Video delta modulation encoder

Details Video delta modulation encoder Video delta modulation encoder

1989-10-13

1991-01-08

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341168, H03M 302

Patent

active

049839721

ABSTRACT:
In a continuously variable slope delta modulation encoder or decoder, the slope of a reconstructed signal is varied by selecting the charging voltage across an integrating capacitor. For an NTSC video signal, the charging voltage may be selected by a shift register connected to a voltage divider supplying the integrating capacitor.

REFERENCES:
patent: 3878465 (1975-04-01), Stephenne et al.
patent: 3925731 (1975-12-01), Brianard et al.
patent: 4042921 (1977-08-01), Smith
patent: 4301446 (1981-11-01), Petit
patent: 4462106 (1984-07-01), De Freitas et al.
Fink, Donald and Christiansen, Donald, Editors; "Delta Modulation" (DM), ctronics Engineers Handbook, Third Edition 1989 with material from Second Edition 1982, McGraw-Hill, N.Y., pp. 14-39 through 14-43.
Jones, Don; "Delta Modulation for Voice Transmission", Harris Analog Product Data Book, 1986, App. note 607, pp. 10-227 through 10-230.

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