Video coding with start code emulation prevention

Details Video coding with start code emulation prevention Video coding with start code emulation prevention

2004-07-09

2008-10-14

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S051000

Reexamination Certificate

active

07436328

ABSTRACT:
A low-complexity method for prevention of H.264 start code emulation by bit-handling routines with additional functionality. The low-complexity is achieved by employing a start code pre-determination scheme, which saves bitstream handling complexity by about 50% and 30% on the encoder and decoder sides, respectively. The start code emulation prevention has been embedded into the low-level bitstream handling routines. By doing so it avoids the use of the second bitstream buffer, maintains the decoder ability of using a circular bitstream buffer, and satisfies the BURST-aligned SDRAM access requirement.

REFERENCES:
Sullivan, U.S. Appl. No. 10/418,735, Methods and SYstems for preventing start code emulation at locations that include non-byte aligned and/or bit-shifted positions, filed Apr. 18, 2003.
Sullivan et al. (U.S. Appl No. 10/350,273), Methods and systems for start code emulation prevention and data stuffing, filed on Jan. 22, 2003.

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