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:
Mar. 18, 1986
Filed:
Apr. 22, 1983
Yasuaki Watanabe, Kasukabe, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
An intermodulation distortion reducing circuit for a frequency-modulated signal comprises a sinusoidal wave shaping circuit supplied with an input frequency-modulated signal including an intermodulation distortion component, for shaping the waveform of the input frequency-modulated signal into a waveform closely approximating a sinusoidal wave, and a mean DC level detecting circuit supplied with an output signal of the sinusoidal wave shaping circuit, for detecting a mean DC level of the output signal of the sinusoidal wave shaping circuit and producing a detection output. The sinusoidal wave shaping circuit is supplied with the detection output of the mean DC level detecting circuit and a waveform shaping quantity thereof is varied to obtain the waveform closely approximating the sinusoidal waveform. The sinusoidal wave shaping circuit produces a frequency-modulated signal having a waveform closely approximating a sinusoidal waveform, with its intermodulation distortion component reduced.