Information carrier, device for encoding, method for...

Details Information carrier, device for encoding, method for... Information carrier, device for encoding, method for...

G - Physics

11

B

G11B 20/00 (2006.01) G11B 20/10 (2006.01) G11B 20/14 (2006.01) G11B 20/18 (2006.01) H03M 13/31 (2006.01)

Patent

CA 2333174

The invention relates to an information carrier comprising runlength limited marks in a track. The runlengths of the marks represent main channel bits and variations of a further parameter of the marks representing secondary channel bits. Not all marks have said variations, only marks of at least a predetermined runlength have said variations. The invention further relates to a device for encoding, a method for encoding, a device for encoding and a method for decoding.

Cette invention a trait à un support d'informations comprenant des marques limitées en longueur de plage dans une piste. Les longueurs de plage des marques représentent des bits d'un canal principal tandis que des variations d'un autre paramètre des marques représentent des bits d'un canal secondaire. Toutes les marques ne comportent pas ces variations, seules les marques d'au moins une longueur de plage déterminée les possédant. Cette invention porte, en outre, sur des dispositifs et des techniques de codage et de décodage.

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