公开(公告)号：US20130229164A1

公开(公告)日：2013-09-05

申请号：US13632078

申请日：2012-09-30

Applicant: APPLE INC.

Inventor： Ahmad AL-DAHLE ,  Yafei BI ,  Mir B. GHADERI ,  Wei H. YAO

IPC: G05F5/00

CPC classification number: G05F1/613

Abstract: One embodiment of an apparatus to control and sense a voltage through a single node can include a comparator to monitor single node voltage, a transistor to discharge voltage through the single node and control logic. The control logic can have at least two operational phases when actively controlling the voltage through the single node. In a first phase, the control logic can configure the comparator to determine if the single node voltage is greater than a reference voltage. In a second phase, the control logic can configure the transistor to discharge voltage through the single node when the comparator has previously indicated that the single node voltage is greater than a reference voltage. The control logic can alternatively execute first and second phases to discharge the voltage to a predetermined level.

Abstract translation: 用于控制和感测通过单个节点的电压的装置的一个实施例可包括监视单节点电压的比较器，通过单个节点放电电压的晶体管和控制逻辑。 当通过单个节点主动控制电压时，控制逻辑可以具有至少两个操作阶段。 在第一阶段中，控制逻辑可以配置比较器以确定单个节点电压是否大于参考电压。 在第二阶段中，当比较器先前已经指示单个节点电压大于参考电压时，控制逻辑可以配置晶体管以通过单个节点放电电压。 控制逻辑可替代地执行第一和第二阶段以将电压放电至预定水平。

公开(公告)号：US20180322827A1

公开(公告)日：2018-11-08

申请号：US15711585

申请日：2017-09-21

Applicant: Apple Inc.

Inventor： Sheng ZHANG ,  Chaohao WANG ,  Paolo SACCHETTO ,  Paul S. DRZAIC ,  Wei CHEN ,  Wei H. YAO

IPC: G09G3/3241 ,  G09G3/20

Abstract: A display device may include a display having a plurality of pixels. The display device may also include a replica pixel circuit having a switching device configured to output a first current based on a received voltage, a light-emitting diode (LED) configured to illuminate to a first gray level based on the first current output by the switching device, and current mirror circuitry configured to generate a second current that mirrors the first current. In addition, the replica pixel circuit may include a current source configured to output a reference current based on a voltage value that corresponds to the received voltage, comparator circuitry configured to determine a difference between the second current and the reference current, and voltage adjustment circuitry configured to adjust a source voltage output provided to the plurality of pixels based on the difference.

公开(公告)号：US20180158173A1

公开(公告)日：2018-06-07

申请号：US15711831

申请日：2017-09-21

Applicant: Apple Inc.

Inventor： Shengkui GAO ,  Hung Sheng LIN ,  Hyunsoo KIM ,  Hyunwoo NHO ,  Katherine W. SONG ,  Mohammad HAJIROSTAM ,  Myung-Je CHO ,  Rui ZHANG ,  Sang Y. YOUN ,  Wei H. YAO ,  Yafei BI

IPC: G06T3/40 ,  G06T5/00 ,  G06T7/00 ,  G06T7/90

CPC classification number: G06T3/40 ,  G06T5/001 ,  G06T5/009 ,  G06T7/0002 ,  G06T7/90

Abstract: A display device may include a display having a pixels and a processor. The processor may receive image data, determine a digital offset value for a pixel based on a location of the pixel, such that the digital offset value compensates for one or more non-uniformity properties of the pixel. The processor may determine a scale factor associated with the pixel based on at least two of a luminance setting for the display, a driving mode of the display, and a gray level value for the pixel. The processor may then generate correction image data by applying the scale factor to the digital offset value, generate compensated image data based on the correction image data and the image data, and provide the compensated image data to the display.