The simultaneous updating of display pixels involves too much bandwidth if done in a direct way. Pixels could be simultaneously updated from memory that is written to by serial scanning and read in a simultaneous dump. The memory construction is a problem, since the individual stores for each pixel will probably be analog signal stores, which would have to be matched to each other. Al Limberg ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.