JP2935355B2 - Computers and computer systems - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer for displaying an image on a display, or a computer system including the display and the computer, and more particularly to various adjustments such as a display size, a position, and brightness of a screen on the display. Computer that has means for transmitting and receiving information to and from the display via communication means capable of transmitting and receiving information in both directions, or the information can be transmitted and received in both directions between the display and the computer The present invention relates to a computer system provided with various communication means.

[0002]

2. Description of the Related Art At present, in a display device such as a computer terminal, a display position and a display size of a screen and a deflection frequency of a video signal to be displayed are various. For this reason, as a display device such as a computer terminal, a single display device capable of coping with various video signals (video signals) has been used.

[0003] As this type of display device, there is a device which uses a microcomputer or a memory LSI or the like to provide an optimum screen display for each type of video signal. JP-A-1-
No. 321475 can be mentioned.

[0004] In this conventional example, a memory which previously stores display position and display size information of a screen for each type of video signal is controlled by a microcomputer or the like, and an optimum screen display corresponding to an input video signal is performed. The position and display size information is read from the memory, and a deflection circuit or the like of the display device is controlled based on the read information. When the video signal input to the display device is not a known signal, the corresponding information is not held in the memory. The user inputs adjustment information such as the display position and display size. A control circuit such as the microcomputer creates control information such as deflection based on the input information, and performs adjustment.

In the above-mentioned conventional example, the display device side seeks to obtain an optimal screen display in accordance with an input video signal. However, as another conventional example, the display state is switched by controlling from the computer main body side. Such a conventional example is disclosed in Japanese Patent Publication No. 2-60193.
And those described in Japanese Patent Publication No.

In this conventional example, the computer body superimposes and outputs a determination pulse during a blanking period of a video signal,
The display device switches the deflection frequency based on the determination pulse.

[0007]

Among the above two conventional examples, in the former conventional example, since the control of the display position and the display size of the screen are all managed by the display device side, the necessity of adjustment or When a request occurs, it is necessary to release the hand from the input device such as a keyboard connected to the computer body and to reach the adjustment switch or the like of the display device for operation, which is troublesome in terms of usability. .

Further, in the latter conventional example, the operation can be performed from an input device such as a keyboard connected to the computer main body. However, since the deflection frequency can be switched only in two values, the user of the computer needs to operate the computer. There is a problem that a required display state cannot be sufficiently obtained.

[0009] The present invention has been made in view of the above problems, and has as its object to eliminate the need for user operation.
At the same time, adjust the display screen of the display
This is automatically performed to improve the usability.
Computer and this computer and display device
And a computer system having the same.

[0010]

In order to achieve the above object , the present invention relates to a display device for displaying a screen.
Connectable to the display device for displaying a screen.
A computer for supplying the video signal
The screen from the storage means provided inside the spray device;
Control signal for reading control data related to display control of
Output means for outputting a signal and a clock signal;
For operating the computer main body, and transmitting the control signal.
The software for generating information is pre-programmed.
And a means.

Further , the present invention provides a display for displaying a screen.
A ray device, connectable to the display device,
Supplying a video signal for screen display to the display device
Computer system with a
And the computer goes to the display device.
Output means for outputting the input control signal and clock signal
And for operating the computer body, and
Information for generating the control signal is pre-programmed.
The display device, comprising:
Is a control signal and a clock output from the output means.
A receiving unit for receiving a signal, and display control of the screen
Control data is stored in advance and received by the receiving unit
The control data is read by the control signal and the clock signal.
Read out from the storage means.
Control the display of the screen using the control data obtained.
It is configured as follows.

[0012]

[0013]

[0014]

[0015]

When the computer according to the present invention starts up,
The body movement software (OS) starts running, and this software
Run the software program. This program
Along with the row, the above control signal is generated to
Together with the number. Display
In the device, the storage signal corresponds to the control signal.
Control data is read out based on the control data.
Control relating to the display screen is performed. That is, in the present invention
When such a computer is started, the display device
Automatically adjusts the display screen to obtain an appropriate display screen
To do.

Also, a computer system according to the present invention
When the computer starts up, the software
The software (OS) starts running and the software
The gram is executed. With the execution of this program,
The above control signal is generated and, together with the clock signal,
Sent to the display device. For display devices,
When this control signal is received, this control signal is
The control data corresponding to the control signal is read out, and the control data
The control regarding the display screen is performed based on the data. One
In other words, the computer system according to the present invention
When the data is activated, the display screen of the display device is automatically
So that an appropriate display screen can be obtained.

