JP2002373074A - Computer system and display device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of editing data for image display anywhere by using original data only if there is a compatible PC. SOLUTION: In a computer system comprising (1) a PC main body having software for data preparation for image display which prepares data for image display from original data stored by a display device, an operation processing part and a PC inputting-outputting part for performing data communication with an external device and (2) the display device having a display device side connecting part for performing data communication with the PC main body, software for image display, data of image display and a display device memory part for storing the original data, the control to display on a displaying part by using the data for image display stored in the display device memory part is carried out when the display device is not connected to the PC main body, and the operation processing part performs controls the display device memory part to store the data for image display and the original data as a set in the display device memory part when the display device is connected to the PC main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device connected to a personal computer main body, or a computer system constituted by connecting the personal computer main body and a display device.
The present invention relates to a display device which is convenient when a display device is detached from a main body of a personal computer to display an image at a destination, has a relatively large screen and is excellent in portability, and a computer system using the display device. For example, a liquid crystal display device is a typical example of this display device.

[0002]

2. Description of the Related Art The basic structure of a general-purpose personal computer includes an arithmetic processing unit (CPU) in a computer main body for performing processing, a memory unit for storing necessary software and data, and displaying and printing data on a screen. And an input device for inputting data by an operator. In a personal computer using a monitor (display device) as an output device, as shown in FIG. 7, a read-only memory section R is provided on the personal computer main body side (personal computer main body side).
OM and a hard disk with a large capacity readable and writable memory are mounted, and a basic I / O system (BI
Operating system (OS) software (for example, Microsoft Corporation)
Windows) is stored. Basic I / O system (BI
OS) and operating system (OS) software are software necessary to function as a general-purpose personal computer.

[0003] The hard disk further stores application software (for example, Internet browser software, mail browsing software, document editing software, spreadsheet software, etc.) according to the purpose of use of the general-purpose personal computer. Data (Internet content, mail text, document data, spreadsheet data, etc.) are stored in a file format, and a work area for executing various application software is provided.

On the other hand, RO is also required on the display device side (monitor side).
M is installed, and monitor I / O necessary for input and output of image signals sent from the personal computer to the display device
A system (a liquid crystal I / O system in a liquid crystal display device) is stored. The monitor I / O system is software necessary to function as a display device.

One of the functions of a personal computer is a function of displaying image display data such as bitmap data on the screen of a display device.
Image display data creation software for creating image display data, image display software for displaying an image using the image display data, and image display data itself.
The software and data are stored in the hard disk of the personal computer, and the image display data is output as an image data signal to the display device using the image display software, OS, and BIOS, and the image data signal is received. The display device is displayed on a display unit of the display device using a monitor I / O system.

[0006] In addition to the above-described conventional apparatus having the configuration of the personal computer and the monitor, recently, data communication between the monitor and the personal computer by wireless radio is performed so that the personal computer can be connected to the adjacent room. A device has been devised that allows an image on a monitor screen to be viewed from a location away from the computer.

In the liquid crystal display device described in JP-A-11-288253, a simple display built-in memory (RAM) for writing and holding image display data is mounted on the liquid crystal display device (monitor side). It is disclosed that even when carrying the liquid crystal display unit alone,
It describes that image data accumulated in a display built-in memory can be displayed. This one edits the original data for image creation when connected to the personal computer,
Only the image display data created from the original data is transferred to the display built-in memory of the liquid crystal display device and carried, and the image display data is output to the display unit at another place.

Further, portable personal computers having different product plans from the above-mentioned products, that is, so-called mobile computers, are also widely used. This is a device in which a small liquid crystal screen and a personal computer main body are compactly arranged in order to give priority to portability, and has a function as a personal computer. However, due to the restrictions on hardware for compactness, each function is often not enough compared to a desktop personal computer or the like. For example, in order to emphasize portability, the display screen has to be made small. As a result, it is difficult for a plurality of people to make a meeting while looking at the screen of the mobile personal computer. Therefore, rather than performing work with only one mobile personal computer at any time, it is used as a personal computer that complements another desktop personal computer.

