Patent application number | Description | Published |
20090106460 | REMOVABLE MEMORY DEVICE, PHASE SYNCHRONIZING METHOD, PHASE SYNCHRONIZING PROGRAM, MEDIUM RECORDING THE SAME, AND HOST TERMINAL - An object of the present invention is to provide a technique to improve the data transmission efficiency which allows correct reception of the data at the same time. A removable memory device that transmits/receives data to and from a host terminal, which includes: a clock reception section | 04-23-2009 |
20090108872 | INTERFACE CIRCUIT THAT CAN SWITCH BETWEEN SINGLE-ENDED TRANSMISSION AND DIFFERENTIAL TRANSMISSION - An object of the present invention is to realize reduction in an area of an output stage driver in an interface circuit that switches between two transmission systems. The interface circuit has two driver circuits and a drive control circuit that can switch between two driving systems that are a voltage driving system and a current driving system. The two driver circuits are connected to a power supply potential via the drive control circuit. Two input signals and inverted logic signals of the input signals are inputted via a selection circuit. According to a control signal inputted into the drive control circuit, the interface circuit switches between the voltage-driving type single-ended transmission system and current driving type differential transmission system. | 04-30-2009 |
20090233489 | HOST DEVICE - A card controller receives data from a recording card via a socket. A read clock is transmitted in a main transmission wiring, and the data is transmitted in a data transmission wiring. The read clock is withdrawn from the card controller by an outgoing transmission wiring and retrieved into the card controller by an incoming transmission wiring. A transmission delay amount of the outgoing transmission wiring is equal to that of the main transmission wiring, and a transmission delay amount of the incoming transmission wiring is equal to that of the data transmission wiring. The card controller receives the data in synchronization with the read clock retrieved by the incoming transmission wiring. | 09-17-2009 |
20090290274 | REMOVABLE MEMORY CARD - According to the present invention, the setting height position of a first terminal is set to be lower than the setting height position of a second terminal on the terminal formation surface of a printed substrate, so that the protection of an internal circuit and the transmission of a high-speed signal can be both achieved. | 11-26-2009 |
20090290582 | SIGNAL TRANSMISSION METHOD, TRANSMISSION/RECEPTION DEVICE, AND COMMUNICATION SYSTEM - It is an object of the invention to inhibit a drop in the data transmission efficiency due to the transmission of an interrupt signal. The invention provides a signal transmission method that is characterized in that a reception side and a transmission side partition data into a plurality of data fragments and send and receive the plurality of data fragments over at least two transmission lines, in that the transmission side transmits first data fragments of the plurality of data fragments over a first transmission line of the transmission lines, transmits data packets that include header information, a second data fragment that has the same bit length as the first data fragments, and footer information over a second transmission line other than the first transmission line, and transmits the first data fragments and the second data fragments in synchronization, and in that an interrupt signal for controlling the transmission side is transmitted from the reception side to the transmission side in a time slot that is an interval between first data fragments that are adjacent on the first transmission line. | 11-26-2009 |
20100289534 | INTERFACE CIRCUIT THAT CAN SWITCH BETWEEN SINGLE-ENDED TRANSMISSION AND DIFFERENTIAL TRANSMISSION - An object of the present invention is to realize reduction in an area of an output stage driver in an interface circuit that switches between two transmission systems. The interface circuit has two driver circuits and a drive control circuit that can switch between two driving systems that are a voltage driving system and a current driving system. The two driver circuits are connected to a power supply potential via the drive control circuit. Two input signals and inverted logic signals of the input signals are inputted via a selection circuit. According to a control signal inputted into the drive control circuit, the interface circuit switches between the voltage-driving type single-ended transmission system and current driving type differential transmission system. | 11-18-2010 |
