Patent ID: 6396536
Filing Date: 2002-05-28
Classification: H04N

Abstract:
A method for producing a static composite video signal, comprising the steps of:providing a prime image memory (PIM) holding a main bit mapped image, holding sync and blanking patterns for lines of the video signal being generated in a composite sync memory (C-Sync), holding a series of arbitrary bit line patterns defined in a test program in two user specified pulse memories (USPs), arranging data blocks in a circular queue in a line parameter memory (LPM), each of the data blocks corresponding to a complete video line and containing pointers to specific entries in the PIM, the C-Sync and the USPs and a flag indicative of scan direction, initiating the production of the video signal by reading the LPM and extracting the pointers from the data blocks for a first line of the video signal being produced, obtaining and combining bits from the PIM, C-Sync and USPs based on the extracted pointers to thereby form the video signal, monitoring the length of the first line of video signal being produced to determine when the first line of video is complete, and then continuing production of additional lines of the video signal by reading the LPM to extract the pointers from the data blocks for the additional lines of the video signal being produced, obtaining bits from the PIM, C-Sync and USPs based on the extracted pointers and monitoring the length of the additional lines to determine when each additional line of video is complete.