JP3248199B2 - Information processing device with X window - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus provided with an X window for forming a plurality of windows on a screen and controlling an operation of allocating an application program to each window.

[0002]

2. Description of the Related Art An information processing apparatus is required to be able to simultaneously execute a plurality of different application programs on the same screen in order to enhance workability in program development and the like. Therefore, in recent years, information processing apparatuses having an X window for controlling an operation of forming a plurality of windows on a screen and allocating an application program to each window have been frequently used.

Conventionally, the information processing apparatus provided with the X window is a complete type of a host computer shown in FIG. 2 or an independent type in an IP communication terminal comprising a host computer shown in FIG. 3 and a terminal dedicated to an X window system. As shown in FIG. 2, the host computer-completed information processing apparatus includes an X client 51, which is an application program operating in a window, and a display unit 54 such as a bitmap display 52 and a keyboard 53. An X window including an X server system 55 for controlling input and output is provided in the host computer 50, and the display unit 54 and the memory system 56 of the host computer 50 are used for the operation of the X window.

[0004] The information processing apparatus of the IP communication terminal in an independent type, as shown in FIG. 3, X server to the X Window system dedicated terminal 57 connected via a communication medium 60 such as Ethernet to the host computer 5 9 A system 55 is provided, and the display unit 58 and the memory system 59 of the X window system dedicated terminal 57 are used for X window operation.

[0005]

However, in the conventional information processing apparatus having an X window, all the X server systems 55 exist in one computer of the host computer 50 and the terminal 57 dedicated to the X window system. Therefore, it has the following problems.

That is, a computer system such as the host computer 50 generally has one set of a display unit 54 for realizing an interface with a user. Therefore, in the case of a host computer-completed information processing apparatus, since the display unit 54 is occupied by one X server system 55, even if a large-capacity memory system 56 is installed in the host computer, Since the X server system 55 cannot be operated, computer resources are wasted.

Further, in order to operate all the X server systems 55, it is necessary to have an arithmetic means having a calculation ability capable of withstanding a high load and a large memory capacity. Therefore,
In the case of the stand-alone information processing device in the IP communication terminal, since all the X server systems 55 operate on the X window system dedicated terminal 57, the X window system dedicated terminal 57 has a calculation capability capable of withstanding a high load. it will need to implement an arithmetic unit and a large-capacity memory system 5 6 that, it takes a high degree of processing system X window system dedicated terminal 57, is supposed to lead to excessive investment in computer resources I have.

Furthermore, in the host computer-contained and IP in the communication terminal independent of the information processing apparatus, in the case of remotely located display unit 54, 58 from the host computer 50, 5 9 operating in the client 51, 51 Needs to separate the X protocols 61 from each other. However, X protocol 61
Adopts a communication system that incorporates the concept of packet communication such as IP communication, and uses RS232 as a communication medium 60 in FIG.
Since a communication method such as C cannot be adopted, a connectable communication method is limited.

As described above, the conventional information processing apparatus having an X window causes waste of computer resources when the host computer is complete, while the information processing apparatus using the independent type inside the IP communication terminal requires excessive investment in computer resources. has become to Shorai further has a problem that communication when connecting to the host computer 50, 5 9 and the display unit 54, 58 scheme is limited. Accordingly, it is an object of the present invention to provide an information processing apparatus having an X window that can solve the above-described problem.

[0010]

According to the present invention, there is provided an information processing apparatus having an X window, comprising: a host computer and an X window system dedicated terminal. This is an information processing apparatus provided with an X window in which a plurality of windows are formed on a screen and an X client is executed via an X server system in each window, and has the following features.

That is, an information processing apparatus having an X window includes the X server system and the client side processing system as data.
Divided into a I spray unit side processing system, characterized in that the client <br/> cement side processing system is present in the host computer, the presence of the de <br/> I spray unit side processing system in the X Window system dedicated terminal And

[0012]

According to the above arrangement, the information processing apparatus having the X window executes the X server system on the client side.
System and a display unit-side processing system, the client-side processing system being present in a host computer,
The display unit side processing system is provided in a terminal dedicated to the X window system. Therefore, the terminal dedicated to the X window system can be constituted by the operation means having a low computing capacity and the memory system having a small memory capacity as compared with the case where all the X server systems are operated, thereby preventing excessive investment of computer resources. Will do.

Further, the presence of the client-side processing system in the host computer enables the display unit-side processing system, which is the X server system of the terminal dedicated to the X window system, to use the large-capacity memory system of the host computer. Since a plurality of X server systems can use the processing system of one host computer, computer resources are effectively used.

