Patent application number | Description | Published |
20080284539 | HIGH FREQUENCY CIRCUIT, SEMICONDUCTOR DEVICE, AND HIGH FREQUENCY POWER AMPLIFICATION DEVICE - A small, high performance, multifunctional high frequency circuit that is multiband and multimode compatible reduces loss from a switch formed on the output side of a final stage amplification unit. The final stage amplification unit power amplifies an input signal and outputs an amplified signal. A first matching circuit impedance converts the amplified signal input thereto at a first input impedance, and outputs a first impedance-converted signal at a first output impedance. A control unit that generates a control signal denoting signal path selection information. A switch unit selects one of at least two signal paths based on the control signal, passes the first impedance-converted signal at an on impedance through the selected path, and outputs the pass signal. A second matching circuit impedance converts a pass signal input thereto at a second input impedance, and outputs a second impedance-converted signal at a second output. | 11-20-2008 |
20080297260 | RADIO-FREQUENCY POWER AMPLIFIER - A radio-frequency power amplifier for preventing a final-stage HBT from being destroyed is provided. To this end, a radio-frequency multistage power amplifier of the present invention includes: a first amplification stage having a first hetero bipolar transistor of which collector output is detected; a second amplification stage which is prior to the first amplification stage and which has a second hetero bipolar transistor in which the detection result is reflected; a first resistor provided between a collector of the second hetero bipolar transistor and a power supply; and a protection circuit which is connected between a collector of the first hetero bipolar transistor and the collector of the second hetero bipolar transistor, detects output from the collector of the first hetero bipolar transistor, and reduces a voltage of the collector of the second hetero bipolar transistor in accordance with the detected output. | 12-04-2008 |
20100026390 | DETECTOR CIRCUIT AND SYSTEM FOR A WIRELESS COMMUNICATION - Provided are a detector circuit which has a simple circuit configuration, is capable of indicating an accurate power according to a load fluctuation of a radio frequency power amplifier or a difference in a modulation mode, and can be easily incorporated in the radio frequency power amplifier, and a wireless communication system using the detector circuit. The detector circuit 10 includes a detecting resistor 11 for detecting a part of a current flowing from a bias circuit 6, and a current-voltage conversion circuit 12 for converting a current obtained through the detecting resistor 11 into a voltage. A current supplied from the bias circuit 6 to the amplifying transistor 1 is detected, so that an output current from the amplifying transistor 1 fluctuates when a load on the radio frequency power amplifier fluctuates, and an input current and a current from the bias circuit fluctuate in proportion to the output current from the amplifying transistor 1, whereby an outputted detection voltage can follow a load fluctuation on the radio frequency power amplifier. | 02-04-2010 |
20110241783 | DETECTOR CIRCUIT AND SYSTEM FOR A WIRELESS COMMUNICATION - Provided are a detector circuit which has a simple circuit configuration, is capable of indicating an accurate power according to a load fluctuation of a radio frequency power amplifier or a difference in a modulation mode, and can be easily incorporated in the radio frequency power amplifier, and a wireless communication system using the detector circuit. The detector circuit | 10-06-2011 |
20120112832 | RADIO FREQUENCY SWITCH AND RADIO FREQUENCY MODULE - The present invention provides a radio frequency switch and a radio frequency module having excellent distortion characteristics without causing a further insertion loss and a greater chip size. The radio frequency switch includes: input-output terminals which are for inputting and outputting a radio frequency signal; a basic switching unit provided between two of the input-output terminals; and a control terminal which receives a control voltage for controlling conduction and interruption of the basic switching unit. The basic switching unit includes field effect transistors (FETs) connected in multiple stages, each of the FETs being a meandered FET having a meandered gate electrode, and among the FETs, one of the FETs has a finger length shorter than finger lengths of rest of the FETs, the one of the FETs electrically located closest to one of the input-output terminals. | 05-10-2012 |
20130293311 | HIGH FREQUENCY POWER AMPLIFIER - Provided is a compact high frequency power amplifier having a high degree of freedom of design with respect to a gain fluctuation immediately after start-up of an amplifier. The high frequency power amplifier includes a speed-up circuit that transiently increases a reference voltage during rise of a control voltage to increase an amount of bias supplied to an amplification transistor from a bias circuit. The speed-up circuit includes a capacitor and an overshoot control circuit. The overshoot control circuit determines an increasing amount of the reference voltage when the reference voltage is transiently increased according to a charge amount charged in the capacitor, and the overshoot control circuit also determines a time constant in charging and discharging the capacitor. | 11-07-2013 |
Patent application number | Description | Published |
20090229958 | Push-button switch - The invention provides a push-button switch including: a star wheel ( | 09-17-2009 |
20110067209 | Slide Switch for Buckle Apparatus - A slide switch installed in a buckle apparatus includes a body | 03-24-2011 |
20130175145 | Slide Switch - A slide switch is provided that is more excellent in reliability than conventional techniques. A slide switch senses an extracted state and an inserted and engaged state of an object. The slide switch includes a body, a slider, a terminal, and an armature. The slider is slidably held in the body and is pushed by insertion of the object to slidingly move. The terminal is provided with a fixed contact point disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with a moving contact point that slides on a fixed contact point disposition surface of the body in association with sliding movement of the slider. In the entire range of the sliding movement, the body and the slider cover all around the fixed contact point and the armature. | 07-11-2013 |
20130175146 | Slide Switch - A slider is slidably held in a body and is pushed by insertion of an object to slidingly move. Terminals are provided with fixed contact points disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with moving contact points that slide on a fixed contact point disposition surface of the body in association with sliding movement of the slider. The slider has an armature mounting surface with a side wall protrudingly formed in one end in the sliding movement direction. The body has a facing surface facing an end surface of the side wall in an entire range of sliding movement. At least any one of an end in the sliding movement direction of the end surface of the side wall and an end in the sliding movement direction of the facing surfaces of the body has a foreign substance elimination groove formed therein. | 07-11-2013 |