[0009]

As described above, even in the conventional apparatus, a built-in memory for display is mounted on the liquid crystal display device side, and image display data is held in this memory, so that only the liquid crystal image display device is detached. Carrying is considered. However, the display built-in memory is for carrying image display data only because the memory capacity cannot be so large, and the liquid crystal display unit separated from the personal computer side displays images. Although the monitor IO system and image display software required for the software are installed, the application software that creates the image display data itself and the original data used to create the image display data (created by various application software) Data). Therefore, the image display data cannot be created by the liquid crystal display device alone.

For example, when there is text data of an e-mail document, it is necessary to have application software including font data and a font driver in order to edit the text data and display it in a specific font format. Requires a dictionary data for special characters and a driver for dictionary data, but these are not mounted in the conventional portable liquid crystal display device. for that reason,
After creating an environment in which the necessary application software and application drivers can be used by connecting to the personal computer, create the original data that is the basis of the image display data, and use the image display data creation software to convert the original data. Image display data (for example, bitmap format data) developed like a photograph is stored in a memory.

Therefore, once the liquid crystal display device is disconnected from the personal computer main body, in order to update the image display data, the liquid crystal display device is connected again to the original personal computer main body holding the original data, and the personal computer main body is reconnected. The image data is updated by newly editing using the original data stored in the memory.

As a result, since image data can be edited only by the same personal computer, it cannot be updated by a compatible personal computer at another location. For example, the company stores the image display data in the memory mounted on the liquid crystal display device, removes the liquid crystal display device, gives a presentation using the image display data at the customer's site, and then sends the image display data at home. Even if we tried to update, only the company had the original data, so even if we had another compatible personal computer at home, we couldn't do the update without returning to the company.

Of course, if the original data is stored in a storage device such as an IC card separately from the liquid crystal display device and then taken out together with the liquid crystal display device, the update operation can be performed. It is necessary to carry the card, and it is necessary to execute the work of writing the original data to the IC card each time. In addition, since the image display data and the original data are stored in different media, another original data may be stored in the IC card due to an erroneous operation.

On the other hand, if a mobile computer having a single function as a computer is used, the image display data can be held together with the original data, so that not only the image display data is displayed, but also the update operation can be performed anywhere. It can be carried out. However, unlike a display device, a mobile device needs to have a function as a personal computer, so hardware and software necessary to execute functions and operations other than display are also required. It becomes a highly functional device and becomes expensive.

As another problem other than the price, the mobile type device has only a small display screen by its nature, so that it is not only necessary to view the screen alone, but to make a presentation while watching the screen in a small conference room such as a business meeting. Is impossible. Of course, if there is a separately prepared device such as a projector, it can be connected to the device for enlarged display, but such a device is not always available.

Further, since it is a top priority to make the mobile device compact, the CPU and memory mounted on the mobile device are limited in size and weight, so that they are inevitably used in stationary personal computers such as desktop personal computers. In comparison, performance such as processing speed is inferior. Nowadays, personal computers are widely used, and liquid crystal display devices can be connected to personal computers in almost any place as long as they are compatible. For this reason, data creation and editing that require a high-speed operation environment are performed in an easy-to-use environment by connecting to a high-performance personal computer. When only image display is required, it is desirable to carry as light and compact as possible.

Accordingly, the present invention allows the display screen to be detached from the personal computer body and carried, and it is not necessary to connect to the original personal computer after the display screen has been removed. It is an object to provide a display device capable of creating and editing data.

Also, if another image display data is required in addition to the originally prepared image display data, a compatible personal computer can be used in another place without connecting to the original personal computer. It is an object of the present invention to provide a display device capable of creating image data simply by connecting to a display device.

