公开(公告)号：US20210294449A1

公开(公告)日：2021-09-23

申请号：US16821599

申请日：2020-03-17

Applicant: SYNAPTICS INCORPORATED

Inventor： Guozhong SHEN ,  Ozan Ersan ERDOGAN

IPC: G06F3/041 ,  G06F3/044

Abstract: A system and method for interference detection comprises coupling, in a first mode, an input of a first receiver channel with an input of a second receiver channel. In the first mode, the first receiver channel generates a first output signal by mixing a first portion of a combined resulting signal with a first mixing signal having a first phase. The combined resulting signal is simultaneously received from a first sensor electrode and a second sensor electrode. Further, in the first mode, the second receiver channel generates a second output signal by mixing a second portion of the combined resulting signal with a second mixing signal having a second phase orthogonal to the first phase. The first portion of the combined resulting signal differs from the second portion of the combined resulting signal.

公开(公告)号：US20190114030A1

公开(公告)日：2019-04-18

申请号：US16217037

申请日：2018-12-11

Applicant: SYNAPTICS INCORPORATED

Inventor： Guozhong SHEN

IPC: G06F3/041 ,  G06F3/044 ,  G06K9/00 ,  G06F3/042

Abstract: Embodiments herein provide a dual optical and capacitance sensor. During a first time period, the dual sensor uses optical sensing to capture a fingerprint (e.g., to identify or verify the fingerprint). During a second time period, the dual sensor uses one or more capacitive sensor electrodes to perform capacitive sensing. The capacitive sensing may be absolute capacitive sensing or transcapacitive sensing.

公开(公告)号：US20250077022A1

公开(公告)日：2025-03-06

申请号：US18595752

申请日：2024-03-05

Applicant: Synaptics Incorporated

Inventor： Guozhong SHEN ,  Xinyu LI

IPC: G06F3/041 ,  G06F3/044

Abstract: An input device includes a plurality of sensor electrodes and a processing system connected to the plurality of sensor electrodes. The plurality of sensor electrodes includes transmitter electrodes and receiver electrodes. The processing system is configured to perform single-burst multi-frequency presence detection, wherein performing single-burst multi-frequency presence detection includes: driving the transmitter electrodes of the plurality of electrodes with transmitter signals having different frequencies; obtaining resulting signals via the receiver electrodes of the plurality of electrodes based on the transmitter signals driven onto the transmitter electrodes; and detecting whether an input object is present within a sensing region of the input device based on the obtained resulting signals.

公开(公告)号：US20180314379A1

公开(公告)日：2018-11-01

申请号：US15696141

申请日：2017-09-05

Applicant: SYNAPTICS INCORPORATED

Inventor： Guozhong SHEN

IPC: G06F3/041 ,  G06F3/044 ,  G06K9/00

CPC classification number: G06F3/0416 ,  G06F3/0421 ,  G06F3/044 ,  G06F2203/04106 ,  G06K9/0004 ,  G06K9/0008

Abstract: Embodiments herein provide a dual optical and capacitance sensor. During a first time period, the dual sensor uses optical sensing to capture a fingerprint (e.g., to identify or verify the fingerprint). During a second time period, the dual sensor uses one or more capacitive sensor electrodes to perform capacitive sensing. The capacitive sensing may be absolute capacitive sensing or transcapacitive sensing.

公开(公告)号：US20190318147A1

公开(公告)日：2019-10-17

申请号：US16368741

申请日：2019-03-28

Applicant: Synaptics Incorporated

Inventor： Guozhong SHEN ,  Ozan Ersan ERDOGAN

IPC: G06K9/00 ,  G01D5/24 ,  H03K3/356

Abstract: An example gate driver for an array of sensing pixels is disclosed. The gate driver includes a first flip-flop including a first data input and a first data output. The first data output is coupled to a first group of sensing pixels of the array. The gate driver also includes a second flip-flop including a second data input and a second data output. The second data output is coupled to a second group of sensing pixels of the array. The gate driver further includes a first insertion circuit configured to receive a first start signal and to cause, based on the first start signal, the second flip-flop to drive the second group of sensing pixels without the first flip-flop driving the first group of sensing pixels for a scan of the array.

公开(公告)号：US20190026523A1

公开(公告)日：2019-01-24

申请号：US16036615

申请日：2018-07-16

Applicant: Synaptics Incorporated

Inventor： Guozhong SHEN ,  Richard KLENKLER ,  Paul WICKBOLDT ,  Young Seen LEE ,  Patrick SMITH ,  Bob Lee MACKEY ,  Marek MIENKO ,  Arash Akhavan FOMANI ,  Alvin JEE ,  Erik Jonathon THOMPSON ,  Bjoren DAVIS

IPC: G06K9/00 ,  G02B6/25 ,  G02B6/42 ,  G02B27/30 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

Abstract: Disclosed is a device for optical sensing, comprising: a display comprising a transparent substrate and a plurality of light emitters disposed above the transparent substrate; a transparent cover layer disposed above the display, wherein a top surface of the transparent cover layer provides an input surface for sensing an input object; and, an angled filter disposed below the transparent substrate of the display, wherein the angled filter is configured to allow light within a tolerance angle of an acceptance angle to pass through the angled filter, wherein the acceptance angle is centered around a non-zero angle relative to a normal of the input surface.

公开(公告)号：US20210223907A1

公开(公告)日：2021-07-22

申请号：US16744483

申请日：2020-01-16

Applicant: SYNAPTICS INCORPORATED

Inventor： David HOCH ,  Guozhong SHEN

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0362

Abstract: A system and method for capacitive sensing comprises driving a first sensor electrode of a plurality of sensor electrodes with a first sensing signal to acquire a first resulting signal with the first sensor electrode during a period and driving a second sensor electrode of the plurality of sensor electrodes with the first sensing signal to acquire a second resulting signal with the second sensor electrode during the period. Further, a third sensor electrode of the plurality of sensor electrodes is driven with a reference signal during the period. Rotational information for an input object is determined at least partially based on the first resulting signal and the second resulting signal.

公开(公告)号：US20210055824A1

公开(公告)日：2021-02-25

申请号：US16904384

申请日：2020-06-17

Applicant: SYNAPTICS INCORPORATED

Inventor： Guozhong SHEN

IPC: G06F3/041 ,  G06F3/044

Abstract: A processing system comprises sensor circuitry and a baseline correction mechanism. The sensor circuitry comprises a receiver channel having an input configured to acquire a resulting signal from a sensor electrode. A background capacitance is formed between the sensor electrode and a conductive element. The baseline correction mechanism is coupled to the input of the receiver channel. The baseline correction mechanism comprises a resistive element configured to be driven with a compensation signal to at least partially mitigate the background capacitance.

公开(公告)号：US20180300522A1

公开(公告)日：2018-10-18

申请号：US15953056

申请日：2018-04-13

Applicant: SYNAPTICS INCORPORATED

Inventor： Guozhong SHEN ,  Taehee CHO ,  Yongqian TANG ,  Mandar KULKARNI ,  Ozan Ersan ERDOGAN ,  Shubha RAMAKRISHNAN ,  Pascale EL KALLASSI

IPC: G06K9/00

Abstract: An integrated sensing device comprising a force sensor and fingerprint sensor disposed on different portions of a flexible circuit. The fingerprint sensor is disposed on a first portion of the flexible circuit and the force sensor is disposed on a second portion and the flexible circuit is configured such that the first portion is over the second portion. The force sensor comprises a compressible layer and one or more one force electrodes, where the compressible layer is disposed between the first and second portions.