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. 27, 1991
Filed:
Sep. 07, 1990
Yoshiji Fujimoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A decoder for decoding a delta-modulated code represented with binary digit '1' or '0' to convert it into an analog signal, wherein when the delta-modulated code takes the first value ('1' or '0'), a positive pulse signal is applied to an integrator to increase its accumulated value by a constant value and when the delta-modulated code takes the second value ('0' or '1'), a negative pulse signal is appied to the integrator to decrease its accumulated value by the constant value, and this accumulated value of the integrator is outputted as an analog signal which corresponds to a code train of the delta-modulated code. The decoder is characterized in that it has a pulse width modulater which limits an effective pulse width of the pulse signal by performing pulse width modulation of the positive or negative pulse signal in response to a control signal.