T.V. apparatus for movement control
First Claim
1. A video processing system comprising frame storage means for storing incoming picture information from first and second fields, means for determining any difference in the picture information attributable to movement, control means for reducing the movement content made available from the frame storage means to reduce bandwidth requirements, and feedback means for providing at least a part of the previously stored information for use with at least part of the incoming information to provide residual persistence for moving portions of the picture, said feedback means including an arithmetic processor for manipulating the stored and incoming information in selected proportions determined by the control means.
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Accused Products
Abstract
A video processing system for reducing data content requirements along a transmission path. A movement processor which includes a framestore is capable of detecting both interfield and interframe movement and uses this to manipulate the data so as to inhibit or attenuate the movement content so that the available bandwidth is not exceeded. This manipulation can also be used to provide residual movement persistence between frames and to reduce picture noise content. A processor at the remote end of the transmission path can reconstitute the data to make it available at normal video rates.
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Citations
13 Claims
- 1. A video processing system comprising frame storage means for storing incoming picture information from first and second fields, means for determining any difference in the picture information attributable to movement, control means for reducing the movement content made available from the frame storage means to reduce bandwidth requirements, and feedback means for providing at least a part of the previously stored information for use with at least part of the incoming information to provide residual persistence for moving portions of the picture, said feedback means including an arithmetic processor for manipulating the stored and incoming information in selected proportions determined by the control means.
- 7. A system for processing video information with a view to facilitating data rate reduction in a transmission channel, which comprises, means for receiving video signals organised in sequential pairs of fields, means for temporarily storing signals in at least the first of a pair of said fields pending the provision of signals in the second of said pair of fields, means for outputting signals in said first field during a first field period, means for comparing signals in said second field with related stored signals in said first field, during a second field period, means for outputting signals in said second field during said second field period when said comparison means indicates a relatively small difference between the compared signals and for outputting signals in the first field when said comparison means indicates a relatively large difference between the compared signals, said means for storing, outputting and comparing being arranged to operate continuously on video signals in sequential pairs of said fields, and a transmission path for said output signals.
- 10. A method of processing video information with a view to facilitating data rate reduction in a transmission channel, which comprises the steps of receiving video signals organised in sequential pairs of fields, temporarily storing signals in at least the first of a pair of said fields pending the provision of signals in the second of said pair of fields, outputting signals in a first field during a first field period, comparing signals in the second field with the related stored signals in said first field, outputting signals in the second field during a second field period when said comparison indicates a relatively small difference between the compared signals, outputting signals in the said first field during said second field period when said comparison indicates a relatively large difference between the compared signals, continuing said steps of storing, comparing and outputting in respect of said video signals in successive pairs of said fields, and applying said output signals to a transmission path.
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12. A system for processing video information with a view to facilitating data rate reduction in a transmission channel, which comprises, means for receiving video signals organised in sequential scans of a picture area, means for temporarily storing signals in at least the first of a pair of said scans pending the provision of signals in the second of said pair of scans, means for outputting signals in said first scan during a first scan period, means for comparing signals in said second scan with related stored signals in said first scan, during a second scan period, means for outputting signals in said second scan during said second scan period when said comparison means indicates a relatively small difference between the compared signals and for outputting signals in the first scan when said comparison means indicates a relatively large difference between the compared signals, said means for storing, outputting and comparing being arranged to operate continuously on video signals in sequential pairs of said scans, and a transmission path for said output signals.
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13. A method of processing video information with a view to facilitating data rate reduction in a transmission channel, which comprises the steps of receiving video signals organised in sequential scans of a picture area, temporarily storing signals in at least the first of a pair of said scans pending the provision of signals in the second of said pair of scans, outputting signals in a first scan during a first scan period, comparing signals in the second scan with the related stored signals in said first scan, outputting signals in the second scan during a second scan period when said comparison indicates a relatively small difference between the compared signals, outputting signals in the said first scan during said second scan period when said comparison indicates a relatively large difference between the compared signals, continuing said steps of storing, comparing and outputting in respect of said video signals in successive pair of said scans, and applying said output signals to a transmission path.
Specification