Title:
SUBSCRIPTION TELEVISION
Document Type and Number:
Japanese Patent JPS5717288
Kind Code:
A
Abstract:
A coding and decoding system for video signals includes means at the transmitter for applying sine wave amplitude modulation of approximate line frequency to the aural carrier to prevent the chrominance subcarrier from providing receiver synchronization.
Inventors:
PIITAA DEN TOUUNDAA
PIITAA JIEI FUONDOSE
PIITAA JIEI FUONDOSE
Application Number:
JP7286581A
Publication Date:
January 28, 1982
Filing Date:
May 14, 1981
Export Citation:
Assignee:
OAK INDUSTRIES INC
International Classes:
H04N7/171; (IPC1-7): H04N7/16
Domestic Patent References:
| JPS5037972A | 1975-04-09 | |||
| JPS5357708A | 1978-05-25 |