Systems and methods to improve timestamp transition resolution
US10347262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Dec 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/467
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, apparatus, and articles of manufacture to improve timestamp transition resolution of watermarks are disclosed. An example system includes a watermark detector to detect watermarks and a decoder to decode timestamps in respective ones of the watermarks. The example system also includes a timestamp transition resolution enhancer that estimates a first transition window indicative of a transition between a first time period to a second time period based on a first one of the timestamps and a second one of the timestamps. The timestamp transition resolution enhancer also estimates, when the first transition window does not satisfy a threshold, a second transition window indicative of a transition between the second time period and a third time period based on the second timestamp and a third one of the timestamps. In addition, the timestamp transition resolution enhancer determines a first mapped transition window based on an intersection of the first transition window and the second transition window, and sets the first mapped transition window as a reference time transition window for subsequent time periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.