Video muting apparatus

Details Video muting apparatus Video muting apparatus

1993-06-10

1995-01-17

Groody, James J.

Television

Image signal processing circuitry specific to television

Picture blanking

348637, H04N 324

Patent

active

053829816

ABSTRACT:
The video muting apparatus is provided with a controlling apparatus which calculates the video muting time TM from the correlation between the power feeding time T1 counted by the first counter and the power feed stopping time T2 counted by the second counter and controls the operation of the switch on the basis of the calculated video muting TM. The switch will operate to be opened on the basis of the controlling signal from the controlling apparatus during the period from the starting time point when the power feed by the power supply circuit is started until the video muting time TM elapses and will operate to be closed on the basis of the controlling signal from the controlling apparatus immediately after the the video muting time TM elapses.

REFERENCES:
patent: 4107614 (1978-08-01), Sugai
patent: 4280139 (1981-07-01), Mogi et al.
patent: 4330792 (1982-06-01), Naimpally

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