[0017]

[0018]

[0019]

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention. In the figure, reference numeral 1a denotes a computer main body, in which 11 is a CPU, 12 is a keyboard controller for processing various commands input from a keyboard (not shown) connected to the computer main body 1a,
13 is a memory circuit, 14 is an input / output port for connecting to peripheral devices, 15 is a display control circuit for generating a video signal and a synchronization signal for driving a display device, 16
Is a control signal superimposing circuit for superimposing a control signal on a video signal or a synchronizing signal output from the display control circuit 15, and 17 is a floppy disk drive circuit. Reference numeral 1b denotes a display device, in which reference numeral 18 denotes a control signal extraction circuit for extracting the control signal from a video signal or synchronization signal output from the control signal superimposition circuit 16, and reference numeral 19 denotes a control signal extraction circuit 18. A display control circuit that generates an adjustment signal for a predetermined circuit based on the extracted control signal, 20 is a video circuit, 21 is a deflection circuit, and 22 is a cathode ray tube for displaying an image.

The operation of FIG. 1 is as follows. In the computer main body 1a, portions other than the control signal superimposing circuit 16 are the same as those of a general configuration of a conventional personal computer or workstation.

First, when a user of the computer inputs a control command for adjusting a display screen of the display device 1b from a keyboard connected to the computer main body 1a, the keyboard controller 12 digitally codes the control command, and Thereafter, the CPU 11 recognizes the control command and controls the control signal superimposing circuit 16.

The control signal superimposing circuit 16 generates a control signal corresponding to the control command, and generates a control signal corresponding to the control command, and generates a video signal for driving the display device 1b or a vertical blanking period of a synchronizing signal generated by the display control circuit 15. Superimposed on

Next, the control signal extracting circuit 18 of the display device 1b extracts the superimposed control signal from the video signal or the synchronizing signal output from the control signal superposing circuit 16 and outputs it to the display control circuit 19. Along with
The video signal is sent to the video circuit 20, and the synchronization signal is sent to the deflection circuit 21.
Output to

In the display control circuit 19, a video circuit 20 and a deflection circuit 21 are provided based on the input control signal.
, And adjusts the video circuit 20 and the deflection circuit 21.

In this manner, the display screen is adjusted, and the image displayed on the cathode ray tube 22 is as desired by the computer user.

FIG. 2 is a block diagram showing a specific example of the control signal superimposing circuit 16 shown in FIG. 1, and FIG. 3 is a waveform diagram showing waveforms of main signals in FIG.

In FIG. 2, 161 is an address decoder, 162 is a data latch circuit, 163 is a pulse edge detection circuit, 164 is a shift register circuit, 165 and 170 are AND circuits, 166 is a level conversion circuit for converting a signal level, 167 is an analog switch, 168 is a counter circuit for counting 17 clock pulses, and 169 is a set-reset type flip-flop circuit (hereinafter, referred to as a flip-flop circuit).
RSFF circuit).

The operation of the figure is as follows.

As described above, the user of the computer can use the keyboard connected to the computer main body 1a.
When a control command for adjusting the display screen of the display device 1b is input, the keyboard controller 12 digitally encodes the control command, and then the CPU 11 recognizes the control command and sends a control signal superimposing circuit 16 to the computer. Send control data over the bus.

When the transmitted control data is control data for adjusting the display screen of the display device 1b, the address decoder 161 causes the data latch circuit 162 to fetch the control data. Next, the edge detection circuit 163 detects the leading portion of the vertical synchronization signal Vs using the horizontal synchronization signal Hs, and detects this edge detection pulse in the shift register circuit 164, the counter circuit 168, and the RSF.
Output to the F circuit 169.

In the counter circuit 168, the edge detection pulse is used as a reset signal, the horizontal synchronizing signal Hs is used as a clock signal, and a counting operation is performed at the rising edge.
The signal is sent to the reset input terminal of the FF circuit 169. Therefore, R
The SFF circuit 169 outputs the V gate pulse shown in FIG. A control signal for the display device 1b is superimposed during the high level period of the V gate pulse.

On the other hand, the shift register circuit 164 reads the control data held in the data latch circuit 162 in response to the edge detection pulse from the edge detection circuit 163. Next, the shift register circuit 164 performs a shift operation using the horizontal synchronizing signal Hs output by the AND circuit 170 only during the high-level period of the V gate pulse as a clock signal, and outputs control data shown in FIG.

