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:
Aug. 30, 1994
Filed:
Nov. 02, 1993
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A signal discrimination circuit is provided with: a prediction circuit for releasing a prediction signal that is formed by making a linear prediction based on a previous input signal; a differential operation circuit for calculating the difference between the input signal and the prediction signal so as to release a predicted remainder; and a decision circuit for determining whether or not the degree of the variation of the predicted remainder from the zero level is maintained within a predetermined range. Therefore, even if a sound signal having a time-wise correlation and white noise having no time-wise correlation possess wide frequency components respectively, both of the signals are discriminated by the decision circuit based on the difference in the correlation. Thus, the signal discrimination circuit ensures an accurate discrimination between a control signal for a facsimile containing white noise and a sound signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile