Television – Image signal processing circuitry specific to television – Switching
Patent
1994-09-28
1996-03-19
Groody, James J.
Television
Image signal processing circuitry specific to television
Switching
348554, H04N 5268
Patent
active
055006906
ABSTRACT:
A television apparatus includes a switching device for selecting different signal sources. In order to enable the supply of composite signals or "Y-C" signals at will to the input of one and the same circuit of the type having a "Y-C" input (two separate terminals), a filter eliminating the chrominance signal is arranged at the input "Y" and a filter eliminating the luminance signal is arranged at the input "C", whereas in a circuit of the type adapted to utilize a composite input signal, the input thereof is connected to a source for a signal of the type "Y" by means of a bridge comprising two series-arranged resistors, while the junction point of this bridge is connected to a source for a signal of the type "C" by means of a capacitive inductance resonance circuit of the series type which is tuned to the chrominance subcarrier frequency.
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Franzblau Bernard
Groody James J.
Lee Michael H.
U.S. Philips Corporation
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