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公开(公告)号：US10523410B2
公开(公告)日：2019-12-31
申请号：US16283698
申请日：2019-02-22
Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Inventor： Guangyao Wang
IPC: H04L7/00 , H04L27/06 , H04L27/156 , H04L27/22
Abstract: A signal demodulation apparatus and method for a closed communication system are provided. An analog voltage comparator is configured to convert a modulated signal and output the digital signal. The modulated signal is a 2ASK, 2FSK or 2PSK modulated signal. A sampling decider is configured to sample the digital signal to obtain a sampled digital signal. The sampling decider includes a high-frequency clock sampling circuit and a feature extracting and deciding circuit. The high-frequency clock sampling circuit is configured to sample the digital signal and to sample at least two points for a high level of any pulse of the digital signal. The feature extracting and deciding circuit is configured to extract a feature of the sampled digital signal to obtain an extracted feature of the sampled digital signal, and compare the extracted feature with features of known digital modulated signals to acquire a value represented by the digital signal.
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2.发明授权公开(公告)号：US10359460B2
公开(公告)日：2019-07-23
申请号：US15700141
申请日：2017-09-10
Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Inventor： Guangyao Wang
Abstract: Disclosed are an ESD detection apparatus and method applied to digital integrated circuit, and an integrated circuit. The apparatus includes: a check read control module, configured to initiate a read operation for a flip-flop set module; and a check calculation module, configured to receive a data value sent by the flip-flop set module according to the read operation, perform check calculation according to the data value, and determine, according to comparison of a result of the check calculation and a history check calculation result, whether an ESD overrun is present. According to the present application, a simple circuit structure is employed to detect the ESC overrun, without occupying resources of an external main controller. As such, other operations may not be affected, the efficiency is improved, and the ESD overrun may be detected in real time.
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公开(公告)号：US10291388B2
公开(公告)日：2019-05-14
申请号：US15663807
申请日：2017-07-30
Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Inventor： Guangyao Wang
IPC: H04L7/00 , H04L27/06 , H04L27/22 , H04L27/156
Abstract: The present application provides a signal demodulation apparatus and method in a closed communication system. The signal demodulation apparatus includes: an analog voltage comparator, configured to convert a received modulated signal into a digital signal, and output the digital signal; and a sampling decider, configured to sample the received digital signal, and acquire a value represented by the digital signal according to a feature of a sampled digital signal to complete a signal demodulation. The present application improves signal-to-noise ratio of pressure detection, reduces power consumption and increases refresh rate. The apparatus and method according to the present application have the advantages of simple structure, easy to implement, small circuit area and low power consumption, and thus are suitable for a scenario imposing strict requirements on the power consumption and area, for example, a wearable device and the like.
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公开(公告)号：US10013018B2
公开(公告)日：2018-07-03
申请号：US15230484
申请日：2016-08-08
Applicant: Shenzhen Goodix Technology Co., Ltd.
Inventor： Guangyao Wang
CPC classification number: G06F1/0321 , G06F1/022 , G06F1/03 , G06F1/0328 , G06F1/035 , H03K3/012
Abstract: A sine wave generating apparatus comprises: a phase accumulating module, configured to acquire configuration information of a sine wave, and generate address information comprising integer address information and decimal address information; a value searching module, configured to search for first data information and second data information of the sine wave according to the integer address information; an interpolation module, configured to conduct interpolation between the first data information and the second data information, and acquire interpolation original data information of the sine wave according to the decimal address information; a random truncating module, configured to conduct truncation processing on the interpolation original data according to the bit width of the decimal address information and a pseudorandom sequence output value to acquire final interpolation data information of the sine wave; and a sine wave generating module, configured to generate image information of the sine wave according to the final interpolation data information of the sine wave.
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