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. 24, 1998
Filed:
Sep. 09, 1996
Applicant:
Inventor:
Hiroshi Takizawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375326 ; 375330 ; 375332 ; 375365 ;
Abstract
A data receiver for transmitting data by changing the data into transmitted frames and by phase-modulating the data in a digital manner has a demodulation circuit for demodulating a phase-modulated signal by sync detection, a conversion circuit for converting the phase of an output from the demodulation circuit into a correct phase, and a sync detection circuit for detecting sync data of the transmitted frames from an output from the conversion circuit and for controlling the conversion circuit on the basis of a sync data undetected condition.