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. 02, 2002
Filed:
Nov. 12, 1998
Koji Harada, Rennes, FR;
Takehiro Yoshida, Tokyo, JP;
Hitoshi Saito, Kawasaki, JP;
Koji Nishioka, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication apparatus and method is arranged such that, when executing a communication protocol conforming to V.34 recommendation, the communication procedure is appropriately recovered even if a second tone signal (a tone A or a tone B) is not received within 2 seconds. A CPU (central processing unit) recognizes a state of execution of the communication procedure by a modem. When the second tone A signal (or tone B signal) has not been received, the CPU causes the modem to receive the tone A signal for a defined time period. When the tone A signal has been received within the defined time period, the CPU returns the communication procedure conforming to the V.34 recommendation by the modem to the first half portion of phase 2.