Output circuit and related apparatus and method for...

Details Output circuit and related apparatus and method for... Output circuit and related apparatus and method for...

2004-03-05

2008-07-08

Miller, John W. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000

Reexamination Certificate

active

07398001

ABSTRACT:
An output circuit of a player can detect whether a cable is electrically connected to an output port of the output circuit. The output circuit includes a signal circuit and a decision module for detecting whether a cable is connected by detecting voltage change at the output port. If the decision module determines that a cable is connected, the signal circuit will provide video or audio signals of the player to the output port. If the decision module determines that no cable connected, the signal circuit will provide a predetermined detecting signal with nonzero average power to the output port, such that the decision module can detect whether the output end is connected to a cable again by detecting voltage change of the detecting signal.

REFERENCES:
patent: 5473229 (1995-12-01), Archer et al.
patent: 2000267770 (2000-09-01), None

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