20110103224 | DATA COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND COMMUNICATION METHOD - A data communication system for starting transmission and reception of target data for processing upon recognition that switching between communication modes is completed. The data communication system includes a master communication device and a slave communication device that continuously perform, at a time of switching from half-duplex communication to full-duplex communication, (i) a handshake using a directional control code indicating the switching and a preamble code indicating completion of the switching and (ii) a handshake using the preamble code and an acknowledge code indicating receipt of the preamble code, whereby each of the devices recognizes that the switching between communication modes by the opposite device is completed and starts transmission and reception of the target data. | 05-05-2011 |
20110182216 | INTERFACE DEVICE, COMMUNICATIONS SYSTEM, NON-VOLATILE STORAGE DEVICE, COMMUNICATION MODE SWITCHING METHOD AND INTEGRATED CIRCUIT - An interrupt request cannot be transmitted while a data read command or a data write command transmitted from a host device to a slave device is being processed in a half-duplex mode. Disclosed are a host device and a slave device that are set to a full-duplex mode by temporarily switching the communication direction of a first transmission channel or a second transmission channel after completing transmission and reception of a predetermined number of data packets in the half-duplex mode. The host device or the slave device can thus transmit an interrupt request, such as a request associated with a wait status or a busy status, to its communication target using the temporary full-duplex mode. This enables the host device or the slave device to process such an interrupt request during high-speed data transfer performed in the half-duplex mode. | 07-28-2011 |
20110241432 | INTERFACE CIRCUIT AND INTERFACE SYSTEM - To aim to provide an interface circuit that supports both a single-ended method and a differential method as a transmission method, and one of pairs of input terminals for a differential signal is shared to input/output a single-ended signal. | 10-06-2011 |
20110268198 | DRIVER CIRCUIT, RECEIVER CIRCUIT, AND METHOD OF CONTROLLING A COMMUNICATIONS SYSTEM INCLUDING THE CIRCUITS - In a communications system for differential signals, a driver circuit is connected to a receiver circuit by a pair of differential signal lines. When data is not being transmitted, the differential signal lines are maintained at a predetermined electric potential, and when data is to be transferred, a differential signal is output at predetermined electric potentials. The receiver circuit switches between a power-down state and a normal state when detecting states of the electric potentials of the differential signal lines. | 11-03-2011 |
20110280322 | DATA TRANSMISSION SYSTEM CAPABLE OF TRANSMITTING INTERRUPT SIGNAL WITHOUT INTERRUPT GATE PERIOD - A data transmission system comprises: a pair of transmission lines connecting a plurality of apparatuses; a bridge termination resistor connected between the transmission lines and having a resistance value matching a differential impedance of the transmission lines; a first switch connecting the bridge termination resistor to the transmission lines when being turned on, and disconnecting the bridge termination resistor from the transmission lines when being turned off; pull-up/down resistors connected between the transmission lines and a fixed voltage node, and having resistance values respectively matching characteristic impedances of the transmission lines, the fixed voltage node being a power supply or a ground; and second switches connecting the pull-up/down resistors between the transmission lines and the fixed voltage node when being turned on, and disconnecting the pull-up/down resistors from the transmission lines when being turned off. | 11-17-2011 |
20120021640 | COMMUNICATION CABLE - A serial-parallel conversion circuit provided on one end of a cable body converts a first serial signal into parallel signals and outputs the parallel signals to parallel signal lines. A parallel-serial conversion circuit provided on another end of the cable body converts the parallel signals inputted from the parallel signal lines into a second serial signal and outputs the second serial signal to outside. | 01-26-2012 |
20120112784 | DIFFERENTIAL SIGNAL TRANSMISSION LINE, IC PACKAGE, AND METHOD FOR TESTING SAID DIFFERENTIAL SIGNAL TRANSMISSION LINE AND IC PACKAGE - An IC package includes an integrated circuit for transmitting and receiving a pair of differential signals composed of a signal having positive polarity and a signal having negative polarity, a first signal terminal for transmitting the signal having positive polarity, a second signal terminal for transmitting the signal having negative polarity, and a third terminal arranged between the first signal terminal and the second signal terminal. The first and second terminals are electrically connected to the integrated circuit, and the third terminal is not electrically connected to the integrated circuit. | 05-10-2012 |
