JP3301068B2 - Image display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device in which a display device for displaying an image and a display data control device for forming the image data to be displayed are connected via a transmission line. The present invention relates to an improvement in an image display device configured to be able to switch and control the image data from the outside via the display device by an operation finger of a machine for use.

[0002]

2. Description of the Related Art Conventionally, as this type of image display device,
For example, as shown in FIG. 4, data from a display device 1 that actually displays an image and a control unit (which is not shown, the same applies hereinafter) that forms a sequence controller, a programmable controller, and the like are transmitted to the display device 1. A configuration is known in which a display data control device 3 for controlling output is connected via a communication transmission line 5 such as a serial transmission line or a parallel transmission line, and the display device 1 is installed on the side of a production line where a control target is placed. On the other hand, in many cases, the display data control device 3 is installed at a location away from the production line together with a sequence controller or a programmable controller, or built in these.

In the display device 1, for example, a main control unit 7 is connected to an image display unit 11 such as a liquid crystal display or a plasma display via a display control unit 9, and a large number of switch elements which are turned on by an external touch. (Omitted in FIG. 4), a touch panel unit 13 having good transparency having a matrix is superimposed on the image display surface, and the touch panel unit 13 is connected to the main control unit 7 via the switch detection unit 15 while being exchangeable. The input / output unit 21 serving as a buffer for communication between the image data storage unit 17 composed of a simple ROM or the like, the memory card input unit 19, and the display data control device 3 is connected to the main control unit 7. .

The image data storage unit 17 stores fixed data indicating a fixed image such as a schematic diagram of an injection molding machine or the like or an operation graph, and numerical values or variable graph data inserted in the schematic diagram or the operation graph of the mechanism. (An address in a variable data storage unit 23 to be described later in the display data control device 3) in which the fixed data similar to the image data storage unit 15 is stored in the memory card input unit 19. Is fixedly stored. In addition, the display data control device 3 stores the measured value data, the target value data, the calculation data, and other variable data to be inserted into the above-mentioned fixed data from the above-described control unit connected thereto at predetermined addresses. Variable data storage 2
3, a sub-control unit 25 that controls output of variable data from the variable data storage unit 23 based on an instruction from the display device 1,
And an input / output unit 27 that is a communication buffer.

The display data control device 3 is housed in a case or the like separate from the display device 1, and the sub-control unit 25 functions as a main control unit by itself. (The same applies hereinafter). In such an image display device, the switch detection unit 15 detects a switch signal from each switch element of the touch panel unit 13 to detect the position of the touch panel unit 13 that is switched on from the outside, and the main control unit 7 The image display area corresponding to the position where the switch is turned on is specified, and what operation is externally input via the touch panel unit 13 is determined by the main control unit 7.
Is determined.

Therefore, when the operator presses the touch panel 13, the main operation unit 7 detects, for example, the selection of the display image via the switch detection unit 15, and the main control unit 7.
Selects and captures fixed data from the image data storage unit 17 or the memory card input unit 19, while the input / output unit 2
The address of the variable data is designated to the sub-control unit 25 via 1 and 27. Then, the sub control unit 25 of the display data control device 3 specifies the address of the variable data storage unit 23, reads the corresponding variable data, and reads the corresponding variable data.
Output control to

On the display device 1 side, the main control section 7 inserts and integrates the variable data into the above-mentioned fixed data to create image data containing the variable data. Control the layout of the display screen. Further, even when the fixed data such as the schematic diagram of the mechanism and the operation graph do not change, the display device 1 sequentially inputs the variable data inserted therein under the control of the main control unit 7 from the display data control device 3 side. To control the insertion into the fixed data and update the image display.

[0008]

However, in the above-described conventional image display device, the main control unit 7 in the display device 1 is not provided.
Display data control device 3 each time the
The display data control device 3 calls the sub-control unit 25 in the display device 1 and stores the variable data from the variable data storage unit 23 into the display device 1.
The image data is generated by transmitting the image data to the side sequentially, and the main control unit 7 of the display device 1 controls the insertion into the fixed data to generate the image data. As a result, it becomes difficult for the main control unit 7 to perform not only image data creation processing but also other data processing, so that the data processing capability of the display device 1 is reduced and the operation functions are restricted.

