WO2000035147A2 - Method and system for controlling remote digital sources from a work station - Google Patents
Method and system for controlling remote digital sources from a work station Download PDFInfo
- Publication number
- WO2000035147A2 WO2000035147A2 PCT/FR1999/003069 FR9903069W WO0035147A2 WO 2000035147 A2 WO2000035147 A2 WO 2000035147A2 FR 9903069 W FR9903069 W FR 9903069W WO 0035147 A2 WO0035147 A2 WO 0035147A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- digital sources
- pti
- transmission
- sources
- digital
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
- G06F3/0231—Cordless keyboards
Definitions
- the present invention relates to a method for controlling remote digital sources from a networked workstation or from a console simply consisting of a monitor, a keyboard and a mouse. It also relates to a system implementing this process.
- Any conventional connection to the Internet currently allows, in one way or another, amateur or professional hackers (hackers) to penetrate, without authorization and without their knowledge, the resources of a user's microcomputer and those of the network to which he himself has access.
- Such playful or hostile intrusions make it possible to immediately or temporarily punctuate data, pollute or sabotage the computer or the targeted network.
- firewalls Many technical solutions have already been developed and marketed in order to protect users of external networks by specific means: firewalls, increasingly complex passwords, data encryption ...
- the protections currently offered are generally ephemeral, decryptable in the short or medium term. Indeed, we are witnessing in this matter an incessant struggle of the intelligence of protectors against the ingenuity of hackers which obliges as in the case of antivirus software to permanent upgrades without guaranteeing total security.
- the aim of the present invention is to remedy these drawbacks by proposing a method for controlling remote digital sources which can provide a level of protection against intrusion never reached with current control methods, while offering users better comfort. use only with the current method using a television set.
- This objective is achieved with a method for controlling digital sources from a workstation remote from said digital sources, comprising: a transmission of commands and control data coming from the workstation to the remote digital sources,
- the commands and piloting data are entered from the work station on an infrared keyboard, converted into infrared codes and then transmitted by wire to said digital sources, and the information coming from said digital sources are transmitted by wire under the form of signals corresponding to a VGA type communication protocol capable of being directly applied to a computer screen of said workstation.
- This method further comprises, at the level of the digital sources, a conversion of the infrared codes and control data in the form of control signals able to be processed by said digital sources.
- the VGA type signals are transmitted over a transmission cable comprising four pairs of conductors, three first pairs each carrying an R, G or B signal and a fourth pair carrying a multiplex line synchronization signal and a synchronization signal weft.
- the infrared codes and the control data coming from the work station are advantageously transmitted over the fourth pair of the transmission cable.
- control method further comprises a transmission of audio signals from digital sources to the work station.
- the audio signals are advantageously transmitted over the fourth pair of the transmission cable.
- piloting method according to the invention is implemented for controlling digital sources from a set of workstations located in a site remote from a resource site including digital sources
- network of workstations according to a star-type structure comprising a headend located on the resource site, each workstation being connected via a four-pair transmission cable to a cabling system forming part of the headend.
- control method according to the invention furthermore comprises management of communications between each work station and each digital source.
- a system for controlling remote digital sources from a workstation remote from said digital sources, implementing the method according to the invention, this system comprising:
- the input means comprise an infrared keyboard and the first transmission means are arranged to transmit by wire the control commands and data in the form of infrared codes, and the second transmission means are arranged to transmit by wire information from digital sources in the form of signals corresponding to a VGA type communication protocol and capable of being directly applied to a computer screen fitted to the workstation.
- control system further comprises, at the level of the digital sources, means for processing and converting the control commands and data coming from the work station in the form of infrared codes into control signals able to be processed by said digital sources.
- the workstation is in particular linked to digital sources by a transmission cable comprising four pairs of conductors, three first pairs each carrying an R, G or B signal and a fourth pair carrying a multiplex line synchronization signal and a signal frame synchronization.
- the first transmission means are preferably arranged to transmit the infrared codes and the control data on the fourth pair of the transmission cable and the system further comprises, at the level of the digital sources, means for taking the said codes from the fourth pair. infrared and control data and apply them to the processing and conversion means.
