Real time clock circuit having an internal clock generator
US6958953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2003 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | Jan 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Under the present invention a real time clock circuit, within a set-top box, is provided with an internal clock generator for generating multiple clock signals. Once generated, a first clock signal is divided into an initial set of values representing time and optionally day/date intervals, and then communicated to a set of clock registers. The initial set of values can then be communicated (directly or via a set of DCR registers) to a display component within the set-top box. Updated clock signals are received by the set of DCR registers from an external source such as a satellite or the like thus making the clock very accurate, and are communicated to the display component. Similar to the initial set of values, the updated set of values could be communicated to the display component directly from the set of DCR registers, or via the set of clock registers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.