CN2528062Y - Network graphic terminal computer based on Windows - Google Patents

Abstract

Disclosed is a network graph terminal computer which is connected with a server through network and is used for receiving user interface that the server transfers from the network, and returns information input by a keyboard or a mouse to be processed by the server. The utility model comprises: a CPU, which is used for providing memory management and a memory interface, and supports a WinCE and a Linux operating systems; a south bridge, which is used for providing ISA and PCI bus interfaces and a display interface, and is connected with the CPU through a PCI bus and a system video line; a network card chip of the PCI bus, which is connected with the CPU; a multi function interface, through which the needed serial interface, parallel interface, keyboard interface and mouse interface are hitched to an ISA bus of a graphic companion chip; a clock circuit. All the installation, configuration, operation, communication and data memory of software are finished at the server side. The utility model only is used as an input and output equipment, and uses an application program from the server directly without system compatibility problem, which uses server resource and processing ability thoroughly so that the system has great advantages in total cost, manageability, maintenance, safety and anti virus ability. The utility model has the advantages of great PC function, and also avoids the problems that a traditional PC terminal is in high cost and resource wasting, which is the best choice for commercial users.

Description

A kind of network graphic terminating machine based on Windows

Technical field

The utility model relates to the network client terminal technology, specifically is a kind of network graphic terminal device based on Windows.

Background technology

In the network host-guest architecture that uses at present, some terminating machines are connected with server, and its terminating machine adopts PC more.Each PC all is provided with the floppy disk of read-write memory RAM, read only memory ROM, network controller, install software and CD etc.The PC function is too many, and upgrading is fast, and volume is big, the cost height; The floppy disk of install software and CD become the approach of poisoning intrusion; The inner the most troublesome mechanical parts such as hard disk, floppy drive and fan that are provided with directly influence the functional reliability of complete machine.

According to incompletely statistics, the updating speed of CPU has almost reached the speed of every month 50 ~ 100MHz in nearly half a year.At present, the Athlon processor of 1000MHz has begun retail.Just think, have how many microcomputers individual, that the user really needs the workstation level? for commercial users such as vast bank, security, PC too much, too strong function, be a kind of waste in fact.Most of enterprises purchase PC, only also just for wherein one or several application.In a word, the high and wasting of resources problem of conventional P C machine terminal ubiquity cost.

Summary of the invention

The purpose of this utility model is to overcome the prior art above shortcomings, a kind of network graphic terminating machine based on Windows is provided, with some terminating machines of the present utility model and server networking, can give full play to the software and hardware resources advantage of server, reduce system cost, improve the safety in operation of system.

Network graphic terminating machine (Windows-BasedTerminal based on Windows of the present utility model, WBT), be connected with server, be used for the user interface that reception server transmits from network by network, return input informations such as keyboard and mouse for server process, it is characterized in that comprising:

A CPU (central processing unit) (CPU) is used to provide storage management and memory interface, supports systems such as WinCE and Linux operation;

A South Bridge chip (figure companion chip) is used to provide ISA and pci bus interface, and CRT and TFT display interface are provided, and is connected in CPU (central processing unit) by pci bus and system video line (SYSTEM VIDEO);

A network card chip that is connected in the CPU (central processing unit) pci bus;

A versatile interface is articulated on the South Bridge chip isa bus by serial line interface, parallel port interface, keyboard interface and the mouse interface of versatile interface with needs; And clock circuit, all clock signals that provide system required are provided.

(Windows-Based Terminal WBT) is based on the terminal device of Windows to the present networks graphic terminal, is the new generation network client product under MS supports energetically.It is connected with server by network, and all software installations, configuration, operation, communication, data storage etc. are all finished at server end, WBT the equipment as input and output.It makes full use of server resource and there is powerful advantages in the processing power system that makes in many-sides such as total cost, manageability, maintainability, security, investment continuity, upgrade cost, anti-virus abilities.It had both possessed the powerful advantage of PC, had abandoned problems such as the high and wasting of resources problem of the cost of conventional P C machine terminal again, was commercial user's optimal selection.

Under the network environment based on LAN and WAN, this WBT terminating machine has following characteristics on the function basis that replaces PC:

Security: owing to there is not mobile memory medium,, stopped the approach of poisoning intrusion, guaranteed data security simultaneously, illegally do not stolen as floppy disk and CD.

