Patent US5016100A successfully refreshed from Google Patents.
US5016100A
Expired / Lapsed
US
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Transmission of a video signal using adaptive delta modulation
Assignee: Zenith Electronics LLC
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Filing: 1989-12-20
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Granted: 1991-05-14
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Expires: 2009-12-20
Abstract
Abstract A method of transmitting a video signal includes separating one or more parts of the video signal into a high frequency component and a low frequency component, encoding the low frequency component using an adaptive delta modulation process and transmitting the encoded low frequency components during non-active intervals of the high frequency component. In one embodiment, the high frequency component is encoded using an entropy code. A receiver is provided for reconstructing a video signal in response to the received encoded signals.
Inventors
- 👤 Richard W. Citta
- 👤 Dennis M. Mutzabaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:19
CPC Classifications
H; H04; H04N; H04N19/00; H04N7/00; H04N7/08; H04N7/087; H04N19/30
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
75 words
A method of processing and transmitting a video signal comprising: separating the video signal into a low frequency component and a high frequency component; encoding the low frequency component using a predetermined data compression method for developing a digital bit stream representing the low frequency component; and transmitting both the high frequency component signal and the digital bit stream, the digital bit stream being transmitted during the vertical blanking interval of the high frequency component.
Claim 2
Independent Claim
75 words
A method of processing and transmitting a video signal comprising: separating the video signal into a low frequency component and a high frequency component; encoding the low frequency component using a predetermined data compression method for developing a digital bit stream representing the low frequency component; and transmitting both the high frequency component signal and the digital bit stream, the digital bit stream being transmitted during the vertical blanking interval of the high frequency component.
Claim 3
Dependent Claim
17 words
The method according to claim 1 including digitally encoding the high frequency component using an entropy code.
Claim 4
Independent Claim
86 words
A method of processing and transmitting a video signal comprising: separating a low frequency component from the video signal; encoding the low frequency component using a predetermined data compression method for developing a first digital bit stream representing the low frequency component; subtracting the low frequency component from the video signal to derive a high frequency component; and transmitting both the high frequency component and the first digital bit stream, the digital bit stream being transmitted during the vertical blanking interval of the high frequency component.
Claim 5
Independent Claim
86 words
A method of processing and transmitting a video signal comprising: separating a low frequency component from the video signal; encoding the low frequency component using a predetermined data compression method for developing a first digital bit stream representing the low frequency component; subtracting the low frequency component from the video signal to derive a high frequency component; and transmitting both the high frequency component and the first digital bit stream, the digital bit stream being transmitted during the vertical blanking interval of the high frequency component.
Claim 6
Dependent Claim
29 words
The method according to claim 3 including: entropy coding the high frequency component to develop a second digital bit stream; and transmitting the first and second digital bit streams.
Claim 7
Independent Claim
107 words
A method of processing and transmitting a video signal comprising: converting the video signal into a digital video signal; separating a low frequency component from the digital video signal; encoding the low frequency component for developing first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component; recovering a modified low frequency component from the first and second digital bit streams; subtracting the modified low frequency component from the digital video signal for providing a high frequency component; and transmitting the first and second digital bit streams in non-active intervals of the high frequency component.
Claim 8
Independent Claim
107 words
A method of processing and transmitting a video signal comprising: converting the video signal into a digital video signal; separating a low frequency component from the digital video signal; encoding the low frequency component for developing first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component; recovering a modified low frequency component from the first and second digital bit streams; subtracting the modified low frequency component from the digital video signal for providing a high frequency component; and transmitting the first and second digital bit streams in non-active intervals of the high frequency component.
Claim 9
Dependent Claim
20 words
The method according to claim 5 including converting the high frequency component to an analog signal before it is transmitted.
Claim 10
Dependent Claim
26 words
The method according to claim 5 including entropy coding the high frequency component for developing a third digital bit stream and transmitting the third bit stream.
Claim 11
Dependent Claim
139 words
The method according to claim 5 wherein said recovering step comprises: incrementing a slope count in response to the second bit stream representing an increase in the rate of change of the low frequency component; decrementing the slope count in response to the second bit stream representing a decrease in the rate of change of the low frequency component; increasing an amplitude count by a step size determined by the value of the slope count in response to the first bit stream representing an increase in the amplitude of the low frequency component; decreasing the amplitude count by a step size determined by the value of the slope count in response to the first bit stream representing a decrease in the amplitude of the low frequency component; and interpolating the amplitude count to provide the modified low frequency component.
Claim 12
Independent Claim
108 words
A method of receiving and processing a video signal comprising: receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component and occurring during non-active intervals of the high frequency component; separating the first and second digital bit streams from the high frequency component; decoding the first and second digital bit streams to generate a modified low frequency component; and combining the high frequency component with the modified low frequency component to generate a recovered video signal.
Claim 13
Independent Claim
108 words
A method of receiving and processing a video signal comprising: receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component and occurring during non-active intervals of the high frequency component; separating the first and second digital bit streams from the high frequency component; decoding the first and second digital bit streams to generate a modified low frequency component; and combining the high frequency component with the modified low frequency component to generate a recovered video signal.
Claim 14
Dependent Claim
35 words
The method according to claim 9 wherein the received high frequency component is digitally encoded using an entropy code and including the step of decoding the received high frequency component with a complimentary entropy decoder.
Claim 15
Independent Claim
124 words
A method of receiving and processing a video signal comprising: receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component and occurring during non-active intervals of the high frequency component, the high frequency component comprising a third digital bit stream encoded in a compressed form; decoding the first and second digital bit streams for generating a recovered low frequency component; decoding the third digital bit stream for generating a recovered high frequency component; and combining the recovered high frequency component with the recovered low frequency component for generating a recovered video signal.
