Patent ID: 6243129
Filing Date: 2001-06-05
Classification: H04N

Abstract:
A videoconferencing arrangement for simultaneous viewing of videoconferencing data along with video data from a supplemental video source, comprising:a codec configured and arranged to provide decompressed videoconferencing data from a first source;a first analog-to-digital converter, configured and arranged to provide digital videoconferencing data from a second source;a second analog-to-digital converter, configured and arranged to provide digital video data from the supplemental source;a video processor coupled to the codec, first converter, and second converter, the video processor configured and arranged to receive selection signals and responsive thereto, generate composite video data including selected scaled video data from the first source and second source overlaid on video data from the supplemental source;a selector coupled to the codec the first converter and responsive to the selection signals, and arranged to output selected video data in response to the selection signals;a first register arranged for storage of a value indicative of a horizontal screen position at which display of scaled video data begins;a second register arranged for storage of a value indicative of a horizontal screen position at which display of scaled video data ends;a third register arranged for storage of a value indicative of a vertical screen position at which display of scaled video data begins;a second register arranged for storage of a value indicative of a vertical screen position at which display of scaled video data ends; andmeans coupled to the first, second, third, and fourth registers for generating the selection signals responsive to values in the registers and a present pixel position.