Managerial: owing to adopt centralized management, the application configuration of software upgrading, safety and visit are all finished on server, and terminal is directly used application program from terminal SERVER, does not have the system compatible problem, can not be eliminated, needn't give each client install software because of out-of-date.

High efficiency: transmission over networks have only mouse, keyboard and demonstration change information, alleviated network load greatly, improved the service efficiency of network; The WBT switching on and shutting down are rapid.

Safeguard: WBT inside does not have the most troublesome mechanical parts such as hard disk, floppy drive, fan, thereby needs hardly it is safeguarded.

Upgrading: because the operation of all application programs and storage are all carried out at server, WBT itself does not need upgrading.

Low-cost: the total cost of ownership of WBT is minimum in Desktop Product.The WBT volume is small and exquisite, and can and indicator integral.The user drops into lowest limit can allow the low-grade machine in no dish station easily stride into: WINDOWS 2000 terminals.

Description of drawings

Fig. 1 is the utility model network graphic terminating machine one example structure synoptic diagram;

Fig. 2 is the hardware structure diagram of the utility model network graphic terminating machine;

Fig. 3 is the software system structure figure of the utility model network graphic terminating machine;

Fig. 4 is its RDP process flow diagram;

Fig. 5 is the hypotactic a kind of network system synoptic diagram that contains the present networks terminals graphic.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

WBT UC series terminal shown in the figure l, 2 to be the utility model develop based on the Geode series information household electrical appliances CPU GXl of a new generation of National Semiconductor the 4th generation thin client.

Fig. 1 a is the front elevation of terminating machine, and Fig. 1 b is its rear view.The diagram each several part is: miniature cabinet l, power switch 2, pilot lamp 3, USB interface 4, keyboard interface 5, mouse interface 6, serial line interface 7, printing interface 8, outlet 9, display interface device 10, network interface 11, tone frequency channel wire socket 12, receiver J-Horner 13 and Microphone 14.

As shown in Figure 2, this terminal has adopted advanced 3P (Price, Performance and Power) optimisation technique, CPU supports that frequency is 200-333MHz, and carry storage management and memory interface (that is to say CPU integrated the function of north bridge), its maximum memory addressing range is 512M, the CPU framework is 32 X 86 processors of standard, support operating systems such as WinCE and Linux, under the support of high-performance server and broadband network transmission, its travelling speed and Pentium series maintain an equal level, and complete machine is in power consumption, aspects such as volume are much better than similar other products.

The core of GXl is based on 32 x86 technology of Cyrix, through combining with analogue technique with mixed signal such as Flame Image Process, has formed the IA single-chip platform of standard.GXl itself have the 6th generation the processor technology (its physics is made and has also been adopted 0.18 micron advanced four layers of metal CMOS to handle, complete Static Design), the integer aspect is sent before comprising five layers of execution pipeline of wall scroll, operand, branch target cache, wide buffering, the 16KB rewriting level cache write, wherein level cache can help GXl dynamic quicksort when obtaining operand, avoids delay pipeline.

In order to strengthen the function of CPU, NS has added other functional unit in chip periphery, comprise VGA (video graphics array, video graphics array) controller, the bitBLT engine, complete GUI (Graphics User Interface, graphic user interface) quickens ROP (raster operations, raster manipulation) unit, the NS Geode I/O of 30 frames/MPEGl playback second or figure companion chip (CS5530 or CS9211), sdram controller, support the pci controller of three bus main control equipments, it is tightr that wherein integrated SDRAM can allow level cache and main memory link, and need not re-use L2 cache.

Have pure completely hardware GUI and quicken function, be responsible for frame buffer and rectangle filling by the BitBLT engine, and graphic decoder is helped in the extra instruction of adding in CPU, and this process has been united the hardware and software collaborative work, increases the speed of bidirectional operation between Installed System Memory and the frame buffer.The BitBLT engine can also be finished and describe random vector and triangle and fill, and has possessed preliminary 3D acceleration capacity, and its display port is a passage that directly links I/O companion chip, is used for drive TFT, LCD or CRT monitor.The video generation system is got view data from frame buffer, and finishes the necessary task of searching, and data pointer is inserted pixel information stream, then produces Displaying timer control, outputs to display according to certain form at last.Display controller has comprised the DCT framework, allows the GXl processor to refresh from condensed frame buffer memory data, can significantly reduce the screen-refresh bandwidth, avoids data contention transmission channel.

