公开(公告)号：US09977546B2

公开(公告)日：2018-05-22

申请号：US14319715

申请日：2014-06-30

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Kusuma Adi Ningrat ,  Manivannan Ponnarasu

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/041 ,  G06F3/0418 ,  G06F2203/04104 ,  G06F2203/04108

Abstract: Groove analysis in a device having a tactile input surface suited to detect more than one tactile input at a time. Using groove analysis allows a touch screen device a more robust and efficient algorithm for distinguishing between two different tactile inputs. The touch screen device may include a touch screen controller that includes an analysis circuit for determining grooves between touch inputs. Generally, when a touch input is received at the surface of a touch screen device, the touch screen may register touch strength signals at each of a plurality of touch regions. A groove may be generally defined as a touch region that exhibits a touch strength signal that is less than surrounding touch regions. Once all touch regions are analyzed by a groove analysis, various touch regions determined to grooves may be eliminated from a further analysis to determine the XY coordinates of actual touch inputs.

公开(公告)号：US20180050901A1

公开(公告)日：2018-02-22

申请号：US15240709

申请日：2016-08-18

Applicant: STMicroelectronics Asia Pacific Pte Ltd ,  STMicroelectronics S.r.l. ,  STMicroelectronics, Inc.

Inventor： Teck Khim Neo ,  Mauro Pasetti ,  Franco Consiglieri ,  Luca Molinari ,  Andrea Nicola Colecchia ,  Simon Dodd

IPC: B81B7/00 ,  B05B1/24

CPC classification number: B81B7/008 ,  B05B1/24 ,  B05B17/06 ,  B41J2/04501 ,  B41J2/04541 ,  B41J2/04543 ,  B41J2/14016 ,  B41J2/14072 ,  B81B2201/05 ,  B81B2207/012 ,  B81B2207/091

Abstract: The present disclosure is directed to a microfluidic die that includes ejection circuitry and one time programmable memory with a minimal number of contact pads to external devices. The die includes a relatively large number of nozzles and a relatively small number of contact pads. The die includes decoding circuitry that utilizes the small number of contact pads to control the drive and ejection of the nozzles and the reading/writing of the memory with the same contact pads.

公开(公告)号：US20180046320A1

公开(公告)日：2018-02-15

申请号：US15235974

申请日：2016-08-12

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Hugo Gicquel ,  Chee Weng Cheong

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04108

Abstract: A circuit described herein includes a charge to voltage converter circuit having an input coupled to receive a sense signal from a sense node associated with a mutual capacitance to be sensed, and an output. A reset switch is coupled between the output of the charge to voltage converter circuit and the input of the charge to voltage converter. An accumulator circuit is configured to accumulate voltages at the output of the charge to voltage converter circuit and to generate an accumulator output signal. Control circuitry is configured to generate control signals for the reset switch and accumulator circuit so as to reduce noise in the accumulator output signal.

公开(公告)号：US20180046309A1

公开(公告)日：2018-02-15

申请号：US15234243

申请日：2016-08-11

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Abhishek Singh ,  Hugo Gicquel

IPC: G06F3/041 ,  G06F3/044 ,  H02M3/07

CPC classification number: G06F3/0416 ,  G06F3/044 ,  H02M3/07

Abstract: An alternating current (AC) drive signal having a first frequency and a high logic level at a boosted supply voltage is applied to drive a capacitive sensing line of a capacitive touch panel. The boosted supply voltage is generated by boosting an input voltage. The voltage boosting is effectuate by a charge pump circuit operating synchronous to assertion of the AC drive signal with a charge transfer time that is adaptable to different capacitive load conditions.

公开(公告)号：US20180011596A1

公开(公告)日：2018-01-11

申请号：US15207105

申请日：2016-07-11

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Lokesh Kumar Korapati ,  Manivannan Ponnarasu ,  Mythreyi Nagarajan

IPC: G06F3/041 ,  G06F3/01 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04104

Abstract: A method of foreign matter rejection for multi-touch capacitive touch screens includes performing touch detection in both self-capacitance mode and mutual capacitance mode. By combining information from both modes, a distinction is identified between wanted touches, such as by a finger or stylus, and unwanted touches such as by foreign matter.

公开(公告)号：US09772696B2

公开(公告)日：2017-09-26

申请号：US14199510

申请日：2014-03-06

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Leonard Liviu Dinu ,  Chee Weng Cheong

IPC: H04L7/00 ,  H04L25/00 ,  H04L25/40 ,  G06F3/0354 ,  G06F3/041 ,  H03L7/00

CPC classification number: G06F3/03545 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/0384 ,  H03L7/00

Abstract: A system and method for compensating for detected phase errors during communications between synchronized devices. In an embodiment, the two devices may be a touch screen device and a synchronized stylus device. To this end, the touch screen device includes a controller configured to receive data signals from the stylus at specific time intervals. The touch screen device generates an internal control signal for receiving the incoming data signals at an expected frequency. The touch screen device further includes circuitry for measuring differences in the time a data signal is actually received against when the data signal was expected to be received and determines a time difference (e.g., a phase error). Then, the internal control signal may be adjusted to compensate for the accumulated phase error. Such a measurement and compensation helps ensure that communications remain in synchronization without having to reestablish synchronization through a cumbersome synchronization process.

公开(公告)号：US20170269740A1

公开(公告)日：2017-09-21

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: G06F3/044 ,  G06F3/038 ,  G06F3/0354 ,  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.

公开(公告)号：US20170249030A1

公开(公告)日：2017-08-31

申请号：US15056107

申请日：2016-02-29

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Dylan Park ,  Jerry Kim

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F2203/04105

Abstract: The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. This variation in thickness improves performance uniformity of the force sensor by compensating for the displacement potential (i.e., flexibility) of the sensing electrodes so that a force touch applied to the touch surface is measured consistently regardless of the location of the force touch on the touch surface.

公开(公告)号：US20170103729A1

公开(公告)日：2017-04-13

申请号：US14969255

申请日：2015-12-15

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Yong HUANG ,  Lucas HUI

IPC: G09G5/06 ,  G06T5/20

CPC classification number: G06T5/20 ,  G06T5/008 ,  G06T2207/10024 ,  G09G5/02 ,  G09G5/10 ,  G09G2320/0271 ,  G09G2320/0673 ,  G09G2340/06 ,  G09G2360/16 ,  H04N5/144 ,  H04N5/20 ,  H04N5/202 ,  H04N5/57 ,  H04N5/76 ,  H04N9/68 ,  H04N9/77 ,  H04N11/004

Abstract: Various embodiments provide tone mapping of images and video from one dynamic range to an available dynamic range of a display device while preserving or enhancing image details. According to one embodiment, an enhanced tone mapping module is configured to decrease a luminance of an image or video from a high dynamic range to a standard dynamic range. Conversely, according to one embodiment, an enhanced inverse tone mapper to increase a luminance of an image or video from a standard dynamic range to a high dynamic range.

公开(公告)号：US09609312B2

公开(公告)日：2017-03-28

申请号：US13723584

申请日：2012-12-21

Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

Inventor： Lucas Hui

IPC: H04N15/00 ,  H04N13/04 ,  H04N13/00

CPC classification number: H04N13/334 ,  H04N13/106

Abstract: Ghosting of images can be produced by the use anaglyph techniques to produce stereoscopic images. Ghost effects can be produced when filtering is applied to images by displays such as televisions or monitors. Techniques and apparatus are described for reducing or cancelling ghost effects. Anaglyph ghost reduction information can be produced to reduce or cancel ghost effects.