Helical scan data recording apparatus and a helical scan data reproducing apparatus

A helical scan data recording apparatus comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks, each block including a predetermined amount of said data from said storing means, said data blocks including video data blocks and corresponding sound data blocks having a common block size corresponding to said predetermined amount of data, whereby said check code generation means generates said check code data using the same check code system between said video data blocks and said corresponding sound data blocks, generating check code data in accordance with said data, and storing said check code data in said storing means for each of said data blocks corresponding to said data
• interleaving means for interleaving a predetermined number of said data blocks with each other using said storing means in accordance with interleaving type data, said predetermined number of said data blocks providing a portion of an editing unit;
• and
• recording means for recording the interleaved data blocks and said check code data corresponding to the interleaved data blocks on a magnetic tape through helical scanning of every said editing unit, wherein said interleaved data blocks in said editing unit are recorded on consecutive t tracks on said magnetic tape, said interleaved data blocks include said video data blocks and said corresponding sound data blocks, said video data blocks are recorded on said magnetic tape on consecutive (t−p) tracks and said corresponding sound data blocks are recorded on said magnetic tape on consecutive p tracks, t and p being natural numbers, p<t, and said recording means further records said interleaving type data on said magnetic tape as a sub-code data on said t tracks.

A helical scan data recording apparatus, comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks, each block including a predetermined amount of said data from said storing means, said data blocks including video data blocks and corresponding sound data blocks having a Common block size corresponding to said predetermined amount of data, whereby said check code generation means generates said check code data using the same check code system between said video data blocks and said corresponding sound data blocks, generating check code data in accordance with said data, and storing said check code data in said storing means for each of said data block corresponding to said data;
• interleaving means for interleaving a predetermined number of said data blocks with each other using said storing means, said predetermined number of said data blocks providing a portion of an editing unit;
• and
• recording means for recording the interleaved data blocks and said check code data corresponding to the interleaved data blocks on a magnetic tape through helical scanning of every said editing unit, wherein said interleaved data blocks in said editing unit are recorded on consecutive t tracks on said magnetic tape, said interleaved data blocks include said video data blocks and said corresponding sound data blocks, said video data blocks are recorded on said magnetic tape on consecutive (t−p) tracks and said corresponding sound data blocks are recorded on said magnetic tape on consecutive p tracks, t and p being natural numbers, p<t,
• said video data blocks are recorded on consecutive (t−p) tracks to have V sectors on each of said (t−p) tracks, said sound data blocks are recorded on consecutive p tracks to have U sectors on each of said p tracks, each of said V and U sectors corresponds to its respective video or sound data block, said interleaving means interleaves said data blocks with each other with a unit of k sectors, and said V and U are natural numbers, and k is a common divisor of said U and V.

A helical scan data recording apparatus comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks, each block including a predetermined amount of said data from said storing means, generating check code data in accordance with said data, and storing said check code data in said storing means for each of said data blocks corresponding to said data;
• interleaving type data generation means for generating interleaving type data which indicates one of the predetermined interleaving type patterns;
• interleaving means for interleaving a predetermined number of said data blocks with each other using said storing means in accordance with said interleaving type data, said predetermined number of said data blocks providing a portion of an editing unit;
• and
• recording means for recording the interleaved data through helical scanning with a predetermined number of tracks formed for every said editing unit and recording said interleaving type data on said magnetic tape as sub-code data on every said track.

A helical scan data recording apparatus comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks comprising video data blocks and corresponding sound data blocks, each block including a predetermined amount of said data from said storing means, generating check code data in accordance with said data, said check code generation means generates said check code data using the same check code system between said video data blocks and said corresponding sound data blocks, and storing said check code data in said storing means for each of said data blocks corresponding to said data;
• interleaving selection means for selecting one from a plurality of predetermined interleaving patterns in accordance with an editing unit and generating interleaving type data in accordance with the selected interleaving pattern;
• interleaving means for interleaving a predetermined number of said data blocks with each other in accordance with the selected interleaving pattern using said storing means forming interleaved data blocks including said video data blocks and corresponding sound data blocks, having a common block size corresponding to said predetermined amount of data, said predetermined number of said data blocks providing a portion of said editing unit;
• and
• recording means for recording the interleaved data blocks and said check code data corresponding to the interleaved data blocks on consecutive t tracks on a magnetic tape through helical scanning with a predetermined number of tracks formed for every said editing unit, said video data blocks are recorded on said magnetic tape on consecutive (t−p) tracks and said corresponding sound data blocks are recorded on said magnetic tape on consecutive p tracks, t and p being natural numbers, p<t, and recording said interleaving type data on said magnetic tape as sub-code data on every said track.

