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. 25, 2003
Filed:
Oct. 11, 2001
Toshiaki Tsujikawa, Tokyo, JP;
Nippon Precision Circuits Inc., Tokyo, JP;
Abstract
Automatic slice level control response to differential input signals is provided to remove in-phase noise and effects on S/N ratio Analog differential input signals Vinp and Vinn are inverted with respect to each other and applied to input terminals in and in of a comparator via resistors R and R . A data stream is provided giving DSV=0. A charge pump is driven by a digital signal from the comparator. A transconductance amplifier produces output current Itrc and Itrc that are mutually differential signals and in proportion to the voltage difference between the output voltage Vcp from the charge pump and a reference voltage Vref. The output currents are supplied to the input terminals in and in of the comparator to provide a DSV=0. The analog differential input signals are binarized by the comparator to remove in-phase noise