[0019]

Means for Solving the Problems The computer system of the present invention which has been made to solve the above-mentioned problems includes (1) a basic IO system (BIOS) and an operating system (OS) required to function as a general-purpose personal computer. When executing a function as a general-purpose personal computer, a PC memory unit for storing image display data creation software for creating image display data from various application software, original data to be executed by the various application software, (2) a personal computer main body having an arithmetic processing unit for controlling the PC, and a PC input / output unit for performing data communication with an external device;
A display device side connection unit for performing data communication with a PC input / output unit of a personal computer main unit, a display unit for displaying an image, a monitor IO system necessary for executing a display function, and image display data. A display device memory unit for storing image display software for displaying, image display data, and original data; a display device input unit for performing input; and a display device control unit for controlling a display operation. A computer system comprising: a display device; and (3) an input device connected to the main body of the personal computer and performing input to the main body of the personal computer.
The display device control unit displays the image display data stored in the display device memory unit using the image display software of the display device memory unit when the display device is not connected to the personal computer so that data communication is possible. The arithmetic processing unit performs control to execute a function as a display device for a personal computer when the display device is connected to the personal computer main body so as to be able to perform data communication. When storing image display data, control is performed to store the image display data and its original data in pairs in the display device memory unit.

According to the present invention, the display device has a state in which the display device is connected to the main body of the personal computer so as to be able to perform data communication, and a state in which the main body of the personal computer is separated from the main body so that data communication is not possible. When the display device and the computer main unit are in a state where data communication is possible, the display device displays an image on a screen by transmitting an image data signal from the computer main unit under the control of the arithmetic processing unit and the display device control unit. Functions as a normal display device. When the image display data is stored in the display device memory unit, the image display data is created from the original data by the image display data creation software, and the image display data and the original data are paired with the display device memory unit. Control to accumulate data. Thus, whenever image display data is stored in the display device memory unit, the original data is also stored. When the display device is disconnected from the computer main body and cannot perform data communication, the display device displays image display data on the display unit using image display software under the control of the display device control unit. As a result, the image display data can be edited anywhere by connecting to a compatible general-purpose computer.

Also, a personal computer PC
A station input / output unit for data communication with the input / output unit, and a station side for transmitting / receiving data to / from the station input / output unit and for data communication between the display unit side connection unit. The display device further includes a station unit having a connection unit and a support unit for supporting the display device, the display device is configured to be detachable from the support unit of the station unit, and the display device and the computer main body are connected via the station unit. Connect to enable data communication. Thus, the display device and the computer main body can be easily attached and detached.

Further, the display device memory section may store the operation environment information of the original data. As a result, the operation environment of the original data can be easily transferred to the computer at another location.

The arithmetic processing unit of the main body of the personal computer stores the working original data in the display device memory unit in response to the data storage request signal from the input device, and stores the original data in the display device memory unit. If the data is the original data, the necessity of the update is determined based on the data update information, and if the data is to be updated, control is performed to update the original data and the image display data in pairs. Thus, the image display data and the original data can be surely updated in pairs.

The arithmetic processing unit of the personal computer main unit stores only the original data based on the input information from the input device when storing the original data in the display device memory unit, or stores the image display data and the original data. Control for switching whether to accumulate in pairs may be performed. This allows the pair of the image display data and the original data to be stored in the display device memory unit by the input from the input device, or
It is possible to select whether to store only the original data in the memory unit.

Further, the display device may further include a battery unit, and when the display device is detached from the station unit, the display unit may be operated by the power of the battery unit.
Thus, the display device can obtain power from the battery unit when power from the commercial power supply cannot be obtained.

The display device of the present invention can be used as a display device of a computer system as described above.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. First, a schematic configuration of the display system of the present invention will be described. FIG. 2 is a diagram showing a standard external configuration of the display system of the present invention. In the figure, 10 is a personal computer main body (personal computer main body), 20 is a station section, and 30 is a display device.

Since a general-purpose computer is assumed as the personal computer body 10, a keyboard as an input device 18 and a display device 19 as an output device are provided as standard. A display device 30 configured to be detachable from the station unit 20 as a second output device is connected to the personal computer 10 in parallel with the display device 19. The reason why two display devices are provided is that the user may want to use the personal computer 10 even when the display device 30 is detached as described later. If it is not necessary, only the display device 30 may be used instead of the display device 19.
That is, the station unit 20 and the display device 30 may be attached to the position of the display device 19 so that only one unit is provided.
In the following description, for the sake of convenience, a description will be given in a state where only the display device 30 is connected.

