Method and apparatus for deterministic date and time alignment of media signals and generation of time-related labels
US9979991B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Aug 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is described a method for generating a frame label for a media frame sampled at a media frame rate at a given time-of-day relative to a day-zero reference. The method comprises: obtaining a calendar day at which the media frame is sampled, the calendar day having a day origin; computing a day-origin phase offset at the day origin based on the day-zero reference and on the calendar day; subtracting the day-origin phase offset from the given time-of-day to get a media frame relative offset which is relative to a first frame of the calendar day; computing the frame label from the media frame relative offset and from the media frame rate; and assigning the frame label to the media frame for time-positioning the media frame with respect to other media frames and with respect to a timescale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.