- control system further comprises, at the workstation, means for selectively connecting the computer screen either to a local central unit (local mode), or to the communication cable.
- local mode a local central unit
- remote digital sources remote digital sources
- the work station is for example provided with a terminal device comprising the first transmission means, the selective connection means and infrared receiver means cooperating with the infrared keyboard.
- the second transmission means are also preferably arranged to transmit audio signals on the fourth pair of the transmission cable, and the terminal device further comprises means for extracting these audio signals and applying them to acoustic amplification means.
- the selective connection means are also arranged to establish: either a link between the infrared keyboard and the local central unit, when said selective connection means are controlled in local mode,
- control system further comprises a first keyboard / mouse interface device disposed between, on the one hand, the keyboard and mouse input ports, and, on the other hand, the terminal device.
- each workstation is provided with a terminal device connected by means of a transmission cable to a common cabling system located on the remote site and acting as a network head, this common cabling system being connected to a switching matrix cooperating with the second transmission means and connected to the various digital sources.
- At least one digital source comprises a central unit
- a second keyboard / mouse interface device disposed between the second transmission means and the keyboard and mouse input ports of this unit. central.
- At least one of the digital sources can be connected to the Internet.
- the innovation thus consists in replacing the television set or video monitor normally used in current Internet access systems via a video network, by a computer screen (VGA, SVGA, etc.) and in allow the user to control from this screen, the quality of which will be identical to that of a traditional computer station, computers not connected to the internal network from their workstation and with a keyboard / mouse allowing communication by means of codes infrared and data.
- This method makes it possible to resolve the problem posed without appreciably modifying the protected computer network and while allowing instant connection to external networks deemed to be hostile.
- Workstations are conventionally used for normal network applications. They can use a conventional keyboard and mouse connected by wire, but we can also foresee that they work with an infrared keyboard / mouse / track-ball. The communication then takes place simply through a receiver placed on the desk and connected to the mouse and keyboard ports of the central unit. This second solution avoids the obligation to have two keyboards and two mice on the desk.
- a keyboard / mouse connected directly to the terminal device of the control system according to the invention and generating directly by local switching, either the signals intended for the central unit connected to the network, or the infrared codes. for remote connection to the Internet.
- the keyboard is a conventional keyboard
- a second keyboard emitting infrared codes replaces the traditional keyboard during connection with the outside. The user thus remotely controls the computer, or one of the computers, connected to the Internet. He can view the information collected on his screen and does not risk intrusion either on the hard drive of his workstation or in network files.
- the four pairs used are isolated from that of the Ethernet® network, which has not been used since the terminal box uses neither the same pairs nor the same communication protocol (RGB) as the general network of the company or the establishment.
- Source management software will allow you to assign a computer to a person or a work group.
- FIG. 1 is a block diagram of an exemplary embodiment of a control system according to the invention in a single station version
- FIG. 2 is a block diagram illustrating the main functionalities of a terminal device implemented in a control system according to the invention
- FIG. 3 is a block diagram illustrating the main functionalities of a transmission arrangement located in the resource site.
- FIG. 4 illustrates a double network structure implemented in a control system according to
- This system So comprises, at a computer workstation PT located in a local site SL and comprising a central unit UC1 and a computer screen El, a terminal device TA connected at A to the output VGA of the central unit UC1 , in B at the VGA input of the screen El, in C to a CCI socket of RJ45 type connected to a CL connection cable with 4 twisted pairs, in D to an interface device II connected to the "mouse" port and to the "keyboard" port of the central unit UC1, and at E to an amplified loudspeaker HP.
- the terminal device TA is furthermore provided with an infrared receiver IR for receiving data and commands transmitted by an infrared keyboard CI and a switch S for selecting either a local mode of use of the work station, or a remote mode in which the screen El is no longer connected to the central unit UC1 but is used in the context of controlling a remote digital source comprising a central unit UC2.
- the control system So further comprises, at a remote site SR, a cabling system CA to which connection cables CL are connected, a switching matrix MC cooperating with a transmission device CT designed to transmit on a connection cable CL both VGA signals transmitted by one and receive on the fourth pair of this connection cable DATA data intended to drive via an interface device 12 the central unit UC2 which is connected via a CC2 connection socket to an ISDN line providing access to the Internet.