FIG. 1 is a block diagram showing a configuration of a display device and a computer system using the display device according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a personal computer main body (personal computer main body), reference numeral 20 denotes a station unit, and reference numeral 30 denotes a display device, which correspond to those having the same reference numerals in FIG.

The personal computer 10 includes an arithmetic processing unit 11 for executing arithmetic processing as a computer, a PC memory unit 12 for storing software and data necessary for the arithmetic processing, and a data communication between the personal computer 10 and external devices. It has a PC input / output unit 13 which is an interface for performing the operation.

The arithmetic processing unit 11 uses a so-called microprocessor. The PC memory unit 12 includes a ROM 12A that is a read-only memory, a RAM (not shown) that is a readable and writable memory, and a hard disk 12B that is a large-capacity readable and writable memory. Also, a keyboard as an input device 18 for inputting commands and data is connected to the personal computer main body 10.

The station unit 20 includes a station input / output unit 21 serving as an interface for performing data communication with the PC input / output unit 13 of the personal computer body 10.
A station-side connection unit 22 that is connected to the station input / output unit 21 and serves as an interface when performing data communication with the display device 30; a power supply connection unit 23 for transmitting power from a commercial power line (not shown) to the display device 30;
And a station control unit 25 for controlling each device in the station unit 20.

The station unit 20 has a display device 3
There is a support portion 28 for attaching and fixing the display device 0, whereby the display device 30 is mounted on the station portion 20. The support part 28 also has a function as a cable connector for data communication with the display device 30. In addition, the power from the power supply connection unit 23 of the station unit 20 also functions as a supply line.

The display device 30 includes a display unit 31 for displaying image data, a display device memory unit 32 for storing programs and data, a display device side connection unit 37 serving as an interface for performing data communication, Display device 30
Display device input unit 3 which is an input device when used alone
8 (see also FIG. 2), when the display device 30 is used alone, the control is performed independently. When the display device 30 is connected to the computer main unit 10 so as to be able to perform data communication, the arithmetic processing unit 11 of the computer main unit 10 The display device includes a display device control unit 39 that performs control in cooperation with each other, and a battery unit 40 that serves as a driving power source when the display device is used alone.

The display device side connection portion 37 is connected to the station side connection portion 22 so as to be capable of data communication by fixing the display device 30 to the support portion 28 of the station section 20. At the same time, power can be supplied from the power supply connection unit 23.

The display device input section 38 is provided for other purposes (for example, a contrast adjustment operation key) in the case of the display device 30.
The control key attached in is used.
That is, the command assigned to the display device input unit 38 is switched by the control of the display device control unit 39 between a state where the display device 30 is connected to the station unit 20 and a state where the display device 30 is disconnected. In the released state, a new input command such as switching of image display data is required, so by assigning another meaning required in the released state to the already provided control key, new control It is possible to function as a necessary input device without increasing the number of keys.
Of course, it goes without saying that a control key may be separately provided.

Since a relatively large screen (for example, A4 size) is required for the display unit 31 and portability is required, a liquid crystal display is suitable for the purpose of the present invention.

The display device memory section 32 comprises a ROM 32A which is a read-only memory, and a large-capacity readable / writable memory 32B. A hard disk is suitable for the large-capacity memory 32B, but is not limited thereto. R
The OM 32A includes a monitor I / O system 33 necessary for controlling input / output of data to / from the display device 30.
And image display software 34 necessary for displaying the image display data. On the other hand, the image display data 3 is stored on the hard disk which is the large capacity memory 32B.
5 (for example, bitmap format data) and original data 36 for image creation used when creating the image display data.

The original data 36 includes, for example, document data created using document creation application software (for example, Microsoft Word), mail document data created using electronic mail software, drawing data using graphic creation software, and table data. Anything that can be created using commercially available application software, such as spreadsheet data using calculation software, and that can be displayed on a screen using the application software, may be used.

The image display data 35 is obtained by developing an image displayed on a screen using application software as a set of digital data signals given to each pixel constituting the screen, independently of the application software. For example, it is data similar to an image signal when an image on a screen is captured.

