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:
Jul. 28, 1998
Filed:
Dec. 13, 1994
Applicant:
Inventors:
Naohisa Suzuki, Yokohama, JP;
Koji Fukunaga, Tokyo, JP;
Masaki Nishiyama, Yokohama, JP;
Tsutomu Takahashi, Kawasaki, JP;
Jiro Tateyama, Yokohama, JP;
Jun Oida, Kawasaki, JP;
Hisatsugu Naito, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisa, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395839 ; 395877 ; 364235 ; 364930 ;
Abstract
In a data transfer method, virtual handshake busy data is transferred to an I/O register when data is transferred through a parallel interface between data processing and printer units connected to the I/O register through a bus and a transfer storage area in the printer unit has an empty area having a predetermined amount or more.