- This implementation requires only 4 pairs per station corresponding to the wiring of a standard RJ45 socket, and an RGB switching matrix placed at the head of the network and sized according to the number of stations connected and the number of external accesses (sources). .
- the switching matrix thus carries an RGB signal from the computer's VGA socket on four pairs (one for each RGB signal and one for the line sync + frame sync + audio + infrared control multiplex signal).
- the terminal device TA produced in practice in the form of a reduced-size box placed in the immediate vicinity of the central unit UC1, comprises a module CS for switching or selective connection receiving on the one hand the VGA signals S (l) from the central unit UC1 and on the other hand the VGA signals S (2) coming from a remote digital source and transported on the connection cable CL, and generating as output VGA signals coming from the selected input and applied as input to the computer screen El.
- This module CS switch is controlled by a switch S which can be mechanical or electronic.
- This switch thus controls a switch CP of the commands and data entered on the infrared keyboard CI and received by the receiver module RU which are routed either to the “keyboard” and “mouse” ports PKI, PMI of the central unit UC1 via a device. interface II, or to the remote digital source via the fourth twisted pair P4 of the connection cable CL.
- the signals transported on the connection cable CL are processed in a transmission module TR within the terminal device TA.
- the RGB signals transported on the first three pairs Pl-3 of the link cable CL and the multiplexing and line synchronization signals transported on the fourth pair P4 are received, possibly processed and filtered then directed to the routing module CS, while the control data is injected on the fourth pair P4 to be transmitted to the remote digital source.
- a transmission device CT produced in practice in the form of a card inserted in a tray of a switching matrix MC, comprises:
- an SD module for taking from the fourth pair P4 of the connection cable CL data D1, .., D4 for controlling via keyboard / mouse interfaces II, .., 14 of the central units UC21, .. UC24 of digital sources,
- a multiplexing module UM receiving as input the VGA signals SG (1), .., SG () generated respectively by the graphics cards CG21, .., CG24 of the central units UC21, .., UC24, and - a microprocessor or ⁇ C microcontroller programmed to manage all the functions of the CT transmission device.
- the microcontroller has in particular the function of controlling the multiplexing module UM which makes it possible to select from the remote workstation a particular digital source from a set of digital sources connected to the transmission device CT. It also pilots the pilot data collection module to direct them to the appropriate keyboard / mouse interface device.
- Each keyboard / mouse interface device 121, .., 124 has the function of supplying the input ports "mouse” PM21, .., PM24 and "keyboard" PK21, .., PK24 of the central unit UC21, .., UC24 to which the control signals necessary for controlling this central unit are connected.
- the central units UC21, .., UC24 of digital sources are in practice connected via communication lines (ISDN, PSTN or specialized) to networks communication such as the Internet.
- the microcontroller ⁇ C of the CT transmission device can be connected via an asynchronous reception / transmission unit UA and an asynchronous serial link of RS 485 type to a supervisor ensuring the remote management of the CT transmission device, with in particular authorization functions or prohibition, and programming of multimedia sources.
- a control system S according to the invention is particularly suitable for providing a set of workstations connected in the local network with secure Internet access preventing any external intrusion into the workstations or on the local network, as illustrated in the figure. 4.
- a control system S according to the invention implemented in a multi-station context on a local site SL, comprises, for each work station PTI, PTi, PTN normally connected to a local computer network RL, a terminal box TA1, TAi, TAN installed in the manner described above with reference to FIG. 2 and connected via a connection cable CL1, CLi, CLN to a second network RV completely independent of the local computer network RL.
- This second network RV comprises a network head located on the remote site SR and comprising a cabling system, a switching matrix MC and transmission devices CT connected to central units UC21, .., UC2K connected for some of them them to communication networks and provided with interface devices 12 receiving control data coming from the PTI, PTi, PTN workstations.
- Each PTI, PTi, PTN workstation includes a local central unit UC11, UCli, UC1N, an infrared keyboard Cil, Cli, CIN, a computer screen El, Ei, EN and an interface device 111, Ili, UN provided for transmitting to the local central unit the commands entered on the infrared keyboard.
