JP2709141B2 - Graphic display device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a graphic display device capable of drawing desired images such as figures, graphs, and characters on an image display unit such as a CRT or a plasma display. is there.

2. Description of the Related Art Conventionally, there has been a system for connecting a display terminal to a host computer online to monitor an operating state of a plant including, for example, tanks, piping, valves, and the like, and a progress of a process in a machine factory. It has been proposed (for example, see Japanese Patent Publication No. 52-6130).

In this system, monitoring data from an instrumentation system such as a tank level meter and a limit switch for detecting opening and closing of a valve is once sent to a host computer. The host computer processes the monitoring data according to a preset procedure, creates a control command for displaying an image, and sends the control command to the display terminal.

In the display terminal, images such as a plant system diagram and a factory process diagram are created in advance, and those graphic data are registered in the RAM in the terminal, and in an operation mode connected to the host computer, An image corresponding to the control command is called on the screen.

Conventionally, a terminal is equipped with a reader / writer capable of writing and reading a memory card incorporating an IC chip. It has been proposed that a typical image block (hereinafter, referred to as a standard library) is created and registered in a memory card, and this memory card is provided to a user. In this case, the user can read out a desired standard library from the memory card, make a necessary change to the image while displaying it on the screen, and quickly draw a desired image block with a small number of procedures.

(Problem to be solved) However, if the user who is unfamiliar with the operation deletes the data of the memory card by mistake or performs an image change process once to the standard library registered in the memory card, the standard live The rally can no longer be reproduced, and in the subsequent image block creation, complicated procedures must be executed from the beginning.

An object of the present invention is to store the standard library in a data storage unit such as a ROM in the apparatus on the manufacturer side, and when a user performs drawing using the standard library, the standard library is stored from the data storage unit. An object of the present invention is to provide a graphic display device capable of performing image change processing on desired graphic data in the memory card after transferring the rally to the memory card.

It is another object of the present invention to provide a graphic display device in which when the memory card is initialized, the standard library is automatically transferred to the memory card upon completion of the initialization.

(Means for Solving the Problems) As shown in FIG. 1, a graphic display device according to the present invention comprises an image display unit (6) and one or more standard libraries prepared in advance as graphic data. The stored data storage means (61) and the graphic control means (6) for converting the graphic data of the data storage means into a video signal and sending it to the image display section (6).
2) a read / write means (63) having a card socket to which a memory card can be attached and detached to read and write data to and from the memory card; and from the data storage means (61) to the read / write means (63). Transfer control means (64) for controlling the data transfer, and initialization means (65) for generating data for initializing the memory card.

(Operation) With a memory card inserted into the card socket of the read / write means (63), when a command for instructing the initialization means (65) is input, first the initialization means (65) Initialization data is output, and the data is written to the memory card by the read / write means (63), and the memory card is initialized.

When the initialization is completed, information indicating the completion of the initialization is sent from the initialization means (65) to the transfer control means (64). As a result, the transfer control means (64) reads the graphic data representing the predetermined standard library stored in the data storage means (61) and sends it to the read / write means (63). The graphic data is written to the memory card by the reading / writing means (63).

Thereafter, when performing image change processing on the standard library, the standard library is read from the memory card by the read / write means (63) and displayed on the image display unit (6) by the graphic control means (62). .

If a desired change is made to the standard library drawn on the image display section (6), the data is changed on the memory card, and the desired image block is changed without changing the standard library of the data storage means. Can be drawn.

(Effect of the Invention) According to the graphic display device of the present invention, the memory card is initialized simply by inputting a single command for instructing the memory card to be initialized, and then the data is automatically transmitted. The standard library is transferred from the storage means to the memory card, and the preparation for image change processing on the memory card is completed. Therefore, the user can safely transfer the standard library to the memory card and use it without giving any consideration to the transfer state of the standard library or prevention of data corruption.

