Television – Bandwidth reduction system – Data rate reduction
Patent
1994-06-27
1996-07-30
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348410, 348411, 348415, 348699, 348700, 348716, 348717, H04N 712, H04N 964
Patent
active
055416586
ABSTRACT:
An image coding and decoding apparatus which can produce an improved amount of the effective data per time unit especially in a case where the image data are processed in the field unit. The apparatus includes: a subtracting unit which subtracts a reference image signal from an input image signal; a intra-frame coding unit which codes the image signal sent from the subtracting unit, and data on a reference image signal; and an inter-frame prediction unit which performs an image prediction process among previous or future image data and which sends the reference image signal to the subtracting unit and the intra-frame coding unit, wherein the apparatus is characterized in that the inter-frame prediction unit includes an input-output circuit in which pixel data of luminance signals are separated from those of color signals, and the thus separated pixel data are arranged in a single row of a horizontal direction as a minimum unit, so that the amount of effective data accessible in a time unit can be significantly increased in the course of processing data in the field unit.
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patent: 5124790 (1992-06-01), Nakayama
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patent: 5177797 (1993-01-01), Takenaka et al.
patent: 5347308 (1994-09-01), Wai
patent: 5384581 (1995-01-01), Ikeda
patent: 5408269 (1995-04-01), Tsukagoshi
patent: 5412435 (1995-05-01), Nakajima
Chin Tommy P.
Kabushiki Kaisha Toshiba
Rao Anand S.
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