Graphic image re-encoding and distribution system and method
US7162080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2001 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Jul 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image file, which typically represents a palette-based image that has been encoded using a first predefined run-length based encoding method, is decoded to produce an image data array. The image data array is divided into blocks; either all the blocks or a majority of the blocks have a predefined fixed size. At least some of the blocks of the image are processed to produce a corresponding re-encoded block. In particular, each such block is processed by applying a plurality of distinct encodings to the block to produce an equal plurality of distinct re-encoded block versions. One of the plurality of distinct re-encoded block versions is selected in accordance with predefined selection criteria for use as the re-encoded block. Each re-encoded block is stored in a distinct data structure, such as a file. In a client-server network, when a low bandwidth client device requests an image file, just the block image files needed by the client device are downloaded, thereby greatly reducing the request to display delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.