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公开(公告)号：KR820000873B1
公开(公告)日：1982-05-17
申请号：KR770001830
申请日：1977-08-08
Applicant: RCA CORP
Inventor： RUTISHAUSE E , CARMT P , SCHIESS J
IPC: H04N9/02
Abstract: The color video information signal source (1a, 1b) including the modulation circuit network (3a, 3b, 3c, 4a) of providing modulated negative carrier wave signal of the first phase (R-Y) and the second phase (B-Y), the first output terminal (Y) providing luminance component of prescribed frequency band width, the signal combination circuit (5C) connected to the first and the second output terminal, the signal record (10) connected to the output of the frequency modulator are included in the video disc systems. The characteristic of the systems is the burst-pulse generating circuit (26).
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公开(公告)号：KR820000874B1
公开(公告)日：1982-05-19
申请号：KR800004702
申请日：1980-12-11
Applicant: RCA CORP
Inventor： SCHIESS J , CARNT P , RUTISHAUSE E
IPC: H04N9/02
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公开(公告)号：KR800001338B1
公开(公告)日：1980-10-28
申请号：KR760003010
申请日：1976-12-06
Applicant: RCA CORP
IPC: H03L5/02
Abstract: A biasing circuit biases the second of two input terminals of a differential amplifier at a first reference level. A bilevel voltage generated at an output terminal of the differential amplifier shifts levels when the sawtooth voltage equals the first reference voltage level. A second biasing circuit coupled to the first input terminal biases the first input terminal at a second reference voltage level differing from the 1st reference level by an offset voltage. The second reference level is selected to equalize the duration of each of the bilevel voltages.
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公开(公告)号：SE8004551L
公开(公告)日：1980-06-19
申请号：SE8004551
申请日：1980-06-19
Applicant: RCA CORP
Inventor： CARNT P S , RUTISHAUSER E A , SCHIESS J
Abstract: Color encoding format for a color picture information record, and recording apparatus therefor, are disclosed for recording of discs for use with both (1) disc players designed to provide PAL-type outputs for driving PAL-type color television receivers, and (2) disc players designed to provide SECAM-type outputs for driving SECAM-type color television receivers. In players, up-conversion of recovered composite signal precedes comb filtering to separate luminance and chrominance components. Decoding of up-converted chrominance component, to obtain baseband color-difference signal information is followed by remodulation of a carrier pursuant to a desired output format. Comb filter arrangements of U.S. Pat. No. 3,969,757 are used when up-conversion shifts color subcarrier to a frequency in vicinity of PAL subcarrier frequency, but bearing odd integral multiple relationship to half the line frequency. Differing comb filter arrangements are employed when up-conversion shifts color subcarrier to PAL subcarrier frequency. Demodulation/remodulation arrangement involving the separate detection and remodulation use of two color-difference signals, as well as system requiring detection and remodulation use of only one color-difference signal, are disclosed.
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Patent Agency Ranking
公开(公告)号：BR7705236A
公开(公告)日：1978-06-06
申请号：BR7705236
申请日：1977-08-08
Applicant: RCA CORP
Inventor： RUTISHAUSER E , CARNT P , SCHIESS J
Abstract: Color encoding format for a color picture information record, and recording apparatus therefor, are disclosed for recording of discs for use with both (1) disc players designed to provide PAL-type outputs for driving PAL-type color television receivers, and (2) disc players designed to provide SECAM-type outputs for driving SECAM-type color television receivers. In players, up-conversion of recovered composite signal precedes comb filtering to separate luminance and chrominance components. Decoding of up-converted chrominance component, to obtain baseband color-difference signal information is followed by remodulation of a carrier pursuant to a desired output format. Comb filter arrangements of U.S. Pat. No. 3,969,757 are used when up-conversion shifts color subcarrier to a frequency in vicinity of PAL subcarrier frequency, but bearing odd integral multiple relationship to half the line frequency. Differing comb filter arrangements are employed when up-conversion shifts color subcarrier to PAL subcarrier frequency. Demodulation/remodulation arrangement involving the separate detection and remodulation use of two color-difference signals, as well as system requiring detection and remodulation use of only one color-difference signal, are disclosed.
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公开(公告)号：HK26081A
公开(公告)日：1981-06-26
申请号：HK26081
申请日：1981-06-18
Applicant: RCA CORP
Inventor： RUTISHAUSER E A , CARNT P S , SCHIESS J
Abstract: Color encoding format for a color picture information record, and recording apparatus therefor, are disclosed for recording of discs for use with both (1) disc players designed to provide PAL-type outputs for driving PAL-type color television receivers, and (2) disc players designed to provide SECAM-type outputs for driving SECAM-type color television receivers. In players, up-conversion of recovered composite signal precedes comb filtering to separate luminance and chrominance components. Decoding of up-converted chrominance component, to obtain baseband color-difference signal information is followed by remodulation of a carrier pursuant to a desired output format. Comb filter arrangements of U.S. Pat. No. 3,969,757 are used when up-conversion shifts color subcarrier to a frequency in vicinity of PAL subcarrier frequency, but bearing odd integral multiple relationship to half the line frequency. Differing comb filter arrangements are employed when up-conversion shifts color subcarrier to PAL subcarrier frequency. Demodulation/remodulation arrangement involving the separate detection and remodulation use of two color-difference signals, as well as system requiring detection and remodulation use of only one color-difference signal, are disclosed.
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