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. 11, 1995
Filed:
Jun. 09, 1992
Applicant:
Inventor:
Susumu Matsuzaki, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358434 ; 370 32 ; 379100 ;
Abstract
A data communication apparatus for performing a communication of a procedure signal at a low transmission speed, and performing a communication of data at a high transmission speed, includes a discrimination unit for discrimination whether or not a received signal is an echo signal, and a detection unit for detecting reception of one of high- and low-speed signals according to a discrimination result of the discrimination unit at a timing at which the high- and low-speed signals in communication may be received.