20130045635 | HIGH-SPEED INTERFACE CONNECTOR - A high-speed interface connector is used for connecting a cable or a memory card each having a differential transmission system signal pin arrangement including a pair of differential transmission signaling pins that are adjacent to each other and two stable potential pins provided on both sides of the pair of differential transmission signaling pins, the two stable potential pins having potentials different from each other. The connector includes: a first and a second contact terminals for differential transmission respectively connected to the pair of differential transmission signaling pins; and a third and a fourth contact terminals provided on both sides of the first and the second contact terminal, the third contact terminal adjacent to the first contact terminal being connected to one of the two stable potential pins, and the fourth contact terminal adjacent to the second contact terminal having a potential identical to that of the third contact terminal. | 02-21-2013 |
20130114657 | SIGNAL TRANSMISSION DEVICE - A signal transmission device including: a differential signal transmission unit having two output terminals for outputting a differential signal to a paired signal lines including first and second signal lines; a single-ended signal transmission unit having two output terminals for outputting independent two-channel single-ended signals to the paired signal lines; and a filter unit having first and second common mode filters. One terminal of the differential signal transmission unit and one terminal of the single-ended signal transmission unit are connected to the first signal line via one inductor of the first common mode filter of the filter unit. The other one terminal of the differential signal transmission unit and the other one terminal of the single-ended signal transmission unit are connected to the second signal line via one inductor of the second common mode filter of the filter unit. | 05-09-2013 |
20130251017 | PROXIMITY CONTACTLESS COMMUNICATION APPARATUS CAPABLE OF SELECTING APPROPRIATE ENCODING METHOD ACCORDING TO BANDWIDTH BETWEEN ANTENNAS - A comparator circuit compares a test pattern generated by a test pattern generator circuit, with a test pattern transmitted to a memory card and returned from the memory card. A control circuit determines a bandwidth corresponding to frequency components correctly transmitted between a host apparatus and the memory card, based on the returned test pattern, and selects an encoding method requiring a maximum available bandwidth. The control circuit generates a notification message indicating the selected encoding method, and encodes the notification message using the selected encoding method, and transmit the encoded notification message to the memory card. The control circuit establishes communication between the host apparatus and the memory card, when receiving a response message including an acknowledgement to the notification message, from the memory card. | 09-26-2013 |
20130336428 | DRIVER CIRCUIT, RECEIVER CIRCUIT, AND METHOD OF CONTROLLING A COMMUNICATIONS SYSTEM INCLUDING THE CIRCUITS - In a communications system for differential signals, a driver circuit is connected to a receiver circuit by a pair of differential signal lines. When data is not being transmitted, the differential signal lines are maintained at a predetermined electric potential, and when data is to be transferred, a differential signal is output at predetermined electric potentials. The receiver circuit switches between a power-down state and a normal state when detecting states of the electric potentials of the differential signal lines. | 12-19-2013 |
20140056368 | CONTACTLESS COMMUNICATION SYSTEM AND DIPOLE ANTENNA - Provided is a contactless communication system in which each device performing communication in the system includes a dipole antenna having a length which is less than half of wavelength of a clock frequency of digital baseband signals which are communicated. The dipole antennas are disposed in opposing positions to one another. The contactless communication system performs short distance contactless communication of the digital baseband signals using a frequency band which does not include a resonant frequency of the dipole antennas. | 02-27-2014 |
20150162654 | SIGNAL TRANSMISSION DEVICE, SIGNAL TRANSMISSION SYSTEM, SIGNAL TRANSMISSION METHOD, AND COMPUTER DEVICE - A signal transmission device includes a differential driver, a first single-ended driver circuit block, a second single-ended driver circuit block, a control circuit, and a common-mode filter. In the case where two-channel single-ended transmission is performed by using the first and second single-ended driver circuit blocks, the control circuit controls a driving capability of the first single-ended driver circuit block and a driving capability of the second single-ended driver circuit block in accordance with a combination of a change in a logical value of an output signal of the first single-ended driver circuit block and a change in a logical value of an output signal of the second single-ended driver circuit block. | 06-11-2015 |
Patent application number | Description | Published |