Further, the control data is supplied to the AND circuit 16.
After taking the product with the horizontal synchronizing signal Hs in step 5, the signal is converted into a video signal level by the level conversion circuit 166 and input to the switch circuit 167. The other input of the switch circuit 167 receives a B (blue) video signal out of the video signals, and uses the V gate pulse as a switch switching control signal to output the output of the level conversion circuit 166 during a high level period. In the other low-level periods, the B video signal is selected, and the B signal on which the control signal is superimposed as shown in FIG.
Video signals can be obtained. Here, the control signal is superimposed on the B video signal having low color visual sensitivity, but may be superimposed on other R (red), G (green) video signals and synchronization signals.

FIG. 4 shows the control signal extracting circuit 18 of FIG.
FIG. 5 is a block diagram showing a specific example of the display control circuit 19, and FIG. 5 is a waveform diagram showing waveforms of main signals of FIG.

In FIG. 4, reference numeral 401 denotes a distributor, 402 denotes a low-pass filter (hereinafter, referred to as LPF), 403 denotes a level conversion circuit, 404 and 405 denote buffers, and 406 denotes one.
7 count circuit, 407 is an RSFF circuit, 408 and 40
9 is an AND circuit, 410 is an inverter, 411 is a 16-stage shift register circuit, 412 is a decoder circuit, 413 is a D / A conversion circuit (hereinafter, referred to as DAC), and 414 is an edge detection circuit.

The operation of FIG. 4 will be described below with reference to FIG.

The B video signal from the control signal superimposing circuit 16 is input to the distributor 401 and is divided into two, one of which is output together with the other video signal to the video circuit 20 shown in FIG. Output to LPF 402. LPF40
An unnecessary frequency component such as noise in the B video signal is removed from the B video signal input to 2 by the LPF 402, and then converted into a digital signal level by the next level conversion circuit 403.

The vertical synchronizing signal Vs is supplied to the buffer 40
4, and is input to the edge detection circuit 414, where
The leading edge is detected, and the edge detection pulse 4 shown in FIG.
As 18, the 17 count circuit 406 and the RSFF circuit 4
07 and 16-stage shift register circuits 411, respectively.

First, when the 17 count circuit 406 is reset by the edge detection pulse 418, a count operation is performed using the horizontal synchronizing signal Hs input via the buffer 405 as a count clock, and its rising edge is counted as 17 times.
When the number of clocks is counted, 17 detection pulses are output. next,
The RSFF circuit 407 receives the edge detection pulse 418 as a set signal and the 17 detection pulses as a reset signal, and creates a V gate pulse 419 shown in FIG.

The AND circuit 408 is a level conversion circuit 40
3 and the V gate pulse from the RSFF circuit 407, and the control signal 420 superimposed on the B video signal is extracted and output. Also, another AND circuit 40
9 takes the product of the V gate pulse and the horizontal synchronizing signal Hs from the buffer 405 that has been logically inverted by the inverter 410, and obtains a 16-stage shift register circuit 411
Make a clock signal for

The 16-stage shift register circuit 411 resets the content held by the edge detection pulse 418, and sequentially holds the control signal 420 by the clock signal from the AND circuit 409. In the decoder circuit 412, 1
The first stage, the second stage, the fifteen stages of the six-stage shift register circuit 411,
When the held value in the 16th stage is decoded and a start bit and a stop bit in the control signal 420 are detected, a load pulse 422 for the DAC 413 shown in FIG. 5 is output. The output of the second stage of the 16-stage shift register circuit 411 is used as the serial data 421 of the DAC 413 shown in FIG.

The DAC 413 is a D / A converter with a serial data input and a built-in multi-channel type. According to the DAC control address in the serial data 421 shown in FIG. 5, any one of the plurality of built-in D / A converters is used. Is selected, and the D / A conversion output value is updated with the value of the control data portion. At this time, the serial data 421 is sequentially fetched in synchronization with the clock signal from the AND circuit 409, and the fetched data is determined at the rising portion of the load pulse 422 from the decoder circuit 412.

As described above, the video circuit 20 and the deflection circuit 21 shown in FIG. 1 can be adjusted by the adjustment voltage or the adjustment current output from the DAC 413 as an adjustment signal.

FIG. 6 shows the control signal extracting circuit 18 of FIG.
FIG. 7 is a block diagram showing another specific example of the display control circuit 19. In the figure, reference numeral 601 denotes a selector;
Reference numeral 2 denotes a one-chip microcomputer (hereinafter, referred to as a microcomputer), 603, a writable read-only memory (hereinafter, referred to as an EEPROM), and the same reference numerals as those in FIG.

