DAVID PAUL BOGOSH
Pilots at Gardenia, Irvine, CA
License number
California A2892359
Issued Date
May 2016
Expiration Date
May 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
12 Gardenia, Irvine, CA 92620
Professional information
Handling Video Transition Errors In Video On Demand Streams
US Patent:
2004007, Apr 15, 2004
Filed:
Sep 27, 2002
Appl. No.:
10/259032
Inventors:
Xuemin Chen - San Diego CA, US
Jiang Fu - Irvine CA, US
David Bogosh - Irvine CA, US
Jiang Fu - Irvine CA, US
David Bogosh - Irvine CA, US
International Classification:
H04N007/173, H04N007/16, H04N007/00, H04N011/00
US Classification:
725/135000, 725/136000, 348/468000, 348/461000
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.
Handling Video Transition Errors In A Video On Demand Streams
US Patent:
2011021, Sep 1, 2011
Filed:
May 11, 2011
Appl. No.:
13/105311
Inventors:
Xuemin Chen - San Diego CA, US
Jiang Fu - Irvine CA, US
David P. Bogosh - Irvine CA, US
Jiang Fu - Irvine CA, US
David P. Bogosh - Irvine CA, US
International Classification:
H04N 7/173
US Classification:
725 93, 725100, 375E07027, 375E07132
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.