Apple Inc.

Vlsi Technology, Inc.

Eric A Hildebrandt

Gary D Hicok

Xiang Lu

John T Wetherell

Stanley B Wang

Young Don Bae

Nikhil Acharya

Haitao Li

Sunmin Jang

Hari P Paudel

Shengzhe Jiao

Jeongsup Lee

Micheal H Zhu

An electronic device may include an electronic display including display pixels to display an image based on compensated image data. As image data is written to a pixel in the row of pixels, capacitive coupling at a driver may lead to distortion on the driver. In particular, the capacitive coupling may cause distortion at a storage capacitor, which may lead to current droop at the pixel. The current droop may be reduced or eliminated in each pixel by performing pixel compensation. The pattern of the pixel compensation may be selected such that, over a number of subframes, an average amount of light is the same or similar to what would be emitted had pixel compensation been performed on each pixel in each subframe.

In-pixel compensation for current droop and in-pixel compensation timing

A look ahead read buffer automatically senses the direction of the read sequence, sets the direction based on the current and previous read addresses, and prefetches data from memory to allow a Host device such as a CPU to read data out of the look ahead read buffer with no wait states, rather than accessing this data directly in slower memory that requires wait states. This read buffer is especially useful in applications such as display controllers that store and retrieve data in sequential format. The display memory may be partitioned into pages, and the read buffer will then determine and set the appropriate direction at page boundaries, and will not change direction within that page of display data. In addition, the read buffer inhibits reads that occur outside of the current page of display data, ignoring the effects of other reads that do not directly affect the display.

Dynamic direction look ahead read buffer

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San Jose, CA, United States of America

Eric A Hildebrandt