System and method for generating and using table of content (TOC) prints
US7590035B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Mar 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99939
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Table of contents (TOC) information contained in an audio CD is used to generate a TOC print which may be used for identifying the CD. The TOC print is generated based on the lengths of the tracks contained in the CD. A track vector is generated based on each track length and a matrix is created using the generated track vectors. A singular value decomposition (SVD) computation is performed on the matrix for decomposing the matrix into a set of linearly independent basis vectors. One or more of the basis vectors are selected and set as the TOC print for the CD. Once the TOC print has been generated, the TOC print may be compared against the TOC prints of known CDs in a central database to retrieve from the database metadata information stored in association with the known CDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.