20130175152 | Slide Switch - The slide switch includes a body, a slider, a terminal, and an armature. The slider is slidably held in the body and is pushed by insertion of the object to slidingly move. The terminal is provided with a fixed contact point disposed on a surface, facing the slider, of the body along a sliding movement direction. The armature is attached to the slider and is provided with a moving contact point that slides on a fixed contact point disposition surface of the body in association with sliding movement of the slider. The slider is provided with an engagement part to receive an action of a moving part that moves in the sliding movement direction in association with extraction and insertion of the object, and the engagement part is in shape of generating a free running distance in which the slider does not act even when the moving part acts. | 07-11-2013 |
20140262706 | ON/OFF DETECTING BUCKLE SWITCH - An ON/OFF detecting buckle switch includes: a case in a housing shape; a slider insertion port equipped in an upper face of the case; a support portion equipped in an inner side face of the case; a fixed terminal provided with a notched portion in one end in a strip shape and the other end fixed to the inner side face of the case; a movable terminal in a strip shape having one area fixed to the support portion; a slider provided with a terminal press portion that projects inside the case penetrating through the slider insertion port of the case and the notched portion of the fixed terminal, and when pressed down, presses down an end of the movable terminal; a spring that biases the slider upward; and bent portions in a hook shape in the notched portion of the fixed terminal and an end of the movable terminal. | 09-18-2014 |
Patent application number | Description | Published |
20100128971 | Image processing apparatus, image processing method and computer-readable recording medium - A pair of images subjected to image processing is divided. Next, based on mutually-corresponding divided images, mutually-corresponding matching images are respectively set. When a corresponding point of a characteristic point in one matching image is not extracted from the other matching image, adjoining divided images are joined together, and based on the joined divided image, a new matching image is set. | 05-27-2010 |
20100128972 | Stereo matching processing system, stereo matching processing method and recording medium - To correctly associate coinciding positions between a plurality of images. | 05-27-2010 |
20100128973 | Stereo image processing apparatus, stereo image processing method and computer-readable recording medium - A stereo image processing apparatus | 05-27-2010 |
20100128974 | Stereo matching processing apparatus, stereo matching processing method and computer-readable recording medium - To improve stereo matching speed and accuracy. An image data input unit | 05-27-2010 |
20140078146 | FLIGHT OBSTACLE EXTRACTION DEVICE, FLIGHT OBSTACLE EXTRACTION METHOD, AND RECORDING MEDIUM - Provided is a flight obstacle extraction device, a flight obstacle extraction method, and a recording medium which attain the detailed extraction of flight obstacles with fewer man-hours. An altitude information acquisition unit ( | 03-20-2014 |
Patent application number | Description | Published |
20080212041 | Information processing device and projection program - An information processing device including a projection unit which, when a predetermined signal is received while an image displayed on a display is being viewed, projects the image displayed on the display onto, for example, a wall as a substitute for a screen, which is not provided in the information processing device. As the projection unit, for example, a small-sized projector provided in the information processing device may be used. In response to a conventional problem where, when an incoming call is received while a moving image is being displayed, the user cannot view the moving image since the user has to put the mobile phone to an ear for having a conversation, the information processing device causes the projector to project the moving image so that the user can continue to view the image. | 09-04-2008 |
20090017792 | Mobile telephone having broadcast reception function - A mobile phone includes: a television broadcast receiving unit | 01-15-2009 |
20100315371 | Terminal Device With Display Function - A terminal device with a display function enables only an operation of a desired operation key valid, and easily perform the invalidation operation. In response to switching to a predetermined function mode by manipulating a jog dial, an image in the switched function mode is displayed in a display surface, based on an image signal from a display control section. A bar is located on a borderline between a contents area and an operation area in an initial state of displaying an image. When the jog dial is manipulated by the user to thereby move the bar from the borderline to a predetermined position within the operation area, a CPU determines that the position of the bar has been moved. Then, the CPU detects a new position of the bar, and makes an operation with respect to the operation key located between the bar and the borderline invalid. | 12-16-2010 |
20100333023 | DEVICE WITH E-MAIL FUNCTION - [Object] To provide a device with an e-mail function that allows screen transition actions to be smoothly performed in the e-mail function. | 12-30-2010 |
20130265143 | REMOTE CONTROL APPARATUS AND PORTABLE COMMUNICATION TERMINAL - A portable communication terminal having a remote control apparatus includes a CPU. The CPU detects electronic appliances around there by a wireless tag reader, displays a plurality of characters respectively corresponding to the detected plurality of appliances on the monitor, transmits test signals to these appliance, and changes a manner of the character of the appliance except for the appliance which responds, that is, the appliance which is in an off-state. Furthermore, the CPU detects identification information of a base station which is able to communicate with the terminal, registers the identification information detected under a desired location condition in the register, and determining whether or not a match condition is satisfied between detected identification information and the identification information which has been registered. Then, if the determination result is affirmative, the electronic appliance around there is detected by the wireless tag reader, and an operation screen for remotely controlling the detected appliance on a monitor is displayed. | 10-10-2013 |