MPEG encoding technique for encoding web pages
US6389075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | May 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4622
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for digitally encoding video image data, which is particularly suited for encoding Internet Web pages, eliminates the need for performing time consuming, computationally intensive motion vector searches by taking advantage of prior knowledge regarding the Web page movement. In a first preferred embodiment, a digital video encoder, such as an MPEG encoder, employs Web page scrolling coordinates obtained from a browser application to determine, through calculation instead of searching, motion estimation for all the macroblocks of the present image frame relative to the previous frame. In a second preferred embodiment, the encoder receives information from the browser application that indicates that certain portions of an image, such as a Web page animation window, are continuously changing, and thus should be encoded as an intra frame. The invention may be employed in a cable television system which includes Internet access capabilities that permit system users to download Web pages for viewing on their televisions from a remote browser application located in the cable system's headend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.