Sony Corporation

Sony Semiconductor Solutions Corporation

Shingo Seto

Masakazu Yajima

Nobuharu Murashima

Hideo Niikura

Chisako Kajihara

Satoshi Suda

Tamotsu Kiyakawauchi

Masaaki Masuda

Hiromitsu Komatsu

Junya Matsui

[Object] To provide a signal transmission device and management system which are capable of transmitting a signal including information of an attachment target or information of the surrounding of an attachment target. [Solution] A management system includes: a signal transmission device which includes a housing that is attached to an object to be managed in a predetermined direction, a first optical power generation unit and a second optical power generation unit that have light receiving units on a first surface and a second surface facing outwardly in a predetermined direction, respectively, a first temperature sensor and a second temperature sensor that have thermal contacts on the first surface and the second surface, respectively, a communication control unit for transmitting a signal including temperature information detected by the first temperature sensor and the second temperature sensor using power generated by at least one of the first optical power generation unit and the second optical power generation unit; and an information processing device which has a control unit for receiving a signal transmitted from the signal transmission device and outputting the state information of an object to be managed to which the signal transmission device is attached on the basis of the temperature information detected by at least the first temperature sensor and the second temperature sensor.

Signal transmission device and management system

A phase-locked loop according to the present disclosure includes a reference-phase generation circuit that sequentially generates a reference phase value, and an oscillating circuit that generates a first clock on a basis of a difference between the reference phase value and a feedback phase value. The phase-locked loop further includes a signal generation circuit that generates, on a basis of the first clock, a plurality of second clocks varying in phase, and generates a third clock by switching the plurality of second clocks a plurality of times in each of cycle periods each corresponding to one cycle of the reference clock. The phase-locked loop further includes a phase detection circuit that determines a phase value of the third clock and outputs the determined phase value as the feedback phase value.

Phase-locked loop and frequency synthesizer

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Kanagawa, Japan

Shingo Seto