- An operator using the PTi workstation usually works on the local computer network RL to exchange data with other workstations and have access to common local resources. He wishes to access a remote digital source external to the local site SL, for example to a server connected to the Internet and accessible from a remote central unit UC21.
- the operator then sees the graphical environment generated by the remote central unit UC21 appear on his screen Ei.
- the connection cable CLi carries both the DATA control data from the terminal unit TAi to the remote central unit UC21 via the transmission card CT, and the VGA signals generated by the remote central unit UC21 to the computer screen Eli via the TAi terminal box.
- the local computer network RL and the local central unit UCli are physically decoupled from the second network RV and it is then completely impossible to access from the outside via the remote central unit UC21 inside the computer resources present in the local site SL.
- the transmission card In a concrete example of embodiment of a control system according to the invention, the transmission card
- CT is carried out according to the double Europe standard and is inserted in a tray of a switching matrix manufactured and marketed by the present depositor.
- This transmission card is used to interface: - several RVBS VGA sources in multiples of 4, DATA outputs allow consultation of digital sources.
- Transmission is ensured by four non-polarized pairs and includes an automatic compensation device for line length in connection with the terminal box TA.
- the invention is not limited to the examples which have just been described and numerous modifications can be made to these examples without departing from the scope of the invention.
- the work station comprises both a conventional keyboard connected by wire to the central unit local and an infrared keyboard dedicated to control remote digital sources.
- control system makes it possible to transmit on the connection cable, in addition to the commands and data required for the control of the remote digital sources, any type of information intended for these remote digital sources.
- the infrared transmission technology currently constitutes an optimum for producing the keyboards used in a control system according to the invention
- any other technology for transmitting data and commands between the keyboard and the terminal box equipping a work station also comes within the scope of the present invention.
- an extension of the system according to the invention would consist in replacing the infrared keyboard with a conventional keyboard / mouse assembly connected by wire.
- the codes of this keyboard could be transcoded through a proprietary protocol, then transported after multiplexing in analog form to a remote station, where they would be decoded in a language understandable by it.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU15681/00A AU1568100A (en) | 1998-12-09 | 1999-12-09 | Method and system for controlling remote digital sources from a work station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815547A FR2787266B1 (en) | 1998-12-09 | 1998-12-09 | METHOD AND SYSTEM FOR DRIVING REMOTE DIGITAL SOURCES FROM A WORKSTATION |
FR98/15547 | 1998-12-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000035147A2 true WO2000035147A2 (en) | 2000-06-15 |
WO2000035147A3 WO2000035147A3 (en) | 2000-08-10 |
Family
ID=9533773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/003069 WO2000035147A2 (en) | 1998-12-09 | 1999-12-09 | Method and system for controlling remote digital sources from a work station |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1568100A (en) |
FR (1) | FR2787266B1 (en) |
WO (1) | WO2000035147A2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5787259A (en) * | 1996-03-29 | 1998-07-28 | Microsoft Corporation | Digital interconnects of a PC with consumer electronics devices |
US5790201A (en) * | 1996-08-08 | 1998-08-04 | Antos; Jeffrey David | Television and computer capability integration |
-
1998
- 1998-12-09 FR FR9815547A patent/FR2787266B1/en not_active Expired - Fee Related
-
1999
- 1999-12-09 AU AU15681/00A patent/AU1568100A/en not_active Abandoned
- 1999-12-09 WO PCT/FR1999/003069 patent/WO2000035147A2/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5787259A (en) * | 1996-03-29 | 1998-07-28 | Microsoft Corporation | Digital interconnects of a PC with consumer electronics devices |
US5790201A (en) * | 1996-08-08 | 1998-08-04 | Antos; Jeffrey David | Television and computer capability integration |
Also Published As
Publication number | Publication date |
---|---|
AU1568100A (en) | 2000-06-26 |
WO2000035147A3 (en) | 2000-08-10 |
FR2787266A1 (en) | 2000-06-16 |
FR2787266B1 (en) | 2001-03-02 |
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