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. 29, 2000
Filed:
Oct. 13, 1998
Masamitsu Hirano, Hamamatsu, JP;
Masao Noro, Hamamatsu, JP;
Yamaha Corporation, Shizuoka-ken, JP;
Abstract
There are provided a waveform shaper that shapes a waveform of a one-bit data signal obtained by subjecting an input data signal to sigma-delta modulation, to generate an output data signal, and a sigma-delta D/A converter incorporating the waveform shaper. A clock jitter-detecting device detects jitter of a clock signal used for generating the one-bit data signal and generates an error signal indicative of the detected jitter of the clock signal. An amplitude-adjusting device shapes the waveform of the one-bit data signal by using the clock signal, and adjusts amplitude of the shaped one-bit data signal in response to the error signal, to generate the output data signal.