Method and system for compressing structured descriptions of documents
US6825781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Nov 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoding method for enabling a decoder to decode a structured document having a structure defined in a first schema not accessible to the decoder and resulting from a change of a second schema accessible to the decoder, the first schema defining at least one information element which is derived from a corresponding element defined in the second schema, the encoding method comprising the steps of: encoding the document using said first and second schemas into a binary stream comprising for each elements of the document a binary sequence encoding the element, and inserting in the binary sequence encoding the derived element a reference designating the first schema in which the structure of the derived element is defined, said reference designating the first schema being defined in a schema reference list containing references to all schemas used for encoding the document, the schema reference list being made accessible to the decoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.