The image display data 35 and the original data 36 held on the hard disk, which is the large capacity memory 32B, are always held in a pair structure as shown in FIG. That is, in the storage area of the image display data 35, the document A display data 351, the mail A display data 352,
When the document B display data 353 exists, the original data 3
In the storage area No. 6, the document A data 361 and the mail A data 36 which are the original data when each image display data is created are stored.
2. Document B data 363 is also held.

As will be described later, operation environment information (for example, a special character data file or the like) required when creating or editing original data can be held at the same time.

FIG. 3 is a diagram schematically showing the internal structures of the memories of the personal computer main body 10 (PC memory unit 12) and the display device 30 (display device memory unit 32) in the computer system of the present invention. is there.

The PC body 10 side (PC side)
The basic IO system 121 (BIOS) is mounted on the OM 12A. An operating system 122 (OS) and application software 123 (Word, e-mail software, etc.) are mounted on a hard disk serving as the large-capacity memory 12B. Further, as one of the application software 123, image display data creation software 124 for developing the original data 36 to create the image display data 35 is included. In addition, a work area 125 for executing the program, and original data 36 (word data, Excel data, e-mail data, etc.) to be executed by the application software are also included.

The display device 30 (monitor side) has a ROM
A monitor IO system 33 and an image display software display program 34 are mounted on 32A. Large capacity memory 3
The image display data 3 created by the image display data creation software 124 is stored in the hard disk 2B.
5 and the original data 36 are held in a paired structure as shown in FIG.

Next, a method of using the computer system will be described. As described above, the computer system of the present invention is used as a display device of a general-purpose personal computer when the display device 30 is communicably connected to the personal computer 10. Since the relationship between the personal computer 10 and the display device 30 and the method of using the system at this time are well known without needing to be described, the description is omitted here.

On the other hand, the display device 30 is
To display only the image display data at another place, first, the application software 123 in the personal computer body 10 is executed to create the original data 36, and the image display data 35 is further separated from the original data 36. It is necessary to develop them and hold them in the display device memory unit 32.

FIG. 5 is a diagram showing a flow when the original data 36 is created and a file is stored in the display device memory unit 32. The original data 36 is created by the application software 123 in a state where the display device 30 is communicably connected to the personal computer 10 and the display device 30 functions as the display device of the personal computer 10. For example, under Word, which is one of the application software 123,
It is assumed that an image is displayed on the screen by the document A data 361.

At this time, a request to save a file in the display device memory unit 32 is made by input from the input device 18 (s11). Then, the document A data 36 is transmitted by the basic IO system 121, operating system (OS) 122, and Word that is the application software 123.
1 is stored as a file in the original data area 36 of the hard disk 32B of the display device 30 (s12).

Subsequently, it is determined whether the file is an image display file (a file composed of the image display data 35) (s13). At this time, since it is an original file created under Word (a file composed of the document A data 361), it is not an image display file.
If the file is not an image file like the document A data 361, the file is stored in the display device memory unit 3
It is confirmed whether or not the file is a file for storing the image display data 35 in s2 (s14). For this confirmation, the file which is the target file may be designated in advance by the input device, or the fact that the file is the target file may be input at this time. Here, if the file is not the target file, the original file is simply stored in the display device memory unit 32, and the file saving process ends.

On the other hand, if the file is a file in which the image display data 35 is to be stored in the display device memory unit 32, the necessity of updating the data is confirmed by checking the new or old of the file (s15). Whether the file is new or old can be easily determined by providing the creation date and time information in the file attribute recorded when the file is saved. If there is no need to update, the process is terminated. If necessary, the original data 36 is developed using the image display data creation software 124 to create image display data 35,
This is written as an image display data file (s16). Since the file has been written in s16, it is determined whether the written file is an image file again (s13). Since the second time is an image file written in s15, the file saving process ends (s17).

In this way, the file of the image display data 35 is stored in the display device memory unit 32, and the file of the original data 36 is also stored. However, the display device memory unit 32 stores image display data creation software 124.
Since the application software 123 is not installed, nothing is performed using the original data 36 stored in the display device memory unit 32 when the display device 30 is used alone. As a result of the above procedure, when there is a file of the image display data 35 in the display device memory unit 32, the file of the original data 36 is always held as a pair.

