Method of and device for recording information

Details Method of and device for recording information Method of and device for recording information

2006-09-26

2006-09-26

Groody, James J. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C386S349000, C369S047140

Reexamination Certificate

active

07113691

ABSTRACT:
A method of and an apparatus for writing data on and reading data from a recording medium such as an optical disc, a magnetic disc and, particularly, a tape are described. When a block of the medium is defective, the data to be written in said block is stored in an auxiliary memory. Subsequently, all the data from the auxiliary memory is copied to a predetermined spare area of the medium. Conversely, when the medium is read, data is first copied from the spare area of the medium to the auxiliary memory. If a block then appears to be defective, the correct information is read from the auxiliary memory.Thus, it is possible to write and read a real-time audio and/or video signal in a reliable manner without the possible presence of any defective blocks affecting the data transfer rate.

REFERENCES:
patent: 4498146 (1985-02-01), Martinez
patent: 4849956 (1989-07-01), Aizawa
patent: 6577812 (2003-06-01), Kikuchi et al.
patent: 6654543 (2003-11-01), Ando et al.

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