the gain of a variable gain amplifier, the thermal calibration circuit comprising an interface for receiving a signal that varies with temperature and for providing a signal related to the variation of the temperature; a variable gain amplifier having an input and an output; the signal related to the variation of the temperature being selectively coupled to the input; a circuit at the output of the variable gain amplifier for developing a first current proportional to a difference between a current developed at the output of the variable gain amplifier and a reference current; and the first circuit driving a further circuit to produce a gain control signal for adjusting the gain of the variable gain amplifier. | 2009-01-08 |
20090009255 | Unilateral feedback power amplifier and method for realizing the same - A unilateral feedback power amplifier utilizes new feedback techniques and devices to make the amplified high-frequency signal unilateral, let the output power, power gain and impedance matching simultaneously accomplish the optimal values, and enhance the stability of the system. In this feedback amplifier, a generalized multi-port feedback circuit is in shunt with the input terminal and the output terminal of the power transistor. This generalized multi-port feedback circuit receives an amplified high-frequency signal and eliminates the reverse admittance of the amplified high-frequency signal to let the admittance value of the output amplified high-frequency signal approach zero so as to be unilateral. Moreover, the generalized multi-port feedback power amplifier differs from the conventional power amplifier of cascaded architecture in that the ground terminal of the power transistor is directly connected to the system ground. Therefore, the heat-radiating problem of the power transistor can be greatly improved. | 2009-01-08 |
20090009256 | VARIABLE-FREQUENCY OSCILLATOR - There is provided a frequency-variable oscillator that varies, even when a frequency of an input signal is varied, a frequency of an oscillation signal according to the varied frequency of the input signal. A frequency-variable oscillator according to an aspect of the invention includes: a voltage-to-current converter circuit converting a voltage level of an input signal into a current level within a predetermined range; and an oscillator circuit varying a frequency according to the current level from the voltage-to-current converter circuit and oscillating the varied frequency. | 2009-01-08 |
20090009257 | Varactor Trimming Arrangement - Implementations are presented herein that relate to circuit arrangements that employ the use of a varactor. | 2009-01-08 |
20090009258 | Enhanced Spectral Keying for Wireless Ultra Wideband Communications - Methods provide for the amount of information encoded by spectral keying into a UWB symbol having a plurality of modulation symbol times, to be increased by operating two or more frequency band carriers simultaneously during at least one of a plurality of modulation symbol times. In one aspect of the present invention, once a frequency resource, such as a carrier, has been used during a given modulation symbol time, those frequency resources are not used again within that UWB symbol. A method of transmitting symbols, includes providing ( | 2009-01-08 |
20090009259 | ANGLE MODULATOR - An angle modulator having an excellent noise characteristic and an excellent distortion characteristic independent of an unwanted wave component of an optical modulation signal is provided. The angle modulator ( | 2009-01-08 |
20090009260 | DIRECTIONAL COUPLERS FOR RF POWER DETECTION - Very small size true directional couplers have a coupling coefficient that is independent on load VSWR. The coupler uses coupled inductors with a compensation circuit including a resistor and a capacitor, or just a capacitor. Wideband operation is suitable for many portable applications such as power detection and control for GSM, DCS-PCS, CDMA/WCDMA, Bluetooth, and WLAN systems. | 2009-01-08 |
20090009261 | Printed circuit board having impedance-matched strip transmission line - A printed circuit board (PCB) including an impedance-matched strip transmission line includes a strip transmission line including a main line and at least one pair of branch lines branching off from the main line. An upper ground layer is disposed over the strip transmission line and has upper opening parts corresponding in position to the branch lines. A lower ground layer is disposed under the strip transmission line and has lower opening parts corresponding in position to the branch lines. The upper and lower opening parts are symmetric about the branch lines of the strip transmission line. | 2009-01-08 |
20090009262 | Electrical circuit and component with said circuit - An electrical circuit that includes an electric four-terminal network is disclosed. The electric four-terminal network includes a first electrical port with a first terminal and a second terminal and a second electrical port with a first terminal and a second terminal. The electrical circuit also includes a first shunt branch between the second terminal of first electrical port and ground. | 2009-01-08 |
