Simultaneous viewing and reliable recording of multimedia content over a network
US8379083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2008 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Dec 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/2416
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video surveillance system has an encoder receiving a video signal from a camera and generating real-time sequenced packets for streaming to a remote monitoring location. A transmit buffer is coupled to the encoder for buffering the sequenced packets. A transmit controller transmits an original packet stream comprising the sequenced packets. The transmit controller is responsive to retransmission requests to transmit sequenced packets from the transmit buffer as a retransmission stream. A receive controller is provided at the monitoring location for receiving the original packet stream and detecting missing packets from the original packet stream to transmit corresponding retransmission requests to the transmit controller for the missing packets. A decoder is responsive to the original packet stream to generate a reproduced video signal for viewing at the monitoring location. A recorder stores recorded video responsive to the original packet stream and the retransmission stream. The retransmission stream includes sequenced packets that are received too late to be used by the decoder for live reproduction, so that the recorded video provides a higher quality reproduced video signal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.