MPEG system which decompresses and recompresses image data befor

Details MPEG system which decompresses and recompresses image data befor MPEG system which decompresses and recompresses image data befor

1996-06-19

1998-10-20

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348443, 348445, H04N 712, H04N 1102, H04N 1104, H04N 1120

Patent

active

058254242

ABSTRACT:
A television receiver with an MPEG decoder is configurable for full high definition decoding and display, or reduced cost lower definition display. The MPEG decoder (10-33) uses a controllable dual-mode data reduction network selectively employing horizontal detail reduction (29) and data re-compression (30) between the decoder and the decoder frame memory (20) from which image information to be displayed (27) is derived. The amount of data reduction is manufacturer selected in accordance with the resolution of the display device, e.g., equal to or less than high definition resolution. The frame memory size is also manufacturer selected in accordance with the resolution of the display device.

REFERENCES:
patent: 5262854 (1993-11-01), Ng
Preliminary Data for STi3500A MPEG-2/CCIR 601 Video Decoder, SGS-Thomson Microelectronics, 85 pgs.
Advance Data for for STI3220 Motion Estimation Processor, SGS-Thomson Microelectronics, Jul. 1992, 25 pgs.
Ang et al., Video Compression Makes Big Gains, IEEE Spectrum, Oct. 1991.
Sun, Hierarachical Decoder for MPEG Compressed Video Data, IEEE Transactions on Consumer Electronics, Aug. 1993.

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