20090009263 | Duplexer - A duplexer includes an antenna terminal, a transmit filter, and a receive filter. The receive filter includes a first sub-filter that includes one or more resonators, and a second sub-filter including a double mode surface acoustic wave (DMS) filter. The second sub-filter is downstream of the first sub-filter relative to the antenna. | 2009-01-08 |
20090009264 | Delay Line - A delay line having a first delay circuit and a second delay circuit. The first delay circuit consists of a band-pass delay line having a first input terminal and an output terminal and other delay lines. The second delay circuit has a hybrid coupler equipped with a second input terminal, a first output terminal, a second output terminal, and an isolation terminal, a first reactance section connected with the first output terminal, and a second reactance section connected with the second output terminal. Furthermore, the output terminal of the first delay circuit is electrically connected with the second input terminal of the hybrid coupler of the second delay circuit. | 2009-01-08 |
20090009265 | Electronic phase reflector with enhanced phase shift performance - A varactor based phase shifter that increases phase shift range using an impedance transformer to impart a low characteristic impedance between an input port and a reference node port. The characteristic impedance across the port is therefore less than the characteristic impedance would be otherwise, and the phase shift range is increased. In one embodiment, a simple reflection phase modifier can be used in a phased array using space feed parasitic antenna elements. This type of analog varactor reflection phase modifier can provide fine phase resolution, and the array can thus be used for low-loss adaptive beam forming. | 2009-01-08 |
20090009266 | Antenna Damping Circuit and High Frequency Receiver Employing Same - An antenna damping circuit in which the frequency characteristics of damping amount can be made substantially flat by providing a resistor (Ra) between PIN diodes (D | 2009-01-08 |
20090009267 | Electronic Component - The magnetic material constituting a magnetic portion is a ferrite mainly containing 31-42 mol % of NiO, 2-10 mol % of ZnO, 43-48 mol % of Fe | 2009-01-08 |
20090009268 | Acoustic wave sensor assembly utilizing a multi-element structure - An acoustic wave sensor assembly includes piezoelectric material, a first acoustic wave resonator element structure mounted on the piezoelectric material for interacting with an electrical signal, the acoustic wave resonator element structure being operable to interact with an acoustic wave propagating within the piezoelectric material to produce a first frequency response. Further acoustic wave resonator element structures are mounted on the piezoelectric material for interacting with electrical signals, the further acoustic wave resonator element structures being operable to interact with further acoustic waves propagating within the piezoelectric material to produce subsequent frequency responses. The first acoustic wave resonator element structure and further acoustic wave resonator element structures are combined to form a ladder or lattice filter network to produce an overall frequency response. Sensitive areas are mounted on the piezoelectric material and associated with the acoustic wave resonator element structures which, if predetermined effects to be sensed or detected are present, are modified thereby to control the nature of the frequency responses with resultant specific perturbations of the combined frequency response and thereby provide information with respect to the predetermined effects to be sensed or detected. | 2009-01-08 |
20090009269 | Resonator System Such As A Microresonator System And Method Of Making Same - A resonator system such as a microresonator system and a method of making same are provided. In at least one embodiment, a mechanical circuit-based approach for boosting the Q of a vibrating micromechanical resonator is disclosed. A low Q resonator is embedded into a mechanically-coupled array of much higher Q resonators to raise the functional Q of the composite resonator by a factor approximately equal to the number of resonators in the array. The availability of such a circuit-based Q-enhancement technique has far reaching implications, especially considering the possibility of raising the functional Q of a piezoelectric resonator by merely mechanically coupling it to an array of much higher Q capacitively-transduced ones to simultaneously obtain the most attractive characteristics of both technologies: low impedance from the piezo-device and high-Q from the capacitive ones. Furthermore, the manufacturing repeatability of such micromechanical resonator-based products is enhanced. | 2009-01-08 |
