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US 6,369,659 B1Granted
Clock recovery system using wide-bandwidth injection locked oscillator with parallel phase-locked loop
AssigneeTektronix, Inc.
InventorsDonald J. Delzer, Dan H. Wolaver
Life of this patent
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Abstract
A clock recovery system includes a source of a data signal, and a free-running frequency adjustment circuit. The free-running frequency adjustment circuit includes an injection-locked oscillator having a free-running frequency and generating a clock signal and a phase locked loop, coupled in parallel with the injection locked oscillator, and generating a control signal adjusting the free running frequency of the injection locked oscillator.
Claims5
A clock recovery system comprising:
- a source of a data signal;
- an injection-locked oscillator, coupled to the data signal source, having a free-running frequency and generating a clock signal;
- and
- a phase locked loop, coupled in parallel with the injection locked oscillator, and generating a control signal adjusting the free running frequency of the injection locked oscillator as a function of the clock signal and the data signal.
1 more element
Dependencies are inferred from the claim text.