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US 8,392,001 B1Granted
Method and apparatus for externally aided self adjusting real time clock
AssigneeIntegrated Device Technology, Inc.
InventorsTacettin Isik, Jan Gazda
Life of this patent
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Abstract
A method and apparatus for externally aided self adjusting real time clock have been disclosed. A circuit having a pulse train output is coupled to an adjusting circuit, a real-time clock is coupled to the adjusting circuit, and a proportional integral derivative time processor is coupled to the adjusting circuit, and where the adjusting circuit affects the pulse train output.
Claims5
An apparatus comprising:
- a circuit having a pulse train output;
- an adjusting circuit having an input, a control input, and an output, said adjusting circuit input coupled to said pulse train output;
- a real-time clock having an input, a plurality of set inputs, and a plurality of counter outputs, said real-time clock input coupled to said adjusting circuit output, and said plurality of counter outputs producing a usable tangible result for a user;
- and
- a proportional integral derivative time processor having a first output and a second output, said first output operatively coupled to said adjusting circuit control input, and said second output operatively coupled to said plurality of set inputs.
2 more elements
Dependencies are inferred from the claim text.