20090009270 | Stripline Arrangement and a Method for Production Thereof - The present invention relates to a stripline arrangement ( | 2009-01-08 |
20090009271 | Compact broadband non-contacting transmission line junction - A transmission line junction for a coaxial conductor line has mating ends of interfitting cores, sleeves, and dielectrics for communicating broadband signals through the junction that blocks DC currents and voltages, the junction maintaining a quarter wavelength junction length for high frequency coupling while providing improved low frequency coupling across the junction. | 2009-01-08 |
20090009272 | COAXIAL ATTENUATOR - The present invention relates to a coaxial device comprising:
| 2009-01-08 |
20090009273 | Hall Effect Switching Circuit and Controlling Method for same - A Hall effect switching circuit includes a magnetic south pole detecting unit configured for detecting and judging a magnetic field intensity of a magnetic south pole to produce a first triggering signal; a magnetic north pole detecting unit configured for detecting and judging a magnetic field intensity of a magnetic north pole to produce a second triggering signal; and a detecting and controlling unit connected to the magnetic south pole detecting unit and the magnetic north pole detecting unit. The detecting and controlling unit is configured for judging a polarity of a magnetic field according to the first triggering signal and the second triggering signal, and selecting a triggering signal corresponding to the polarity of the magnetic field as a switching signal of the Hall effect switching circuit in a predetermined detect and setup time after starting the Hall effect switching circuit. | 2009-01-08 |
20090009274 | SHORT-CIRCUIT INDICATOR FOR ELECTRICAL LINES FOR POWER DISTRIBUTION - A short-circuit indicator is provided for arrangement on an electrical line for electrical power distribution which includes a current transformer. The current transformer has an induction coil and an iron yoke for surrounding the electrical line to be monitored for a short-circuit current. The induction coil is seated on a base web of a U-shaped first yoke part. A second yoke part is connected in the form of a joint which can move between a closed position and an open position to one of two U-limbs of the first yoke part. The second yoke part forms a magnetic return path element for the first yoke part in the closed position. The first yoke part is split into two essentially L-shaped parts in the area of the base web to which the induction coil is fitted. | 2009-01-08 |
20090009275 | Ignition coil - An ignition coil includes a primary coil ( | 2009-01-08 |
20090009276 | TRANSFORMER MOUNTED ON CIRCUIT BOARD WITH MAIN BODY SURROUNDED BY INSULATING COVER - A transformer | 2009-01-08 |
20090009277 | Filtering choke arrangement - DC choke arrangement of a power transformer, especially of a frequency converter, provided with a DC circuit and connected to an AC electricity network, to limit the harmonics of the network current taken by an appliance from the AC network, in which DC choke arrangement is at least one choke (Ldc+, Ldc−), which is arranged in the magnetic core, which contains pillar parts and yoke parts ( | 2009-01-08 |
20090009278 | INDUCTOR - An inductor includes: a substrate; an insulator layer; a conductive coil; and a permeability-enhancing film of a multi-layer structure. The multi-layer structure includes at least one repeating unit that has at least two layers. The two layers exhibit an exchange-coupling effect and include a first ferromagnetic layer of a first ferromagnetic material and an exchange-coupling layer. | 2009-01-08 |
20090009279 | High-Voltage Generating Transformer for Discharge Lamp Lighting Apparatus - A high-voltage generating transformer for a discharge lamp lighting apparatus according to the present invention includes a rodlike core; a secondary winding bobbin that is divided into a plurality of sections, and where the core is disposed in the central portion thereof; a secondary winding part wound on the secondary winding bobbin, divided between the plurality of sections of the bobbin; a primary winding bobbin disposed around the outer periphery of the secondary winding part; and a primary winding part wound on the primary winding bobbin; wherein the primary winding bobbin is changed in thickness every section or every plurality of sections of the second winding part such that the bobbin has a thickened thickness on the side where the potential difference between the primary winding part and the secondary winding part is high, and the bobbin has a thinned thickness on the side where the potential difference is low. | 2009-01-08 |