Further, even if the image block in the memory card once created becomes unnecessary, by initializing the memory card, drawing based on the standard library becomes possible again, and the user's labor is remarkably reduced.

(Example) The example is intended to illustrate the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof.

Hereinafter, an example in which the graphic display device of the present invention is implemented in an instrumentation monitoring system of a plant or the like described above will be described in detail with reference to the drawings.

The image display control device (1) is connected to the host computer (2) online as shown in FIG. 2, and has a communication controller (13) for receiving data from the host computer (2) and a keyboard (12). (4), a CPU (15), a ROM (4) in which system programs (FIGS. 8, 9, and 10) are registered, and various RAMs described later. (41) (42) (43)
(44) A register (3) for controlling data read timing by the communication controller (13) and a graphic controller (5) for controlling a drawing operation of the display (11). A well-known reader / writer (16) having a well-known card socket, such as an IC card, to which a memory card can be attached and detached is attached to the device casing, and is connected to a graphic RAM (43).

In the ROM (4), a plurality of standard libraries are stored as graphic data in addition to the system program, and these graphic data can be called by a file number for each library.

The event RAM (42) is a memory for storing a plurality of display change processing words described later, and the graphic RAM (43) is
A memory for previously creating and registering a base screen to be displayed on the display (11), various image blocks to be displayed on the base screen, and the like. Video RAM (4
4) When the graphic operation of the display (11) is controlled by the graphic controller (5),
This is used to develop the data in the RAM (43) into an image on the screen.

The image display control device (1) also has a function as a conventional general graphic display device, but illustration and description of these well-known configurations are omitted.

On the other hand, the host computer (2) is a general digital computer or a programmable controller or the like, and has an input circuit (21) for receiving monitoring data from the instrumentation system and a memory for storing the received monitoring data in accordance with a predetermined procedure. And an output circuit (23) for reading data from the processing circuit (22) and sending the data together with the strobe signal SR and the start signal ST to the image display control device (1). I have it.

FIG. 8 shows the operation of the apparatus accompanying the initialization of the memory card.
It is executed by the computer program registered in (4).

As shown in FIG. 8, when a memory card is set in the card socket and an initialization command is input, "0" is first written to all memory areas of the memory card to initialize the memory card.

Thereafter, the graphic data of the standard library stored in the ROM (4) of FIG. 2 is read out and sent to the reader / writer (18).

As a result, the graphic data of the standard library is registered in a predetermined area of the memory card set in the card socket.

FIG. 3 shows the correspondence between the address space of the state information storage memory (24) in the host computer and the address space of the state information RAM (41) of the image display control device. As shown in the figure, only the necessary addresses (from address 0 to address N) are provided with 8-bit length storage units composed of the 0th to 7th bits.

The monitoring data supplied to the host computer (2) is converted into binary data of "0" and "1" (state information MD) by a procedure preset in the processing circuit (22).
.., The first bit from the 0th address,..., The 0th bit at the first address,.

When one cycle of monitoring data from the instrumentation system is stored in the memory (24) of the processing circuit, the data in the memory (24) is transmitted to the image display control device (1) by the operation of the output circuit (23). Then, it is stored in the state information RAM (41) via the communication controller (13). At this time, the data stored in the memory (24) of the host computer is moved to the storage location indicated by the same address and bit in the status information RAM (41) of the image display control device, so that the contents of both memories are the same. , Read and write operations are controlled.

FIG. 4 shows the configuration of the display change processing word W stored in the event RAM (42). The configuration of the display change processing word W for changing the display color of the valve as shown in FIGS. 5 to 7 will be specifically described.

The base screen of FIG. 5 is composed of three display blocks showing a tank (7), a pipe (71) and a valve (72). The tank (7) and the pipe (71) are created as fixed images on the display (11) as shown in FIG. 6, and the graphic data is stored in the graphic RAM (43) in the file number F.
1 (for example, number 1). Also, the valve (7
As shown in FIG. 7, 2) is created as a separate image block that can be called relatively to the fixed image, and the file number F2 (for example, 700) is stored in the graphic RAM (43).
Registered with.

