Invention Grant
- Patent Title: Handling video transition errors in video on demand streams
- Patent Title (中): 处理视频点播流中的视频转换错误
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Application No.: US14484848Application Date: 2014-09-12
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Publication No.: US09467752B2Publication Date: 2016-10-11
- Inventor: Xuemin Chen , Jiang Fu , David P. Bogosh
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: BROADCOM CORPORATION
- Current Assignee: BROADCOM CORPORATION
- Current Assignee Address: US CA Irvine
- Agency: Foley & Lardner LLP
- Agent Christopher J. McKenna; Helen H. Zhang
- Main IPC: H04L27/06
- IPC: H04L27/06 ; H04N21/8547 ; H04N7/173 ; H04N5/06 ; H04N21/43 ; H04N21/44 ; H04N21/472

Abstract:
A system, method, and apparatus for handling transition errors is presented herein. The transition errors include handling unreported time base discontinuities during trick mode transition, miscalculated time stamps during trick mode transition, erroneous sequence end codes, and unreported broken group of picture transmission. Unreported time base discontinuities are detected by comparing the program clock reference (PCR) value of the data packet to the system time clock (STC). If the difference exceeds a predetermined threshold, the STC is set to the PCR value. Miscalculated time stamps are detected by examining the difference in PTS values between temporally adjacent data packets. If the difference is not within a margin of error from predetermined value, the PTS is disabled. Unreported broken groups of pictures are handled by skipping the first two B-frames of the first group of pictures following a trick mode transition. Erroneous sequence end codes are detected by determining whether a packet containing a sequence end code is associated with a time base change. If the packet is not associated with a time base change, the sequence end code is disregarded.
Public/Granted literature
- US20150055014A1 HANDLING VIDEO TRANSITION ERRORS IN VIDEO ON DEMAND STREAMS Public/Granted day:2015-02-26
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