METHOD AND APPARATUS FOR AUTOMATIC COMPENSATION OF SKEW IN VIDEO TRANSMITTED OVER MULTIPLE CONDUCTORS
First Claim
1. A method for automatic compensating of skew in a signal comprising a plurality of components transmitted over a plurality of conductors comprising:
- providing a reference signal to said plurality of components;
transmitting said plurality of components over a plurality of conductors;
receiving said plurality of components transmitted over said plurality of conductors;
detecting said reference signals provided to said plurality of components;
determining skew between a first of said plurality components and a second one of said plurality of components; and
applying delay compensation to said second of said plurality components.
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Accused Products
Abstract
A method and apparatus for automatic detection and compensation of skew between color components of a video source transmitted over a plurality of twisted pair conductors are presented. The system includes a receiver configured to receive separate components of a video source over each twisted pair conductor in a twisted pair cable. Each color component includes a reference signal. High speed comparators and samplers are used to detect the reference signal and measure the skew between the color components. Delay is applied to the first arriving color components to synchronize them in time with the last arriving color component. Skew measurement is continuous and adjustment is automatic while the receiver is receiving a video signal.
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Citations
20 Claims
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1. A method for automatic compensating of skew in a signal comprising a plurality of components transmitted over a plurality of conductors comprising:
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providing a reference signal to said plurality of components; transmitting said plurality of components over a plurality of conductors; receiving said plurality of components transmitted over said plurality of conductors; detecting said reference signals provided to said plurality of components; determining skew between a first of said plurality components and a second one of said plurality of components; and applying delay compensation to said second of said plurality components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for compensation of skew in video transmitted over twisted pair conductors comprising:
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receiving a first video signal component over a first twisted pair of conductors, wherein said first video signal component includes a first reference pulse signal; receiving a second video signal component over a second pair of twisted conductors, wherein said second video signal component includes a second reference pulse signal; detecting said first reference pulse signal in said received first video signal component; detecting said second reference pulse signal in said second received video signal component; determining skew between said first reference pulse signal and said second reference pulse signal; and applying delay compensation to a first arriving one of said first reference pulse signal and said second reference pulse signal to reduce the skew between said first reference pulse signal and said second reference pulse signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for compensation of skew in video transmitted over twisted pair conductors comprising:
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a circuit for receiving a plurality of video signals, each one of said plurality of video signals including a reference pulse signal; a detector circuit for detecting said reference pulse signal in said plurality of video signals; a skew determination circuit for determining skew between a first one of said plurality of video signals and a second one of said plurality of video signals; and an adjustable delay circuit for applying an adjustable delay to said first and second of said plurality of video signals to reduce said skew. - View Dependent Claims (17, 18, 19, 20)
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Specification