Its Memory Controller Hub directly drives 64 SDRAM ports, and memory queue has comprised main memory and graphic frame buffer memory, maximum supports four bank modules, and each module is made up of two or four bank, i.e. 16 bank, common 512MB internal memory.GXl, graphics accelerator and display controller can propose multiple request to Memory Controller Hub simultaneously, and the buffer zone that memory subsystem has can reduce the problem of graphics subsystem and CPU contention bandwidth.Memory Controller Hub cushions all internal memories well by the co-ordination of internal bus.

In addition, also integrated global function pci interface module and arbitration body, the order of all access exterior I/O equipment all sends by pci bus.Though memory access work is mainly finished by sdram controller, the address mapping logic of internal bus could determine that the target of memory access is SDRAM or pci bus.

Two kinds of crucial bus interface: ISA and PCI are provided on the south bridge CS5530A.In order to improve the access speed of network, what we adopted is the network card chip that has pci interface.String, parallel port and keyboard, mouse interface that relative velocity is slower, we are articulated to them on the isa bus by a slice multifunction chip PC97317, and for the user of technical grade, by its specific demand, we can provide RS485/RS422 selectable unit interface; Simultaneously, according to system's actual needs and design feature, we also are articulated to DOC and BIOS on the ISA together.Though CS5530A provides CRT and TFT display interface simultaneously, considers actual operating position, we only provide a kind of general CRT interface in system, and the TFT interface is kept for the specific demand client.

Because multimedia popularize day by day and popular, we are the sound card selectable unit with this partial design in system design, and the sound card interface strictness designs by the AC97 standard, and the two-channel output function is provided, and microphone and two kinds of input interfaces of LINE are provided.

Although CS5530A provides ide interface and USB interface, consider commercial user and general personal user's needs, we provide memory (card) interfaces such as number of C ompact Flash Card, PCMCIA Card equally, are beneficial to user's function expansion.All required clock signals of system provide by the MK1491 chip.Power supply adopts single+5V (DC) power supply.

Fig. 3, the 4th, the software system structure figure of Fig. 1 network graphic terminating machine.Software is made up of following system bootstrap part, operating system part, file system part, graphics system part and application software part 5 parts.

System bootstrap partly is divided into dual mode: (1) local guiding; (2) remote boot.Local guiding can be divided into again: 1) OC guiding; 2) FDM guiding; 3) FLASH guiding.

Operating system adopts (SuSE) Linux OS, cooperates the special hardware customized drivers, and powerful low layer function is provided, and comprises the virtual memory technology, Virtual File System, the management of process of safety, whole network module.

Graphics system is small-sized X graphics server, and file system comprises system running environment of system and various related tool.

Application software partly comprises: the client software of RDP.ICA, DOS simulator etc.

The construction characteristic of this system is: compatible good, and flexible configuration, powerful.

Software flow

The boot program loads operating system kernel, operating system kernel obtains control, managing internal memory, process and file system, application program must be passed through specific interface, could communicate by letter with core, finish specific function, after the core initialization is finished, start an initialize process, this process starts graphics server and RDP or ICA program then.

With the RDP program is example explanation, and the RDP program starts the back and seeks the Windows server as a client-side program, connects and finishes the negotiation of agreement with server, starts agreement control, client machine be the graphic terminal of a Windows.

The general introduction of RDP: RDP (Remote Desktop Protocol is called for short RDP) is the outward appearance display protocol, can support based on Windows ^Terminal (Windows ^-basedterminal, be called for short WBT) or other based on the thin-client of Windows with based on the server of Windows by LAN (Local Area Network) (local area network, be called for short LAN) or wide area network (wide areanetwork, abbreviation WAN), Dial-up Network, integrated services network (Integrated ServicesDigital Network, abbreviation ISDN), digital loop circuit (digital subscriber line, be called for short DSL) or Virtual Private Network (virtual private network is called for short VPN) connection communication.RDP is specially for long-range demonstration and input function on the server, that provide network to connect based on the application program of Windows are provided.