The operation of the figure is as follows.

The operation of extracting the control signal superimposed on the B video signal by the AND circuit 408 and generating the write clock signal of the 16-stage shift register circuit 411 by the AND circuit 409 is the same as in FIG. The operation is exactly the same. In this specific example, the microcomputer 602 processes a control signal for the display device 1b sent from the computer main body 1a shown in FIG.

First, usually, the microcomputer 602 controls the selector 601 to select the write clock signal from the AND circuit 409,
11 is written with the control signal. At this time, an edge detection pulse from the edge detection circuit 414 is input to the microcomputer 602 as an interrupt signal, and after a predetermined time elapses, the selector 601 is controlled to select a clock signal for reading from the microcomputer 602. I do.

The control signal held in the 16-stage shift register circuit 411 is sequentially read out by the read clock signal from the microcomputer 602,
Is input to If the received signal is a correct control signal, the microcomputer 602 outputs control data to the DAC 413 and adjusts a predetermined circuit in the display device 1b. This control data is stored in the EEPROM 60
3, and the control data is read out from the EEPROM 603 at the next power-on of the display device 1b, and the predetermined adjustment is performed.

Also, in this specific example, EEPRO
By storing control data in M603, necessary control data can be read out in accordance with a control signal from the computer main body 1a. Therefore, by pre-programming the control information for the display device 1b on the software for operating the computer in addition to the control command from the keyboard, it is possible to deal with each software.

As described above, in this embodiment, the case where the control signal is superimposed on the vertical blanking period of the video signal or the synchronizing signal or the like is used.
The DC level itself of the video signal can be used as the control signal. In this case, the control signal extraction circuit 18 may reproduce the DC level of the video signal and adjust a predetermined circuit of the display device 1b in accordance with this voltage value. In the present embodiment, the display device 1b
The above describes an example in which the video circuit 20 and the deflection circuit 21 are adjusted. However, it is of course possible to control the high-voltage circuit to adjust the focus and the like.

FIG. 7 is a block diagram showing a second embodiment of the present invention. In the figure, reference numeral 1c denotes a computer main body different from the computer main body shown in FIG. 1, and 70 denotes a control signal generation circuit. Reference numeral 1d denotes a display device different from the display device shown in FIG. 1, and 71 denotes a display control circuit different from the display control circuit 19 shown in FIG.
In addition, the same numbers as those in FIG. 1 indicate the same functions.

The operation of FIG. 7 will be briefly described below.

In the figure, a video signal and a synchronizing signal are output from a display control circuit 15 similar to a general personal computer or workstation.

Here, when a user of the computer inputs a control command for adjusting the display screen of the display device 1d from a keyboard (not shown) connected to the computer main body 1c, the control command is input to the keyboard. The signal is sent to the control signal generation circuit 70 via the computer bus via the controller 12 and the CPU 11.

The control signal creation circuit 70 holds the control command, creates a control signal corresponding to the control command, and outputs the control signal to the display device 1d at an appropriate timing. As an output method at this time, for example, RS-232
Existing interfaces such as C, GP-IB, Centronics, SCSI, etc. can be used. Therefore, the control signal generation circuit 70 includes a corresponding interface circuit.

Next, the display control circuit 71 of the display device 1b includes the control signal output from the control signal generation circuit 70 in the display control circuit 71.
An input is made through an interface circuit similar to the above-described interface circuit, and an adjustment voltage or an adjustment current is generated as an adjustment signal for the video circuit 20 and the deflection circuit 21 based on the control signal, and the video circuit 20 and the deflection circuit are generated. Adjust 21.

In this embodiment, since control signals are exchanged through the general-purpose interface, two-way communication is possible between the display device 1d and the computer main body 1c. For this reason, it is also possible to monitor whether the display device 1d has correctly received the control signal, what the current control state of the display device 1d is, or whether the display device 1d is operating normally. .

FIG. 8 is a block diagram showing a third embodiment of the present invention. In the figure, reference numeral 1e denotes a computer main body different from the computer main body shown in FIGS. 1 and 7, in which 81 is a display processing circuit for creating image data of a display display image, and 82 is an interface circuit. is there. Reference numeral 1f denotes a display device different from the display device shown in FIGS. 1 and 7, reference numeral 83 denotes an interface circuit, and reference numeral 84 denotes a display controller that creates various signals for driving the display device 1b. Note that an interface circuit (hereinafter, I / F)
The circuits 82 and 83 are for transmitting and receiving signals between the display processing circuit 81 in the computer main unit 1e and the display controller 84 in the display device 1f.
In addition, the same reference numerals as those in FIGS. 1 and 7 indicate the same functions.

