Pixel leakage and internal resistance compensation systems and methods

    公开(公告)号:US11170690B2

    公开(公告)日:2021-11-09

    申请号:US17003730

    申请日:2020-08-26

    Applicant: Apple Inc.

    Abstract: An electronic device may include an electronic display having multiple pixels to display an image based on processed image data. Each of the pixels may include multiple sub-pixels. The electronic device may also include image processing circuitry to receive input image data, in a first color space, having luminance values for each of the sub-pixels. The circuitry may also map the input image data from the first color space to a second color space and apply a multi-dimensional lookup table, based on the input image data in the second color space, to generate compensated image data. The lookup table may receive the luminance values for each of the sub-pixels and output corrected luminance values compensated for an expected amount of current leakage between the sub-pixels. The circuitry may also inversely map the compensated image data from the second color space to the first color space to generate the processed image data.

    System and method for supporting antenna beamforming in a cellular network

    公开(公告)号:US10686510B2

    公开(公告)日:2020-06-16

    申请号:US16289783

    申请日:2019-03-01

    Applicant: Apple Inc.

    Abstract: The present invention is a method and system for supporting a beamforming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improves user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment.

    System and Method for Supporting Antenna Beamforming in a Cellular Network

    公开(公告)号:US20190268057A1

    公开(公告)日:2019-08-29

    申请号:US16289783

    申请日:2019-03-01

    Applicant: Apple Inc.

    Abstract: The present invention is a method and system for supporting a beamforming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improves user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment.

    System and method for supporting antenna beamforming in a cellular network

    公开(公告)号:US10263683B2

    公开(公告)日:2019-04-16

    申请号:US15969108

    申请日:2018-05-02

    Applicant: Apple Inc.

    Abstract: The present invention is a method and system for supporting a beamforming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improves user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment.

    METHOD AND SYSTEM FOR USER EQUIPMENT LOCATION DETERMINATION ON A WIRELESS TRANSMISSION SYSTEM

    公开(公告)号:US20190033424A1

    公开(公告)日:2019-01-31

    申请号:US16136862

    申请日:2018-09-20

    Applicant: Apple Inc.

    CPC classification number: G01S5/10 H04L5/0007 H04W24/10 H04W64/00

    Abstract: Neighbor cell hearability can be improved by including an additional reference signal that can be detected at a low sensitivity and a low signal-to-noise ratio, by introducing non-unity frequency reuse for the signals used for a time difference of arrival (TDOA) measurement, e.g., orthogonality of signals transmitted from the serving cell sites and the various neighbor cell sites. The new reference signal, called the TDOA-RS, is proposed to improve the hearability of neighbor cells in a cellular network that deploys 3GPP EUTRAN (LTE) system, and the TDOA-RS can be transmitted in any resource blocks (RB) for PDSCH and/or MBSFN subframe, regardless of whether the latter is on a carrier supporting both PMCH and PDSCH or not. Besides the additional TDOA-RS reference signal, an additional synchronization signal (TDOA-sync) may also be included to improve the hearability of neighbor cells.

    System and Method for Supporting Antenna Beamforming in a Cellular Network

    公开(公告)号:US20170244464A1

    公开(公告)日:2017-08-24

    申请号:US15590151

    申请日:2017-05-09

    Applicant: Apple Inc.

    Abstract: The present invention is a method and system for supporting a beamforming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network fornling at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improves user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment.

    Providing Acknowledgement Information by a Wireless Device
    10.
    发明申请
    Providing Acknowledgement Information by a Wireless Device 审中-公开
    通过无线设备提供确认信息

    公开(公告)号:US20160036567A1

    公开(公告)日:2016-02-04

    申请号:US14883800

    申请日:2015-10-15

    Applicant: Apple Inc.

    Inventor: Jun Li Lai King Tee

    CPC classification number: H04L1/1635 H04L1/1858 H04W28/04 H04W72/0406

    Abstract: In general, to provide acknowledgment information by a first wireless device, the first wireless device sends repeated instances of acknowledgment information in respective first and second frame structures, in response to receipt of first information from a second wireless device. In addition, the first wireless device also sends further acknowledgment information in the second frame structure that is responsive to second information received from the second wireless device.

    Abstract translation: 通常,为了通过第一无线设备提供确认信息,响应于从第二无线设备接收到第一信息,第一无线设备在相应的第一和第二帧结构中发送确认信息的重复实例。 此外,第一无线设备还在响应于从第二无线设备接收的第二信息的第二帧结构中发送另外的确认信息。

Patent Agency Ranking