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公开(公告)号：US11644862B2
公开(公告)日：2023-05-09
申请号：US17199786
申请日：2021-03-12
Applicant: Synaptics Incorporated
Inventor： Jeremy Roberson , David Sobel
IPC: G06F1/12
CPC classification number: G06F1/12
Abstract: A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the sensing signals is synchronized for each of the IC chips and the clock signals of the slave IC chips are synchronized with the clock signal of the master IC chip.
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公开(公告)号：US11199458B2
公开(公告)日：2021-12-14
申请号：US16805413
申请日：2020-02-28
Applicant: SYNAPTICS INCORPORATED
Inventor： Tetsuo Tanemura , David Sobel
Abstract: A force sensing device includes a first force sensor and a second force sensor. The first force sensor is configured to output a first force resulting signal and includes a first strain gauge coupled to a first voltage source and a first trace. The first force sensor further includes a second strain gauge coupled to a second voltage source and the first trace. The second force sensor is configured to output a second force resulting signal having a polarity opposite that of the first force resulting signal. The second force sensor includes a first strain gauge coupled to the second voltage source and a second trace, and a second strain gauge coupled to the first voltage source and the second trace.
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公开(公告)号：US10203809B2
公开(公告)日：2019-02-12
申请号：US15605778
申请日：2017-05-25
Applicant: Synaptics Incorporated
Inventor： David Sobel , Peijun Shan
Abstract: An input device including: a first in-phase touch sensing block including: an analog mixer configured to mix a resulting signal associated with a capacitive sensor electrode with a local oscillator (LO) signal; an analog to digital converter (ADC) configured to convert an output of the analog mixer into a digital signal; and a first decimation filter configured to determine an in-phase component of an interference at a frequency of the LO signal based, at least in part, on the digital signal; and a first quadrature interference detection block including: a second decimation filter configured to determine a quadrature component of the interference at the frequency.
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公开(公告)号：US11159150B2
公开(公告)日：2021-10-26
申请号：US16869518
申请日：2020-05-07
Applicant: SYNAPTICS INCORPORATED
Inventor： Jeremy Roberson , David Sobel , Damien Berget
Abstract: Embodiments disclosed herein generally relate to electronic devices, and more specifically, to a waveform generation circuit for input devices. One or more embodiments provide a new waveform generator for an integrated touch and display driver (TDDI) and methods for generating a waveform for capacitive sensing with a finely tunable sensing frequency. A waveform generator includes accumulator circuitry, truncation circuitry, and saturation circuitry. The accumulator circuitry is configured to accumulate the phase increment value based on a clock signal, and output the accumulated phase increment value. The truncation circuitry configured to drop one or more bits of the accumulated phase increment value to output a truncated value. The saturation circuitry is configured to compare the truncated value to a saturation limit and output a signal corresponding to accessed data samples.
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公开(公告)号：US10686432B2
公开(公告)日：2020-06-16
申请号：US16201600
申请日：2018-11-27
Applicant: SYNAPTICS INCORPORATED
Inventor： Jeremy Roberson , David Sobel , Damien Berget
Abstract: Embodiments disclosed herein generally relate to electronic devices, and more specifically, to a waveform generation circuit for input devices. One or more embodiments provide a new waveform generator for an integrated touch and display driver (TDDI) and methods for generating a waveform for capacitive sensing with a finely tunable sensing frequency. A waveform generator includes accumulator circuitry, truncation circuitry, and saturation circuitry. The accumulator circuitry is configured to accumulate the phase increment value based on a clock signal, and output the accumulated phase increment value. The truncation circuitry configured to drop one or more bits of the accumulated phase increment value to output a truncated value. The saturation circuitry is configured to compare the truncated value to a saturation limit and output a signal corresponding to accessed data samples.
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Patent Agency Ranking
公开(公告)号：US09977519B2
公开(公告)日：2018-05-22
申请号：US15047773
申请日：2016-02-19
Applicant: Synaptics Incorporated
Inventor： Jeff Lukanc , Kirk Hargreaves , David Sobel , Joseph Kurth Reynolds
IPC: G06F3/0354 , G06F3/041 , G06F3/038 , G06F3/044
CPC classification number: G06F3/0383 , G06F3/03545 , G06F3/038 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/0384
Abstract: A processing system for an input device, the processing system including: a sensor module coupled to sensor circuitry and configured to: initiate a current beacon period including a plurality of timeslots by broadcasting a current beacon signal to a plurality of active pens; receive, during a first timeslot, a first downstream packet from a first active pen transceiver; and receive, during a second timeslot, a second downstream packet from a second active pen transceiver; and a determination module configured to: determine an attribute of a first active pen including the first active pen transceiver from at least the first downstream packet.
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公开(公告)号：US20210200259A1
公开(公告)日：2021-07-01
申请号：US17199786
申请日：2021-03-12
Applicant: Synaptics Incorporated
Inventor： Jeremy Roberson , David Sobel
IPC: G06F1/12
Abstract: A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the sensing signals is synchronized for each of the IC chips and the clock signals of the slave IC chips are synchronized with the clock signal of the master IC chip.
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公开(公告)号：US10983553B2
公开(公告)日：2021-04-20
申请号：US16178202
申请日：2018-11-01
Applicant: SYNAPTICS INCORPORATED
Inventor： Jeremy Roberson , David Sobel
IPC: G06F1/12
Abstract: A system and method for synchronizing multiple integrated circuit (IC) chips for an input device having a display device integrated with a capacitive sensing device. A first one of the IC chips is a master IC chip and a second one of the IC chips is a slave IC chip. The master IC chip is configured to transmit synchronization signals to and from the slave IC chip, such that capacitive frames are acquired by each of the IC chips at substantially the same time, the initiation of the sensing signals is synchronized for each of the IC chips and the clock signals of the slave IC chips are synchronized with the clock signal of the master IC chip.
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公开(公告)号：US10353518B2
公开(公告)日：2019-07-16
申请号：US15294672
申请日：2016-10-14
Applicant: SYNAPTICS INCORPORATED
Inventor： Vladan Petrovic , David Sobel
Abstract: An input device is configured to detect signals from of an input object. Examples include acquiring a first signal on a first sensor electrode of the input device; acquiring a second signal on a second sensor electrode of the input device; combining the first signal and the second signal to produce a combined signal; demodulating the combined signal to determine an in-phase component of the combined signal and a quadrature component of the combined signal; and combining the in-phase component and the quadrature component to determine signal magnitude information.
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公开(公告)号：US20180341364A1
公开(公告)日：2018-11-29
申请号：US15605778
申请日：2017-05-25
Applicant: Synaptics Incorporated
Inventor： David Sobel , Peijun Shan
CPC classification number: G06F3/0418 , G06F3/044
Abstract: An input device including: a first in-phase touch sensing block including: an analog mixer configured to mix a resulting signal associated with a capacitive sensor electrode with a local oscillator (LO) signal; an analog to digital converter (ADC) configured to convert an output of the analog mixer into a digital signal; and a first decimation filter configured to determine an in-phase component of an interference at a frequency of the LO signal based, at least in part, on the digital signal; and a first quadrature interference detection block including: a second decimation filter configured to determine a quadrature component of the interference at the frequency.
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