Pre-compensation for pre-toggling-induced artifacts in electronic displays

US10665157B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Hung Sheng Lin · San Jose, US
• Shengkui Gao · Shoreline, US
• Yingying Tang · Wilsonville, US
• Sean C. Chang · Mountain View, US
• Mohammad B. Vahid Far · San Jose, US
• Kasra Omid-Zohoor · Sunnyvale, US
• Chumin Zhao · Sunnyvale, US
• Jingyu Huang · San Diego, US
• Mohammad Ali Jangda · Santa Clara, US
• Hyunwoo Nho · Palo Alto, US
• Chaohao Wang · Sunnyvale, US
• Marc DeVincentis · Palo Alto, US
• Marc Albrecht · Hamburg, DE
• Warren S. Rieutort-Louis · Cupertino, US

Key dates

• Filing date: Apr 3, 2019
• Grant date: May 26, 2020
• Expiry date: Apr 3, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G2340/16
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Systems and methods reduce likelihood of hysteresis that reduces perceived image quality of a subsequent image frame by toggling the display pixels to relax the display pixels by overwriting previous image frame data. During non-emission periods of the pixels, the pixels may be pre-toggled or exercised to improve response time and accuracy of the pixel. Data for pixels being programmed may also be used to pre-toggle other pixels reducing overhead but increasing cross-talk. Since the amount of cross-talk is related to content of the pixels being pre-toggled, a line buffer may be used to store image data for the pixels being pre-toggled. This stored image data may be used to determine how much pre-compensation is to be applied to data for the pixels being programmed. In other words, an amount of compensation applied is based at least in part on the content (e.g., greyscale levels) of the image data.