JP2005148761A - Information output system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the operability and user-friendliness of a user of a computer and to prevent the occurrence of a malfunction of a display apparatus due to an improvident operation. <P>SOLUTION: In a computer body 1, the control information of a screen display incorporated into a keyboard or software is processed with a CPU 2 and is then sent through a communication control circuit 5 to the display apparatus 6 side. A microcomputer circuit 7 in the display apparatus 6 fetches the control information from a communication control circuit 8 and performs the control of the prescribed points of a video circuit 11 and a deflection circuit 10. At this time, identification information is first transmitted from the computer body 1 side to the display apparatus 6 and when the information coincides with the identification information stored into a memory circuit 9, the above control is permitted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an information output system composed of a computer main body and the like and an information output device such as a display device or a printing device as a computer terminal, and in particular, how to output information, permission / non-permission of information output, etc. The present invention relates to an information output system in which various controls can be performed via a communication interface from a computer main body connected to the information output device, and the usability is improved.

  Currently, display devices of computer terminals have various display positions and display sizes of screens and deflection frequencies of video signals to be displayed. For this reason, a display capable of supporting various video signals (video signals) with a single display device, a so-called multi-scan display has come to be used.

  As this type of display device, there is one that attempts to provide an optimal display image for each of various video signals using a microcomputer, a memory LSI, or the like (see, for example, Patent Document 1).

  In this prior art, the memory for storing the screen display position and display size information for each video signal in advance is controlled by a microcomputer or the like, and the optimum screen display position and display size information according to the input video signal. Is read from memory. Based on the read information, the deflection circuit of the display device is controlled. If the video signal input to the display device is not known, the corresponding information is not held in the memory. Therefore, the screen display position is controlled by operating a switch or the like disposed on the front surface of the display device. And input adjustment information such as display size. Based on this input information, a control circuit such as the microcomputer creates control information such as deflection, and adjustment is performed.

  The above prior art is intended to obtain an optimal screen display in accordance with the input video signal on the display device side. However, as another prior art, the display state is switched by controlling from the computer body side. There are some (see, for example, Patent Document 2).

In this prior art, a discrimination pulse is superimposed on the blanking interval of the video signal output from the computer main body, and the deflection frequency of the display device is switched based on this discrimination pulse.
JP-A-1-321475 JP-A-61-84688

  Among the prior arts described above, in the prior art of Patent Document 1, since control of the screen display position, display size, and the like are all managed on the display device side, each time the adjustment or necessity arises, Manual adjustment using an adjustment switch or the like is necessary, which is cumbersome in terms of usability.

  Of the above-described conventional techniques, the conventional technique of Patent Document 2 can be operated from the computer main body side, but is an operation of simply switching the deflection frequency from the discrimination pulse superimposed on the video signal. It is not possible to adjust to the required display image (display position, display size, etc.). That is, there is a problem that the user cannot easily obtain a desired state. Further, no consideration has been given to the point of preventing display (disclosure) of inadvertent video (information) and the point of suppressing unnecessary power consumption. Further, even if the discrimination pulse is superimposed on the blanking period of the video signal, in the case of the display device, since the video blanking level is usually shallow, the discrimination pulse is displayed. Furthermore, since control is performed only in one direction from the computer main body side to the display device side, and vice versa, there is a problem that protection against erroneous operations cannot be performed because information is not sent.

  Accordingly, an object of the present invention is to enable various controls of an information output device such as a display device to be performed from the computer main body side, thereby improving usability and enabling a user to easily obtain a desired state. The purpose is to keep information confidential and reduce power consumption.

  Furthermore, the operation status of the information output device is notified to the computer main body side, so that it is possible to protect against an erroneous operation and to facilitate maintenance.

  In order to achieve the above object, according to the present invention, in an information output system including at least a computer main body and an information output device, the computer main body is provided with a first communication means, and the information output device is provided with a second communication means. I made it. Further, an arithmetic control means and a memory means for storing the computer body identification number in advance are added to the information output device.