For example, in a display device 1 installed on a production line remote from a sequence controller, a programmable controller, or the like, for example, process image data such as various conditions of a production process are printed out on paper or stored on a memory card. When it is necessary to output the data or to output the data to another device, the above-described configuration has a limited processing capability, and is difficult to cope with and has a problem in operability. Although it seems to be solved by providing the variable data storage unit 23 in the display device 1, the operation processing of the main control unit 7 is not reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional drawback. In an image display device in which a display device and a display data control device are connected via a communication transmission line,
It is an object of the present invention to provide an image display device capable of reducing the processing load on the display device and adding processing operations other than display processing such as image data output processing.

[0011]

According to the present invention, there is provided a display device for controlling display of an image and a display data control device connected through a communication transmission line. The display device has an image display unit having an optical image display surface, a display control unit that controls image display of the image display unit based on image data containing variable data obtained by inserting variable data into at least fixed data, A selection unit for externally switching and selecting fixed data and / or variable data, and inputting at least the variable data-containing image data to the display control unit and directly controlling the output to the display control unit; based on a selection instruction from a main control unit for inputting and outputting controlling these fixed data and or variable data, to the outside by an instruction from the main control unit
For those fixed data, variable data and / or image tables
An external input / output unit for inputting / outputting image data not shown .

The display data control device includes an image data storage unit that stores the address of the variable data and the fixed data, and inputs the variable data from an external control unit.
A variable data storage unit for storing by force , storing and controlling the variable data, and combining the fixed data and the variable data of the image data storage unit and the variable data storage unit according to an instruction from the main control unit to at least enter the variable data. A sub-control unit that creates image data and outputs the image data to the display device .

[0013]

In the present invention having such means, when the selection unit of the display device switches and selects the display screen, the main control unit controls the sub-control unit of the display data control device, and the sub-control unit controls the image data. The fixed data and the address of the variable data related to the fixed data are read from the storage unit, and the variable data is read from the variable data storage unit to create an image containing the variable data and transmit it to the display device side. In the display device, the main control unit controls the display of the image containing the variable data on the image display unit via the display control unit. Further, an external input / output unit of the display device
Accordingly, the image de not appear variable data containing image and image
Data and the like are input and output controlled by the display device in accordance with an instruction from the main control unit.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. Before describing the details of the present invention, the outline of the image display device according to the present invention will be described. FIG. 1 is a schematic block diagram showing the outline of the image display device. In FIG. 1, a display device 29 includes an image display unit 31 that displays image data containing variable data in which variable data is inserted into fixed data on an optical image display surface, and controls the image display unit 31 to at least display the variable data. A display control unit 33 for displaying the image data with data in an image, a selection unit 35 for externally switching and selecting the fixed data and / or the variable data, and output control of the image data with the variable data to the display control unit 33 and a main control unit 37 for inputting and outputting controlling these fixed data and or variable data based on a selection instruction from the selection unit 35, which fixed data to the outside by an instruction from the main control unit 37, variable data and also
Has an external input / output unit 39 for inputting / outputting image data that is not displayed as an image, and is formed so that its image display state can be switched and selected from outside.

The display data control device 41 includes a display device 29
And an image data storage unit 45 for storing address and fixed data of variable data, and an external control unit for storing the variable data. And a variable data storage unit 47 for inputting and storing the variable data, and controlling the input / output and storage of the variable data and fixed data and variable data of the image data storage unit 45 and the variable data storage unit 47 according to an instruction from the display device 29. And a sub-control unit 49 that creates at least image data containing variable data and outputs the created image data to the display device 29.

FIG. 2 is a specific block diagram of the image display device shown in FIG. In FIG. 2, the main control unit 37 has a function of outputting fixed data, variable data, or image data containing variable data in which variable data is inserted and combined into fixed data to the display control unit 33. The input / output unit 53, the printer output unit 55, the memory card input / output unit 57, and the communication input / output unit 59 are connected, and have functions to be described later. The details will be described later.

The display control unit 33 is connected to the image display unit 31 which is a known image display means having an optical image display surface such as a liquid crystal display, a plasma display or a CRT display. The image layout of the image display unit 31 is controlled based on the fixed data, the variable data, or the image data containing the variable data. On the image display surface of the image display section 31, a touch panel section 61 connected to the switch detection section 51 is superimposed directly or at some interval.

