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:
Dec. 17, 2002
Filed:
Nov. 22, 2000
Norio Shoji, Kanagawa, JP;
Kimimasa Senba, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
A PLL (phase-locked loop) circuit is configured with a phase-error detection circuit comprises the following: a provisional judge circuit for provisionally judging a data signal being input to an A/D converter into three levels of , and − ; a pattern detector which, among data signals being input in accordance with a result of the provisional judgment, checks a transition pattern ranging from a data signal that precedes one clock cycle to the actually present data signal, and then, when a specific pattern is detected, instructs a selector to select output data from the A/D converter; and the selector which, in compliance with instruction from the pattern detector, selects phase-error data from data signals output from the A/D converter, and then converts the selected phase-error data into an electric current before externally delivering it as an error-current.