Further, since the communication between the X client and the client-side processing system of the X server system is completed in the host computer, the communication between the host computer and the terminal dedicated to the X window system is simplified. Thus, even when the X window system dedicated terminal is installed at a remote place, the information processing apparatus has no restriction on the lower layer protocol, so that various communication methods can be adopted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

As shown in FIG. 1, an information processing apparatus having an X window according to this embodiment
And a dedicated terminal 2 for the X window system. The host computer 1 has an X client 3 which is an application program.
Is Xlib4 which has a library used from c language
It is connected to an X protocol 6 on the X server system side via an X protocol 5 which is a communication protocol that defines a calling rule for using a function provided by the X window. Then, between the X protocols 5 and 6, the "UNIX Domain socket communication" is applied to the lowermost communication protocol of the X protocols 5.6, so that stable high-speed communication is performed. .

The above X protocol 6 uses the X server system which requires high-speed operation means and a large memory capacity.
The X-protocol-based subsystem 7 is incorporated in a protocol-based subsystem 7 (client-side processing system). The X-protocol-based subsystem 7 exchanges information with the X-client 3 through Xlib4 and X-protocols 5.6. It has become.

Further, the host computer 1 stores the above X
Like the X-protocol-based subsystem 7 of the server system, it also has an actual processing subsystem 8 (client-side processing system) that requires high-speed operation means and a large memory capacity. It performs a substantial rendering operation and manages information such as color information and window overlap information.

The above X protocol based subsystem 7
The actual processing subsystem 8 is connected to a memory system 11. The memory system 11 stores calculation results and information data such as drawing calculation data, window overlap information, and a mapping table between key codes and key symbols. It is supposed to. The X protocol base subsystem 7 and the actual processing subsystem 8 are also connected to a communication control driver 12, and the communication control driver 12 is a communication medium 13 such as RS232C.
Is connected to a communication control driver 14 built in the X window system dedicated terminal 2 via the. The communication medium 13 includes an RS42 in addition to the RS232C.
2, Ethernet, public line, and ISDN.

The above-mentioned X window system dedicated terminal 2
Has an image data control subsystem 9 (display unit side processing system) and a display unit control subsystem 10 (display unit side processing system) of the X server system, which have a relatively small processing amount. The system 9 manages image information such as a font image, an image of a portion hidden by a window, and a bitmap image. The display unit control subsystem 10 manages input and output to and from a display unit 19 including a bitmap display 16, a keyboard 17, a mouse 18, and the like.

Also, the X window system dedicated terminal 2
Also has a memory system 15, which stores image data such as an image of a portion hidden by a window, a font image, and a bitmap image.

In the above configuration, the operation of the information processing apparatus will be described.

First, X existing in the host computer 1
The X protocol base subsystem 7 of the server system and the X client 3 will have a conversation via the X protocols 5 and 6. In this conversation, a request from the X client 3 is processed by the X protocol-based subsystem 7 as a request, and the X
The response from the protocol-based subsystem 7 is returned to the X client 3 as a reply, so that the transparency of the X server system is maintained.

The request input from the X client 3 to the X protocol base subsystem 7 is decoded based on the X protocol 6 and then conveyed to the actual processing subsystem 8 where the request is transmitted. The actual processing according to the content of is performed. For example, if the request instructs the drawing process,
The actual processing subsystem 8 executes the drawing operation, and outputs the operation result as a drawing command and an image. If the request instructs information provision, the information data corresponding to the request is extracted from the memory system 11 and returned to the X client 3 as a reply.

The drawing command and the image generated by the actual processing of the actual processing subsystem 8 are transmitted to the communication control driver 1.
2 and the communication medium 13 to the communication control driver 14 of the X window system dedicated terminal 2. These drawing commands and images are input to the image data control subsystem 9 and the display unit control subsystem 10 via the communication control driver 14.

The above image data control subsystem 9
Means that the input image is stored in the memory system 15 of the terminal 2 dedicated to the X window system. Further, the image data control subsystem 9 writes data into the VRAM of the bitmap display 16 based on the drawing command. At this time, the memory system 15
To display the same image as the image stored in the display unit control subsystem 10 after the image is taken out from the memory system 15 of the X window system dedicated terminal 2 by the image data control subsystem 9. And written into the VRAM.

As a result, the same image is used as the image held in the memory system 15 of the X window system dedicated terminal 2, so that the host computer 1
The image transferred from the actual processing subsystem 8 is only a different image, and the transfer amount is reduced.

On the other hand, instruction signals from the keyboard 17 and the mouse 18 of the display unit 19 are input to the display unit control subsystem 10, and then the communication control of the host computer 1 is performed via the communication control driver 14 and the communication medium 13. Is transmitted to the application driver 12. And the communication control driver 1
The instruction signal received in 2 is converted into information data by the actual processing subsystem 8 and then input to the X client 3 by the X protocol base subsystem 7 via the X protocols 6.5.