The touch panel section 61 is similar to the above-described touch panel section 13 of FIG. 4 and, although not shown, has a plurality of switch elements which are turned on by an external touch in a matrix, and has a plurality of adjacent switches. The elements form a switch area corresponding to a predetermined display area on the image display surface of the image display unit 31 and are formed in a transparent state so that the display surface of the image display unit 31 can be seen. The switch detection section 51 detects the position of the switch element that is turned on from the conduction state between the individual electrodes forming each switch element of the touch panel section 61, and outputs the position to the main control section 37.

The main control section 37 has a function of determining which image area in the image display has been operated and which image switching selection instruction has been given based on the detection signal from the switch detection section 51. ing. The external switch detector 63 includes an external setting device 65 externally connected to the display device 29.
And the like, receives an input from the key 67, detects which key 67 is input, and outputs it to the main control unit 37.
The drive section 69 controls lighting of the display LED 71 of the external setting device 65 based on a display signal from the main control section 37.

Accordingly, the main control unit 37 determines which image area in the display image has been operated by operating the key 67 of the external setting unit 65 in addition to the switch detection unit 51, and determines a predetermined display item. It has a function of controlling lighting of the display LED 71. The selector 35 in FIG. 1 is formed by the switch detector 51, the touch panel 61, the external switch detector 63, and the like.

The main control section 37 has a plurality of codes corresponding to the image areas, and determines the operated image area based on the detection signals from the switch detection section 51 and the external switch detection section 63. Input / output unit 5
3 to control the sub-control unit 49 by outputting it to the display data control device 41, fetch fixed data, variable data, or image data containing variable data, and perform output control to the display control unit 33. For example, when an image switching selection instruction is issued, a code for requesting switching to a target image is output from the main control unit 37 via the input / output unit 53. Details of the display data control device will be described later.

The printer output unit 55 controls the printing of image data such as fixed data, variable data, or image data containing variable data, which is instructed to be output from the main control unit 37, on a sheet of paper. Is for outputting similar image data from a detachably mounted memory card (not shown) to the main control unit 37, and storing and controlling image data instructed to be output from the main control unit 37 in the memory card. The communication input / output unit 59 outputs the same image data input through a communication line (not shown) separate from the communication transmission line 43 to the main control unit 37, or outputs the same image data to the main control unit 37.
The communication output control is performed for the image data instructed to be output from.

The main control section 37 transmits the image data read from the memory card input / output section 57 or the communication input / output section 59 to the display data control device 41 by designating an address. In addition to the function of controlling the storage in the variable data storage unit 47 and the image data storage unit 45, the printer output unit 55
It has a function of controlling output to the memory card input / output unit 57 or the communication input / output unit 59. The input / output unit 53 is a communication buffer for adjusting the input / output timing of signals with the communication transmission line 43.

The image data storage unit 45 of the display data control unit 41 is formed of a ROM or the like detachably mounted on the display data control unit 41, and under the control of the sub control unit 49, addresses of variable data and fixed data. Is stored. The fixed data stored in the image data storage unit 45 is fixed data displayed on the image display unit 31, fixed data indicating a fixed image such as a schematic configuration diagram of an injection molding machine or the like or an outer portion of an operation graph ( See FIG. 3, but there is also variable data in FIG. 3.) There are no fixed value parts in the fixed data, setting key data on the image, and forms of printer output forms. There are print format data and data such as the key 67 and the LED 71 of the external setting device 65 connected to the outside of the display device 29.

Although fixed images such as schematic diagrams and operation graphs are changed by switching, the image display does not change due to successive changes in values such as various variable values.
In the present invention, description will be made as fixed data. Further, the fixed data is, for example, an image created by an image creating program such as a personal computer or the like, which is written in a ROM as an image data storage unit 45 by a dedicated writing device, or a memory card input / output unit as described above. 57 and the communication input / output unit 59 in some cases.

Under the control of the sub control unit 49, the variable data storage unit 47 allocates, to a predetermined address, measured value data, target value data, operation data, and other variable data to be inserted into the above-mentioned fixed data from the control unit. And is connected to the sub-control unit 49. The input / output unit 73 is a communication buffer for adjusting timing similarly to the input / output unit 53.

