Time synchronization device, electronic apparatus, time synchronization system and time synchronization method

    公开(公告)号:US11429137B2

    公开(公告)日:2022-08-30

    申请号:US16620547

    申请日:2019-04-16

    发明人: Xiangye Wei

    IPC分类号: G06F1/12 H03K5/01 H04L7/033

    摘要: A time synchronization device adapted for an electronic apparatus, an electronic apparatus, a time synchronization system and a time synchronization method. The time synchronization device includes: a signal generating circuit and a time adjusting circuit. The signal generating circuit includes: a control circuit, configured to generate a frequency control word; and a signal adjusting circuit, configured to receive the frequency control word and an input signal having an initial frequency, and to generate and output an output signal having a target frequency based on the frequency control word and the input signal. The time adjusting circuit is configured to perform a synchronization adjusting operation on a clock signal of the electronic apparatus based on the output signal having the target frequency.

    Signal generation circuit and method, and digit-to-time conversion circuit and method

    公开(公告)号:US11342925B2

    公开(公告)日:2022-05-24

    申请号:US17296672

    申请日:2020-08-13

    摘要: A signal generating electric circuit, a signal generating method, a digit-to-time converting electric circuit and a digit-to-time converting method. The signal generating electric circuit includes: a first generating electric circuit configured for, based on a first frequency control word and a reference time unit, generating a periodic first output signal; and a second generating electric circuit configured for, based on a second frequency control word and the reference time unit, generating a periodic second output signal. The first frequency control word includes a first integer part and a first fractional part, the second frequency control word includes a second integer part and a second fractional part, the first integer part is equal to the second integer part, the first fractional part and the second fractional part are not equal, and a period of the first output signal and a period of the second output signal are not equal.

    Touch panel and pressure touch detection method thereof, and touch apparatus

    公开(公告)号:US11231821B2

    公开(公告)日:2022-01-25

    申请号:US16470736

    申请日:2018-11-14

    发明人: Xiangye Wei

    IPC分类号: G06F3/044 G06F3/041

    摘要: A touch panel, a touch apparatus and a pressure touch detection method thereof. The touch panel includes: a touch electrode layer; a conductive layer, disposed opposite to the touch substrate and configured to form capacitance with the touch electrode layer; a dielectric layer, located between the touch electrode layer and the conductive layer, the dielectric layer includes a fluid dielectric layer and a solid dielectric layer, and the fluid dielectric layer has a dielectric constant larger than a dielectric constant of the solid dielectric layer, and a fluid in the fluid dielectric layer is configured to flow under the touch pressure to change the dielectric constant of the dielectric layer, so that the capacitance between the touch electrode layer and the conductive layer at the touch position and in the peripheral region of the touch position changes.

    Digital clock signal generator, chip, and method for generating spread-spectrum synchronous clock signals

    公开(公告)号:US11848679B2

    公开(公告)日:2023-12-19

    申请号:US16975258

    申请日:2019-10-09

    摘要: The present application discloses a circuit for generating spread-spectrum synchronous clock signal. The circuit includes a frequency detector comprising a fraction controller configured to compare an input signal of a first frequency with a feedback signal of a second frequency in a loop of feedback to generate a first control signal and a second control signal alternately for determining a control word to track the first frequency and a phase-shift controller configured to register n levels for the first control signal and the second control signal to introduce n phase delays for changing a fraction part of the control word randomly to provide a broadened boundary. The circuit also includes a digitally controlled oscillator configured to generate a synthesized periodic signal based on a base time unit, the first frequency, and the control word, with the second frequency being locked within the broadened boundary of the first frequency.

    SIGNAL GENERATION CIRCUIT AND METHOD, AND DIGIT-TO-TIME CONVERSION CIRCUIT AND METHOD

    公开(公告)号:US20220029627A1

    公开(公告)日:2022-01-27

    申请号:US17296672

    申请日:2020-08-13

    摘要: A signal generating electric circuit, a signal generating method, a digit-to-time converting electric circuit and a digit-to-time converting method. The signal generating electric circuit includes: a first generating electric circuit configured for, based on a first frequency control word and a reference time unit, generating a periodic first output signal; and a second generating electric circuit configured for, based on a second frequency control word and the reference time unit, generating a periodic second output signal. The first frequency control word includes a first integer part and a first fractional part, the second frequency control word includes a second integer part and a second fractional part, the first integer part is equal to the second integer part, the first fractional part and the second fractional part are not equal, and a period of the first output signal and a period of the second output signal are not equal.