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:
Nov. 12, 2002
Filed:
Apr. 28, 1999
Masashi Takada, Tokyo, JP;
Tatsumasa Yoshida, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
Radio receivers which switches the received voice signal according to a supervisory signal used for supervising the condition of the propagation path through which the voice signal is transmitted are known. However, if the reception level of the radio wave received by a conventional radio receiver is low, the level of the supervisory signal becomes lower while the level of the noise accompanying the supervisory signal becomes higher, whereby the noise acts like the supervisory signal so as to provide a voice signal containing a lot of noise to the user of the radio receiver. To solve this problem, the radio receiver according to the present invention compares the level of the supervisory signal and the level of the noise accompanying the supervisory signal, so as to control the outputting of the voice signal according to the comparison result.