  In addition to the first communication means, the computer main body is provided with memory means for storing the identification number of the information output device in advance. In addition, the second communication means has a plurality of communication interfaces. Further, a detection means for detecting the internal operation state and a calculation control means for determining the detection result are added to the information output device, and a sound output means for outputting the operation state as a sound is added to the computer body. Further, the information output device is provided with second display means for displaying the operation state. Or the display means which displays the operation state of an information output device in the computer main body was provided.

  The first communication means in the computer main body controls communication with the information output apparatus, and the second communication means in the information output apparatus controls communication with the computer main body. The calculation control means calculates and generates control signals for performing various controls of the information output device based on a control command from the second communication means, and also includes an identification number of the computer main body stored in the memory means, And the identification number sent from the computer main body via the second communication means is compared, and when the comparison result matches, a predetermined location in the information output device is controlled.

  An identification number for identifying the information output device is stored in advance in the memory means provided in the computer main body, and the computer main body is sent from the information output device via the second and first communication means. When the incoming identification number matches the identification number stored in advance in the memory means, communication is performed from the computer main body to the information output means.

  Further, the arithmetic control means controls so that information transmitted from the computer main body to the information output device is not normally output from the information output device when the above-mentioned comparison results do not match. This prevents information about computer users from being inadvertently disclosed.

  In addition, when the second communication means has a plurality of communication interfaces, it can communicate with a plurality of other information output devices and the computer main body, and a plurality of similar information output devices are connected to the computer main body. In this state, it is possible to perform various controls of the information output device and to instruct the computer main body side of the state of each information output device.

  The detecting means detects the internal operation state of the information output device, and the arithmetic control means determines the detection result. The voice output means indicates the operation state of the information output apparatus by voice based on the determination result transmitted from the information output apparatus to the computer main body via the second and first communication means. Furthermore, the display means provided in the information output device displays the operation state. The display means provided in the computer main body operates in the same manner as the display means provided in the information output device. In this case, as the display information, information transmitted to the computer main body side through the second and first communication means is used.

  According to the present invention, since the computer user can perform various controls of the information output device such as the display device by using the keyboard at hand or the software incorporated in the computer main body, the operability in the computer system is improved. The user-friendliness can be improved and the user can easily obtain a desired state.

  In addition, when the identification number is set for each device, the value set by the above control is not lost by a careless operation by the user. On the contrary, the confidentiality of information can be protected by setting the identification number of a specific user. In addition, since the power supply of the information output device can be controlled from the computer body side as necessary, unnecessary power consumption can be suppressed.

  In addition, since the state of the information output device can be easily monitored, it is possible to protect against an erroneous operation and to facilitate maintenance. Further, the control hardware can be realized with a minimum necessary configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a first embodiment of the present invention. In the figure, a portion 1 surrounded by a solid line indicates a computer main body, in which 2 is a CPU, 3 is a display control circuit for creating various signals for video display, 4 is a memory circuit, and 5 is a peripheral. It is a communication control circuit for communicating with a device, and although not shown in the drawings, a magnetic recording device or the like is attached as a storage medium.

  Further, a portion 6 surrounded by another solid line shows a so-called multi-scan display device which can cope with various video signal specifications, and 7 is a microcomputer circuit for controlling display of the display device 6. , 8 is a second communication control circuit for communicating with the communication control circuit 5, 9 is a second memory circuit, 10 is a general deflection circuit of the display device, 11 is a video circuit of the display device, Reference numeral 12 denotes a horizontal deflection yoke, 13 denotes a vertical deflection yoke, and 14 denotes a cathode ray tube (hereinafter referred to as CDT) for image display.

  The operation of FIG. 1 is as follows.

  The computer main body 1 has the same general configuration as a conventional personal computer or workstation, and the communication control circuit 5 controls a communication interface such as RS-232C provided as a standard equipment.

