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:
Apr. 07, 1987
Filed:
Oct. 11, 1984
Applicant:
Inventor:
Takayuki Ozaki, Nasu, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375 14 ; 375 15 ; 375103 ; 371 57 ;
Abstract
A digital radio receiving apparatus includes a transversal demodulator which is controlled under an internal control mode and an external control mode selectively by means of a control circuit. The control circuit operates under the external control mode every time an alarm signal is issued when the transversal modulator functions in an abnormal operation state due to fading. In the external control mode, the control circuit produces an optimum control signal for elimination of the alarm signal.