Memory manager for MPEG decoder

Details Memory manager for MPEG decoder Memory manager for MPEG decoder

1997-04-14

2000-09-19

Le, Vu

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

348426, 348714, H04N 712

Patent

active

061223158

ABSTRACT:
An MPEG decoder operates in 2.5 frame store mode, and has an efficient memory management which allows a B picture to be stored and displayed while simultaneously making use of a portion of the frame store memory. The video frame is treated as a grid, having rows of 8.times.8 pixel blocks. The pixel blocks are manipulated in three FIFOs which are cross-connected in a closed loop. Two processes operate on the memory so arranged: (1) a video reconstruction process which writes data into the memory, and (2) a display process, which accesses the memory and writes the video frame into another, external memory in a rastered format. One of the three cross-coupled FIFOs is designated for write-back, and the other two for reading 2:1 interlaced raster data. The two FIFOs utilized for the raster operation are allocated to the alternate lines of the picture.

REFERENCES:
patent: 4689823 (1987-08-01), Wojcik et al.
patent: 4692880 (1987-09-01), Merz et al.
patent: 4799056 (1989-01-01), Hattori et al.
patent: 5161221 (1992-11-01), Van Nostrand
patent: 5174641 (1992-12-01), Lim
patent: 5200925 (1993-04-01), Morooka
patent: 5274788 (1993-12-01), Koike
patent: 5287470 (1994-02-01), Simpson
patent: 5297271 (1994-03-01), Bhayani
patent: 5319460 (1994-06-01), Kubo
patent: 5321806 (1994-06-01), Meinerth et al.
patent: 5357606 (1994-10-01), Adams
patent: 5369418 (1994-11-01), Richards
patent: 5396592 (1995-03-01), Fujimoto
patent: 5430488 (1995-07-01), Hedley
patent: 5446866 (1995-08-01), Drako et al.
patent: 5457482 (1995-10-01), Rhoden et al.
patent: 5488432 (1996-01-01), Guillon et al.
patent: 5495291 (1996-02-01), Adams
patent: 5502494 (1996-03-01), Auld
patent: 5553005 (1996-09-01), Voeten et al.
patent: 5572691 (1996-11-01), Koudmani
patent: 5828425 (1998-10-01), Kim
patent: 5838597 (1998-11-01), Pau et al.
patent: 5844614 (1998-12-01), Chong et al.
patent: 5883670 (1999-03-01), Sporer et al.
patent: 5912676 (1999-06-01), Malladi et al.
patent: 5963260 (1999-10-01), Bakhmutsky

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