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EP0455131A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Television receiver with auxiliary input connector for video signals of a separated Y-C-format

Assignee: Technicolor USA Inc
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Filing: 1991-04-25
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Granted: —
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Expires: 2011-04-25
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Abstract

Abstract A color television receiver includes a comb filter (10) having luminance and chrominance outputs coupled to respective inputs of a display processor (12). A signal source (22,30) provides composite and non-composite color video signals for display. A switching circuit (40, 50, 60) having a first operating mode for coupling the composite video signal to an input of the comb filter for enabling display thereof by said display processor. The switching circuit has a second operating mode for coupling the luminance component of the non-composite video signal to the input of the comb filter and for concurrently coupling the chrominance component of the non-composite video signal to the chrominance output of the comb filter for facilitating display of the non-composite video signal by said display processor.

Inventors

  • 👤 Gene Karl Sendelweck

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 13:40
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/641; H04N9/77

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 139 words
A color television receiver, comprising: a comb filter (10) having luminance (Y) and chrominance (C) output coupled to respective inputs of a display processor (12); a signal source (22,30) for providing a composite video input signal having combined luminance and chrominance components and for providing a non-composite video input signal having separated luminance and chrominance components; characterized by: circuit means (40,50,60) having a first operating mode for coupling said composite video signal to said input of said comb filter for display by said display processor and having a second operating mode for coupling said luminance component of said non-composite video signal to said input of said comb filter and for concurrently coupling said chrominance component of said non-composite video signal to said chrominance output of said comb filter for display of said non-composite video signal by said display processor.
Claim 2
Dependent Claim 64 words
A color television receiver as recited in Claim 1 characterized in that said circuit means comprises a switch (40) having a first input for receiving said composite video input signal, having a second input for receiving said luminance component of said non-composite video input signal and having an output coupled via an amplifier (50) to said input terminal (11) of said comb filter (10).
Claim 3
Dependent Claim 72 words
A color television receiver as recited in Claim 1 characterized in that said circuit means comprises first (40) and second (60) switches, said first switch (40) for selectively coupling said composite video signal and said luminance component of said non-composite video signal to said input of said comb filter, said second switch (60) for selectively coupling said chrominance component of said non-composite video signal to said chrominance output of said comb filter.
Claim 4
Dependent Claim 20 words
A color television receiver as recited in Claim 3 characterized in that each switch includes a respective output amplifier (50,60).

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