The operation of FIG. 8 will be briefly described below.

The image processing command issued from the CPU 11 is sent to the display processing circuit 81 via the computer bus. The display processing circuit 81 receives the image processing instruction and creates image data of a display display image.

At this time, when a user of the computer inputs a control command for adjusting the display screen of the display device 1f from a keyboard (not shown) connected to the computer main body 1e, the control command is input to the keyboard. The data is sent to the display processing circuit 81 via the computer bus via the controller 12 and the CPU 11. Display processing circuit 81
When the control command is sent, a control signal is generated at a predetermined position outside the image data area.

The image data and the control signal created in this way are sent to the display device 1f as image information in accordance with a predetermined interface specification, for example, the SCSI standard having a high transfer rate by the I / F circuit 82. Output.

In the display device 1f, the I / F circuit 8
3 inputs image information from the I / F circuit 82 and sequentially sends the image information to the display controller 84. The display controller 84 sequentially writes the transmitted image information into the internal memory, and creates R, G, and B video signals and synchronization signals from the image data portion of the written image information.
If the control signal is present in the image information, an adjustment voltage or an adjustment current is generated as an adjustment signal for the video circuit 20 and the deflection circuit 21 to generate the video circuit 20.
And the deflection circuit 21 is adjusted.

Further, the display controller 84
If the image information written in the internal memory is not updated within a predetermined time, the video circuit 20 is controlled to minimize the amplitude of the video signal so that the cathode ray tube 22
To prevent image sticking.

Also in this embodiment, the computer main body 1
Since the interface between the e and the display device 1f has bidirectionality, not only the image data and control signals are sent from the computer main body 1e side, but also the reception of a reception confirmation signal and an operation status report are sent from the display device 1f side. Becomes possible. Also, the connection between the computer main body 1e and the display device 1f is made by the interface cable 1
Since it is a book, the trouble of connection can be eliminated.

FIG. 9 is a block diagram showing a fourth embodiment of the present invention. In the figure, reference numeral 1g denotes a computer main body which is different from the computer main body shown in FIGS. 1, 7 and 8, wherein reference numeral 91 denotes a modulation circuit. 1h shows a display device different from the display devices shown in FIGS. 1, 7 and 8, in which 92 is a display control circuit, 93 is a demodulation circuit, and 94 and 95 are power plugs. In addition, the same numbers as those in FIG. 1 have the same functions. The operation of FIG. 9 is as follows.

When a user of the computer inputs a control command for adjusting the display screen of the display device 1h from a keyboard (not shown) connected to the computer body 1g, the control command causes the keyboard controller 12 to operate. Sent to the CPU 11 via the The CPU 11 processes the control command and sends a control signal corresponding to the control command to the modulation circuit 91 via the computer bus. The modulation circuit 91 modulates the received control signal,
After being superimposed on the AC power, the power is transmitted from the power plug 94 to the display device 1h through the power line.

In the display device 1h, when AC power is supplied from the power plug 95 through the power line, the demodulation circuit 93 demodulates the modulated control signal superimposed on the AC power and reproduces the original control signal. I do. The reproduced control signal is input to the display control circuit 92. The display control circuit 92 generates an adjustment voltage or an adjustment current as an adjustment signal for the video circuit 20 and the deflection circuit 21 according to the instruction content of the control signal. , The video circuit 20 and the deflection circuit 21 are adjusted.

As described above, in this embodiment, since the control signal for the display device 1h is transmitted through the power supply line, the display device 1h can be controlled without increasing the number of control signal lines.

FIG. 10 is a block diagram showing a fifth embodiment of the present invention. In the figure, reference numeral 1i denotes a computer main body showing a general personal computer or a work station, and 1i denotes FIG. 1, FIG. 7, FIG.
FIG. 10 shows a display device different from the display device shown in FIG. 9, in which 101 is a command identification circuit;
Reference numeral 102 denotes a display control device. Reference numeral 1k denotes a keyboard connected to the computer main unit 1i and the display device 1j. In addition, the same numbers as those in FIG. 1 indicate the same functions.

The operation of FIG. 10 is as follows.

