Apparatus and methods for synchronizing a clock to a network clock
US5559550A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4316
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods are provided for synchronizing a clock to a network clock. In one embodiment the apparatus includes a device for receiving a first compressed code representative of, and compressed in length from, the combination of a channel, a time-of-day, and a length of time for a first program on a first day and on a first channel currently displayed on a television, a decoder for decoding the first compressed code into a first channel, a first time-of-day, and a first length of time, a device for receiving an end of program indication for the program, and a device for loading the sum of the first time-of-day and the first length of time into the clock calendar in response to receiving the end of program indication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.