A helical scan data recording apparatus comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• interleaving means for interleaving said data such that every predetermined number of first data blocks are interleaved, said first data blocks including said data from said storing means;
• error check code data generation means for generating check code data in accordance with each of said first data blocks, storing said check code data in said storing means to provide second data blocks, each including said first data block and said check code data generated in accordance with each said first data block, said predetermined number of second data blocks providing a portion of an editing unit;
• and
• recording means for recording said second data blocks on a magnetic tape through helical scanning, wherein said second data blocks in said editing unit are recorded on consecutive t tracks on said magnetic tape, said second data blocks include video data blocks and corresponding sound data blocks, said video data blocks are recorded on said magnetic tape on consecutive (t−p) tracks and said corresponding sound data blocks are recorded on said magnetic tape on consecutive p tracks, t and p being natural numbers, p<t, and said video data blocks and corresponding sound data blocks have a common block size whereby said check code generation means generates said check code data using the same check code system between said video data blocks and said corresponding sound data blocks.

A helical scan data recording apparatus comprising:

• receiving means for receiving data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks, each block including a predetermined amount of said data from said storing means, generating check code data in accordance with said data, and storing said check code data in said storing means for each of said data blocks corresponding to said data;
• interleaving type data generation means for generating interleaving type data which indicates one of the predetermined interleaving type patterns;
• interleaving means for interleaving a predetermined number of said data blocks with each other using said storing means in accordance with said interleaving type data, said predetermined number of said data blocks providing a portion of a unit;
• and
• recording means for recording the interleaved data blocks and said check code data corresponding to the interleaved data blocks on a main data area of a magnetic tape through helical scanning with a predetermined number of tracks formed for every said unit, and recording said interleaving type data on a sub-code area which is different area from said main data area of said magnetic tape as sub-code data on every said track.

A helical scan data reproducing apparatus for reproducing data including error correction data on a main data area of a magnetic tape and interleaving type data on a sub-code area which is a different area from said main data area of said magnetic tape as sub-code data, said interleaving type data Indicative of Interleaving effected for said data, comprising:

• data reproducing means for reproducing said data from said main data area and interleaving data from said sub-code area;
• storing means for storing said data from said reproducing means;
• selection means for selecting one from a plurality of predetermined de-interleaving formats in accordance with said Interleaving type data reproduced from said sub-code area of said magnetic tape from said data reproducing means;
• de-Interleaving means for de-interleaving said data in accordance with said one of a plurality of de-interleaving formats selected by reproduced Interleaving type data using said storing means;
• error correction means for error-correcting said de-interleaved data using said error correction data;
• and
• outputting means for outputting said error-corrected data.

A digital data reproducing apparatus for reproducing interleaved data blocks on a main data area of a recording medium, and for reproducing interleaving type data on a sub-code area which is different area from said main data area of said recording medium as sub-code data, said interleaving type data indicative of interleaving pattern for said interleaved data comprising data reproducing means for reproducing said interleaved data from said main data area and for reproducing said interleaving type data from said sub-code area;

• storing means for storing said data from said reproducing means;
• selection means for selecting one from a plurality of predetermined de-interleaving formats in accordance with said interleaving type data reproduced from said sub-code area of said recording medium from said data reproducing means;
• de-interleaving means for de-interleaving said interleaved data in accordance with said one of a plurality of de-interleaving formats selected by said reproduced interleaving type data;
• error correction means for error-correcting said de-interleaved data using an error correction data;
• and
• outputting means for outputting said error-corrected data.

A digital data recording apparatus comprising:

• receiving means for receiving digital data;
• storing means for storing said data and check code data;
• error check code generation means for reading said data in data blocks, each block including a predetermined amount of said data from said storing means, generating check code data in accordance with said data, and storing said check code data in said storing means for each of said data blocks corresponding to said data;
• interleaving type data generation means for generating interleaving type data which indicates one of the predetermined interleaving type patterns;
• interleaving means for interleaving a predetermined number of said data blocks with each other in accordance with interleaving type data, said predetermined number of said data blocks providing a portion of a unit;
• and
• recording means for recording the interleaved data blocks on a main data area of recording medium with a predetermined number of tracks formed for every said unit and recording said interleaving type data on a sub-code area which is different from said main data area of said recording medium as sub-code data on every said track.