Sony Corporation

Sony Semiconductor Solutions Corporation

Tomokazu Tanaka

Hidekazu Kikuchi

Akira Muto

Hideo Morohashi

Kunio Gosho

[Problem to be Solved] To provide a serial data transmission device that makes it possible to dynamically switch a band or a data transmission path and enhance the stability to failure while multiplexing and transmitting data by a TDM method when serial data is transmitted between a plurality of daisy-chained data transmission devices. [Solution] There is provided a serial data transmission device including: a receiver that receives data serially transmitted by a time-division multiplex method from another device daisy-chained to the serial data transmission device; a transmitter that serially transmits data by the time-division multiplex method to another device daisy-chained to the serial data transmission device; and a controller that controls serial transmission by the receiver and the transmitter, in which the controller performs control to make the serial transmission by the transmitter adjustable.

Serial data transmission device and clock recovery device

A data reception device that can improve communication quality when transmitting/receiving serial data is to be provided. There is provided the data reception device including a signal generation unit that generates, from serial data received, a first signal whose value is inverted at a rising timing of the serial data and a second signal whose value is inverted at a falling timing of the serial data, and a clock recovery unit that performs clock recovery using the first signal and the second signal generated by the signal generation unit.

Data reception device and data transmission/reception device

Disclosed herein is a CDR circuit including delay elements, including: a divider having a delay element and configured to extract a clock by using, as a trigger, a data input with a signal transition regularly inserted; and a latch configured to latch an input data signal in synchronization with the clock extracted by the divider.

CDR circuit, reception apparatus, and communication system

Disclosed herein is a driver amplifier circuit, including: a first current source transistor of a first conductivity type, and a second current source transistor of the first conductivity type, control voltages being supplied to gates of the first current source transistor and the second current source transistor, respectively; a first switching transistor of the first conductivity type, and a second switching transistor of the first conductivity type; a third switching transistor of a second conductivity type, and a fourth switching transistor of the second conductivity type; first, second, third, and fourth resistor elements; and a first output node and a second output node.

Driver amplifier circuit and communication system

Disclosed herein is a clock data recovery circuit including: a first phase detector; a loop filter; a charge pump; a voltage-controlled oscillator; a second phase detector; a phase correction information generation section; and a phase correction information addition section.

Clock data recovery circuit and multiplied-frequency clock generation circuit

A method of manufacturing a flexible printed circuit board having an insulation layer, a first signal wiring layer including a microstrip line, a second signal wiring layer including a signal connection terminal for allowing the microstrip line to connect the exterior connector electrically, and a ground conductive section having a ground connection terminal for connecting the exterior connector. The microstrip line and the signal connection terminal are connected to each other by a wiring via hole. The wiring via hole passes through the insulation layer, the first signal wiring layer, and the second signal wiring layer. The microstrip line has a taper section which gradually enlarges a width of the microstrip line toward the wiring via hole in the vicinity of the wiring via hole. The ground conductive section that corresponds to the microstrip line has a taper section with a shape matching the taper section of the microstrip line.

Method of manufacturing a flexible printed circuit board, an optical transmitter receiver module, and an optical transmitter receiver

A flexible printed circuit board has an insulation layer, a first signal wiring layer including a microstrip line, a second signal wiring layer including a signal connection terminal for allowing the microstrip line to connect the exterior connector electrically, and a ground conductive section having a ground connection terminal for connecting the exterior connector. The microstrip line and the signal connection terminal are connected to each other by a wiring via hole. The wiring via hole passes through the insulation layer, the first signal wiring layer, and the second signal wiring layer. The microstrip line has a taper section which gradually enlarges a width of the microstrip line toward the wiring via hole in the vicinity of the wiring via hole. The ground conductive section that corresponds to the microstrip line has a taper section with a shape matching the taper section of the microstrip line.

Growing community of inventors

Kanagawa, Japan

Tomokazu Tanaka