20090009280 | Magnetic core for current sensor having high magnetic saturation - A magnetic core according to the present invention is used in a current sensor for detecting amount of current flowing through a conductor by a Hall element. The magnetic core is made of a resin material, in which a granular magnetic material is dispersed, and is shaped to form a circular magnetic flux passage therein by injection molding. The magnetic core is formed by laminating plural layers in an inside to outside direction of the magnetic core, and a magnetic material content is made higher in the outer layers than in the inner layers. In this manner, uniformity of the magnetic flux density in the core is improved. Alternatively, the magnetic core is made by laminating plural layers having respective magnetic material content ratios in its thickness direction to adjust magnetic saturation to a desired level. A measurable range of electric current is widened by suppressing magnetic saturation in the magnetic core without increasing its size. | 2009-01-08 |
20090009281 | Fuse element and manufacturing method thereof - A fuse element comprises a substrate having a top surface, a bottom surface opposite to said top surface, and side surfaces, a heat insulation layer including a first surface and a second surface opposite to said first surface, said first surface of said heat insulation layer disposed on said top surface of said substrate, and said second surface having a surface roughness, a protective layer disposed above said heat insulation layer, and a fuse layer disposed between said heat insulation layer and said protective layer. | 2009-01-08 |
20090009282 | NETWORK-BASED LIGHTING EQUIPMENT REMOTE MONITORING AND MANAGEMENT SYSTEM - A network-based lighting equipment remote monitoring and management system is proposed, which is designed for use with a network system to allow the user to carry out monitoring and management tasks on one or more remotely-located lighting equipment systems in a real-time manner via the network system. The proposed system is characterized by the provision of a user-operated network-based real-time monitoring and management function for remotely-located lighting equipment, the capability to provide efficient and cost-effective management in the utilization of lighting equipment for saving energy and cost, and the capability to provide real-time warning of abnormal operating conditions of the lighting equipment. | 2009-01-08 |
20090009283 | Anti-Theft Location Check Device - An anti-theft device for an electronics apparatus, including (a) locating means for determining an actual location, (b) storage means for storing a permissible location, and (c) processing means connected to the locating means and storage means. The processing means is configured to retrieve the actual location from the locating means, and to compare the actual location against the permissible location. The processing means is further configured to disable at least part of the functionality of the electronics apparatus if the actual location is more than a predetermined distance from the permissible location. The processing means is further configured to enter the anti-theft device in a standby mode, wherein the electronics apparatus is never disabled by the anti-theft device, and the standby mode may be entered for a predetermined time period. | 2009-01-08 |
20090009284 | Biometric information sharing system, biometric information presentation apparatus, and biometric information presentation method - A biometric information sharing system, includes a biometric information detection and transmission apparatus, and a biometric information presentation apparatus. The biometric information detection and transmission apparatus includes a detection unit for detecting biometric information of a subject, and a transmission unit for transmitting the biometric information detected by the detection unit. The biometric information presentation apparatus includes a communication unit for performing information communications, an actuation unit for presenting the biometric information in a predetermined mode, and a control unit for causing the communication unit to receive the biometric information and controlling the actuation unit in response to the biometric information received by the communication unit. | 2009-01-08 |
20090009285 | Authentication of Re-Presentable Items - A system for authenticating re-presentable items, such as currency notes and passports, comprises applying to each item a unique code, reading the code on presentation, and checking the code against a database, characterised in that at each check, the code is altered. | 2009-01-08 |
20090009286 | Picking assisting device - A picking assisting device of the present invention is a device for assisting an operator in picking the article indicated by picking information from a storage rack where storing various articles. A display response device is installed in each storage section of the storage rack, and each display response device includes a picking display lamp that lights up to indicate the storage section to be picked, a numerical value display for displaying the number of pieces of articles to be picked, and a completion switch operated by the operator for generating a signal indicative of the completion of picking. Further, a blocking arm is provided to a front surface of each storage section of the storage rack. The blocking arm of each storage section is operated by an arm driving mechanism to open the front surface of the storage section indicated by the picking information whereas to keep the front surfaces of the remaining storage sections blocked. | 2009-01-08 |
