H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/173 (2006.01)
Patent
CA 2464378
An interactive cable television system is disclosed which utilizes a standard cable television distribution network for simultaneously providing a plurality of viewers with an interactive television program comprising a plurality of signal related in time and content. Video signals (1) are transmitted in a digital format, more than one signal being multiplexed onto a data stream on a single channel. The video signals (1) may be compressed for efficiency. A receiver (7), in conjunction with a signal selector (8), selects a particular NTSC channel for playback, then selects a particular video signal from the data stream, and decompresses the video signal for playback. Seamless switching between video signals on different channels is provided. An alternative embodiment is disclosed wherein the various signals which comprise the interactive program are switched at the head end (300) rather than at the receiver (7). The multiple choice control unit (9) selects a desired signal by relating the multiple choice selections of the user through a relay box (17) back to a remotely located switching station. The switching station routes the correct video signal down the appropriate cable channel for the particular user.
Freeman Michael J.
Harper Gregory W.
Actv Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
Compressed digital-data interactive program system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compressed digital-data interactive program system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compressed digital-data interactive program system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1801090