Channel switching multicast distribution apparatus and method, and multicast reception apparatus
US7894465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2007 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1881
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A channel-switching multicast distribution apparatus in a system for providing channels by multicast. The apparatus includes a device for receiving multicast data of a first multicast group for a first channel; a device for storing the received multicast data; a delaying device for reading the stored multicast data, and delaying the data by a predetermined time; and a transmission device for transmitting the delayed data through a second multicast group for performing channel switching so as to select the first channel. Instead of the delaying device and the transmission device, a data rearranging device for reading the stored multicast data, and rearranging the data so as to change the order of packets thereof; and a transmission device for transmitting the rearranged data through a second multicast group for performing channel switching so as to select the first channel may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.