Electrical computers and digital processing systems: multicomput – Remote data accessing – Accessing a remote server
Reexamination Certificate
1998-03-18
2001-06-19
Dinh, Dung C. (Department: 2754)
Electrical computers and digital processing systems: multicomput
Remote data accessing
Accessing a remote server
C709S221000
Reexamination Certificate
active
06249811
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a method of establishing a session between terminals utilizing a network which allows resources of remote terminals to be utilized, a remote terminal and a recording medium.
With recent popularization of internet, the internet connection function has been installed as a standard on an OS for a workstation and a PC (personal computer) such as OS/2 of IBM and Windows of Microsoft. On the other hand, the protocol which consumers and small scale users utilize in connecting to the internet is a terminal type dial up called PPP in which a terminal can not be connected to the internet unless a phone call is made from the terminal to the connection point of a network provider.
It is therefore necessary for a terminal to which a session is established to stay in a state in which it is connected to the network in order to establish a session from a terminal connected to the internet to another terminal via the internet. In other words, only the terminal placed in front of a user can dynamically connect to or disconnect from the network on demand and, for example, a resource of a PC system placed in home can not be utilized from a terminal which a consumer carries along as a mobile unit.
In view of recent popularization of PCs and an environment in which each person fully makes use of a plurality of mobile and desk top systems, it is considered that a demand of using resources of a remote desk top system from a mobile system is going to increase. As an alternative of the above, it could be conceivable to have a remote system stay always in connection to the network through a leased line or to call a modem of the remote terminal from a modem of the mobile terminal. However, the former would result in an expensive fee to be paid to a network provider so that it fails to meet consumers requirement while, in the latter, the telephone fee to be paid to the network provider such as NTT (Nippon Telephone and Telegraph) depends on the distance so that a long distance communication would invite an increase of a communication cost.
It is therefore a purpose of this invention to provide a method of establishing a session between terminals utilizing a network, a remote terminal, a local terminal and a recording medium which resolve the above described problems.
SUMMARY OF THE INVENTION
To achieve the above objectives, an aspect of this invention is characterized by; connecting from a local terminal having a remote terminal connection information to a first access point existing on a network to receive a local terminal identification information, calling a remote terminal from a server existing on said network based on said remote terminal identification information to send information including said local terminal identification information to said remote terminal, connecting to a second access point existing on said network by a daemon on said remote terminal which is started based on said transmitted information to receive the remote terminal identification information, and transmitting the received remote terminal identification information to the local terminal based on said local terminal identification information.
In the above, the information from said local terminal may include information including said local terminal identification information, authentication information for utilizing the function of said server and authentication information for utilizing the daemon function on said remote terminal.
Further, the daemon on said remote terminal can be started by detecting that the transmitted information including the local terminal identification information is abnormally short.
Further, connection of said remote terminal to said network can be maintained by said daemon while a connection maintenance instruction is periodically transmitted from said local terminal through said network after said remote terminal identification information has been transmitted to said local terminal.
Another aspect of this invention is characterized by the provision of; means for detecting whether or not the information including a local terminal identification information transmitted over a network matches a predetermined condition, and session establishing means started upon detecting that the information including a local terminal identification information matches a predetermined condition for executing a connection to an access point existing on said network to receive a remote terminal identification information and sending the received remote terminal identification information to a local terminal based on said local terminal identification information.
In the above, said session establishing means can maintain the connection to said network while the connection maintenance instructions are periodically transmitted over said network after said session establishing means has sent out said remote terminal identification information.
A further aspect of this invention is characterized by a recording medium which records therein a control program for establishing a session between terminals utilizing a network, said control program causing a computer to detect whether or not the information including a local terminal identification information transmitted over a network matches a predetermined condition, and to establish a connection to an access point existing on said network upon detecting that the information including a local terminal identification information matches a predetermined condition and to send the remote terminal identification information received from said access point to a local terminal based on said local terminal identification information.
In the above, said control program can cause the computer to maintain the connection to said network while a connection maintenance instruction is periodically transmitted through said network after said remote terminal identification information has been sent out.
A further aspect of this invention is characterized by the provision of; means for executing connection to an access point existing on a network, means for receiving a local terminal identification information from the connected access point, and means for sending out information including the received local terminal identification information and remote terminal identification information to said remote terminal over the network.
A further aspect of this invention is characterized by a recording medium which records therein a control program for establishing a session between terminals utilizing a network, said control program causing a computer to establish connection to an access point existing on a network, to receive local terminal identification information from said connected access point, and send out information including the received local terminal identification information and remote terminal identification information to said remote terminal over the network.
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W.Richard Stevens, TCP/IP Illustrated vol. 1: the Protocols. Addison-Wesley Professional Computing Series, 1994.
Dinh Dung C.
International Business Machines Corp.
Kupstas Tod
Myers Bigel Sibley & Sajovec P.A.
Ray-Yarletts Jeanine S.
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