METHOD FOR PROCESSING COLOR VIDEO SIGNAL

• Main Authors: SHIMOKOORIYAMA MAKOTO, ISHII YOSHISUE
• Format: Patent
• Language: English
• Published: 18.10.1989
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

PURPOSE:To efficiently encode a block on the two kinds of color difference signals by block-encoding the color difference signal information-compressed by sub-sampling. CONSTITUTION:The data of a luminance signal Y read from a blocking circuit 10 are block-encoded in an encoding circuit 12 and are outputted after cutting down an information quantity. On the other hand, color signals CN and CW digitalized at A/D converters 14 and 16, respectively, are sub-sampled in FOSS circuits 18 and 20. The sub-sampled color difference signals CN and CW are time-multiplexed by a multiplexing circuit 21. The multiplex signals of the CN and CW outputted from the multiplexing circuit 21 are arrange-converted every block involving the CN and CW by a blocking circuit 23 and are supplied to an encoding circuit 25. The multiplex signals of the CN and CW block-encoded in the encoding circuit 25 are time-axis-multiplexed in a multiplexing circuit 30 with the block-encoded luminance signal.