Method for manufacturing a record carrier as well as such a...

Details Method for manufacturing a record carrier as well as such a... Method for manufacturing a record carrier as well as such a...

2006-04-04

2006-04-04

Wellington, A. L. (Department: 2652)

Dynamic information storage or retrieval

Binary pulse train information signal

Format arrangement processing for auxiliary information

C369S053210

Reexamination Certificate

active

07023785

ABSTRACT:
A record carrier, and method for manufacturing such record carrier, which can be copies with the aid of a copying apparatus, while the copied record carrier is unreadable. During copying with the aid of the copying apparatus, merge bits are selected such that consecutive channel bits or a first type, the type “1”, are separated by at least Ia and at most Ib consecutive and continuous bits of the second type, the type “0”, and vice versa. The original record carrier, at least over a number of neighboring blocks of channel bits, is provided with specific blocks of merge bits, while consecutive channel bits of one type are separated by Ic or Id consecutive bits of the other type, with Ic<Ia and Id>Ib.

REFERENCES:
patent: 6005839 (1999-12-01), Sako et al.
patent: 6278386 (2001-08-01), Hogan
patent: 6452885 (2002-09-01), Yeo
patent: 6542452 (2003-04-01), Wu et al.
patent: 0 918 326 (1999-05-01), None

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