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. 28, 2012
Filed:
Jan. 29, 2009
Haruya Ishizaki, Tokyo, JP;
Haruya Ishizaki, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A sampling section (A) includes a sampling filter () that converts a continuous-time signal into a discrete-time signal and applies filtering of low-pass characteristics and a one-bit quantizer () that outputs a quantized signal representing a time-dependent change in the discrete-time signal. A synchronization section (B) includes a phase difference detector () that calculates the phase difference between an inspection signal and the quantized signal and a delay control circuit () that feeds back the inspection signal to the phase difference detector at the timing set in consideration of a delay amount corresponding to the phase difference. When the phase difference between the inspection signal and the current quantized signal shows the same phase, the phase of the inspection signal is detected as a reference phase.