Telephonic communications – Reception of calling information at substation in wireline...
Reexamination Certificate
2000-10-19
2004-09-28
Tran, Quoc (Department: 2643)
Telephonic communications
Reception of calling information at substation in wireline...
C379S142070, C379S142160, C379S142170, C379S093170, C379S093230
Reexamination Certificate
active
06798872
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates a caller information display system and recording medium in a communication system that allows voice and data communication to be done simultaneously between multiple communication terminals.
2. Description of the Prior Art
The popularization of the Internet and intranets in recent years has brought with it a growing desire to unify voice information with IP (Internet protocol) information and carry on voice communication (telephone calls) via IP networks. The appearance of VoIP (Voice over IP) technology in response to this need has made it possible to conduct telephone calls via a LAN (Local Area Network) or the Internet using personal computers (PCs) as terminals. VoIP technology converts voice information into IP packets and makes it possible to conduct a telephone conversation over an IP network; IP address information can be obtained from the telephone number or other identifying information of the other party to the communication from a server known as a gatekeeper, and after going through a communication setup procedure with the other terminal, voice data can be transmitted and received directly by the other terminal, and one can conduct voice communication.
Because the voice information is converted into IP packets by VoIP technology, the conversation does not monopolize the communication circuit at all times, and as long as communication circuit bands are empty even during one voice communication, other calls can be received or made. For example, the communication speed when one carries out WWW access or other IP packet communication using a telephone circuit depends on the communication speed of the modem one uses. At present, one can communicate at a speed of up to 56 kbps per telephone circuit. In contrast to this, the band used in one VoIP call can be kept to about 10-20 kbps, thus allowing 2-4 calls to be made per telephone line. And there is a greater need than ever, when a telephone call comes in, to identify the other caller by having the telephone number or the caller's name and other caller information displayed on the receiving terminal before one responds to the incoming call, and various methods have been proposed.
FIG. 32
shows the composition of the previously known example 1, and
FIG. 33
shows the composition of the previously known example 2.
FIG. 32
shows an example of a previous system in which a database that collects and stores images or other such information on callers is provided, and displaying is done on a computer associated with each telephone set; this is disclosed, for example, in unexamined patent application H11-88496 [1999]. In
FIG. 32
,
80
is a subscriber line exchange,
81
is a caller number receiver,
82
is a caller information storage database provided for collecting and managing with respect to many telephone sets,
83
are telephone sets provided in large numbers, and
84
are PCs (personal computers) provided in correspondence with the telephone sets
83
. In this example 1, when a call comes to a telephone set
83
of subscriber line exchange
80
, and when the telephone number of the sending subscriber that is sent to subscriber line exchange
80
when the call arrives is received by caller number receiver
81
, the number is displayed on the display unit (not shown in the figure) and is sent to caller information storage database
82
. At the caller information storage database
82
, the data lookup unit searches the database using the sending subscriber's telephone number and transfers the looked-up data (an image or data concerning the sending subscriber) through the communication control unit to PC
84
, which corresponds to telephone set
83
where the incoming call occurred, and displays it on the display unit of PC
84
. Caller information storage database
82
, by specifying the name of the other party even if a call originates from one telephone set
83
, can be used, even if dialing is automated, by looking up the corresponding telephone number. At this time, the various information concerning the looked-up other party (including image data) can be displayed on the display unit of PC
84
, which corresponds to the telephone set
83
where the call originated.
FIG. 33
shows another previous system in which a database for caller information is built into a communication terminal that has telephone functions; this is described in, for example, unexamined patent application H6-121302 [1994]. In the diagram,
85
is a communication network having telephone exchange functions,
86
is a communication terminal having telephone functions, and
87
is a handset including a transmitter and receiver. Provided inside communication terminal
86
are a communication control unit
860
, a call circuit unit
861
, a caller number lookup unit
862
, a caller information database
863
, a display unit
864
for displaying caller information, and an input unit
865
for storing caller information.
In the case of the previous example 2 of the communication system as well, when a call comes in to communication terminal
86
, the caller information database
863
is searched using the caller number that is included in the incoming call information, previously stored information including an image of the caller is displayed on display unit
864
, and knowledge concerning the caller is provided before one responds. Also, by the composition of the previous communication system shown in
FIG. 33
, when a call is made from the communication terminal
86
, a still image previously stored in caller information database
863
or a moving picture of the caller can be transmitted to the call recipient in real time by using a camera as input unit
865
.
Also, VoIP (Voice over IP) technology has appeared, in which voice information such as the above is telephoned by a LAN (local area network), intranet, Internet, etc. with a personal computer (PC) as the terminal, making it possible to convert voice information into IP (the IP of TCP/IP: Internet protocol) packets and make a call over an IP network.
Specifications covering IP telephony by VoIP have been put forth by ITU-T (International Telecommunications Union, electrical communication standardization division) as H.323 (standards for audio and video communication on non-guarantee networks). These standard specifications cover encoding technology for converting analog audio to digital, packetization technology for putting encoded audio data into IP packets, and “call setup processing” technology for checking the other party's telephone number sent by a telephone set and determining the optimum route. In call setup processing, it is possible to obtain IP address information from the telephone number and other identifying information of the other party to the communication, go through a communication setup procedure with the other terminal, then transmit and receive voice data with the directly connected other terminal and carry on voice communication. The ITU-T has also recommended H.245 (control message protocol standards) and H.450 (standards for added services such as hold and transfer).
Problems which are Solved by the Present Invention
There are cases in which, although it is possible to convey caller information to the call recipient, one would want to have information about the caller without considering conveying information about the call recipient to the caller, for example if a call arrives at another call recipient by transfer or other means at the call recipient, but effecting this is difficult with the previous technology.
And if the caller information is to be updated, with the technology of the above-described previous example 2 the caller information is in each terminal, and each terminal operator must update the information, which has been quite troublesome. If one neglects to do the updating, the latest information is not displayed, so one is required to do updating work frequently.
Moreover, with the technology of the above-described previous example 1, becau
Matsumoto Masaharu
Yazawa Shigehiko
Fujitsu Limited
Katten Muchin Zavis & Rosenman
Tran Quoc
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