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公开(公告)号：US09898149B2
公开(公告)日：2018-02-20
申请号：US14741940
申请日：2015-06-17
发明人： Sanghyub Kang , San-ho Byun , Jinchul Lee , Chadong Kim , Bumsoo Kim , Junchul Park , Hojin Park , Hyunkyu Ouh , Kyunghoon Lee , Michael Choi , YoonKyung Choi
IPC分类号： G06F3/044 , G06F3/041 , G06F1/16 , G06F3/01 , G06F3/0354
CPC分类号： G06F3/044 , G06F1/163 , G06F3/011 , G06F3/03547 , G06F3/0418 , G06F2203/0339 , G06F2203/04108
摘要： A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.
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2.发明授权公开(公告)号：US09973199B2
公开(公告)日：2018-05-15
申请号：US15199010
申请日：2016-06-30
发明人： San-Ho Byun , Chadong Kim , Jinchul Lee , Bumsoo Kim , Junchul Park , Kyeonggon Lee
摘要： A touch processor circuit includes a capacitance-to-voltage converter and an analog-to-digital converter. The capacitance-to-voltage converter converts an input signal transmitted from a touch sensor into a conversion signal corresponding to a capacitance of the touch sensor. The analog-to-digital converter digitizes the conversion signal transmitted from the capacitance-to-voltage converter and generates a digital value. The analog-to-digital converter includes a first converter, a second converter, and a combination logic circuit. The first converter calculates upper bits of the digital value based on the conversion signal during a first time period. The second converter calculates lower bits of the digital value based on a residue component signal transmitted from the first converter during a second time period. The combination logic circuit combines the upper bits and the lower bits and generates the digital value.
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公开(公告)号：US10705654B2
公开(公告)日：2020-07-07
申请号：US15675398
申请日：2017-08-11
发明人： Bumsoo Kim , Chadong Kim , Junchul Park , Kyeonggon Lee , YoonKyung Choi
摘要： An operating method of a touch driving integrated circuit (TDI) sensing a user touch on a touch panel includes: transmitting a first touch signal through a transmission line connected with the touch panel; receiving a first sensing signal through a reception line connected to the touch panel; receiving a first display noise through a detection line connected to the touch panel; and offsetting a noise included in the first sensing signal by using the first display noise.
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公开(公告)号：US20160124544A1
公开(公告)日：2016-05-05
申请号：US14741940
申请日：2015-06-17
发明人： Sanghyub Kang , San-ho Byun , Jinchul Lee , Chadong Kim , Bumsoo Kim , Junchul Park , Hojin Park , Hyunkyu Ouh , Kyunghoon Lee , Michael Choi , Yoonkyung Choi
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F1/163 , G06F3/011 , G06F3/03547 , G06F3/0418 , G06F2203/0339 , G06F2203/04108
摘要： A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.
摘要翻译： 用于触敏屏幕的触摸模拟前端（AFE）可以包括被配置为对触摸面板和被配置为感测触摸面板的接收器充电的发射器。 接收器可以包括被配置为将从触摸面板接收的电容的变化转换为电压信号的电荷 - 电压（C2V）转换器，被配置为将电压信号转换为差分信号的相关双采样（CDS）块，以及 对差分信号的正和负信号进行采样，以及积分器，被配置为累积采样的正和负信号之间的差。
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公开(公告)号：US11650702B2
公开(公告)日：2023-05-16
申请号：US17507395
申请日：2021-10-21
发明人： Chadong Kim , Bumsoo Kim , Jongmin Baek , Gyeonggon Lee , Jinchul Lee , Choonghoon Lee , Yunrae Jo , Yoonkyung Choi
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F2203/04112
摘要： A sensing device includes a touch panel including first and second sensor electrodes, and a touch panel controller acquiring a sensing signal from the touch panel and detecting a user input based on the sensing signal. The touch panel controller acquires the sensing signal from at least one of the first sensor electrodes and the second sensor electrodes in a first mode operating at a first power. The touch panel controller selects a first transmitting electrode, a second transmitting electrode, and receiving electrodes from one of the first sensor electrodes and the second sensor electrodes, inputs a first driving signal to the first transmitting electrode, and inputs a second driving signal having a phase difference of 180 degrees with respect to the first driving signal to the second transmitting electrode in a second mode operating at a second power and a third mode in which a sensing operation is performed.
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公开(公告)号：US11157116B2
公开(公告)日：2021-10-26
申请号：US16813943
申请日：2020-03-10
发明人： Chadong Kim , Bumsoo Kim , Jongmin Baek , Gyeonggon Lee , Jinchul Lee , Choonghoon Lee , Yunrae Jo , Yoonkyung Choi
IPC分类号： G06F3/044
摘要： A sensing device includes a touch panel including first and second sensor electrodes, and a touch panel controller acquiring a sensing signal from the touch panel and detecting a user input based on the sensing signal. The touch panel controller acquires the sensing signal from at least one of the first sensor electrodes and the second sensor electrodes in a first mode operating at a first power. The touch panel controller selects a first transmitting electrode, a second transmitting electrode, and receiving electrodes from one of the first sensor electrodes and the second sensor electrodes, inputs a first driving signal to the first transmitting electrode, and inputs a second driving signal having a phase difference of 180 degrees with respect to the first driving signal to the second transmitting electrode in a second mode operating at a second power and a third mode in which a sensing operation is performed.
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7.发明授权公开(公告)号：US09710118B2
公开(公告)日：2017-07-18
申请号：US14750079
申请日：2015-06-25
发明人： Junchul Park , Bumsoo Kim , Hyunkyu Ouh , Sang-Hyub Kang , Chadong Kim , Sanho Byun , Jinchul Lee , Yoon-Kyung Choi
CPC分类号： G06F3/044 , G06F3/0416 , G06F3/0418
摘要： Provided are a semiconductor device and a semiconductor system, which can increase immunity against noises through tertiary correlated double sampling (CDS). The semiconductor device includes an amplifier that receives noise and a driving signal, resets for each predetermined period of the driving signal and samples the noise to generate first sampled noise. The first sampled noise includes multiple noise differences each occurring between consecutive reset points. A sampler performs second sampling and third sampling on the first sampled noise and performs fourth sampling on the second and third sampled noises. The first sampled noise includes first to third noise differences, the second sampled noise is a difference between the first and second noise differences, the third sampled noise is a difference between the second and third noise differences, and the fourth sampled noise is a difference between the second and third sampled noises.
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