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:
Apr. 04, 1989
Filed:
Sep. 16, 1987
Shigenobu Kimura, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A digital-to-analog converting circuit increases an absolute value of inputted digital data by a bit shift operation when minute digital data are inputted thereto. The shifted digital data are converted into an analog signal, and thereafter, such analog signal is attenuated in accordance with a shift value of the bit shift operation. The bit shift operation and the attenuation operation are performed when the value of the inputted digital data are smaller than a predetermined value for a predetermined time or more. Thus, a conversion accuracy of the minute digital data is raised, and a distortion generation depending on a frequently switching of the bit shift is avoided.