Real time clock circuit having an internal clock generator

Details Real time clock circuit having an internal clock generator Real time clock circuit having an internal clock generator

2005-08-03

2010-02-09

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

C713S501000, C368S047000, C375S354000, C375S355000

Reexamination Certificate

active

07661008

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.

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