Analog clock module
OwnerRobert Bruce Gage, Benjamin Browninventors
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Abstract
An analog clock apparatus is disclosed including a digital clock source for producing a digital waveform of a predetermined frequency and a direct-digital-synthesizer. The synthesizer has an input to receive the digital waveform and is operative to generate a resultant analog waveform. Prediction logic is coupled to the digital clock source and the synthesizer for determining the relative phase relationships between the digital waveform and the analog waveform. The prediction logic is responsive to a prediction clock having a clock frequency approximating that of said digital clock source.
Claims14
An analog clock apparatus including:
- a digital clock source for producing a digital waveform of a predetermined frequency;
- a direct-digital-synthesizer having an input to receive said digital waveform and operative to generate a resultant analog waveform, said direct-digital synthesizer including a prediction clock to generate a prediction clock waveform having a clock frequency based on said analog waveform and approximating that of said digital clock source;
- and
- prediction logic coupled to said digital clock source and said prediction clock for determining the relative phase relationships between said digital waveform and said analog waveform.
An analog clock apparatus including:
- a digital clock source for producing a digital waveform of a predetermined frequency;
- a direct-digital-synthesizer having an input to receive said digital waveform and operative to generate a resultant analog waveform;
- and
- opcode passing circuitry disposed at the output of said synthesizer;
- and
- prediction logic coupled to said digital clock source and said synthesizer for determining the relative phase relationships between said digital waveform and said resultant analog waveform.
Dependencies are inferred from the claim text.