US Patent No: 4,825,461

Number of patents in Portfolio can not be more than 2000

Data communication apparatus for data and/or speech communication on a plurality of communication lines

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A communication apparatus includes a data communication unit; a speech communication unit; a connection unit for connecting to a plurality of lines; and a switching unit for selectively connecting the data communication unit and the speech communication unit to any one of the plurality of lines. Both speech and data communication units may be used concurrently. The communication apparatus further includes a memory unit for storing line information identifying a line different from another line in use for data communication or speech communication. An automatic calling to both speech and data communication units may be effected by a single calling operation by the operator.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CANON KABUSHIKI KAISHATOKYO49710

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kurita, Kenji Nagoya, JP 43 256
Matsumoto, Koichi Tokyo, JP 177 1171
Nakazawa, Toshihiko Hino, JP 23 426

Cited Art

Patent Info (Count) # Cites Year
 
BELL TELEPHONE LABORATORIES, INCORPORATED (2)
4,291,198 General-purpose electronic telephone station set 105 1979
4,291,200 Voice and data switching arrangement 36 1979
 
ASHER TECHNOLOGIES, INC. (1)
4,640,989 Communications unit for executive work station 35 1984
 
CYGNET TECHNOLOGIES, INC., (1)
4,578,537 Telecommunication apparatus serving as an interface between a digital computer and an analog communication medium 142 1983
 
PRENTICE CORPORATION (1)
4,596,021 Modem for switching between voice and data communications on a single telephone call 89 1984
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
4,530,288 Heated railway tank car 4 1984

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
CANON KABUSHIKI KAISHA (21)
5,222,126 Communication apparatus connected to other communication terminals 6 1988
4,947,423 Communication apparatus with facilities for changing to a pulse or dial mode 11 1988
5,128,985 Communication system having a plurality of voice communication terminals and a data communication terminal 18 1990
5,054,058 Telephone and telephone system having improved one-touch calling 13 1990
5,165,096 Image communication apparatus having communication with another communication apparatus and a shared communication line 8 1990
5,263,078 Mobile facsimile telecommunications system capable of automatically off-hooking a facsimile device 25 1991
5,317,629 Data communication apparatus connectable with a plurality of telephone sets and a telephone line 18 1991
5,101,427 Communication apparatus connected to ISDN 12 1991
5,239,576 Communication apparatus 17 1991
5,204,895 Data communicating apparatus which selects analog or digital communication in accordance with the destination number 25 1991
5,280,520 Apparatus for speed and data communication 10 1992
5,315,643 Communication system and data communication method 3 1993
5,428,672 Communication apparatus 1 1993
5,515,423 Two-line telephone controller 22 1993
5,428,673 Data communication apparatus having the function of automatically switching data communication and telephone communication 12 1993
5,610,975 Visual telephone apparatus 7 1994
5,960,065 Two-line telephone controller with hold feature 6 1996
5,850,251 Visual telephone apparatus 1 1996
6,346,995 Communication apparatus with outgoing call limiting 0 1997
5,854,830 Concurrent voice and data communication 18 1997
7,619,757 Image processing apparatus and control method thereof, processing module drive control method, and data processing apparatus 0 2005
 
MICROSOFT CORPORATION (3)
5,917,615 System and method for facsimile load balancing 42 1994
5,539,530 Facsimile machine with custom operational parameters 57 1994
5,438,433 System and method for facsimile cover page storage and use 87 1994
 
RICOH COMPANY, LTD. (3)
5,056,133 Data communication apparatus coupled to two telephone lines 7 1989
5,305,376 Facsimile machine with voice answer unit 4 1993
5,636,034 Data transmitting/receiving apparatus operating in a user-selected one of a line specifying mode and a free-line searching mode 7 1995
 
BRANDYWINE COMMUNICATIONS TECHNOLOGIES LLC (2)
5,719,922 Simultaneous voice/data answering machine 31 1997
6,236,717 Simultaneous voice/data answering machine 6 1998
 
FUJI XEROX CO., LTD. (2)
5,289,532 Facsimile apparatus providing facsimile transmission with forwardable voice communication 12 1991
5,392,339 Telephone transfer apparatus using a special signal for transfer in facsimile communication 1 1991
 
KABUSHIKI KAISHA TOSHIBA (2)
4,939,777 Terminal apparatus having a function for preventing unnecessary line connection 6 1989
5,297,146 Communication terminal apparatus and its control method 21 1992
 
CURRENT LOGIC SYSTEMS, INC. (SAN JOSE, CA) (1)
5,550,649 Multi-function telecommunications instrument 41 1992
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
6,021,182 Method and system for increasing the efficiency with which connections are made across a communication line 2 1997
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
5,818,608 Quick response facsimile apparatus 2 1995
 
NKO, INC. (1)
5,739,919 Point of presence (POP) for digital facsimile network 25 1996
 
PANASONIC COMMUNICATIONS CO., LTD. (1)
5,428,457 Image communication apparatus 7 1992
 
REUTERS LIMITED (1)
5,034,916 Fast contact conversational video system 49 1988
 
TAMURA ELECTRIC WORKS, LTD. (1)
5,027,385 Facsimile apparatus for communicating on external and internal telephone sets 12 1989