Claim 16
Independent Claim
124 words
A method of receiving and processing a video signal comprising: receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component and occurring during non-active intervals of the high frequency component, the high frequency component comprising a third digital bit stream encoded in a compressed form; decoding the first and second digital bit streams for generating a recovered low frequency component; decoding the third digital bit stream for generating a recovered high frequency component; and combining the recovered high frequency component with the recovered low frequency component for generating a recovered video signal.
Claim 17
Dependent Claim
142 words
A video processor comprising means for separating a low frequency component from a video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for subtracting the first and second digital bit streams from the video signal to generate a high frequency component; means for combining the first and second bit streams with the high frequency component, including means for inserting the first and second digital bit streams in the vertical blanking interval of the high frequency component; and means for transmitting the combined signal.
Claim 18
Dependent Claim
142 words
A video processor comprising means for separating a low frequency component from a video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for subtracting the first and second digital bit streams from the video signal to generate a high frequency component; means for combining the first and second bit streams with the high frequency component, including means for inserting the first and second digital bit streams in the vertical blanking interval of the high frequency component; and means for transmitting the combined signal.
Claim 19
Dependent Claim
21 words
The video processor of claim 12 further including analog-to-digital conversion means for supplying a digital video signal to the separating means.
Claim 20
Dependent Claim
19 words
The video processor of claim 12 further including means for encoding the high frequency component using an entropy code.
Claim 21
Dependent Claim
119 words
A video processor comprising: separating means for separating a low frequency component from a video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for generating a reconstructed low frequency component in response to the first and second digital bit streams; and means for subtracting the reconstructed low frequency component from the video signal to generate a high frequency component signal.
Claim 22
Dependent Claim
119 words
A video processor comprising: separating means for separating a low frequency component from a video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for generating a reconstructed low frequency component in response to the first and second digital bit streams; and means for subtracting the reconstructed low frequency component from the video signal to generate a high frequency component signal.
Claim 23
Dependent Claim
21 words
The video processor of claim 15 further comprising analog-to-digital conversion means for supplying a digital video signal to the separating means.
Claim 24
Dependent Claim
29 words
The video processor of claim 15 further including means for combining the first and second bit streams with the high frequency component and means for transmitting the combined signal.
Claim 25
Dependent Claim
32 words
The video processor of claim 17 wherein the means for combining includes means for inserting the first and second digital bit streams in the vertical blanking interval of the high frequency component.
Claim 26
Dependent Claim
19 words
The video processor of claim 15 further including means for encoding the high frequency component using an entropy code.
Claim 27
Dependent Claim
162 words
A video processor comprising means for providing a digital video signal; means for separating a low frequency component from the digital video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for generating a reconstructed low frequency component in response to the first and second digital bit streams; means for subtracting the reconstructed low frequency component signal from the digital video signal to generate a high frequency component; means for generating a third digital bit stream by encoding the high frequency component using an entropy code; and means for combining the first, second and third digital bit streams in a time division multiplex format.
Claim 28
Dependent Claim
162 words
A video processor comprising means for providing a digital video signal; means for separating a low frequency component from the digital video signal; means for generating a first signal representing the absolute value of the differential of the low frequency component; first encoding means for generating a first digital bit stream representing changes in the direction of the magnitude of the first signal; second encoding means for generating a second digital bit stream representing changes in the rate of change of the magnitude of the low frequency component; means for generating a reconstructed low frequency component in response to the first and second digital bit streams; means for subtracting the reconstructed low frequency component signal from the digital video signal to generate a high frequency component; means for generating a third digital bit stream by encoding the high frequency component using an entropy code; and means for combining the first, second and third digital bit streams in a time division multiplex format.
Claim 29
Dependent Claim
105 words
Apparatus for receiving and processing a video signal comprising: means for receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component; means for separating the first and second digital bit streams from the high frequency component; means for decoding the first and second digital bit streams for generating a reconstructed low frequency component; and means for combining the high frequency component and the reconstructed low frequency component for generating a recovered video signal.
Claim 30
Dependent Claim
105 words
Apparatus for receiving and processing a video signal comprising: means for receiving a video signal including a high frequency component and a low frequency component, the low frequency component comprising first and second digital bit streams respectively representing changes in the direction and in the rate of change of the low frequency component; means for separating the first and second digital bit streams from the high frequency component; means for decoding the first and second digital bit streams for generating a reconstructed low frequency component; and means for combining the high frequency component and the reconstructed low frequency component for generating a recovered video signal.
Claim 31
Dependent Claim
52 words
Apparatus according to claim 21 wherein the received high frequency component comprises an entropy coded third digital bit stream and including means for decoding said third bit stream for generating a reconstructed high frequency component, said combining means combining said reconstructed low and high frequency components for generating said recovered video signal.
Claim 32
Independent Claim
84 words
A method of processing and transmitting a video signal comprising: separating a low frequency component from the video signal; encoding the low frequency component using a predetermined data compression method for developing a digital bit stream representing the low frequency component; subtracting the low frequency component from the video signal to derive a high frequency component; and transmitting both the high frequency component and the digital bit stream, the digital bit stream being transmitted during the horizontal blanking interval of the high frequency component.
Claim 33
Independent Claim
84 words
A method of processing and transmitting a video signal comprising: separating a low frequency component from the video signal; encoding the low frequency component using a predetermined data compression method for developing a digital bit stream representing the low frequency component; subtracting the low frequency component from the video signal to derive a high frequency component; and transmitting both the high frequency component and the digital bit stream, the digital bit stream being transmitted during the horizontal blanking interval of the high frequency component.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |