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公开(公告)号：US09870113B2
公开(公告)日：2018-01-16
申请号：US15679771
申请日：2017-08-17
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0418
Abstract: A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
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公开(公告)号：US20180011595A1
公开(公告)日：2018-01-11
申请号：US15201714
申请日：2016-07-05
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Tae-gil Kang , Jerry Kim , Kai Lim
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04104
Abstract: A system and method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. The system and method determines a distinction between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.
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公开(公告)号：US20170371442A1
公开(公告)日：2017-12-28
申请号：US15191714
申请日：2016-06-24
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kusuma Adi Ningrat , Giuseppe Noviello , John Serge Georges Nankoo
IPC: G06F3/044
CPC classification number: G06F3/044 , G06F2203/04102
Abstract: An electronic device includes a flexible substrate. The flexible substrate includes a first portion having a plurality of first conductive lines formed thereon, a second portion having a plurality of second conductive lines formed thereon, and an intermediate portion mechanically coupling the first portion to the second portion. The intermediate portion is configured to permit folding so that the first and second portions can be arranged back-to-back or face-to-face such that plurality of the second conductive lines and plurality of first conductive lines are oriented so as to cross one another to thereby form a capacitive sensing panel. A single connector is mechanically coupled to the first portion or the second portion, and electrically coupled to the first portion and the second portion but not electrically coupling the first portion to the second portion.
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214.发明授权公开(公告)号：US09846520B2
公开(公告)日：2017-12-19
申请号：US15616294
申请日：2017-06-07
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Baranidharan Karuppusamy , Giuseppe Noviello , Chee Weng Cheong , Leonard Dinu , Dianbo Guo , Kien Beng Tan , Chaochao Zhang
IPC: G06F3/045 , G06F3/044 , G06F3/041 , G06F3/038 , G06F3/0354
CPC classification number: G06F3/044 , G06F3/03545 , G06F3/0383 , G06F3/0416
Abstract: An active stylus is capacitively coupled to a capacitive touch panel for communication. The active stylus operates in a wait mode to receive initial communications from the panel. In response to such receipt, the active stylus synchronizes to a repeating communications frame implementing time division multiplexing. Communications from the active stylus to the panel include: information communications; synchronization communications and communications specific for columns and/or rows of the panel. Communications from the panel to the active stylus may be addressed uniquely to the stylus or commonly to a group of styluses.
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公开(公告)号：US20170346470A1
公开(公告)日：2017-11-30
申请号：US15167216
申请日：2016-05-27
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Beng-Heng Goh
CPC classification number: H03K5/15033 , H03K23/502 , H03L7/16 , H03L7/183 , H03L7/1974
Abstract: A circuit includes a counter circuit, a logic circuit, and a clock divider. The counter circuit includes a clock divider counter to be loaded with most significant bits of a divider value, and decremented at a same edge of each pulse of a clock signal. The logic circuit compares a value contained in the divider counter to a reference value and generates an end count signal as a function of the value contained in the divider counter matching the reference value, and transitions a toggle signal at a same edge of each pulse of the end count signal. The clock divider counter is reloaded with the most significant bits of the divider value as a function of the end count signal. The clock divider generates a divided version of the clock signal as a function of the toggle signal.
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Patent Agency Ranking
216.发明申请公开(公告)号：US20170308220A1
公开(公告)日：2017-10-26
申请号：US15151247
申请日：2016-05-10
Inventor： Tae-gil Kang , Hang Yin , Cam Chung La
CPC classification number: G06F3/0416 , G06F3/044 , G06F3/04883 , G06F2203/04104 , G06F2203/04108
Abstract: An electronic device described herein includes a touch screen for a touch sensitive display carried by a portable housing. The electronic device is configured to operate in a high. detection threshold mode to determine whether an object is in contact with the touch sensitive display, and operate in a low detection threshold mode to determine whether the object is adjacent to the touch sensitive display, based on lack of detection of the object being in contact with the touch sensitive display. The electronic device is further configured to determine whether the object is in contact with a peripheral edge of the portable housing by determining whether the object is adjacent opposite sides of the touch sensitive display, based on detection of the object being adjacent to the touch sensitive display.
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公开(公告)号：US09772726B2
公开(公告)日：2017-09-26
申请号：US14531631
申请日：2014-11-03
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0418
Abstract: A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
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218.发明授权公开(公告)号：US09703433B2
公开(公告)日：2017-07-11
申请号：US14461977
申请日：2014-08-18
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Baranidharan Karuppusamy , Giuseppe Noviello , Chee Weng Cheong , Leonard Dinu , Dianbo Guo , Kien Beng Tan , Chaochao Zhang
IPC: G06F3/045 , G06F3/044 , G06F3/0354 , G06F3/038 , G06F3/041
CPC classification number: G06F3/044 , G06F3/03545 , G06F3/0383 , G06F3/0416
Abstract: An active stylus is capacitively coupled to a capacitive touch panel for communication. The active stylus operates in a wait mode to receive initial communications from the panel. In response to such receipt, the active stylus synchronizes to a repeating communications frame implementing time division multiplexing. Communications from the active stylus to the panel include: information communications; synchronization communications and communications specific for columns and/or rows of the panel. Communications from the panel to the active stylus may be addressed uniquely to the stylus or commonly to a group of styluses.
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公开(公告)号：US09696861B2
公开(公告)日：2017-07-04
申请号：US14641717
申请日：2015-03-09
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Leonard Dinu , Eng Jye Ng , Kien Beng Tan
CPC classification number: G06F3/044 , G06F3/0416
Abstract: A touch panel includes capacitive sensing electrodes and a touch controller operates in a first operating mode to detect a touch location on the touch panel. In a second operating mode, the touch controller transmits a modulated data signal through the touch panel to an active stylus. Each electrode is driven by a line driver circuit. A control circuit selectively actuates first ones of the line driver circuits to pass the modulated data signal to corresponding first ones of the electrodes which do not pass through a region of the touch panel associated with the location of the detected touch. Simultaneously, the control circuit selectively actuates second ones of the line driver circuits, different from said first ones of the line driver circuits, to ground corresponding second ones of the electrodes which do pass through the region of the touch panel associated with the location of the detected touch.
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公开(公告)号：US09675368B2
公开(公告)日：2017-06-13
申请号：US14272455
申请日：2014-05-07
Applicant: STMicroelectronics Asia Pacific PTE LTD
Inventor： Dianbo Guo , Praveesh Chandran , Lokesh Kumar Korapati
CPC classification number: A61B17/22022 , A61B18/245 , A61B18/26 , A61B2017/22051 , A61B2017/22079 , A61H23/008 , G06F3/0416 , G06F3/044 , G06F2203/04108
Abstract: A touch panel includes a plurality of drive lines, a plurality of orthogonal sense lines, and a plurality of sensors. A method of controlling the touch panel to detect touches includes simultaneously applying a drive signal to each of a group of drive lines of the touch panel. Each of the drive signals is applied to a corresponding drive line in the group during a time slot and all the applied drive signals having the same electrical characteristics over the time slot. The method includes sensing sense signals generated on the sense lines in response to the applied drive signals and processing the sense signals to detect touches of the touch panel.
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