The sub-control unit 49 determines the contents of the code request by referring to the fixed data in the image data storage unit 45 based on the code from the display device 29. For example, if the image switching request, the corresponding fixed Data is stored in the image data storage unit 4
5 and stores the corresponding variable data based on the address designation from the image data storage unit 45 in the variable data storage unit 4.
7 and inserts and integrates variable data into fixed data to form, for example, image data with variable data of FIG.
It has a function of transmitting to the main control unit 37 via the input / output unit 73, the communication transmission path 43, and the input / output unit 53 and instructing display. Further, the sub-control unit 49 constantly checks the variable data in the variable data storage unit 47, and even if the fixed data is not changed, the variable data storage unit 47 according to the content of the code.
Read the variable data sequentially changed from the
It has the function of transmitting to the side.

Next, the operation of the above-described image display device of the present invention will be described. When the touch panel 61 is pressed, the switch detector 51 detects a switch signal from the switch element to detect the position of the touched panel 61 that is switched on, and the main controller 37 displays an image corresponding to the switched on position. The display area is specified to determine what operation has been externally input. When the main control unit 37 detects an instruction to display an image, it outputs a corresponding code via the input / output unit 53, the communication transmission line 43, and the input / output unit 73, and sends the code to the sub control unit 49 of the display data control device 41. Requests the specified image data.

The sub-control unit 49 determines the received code by referring to the fixed data in the image data storage unit 45. If the code is an image switching request, the sub control unit 49 sends the designated fixed data from the image data storage unit 45. While selecting and reading, variable data to be inserted into fixed data is read from the variable data storage unit 47 and inserted and integrated to create, for example, image data with variables as shown in FIG. The data is sent to the main control unit 37 via the input / output unit 53 as drawing command data. Then, the main control unit 37 receives this and controls the layout of the display screen of the image display unit 31 via the display control unit 33.

The sub-control unit 49 controls the reading of the variable data in the fixed data periodically and transmits it to the display device 29 even when the image of the same fixed data is being displayed. Update sequentially. Needless to say, in addition to the pressing operation of the touch panel section 61, switching selection display of variable data and / or fixed data is also possible from the external setting device 65 under the control of the main control section 37. Then, the main control unit 37 includes a memory card input / output unit 57 and a communication input / output unit 59.
The display data control unit 41 transmits the image data read from the display data control unit 41 to the display data control unit 41 by designating an address, and stores and controls the variable data storage unit 47 and the image data storage unit 45 via the sub control unit 49. The output control of the image data from 41 to the printer output unit 55, the memory card input / output unit 57, or the communication input / output unit 59 is as described above.

As described above, in the image display device of the present invention, the image data storage unit 45 and the variable data storage unit 47 are provided on the display data control unit 41 side.
Sub-control unit 49 inserts variable data into fixed data from the image data storage unit 45 and the variable data storage unit 47 to create fixed data containing variable data, and outputs it to the display device 29. Since the unit 37 controls the image display of the fixed data including the variable data as it is, the load of the operation processing of the main control unit 37 of the display device 29 is reduced. As a result, the amount of data handled by the main control unit 37 of the display device 29 can be increased, and the processing speed can be improved.

Further, in the image display device of the present invention, since the data amount and processing speed handled by the main controller 37 of the display device 29 can be improved, the data transmission between the display device 29 and the display data control device 41 can be improved. The transmission process is not limited to the data of one screen, and image data transmission processing other than image display control is possible. For this reason, a printer output unit 55, a memory card input / output unit 57, a host communication input / output unit 59, and the like are added so that the image data can be output to a printer, a memory card input / output, and a host communication input / output in addition to image display control. Operability can be improved without complication.

The output from the input / output unit 39 including the printer output unit 55, the memory card input / output unit 57, and the host communication input / output unit 59 is a so-called screen that outputs the same screen as that output to the image display unit 31. Output of form data tables such as copy, daily report and monthly report, tables and graphs of set values and measured values and necessary data according to elapsed time, process file data, and so-called time-series changes of measured data are recorded. Image data displayed as images, such as trend data
Some image data is not displayed . Further, the memory card input / output unit 57 and the host communication input / output unit 5
As the data input from 9, for example, set values such as temperature and pressure according to the product to be manufactured, parameters such as PID constants, set values necessary for machine operation such as alarm set values, and the like are displayed as images. Image data and / or no image display
There is a new image data .

