초록 ▼

In apparatus for recording and/or reproducing digital data, digital data such as video data is encoded with error correction codes including outer codes and inner codes so that respective predetermined numbers of symbols form respective blocks to be added with synchronizing data and so on, then reco

In apparatus for recording and/or reproducing digital data, digital data such as video data is encoded with error correction codes including outer codes and inner codes so that respective predetermined numbers of symbols form respective blocks to be added with synchronizing data and so on, then recorded with rotary heads on slant tracks of a tape medium such as a magnetic tape. The redundancy symbols of the outer error correction code followed by the information data and inner error correction code are recorded at the beginning of each track, so that even if the data reproduced from the beginning portion of the tape contains error, the information data is not much influenced by that error.

대표청구항 ▼

A method of recording digital data comprising the steps of: receiving a series of digital data; dividing said series of digital data into a plurality of segments each including a first predetermined number of data symbols; alternately distributing the data symbols of each of said segments into two r

A method of recording digital data comprising the steps of: receiving a series of digital data; dividing said series of digital data into a plurality of segments each including a first predetermined number of data symbols; alternately distributing the data symbols of each of said segments into two respective sectors; shuffling the data symbols in each sector according to a predetermined pattern; generating an outer error correction code block including a first predetermined number of redundancy symbols for each of said sectors; generating an inner error correction code block including a second predetermined number of redundancy symbols for each of said sectors; and recording said series of digital data with said redundancy symbols of said outer error correction code block and said inner error correction code block on slant tracks of a tape recording medium, said redundancy symbols of said outer error correction code block being recorded first, at the beginning of each of the slant tracks, and being followed by said data symbols and said redundancy symbols of said inner error correction code block on each of the slant tracks, whereby errors are more likely to affect said redundancy symbols of said outer error correction code block than other portions of said digital data and said other portions of said digital data have a reduced error rate.