JPS6251475B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control method for accurately and efficiently reading key-in signals from a keyboard connected to a display control device.

Conventionally, a display control device has the configuration shown in FIG. 1, in which a key-in signal from a keyboard 6 is converted into code information by a display control circuit 2, and the code information is stored in a refresh memory 3 designated by a cursor address detection circuit 4 built into the display control device 8. address and displayed it on screen 5. In the refresh memory 3, as shown in FIG. 3, an area 9 consisting of an attribute information section 10' and a code section 11 such as display characters, numbers, or symbols is stored in a group so as to cover the entire surface of the screen. When an operator interactively gives instructions to the computer by keying in various data from an attached keyboard, a key signal is sent to the cursor address detection circuit 4 through the key-in data writing line a each time the operator inputs various data from the attached keyboard. Since it will be entered in area 9 shown, that is, the corresponding address on the screen,
Since there are places where key-in is allowed and places where key-in is not allowed depending on the screen information being displayed, it is desirable to at least protect the key-in from places where key-in is not allowed. When displayed on the screen from the computer, a screen protect identification flag 13 is added to each area of the refresh memory 3 in order to determine the protected area. This identification flag 13
has two types: "protect" and "non-protect". For example, "1" and "0" are assigned. Screen protection is not required for areas where key-in is allowed, so the identification flag 13 is "non-protect", for example, " On the other hand, screen protection is required for areas where key-in is not allowed due to product number, measuring instrument number, or other fixed information, so the identification flag 13 is set to "protect", for example, "1". When keying in data input or cursor movement, the cursor address moves within the area range of the screen protect identification flag "0".

Figures 5-1 and 5-2 are screen display examples in which the area surrounded by dotted lines is non-protected and the other areas are protected. Now, the fifth-
Assuming that the cursor is at A in Figure 2,
When you key in (Planck symbol), enter 〓 in place of A, and then move the cursor to place of B.
If you key in 5, 5 below, the cursor will move to C and D. As described above, since the screen protect function is provided, even if the operator makes a key input without being aware of the cursor position, the input will not be entered into the protected area. The shaded portion and code portion 11 in FIG. 4-1 do not require any particular explanation and will therefore be omitted.

However, the conventional configuration of area 9 had the following drawbacks. That is, when the computer reads the non-protected field data of the refresh memory after continuously keying in and rewriting the corresponding area 9 constituting the refresh memory 3 as described above, it reads all the non-protected areas. Therefore, in the situation shown in Figure 5-1,
1, 1, 〓, 2, 2, 〓, 3, 3, 〓, 4, 4,
In addition, in the state shown in Figure 5-2, 〓, 1, 1,
Read 〓, 2, 2, 〓, 5, 5, 〓, 4, 4.
Therefore, it is not possible to specify the area where the operator newly keyed in in a conversational manner, and it is only after comparing and contrasting the reading results of all the above-mentioned non-protected areas that the change from 33 to 55 can be ascertained. This increases the number of man-hours for reading procedures, program steps for comparison and comparison procedures, and program testing, resulting in a disadvantage that the execution time becomes longer even in actual operation.

The present invention has been made to eliminate these drawbacks, and embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 is a block diagram of a display device according to the present invention. The display control device 8 has a built-in refresh memory 3, and in the memory 3, a combination of an attribute information section and a code section 11 is stored in correspondence with the display screen of the screen 5. It is the same as the conventional example shown in Fig. 1 that area 9 is stored according to
A key-in identification flag 12 is provided as shown in Figure 2,
The number indicating this is changed from 10' in the conventional example to 10, and a key-in data identification flag set and reset circuit 7 is provided in the control device 8. The identification flag 12 takes two values: "key-in" and "non-key-in", and is assigned, for example, "1" and "0". Screen protect identification flag 13
However, a continuous collection of "non-protected" areas, for example "0", is regarded as a unit non-protected field, and a serial number is assigned to each unit non-protected field from the beginning of the refresh memory 3. Identification flag 13 becomes “non-protected” 1
If the areas immediately before and after the area are "protected", even one area has an independent field serial number. All remaining areas excluding the non-protected field will be called the protected field.

Assume that a screen with protected and non-protected fields as shown in Figure 5-1 is displayed by a computer command, and the cursor is stopped at point A in the figure. The information in this line is “K, U, Mo, Ku, C,
〓, 〓, 3, 3'', and the first ``ko, u, mo,
C, C, 〓'' are in the protected field, and the remaining ``〓, 3, 3'' are in the non-protected field. Therefore, if we focus only on the information in this line, the attribute information part 10 and the code part 1 in area 9.
1 becomes as shown in Figure 6-1. In the figure, only the key-in data identification flag 12 and the screen protect identification flag 13 that are related to the present invention are shown in the attribute information section 10. Regarding the screen protect identification flag 13, from the above explanation,
"1" indicates "protection" up to "C, 〓",
The remaining "〓, 3, 3" are "0" and indicate "non-protection". Then, the computer 1 sends a command to the control circuit 2 to turn ON the signal on the key-in data identification flag reset request signal line C, and in response, the key-in data identification flag set and reset circuit 7 sets the key-in data identification flag set and reset signal line d. Then, the key-in data identification flag 12 in the area 9 is set to "non-key-in", for example, "0", and is output for display. The distinction between protected and non-protected areas is determined by the display screen, but regardless of this distinction, the identification flag 12 is set to "non-key-in", which means that the computer executes the KEY IN DATA READ command as described later. In the same way, the key-in data identification flag is set and reset through the signal line d.