The selection of the output image data or the input image data is switched and selected via the touch panel 61 or the switch detector 51 or via the external setting device 65 or the external switch detector 63. The image data is stored in the image data storage unit 45 or the variable data storage unit 47 under the management of 37. In the embodiment described above, the key 67
External switch detector 6 via an external setting device 65 having
In the present invention, various selection units can be formed on the display device 29 and the present invention can be implemented, and a push button switch or the like can be used in place of the external setting unit 65. Moreover, the touch panel unit 6
The operations of the device 1, the external setting device 65, and the button switches are performed not only by the operator but also by the operation finger of the operation machine.

[0035]

As described above, in the configuration of the present invention,
In a configuration in which a display device for displaying an image is connected to a display data control device via a communication transmission path, when a display screen is switched and selected from the display device side, a main control unit on the display device side is changed to a sub control unit of the display data control device. The sub-control unit reads the fixed data and the variable data from the variable data storage unit and the variable data storage unit, creates image data containing the variable data, transmits the image data to the display device side, and the main control unit of the display device Since the image data containing the variable data is directly displayed and controlled on the image display unit via the display control unit, the main control unit of the display device does not need to insert the variable data into the fixed data, thereby reducing the processing load. The operation processing speed can be improved without complicating the configuration of the display device, and a large amount of data can be processed. Further, the main control unit whose load is reduced is no longer restricted only to processing of image data for the display screen, and the external input / output unit provided in the display device is provided.
Accordingly, in addition to the effects described above, the image de-displayed image
Data and image data that is not displayed on the image can be input / output to / from the display device under the instruction of the main control unit, and processing operations other than image data display processing are added, for example, printer output, memory card input / output, or host communication. Input / output is possible, and there is an advantage that operability is improved even if only the display device is arranged at a manufacturing site or the like.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing an image display device of the present invention.

FIG. 2 is a block diagram showing an embodiment according to the image display device of FIG. 1;

FIG. 3 is a diagram showing an example of an image displayed on a display device in the image display device of FIG. 1;

FIG. 4 is a block diagram showing a conventional image display device.

[Explanation of symbols]

 1, 29 display device 3, 41 display data control device 5, 43 communication transmission line 7, 37 main control portion 9, 33 display control portion 11, 31 image display portion 13, 61 touch panel portion 15, 51 switch detection portion 17, 45 Image data storage unit 19 Memory card input unit 21, 27, 53, 73 Input / output unit 23, 47 Variable data storage unit 25, 49 Sub-control unit 35 Selection unit 39 External input / output unit 55 Printer output unit 57 Memory card input / output unit 59 Communication input / output unit 63 External switch detection unit 65 External setting device 67 Key 69 LED drive unit 1 LED

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G05B 23/02 G09G 3/00

Claims (1)

(57) [Claims] 1. A display device capable of controlling display of an image and selectively switching an image display state from the outside, and fixed and variable data connected to the display device via a communication transmission line to form the image to be displayed on the display device. An image display device comprising: a display data control device for controlling the display device; wherein the display device is based on an image display unit having an optical image display surface, and at least the fixed data and the variable data-containing image data having variable data inserted therein. a display control unit that controls the image display of the image display unit, a selection unit for changing selection of the fixed data and or variable data externally, prior to input at least the variable data containing image data
While it outputs control to the serial display control unit, and the fixed data and or a main control unit for inputting and outputting control variable data based on a selection instruction from the selection unit, the relative outside by an instruction from the main control unit Fixed
Data, variable data and / or images not displayed
An external input / output unit for inputting / outputting image data , wherein the display data control device comprises: an image data storage unit for storing the address of the variable data and the fixed data; and an external control unit for storing the variable data. A variable data storage unit for inputting and storing the variable data, and storing and controlling the variable data, and combining the fixed data and the variable data of the image data storage unit and the variable data storage unit according to an instruction from the main control unit to at least store the variable data. An image display device comprising: a sub-control unit that creates the image data with data and outputs the image data to the display device.