Digital recording and/or reproduction apparatus of video signal rearranging main components within a fixed length block

An apparatus for reproducing digitally a recorded digital video signal, at the time of recording said digital video signal, a plurality of small blocks are formed each including a plurality of pixels in the horizontal direction and the vertical direction of a supplied digital signal to be recorded, a plurality of large blocks are formed each including a plurality of said small blocks located distant from each other on a screen, said digital video signal is coded for each of said small blocks constituting said large block, a fixed length block is formed by controlling the code amount for each said large block so that the total code amount of the plurality of said small blocks constituting said large block is constant, said fixed length block is divided into a plurality of recording blocks so that respective main components of the plurality of said small blocks constituting said fixed length block are included separately in the plurality of recording blocks, a plurality of error correction blocks are formed by applying coding for error correction to be made at the time of reproduction to said plurality of recording blocks, said plurality of recording blocks included in said plurality of error correction blocks are rearranged on the basis of said recording block so that recording blocks including the main components of small blocks adjacent to each other on a screen are also adjacent on a recording medium, said rearranged plurality of recording blocks are recorded on said recording medium,

• said digital reproduction apparatus comprising:
• means for detecting a plurality of said recording blocks recorded on said recording medium,
• means for rearranging said detected recording blocks on the basis of said recording block to be included in said plurality of error correction blocks in the original order prior to recording,
• means for restoring the recording blocks at the time of recording by applying an error correction process to said rearranged recording blocks to correct an error generated at the time of reproduction,
• means for reconstructing said fixed length block from the plurality of said recording blocks constituting said large block,
• means for decoding said digital video signal for each of the plurality of said small blocks constituting said reconstructed fixed length block,
• means for concealing the contents of each said small block to reduce the effect of an error to a reproduced picture when error correction could not be carried out by said error correction means, and
• means for rearranging the plurality of small blocks constituting said fixed length block to restore pixels corresponding to the digital video signal at the time of recording.

An apparatus for recording digitally a supplied digital video signal and for reproducing digitally a recorded digital video signal, comprising:

• means for forming a plurality of small blocks, each including a plurality of pixels in the horizontal direction and the vertical direction of said digital video signal,
• means for forming a plurality of large blocks, each including a plurality of said small blocks located distant from each other on a screen,
• means for coding said digital video signal for each of said small blocks constituting said large block,
• means for controlling the code amount for each said large block so that the total code amount of the plurality of said small blocks constituting said large block is constant to form a fixed length block,
• means for dividing said fixed length block into a plurality of recording blocks so that respective main components of the plurality of said small blocks constituting said fixed length block are included separately in the plurality of recording blocks,
• means for applying coding for error correction to be made at the time of reproduction to said plurality of recording blocks to form a plurality of error correction blocks,
• means for rearranging said plurality of recording blocks included in said plurality of error correction blocks on the basis of said recording block so that recording blocks including the main components of small blocks adjacent to each other on a screen are also adjacent on a recording medium,
• means for recording said rearranged plurality of recording blocks onto said recording medium,
• means for detecting said plurality of said recording blocks recorded on said recording medium,
• means for rearranging said detected recording blocks on the basis of said recording block to be included in said plurality of error correction blocks in the original order prior to recording,
• means for restoring the recording blocks at the time of recording by applying an error correction process to said rearranged recording blocks to correct an error generated at the time of reproduction,
• means for reconstructing said fixed length block from the plurality of said recording blocks constituting said large block,
• means for decoding said digital video signal for each of the plurality of said small blocks constituting said reconstructed fixed length block,
• means for concealing the contents of each said small block to reduce the effect of an error to a reproduced picture when error correction could not be carried out by said error correction means, and
• means for rearranging the plurality of small blocks constituting said fixed length block to restore pixels corresponding to the digital video signal at the time of recording.