20090034829 | METHOD FOR INSPECTING A FOREIGN MATTER ON MIRROR-FINISHED SUBSTRATE - Provided is a foreign matter inspection method for positively detecting a foreign matter in the neighborhood of the edge of a mirror-finished substrate without fail. Edge-emphasis and binarization are performed following the taking of an image of a substrate-under-inspection at a contour of its inspection area, to further detect a plurality of sampling points representative of a contour of the inspection area. An estimated inspection area is determined by determining the size, position and rotation angle of contour lines defined, size-reducibly, from the coordinates of the plurality of sampling points. After applying a mask to the binary image data in an area other than the estimated inspection area, a foreign-matter detection step is performed. | 02-05-2009 |
20090067830 | COMPOUND EYE-CAMERA MODULE - A lens module ( | 03-12-2009 |
20100127157 | COMPOUND EYE CAMERA MODULE - A compound eye camera module according to the present invention includes a lens array including at least two lenses; an imaging element having two imaging areas corresponding to the two lenses; a light shielding block having a light shielding wall for separating optical paths of light transmitted through the two lenses; an optical filter for transmitting light of a specific wavelength range among the light transmitted through the two lenses; and a substrate having an opening larger than the optical filter. The imaging areas and the optical filter are located at a position corresponding to the opening. The imaging element is fixed to a face of the substrate opposite to the side of the lens array. The imaging element is in contact with a face of the optical filter which faces the imaging element. The light shielding block is fixed to a face of the optical filter which faces the light shielding block. The optical filter has portions protruding outside both of ends of the imaging element in a direction connecting the two optical axes of the two lenses. The light shielding block is fixed to the protruding portions of the optical filter. | 05-27-2010 |
20100225755 | COMPOUND EYE CAMERA MODULE AND METHOD OF PRODUCING THE SAME - An optical filter array ( | 09-09-2010 |
20110026119 | METHOD FOR PRODUCING DIFFRACTIVE OPTICAL ELEMENT, AND DIFFRACTIVE OPTICAL ELEMENT - According to a method for producing a diffraction optical element of the present invention, the center of a molding face | 02-03-2011 |
20120068368 | METHOD FOR MANUFACTURING OPTICAL DIFFRACTION ELEMENT - If an optical lens base having a diffraction grating on the surface is made of a resin, a corrosion reaction is produced between the optical lens base and a nanocomposite film material, thus deteriorating performance as a diffractive optical element. In the manufacturing process of a diffractive optical element according to the present invention, the nanocomposite film material is dripped onto a die and then heated and dried, thereby vaporizing away a solvent from the nanocomposite film material. After that, the dies are assembled to form a nanocomposite film with a predetermined thickness on the optical lens base. As a result, a diffractive optical element with excellent optical properties can be obtained without producing a reaction between the optical lens base and the nanocomposite film material. | 03-22-2012 |
20130088781 | DIFFRACTION OPTICAL ELEMENT AND PRODUCTION METHOD THEREFOR - In a diffraction optical element having a structure in which a base and an optical adjustment layer adhere to each other, defects such as cracks and peeling occur in the optical adjustment layer, when the adhesive strength between the base and the optical adjustment layer is degraded. In a diffraction optical element | 04-11-2013 |
20130170041 | DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR PRODUCING DIFFRACTIVE OPTICAL ELEMENT - A diffractive optical element disclosed in the present application includes a body | 07-04-2013 |
20140043687 | DIFFRACTION OPTICAL ELEMENT - A diffractive optical element includes: a body being composed of a first optical material and having a diffraction grating on the surface thereof; and an optical adjustment layer being composed of a second optical material and provided on the body so as to cover the diffraction grating. An envelope passing through the edge of the diffraction grating presents a curved surface, and the optical adjustment layer has a uniform thickness along the normal direction from the envelope. | 02-13-2014 |
20140139923 | DIFFRACTION OPTICAL ELEMENT AND MANUFACTURING METHOD THEREFOR - A diffractive optical element disclosed in the present application includes: a base which is made of a first optical material containing a first resin and which has a diffraction grating in its surface; and an optical adjustment layer which is made of a second optical material containing a second resin and inorganic particles and which is provided on the base so as to cover the diffraction grating, wherein ΔSP which is defined by a formula shown below is not less than −0.7 and not more than +0.7 [cal/cm | 05-22-2014 |