Communication apparatus and its control method

Details Communication apparatus and its control method Communication apparatus and its control method

1999-04-20

2003-02-25

Grant, II, Jerome (Department: 2724)

Facsimile and static presentation processing

Facsimile

C358S405000, C358S406000, C370S282000, C370S287000

Reexamination Certificate

active

06525841

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a communication apparatus, particularly to a facsimile machine which enables a V.34 communication, and to its control method.
2. Related Background Art
Conventionally, in a facsimile machine which enables V.8 and V.34 communications, an ECM communication is requisite to the V.34 communication, and therefore a V.17 or lower transmission is executed if an ECM transmit inhibition is selected and a V.17 or lower reception is executed if an ECM receive inhibition is selected. (If the ECM transmission and the ECM reception are inhibited, a V.34 transmission is not executed.)
However, the above-described conventional apparatus has a disadvantage that, if an execution of a polling communication is received in a state that an ECM transmit inhibition is selected while an ECM receive inhibition is not selected, after transmitting an ANSam signal, receiving a CM signal, transmitting a JM signal, and receiving a CI signal (after an execution of a V.8 protocol) and further after transmitting a line probing signal, transmitting a long training, and exchanging parameters (after an execution of a V.34 protocol), a communication is disconnected, thus causing a disabled polling transmission since a V.34 data transmission is an ECM transmission and the ECM transmission is inhibited.
SUMMARY OF THE INVENTION
Therefore it is an object of the present invention to provide a communication apparatus and its control method which assure an execution of a polling communication in a state that an ECM transmit inhibition is selected while an ECM receive inhibition is not selected for communications in the International Telecommunication Union-Telecommunication (ITU-T) Recommendation V.8, V.21, V.27ter, V.29, V.17, or V.34.


REFERENCES:
patent: 4729033 (1988-03-01), Yoshida
patent: 4814894 (1989-03-01), Yoshida
patent: 4829524 (1989-05-01), Yoshida
patent: 4885755 (1989-12-01), Yoshida
patent: 5031179 (1991-07-01), Yoshida et al.
patent: 5172246 (1992-12-01), Yoshida
patent: 5220439 (1993-06-01), Yoshida
patent: 5267052 (1993-11-01), Bannai et al.
patent: 5307179 (1994-04-01), Yoshida
patent: 5438427 (1995-08-01), Yoshida
patent: 5671270 (1997-09-01), Yoshida
patent: 5684606 (1997-11-01), Yoshida
patent: 5721731 (1998-02-01), Yoshida
patent: 5726765 (1998-03-01), Yoshida et al.
patent: 5748334 (1998-05-01), Yoshida
patent: 5748714 (1998-05-01), Yoshida
patent: 5890806 (1999-04-01), Yoshida
patent: 5943364 (1999-08-01), Yoshida

Affiliated with

Also associated with

Rating

Communication apparatus and its control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication apparatus and its control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication apparatus and its control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3160724