  First, when a computer user inputs a control command for the display device 6 from a general keyboard not shown in the figure of the computer main body 1, it is digitally encoded by a keyboard controller (not shown) and the CPU 2 The communication control circuit 5 is controlled by recognizing the command. The communication control circuit 5 transmits a control command for the display device 6 to the display device 6. When a control command for the display device 6 incorporated in software for causing the computer main body 1 to operate is read from an external storage medium such as a flexible disk drive or a hard disk drive (not shown), the CPU 2 outputs the command. Recognizing and controlling the communication control circuit 5. Similarly, the communication control circuit 5 transmits a control command for the display device 6 to the display device 6.

  Next, in the display device 6, the control command from the computer main body 1 received by the communication control circuit 8 is sent to the microcomputer circuit 7. The microcomputer circuit 7 recognizes this control command and generates a control signal for the corresponding adjustment point of the deflection circuit 10 or the video circuit 11. In this way, the display size, position, brightness, contrast, hue, etc. of the image displayed on the CDT 14 are optimized for the user of the computer system.

  Furthermore, WYSIWYG (WHAT YOU SEE IS WHAT YOU GET) control that is the same as print output of a printer or the like, which is an output device other than the display, is also displayed on the computer main body 1 side. This can be achieved by simply transmitting a control command for changing the display position, display size, etc. to the display device 6 side without performing calculation and generation of data. An interface portion such as a control terminal for communication in the display device 6 is attached to the rear portion or the side surface of the display device from the viewpoint of easy connection with the computer main body 1 and appearance problems.

  Furthermore, the communication function is also used during factory adjustment. In this case, all necessary information is written in the memory circuit 9 in the display device 6. FIG. 2 is a memory map showing the contents of the memory circuit 9 of the display device 6. Here, it goes without saying that all data to be written can be set at the time of factory adjustment. However, when adjustment is performed by the system shown in FIG. 1 except at the time of factory adjustment, data that does not need to be rewritten, that is, For example, in order to prevent factory default values such as the total number of data and data in the corresponding frequency range from being accidentally erased or rewritten, an ID number is sent from the computer main body 1 and the microcomputer circuit in the display device 6 7 collates the ID number with the registered ID number stored in the memory circuit 9.

  Here, the flowchart of this collation work is shown in FIG.

  As shown in the figure, when the power of the computer main body 1 and the display device 6 is turned on in step 1, initial setting of each device is performed in step 2. Specifically, the CPU 2 and the microcomputer circuit 7 read the system software for starting up, and the peripheral circuits connected around the CPU are set in an active state so that the next operation can be performed. Then, in step 3, the microcomputer circuit 7 in the display device 6 waits for transmission of a recognition number assigned to the computer main body 1 from the computer main body 1, a so-called ID number. Next, in step 4, when the microcomputer circuit 7 receives the ID number from the computer main body 1 side, the microcomputer circuit 7 receives the ID number and stores it in the registered ID number list stored in the memory circuit 9 in the display device 6. A search is made as to whether the received ID number is registered.

  If registered, external control of the display device 6 is permitted on the computer main body 1 side in step 5, and user control such as display size, position, brightness, and contrast of the display is thereafter performed from the computer main body 1 side. It can be done by the control command sent. On the other hand, if the received ID number is not registered in the memory circuit 9, the subsequent external control of the display device 6 is not permitted in step 6. Therefore, no matter what control command is transmitted from the computer main body 1 side, the display device 6 side does not accept at all.

  Alternatively, in step 5, all adjustments that can be performed by the display device 6, that is, the same control as at the time of factory adjustment is permitted to the computer body 1, and in step 6, some control such as display control of the display device 6 is performed. It may be allowed.

  As described above, the display device 6 can be prevented from being carelessly controlled.

  The above is an example in which the ID number is transmitted from the computer main body 1 side to the display device 6 side, but the reverse case of course is also possible. That is, an ID number is transmitted from the display device 6 side to the computer main body 1 side, the computer main body 1 side is recognized that the display device 6 having a communication function is connected, and further registered on the computer main body 1 side. When the corresponding ID number is registered as compared with the ID number, the display device 6 is controlled by a predetermined control command. In other cases, it is determined that control from the computer body 1 side cannot be performed, and control is not performed.

