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:
Oct. 13, 1998
Filed:
Sep. 20, 1996
Keiichi Kaneko, Yokohama, JP;
Katsumi Ohno, Yokosuka, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
An IDFT section has a set of input terminals subjected to components of an information signal respectively. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a first in-phase signal and a first quadrature signal while assignment of the components of the information signal to the input terminals is in a first state. A first power-related value of one of the first in-phase signal and the first quadrature signal is calculated. The first in-phase signal and the first quadrature signal are written into an output buffer memory when the calculated first power-related value does not exceed a predetermined reference value. The assignment of the components of the information signal to the input terminals is changed from the first state to a second state when the calculated first power-related value exceeds the predetermined reference value. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a second in-phase signal and a second quadrature signal while the assignment of the components of the information signal to the input terminals is in the second state. A second power-related value of one of the second in-phase signal and the second quadrature signal is calculated. The second in-phase signal and the second quadrature signal are written into the output buffer memory when the calculated second power-related value does not exceed the predetermined reference value.