The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2010
Filed:
Apr. 03, 2007
John Wood, Santa Cruz, CA (US);
John Wood, Santa Cruz, CA (US);
Multigig Inc., Scotts Valley, CA (US);
Abstract
A system and method for converting an analog signal to a digital signal is disclosed. The system includes a multiphase oscillator preferable a rotary oscillator, a sample and hold circuit, an integrator and a time-to-digital converter. The multiphase oscillator has a plurality of phases that are used in the time-to-digital converter to measure the time of a pulse created by the integrator. The edges of the pulse may optionally be sharpened by passing the pulse through a non-linear transmission line to improve the accuracy of the measurement process. To cut down on noise a tuned power network provides power to the switching devices of the rotary oscillator. Calibration is performed by fragmenting the sample and hold circuit and integrator and performing a closed loop calibration cycle on one of the fragments while the other fragments are joined together for the normal operation of the sample and hold and integrator circuits.