Windows NT ^The outward appearance display protocol of the terminal server version of Server 4.0 is RDP 4.0, and that the use of Windows 2000 Terminal Service is RDP 5.0.But these two versions are compatible fully.

RDP is based on the consensus standard of International Telecommunications Union (ITU) (International Telecommunications Union, be called for short ITU) definition family's series T.120.As a multi-channel protocol, RDP can transmit data, serial device communication and high performance enciphered data, for example keyboard and mouse action data in different pseudo channels.In addition, its architecture characteristics is supported the multiple spot data transmission, be about to data and be transferred to a plurality of destinations from real-time application is disposable, rather than through repeatedly sending.

Send and accept seven layers of open system interlink (Open Systems Interconnection, abbreviation OSI) model unanimity of describing in behavior that data relate to and the general LAN (Local Area Network) by the RDP stack.The data of application program or service are from top to bottom transmitted from protocol stack, segmentation, are assigned to channel, encryption, packing, branch frame, are bundled to procotol, send to client according to the address at last.The data of returning are operated with opposite direction, remove the address, unpack, decipher, and arrive application program up to data transmission.Main modification partly is between the 4th layer and the layer 7 for protocol stack, and here data are encrypted, pack, divided frame, send to channel, according to priority height sends.

Application programs developer is important a bit is when using RDP, and Microsoft has come out the complicated part of processing protocol stack is abstract.This can allow Microsoft simplify and write 32 RDP application programs clean and tidy, good design, function admirable, and the RDP stack is to be responsible for by the server and client side.

About application program how and terminal server is mutual and for noting and so on details in the terminal server base frame developing application based on Windows, see also the 4.0 terminal server version optimization application white paper into Windows NT Server.Following table provides the characteristic of relevant RDP:

Characteristic	Describe
		The Unicode compatibility	16 character set
Host-host protocol	Transmission control protocol/Internet protocol (Transmission Control Protocol/Internet Protocol is called for short TCP/IP)
		Network connects	Carrying out client by LAN, WAN, Dial-up Network, ISDN, DSL and VPN is connected
Audio frequency	System beep
		Local printing	Utilize local printer to print
User conversation	Each connection landed title by using and the original different session connection activities or the session of disconnection before client was remembered
		Bitmap	For improving performance buffer memory display image (optional) in internal memory
Buffer memory	Serve low bandwidth and connect (optional)
		Encrypt	Three infill layers of secure communication

RDP is based on the T.120 expansion of protocol family standard of IT.As a multi-channel protocol, RDP can transmit data .RDP and use the video driver of oneself at the Server end in the different virtual channel, implement to show output, construct by the RDP agreement, display message bag and send to client computer by network, its receives data and explains and by calling corresponding Win32 to server, at server end in client, RDP goes to receive these incidents with its virtual keyboard and mouse-driven.

RDP supports to reducing transmitted data amount, the various different mechanisms of transmission data by network, compression, cached bitmap, the segment of font and segment because of cached bitmap, has increased 10M RAM buffer memory during RDP connects in RAM, same effective at viability afterwards, tackle bandwidth and big bitmap caching particular importance.

Printing turns to: comprise local printing in the destination of using neutralization change printer.

Far-end control: Helpdesk staff can see and control other terminal during operation, the keyboard input, and mouse moves, and displayed image is shared in during two terminals connections.

T.120 be summarized as follows:

ITU-T T.120 (07/96) Data Protocols for Multimedia Conferencing is the standard of ITU-T, has comprised a series of communications and application protocol and service, provides support real-time, multipoint data communication.

T.120 basic framework is divided into multilayer, and every layer has all defined agreement and service between layer and the layer, and each layer all is based upon on its subfoundation.Wherein, bottom (T.122/T.125, T.123, T.124) is a core technology T.120, has determined a kind of mechanism that is independent of application, and this mechanism can provide the multi-point service function for any application based on this core technology.The upper strata has then defined the application protocol that can realize certain function, as blank share, the multiple spot file transfer, use share, chat, Remote Device Control etc.

T.121 providing basic applying template for T.120 resource management, is the guide that the developer makes up application protocol.T.121 be essential for the standard application agreement; And for off-gauge application protocol, ITU also advises using the GAT template.

