Manipulating and encrypting media packets
US8204221B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/23895
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for transmitting encrypted packets, the method includes: receiving a program that comprises an encrypted video stream, an encrypted audio stream and an encryption information stream; rescheduling a transmission of a certain encrypted video packet of the encrypted video stream to provide an altered encrypted video stream; rescheduling, in response to the rescheduling of the transmission of the certain encrypted video packet and in response to at least one encryption timing constraint, a first transmission of a certain encryption information item that is used to encrypt the certain encrypted video packet to provide an altered encryption information stream; and transmitting an amended program that comprises the altered encrypted video stream, the encrypted audio stream and the altered encryption information stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.