20090009287 | Electric appliance monitoring device - The present invention relates to a monitoring device ( | 2009-01-08 |
20090009288 | Radio Frequency Identification Tagging - A Radio Frequency Identification (RFID) tag has an electronic identification circuit coupled to an antenna, wherein the RFID tag is arranged to communicate with a RFID tag reader via the antenna, using RF energy. The tag comprises means sensitive to light (such as a photodiode, phototransistor, photocell or a solar cell) for controlling (in particular inhibiting) communication between the RFID tag reader and the RFm tag. The tag can for example be embedded in or on a high-value object such as a banknote. The existence of the banknote cannot be detected e.g. by criminals in the absence of light (e.g. while the banknote is located in a wallet), but the authenticity of the banknote can be verified in legitimate use. | 2009-01-08 |
20090009289 | Cattle identification system employing infra-red tag and associated tag reader - The invention relates to a method of identifying an animal within a group, the method of identification being characterized by the steps of: attaching an identification device—an electronic tag—to the animal, locating an activation device—a tag reader—at a location, and activating an indicator when the identification device within a range of the activation device. | 2009-01-08 |
20090009290 | RADIO FREQUENCY AUTO-IDENTIFICATION SYSTEM - A medical fluid delivery system includes a dialysis instrument; a disposable pumping cassette operable with a pumping actuator of the dialysis instrument, the disposable cassette including or connected fluidly to a plurality of first connectors; a plurality of second connectors configured to interface with the first connectors, each second connector associated with a radio frequency (“RFID”) tag; and electronics configured to read the RFID tags via a plurality of antennae and to identify that each of the second connectors is positioned properly with respect to a proper one of the first connectors. | 2009-01-08 |
20090009291 | METHOD FOR WIRELESS DATA TRANSMISSION BETWEEN A BASE STATION AND A PASSIVE TRANSPONDER, AS WELL AS A PASSIVE TRANSPONDER - A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by writing a configuration register in the transponder. | 2009-01-08 |
20090009292 | RFID INTERROGATOR - Embodiments of the invention relate to the field of RFID interrogators, particularly RFID interrogators that combine low loss with high rates of communication from the interrogator to a tag. We describe a transmitter comprising a resonant circuit and a driver coupled to drive said resonant circuit, wherein said resonant circuit includes a resonance regeneration system such that during amplitude modulation of a resonant signal in said resonant circuit when an amplitude of said resonant signal is reduced energy from said reduction is stored and when said amplitude is increased said stored energy is used to regenerate said resonance signal. | 2009-01-08 |
20090009293 | Rfid Tag, Interrogator and System with Improved Symbol Encoding and Decoding - An improved RFID Tag, Interrogator, and system wherein at least one tag modulates a radio frequency signal by modulated backscatter operations. | 2009-01-08 |
20090009294 | METHOD AND SYSTEM FOR THE IMPLEMENTATION OF IDENTIFICATION DATA DEVICES IN THEME PARKS - A method and system for providing enhanced interactivity and immersion in a theme park environment. The system uses a token having a tag that is able to communicate with a reader that is associated with a theme park device. The tag communicates to the reader identification data that correlates to the theme of the theme park and the theme park device. The theme park device will act or behave in response to the identification data. | 2009-01-08 |
20090009295 | Transceiver with far field and near field operation and methods for use therewith - A transceiver includes a far field transceiver section, when engaged, transceives first data with a remote device via far field signaling. A near field transceiver section, when engaged, transceives second data with the remote device via near field signaling. A communication control module selectively engages the far field transceiver section and the near-field transceiver section. | 2009-01-08 |
