System and method for improving video transmission over a wireless network
US6798838B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed a wireless communication device capable of receiving an incoming RF data signal and generating therefrom a base layer data stream and at least one enhancement layer data stream. The wireless communication device comprises: 1) a base layer decoder, 2) at least one enhancement layer decoder, 3) a variable mode receiver for demodulating the RF incoming RF data signals in a plurality of physical modes, such as BPSK, QPSK, QAM, and the like, and at a plurality of code rates and 4) a receiver mode controller for controlling the physical modes of the variable mode receiver. The receiver mode controller causes a first demodulated output signal of the variable mode receiver to be transferred to the base layer decoder when the variable mode receiver is operating in a first physical mode and causes a second demodulated output signal of the variable mode receiver to be transferred to the at least one enhancement layer decoder when the variable mode receiver is operating in a second physical mode. There also is disclosed a second wireless communication device for transmitting an outgoing RF data signal comprising a base layer data stream and at least one enhancement layer dat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.