T.123 define the transport protocol stack profile for each network structure (PSTN ISDN CSDN PSDNTCP/IP NOVELL NETWARE, IPX) of T.120 being supported, and provide a unified OSI transmission interface and service (X.214/X.224) for upper strata MCS.

T.128 application program is shared accepted standard.

T.126 agreement is supported shared electron blank and hard copy images exchange, can carry out the exchange of basic mouse and KeyEvent, can realize functions such as rest image exchange, label character, drawing in blank.

T.127 the transmission of multiple spot binary file is supported in suggestion, uses MCS can send a plurality of files simultaneously.

Along with broad application T.120, network equipment provider has been noted that this technology.In short-term, possess these features also with regard to competitive superiority.And in the near future, T.120 product support will become essential feature.

Terminal Service provides the ability of passing through as " thin client " software remote access server desktop of terminal emulator work.Terminal Service is only passed to client computer to the user interface of this program.Client computer is returned keyboard and mouse-click action then, so that by server process.Each user can only login and see their session, and these sessions are managed pellucidly by server OS, and irrelevant with any other client session.Client software may operate on a plurality of Client Hardware equipment, comprises computing machine and based on the terminal of Windows.Other equipment as macintosh computer or based on the workstation of UNIX, also can use other third-party softwares to be connected to terminal server.

Fig. 5 is the hypotactic a kind of network system synoptic diagram that contains the present networks terminals graphic, and each terminating machine (Ucyber 2000, Ucyber 5000, Ucyber 8000, Ucyber 3000 etc.) is connected with WINDOWS 2000 servers by network.WINDOWS 2000 terminals are remote multi-subscribers of WINDOWS2000 SERVER system, client is by the LAN (Local Area Network) framework contact of remote display protocol (RDP), ICP/IP protocol and standard, the WINDOWS terminal is delivered to terminal SERVER as client with the input of its keyboard, mouse and handles, SERVER returns client to the result transmission again and shows, numerous clients can sign in on the SERVER simultaneously, and the work between them is to isolate mutually.WINDOWS 2000 terminals are directly used application program from terminal SERVER, do not have the system compatible problem, can not be eliminated because of out-of-date, and the terminal/server framework makes user management simple more, directly perceived, cheap flexibly; The user drops into lowest limit can allow the low-grade machine in no dish station easily stride into: WINDOWS 2000 terminals.

Terminal Service can be configured on server under application server pattern or remote management mode.As application server, Terminal Service provides a kind of mode effectively and reliably, by the program of webserver distribution based on Windows.Under the application server pattern, Terminal Service shows desktop and the present most of application programs based on Windows of Windows 2000 for the computing machine that possibly can't normally move Windows.When using under remote management mode, Terminal Service provides remote access ability, makes you can be from the server of managing you Anywhere virtually on the network.

The product line that Miorosoft Windows NT Server 4.0 terminal server versions have been extended Windows NTServer has extended on other the various desktop hardware by the use experience of terminal emulation with Windows operating system.The terminal server version provides the low cost of traditional large scale computer, the management environment of centralization, has also added the environment based on graphical interfaces (GUI) be familiar with simultaneously, has been convenient to use and windows platform provides to widely applying the support of program.

After Windows 2000 issue, all versions in the Windows 2000 Server series have all advanced the kernel of operating system with the Terminal Service function is integrated.Can bring following benefit like this: can be integrated with other Windows 2000 service routines better; Reduce managerial cost, because only need a package of service program just can carry out the upgrading of operating system and Terminal Service simultaneously; Reduce product price, because needn't buy independent software package in addition for obtaining the Terminal Service function.

Operating software on terminal server can make all application programs carry out and the work of data processing is all carried out on server.By a terminal-emulation software, application program is displayed on certain subscriber equipment; This terminal-emulation software may operate on various client's hardware devices, as: personal computer, based on the terminal of Windows even based on the Hand held PC equipment of Windows-CE.

In Terminal Service, the client applications of terminal emulation uses Microsoft RDP (Remote Desktop Protocol abbreviates RDP as) to send the information that keystroke and mouse move to server.

