Patent application number | Description | Published |
20100127739 | SPREAD SPECTRUM CONTROL PLL CIRCUIT AND ITS START-UP METHOD - A calibration circuit ( | 05-27-2010 |
20100321069 | AC-COUPLED INTERFACE CIRCUIT - A differential driver ( | 12-23-2010 |
20110164693 | INTERFACE CIRCUIT - An interface circuit including an LSI ( | 07-07-2011 |
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 |
20120008713 | HYBRID DATA TRANSMISSION CIRCUIT - A data transmitter having a parallel-to-serial conversion function is supplied with a clock by a PLL circuit unit. In the PLL circuit unit, a first multiphase clock supplied to a first parallel-to-serial conversion circuit is generated and output by a multiphase VCO circuit, while a second multiphase clock supplied to a second parallel-to-serial conversion circuit is generated and output by a multiphase clock generator. The multiphase clock generator generates the second multiphase clock based on the clock output from the multiphase VCO circuit. | 01-12-2012 |
20120162189 | DRIVER CIRCUIT AND VIDEO SYSTEM - In a driver circuit in a transmission system, an output circuit outputs a differential signal based on input data signals. A current source control circuit controls a constant current source so that a common-mode potential of the differential signal becomes equal to a predetermined reference potential. An overshoot reduction circuit is connected to an input line of the common-mode potential of the current source control circuit, and reduces an overshoot of the common-mode potential based on the control signal. | 06-28-2012 |
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 |
20130342943 | INPUT PROTECTION CIRCUIT - In an input protection circuit, one end of a resistive element of a protection circuit is connected to an intermediate impedance point of a terminating device, which is connected between a pair of external terminals of a low amplitude differential interface circuit. The other end of the resistive element is connected to an anode terminal of a diode element. A cathode terminal of the diode element is connected to a reference potential terminal. As a result, even when one of external terminals of a low-breakdown voltage circuit is erroneously in contact with a signal terminal (i.e., a bus terminal which is always pulled up via a high resistance resistor) of the socket to be pulled up to a high voltage, the elements forming the circuit are greatly protected from deterioration and damages at low costs, while maintaining the quality of transmission signals. | 12-26-2013 |
20140043079 | INTERCHANNEL SKEW ADJUSTMENT CIRCUIT - An interchannel skew adjustment circuit adjusts signal skew between a first channel and a second channel. The circuit includes a phase adjustment circuit configured to receive a signal of the first channel, delay the signal by a discretely variable delay amount, and output a delayed signal; a channel coupling circuit configured to receive the signal output from the phase adjustment circuit and a signal of the second channel, and detect a phase difference between these two signals; and a controller configured to control the delay amount in the phase adjustment circuit based on a result detected by the channel coupling circuit. This interchannel skew adjustment circuit adjusts the interchannel signal skew only at a sender or a receiver, thereby reducing the circuit area and the power consumption. | 02-13-2014 |