By inputting whether or not the file is a target file from the input device, whether or not only the original data 36 is to be stored,
It is possible to select whether to hold the original data 36 and the image display data 35 as a pair.

The image display data 35 and the original data 3
6 is not automatically stored as a pair, and when the image display data 35 is stored in the display device memory unit 32, if the corresponding original data 36 is not stored, a warning message to that effect is displayed. May be performed so that the original data 36 is always written manually to form a pair structure.

Thereafter, when the display device 30 is separated and an image is displayed alone in another place, the display device input unit 3 is provided under the display device control unit 39 using the battery 40 as a power source.
By operating 8, the image display data 35 is displayed on the screen of the display unit 31 by the image display software 34. Since the display device 30 holds the original data 36 corresponding to the image display data 35, the image display data 35 can be updated at another location by connecting to a compatible personal computer. Will be possible.

Next, referring to FIG. 6, an operation in the case where the personal computer operation is immediately terminated without performing the file saving process will be described. An end signal is input from the input device 18 (s21). In response to this, it is determined whether the file is a target file for storing the image display data 35 in the display device memory unit 32 (s22). Whether the file is a target file may be input from the input device 18 in advance, or may be input at this time.

If it is not the target file, the power is turned off as it is (s25). If the file is a target file, the necessity of updating the data is checked by checking the new or old of the file (s23). Whether the file is new or old can be easily determined by providing the creation date and time information in the file attribute recorded when the file is saved. If there is no need to update, just turn off the power (s
15) If necessary, the original data 36 is developed using the image display data creation software 124 to create the image display data 35, and the image display data is written as a file together with the original data (s24). ). The writing of the original data and the image display data is performed first in s21 to s21 in FIG.
This is performed according to the flow and procedure of file saving shown in s26. When writing is completed, the power is turned off (s25).

In the above embodiment, the display device 30 is supported by the station unit 20. Instead, the display device 30 is provided with a foldable stand or the like, so that the display device 30 can be directly connected without passing through the station unit 20. Data communication may be performed between the PC input / output unit 13 of the personal computer body 10 and the display device connection unit 37.
In this case, the display device 30 may be provided with the same one as the power supply connection portion 23.

Further, it goes without saying that the image display data 35 and the original data 36 may be stored in the PC memory unit 12 by the input from the input device 18. For example, by storing data before updating, it is possible to save the data as an update history record.

As shown in FIG. 4, the application software 1 for creating the original data 36 in addition to the image display data 35 and the original data 36 in the display device memory 32.
By storing the 23 operating environment information (for example, special character information created by the user) as attached operating environment data 361A to 363A along with the original data 36, the operating environment information can be stored in a personal computer different from the original personal computer. Can be easily transplanted.

[0061]

According to the present invention, since the image display data and the original data are stored in the display device memory so as to form a pair, compatibility is maintained even when only the display device is taken out alone. Image display data can be edited using the original data anywhere there is a certain personal computer.

In addition, the display device memory section additionally holds only original data that is not held in pairs with the image display data 35, so that the display device memory section can be connected to a compatible personal computer. , New image display data can be created.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a computer system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of a computer system of the present invention.

FIG. 3 is a diagram showing a configuration of a memory unit on a personal computer side and a monitor side in the computer system of the present invention.

FIG. 4 is a schematic diagram showing a data structure of a display device memory unit of the present invention.

FIG. 5 is a flowchart when data is written to a display device according to the present invention.

FIG. 6 is another flowchart when data is written to the display device according to the present invention.

FIG. 7 is a diagram showing a configuration of a memory unit on a personal computer side and a monitor side in a conventional computer system.