  As a result, communication between the specific display device 6 and the computer main body 1 is performed, and control such as changing the display color temperature of the display device 6 or changing the display size in accordance with the application software becomes possible.

  In this embodiment, RS-232C is used as an example of the communication interface, but any other general-purpose interface such as SCSI or GP-IB may be used. Further, the present invention can be applied to an apparatus using an optical signal or the like instead of an interface using an electric signal. The interface is installed near the rear cabinet or lower pedestal of the display device 6 so as not to inconvenience the user.

  Next, FIG. 4 is a block diagram showing a second embodiment of the present invention. In this embodiment, when the ID number transmitted from the computer main body to the display device is not registered in the memory circuit 9, another operation different from that of the first embodiment is performed. That is, in this embodiment, when the ID numbers do not match, nothing is displayed on the display device, thereby improving the confidentiality of the information.

  Hereinafter, the configuration of FIG. 4 will be described. In the figure, 6A is a display device different from the display device 6 of FIG. 1, 15 is a horizontal deflection circuit, 16 is a vertical deflection circuit, 17 is a synchronization processing circuit, 18 is a phase control circuit, 19 is a horizontal oscillation circuit, 20 Is a horizontal drive circuit, 21 is a horizontal output circuit, 22 is a video preamplifier circuit, 23 is a blanking circuit, and 24 is a video output circuit. The same reference numerals as those in FIG. 1 denote the same functions. The video circuit 11 is a general video circuit composed of a video preamplifier circuit 22, a blanking circuit 23, and a video output circuit 24. The horizontal deflection circuit 15 is a synchronization processing circuit 17, a phase control circuit 18, and a horizontal oscillation circuit. 19 is a general deflection circuit composed of a horizontal drive circuit 20 and a horizontal output circuit 21. The vertical deflection circuit 16 is also a general circuit having substantially the same configuration as the horizontal deflection circuit 15.

  Next, the operation of FIG. 4 will be described.

  In the figure, the ID number transmitted from the computer main body 1 is input to the microcomputer circuit 7 via the communication control circuit 8. The microcomputer circuit 7 collates with the ID number stored in the memory circuit 9 and accepts control from the computer main body 1 if it matches the ID number transmitted from the computer main body 1 side.

  On the other hand, if the collation results do not match, the microcomputer circuit 7 controls the horizontal oscillation circuit 19 to fix the oscillation frequency to a predetermined value, and the horizontal of the video signal and synchronization signal sent from the computer body side. The horizontal deflection operation of the display device 6A is performed at a value different from the frequency. Therefore, in this case, synchronization in the horizontal direction of the video displayed on the CDT 14 is not applied, and the screen contents cannot be determined. Similarly, when the vertical deflection circuit 16 is controlled, the video displayed on the CDT 14 is a screen that is not synchronized in the vertical direction. It is also possible to control the blanking circuit 23 of the video circuit 11 so that the video display period is blanked and the video is not displayed on the CDT 14.

  By using the above methods individually or in combination, only when the user of the computer system inputs a predetermined ID number from a keyboard or the like, the correct display is performed on the display device 6A, and the information displayed on the CDT 14 is displayed. Inadvertent disclosure can be prevented.

  Next, FIG. 5 is a block diagram showing a third embodiment of the present invention. In this embodiment, the display device is provided with a plurality of communication functions, and a plurality of display devices are connected by a communication interface.

  In the figure, 6B to 6D are display devices having the same configuration, V1 to V3 are video signal and sync signal lines, C1 to C3 are communication lines such as RS-232C, and 1 is the above-described computer main body. Each of the display devices 6B to 6D has a plurality of video signal input / output terminals and communication interface input / output terminals, and an ID number is registered for each. In this embodiment, as shown in FIG. 5, 1 is assigned as the ID number to the display device 6B, 2 is assigned as the ID number to 6C, and 3 is assigned to the 6D as the ID number.

  Now, the operation of FIG. 5 will be described.

