Adaptive-rate coded digital image transmission
US6154489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/658
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive arrangement and method for the coded digital transmission of images includes an adaptive transmitter (101) having an image coder (109) which is operable at multiple image coding rates, a channel coder (111) which is operable at a plurality of channel coding rates, and is further operable to provide a plurality of power outputs, baud rates, and a plurality of image delivery rates. The transmitter (101) further includes a channel status monitor (115) which monitors the communication channel (105) connecting the transmitter (101) to a receiver (103). The channel status monitor (115) responds to changes in the quality of the communications channel by varying one or more of the image coding rate, the channel coding rate, the power, the baud rate, and the image delivery rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.