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:
Jun. 11, 2002
Filed:
Dec. 03, 1998
Shunichi Kondoh, Hyogo, JP;
Other;
Abstract
Comparators receiving reference voltages are provided. An output signal from a differential amplifier is applied to these comparators. Here, the relationship of Vref >Vref >Vref >Vref >Vref >Vbias>Vref >Vref >Vref >Vref >Vref is established. The output signals from the comparators are applied to a data latch/threshold level select circuit. The select circuit retains the maximum peak level of the prior comparison by the comparators, and retains the minimum peak value of the prior comparison by the comparators. The select circuit selects the output signal of the comparator of one lower level than the comparator that detects the maximum peak level at the prior comparison to supply the selected signal to a RS flip-flop circuit, and selects the output signal of the comparator of one higher level than the comparator that detects the minimum peak level at the prior comparison to supply the selected signal to the RS flip-flop circuit. The RS flip-flop circuit outputs a detection signal of a VISS signal in response to these select signals. As a result, a VISS signal detection circuit can reliably detect only the VISS signal without detecting the erase noise.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile