Method and system for providing snapshots from a compressed digital video stream
US6172672A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/816
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system are provided for delivering video from a client to a server over a communication medium with a limited bandwidth. An initial image quality that allows the video to be displayed in real time at the client is determined based on a predetermined frame rate and the limited bandwidth. Video having the initial image quality is transmitted to the client. While transmitting the video to the client, the server receives a message from the client that indicates selection of a second frame rate that is slower than the predetermined frame rate. In response to the message from the client, the server determines a second image quality that allows the video to be displayed in real time at the client based on the second frame rate and the limited bandwidth. The second image quality is higher than the initial image quality. The video with the second image quality is then transmitted to the client. A "snapshot" feature is also provided. A predetermined user input is received at the client. In response to the predetermined user input at the client, a message is transmitted from the client to the server that indicates a particular frame in the video. In response to receiving the mess…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.