In FIG. 10, when a computer user operates the keyboard 1k, a key input signal is input to the computer main unit 1i and further to the display device 1j. In the display device 1j, the key input signal is processed in the command identification circuit 101, and when the key input signal is a control command for adjusting the display screen of the display device 1j, the key input signal is extracted as a control signal. The display control circuit 102 adjusts the video circuit 20 and the deflection circuit 21 by generating an adjustment voltage or an adjustment current as an adjustment signal for the video circuit 20 and the deflection circuit 21 according to the instruction content of the control signal.

In this embodiment, since the control signal for the display device 1j is not generated by the computer main body 1i, there is no burden on the CPU of the computer main body 1i. In this way, the user of the computer can control from the keyboard 1k without directly touching the display device 1j.

Here, as the signal line connected from the keyboard 1k to the display device 1j, the signal line connected to the computer main body 1i may be distributed as it is, or it may be dedicated to handling only control commands for the display device 1j. It may be a signal line. In the former case,
A general keyboard 1k can be used as it is. In the latter case, a dedicated key for display control is added to the keyboard 1k.

Further, by using a remote control circuit using infrared rays or the like in order to reduce the number of connection lines between the keyboard 1k and the display device 1j, it is possible to reduce the trouble of wiring. Further, in the present embodiment, the keyboard 1k is used as the input means of the control command, but it is of course possible to use an input device such as a mouse, a touch panel, a light pen, or the like.

[0078]

According to the present invention, when the computer is started up
Software for operating the computer
Display by program control on the OS
The display screen of the device is automatically adjusted so that the user can use it.
Before use, the appropriate display screen is automatically displayed on the display device.
And the usability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a specific example of a control signal superimposing circuit 16 of FIG.

FIG. 3 is a waveform chart showing waveforms of main signals of FIG. 2;

FIG. 4 is a block diagram showing a specific example of a control signal extraction circuit 18 and a display control circuit 19 of FIG.

FIG. 5 is a waveform chart showing waveforms of main signals of FIG. 4;

FIG. 6 is a block diagram showing another specific example of the control signal extraction circuit 18 and the display control circuit 19 of FIG.

FIG. 7 is a block diagram showing a second embodiment of the present invention.

FIG. 8 is a block diagram showing a third embodiment of the present invention.

FIG. 9 is a block diagram showing a fourth embodiment of the present invention.

FIG. 10 is a block diagram showing a fifth embodiment of the present invention.

[Explanation of symbols]

1a, 1c, 1e, 1g, 1i ... computer body, 1
b, 1d, 1f, 1h, 1j... display device, 16
... Control signal superimposing circuit, 18 ... Control signal extracting circuit, 19,
71, 92, 102: display control circuit, 70: control signal creation circuit, 81: display processing circuit, 84: display controller, 91: modulation circuit, 92: demodulation circuit,
1k: Keyboard, 101: Command identification circuit.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yuji Sano 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Media Research Laboratory of Hitachi, Ltd. (56) References JP-A-2-103592 (JP, A) BARCO Company's product "The CALIBRATOR" catalog "The CALIBRATOR expanded part-1" April 1990 "CCID-7x51 The BAR CO CALIBRATOR INTERCREATION PROTOCON COLLECTION FUNCTION MONTH FUNCTION"

Claims (4)

(57) [Claims] 1. A display device for displaying a screen.
Capable of displaying a screen on the display device.
In a computer that supplies a video signal, from storage means provided inside the display device,
To read out control data related to the screen display control
Output means for outputting a control signal and a clock signal, and for operating the computer main body, and
Pre-programmed information for generating control signals
Computer means having software means
Data. 2. The display device according to claim 1, wherein
Receiving a reception acknowledgment signal indicating that the signal has been received,
The computer according to claim 1, wherein the computer is configured to be input from an apparatus . 3. A display device for displaying a screen,
A display device connectable to the display device;
Computer that supplies video signals for screen display to devices
And a computer system comprising:
Output means for outputting a control signal and a clock signal,
For operating the main body of the computer, and
The information for generating the control signal is a pre-programmed software.
Software means, and the display device is output from the output means.
A receiving unit for receiving a control signal and a clock signal;
Control data relating to surface display control is stored in advance, and
The control signal and the clock signal received by the receiving unit
And a storage means for more control data is read out, using said control data read from said memory means
Characterized in that it is configured to control screen display
Computer system. 4. The computer according to claim 1, wherein the computer is
An acknowledgment signal indicating that the device has received the control signal
Is configured to be input from the display device.
4. The computer according to claim 3, wherein
System.