As described above, the information processing apparatus having an X window according to the present embodiment includes an X server system, a client side processing system including the X protocol base subsystem 7 and the actual processing subsystem 8, and an image data control subsystem. 9 and a display unit-side processing system comprising a display unit control subsystem 10. A client-side processing system requiring high-speed processing and a large memory capacity is provided on the host computer 1, while a display having a relatively small processing amount is provided. The unit-side processing system is provided on the X window system dedicated terminal 2 side.

As a result, the X window system dedicated terminal 2 can be constituted by the operation means having a lower calculation capacity and the memory system 15 having a smaller memory capacity than when all the X server systems are operated. It is designed to prevent excessive investment of resources.

Further, X existing in the host computer 1
The protocol-based subsystem 7 and the actual processing subsystem 8 can use a large-capacity memory system 11 or a virtual memory system (not shown) of the host computer 1 and a plurality of X server systems
Can be used while arbitrarily selecting and using the processing system according to the load situation of the host computer 1, thereby enabling effective use of computer resources.

Further, since the communication based on the complicated X protocols 5 and 6 is completed in the host computer 1, the communication between the host computer 1 and the X window system dedicated terminal 2 is simplified. As a result, since the lower layer protocol is not restricted, even when the X window system dedicated terminal 2 is installed in a remote place, the communication medium 13 is not required.
It is possible to adopt various communication methods. Further, the communication control driver 12. 1 connects the client-side processing system that does not depend on the hardware of the X server system and the display unit-side processing system that depends on the hardware.
By dividing the X window through the protocol 4, the independence of the X window from the hardware can be improved, and the workability for the development and extension of the X server system can be greatly improved.

[0033]

As described above, an information processing apparatus having an X window according to the present invention has a host computer and a terminal dedicated to the X window system, and has a plurality of windows on the screen of the terminal dedicated to the X window system. It is provided with an X window which is formed and allows each window to execute an X client via an X server system. Then, the X server system is connected to the client-side processing system.
Divided into a I spray unit side processing system, the client <br/> cement side processing system is present in the host computer, the configuration of the the presence of the de <br/> I spray unit side processing system in the X Window system dedicated terminal .

Thus, the terminal dedicated to the X window system can be constituted by the operation means having a low computing capacity and the memory system having a small memory capacity as compared with the case where all the X server systems are operated. Investment can be prevented.

Further, the presence of the client-side processing system in the host computer allows the display unit-side processing system of the terminal dedicated to the X window system to use the large-capacity memory system of the host computer and a plurality of X server systems. Can use the processing system of a single host computer, so that computer resources can be used effectively.

Further, since the communication between the X client and the client side processing system of the X server system is completed in the host computer, the communication between the host computer and the terminal dedicated to the X window system is simplified, and the X window Even when the system-dedicated terminal is installed in a remote place, it is possible to adopt various communication methods.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an information processing apparatus having an X window according to the present invention.

FIG. 2 shows a conventional example, and is a schematic configuration diagram of an information processing apparatus having a host computer-completed X window.

FIG. 3 shows a conventional example, and is a schematic configuration diagram of an information processing apparatus provided with an independent X window in an IP communication terminal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Host computer 2 X window system dedicated terminal 3 X client 4 Xlib 5 X protocol 6 X protocol 7 X protocol base subsystem (client side processing system) 8 Actual processing subsystem (client side processing system) 9 Image data control subsystem ( Display unit side processing system) 10 Display unit control subsystem (display unit side processing system) 11 Memory system 12 Communication control driver 13 Communication medium 14 Communication control driver 15 Memory system 16 Bitmap display 17 Keyboard 18 Mouse 19 Display unit

Continuation of the front page (56) References JP-A-4-314124 (JP, A) JP-A-5-35623 (JP, A) JP-A-4-318620 (JP, A) JP-A-4-181330 (JP) JP-A-2-79898 (JP, A) JP-A-1-206429 (JP, A) JP-A-3-455991 (JP, A) Toshihiko Hashimoto, Akio Hoshi, "Adoption is expanding in Unix workstations. General-purpose window system, "Nikkei Electronics, March 23, 1987, no. 417, p. 127-138 (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3/14 350 G06F 3/00 655 G06F 13/00 357 G06T 11/00

Claims (1)

(57) [Claims] An X window system comprising a host computer and a terminal dedicated to an X window system, wherein a plurality of windows are formed on a screen of the terminal dedicated to the X window system, and an X client is executed in each window via an X server system. An information processing apparatus having a window, wherein the X server system is connected to a client side processing system and
Divided into a play unit side processing system, the client-side processing system is present in a host computer, an X window, characterized in that the presence of the disk <br/> play unit side processing system in the X Window system dedicated terminal Information processing device provided.