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公开(公告)号：US20230216496A1
公开(公告)日：2023-07-06
申请号：US18090283
申请日：2022-12-28
Applicant: ABOV Semiconductor Co., Ltd.
Inventor： Young Jin SEO , Seo Han LEE , Yoon Ki KIM , Yeong Jin MUN
CPC classification number: H03K17/9545 , G01D3/0365
Abstract: A proximity sensor is provided with multiple channels and a proximity sensor chip (IC) connected to the multiple channels through a sensing line. The proximity sensor chip (IC) includes an internal temperature sensor, senses a first sensing value through the multiple channels, senses a second sensing value through the internal temperature sensor, and compensates the first sensing value through addition or subtraction of the second sensing value with respect to the first sensing value. The internal temperature sensor includes: a clock signal generator including a first oscillator and generating first clock signals variable according to temperature characteristics; and a temperature compensator generating second clock signals according to a setting condition corresponding to the first clock signals generated from the clock signal generator and outputting the second sensing value by counting the second clock signals through a second oscillator generating reference clock signals independent of temperature change.
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公开(公告)号：US20200142533A1
公开(公告)日：2020-05-07
申请号：US16671942
申请日：2019-11-01
Applicant: ABOV SEMICONDUCTOR CO., LTD.
Inventor： Young Jin SEO , Byoung Su JEONG , Seok Hyun JEE , Yun Yeong JANG
Abstract: Disclosed are a proximity sensor and a proximity detection method for the proximity sensor. The proximity sensor includes: a reception circuit configured to receive a first electrical signal which is generated based on proximity of the conductor; a first signal processing circuit configured to determine whether or not the conductor is in close proximity to the electronic device by using the first electrical signal, a first baseline value, and a threshold value; a temperature detection circuit configured to detect the temperature of the proximity sensor independently of the first electrical signal; and a second signal processing circuit configured to, when the conductor is in close proximity to the electronic device and also a temperature variation equal to or larger than a reference value is detected by the temperature detection circuit, generate a second baseline value by adding a temporary compensation value to the first baseline value.
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公开(公告)号：US20220034683A1
公开(公告)日：2022-02-03
申请号：US17015341
申请日：2020-09-09
Applicant: ABOV Semiconductor Co., Ltd.
Inventor： Young Jin SEO , Seo Han LEE , Jeong Hwan SEO
Abstract: A proximity sensor having improved environmental compensation performance and an environmental compensation method in the proximity sensor are disclosed. The environmental compensation method and the proximity sensor advantageously reduce processing time, algorithm operation time, and power consumption by previously setting sensing values before sensing of sensors unlike a typical method in which compensation is carried out by multiplying factors obtained through software. Further, the environmental compensation method and the proximity sensor have an advantage of accurate compensation not only for linearly varying environmental factors but also non-linearly varying environmental factors.
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公开(公告)号：US20200371144A1
公开(公告)日：2020-11-26
申请号：US16840833
申请日：2020-04-06
Applicant: ABOV SEMICONDUCTOR CO., LTD.
Inventor： Young Jin SEO , Young Gun Heo
Abstract: Disclosed herein are an apparatus and method for automatically calibrating capacitance per channel, for measuring parasite capacitance values of respective channels due to a difference in a length of a wiring of each capacitance sensing channel when a circuit is designed and adding a unique calibration capacitance value of each channel such that all channels have the same reference capacitance value that is preset, and in detail, the apparatus for automatically calibrating a capacitance per channel includes a touch sensing device including a plurality of touch sensing regions, and a capacitance measurement and calibration device configured to measure parasite capacitances of channels connected to the plurality of touch sensing regions, respectively, and to add a unique calibration capacitance of each channel to a corresponding channel to acquire a preset reference capacitance when each channel is connected to the parasite capacitance.
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