Method and apparatus for recording a digital information signal

An apparatus for recording a digital information signal in which a digital information signal is recorded on a plurality of parallel tracks which are formed in the longitudinal direction of a recording medium, comprising:

• means for separating a time series of said digital information signal into a plurality of even-numbered words and a plurality of odd-numbered words;
• means for specifying in a manner such that said plurality of even-numbered words and said plurality of odd-numbered words are respectively recorded on a first track group and a second track group which are separated with respect to the widthwise direction of said recording medium;
• and means for performing an error correction coding process with regard to each of said plurality of even-numbered words and said plurality of odd-numbered words.

A method of recording a digital information signal in which a digital information signal is recorded on n parallel tracks which are formed in the longitudinal direction of a recording medium, comprising:

• an encoding step of performing error correction coding processes with respect to an input digital information signal and forming data to be distributed onto 2n tracks;
• and a time-shared multiplexing step of receiving outputs in said encoding step and converting said outputs to data to be recorded on said n tracks.

An apparatus for recording a digital information signal in which a digital information signal is recorded on n parallel tracks which are formed in the longitudinal direction of a recording medium, comprising:

• encoding means for performing error correction coding processes with respect to an input digital information signal and forming data to be distributed onto 2n tracks;
• and time-shared multiplexing means for receiving outputs of said encoding means and converting said outputs to data to be recorded on said n tracks.

A method of recording a digital information signal in which one word of a digital information signal is divided into a plurality of symbols and is recorded on a recording medium in a plurality of parallel, longitudinal tracks, comprising the steps of:

• performing an error correction coding process using said symbol as a unit;
• and specifying said symbols such that said plurality of symbols constituting one word of said digital information signal are recorded at positions having a strong error correlation in a widthwise direction of the record medium and in a longitudinal direction of the record medium.

An apparatus for recording a digital information signal in which one word of a digital information signal is divided into a plurality of symbols and is recorded on a recording medium in a plurality of parallel, longitudinal tracks, comprising:

• means for performing an error correction coding process using said symbols as a unit;
• and means for specifying said symbols such that said plurality of symbols constituting one word of said digital information signal are recorded at positions having a strong error correlation in a widthwise direction on said record medium and in a longitudinal direction on said record medium.