Banded and interleaved video disc format with duplicate informat

Details Banded and interleaved video disc format with duplicate informat Banded and interleaved video disc format with duplicate informat

1981-12-04

1989-01-03

Cardillo, Raymond F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

369 32, 369 54, 369275, 360 15, H04N 585, G11B 7007

Patent

active

047960981

ABSTRACT:
An information carrier having a surface upon which the information is stored. The surface having a first series of lineal regions and at least a second series of lineal regions with the second series being spaced from the first series of lineal regions. The first and second series of lineal regions are used to provide duplication of the stored information at two locations on the carrier so that even if a defect occurs in one region the information can still be read from another region. When stored on a disc, the different series of lineal regions can be arranged in a banded structure, whereby each series is separated from the next by a prescribed radial spacing. Alternatively the separate series of lineal regions can be arranged in interleaved fashion progressing radially on the disc. In either the banded or interleaved embodiments, the information contained in each series may be comprised of a plurality of progressing concentric circular segments or, alternatively, a plurality of substantially circular segments arranged along a spiral path on the disc.

REFERENCES:
patent: 3761903 (1973-09-01), Bird, Jr. et al.
patent: 3883891 (1975-05-01), Thompson et al.
patent: 3931457 (1976-01-01), Mes
patent: 4138741 (1979-02-01), Hedlund et al.
patent: 4145758 (1979-03-01), Drexler et al.
Patents Abstracts of Japan, vol. 4, No. 134(P-28) [616], Sep. 19, 1980.

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