H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/44 (2006.01) G01R 31/28 (2006.01) G01R 31/316 (2006.01) H04N 17/04 (2006.01)
Patent
CA 2157084
The present invention discloses a protective device comprising a plurality of detection circuits to detect various malfunctioning of a television receiver according to the kinds thereof identified at the moment when the malfunction takes place and to respond accordingly by classifying the kinds of the malfunctioning into two groups, one group requiring an immediate corrective action and the other requiring a corrective action after an observation of the malfunctioning for a certain period. thereby performing a proper and excellent protecting function without fail. The present invention relates to a protective device for a television receiver comprising (1) a plurality of detection means to detect various malfunctioning of the television receiver and output a plurality of detection signals with the voltage values thereof differing from one another, (2) a composition means to produce a composite signal by combining the foregoing plurality of the detection signals, and (3) a control means to control the time elapsed before the power supply is placed in a dormant state according to the voltage value of the foregoing composite detection signal.
Fetherstonhaugh & Co.
Matsushita Electric Industrial Co. Ltd.
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