DE19900895C2 - Device and method for remote access to a target computer - Google Patents

Description

The invention relates to a method for remote access a target computer, as well as a central computer for Perform such a procedure.

It is known to use so-called unified messaging systems turn, d. H. Information such as faxes, emails etc. are sent to a special address or fax number of a unified sent messaging providers, there is for every customer a kind of virtual office. Every fax or email on the server of the provider of this service saved, such a fax or email then via the Internet, with an appropriate password from be accessed anywhere. The disadvantage of these systems is that every fax or email to the special address or The provider's fax number must be sent to everyone will provide this new email address or fax number, although most users already have an email address or Have a fax number. If a fax arrives, it will not be direct e.g. B. received and printed out in the user's office but at the provider of the service, there are some of them Notification and forwarding options, each however, a certain delay is usually unavoidable. In addition, however, one mostly needs outside the empire not only received faxes from your own computer and emails, mostly you need a specific file,  a table or database file d. H. it would be advantageous on the go to the complete computer or to be able to access its data as if it were this di operate right. For this problem are already Known solutions. So-called. ras (remote access systems) er possible complete access to a remote Com computer using z. B. a telephone connection, d. H. you choose e.g. B. by means of a mobile computer the remote Com computer and thus has a permanent connection to it Computer and can now all radio as in a network Control or monitor computer functions. Disadvantageous on the one hand, there is always a telephone connection the remote computer must exist, z. B. from abroad to Germany cause very high costs; on the other hand, the computer has to move from the remote one Computer should be accessed using the appropriate soft have installed goods and with a telephone or Mon bilfunknetz be connected. And not always B. a mobile computer with appropriate software available.

In the document DE 196 45 006 A1 a method is of in which from a remote computer a target computer is accessed. This will be done first an internet connection from the remote computer a central computer (there: an Internet router) built. The central computer then disconnects the target computer by sending the request under Ver application of the TCP / IP protocol over the Internet to the Forward target computer, d. H. a TCP / IP Sends Internet call signal to the target computer.

In addition, client-server-oriented X11 Network applications generally known Data changes immediately back over the network wear. For example, in DE 195 22 185 A1 described a system in which a main com computer is connected to a terminal via the Internet.  

It will run an On on the main computer Application program computer-remote on a graphic loading user interface shown at the terminal, and about the Terminal controlled. This allows data on the main computer be changed. The changed data become immediate transmitted back to the terminal via the network.

DE 198 08 616 A1 describes a method and a system for remote control of devices, especially cameras known in which for switching an information ka nals from a user terminal over the Internet Server is addressed, which in turn a choice connection via a public communication network to one of the cameras.

A mail system is described in US Pat. No. 5,850,519 which one dialer connected to a host computer automatically the telephone number of a receiving unit selects when a new one intended for the receiving unit Mail arrives.

No. 5,764,639 is a remote access method known, being from a remote computer over a central computer to a target computer is gripped. To establish the connection between ent remote computer and target computer is from the central Com computer sent a call signal to the target computer, in who dials his phone number.

In the PROCESS-INFORMATIK publication: "Plant maintenance worldwide by phone "company lettering from 1.12.1998 is a Remote maintenance system described, in which a PC devices to be serviced are accessed. Doing so chooses a central station connected to the PC the telephonnum another central station that has to wait with that the device is connected.  

In the publication NATIONAL SEMICONDUCTOR: "" System-on-a-chip "for remote management of networked PCs" in electronics industry 8-1998 , pages 60-61 describes a call signal to a distant who is in a sleep mode to send the computer and put it into a working mode in response to the ringing signal.

From the InterMAC publication: "Nothing for globetrotters" in iee 9/1998, pages 56-57, is a tele- Monitoring / diagnostic system known, in which the operating and visualization software in the form of dynamic HTML Pages and Java applets centrally on the respective measurement Analysis and control system of the system to be monitored is saved. When connecting, the HTML pages then automatically into the browser of the user Loaded and executed there.

The invention has for its object a novel Procedures for remote access to a target computer, as well a new type of central computer to perform a to create such a process. This task will by the invention defined in claims 1 and 8 solved. Advantageous further developments and designs gene of the invention are described in the subclaims ben.

In principle, the invention is that of one ent computers by an Internet user connection to a central computer of the user builds, and this then connecting to a target com puter triggers, whereby the data of the target computer by Control signals of the remote computer are changed, while the changed data is being transferred.

The central is used to trigger the connection Computer sends a phone call signal over a phone line sent the target computer. The changed data will become  transferred to the central computer and stored there. A display already appears in the course of the data change changed data on the remote computer shown website.

It is beneficial if the target computer responds to the call signal connects to the central computer provides, especially by taking off at a distance corresponding device.

It is also beneficial if the target computer is responding another on the call signal from the central computer Sends call signal to the central computer, which in Re action on the further call signal the connection to Manufactures target computer, in particular by taking off corresponding procedure for the telephone set.

It is also advantageous if before triggering the Connect the central computer to the target computer in Response to the Internet connection being established by the central computer a password from the remote computer to central computer must be transmitted.

Furthermore, it is advantageous if after the transmission the password for each triggering the connection one only single-use transaction number from the remote Com computer must be transmitted to the central computer. This Transaction number is a randomly generated digit combination, which z. B. generated by the central computer and transmitted to the user, and only for one Connect can be used and thus the security continues can increase.