  In the figure, for example, when controlling the display device 6B from the computer main body 1, the ID number 1 is transmitted to the line C1, and appropriate control is performed from the computer main body 1 to the display device 6B. Next, when controlling the display device 6C, the ID number 2 is similarly transmitted from the computer main body 1. Then, the ID number is received by the display device 6C via the lines C1 and C2, and appropriate control from the computer main body 1 to the display device 6C becomes possible.

  In this manner, since a plurality of display devices can be controlled by a single computer main body, for example, a plurality of display devices can be adjusted at the time of factory adjustment. In addition, it is easy to adjust the hue and brightness of each display device in a multi-display system in which multiple display devices are stacked to display a single image or display various images on each screen. I can do it.

  FIG. 6 is a block diagram showing an internal configuration of the display device 6B in FIG. In the figure, 25 is a communication control circuit having two communication ports, and 26 is a distributor for video signals and synchronization signals. Similar to the communication control circuit 8 of the display device 6 shown in FIG. 1, the communication control circuit 25 transmits / receives data to / from the computer main body 1, but also distributes communication lines and relays other display devices. . On the other hand, the distributor 26 distributes video signals and synchronization signals sent from the computer main body 1 and signal sources to other display devices. With such a configuration, a plurality of display devices can be connected as shown in FIG.

  Next, a fourth embodiment of the present invention will be described. FIG. 7 is a block diagram showing a fourth embodiment of the present invention. In the figure, 1B is a computer main body, 31 is a sound control circuit for generating sound, 32 is a speaker, 6E is a display device, 27 and 28 are analog / digital converters (hereinafter referred to as ADC), 29 and 30 are It is a digital-analog converter (hereinafter referred to as DAC). In addition, the same reference numerals as those in FIG. 1 indicate the same functions.

  The operation of FIG. 7 will be described below using the operation flowchart of FIG.

  As shown in FIG. 8, when the computer main body 1 </ b> B and the display device 6 </ b> E are activated in Step 10, communication is started via the communication control circuits 5 and 8 in Step 11. At this time, the process proceeds to step 12, the display device 6E side is called from the computer main body 1B side, and if there is no response, it is determined that the display device 6E has failed, the sound control circuit 31 is activated in step 13, and the speaker 32 notifies the user of the computer main body 1B of the failure of the display device 6E.

  If the communication is successful, in step 14, information on the operation state of the deflection circuit 10 and the video circuit 11 in the display device 6E is obtained from the voltage value at a predetermined location in the circuit via the ADCs 27 and 28. As shown in FIG. Next, in step 15, it is determined whether or not the value captured by the microcomputer circuit 7 in step 14 is a value during normal operation. If it is determined that there is an abnormality, the computer body 1 B is connected via the communication control circuit 8. The CPU 2 of the computer main body 1B operates the sound control circuit 31, and generates a message notifying the abnormality of the display device 6E from the speaker 32. In addition, the CPU 2 operates the display control circuit 3 and displays a message notifying the abnormality on the CDT 14 via the video circuit 11.

  At this time, an instruction code notifying which part is abnormal from the display device 6E side is also transmitted to the computer main body 1B side so that the computer main body 1B side determines the instruction code and uses which part is abnormal. Or a maintenance person of the display device 6E can be notified by sound and display.

  If the display device 6E is normal in step 15, the process proceeds to step 17 to enable communication control such as the display size, hue, and brightness of the display device 6E from the computer main body 1B. Here, when a control command is sent from the computer main body 1B to the display device 6E side, the microcomputer circuit 7 decodes the command and outputs a control code to the corresponding DAC 29 or 30. The DAC 29 or 30 controls a predetermined control location with a DC control voltage corresponding to the control code, and controls the display size, position, hue, etc. of the video displayed on the CDT 14. When the above series of operations is completed, the process returns to step 14 again, and the process from the abnormal operation monitoring mode of the display device 6E to the normal operation of step 17 is repeated.

  As described above, the communication function of the display device 6E can be used to notify the abnormal operation to the computer main body 1B, so that the user can determine where the failure has occurred and can easily perform maintenance.