When the fixed image shown in FIG. 6 and the image block shown in FIG. 7 are created, a standard library of valves and tanks registered in advance in the ROM (4) shown in FIG. After transferring to the memory card by the procedure, a desired standard library is read from the memory card. As a result, the graphic data of the standard library is sent as a video signal to the display (11) and displayed on the screen. Therefore, if an image change operation is performed using a well-known graphic function in this state, the graphic data of the memory card is modified, whereby a desired image block can be obtained easily and quickly. The corrected data is registered in the graphic RAM (43).

When the display change processing word W is registered in the event RAM (42) of FIG. 4, the apparatus is set to the drawing mode, and the registration procedure shown in FIG. 10 is performed by operating the keyboard (12).

By setting the file number F1 of the fixed image (here, No. 1) as a key, the file number is stored at the address 0 of the event RAM (42) shown in FIG.

Next, the address A1 in the status information RAM (41) in which the status information (for example, "1") for calling the fixed image in FIG. 6 should be stored.
And the bit address B1 (for example, A1 = 0, B1 = 0), these data are stored in the first and second addresses of the event RAM (42), respectively.

Further, the bits of the status information stored in the address A1 and the bit address B1 of the status information RAM (41) are ON ("1") or OF.
F (“0”) O indicating when the fixed image is called
N / OFF data S (for example, “1”) is set. The data is stored at the third address of the event RAM (42).

Next, the type of image block (event) to be changed in display, that is, whether a mark such as a valve is displayed, a library having a more complicated configuration than the mark, a time display, or the like is distinguished. (For example, "1" in the case of displaying a mark). The data is the event RAM (42)
Is stored at the fourth address.

At the position near the valve (72) as shown in FIG.
To display the event name TN, enter the display start position of the event name on the screen, and then key in "Valve". These data are stored at addresses 5 and 6 of the event RAM (42).

Next, the address A2 and the bit address B2 (for example, A2 = 0, B2 = 1) in the status information RAM (41) in which the status information for changing the display color of the image block of the valve in FIG. By setting these data, the event RAM (42)
Are stored at addresses 7 and 8, respectively.

Furthermore, the registration file number F2 of the valve image block
By setting a key (here 700) as a key, the file number is stored in the ninth address of the event RAM (42).

Then, the status information of the address A2 and the bit address B2 is
When ON (“1”) and OFF (“0”), key-in ON / OFF color information ZD indicating which color each mark (bulb) is applied to. For example, a red designated key is operated when ON, and a green designated key is operated when OFF. The ON / OFF information ZD is the event RA
Stored at the 10th address of M (42).

Finally, coordinate data HD (X and Y shown in FIG. 5) indicating the display position of the mark (valve) on the screen is input. The coordinate data is stored at the eleventh address of the event RAM (42).

Next, the operation in the operation mode in which the image display control device (1) is connected to the host computer (2) will be described.
This will be described with reference to FIG.

When the apparatus is turned on, it is first determined whether or not the apparatus is online with the host computer. If NO, the drawing mode is set.

If YES, that is, if the state information MD has been written to the state information RAM by data communication from the host computer to the image display control device, the event RAM (4
The contents of the plurality of display change processing words W stored in 2) are sequentially read, and the display operation described later is repeatedly executed.

In the display operation, first, based on the screen call address A1 and the screen call bit B1 included in the read display change processing word W, the state stored in the state information RAM (41) at the address (A1, B1). The value of the information MD is read, and the read value is compared with the value of the screen call ON / OFF data S included in the display change processing word. If they do not match, it is determined that the host computer (2) has not instructed a display change, and the process returns to the data communication process.

