Digital signal recording method

Abstract

Abstract Data word of 8 bits is code-transformed into a code word of 12 bits, for an 8/12 code having such a performance suitable for high density recording as d = 2 and k = 10, two kinds of synchronous pattern which are never appeared in a data can be respectively provided for the video and audio uses while keeping the limitation to d and k. Accordingly, decision error between the video data and audio data resulting from reproducing error can be remarkably decreased, leading to an improvement in error probability and yet it is realizable with an extremely practical circuit structure. In addition, a pilot signal can be generated digitally with an extremely simple circuit, being suitable for home-use DVTR or the like necessary to use a stable pilot signal. As a result, the error rate of a super high density recording apparatus such as, for example, DVTR can be remarkably decreased, thus its practical effects being very large.

Inventors

• 👤 Akira Iketani

Bibliographic Details