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:
Jun. 23, 1992
Filed:
Oct. 26, 1990
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A digital audio signal is subjected to predetermined modulation using a predetermined carrier, and thereby the digital audio signal is converted into a modulated digital audio signal. An FM audio signal is generated. The modulated digital audio signal and the FM audio signal are combined into a composite audio signal. The composite audio signal is superimposed on a high-frequency bias signal, and thereby the composite audio signal is converted into a final modulated audio signal. The final modulated audio signal is recorded into a magnetic tape. A predetermined basic signal is generated. The predetermined carrier and the bias signal are generated from the basic signal. The predetermined carrier and the bias signal have a predetermined frequency relation which is chosen in dependence upon a frequency of beats caused by cross modulation between the modulated digital audio signal and the bias signal.