[Description of Signs] 10: Personal computer main body (PC main body) 11: Operation processing unit 12: PC memory unit 12A: ROM 12B: Large capacity memory (hard disk) 18: Input device 20: Station unit 21: Station input / output unit 22 : Station side connection unit 25: Station control unit 28: Support unit 30: Display unit 31: Display unit 32: Display unit memory unit 32A: ROM 32B: Large-capacity memory 33: IO system for monitor 34: Image display program 35: Image Display data 36: Original data 37: Display device side connection unit 38: Display device input unit 39: Display device input unit 40: Battery unit

Claims (14)

[Claims] An image display data is created from a basic IO system (BIOS) and an operating system (OS) required to function as a general-purpose personal computer, various application software, and original data to be executed by the various application software. A PC memory unit for storing image display data creation software, an arithmetic processing unit for performing control when executing a function as a general-purpose personal computer, and a PC input / output unit for performing data communication with external devices. , A display device-side connection unit for performing data communication with a PC input / output unit of the personal computer body, a display unit for displaying an image, and a monitor IO required for executing a display function Image display for displaying system and image display data A display device including a display device memory unit for storing software, image display data, and original data, a display device input unit for performing input, and a display device control unit for controlling a display operation; An input device connected to the personal computer main unit, and an input device for performing input to the personal computer main unit. The display device control unit controls the display device memory when the display device is not connected to the personal computer main unit so that data communication is possible. Control for displaying the image display data stored in the display device memory unit on the display unit using the image display software of the unit, and the arithmetic processing unit is connected to the display device so that the display device can perform data communication with the main body of the personal computer. Control to execute the function as the display device for the personal computer when the Computer systems and performing control of storing the display device memory unit as pairs of display image data and its original data when storing image display data in the memory unit. 2. A station input / output unit for connecting to a PC input / output unit of a personal computer main body so that data communication is possible, and data is transmitted / received between the station input / output unit and a display device side connection unit. A station unit having a station-side connection unit for connecting to enable data communication, and a support unit for supporting the display device, wherein the display device is configured to be attachable to and detachable from the support unit of the station unit; The computer system according to claim 1, wherein the display device and the computer main body are connected to each other via a unit so that data communication is possible. 3. The computer system according to claim 1, wherein the display device memory unit includes a readable and writable large-capacity storage medium capable of storing image display data and original data as a pair. 4. The computer system according to claim 3, wherein the mass storage medium is a hard disk. 5. The computer system according to claim 1, wherein the display device memory further stores operation environment information of the original data. 6. The computer system according to claim 1, wherein the original data stored in the display device memory unit includes data update information for confirming whether the data is new or old. 7. An arithmetic processing unit of a personal computer main unit stores original data in operation in a display device memory unit in response to input of a data storage request signal from an input device, and image display data created from the original data. If the data is to be stored in the display device memory unit, the necessity of updating is determined based on the data update information. The computer system according to claim 6, wherein control for updating data is performed. 8. An arithmetic processing unit of a personal computer main unit stores only original data based on input information from an input device when storing original data in a display device memory unit, or stores image display data and original data. 2. The computer system according to claim 1, wherein control is performed to switch between storage and storage in pairs. 9. The display device further includes a battery unit.
The computer system according to claim 2, wherein when the display device is detached from the station unit, the display device is operated by the power of the battery unit. 10. The display device control unit according to claim 1, wherein the display device control unit performs control for switching a function assigned to the display device input unit depending on whether the display device is performing data communication with the computer main body. Computer system. 11. A display unit for displaying an image, a display device-side connection unit for connecting to a personal computer main body so as to enable data communication, a monitor IO system necessary for executing a display function, and a personal computer main unit To store the original data created using the application software, the image display data created using the image display data creation software of the personal computer, and the image display software for displaying the image display data. A display device memory unit, a display device input unit for performing input, and a display device control unit for controlling a display operation, and the image display data stored in the display device memory unit is used for displaying the image. A display device characterized by being stored in a pair structure with original data for creating application data. 12. The display device according to claim 11, wherein the display device memory section includes a large-capacity storage medium capable of storing image display data and original data in a pair structure. 13. The display device according to claim 11, wherein the display device memory section further holds operation environment information of the original data. 14. The display device according to claim 11, wherein the original data stored in the display device memory unit includes data update information for confirming whether the data is new or old.