  Next, FIG. 9 is a block diagram showing a fifth embodiment of the present invention. This embodiment has the same effect as the embodiment of FIG. In FIG. 9, 6F is a display device, 33 is a liquid crystal display control circuit in the display device 6F, and 34 is a liquid crystal display panel provided in the display device 6F. The same reference numerals as those in FIGS. Show.

  The operation of FIG. 9 is basically the same as that of FIG. 7, and the operation of the deflection circuit 10 and the video circuit 11 is monitored by the microcomputer circuit 7 via the ADCs 27 and 28. Is transmitted via an instruction code via the communication line, and the user is informed from the speaker 32 by voice. Further, the liquid crystal display control circuit 33 in the display device 6F is operated to display information such as the occurrence of a failure or an abnormal part on the liquid crystal display panel 34.

  In this way, information at the time of abnormality of the display device 6F can be obtained more reliably.

  Next, FIG. 10 is a block diagram showing a sixth embodiment of the present invention. This embodiment has the same effect as the embodiment of FIG. In FIG. 10, 1C is a computer main body, and 35 is a liquid crystal display control circuit in the computer main body 1C. In addition, the same reference numerals as those in FIGS. 1 and 9 indicate the same functions. In FIG. 10, the display function of the malfunction and abnormal operation of the display device in FIG. 9 is provided on the computer main body 1C side.

  That is, when the internal circuit of the display device 6E shows an abnormality, the voltages detected by the ADCs 27 and 28 are digitized and processed as abnormal voltage information by the microcomputer circuit 7, and the computer main body 1C via the communication control circuit 8 is processed. Transmit information to inform the abnormality. In the computer main unit 1C, when the CPU 2 decodes the abnormal information transmitted and recognizes which part of the display device 6E is abnormal, on the other hand, the sound control circuit 31 is operated as an audio signal, and the sound message is output from the speaker 32. To inform users. On the other hand, the CPU 2 controls the liquid crystal display control circuit 35 to cause the liquid crystal display panel 34 to display characters or graphics. As described above, the user of the display device 6E can be notified of an abnormality or failure of the display device 6E, and maintenance becomes easy.

  FIG. 11 is a block diagram showing a seventh embodiment of the present invention. In the figure, reference numeral 35 denotes a power supply circuit for the deflection circuit 10 and the video circuit 11, and the same reference numerals as those in FIG. 1 denote the same functions.

  Hereinafter, the operation of FIG. 11 will be described.

  In FIG. 11, when a control command for the display device 6 is issued from the CPU 2 of the computer main body 1, the communication control circuit 5 transmits the control command to the display device 6 in a signal format suitable for communication. In the display device 6, the communication control circuit 8 returns the received signal to a control command that can be recognized by the microcomputer circuit 7 and passes it to the microcomputer 7. The microcomputer 7 determines the control command to determine where to control a predetermined portion inside the display device 6.

  At this time, if the control command is related to the control of the power supply circuit 35 and is a command for stopping the power supply from the power supply circuit 35 to the deflection circuit 10, the video circuit 11, or both of these circuits, the microcomputer circuit 7 controls the power supply circuit 35 so as to stop the power supply. Therefore, the image display on the CDT 14 is also stopped.

  In this manner, for example, when the computer main body 1 has not been operated for a predetermined period, the operation power supply of the display device 6 can be automatically turned off. It can also be suppressed, and can contribute to the improvement of the lifetime of the display device. The above is about power-off control, but of course, power-on control is also possible. That is, in this case, when the power of the computer main body 1 is turned on or when the computer main body 1 is shifted from the function stop state to the active state, the display device automatically starts displaying. The microcomputer circuit 7, the power supply circuit 35, the deflection circuit 10 and the video circuit 11 perform the operation.

