Patent US1623587A successfully refreshed from Google Patents.
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US5113439A
Expired / Lapsed
US
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Catv terminal and video apparatus having a noise eliminating circuit
Assignee: Pioneer Corp
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Filing: 1990-03-05
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Granted: 1992-05-12
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Expires: 2010-03-05
Abstract
Abstract In a CATV terminal or a video apparatus such as a TV receiver, noises superimposed on a DC part of a horizontal synchronizing signal of a video signal are eliminated by integrating the DC part or replacing the DC part with an appropriate constant voltage. Noises superimposed on a back porch portion of the video signal are eliminated in the similar manner by subjecting a luminance signal which has been separated from the video signal to the noise eliminating operation.
Inventors
- 👤 Takashi Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:20
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/10; H04N7/102; H04N5/00; H04N5/14; H04N5/21; H04N5/213
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
69 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the baseband video signal by integrating the DC part.
Claim 2
Dependent Claim
69 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the baseband video signal by integrating the DC part.
Claim 3
Dependent Claim
79 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband signal into a color signal and a luminance signal; and noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 4
Dependent Claim
79 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband signal into a color signal and a luminance signal; and noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 5
Dependent Claim
57 words
The CATV terminal apparatus according to claim 1, further comprising: separating means for separating a baseband video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 6
Dependent Claim
109 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 7
Dependent Claim
109 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 8
Dependent Claim
85 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 9
Dependent Claim
85 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 10
Dependent Claim
127 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the baseband video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a baseband video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch with a second predetermined constant voltage.
Claim 11
Dependent Claim
127 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the baseband video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a baseband video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch with a second predetermined constant voltage.
Claim 12
Dependent Claim
121 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal of the luminance signal portion by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 13
Dependent Claim
121 words
In a CATV terminal apparatus detecting a radio frequency video signal transmitted through a transmission line, converting the detected signal into a baseband video signal, and modulating the converted signal into an output radio frequency video signal, the improvement comprising: separating means for separating the baseband video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal of the luminance signal portion by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 14
Dependent Claim
48 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of a descrambled video signal by integrating the DC part.
Claim 15
Dependent Claim
48 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of a descrambled video signal by integrating the DC part.
Claim 16
Dependent Claim
59 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; and noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 17
Dependent Claim
59 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; and noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 18
Dependent Claim
56 words
The CATV terminal apparatus according to claim 8, further comprising: separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 19
Dependent Claim
86 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 20
Dependent Claim
86 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 21
Dependent Claim
65 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 22
Dependent Claim
65 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 23
Dependent Claim
106 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of a descrambled video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 24
Dependent Claim
106 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of a descrambled video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 25
Dependent Claim
99 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 26
Dependent Claim
99 words
In a CATV terminal apparatus receiving a scrambled video signal and descrambling the received video signal, the improvement comprising: separating means for separating a descrambled video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 27
Dependent Claim
49 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the video signal by integrating the DC part.
Claim 28
Dependent Claim
49 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the video signal by integrating the DC part.
Claim 29
Dependent Claim
62 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating a the video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 30
Dependent Claim
62 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating a the video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 31
Dependent Claim
55 words
The video apparatus according to claim 15, further comprising: separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 32
Dependent Claim
89 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 33
Dependent Claim
89 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the luminance signal by integrating the DC part; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by integrating the back porch portion.
Claim 34
Dependent Claim
66 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 35
Dependent Claim
66 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; and noise eliminating process means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a predetermined constant voltage.
Claim 36
Dependent Claim
106 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 37
Dependent Claim
106 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: first noise eliminating means for eliminating a noise superimposed on a DC part of a horizontal synchronizing signal portion of the video signal by replacing the DC part with a first predetermined constant voltage; separating means for separating a video signal from the first noise eliminating means into a color signal and a luminance signal; and second noise eliminating means for eliminating a noise superimposed on a back porch of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 38
Dependent Claim
100 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a synchronizing signal portion of the luminance signal by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
Claim 39
Dependent Claim
100 words
In a video apparatus receiving a video signal and reproducing a signal corresponding to the received video signal, the improvement comprising: separating means for separating the video signal into a color signal and a luminance signal; first noise eliminating means for eliminating a noise superimposed on a DC part of a synchronizing signal portion of the luminance signal by replacing the DC part with a first predetermined constant voltage; and second noise eliminating means for eliminating a noise superimposed on a back porch portion of the luminance signal by replacing the back porch portion with a second predetermined constant voltage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |