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.:

US 8565291 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 22, 2013

Filed:

Jun. 23, 2011
Applicant:

Hirofumi Nishi, Kanagawa, JP;

Inventor:

Hirofumi Nishi, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A communication apparatus for executing half-duplex data communication conforming to V.34 recommendation including, a modulation-demodulation device modulating and demodulating data; a control device determining that the communication procedure shift to a recovery procedure by receiving an INFOtransmitted from an answering-communication apparatus again when the communication apparatus mistakenly detects a Tone A subsequently to the INFOfor a Tone Ā or the answering-communication apparatus cannot receive an initial INFOtransmitted from the communication apparatus correctly, the control device commanding the modulation-demodulation device to stop the recovery procedure when the communication apparatus receives the INFOwhile waiting to receive an INFOeven without receiving the INFOfrom the answering-communication apparatus in the recovery procedure; and a CODEC/DAA receiving the command and causing the communication procedure to return to a predetermined state in Phase 2 based on the command from the control device after the recovery procedure is stopped.


Find Patent Forward Citations

Nishi, Hirofumi. (2013). Communication apparatus, data communication method, and storage medium storing data communication program (U.S. Patent No. 8565291). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8565291

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