It is a block diagram which shows the 1st Embodiment of this invention. 2 is a memory map showing contents of a memory circuit in the display device of FIG. 1. It is a flowchart which shows operation | movement of the principal part of FIG. It is a block diagram which shows the 2nd Embodiment of this invention. It is a block diagram which shows the 3rd Embodiment of this invention. It is a block diagram which shows the internal structure of the display apparatus 6B in FIG. It is a block diagram which shows the 4th Embodiment of this invention. It is a flowchart which shows the operation | movement outline | summary of FIG. It is a block diagram which shows the 5th Embodiment of this invention. It is a block diagram which shows the 6th Embodiment of this invention. It is a block diagram which shows the 7th Embodiment of this invention.

Explanation of symbols

1,1A, 1B, 1C Computer body 2 CPU
5, 8 Communication control circuit 6, 6A, 6B, 6C, 6D, 6E, 6F Display device 7 Microcomputer circuit 9 Memory circuit 25 Second communication control circuit 27, 28 Analog-digital converter 31 Sound control circuit 32 Speaker 33, 35 Liquid crystal display control circuit 34 Liquid crystal display panel

Claims (11)

In an information output system comprising at least a computer main body and an information output device,
A first communication means is provided in the computer main body, a second communication means is provided in the information output device, and the computer main body and the information output device communicate with each other by the first and second communication means. An information output system characterized in that it can be performed. The information output system according to claim 1,
In addition to the second communication means, the information output device includes a calculation control means and a memory means, and an identification number for identifying the computer main body is stored in advance in the memory means,
The arithmetic control means compares the identification number transmitted from the computer main body to the information output device via the first and second communication means and the identification number stored in advance in the memory means. An information output system characterized by controlling a predetermined location in the information output device when the identification numbers of both coincide. The information output system according to claim 2,
The location controlled by the arithmetic control means is instructed by a control signal transmitted from the computer main body to the information output device via the first and second communication means. . The information output system according to claim 1,
An identification number for identifying the information output device is stored in advance in the memory means provided in the computer main body,
When the identification number transmitted from the information output device to the computer body via the second and first communication means matches the identification number stored in advance in the memory means An information output system for performing communication from the computer main body to the information output means. The information output system according to claim 1,
The information output device comprises an arithmetic control means and a memory means in addition to the second communication means,
In the memory means, an identification number for identifying the computer main body is stored in advance,
The arithmetic control means compares the identification number transmitted from the computer main body to the information output device via the first and second communication means and the identification number stored in advance in the memory means. An information output system for controlling so that information sent from the computer main body to the information output device is not normally output from the information output device when both identification numbers do not match. The information output system according to claim 1,
The information output system, wherein the second communication means provided in the information output device has a plurality of communication interfaces so as to be able to communicate with other information output devices and the computer main body. The information output system according to claim 1,
In addition to the second communication unit, the information output device includes a detection unit that detects an internal operation state in the information output device, and an arithmetic control unit that determines a detection result by the detection unit. The computer body includes information output means in addition to the first communication means,
The information output means outputs predetermined information based on a determination result by the arithmetic control means transmitted from the information output device to the computer main body via the second and first communication means, An information output system characterized in that an internal operation state of the information output device can be monitored on the computer main body side. The information output system according to claim 1,
In addition to the second communication unit, the information output device includes a detection unit that detects an internal operation state in the information output device, a calculation control unit that determines a detection result by the detection unit, and a first information output unit And the computer main body includes a second information output unit in addition to the first communication unit, and the first and second information output units are determined by the arithmetic control unit. An information output system characterized in that, based on the results, predetermined information is output, and the internal operating state of the information output device can be monitored. The information output system according to claim 1,
The information output system according to claim 1, wherein a connector of the second communication means for connecting to the first communication means is installed in the rear part of the information output device or in the vicinity of the lower pedestal. The information output system according to claim 1,
In addition to the second communication means, the information output device includes an information output means, a power supply unit, and an arithmetic control means.
The arithmetic control means determines that the control signal transmitted from the computer main body to the information output device via the first and second communication means is a control signal related to the power supply unit. An information output system characterized by controlling power supply from a power supply unit to the information output means. In an information output system composed of at least a first information output device and a second information output device,
The first information output device is provided with first communication means, the second information output device is provided with second communication means, and the first and second communication means provide the first information output device. And a second information output device can communicate with each other.

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