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公开(公告)号：US20170285154A1
公开(公告)日：2017-10-05
申请号：US15514353
申请日：2014-09-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Deliang Zhang
CPC classification number: G01S7/52004 , G01S7/497 , G01S7/52 , G01S15/08 , G01S17/08 , H04M1/72569 , H04M2250/12 , H04M2250/22
Abstract: A detection distance calibration method, apparatus, and device are provided. At least one detection signal is collected (S101); a strength value of the at least one detection signal is determined (S102), where the strength value of the detection signal reflects a length of a detection distance; a reference strength value of the detection signal is determined according to the strength value of the at least one detection signal (S103); a calibration threshold is determined according to the reference strength value (S104), where the calibration threshold is used to determine a calibration range of the detection distance; and the detection distance is calibrated according to the calibration threshold and a strength value of a subsequently collected detection signal (S105). Accuracy of calibrating a detection distance can be improved.
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公开(公告)号：US12079403B2
公开(公告)日：2024-09-03
申请号：US17915038
申请日：2021-03-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wujian Liu , Guang He , Yang Xiang , Deliang Zhang
IPC: G06F3/038 , G06F3/0354 , G06F3/041
CPC classification number: G06F3/0383 , G06F3/03545 , G06F3/04162 , G06F3/04182 , G06F2203/0384
Abstract: This application provides a signal decoding method, a decoding circuit, and a stylus. In one example, a to-be-measured signal is sampled to obtain a plurality of sampled signals. The to-be-measured signal is a modulation signal that carries an interference signal. The modulation signal is sent by a touch panel of a terminal device. At least two edge signals in the to-be-measured signal are determined based on the plurality of sampled signals. The to-be-measured signal is decoded based on the at least two edge signals to obtain the modulation signal.
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