Video processing system
First Claim
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1. A video processing system comprising:
- (a) analogue to digital converter means for receiving a video signal and converting said signal into digital form;
(b) a digital frame store for receiving and storing the converted video data;
(c) store addressing means for addressing locations within the frame store to write in and read out data therefrom;
(d) digital to analogue converter means for receiving data read out from said frame store and for converting the data into analogue form; and
(e) accessing means for providing random access to the frame store locations during the video blanking time to allow processing of the data with an algorithm so as to modify the data held at the accessed location in the store.
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Abstract
A video processing system comprises an analogue to digital converter for receiving a video signal and converting the signal into digital form. A digital frame store receives and stores the converted video data. Store addressing means address locations within the frame store to write in and read out data therefrom. A digital to analogue converter receives the data read out from the frame store and converts the data into analogue form and accessing means provides random access to the frame store locations during the video blanking time to allow processing of the data with an algorithm.
210 Citations
11 Claims
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1. A video processing system comprising:
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(a) analogue to digital converter means for receiving a video signal and converting said signal into digital form; (b) a digital frame store for receiving and storing the converted video data; (c) store addressing means for addressing locations within the frame store to write in and read out data therefrom; (d) digital to analogue converter means for receiving data read out from said frame store and for converting the data into analogue form; and (e) accessing means for providing random access to the frame store locations during the video blanking time to allow processing of the data with an algorithm so as to modify the data held at the accessed location in the store. - View Dependent Claims (2)
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3. A video processing system comprising:
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analogue to digital converter means for receiving a video signal and converting said signal into digital form; a digital frame store for receiving and storing the converted video data; store addressing means for addressing locations within the frame store to write in and read out data therefrom; digital to analogue converter means for receiving data read out from said frame store and for converting the data into analogue form; accessing means for providing random access to the frame store locations during the video blanking time to allow processing of the data with an algorithm so as to modify the data held at the accessed location in the store; control means for controlling the writing in and reading out of data from the store at the locations specified by the store addressing means; and read and write sequence generator means for sequencing of the store addressing means, and wherein the accessing means comprises; a computer for generating the required address location information; computer address means for receiving the address information and for applying the required addresses to the store addressing means; computer buffer means for receiving data read from said frame store or data to be written into said frame store; and computer sequencing means for providing timing signals for the computer address means and said computer buffer means to ensure that the data contained within the computer buffer means is only read from or written into the store during the line blanking interval. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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Specification