20090009296 | Rf Switched Rfid Multiplexer - A radiofrequency identification (RFID) multiplexer, which may be in a network, interprets an RF signal from an RFED reader as RFE) tag interrogation data. A single cable directs an RF signal from the RFID reader and RF control signals and/or RF power through the multiplexer. An RF sampler may be coupled to the cable; and an RF detector detects the RF signal from the cable via the RF sampler. A data decoder decodes and interprets the RF signal as the RFID tag interrogation data and forwards the RFID tag interrogation data to a control logic circuit as a MUX channel-change command. The logic circuit and decoder may be combined in a microcontroller, and an RF backscatter modulator coupled to the cable enables reverse communication with the RFID reader to determine whether another RFID multiplexer is coupled to the RFID multiplexer. | 2009-01-08 |
20090009297 | System for recording valve actuation information - The present invention provides a system for recording valve actuation information that enables to figure out the actual operation condition of each individual valve without checking plural valves individually, and the valves do not have to be wired, and the structure of the system is simple. | 2009-01-08 |
20090009298 | Field Device Management - A system for facility management is disclosed, comprising a plurality of system devices each provided with an identity tag uniquely identifying the system device; a system layout database comprising facility layout data including intentional positions of the system devices; a system device database comprising data and identity for each system device; and an operator tool enabled to communicate with the system layout database and system device database, the operator tool being provided with a tag reader enabled to read an identity from the tags of the system devices when being in the vicinity of the system devices, wherein the operator tool is arranged to access data from the system device database about the system device and include said identity in an item of the system layout database. An operator tool and methods for managing the facility management system is also disclosed. | 2009-01-08 |
20090009299 | Information Synchronizing System - An information synchronizing system includes a wireless communication terminal including a first information storage device having a first wireless communication range and a second information storage device having a second wireless communication range, the second wireless communication range being larger than the first wireless communication range; a read/write device that reads information from and writes information to the first information storage device; a wireless communication base station capable of performing wireless communication with the wireless communication terminal; and a synchronization controlling device that writes information stored in the first information storage device, the information being read using the read/write device, to the second information storage device via the wireless communication base station and the wireless communication terminal. | 2009-01-08 |
20090009300 | Method for Reference of an Event or Record - A process to reference statically and dynamically event and record information to a device in a clear and concise manner is provided. | 2009-01-08 |
20090009301 | Tactile feedback device - The present invention discloses a tactile feedback device for giving realistic touch sensation to the user by stimulating the skin of the user. The tactile feedback device of the present invention comprises a housing having one end positioned near the skin of the user in use, an actuator, touch pins and an elastic means. The actuator is mounted inside the housing to convert electromagnetic energy into kinetic energy. The touch pins are mounted inside the housing so as to pop in and out, and the front end thereof is popped out of one end of the housing to contact the skin, and is connected with the actuator so as to be operated by kinetic energy of the actuator. The elastic plates of the elastic means are mounted between one end of the housing and the actuator, and have the touch pins fixedly passing through so as to be interlocked with the touch pins, and when the touch pins pop in and out, they are elastically deformed to have elastic energy. According to the present invention, the touch pins stimulate the skin of the user by dint of an interlocking structure of the actuator that converts electromagnetic energy into kinetic energy and the elastic means, so it is possible to implement realistic touch sensation. | 2009-01-08 |
20090009302 | APPARATUS, METHOD AND PROGRAM FOR DETECTING ACT OF LOOKING ASIDE - More accurate detection of an act of looking aside is to be achieved. A direction-of-face detection unit detects the orientation of face of a driver, and a direction-of-sight line detection unit detects the sight line orientation of the driver, based on an image photographed by a photographing unit. A judging unit judges whether or not the driver is looking aside, based on the face orientation of the driver. When the judging unit judges that the driver is not looking aside, a judging unit judges whether or not the driver is looking aside based on the sight line orientation of the driver. The invention is applicable to an apparatus for detecting an act of looking aside by a driver. | 2009-01-08 |
