Invention Grant
- Patent Title: System for video frame synchronization using sub-frame memories
- Patent Title (中): 使用子帧存储器进行视频帧同步的系统
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Application No.: US12840955Application Date: 2010-07-21
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Publication No.: US08634023B2Publication Date: 2014-01-21
- Inventor: Andrew Bridges , Edouard Karam
- Applicant: Andrew Bridges , Edouard Karam
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Haynes and Boone, LLP
- Main IPC: H04N7/01
- IPC: H04N7/01

Abstract:
A circuit and a method of using the circuit for video frame synchronization are provided. The circuit includes a memory having a capacity less than a full video frame and a “first in first out” (FIFO) interface controlling the memory, further removing the post-read buffer in the memory, and overwriting the post-read buffer in the memory with new data. Some embodiments of the circuit for video frame synchronization provide a wide data bus having a high bandwidth interface to the memory circuit to allow reduced memory clock rate. Some embodiments of the circuit further include a processor that produces a clock signal and measures an input data rate. The processor controls the FIFO interface to generate an output data stream at a preselected frequency, with a preselected phase. More generally, other embodiments of the present invention provide a circuit wherein the processor may be used as a data rate converter and video input timing aberration filter.
Public/Granted literature
- US20110019089A1 SYSTEM FOR VIDEO FRAME SYNCHRONIZATION USING SUB-FRAME MEMORIES Public/Granted day:2011-01-27
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