Highly efficient coding apparatus
AssigneeSony Corporation
InventorsTetsujiro Kondo, Michio Nagai, Norihisa Shirota
Life of this patent
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Abstract
A highly efficient coding apparatus is configured to divide a digital picture signal into picture blocks and, based on a signal from a coding circuit for performing variable-length coding of each picture block, generate an output signal in the form of serial sync blocks. By inserting the most significant bit of a coded output signal for each picture element in a predetermined position of each sync block, a reproduced picture is obtained in a picture search mode in which a magnetic head scans a video tape across a plurality of tracks.
Claims7
A highly efficient coding apparatus for coding digital video data in the form of blocks of digital video data representing plural picture elements so as to provide compressed video data for transmission by data transmission means having a predetermined transmission capacity, comprising:
- block segmentation means supplied with input video data for generating a series of blocks of digital video data representing plural picture elements,
- encoding means for encoding the digital video data in each block with a variable digitized bit number determined by characteristics of each block so as to provide coded data of variable bit length, and
- frame segmentation means for generating a series of sync block data, each of which includes a plurality of blocks of coded data, and at least the most important data portions of the coded data being located in predetermined portions of each sync block.
Dependencies are inferred from the claim text.