公开(公告)号：US09063601B2

公开(公告)日：2015-06-23

申请号：US14448893

申请日：2014-07-31

Applicant: Apple Inc.

Inventor： Minh-Dieu Thi Vu ,  Thomas James Wilson ,  Christoph H. Krah

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F1/3262 ,  G06F3/03545 ,  G06F3/041 ,  G06F3/044 ,  G06F2203/04104

Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.

Abstract translation: 公开了一种能够自主扫描传感器面板的装置。 可以通过实现信道扫描逻辑来执行自主扫描。 在一个实施例中，信道扫描逻辑执行处理器通常将承担的许多功能，包括产生定时序列和获得结果数据; 将扫描结果数据与阈值进行比较（例如，以自动扫描模式）; 生成行数; 选择一个或多个扫描频带; 电源管理控制; 并以低功率模式执行自动扫描程序。

公开(公告)号：US20140092066A1

公开(公告)日：2014-04-03

申请号：US14100827

申请日：2013-12-09

Applicant: Apple Inc.

Inventor： Thomas James Wilson

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0416

Abstract: This relates to an architecture of a receive channel circuit used during both a spectrum analysis phase and a touch panel detection phase. Various components of the receive channel can be used during both the spectrum analysis phase and the touch panel detection phase. For example, a plurality of digital signal mixers used in the receive channel circuit can be used to demodulate signals during both a spectrum analysis phase and a touch sensor panel detection phase. In addition, the number of digital mixers needed in the receive channel can be reduced by dividing groups of signals to be demodulated into multiple sets of signals and demodulating each set at different times. Furthermore, the size of a sine look-up table (LUT) used to generate sine waveforms can be reduced by taking advantage of the symmetry of the sine waveform. For example, a quarter of a sine waveform can be saved in the LUT and the remaining quadrants of the waveform can be derived based on the symmetry of the sine wave.

Abstract translation: 这涉及在频谱分析阶段和触摸屏检测阶段期间使用的接收信道电路的架构。 可以在频谱分析阶段和触摸屏检测阶段期间使用接收通道的各种组件。 例如，在频谱分析阶段和触摸传感器面板检测阶段期间，可以使用在接收通道电路中使用的多个数字信号混合器来解调信号。 此外，可以通过将要解调的信号组划分成多组信号并在不同时间对每组进行解调来减少接收信道中所需的数字混频器的数量。 此外，通过利用正弦波形的对称性，可以减少用于产生正弦波形的正弦查找表（LUT）的大小。 例如，可以在LUT中保存四分之一的正弦波形，并且可以基于正弦波的对称性导出波形的剩余象限。

公开(公告)号：US20140049497A1

公开(公告)日：2014-02-20

申请号：US14047808

申请日：2013-10-07

Applicant: Apple Inc.

Inventor： Christoph Horst Krah ,  Thomas James Wilson

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0418 ,  G06F3/044

Abstract: A touch controller with improved diagnostics calibration and communication support includes a data capture register configured to sample data from one or a plurality of touch panel sense channels at an output of an analog to digital (A/D) converter. The sampled data is bit packed, and a demodulation waveform is captured, correlated with the sampled data. The contents of the data capture register, including the sampled data and the demodulation waveform, are transferred to a memory configured to create one or more records from the transferred contents. A processor can be used to extract the one or more records captured in the memory to display to a user for diagnostics or calibration.

Abstract translation: 具有改进的诊断校准和通信支持的触摸控制器包括数据捕获寄存器，其被配置为在模数（A / D）转换器的输出处对来自一个或多个触摸面板感测通道的数据进行采样。 采样数据被打包，并且捕获解调波形，与采样数据相关。 包括采样数据和解调波形的数据捕获寄存器的内容被传送到被配置为从传送的内容创建一个或多个记录的存储器。 处理器可用于提取在存储器中捕获的一个或多个记录，以向用户显示诊断或校准。

公开(公告)号：US11592948B2

公开(公告)日：2023-02-28

申请号：US17480905

申请日：2021-09-21

Applicant: Apple Inc.

Inventor： Minh-Dieu Thi Vu ,  Thomas James Wilson ,  Christoph H. Krah

IPC: G06F3/044 ,  G06F3/0354 ,  G06F3/041 ,  G06F1/3234

Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.

公开(公告)号：US11132097B2

公开(公告)日：2021-09-28

申请号：US16882625

申请日：2020-05-25

Applicant: Apple Inc.

Inventor： Minh-Dieu Thi Vu ,  Thomas James Wilson ,  Christoph H. Krah

IPC: G06F3/044 ,  G06F3/0354 ,  G06F3/041 ,  G06F1/3234

Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.

公开(公告)号：US10712866B2

公开(公告)日：2020-07-14

申请号：US15176008

申请日：2016-06-07

Applicant: Apple Inc.

Inventor： Christoph H. Krah ,  Minh-Dieu Thi Vu ,  Thomas James Wilson

IPC: G09G5/00 ,  G06F3/041 ,  G06F1/3203 ,  G06F1/3234 ,  G06F3/044

Abstract: A system and method for autonomously scanning a sensor panel device is disclosed. A sensor panel processor can be disabled after a first predetermined amount of time has elapsed without the sensor panel device sensing any events. One or more system clocks can also be disabled to conserve power. While the processor and one or more system clocks are disabled, the sensor panel device can periodically autonomously scan the sensor panel for touch activity. If one or more results from the autonomous scans exceed a threshold, the sensor panel device re-enables the processor and one or more clocks to actively scan the sensor panel. If the threshold is not exceeded, the sensor panel device continues to periodically autonomously scan the sensor panel without intervention from the processor. The sensor panel device can periodically perform calibration functions to account for any drift that may be present in the system.

