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公开(公告)号：DE3429901A1
公开(公告)日：1985-03-07
申请号：DE3429901
申请日：1984-08-14
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR , CARLSON CURTIS RAYMOND
Abstract: A digital TV system reduces the data rate by transmitting or recording only bytes representing half of the sampled pixels. Steering bits are also transmitted that tell which of the transmitted bytes are the closest match to the untransmitted bytes so the pixels represented by the later can be reconstructed. The steering or control bits are repeated for subsequent omitted bytes unless it no longer indicates a match within a selected tolerance or threshold.
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公开(公告)号：GB2110047A
公开(公告)日：1983-06-08
申请号：GB8231456
申请日：1982-11-03
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR
Abstract: A system is provided for filtering and demodulating digital color mixture signals, wherein the signals are filtered to remove out-of-band noise prior to completion of the demodulation process. Interleaved digital chrominance signal samples are first demodulated by a signal related in frequency to the video subcarrier to obtain interleaved color mixture signal samples of different sampling phases at baseband frequencies. The interleaved color mixture signal samples are applied to a digital filter at a rate which is a multiple of the color subcarrier frequency. The weighting coefficients of the filter are selected to obtain a bandwidth which passes the color mixture signal while removing out of band noise. Since the input signal sequence to the digital filter contains interleaved color mixture signal samples, alternate stages of the filter shift register are tapped, so that the output sequence will comprise filtered and interleaved color mixture signal samples. An output sampling switch accomplishes phase demodulation of the output sequence by selecting samples at a reduced sampling rate in accordance with the Nyquist criterion of the color signals and produces either one or two output sequences of filtered and fully demodulated color mixture signals. Tapped shift register stages of the digital filter may be coupled to two different sets of weighting coefficients and signal combining stages. The filter outputs may thus exhibit unequal bandwidths for filtered color mixture signals, which are commensurate with the desired bandwidths of the filtered signals.
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公开(公告)号：FI823741A0
公开(公告)日：1982-11-02
申请号：FI823741
申请日：1982-11-02
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR
Abstract: A system is provided for filtering and demodulating digital color mixture signals, wherein the signals are filtered to remove out-of-band noise prior to completion of the demodulation process. Interleaved digital chrominance signal samples are first demodulated by a signal related in frequency to the video subcarrier to obtain interleaved color mixture signal samples of different sampling phases at baseband frequencies. The interleaved color mixture signal samples are applied to a digital filter at a rate which is a multiple of the color subcarrier frequency. The weighting coefficients of the filter are selected to obtain a bandwidth which passes the color mixture signal while removing out of band noise. Since the input signal sequence to the digital filter contains interleaved color mixture signal samples, alternate stages of the filter shift register are tapped, so that the output sequence will comprise filtered and interleaved color mixture signal samples. An output sampling switch accomplishes phase demodulation of the output sequence by selecting samples at a reduced sampling rate in accordance with the Nyquist criterion of the color signals and produces either one or two output sequences of filtered and fully demodulated color mixture signals. Tapped shift register stages of the digital filter may be coupled to two different sets of weighting coefficients and signal combining stages. The filter outputs may thus exhibit unequal bandwidths for filtered color mixture signals, which are commensurate with the desired bandwidths of the filtered signals.
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公开(公告)号：DE3150365A1
公开(公告)日：1982-09-16
申请号：DE3150365
申请日：1981-12-18
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR , MARLOWE FRANK JEROME
Abstract: In a transmission channel, such as a tape recorder, errors in code words usually occur in bursts. Further, it is usually possible to detect only some of the erroneous code words. To conceal undetected erroneous code words, concealment starts before, and continues after, a detected erroneous code word. Thus the undetected erroneous code words in an error burst have a high probability of being concealed.
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公开(公告)号：FR2499289A1
公开(公告)日：1982-08-06
申请号：FR8201193
申请日：1982-01-26
Applicant: RCA CORP
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Patent Agency Ranking
公开(公告)号：DE3202365A1
公开(公告)日：1982-08-05
申请号：DE3202365
申请日：1982-01-26
Applicant: RCA CORP
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公开(公告)号：DE3104247A1
公开(公告)日：1981-12-03
申请号：DE3104247
申请日：1981-02-06
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR , DISCHERT ROBERT ADAMS
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公开(公告)号：DE3702333C2
公开(公告)日：1996-07-18
申请号：DE3702333
申请日：1987-01-27
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR
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公开(公告)号：GB2199982B
公开(公告)日：1991-09-11
申请号：GB8700794
申请日：1987-01-14
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR
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公开(公告)号：FR2516333B1
公开(公告)日：1990-03-02
申请号：FR8218707
申请日：1982-11-08
Applicant: RCA CORP
Inventor： REITMEIER GLENN ARTHUR
Abstract: A system is provided for filtering and demodulating digital color mixture signals, wherein the signals are filtered to remove out-of-band noise prior to completion of the demodulation process. Interleaved digital chrominance signal samples are first demodulated by a signal related in frequency to the video subcarrier to obtain interleaved color mixture signal samples of different sampling phases at baseband frequencies. The interleaved color mixture signal samples are applied to a digital filter at a rate which is a multiple of the color subcarrier frequency. The weighting coefficients of the filter are selected to obtain a bandwidth which passes the color mixture signal while removing out of band noise. Since the input signal sequence to the digital filter contains interleaved color mixture signal samples, alternate stages of the filter shift register are tapped, so that the output sequence will comprise filtered and interleaved color mixture signal samples. An output sampling switch accomplishes phase demodulation of the output sequence by selecting samples at a reduced sampling rate in accordance with the Nyquist criterion of the color signals and produces either one or two output sequences of filtered and fully demodulated color mixture signals. Tapped shift register stages of the digital filter may be coupled to two different sets of weighting coefficients and signal combining stages. The filter outputs may thus exhibit unequal bandwidths for filtered color mixture signals, which are commensurate with the desired bandwidths of the filtered signals.
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