Television – Bandwidth reduction system – Data rate reduction
Patent
1995-06-14
1999-03-09
Lee, Richard
Television
Bandwidth reduction system
Data rate reduction
348715, H04N 732
Patent
active
058807861
ABSTRACT:
An apparatus for picture decoding includes a decoder unit for obtaining decoded picture data by decoding coded data of a video signal coded by at least one of intra-frame coding (I frame), inter-frame coding (P frame), and frame-interpolation coding (B frame); a memory unit including a first frame memory, a second frame memory, and a third frame memory commonly connected to one data bus and one address bus; a display unit for reading the decoded picture data stored in the memory unit in field units based on a display synchronization signal and obtaining interlace-scanned display picture data; and a time control unit for reading the decoded picture data from the first frame memory and the second frame memory as reference frames for the B frame, and for controlling a time difference between a time of writing decoded picture data in the third frame memory, and a time of reading decoded picture data for display by the display unit, from the third frame memory, for reading decoded picture data before rewriting the same addresses, thereby attaining simultaneous read and write of the third frame memory at frame units.
REFERENCES:
patent: 5247363 (1993-09-01), Sun et al.
patent: 5353119 (1994-10-01), Dorricott et al.
patent: 5386234 (1995-01-01), Veltman et al.
patent: 5453799 (1995-09-01), Yang et al.
patent: 5457675 (1995-10-01), Suzuki et al.
patent: 5534928 (1996-07-01), Iwamura
patent: 5543847 (1996-08-01), Kato
The Journal of the Institute of Televison Engineers of Japan, vol. 48, No. 1, pp. 44 to 49, "MPEG2 / H.262" (No Translation).
IEICE, Spring Conference, C-659, 1994, pp. 5-227 (No Transaction).
ISSCC94 (1994 Internaional Solid-State Circuits Conference), Session 4, Video and Communication Signal Processors, Paper WP4.4. pp. 56-57 & 72-73.
Fujii Yukio
Mizosoe Hiroyuki
Oku Masuo
Tsuboi Yukitoshi
Hitachi , Ltd.
Lee Richard
LandOfFree
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