Audio/video/control remote switching device

Details Audio/video/control remote switching device Audio/video/control remote switching device

1996-04-12

1998-11-17

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

Switching

34082525, 360 61, 386 65, H04N 5268

Patent

active

058383930

ABSTRACT:
An audio/video/control switching apparatus comprised of a plurality of switching subsystems. Each of the switching subsystems allows an operator to select an input signal from among a first plurality of inputs, to select an output signal from a second plurality of outputs, and to couple the selected input signal to the selected output signal. In the preferred embodiment, each of the switching subsystems handles a different one of a plurality of signal types, such as composite video signals, S-video signals, audio signals, time code signals, and control signals. A control panel is coupled to the switching subsystems, so that the operator can control the selection of the input and output signals. The apparatus also includes a circuit that enables the switching subsystems only when the selected input signal is not coupled to an identical device as the selected output signal.

REFERENCES:
patent: 4675757 (1987-06-01), Block
patent: 4855730 (1989-08-01), Venners et al.
patent: 5054022 (1991-10-01), Van Steenbrugge
patent: 5255097 (1993-10-01), Spiero et al.
patent: 5327296 (1994-07-01), Nagasawa
patent: 5414417 (1995-05-01), Heo

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