RDP is based on (the International TelecommunicationsUnion of Union of International Telecommunication, abbreviate ITU as) T.120 agreement, this is the conference protocol of international a, standard, many tunnels, and this agreement is used in Microsoft Netmeeting conference software first.This is a hyperchannel agreement for the compatible Unicode coding of high broadband corporate environment design.RDP allows automatic cutout to connect and long-range setting, also supports the encryption of three levels simultaneously.Also the data stream compression is next under client bitmap caching and the optional narrow bandwidth carries out allocated bandwidth optimization according to actual conditions by using for it.Terminal server carries out all data processing on server, then display result is sent back to the user.The application program management of being convenient to concentrate like this reduces the shared network bandwidth of application program that uses mass data simultaneously, can also carry out the Long-distance Control of server.The user can be by any transmission control protocol (transmission control protocol, abbreviate TCP as) and Internet protocol (Internet protocol, abbreviate IP as) Terminal Service is conducted interviews, as: remote access (Remote Access), Ethernet (Ethernet), internet, wireless network, wide area network (WAN) or VPN(Virtual Private Network).User's use only is subjected to network to connect the characteristic limitations of bottleneck in connecting, and the safety guarantee that connects is managed by the TCP/IP configuration of data center.If certain enterprise wishes to carry out these work: as the telemanagement to Internet resources, for the department of branch that is in the different location provides unified use, or on the text based computing machine, use the industrial application software of being with graphical interfaces, Terminal Service will be a desirable solution so.Below be the part Terminal Service the benefit that can bring;

1, can use cheaply, based on the terminal device of Windows.

2, the up-to-date application program based on Windows can be sent on the old-fashioned desk device, as: macintosh computer, Unix workstation even use DOS more early or the PC of 16 Windows.

3, the Terminal Service client computer needs minimum hard drive space, internal memory and configuration.

4, simplified support, the security and the management of concentrating are provided remote computer and branch office room environmental.

5, be the build-in function that Windows 2000 Server, Windows 2000 Advanced Server and Windows 2000DataCenter Server provide with existing application program and the network infrastructure server mode Terminal Service of not conflicting.

When keeper's installing terminal is served, can in two kinds of service modes, select one: remote management mode and apps server pattern.Remote management mode gives the keeper a strong instrument based on graphic user interface, utilize its keeper can by TCP/IP connect and any stylobate of telemanagement in the server of Windows 2000.They can management document and printer share, the login of other computing machine on the Control Network is perhaps carried out nearly all task from control desk.In the apps server pattern, can carry out the configuration and the management of application program from a center.Can save the keeper like this and carry out initial development and required time of configuration, and safeguard in the future and the time and efforts of required cost when upgrading.In case certain application program disposes by Terminal Service, other clients just can use long-range connection, LAN (Local Area Network) or wide area network to connect.

Claims (6)

1, a kind of network graphic terminating machine based on Windows is connected with server by network, is used for reception server from the user interface that network transmits, and returns input informations such as keyboard and mouse for server process, it is characterized in that comprising:

CPU (central processing unit) (CPU) is used to provide storage management and memory interface, supports WinCE and (SuSE) Linux OS;

South Bridge chip (figure companion chip) is used to provide ISA and pci bus interface, and CRT and TFT display interface are provided, and is connected in CPU (central processing unit) by pci bus and system video line (SYSTEM VIDEO);

Be connected in the network card chip of CPU (central processing unit) pci bus;

Versatile interface is articulated on the South Bridge chip isa bus by serial line interface, parallel port interface, keyboard interface and the mouse interface of versatile interface with needs;

And clock circuit, be used to provide CPU (central processing unit) and the required clock signal of South Bridge chip.

2, according to the described network graphic terminating machine based on Windows of claim 1, it is characterized in that: described CPU (central processing unit) (CPU) adopts Geode GX1 chip.

3, according to the described network graphic terminating machine based on Windows of claim 1, it is characterized in that: South Bridge chip adopts the CS5530A chip, or the CS9211 chip.

4, according to the described network graphic terminating machine of claim 3, it is characterized in that: also be provided with sound card interface in the South Bridge chip periphery, two-channel output, microphone and two kinds of input interfaces of LINE are provided based on Windows.

5, according to the described network graphic terminating machine of claim 3, it is characterized in that: on the isa bus of South Bridge chip, also articulate DOC interface and BIOS interface based on Windows.

6, according to the described network graphic terminating machine based on Windows of claim 1, it is characterized in that: described versatile interface is the PC97317 chip.

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