公开(公告)号：US10664095B2

公开(公告)日：2020-05-26

申请号：US16039216

申请日：2018-07-18

Applicant: Apple Inc.

Inventor： Minh-Dieu Thi Vu ,  Thomas James Wilson ,  Christoph H. Krah

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06F1/3234

Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.

公开(公告)号：US10042472B2

公开(公告)日：2018-08-07

申请号：US15658314

申请日：2017-07-24

Applicant: Apple Inc.

Inventor： Steven Porter Hotelling ,  Christoph Horst Krah ,  Marduke Yousefpor ,  Thomas James Wilson

IPC: G06F3/041 ,  G06F3/044 ,  G09G5/18

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F2203/04104 ,  G09G5/18

Abstract: A multi-stimulus controller for a multi-touch sensor is formed on a single integrated circuit (single-chip). The multi-stimulus controller includes a transmit oscillator, a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator, a plurality of transmit channels that transmit the drive signals simultaneously to drive the multi-touch sensor, a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor, a receive oscillator, and a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results, the demodulation section including a demodulator and a vector operator.

公开(公告)号：US09529415B2

公开(公告)日：2016-12-27

申请号：US14749524

申请日：2015-06-24

Applicant: Apple Inc.

Inventor： Christoph H. Krah ,  Thomas James Wilson

IPC: G06F1/32 ,  G06F3/041

CPC classification number: G06F1/3287 ,  G06F1/3215 ,  G06F1/3262 ,  G06F1/3296 ,  G06F3/041 ,  G06F3/0416 ,  Y02D50/20

Abstract: Power management for a touch controller is disclosed. The touch controller can include a transmit section for transmitting stimulation signals to an associated touch sensor panel to drive the panel, where the touch controller can selectively adjust the transmit section to reduce power during the transmission. The touch controller can also include a receive section for receiving touch signals resulting from the driving of the panel, where the touch controller can selectively adjust the receive section to reduce power during the receipt of the touch signals. The touch controller can also include a demodulation section for demodulating the received touch signals to obtain touch event results, where the touch controller can selectively adjust the demodulation section to reduce power during the demodulation of the touch signals. The touch controller can also selectively reduce power below present low levels during idle periods. The touch controller can be incorporated into a touch sensitive device.

Abstract translation: 公开了触摸控制器的电源管理。 触摸控制器可以包括用于将刺激信号发送到相关联的触摸传感器面板以驱动面板的发送部分，其中触摸控制器可以选择性地调整发送部分以减少传输期间的功率。 触摸控制器还可以包括用于接收由面板驱动产生的触摸信号的接收部分，其中触摸控制器可以选择性地调整接收部分以在接收触摸信号期间降低功率。 触摸控制器还可以包括用于解调接收到的触摸信号以获得触摸事件结果的解调部分，其中触摸控制器可以选择性地调整解调部分以在解调触摸信号期间降低功率。 触摸控制器还可以在空闲时段期间选择性地降低低于当前低电平的功率。 触摸控制器可以结合到触敏设备中。

公开(公告)号：US09207799B2

公开(公告)日：2015-12-08

申请号：US14338092

申请日：2014-07-22

Applicant: Apple Inc.

Inventor： Thomas James Wilson ,  Richard James Reeve

IPC: G06F3/041

CPC classification number: G06F1/12 ,  G06F3/0412 ,  G06F3/0416

Abstract: Touch sensing can be accomplished using master/slave touch controllers that transmit drive signals to a touch surface and process sense signals including superpositions resulting from master/slave drive signals. The master/slave can drive and sense different sets of lines, respectively, of the touch surface. A communication link between master/slave can be established by transmitting a clock signal between master/slave, transmitting a command including sequence information to the slave, and initiating a communication sequence from the clock signal and sequence information. The slave can receive/transmit communications from/to the master during first/second portions of the communication sequence, respectively. Touch sensing operations can be synchronized between master/slave by transmitting a command including phase alignment information from master to slave, and generating slave clock signals based on the clock signal and the phase alignment information, such that sense signal processing by master clock signals are in-phase with sense signal processing by slave clock signals.

Abstract translation: 可以使用将驱动信号传输到触摸表面的主/从触摸控制器来实现触摸感测，并且处理由主/从驱动信号引起的叠加的感测信号。 主/从机可以分别驱动和感测触摸面的不同的线组。 主/从机之间的通信链路可以通过在主机/从机之间发送时钟信号，向从机发送包括序列信息的命令，以及从时钟信号和序列信息发起通信序列来建立。 从机可以在通信序列的第一/第二部分分别接收/发送与主机的通信。 通过发送包括从主机到从机的相位对准信息的命令，以及基于时钟信号和相位对准信息产生从时钟信号，可以在主/从机之间同步触摸感测操作，使得主时钟信号的感测信号处理 通过从时钟信号进行感测信号处理。