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. 17, 2007
Filed:
Mar. 07, 2002
Kazuo Goto, Shizuoka, JP;
Kazuo Goto, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
At the time when the control signal line of a printer controller is connected to the input terminal of a three-state buffer, the control signal line is connected also to the D input terminal of the flip-flop that operates according to the FFCK clock. The control signal of Q output signal of the flip-flop is inputted into the AND gate circuit, and the output signal of the gate is inputted into the control terminal of three-state buffer. Accordingly, by synchronizing the signal to the place where the level of control signal line starts, the level of data signal line changes from levelto the level of output. After that, waveform rounding that is generated at the time of releasing the signal line is reduced to enable higher communication speed.