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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：US09791986B2
公开(公告)日：2017-10-17
申请号：US14804591
申请日：2015-07-21
发明人： Hyunkyu Ouh , Bumsoo Kim , Junchul Park , Jinchul Lee , Yoonkyung Choi
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0418
摘要： A touch display device configured to drive a signal line in a first plurality of steps during a line-sensing period and adjust an offset capacitance in a second plurality of steps corresponding to the first plurality of steps.
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3.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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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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