When the state information MD matches the ON / OFF data S, a fixed image is called from the graphic RAM (43) based on the file number F1 included in the display change processing word W.

Next, the mode is branched according to the type of the event included in the display change processing word W, and the process proceeds for each mode.
For example, in the case of displaying a mark (valve), based on the event name start position and the event name TN included in the display change processing word,
In the screen position specified by the event name start position, the event name TN
Draw (“Bulb”).

Thereafter, based on the event display call address A2 and the event display call bit B2 included in the display change processing word W,
Status information data from address (A2, B2) in status information RAM (41)
The MD is read, and it is determined whether the value of the read data MD is “ON” or “OFF”.

If the determination result is “ON”, the display change processing word W
Image blocks (valves) registered in the graphic RAM (43) based on the registration file number F2 included in the
Is read, and further at the screen position specified by the coordinate data HD included in the display change processing word W,
The image block (bulb) is displayed in the color (red) when the ON / OFF color information is "ON". If the determination result is “OFF”, the registration file number F2 included in the display change processing word W
The graphic data of the image block (valve) registered in the graphic RAM (43) is read out based on the above, and the ON / OFF color is displayed at the screen position specified by the coordinate data HD included in the display change processing word W. The image block (bulb) is displayed in the color (green) when the information is “OFF”.

Thereafter, the process returns to the data communication process, and continues the display change based on the next display change processing word W.

By the above procedure, the screen of the display (11) changes every moment according to the status information sent from the host computer (2).

In the image display control device (1), the host computer (2) converts the monitoring data from the instrumentation system into status information and stores it in the memory (24) shown in FIG. However, most of the programs use monitoring data as status information in memory (24)
Is a process of moving to a predetermined address, so that it is extremely easy to create a program.

Also, the memory card is initialized and the standard library is transferred to the memory card simply by inputting a command for initializing the memory card, so that even an unskilled user can easily operate the memory card. It is possible to create images using the standard library. Also, even if the memory card is damaged, the standard library remains stored in the ROM (4), so by performing the above-described initialization operation, drawing based on the standard library on the memory card can be performed again. Becomes

The drawings and description of the above embodiments are intended to illustrate the present invention and should not be construed as limiting the invention described in the claims or reducing the scope thereof.

Further, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a graphic display device according to the present invention, FIG. 2 is a block diagram showing a specific configuration of an image display control device and a host computer, and FIG. FIG. 4 is an explanatory diagram showing a correspondence relationship between a memory and a state information RAM, FIG. 4 is a diagram showing a configuration of a display change processing word stored in an event RAM, FIG. 5 is a diagram showing a display screen in an operation mode, FIG. FIG. 7 is a view showing a fixed image portion of the screen, FIG. 7 is a view showing an image block to be changed in display, FIG. 8 is a flowchart showing an operation accompanying the initialization of the memory card, and FIG. FIG. 10 is a flowchart showing the operation in the drawing mode. (1) Image display control device (11) Display (16) Reader / writer (7) Memory card

Claims (1)

(57) [Claims] 1. An image display unit (6), a data storage means (61) in which a plurality of image libraries prepared in advance are stored as graphic data, and a graphic data of the data storage means are connected to a video signal. In a graphic display device having a graphic control means (62) for converting the data into an image and sending it to an image display unit (6), a card socket for attaching and detaching a memory card is provided. Read out /
Writing means (63), transfer control means (64) for controlling data transfer from the data storage means (61) to the reading / writing means (63), and initializing means for generating data for initializing the memory card. Initialization means (65), the initialization means (65) sending the initialization data to the read / write means (63) in response to the input of a command for instructing initialization of the memory card, Information indicating the end of initialization is sent to the transfer control means (64), and in response to this, the transfer control means (64) stores one or more predetermined libraries stored in the data storage means (61). Extract the graphic data to be represented and send it to the read / write means (63);
A graphic display device for writing extracted graphic data to a memory card inserted in said reading / writing means (63).