Digital coding process for recording sound channels with a telev

Details Digital coding process for recording sound channels with a telev Digital coding process for recording sound channels with a telev

1979-10-25

1982-02-02

Malzahn, David H.

Excavating

340347DD, 375 26, G06F 1114

Patent

active

043143695

ABSTRACT:
In an audiovisual signals diffusion apparatus, a digital coding process for protecting coded digital sound signals alternately recorded with video signals against alterations or deteriorations encountered during the transcription process onto a recording carrier or support, comprising the steps of selectively protecting signals representing low analog levels against large erroneous variations, transmitting several times the thus protected signals and garbling the different bits of successively transmitted digital signals, said process being compatible with the multiplexed recording of several sound channels.

REFERENCES:
patent: 3678389 (1972-07-01), Heers et al.
patent: 4047151 (1977-09-01), Rydbeck et al.
patent: 4132975 (1979-01-01), Koike
"Journal of the Audio Engineering Society"; vol. 26, No. 7/8;Jul/Aug. 1978; Willcocks: Some Notes on Digital Audio Topics, pp. 549-553.
"Wireless-World"; vol. 81, No. 1474, Jun. 1975; Dwyer: Digital Techniques in Recording and Broadcasting, pp. 248-253.
"IBM Technical Disclosure Bulletin", vol. 17, No. 5, Oct. 1974, Maddens et al: Digital-to-analog converter for low-level PCM-signals, pp. 1383-1384.
"Electronique Industrielle"; No. 116, Sep. 1968; Chaskilevitch: Conversion numerique-analogique Par circui integre, pp. 579-585.
"Radio Mentor Electronic"; vol. 39, No. 1, Jan. 1973; PCM Fur Bessere Schallplatten, pp. 030-031.

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