20090009303 | COMMUNICATION SYSTEM FOR VEHICLE - A communication system for a vehicle includes a portable identification device including a portion for receiving an interrogation signal and a portion for transmitting an indication indicative signal responsive to the interrogation signal, multiple tire sensor devices each of which includes a portion for receiving an initiation signal and a portion for transmitting a condition indicative signal responsive to the initiation signal, multiple transmitting devices each of which emits the interrogation signal and the initiation signal for different conditions within a communication area, a receiving device for receiving the indication indicative signal and the condition indicative signal, and a central controller for unlocking a door lock device when the portable identification device is determined to be in an overlapped area based on a condition of the portable identification device, the overlapped area being defined between two adjacent communication areas and in which the door lock device is involved. | 2009-01-08 |
20090009304 | Testing Apparatus for Vehicles and Trailers - A portable testing apparatus for testing the electrical systems and pneumatic systems of vehicles and trailers is provided. The apparatus can be alternatively connected to a vehicle or to a trailer. When connected thereto, a power supply in the testing apparatus provides electrical power to energize and test the various electrical systems thereof and a compressed air supply, also located in the testing apparatus, provides compressed air to feed and test the various pneumatic systems thereof. The testing apparatus is also generally equipped with indicator lights to provide visual indication of the proper functioning of a particular electrical circuit. Similarly, the testing apparatus is also generally equipped with pressure gauges to indicate the amount of pressure in a given pneumatic system and to detect leaks if any. The testing apparatus may also comprise a ground testing circuit for verifying that the vehicle or the trailer is correctly grounded electrically. | 2009-01-08 |
20090009305 | Vehicle Derailing Prevention Device - A vehicle speed V is read (step S | 2009-01-08 |
20090009306 | OBSTACLE DETECTION APPARATUS - An obstacle detection apparatus for a vehicle is provided. The apparatus includes an ultrasonic sensor and a controller. The ultrasonic sensor detects a presence of an obstacle around the vehicle and a distance to the obstacle by transmitting an ultrasonic wave and receiving the ultrasonic wave reflected by the obstacle. The controller controls the ultrasonic sensor. The ultrasonic sensor includes an ultrasonic wave element. The ultrasonic wave element has multiple resonance modes. The ultrasonic sensor changes a directivity of the ultrasonic sensor by selecting one of the multiple resonance modes of the ultrasonic wave element in accordance with a command signal output from the controller. | 2009-01-08 |
20090009307 | On-Vehicle Communication Apparatus and Method - An on-vehicle communication apparatus provided with: endpoint radio communication devices each provided for each one or more on-vehicle units; gateway radio communication devices which are respectively arranged in function networks provided with the above-mentioned one or more on-vehicle units, and performs radio communications with the endpoint radio communication devices that are included in the function network; and power sources each provided for any one of the above-mentioned one or more on-vehicle units and the above-mentioned one or more function networks. | 2009-01-08 |
20090009308 | Display Device Mounted in Working Vehicle and Display Method For the Display Device - A display device is mounted in a working vehicle equipped with a camera that monitors areas around the working vehicle. The display device includes: a monitor screen; first display means for displaying information about the working vehicle; second display means for displaying an image captured by the camera; first switching means for switching displayed image information; malfunction detection means for detecting a malfunction occured in the working vehicle; warning display means for displaying warning information; operation detecting means for detecting whether the working vehicle is working; and second switching means for automatically switching the image information displayed to the image information input by the first display means, where each referenced display is on the monitor screen. Thus, even if a malfunction occurs in the working vehicle, an operator is made aware of the malfunction in the working vehicle without being hindered from undertaking work while checking the safety. | 2009-01-08 |