Statistical multiplexer for live and pre-compressed video
US6005620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4347
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for statistically multiplexing a plurality of video signals is provided with a complexity detector, coupled to receive a pre-compressed video signal, for generating a complexity signal which relates to the complexity of the pre-compressed video signal, an encoder for compressing a non-compressed video signal at a variable compression rate to generate a compressed video signal, a controller for controlling the variable compression rate of the encoder based on the complexity signal, and a multiplexer coupled to receive the pre-compressed video signal and the compressed video signal. The apparatus may be provided in a broadcasting system, such as a satellite broadcasting system. The broadcast system may include a transmitter coupled to receive the video signals from the multiplexer, a satellite coupled to receive the video signals from the transmitter, a receiver for receiving video signals from the satellite, and one or more decoders connected to receive video signals from the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.