Coded data generation or conversion – Digital code to digital code converters – Unnecessary data suppression
Patent
1993-11-17
1996-02-13
Williams, Howard L.
Coded data generation or conversion
Digital code to digital code converters
Unnecessary data suppression
395 221, H03M 730
Patent
active
054914817
ABSTRACT:
A compressed data recording and/or reproducing apparatus has a compressed data reproducing system for at least reproducing digital data from one recording medium such as a magneto-optical disc in which digital data is bit-compressed and recorded and a compressed data recording system for at least recording digital data in one other recording medium such as an IC card in which digital data is bit-compressed and recorded. The compressed data recorded in the one recording medium of the reproducing system is reproduced and transmitted to the recording system. The compressed data is also bit-compressed at the same or a lower bit rate and recorded in the other recording medium. For this recording, a processing block of the bit compression is selectively deleted in accordance with a scale factor of the bit, compression.
REFERENCES:
patent: 4916742 (1990-04-01), Kolesnikov et al.
patent: 4989246 (1991-01-01), Wan et al.
patent: 5054073 (1991-10-01), Yazu
EPO Search Report; Patent Abstracts of Japan, vol. 17, No. 128, Mar. 18, 1993 Database WPI, Section Ei, Week 9302; Patent Abstracts of Japan, vol. 17 No. 287, Jun. 2, 1993.
Kananen Ronald P.
Sony Corporation
Williams Howard L.
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