Another advantage is if the target computer in Re action on the call signal is switched on.  

It is also advantageous if selected files of the Target computers are transferred to the remote computer can.

In order to explain the invention in more detail, is the following described an embodiment. It shows:

Fig. 1 is a block diagram of a system for implementing the method according to the invention.

In Fig. 1, a block diagram is shown, the blocks of which represent useful facilities for carrying out the method steps.

Block 1 symbolizes a remote computer (1) which, via the displayed on the remote computer (1) Internet side of a central computer (2), via an Internet connection directly connects to the central Com puter (2) to build. The central computer ( 2 ) can carry out security checks via the Internet page of the central computer ( 2 ) shown on the remote computer ( 1 ) by means of a user name and / or password query in order to control access. After access has been granted, the central computer ( 2 ) connected to a telephone network triggers a telephone connection via a central modem ( 3 ) and dials the telephone number of the target computer ( 5 ) which is also connected to this network, and this can now Establish the connection directly by accepting the telephone connection initiated by the central computer via a modem ( 4 ) or in turn initiating a telephone connection to the central computer ( 2 ) after receiving the ringing signal from the central computer ( 2 ), in which he uses the modem ( 4 ) dials the telephone number of the central computer ( 2 ) and this establishes the connection by taking the call signal from the target computer ( 5 ). Now all control signals from the input devices such. B. a mouse ( 11 ) of the remote computer ( 1 ) and a keyboard ( 6 ) of the remote computer ( 1 ) via the Internet connection to the central computer ( 2 ) and from there via the telephone connection by means of the central modem ( 3 ) and the modem ( 4 ) to the target computer ( 5 ). The image data displayed on a monitor ( 7 ) of the target computer ( 5 ) are continuously transmitted by the target computer ( 5 ) via the modem ( 4 ), at the latest after a change or after a predetermined time interval after a change, or after a predetermined number of changes the telephone connection via the central modem ( 3 ) to the central computer ( 2 ) and finally to the remote computer ( 1 ). The same data is displayed on the website displayed on the remote computer ( 1 ) as on the monitor ( 7 ) of the target computer ( 5 ). Unrestricted control of the target computer ( 5 ) is thus possible from the remote computer ( 1 ). That is, From the remote computer ( 1 ) the mouse arrow displayed on the monitor ( 7 ) of the target computer ( 5 ) can be controlled by moving the mouse of the remote computer ( 11 ). The movement of the mouse arrow shown on the monitor of the target computer ( 7 ), or the data that changes as a result, are transmitted immediately after the start of the mouse movement, that is to say after the smallest change in the data displayed on the screen, who is going to the remote computer ( 1 ) transferred and displayed there. This enables full control of the target computer ( 5 ); for example, a document can be created in the target computer ( 5 ), which is entered on the keyboard of the remote computer ( 1 ). Furthermore, it is possible to specifically access individual files of the target computer ( 5 ) and transfer them to the remote computer ( 1 ). B. from the hard disk of the target computer ( 5 ) is loaded and the data of the file by means of the modem ( 4 ) via the telephone connection and the central modem ( 3 ) to the central computer ( 2 ) and either stored there (for later retrieval) is transmitted or via the internet connection to the remote computer ( 1 ) and can be stored or edited there, for example. In addition, after the connection between the central computer ( 2 ) and the target computer ( 5 ) starts in the central computer ( 2 ), a time counter (not shown) begins to run until the connection is interrupted again. The time counter data are also stored in the central computer ( 2 ) and, if necessary, transmitted to the remote computer ( 1 ) and displayed there.

Claims (8)

1. A method for remote access to a target computer ( 5 ), which has the steps:

• a) establishing an Internet connection from a remote computer ( 1 ) to a central computer ( 2 );
• b) triggering a connection of the central computer ( 2 ) to the target computer ( 5 ) in response to the establishment of the Internet connection by the central computer ( 2 ) sending a ring signal to the target computer ( 5 ) by dialing the telephone number thereof;
• c) changing data on the target computer ( 5 ) in response to control signals received from the remote computer ( 1 );
• d) transferring the changed data to the central computer ( 2 );
• e) storing the transmitted data on the central computer ( 2 );
• f) Displaying the changed data on the website displayed on the remote computer ( 5 ) already in the course of the change.

2. The method according to claim 1, wherein the target computer ( 5 ) in response to the call signal establishes the connection to the central computer ( 2 ), in particular by one of the lifting at the telephone set correspond to the process. 3. The method according to claim 1, wherein the target computer ( 5 ) in response to the call signal sends a further call signal to the central computer ( 2 ), which establishes the connection to the target computer ( 5 ) in response to the further call signal, in particular by a picking up the telephone corresponds to the process. 4. The method according to any one of the preceding claims, wherein before step b) a password from the remote computer ( 1 ) to the central computer ( 2 ) must be transmitted. 5. The method according to claim 4, wherein after the transmission of the password for each triggering of the connection, a transaction number that can only be used once must be transmitted from the remote computer ( 1 ) to the central computer ( 2 ). 6. The method according to any one of claims 1 to 5, wherein the target computer ( 5 ) is turned on in response to the ringing signal. 7. The method according to any one of the preceding claims, wherein selected files of the target computer ( 5 ) to the remote computer ( 1 ) are transmitted. 8. Central computer ( 2 ) for performing the method according to one of the claims 1-7.