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公开(公告)号：GB2141002B
公开(公告)日：1986-11-26
申请号：GB8412562
申请日：1984-05-17
Applicant: RCA CORP
Inventor： WILLIS DONALD HENRY , FUHRER JACK SELIG
IPC: H04N1/405 , G06F17/10 , G06T5/00 , G06T9/00 , H03H17/02 , H03M1/04 , H03M1/20 , H03M7/30 , H03M7/36 , H04N9/64 , H04N11/04 , H04N5/14
Abstract: The present invention provides for the generation of digitally dithered digital signals which can have an apparent quantizing resolution unaffected by truncation of the least significant bit. The truncated digital signal is dithered in an ordered fashion by adding thereto a bit developed in response to one condition of the truncated bit and is not dithered in response to another condition thereof. The original digital signal can be reconstructed by combining successive samples of the truncated digital signals. One feature of the present invention provides a truncation of digital signals.
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公开(公告)号：IT1131169B
公开(公告)日：1986-06-18
申请号：IT2196280
申请日：1980-05-09
Applicant: RCA CORP
Inventor： FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
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公开(公告)号：FI69380C
公开(公告)日：1986-01-10
申请号：FI801424
申请日：1980-05-02
Applicant: RCA CORP
Inventor： LAGONI WILLIAM ADAMSON , FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring and enhancing vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network with a prescribed restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, and enhances higher level detail signals through amplification to enhance vertical image definition. A resultant reconstituted luminance component manifests restored low level vertical detail information as well as enhanced higher level vertical detail information, without enhancing unwanted signal components such as noise.
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公开(公告)号：DK148048B
公开(公告)日：1985-02-11
申请号：DK204480
申请日：1980-05-09
Applicant: RCA CORP
Inventor： FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
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公开(公告)号：FR2546698A1
公开(公告)日：1984-11-30
申请号：FR8408150
申请日：1984-05-24
Applicant: RCA CORP
Inventor： WILLIS DONALD HENRY , FUHRER JACK SELIG
IPC: H04N1/405 , G06F17/10 , G06T5/00 , G06T9/00 , H03H17/02 , H03M1/04 , H03M1/20 , H03M7/30 , H03M7/36 , H04N9/64 , H04N11/04 , H04N5/14 , H04N7/13
Abstract: The present invention provides for the generation of digitally dithered digital signals which can have an apparent quantizing resolution unaffected by truncation of the least significant bit. The truncated digital signal is dithered in an ordered fashion by adding thereto a bit developed in response to one condition of the truncated bit and is not dithered in response to another condition thereof. The original digital signal can be reconstructed by combining successive samples of the truncated digital signals. One feature of the present invention provides a truncation of digital signals.
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Patent Agency Ranking
公开(公告)号：AU536333B2
公开(公告)日：1984-05-03
申请号：AU5808880
申请日：1980-05-05
Applicant: RCA CORP
Inventor： LAGONI WILLIAM ADAMSON , FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring and enhancing vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network with a prescribed restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, and enhances higher level detail signals through amplification to enhance vertical image definition. A resultant reconstituted luminance component manifests restored low level vertical detail information as well as enhanced higher level vertical detail information, without enhancing unwanted signal components such as noise.
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公开(公告)号：AU536332B2
公开(公告)日：1984-05-03
申请号：AU5808780
申请日：1980-05-05
Applicant: RCA CORP
Inventor： FUHRER JACK SELIG
IPC: H04N9/77 , B27G19/10 , H03G11/00 , H04N1/40 , H04N9/64 , H04N9/78 , H04N5/20 , H04N9/537 , H04N9/539
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
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公开(公告)号：FR2456444A1
公开(公告)日：1980-12-05
申请号：FR8010435
申请日：1980-05-09
Applicant: RCA CORP
Inventor： LAGONI WILLIAM ADAMSON , FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring and enhancing vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network with a prescribed restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, and enhances higher level detail signals through amplification to enhance vertical image definition. A resultant reconstituted luminance component manifests restored low level vertical detail information as well as enhanced higher level vertical detail information, without enhancing unwanted signal components such as noise.
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公开(公告)号：DE3017931A1
公开(公告)日：1980-11-20
申请号：DE3017931
申请日：1980-05-09
Applicant: RCA CORP
Inventor： FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
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公开(公告)号：FI801422A
公开(公告)日：1980-11-12
申请号：FI801422
申请日：1980-05-02
Applicant: RCA CORP
Inventor： FUHRER JACK SELIG
Abstract: In a color television receiver including a comb filter for separating luminance and chrominance components of a color television signal, a network is included for selectively restoring, enhancing and paring vertical image detail to preserve and enhance vertical resolution in the luminance content of a displayed image. The comb filter provides a combed luminance signal output from which vertical detail signal information has been unavoidably deleted, and a combed chrominance signal output including signal frequency components representative of the deleted detail signal, which are selectively extracted from the combed chrominance signal. Low level detail signals are restored to the combed luminance signal via a first signal processing network which exhibits a prescribed signal restoration gain. The detail signal is also combined with the combed luminance signal via a second signal processing network which cores (removes) low level detail signals including noise, enhances moderate level detail signals through amplification to enhance vertical image definition, and pares (amplitude reduces) high level detail signals. A resultant reconstituted luminance component manifests restored low level vertical detail information, enhanced moderate level vertical detail information without enhancing unwanted signal components such as noise, and pared high level detail signals to avoid excessive contrast.
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