Now, when the operator tries to change the information "〓33" in the non-protected field on the third line to "〓55" and keys in "〓, 5, 5", the information shown in Figure 6-2 appears in the specified area. Code “〓、
5, 5'' is written, and the signal on the key-in data identification flag set request signal line b to the key-in data identification flag set/reset circuit 7 is turned ON, so that the key-in data identification flag 12 in the predetermined area is set and reset. Write a "key-in", for example "1", through the signal line d. Cursor address detection circuit 4
shows the position shown in FIG. 5-2 D after this, and as the contents of area 9 change, it is displayed on the screen as shown in FIG. 5-2. At the time of the key-in operation, the computer 1 does not participate in any way, and after the above key-in operation, the computer 1 inputs the refresh memory
When DATA READ is performed, the unit non-protected field serial number including area 9 where the key-in data identification flag is "key-in", for example 1, and a delimiter are added to the data, and the computer 1 is read in the order of "data, delimiter, non-protective field serial number". Referring to Figures 5-2 and 6-2, 〓11, 〓22, 〓55,
The serial numbers of the unit non-protected fields are 1, 2, 3, and 4 in the order of 〓44, and among these, only the unit non-protected field of data 〓55 includes an area where the key-in data identification flag 12 is "key-in". Therefore, this serial number is 3, and in the end “〓
55, delimiter, 3”. If you ignore 〓, the data will actually be 55. In this example, there was only one unit non-protected field that included the keyed-in area, but
If there are other unit non-protected fields that include the keyed-in area, it goes without saying that these fields are also transmitted to the computer 1 in the same way.

After transmitting the unit non-protection field internal dissolution to the computer 1, the display control device 8 turns on the flag reset request signal line C, and then resets the flag via the flag set/reset circuit 7 and the reset/reset signal line d as shown in Fig. 6-3. The key-in data identification flag 12 is set to "non-key-in" as shown in FIG.
Therefore, after this KEY IN DATA READ, without keying in the data, KEY IN DATA is read again.
Even if it is read, no data will be obtained because the unit non-protected field that includes the area where the identification flag 12 is "key-in" no longer exists.

FIG. 7 shows the flow from the computer 1 to transmitting the display data to the display control device 8. In the conventional example, the computer 1 takes steps to save the display information in advance before displaying it on the screen 5 in order to use it for verification later. However, according to the present invention, the dotted line portion of this flow can be omitted. FIG. 8 shows a flow in which the computer 1 identifies and reads key-in data. According to the present invention, the dotted line processing that would be necessary in the conventional example is omitted, and the data of the unit non-protected field including area 9 immediately after the key-in data is read. Since only the key-in information is read, processing of key-in information becomes extremely simple.

In addition, by providing a flag reset key on the keyboard and pressing it, the set/reset circuit 7 is operated, and the key-in data of all areas in the unit non-protect field including the area indicated by the cursor address detection circuit 4 at that time is If you have a function that resets the identification flag 12 and makes it a "non-key-in", even if you make a mistake in data key-in, you can easily correct the key-in.
DATA READ can be avoided.

As a modification of the function of setting the key-in data identification flag to "1", in addition to the signal on the set request signal line b, the signal on the reset request signal line C from the display control circuit 2 is superimposed to set the set/reset signal line d. The display control circuit 2 functions as a judgment function to control the signal, and compares and matches the code stored in the key-in area with the key-in data. If they do not match, set d, but if they match, reset. It is effective in improving the efficiency and accuracy of

As described above, according to the present invention, it is possible to reduce the number of program steps, reduce the number of program steps, and greatly reduce the computer load during actual operation, resulting in economical and labor-saving effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional display device, FIG. 2 is a block diagram of a display device of the present invention, and FIG.
The figure is an enlarged view of the refresh memory, Fig. 4-1 is an enlarged view of the conventional area, Fig. 4-2 is an enlarged view of the attribute information section according to the invention, and Figs. 5-1 and 5-2 are both screens. Figure 5-1 is the display state before the key-in operation, Figure 5-2 is the display state after the key-in operation as 〓55, and Figure 6-1 is the display from the computer. Immediately after screen and area correspondence map, No. 6-
Figure 2 shows the screen and area correspondence immediately after keying in 〓55, and Figure 6-3 shows keying in from the calculator.
Figure 7 shows the reading information when DATA READ is performed and the screen and area correspondence diagram after that, the flow up to transmission to the display control device, and Figure 8 shows the flow of identifying and reading key-in data. 1... Computer, 2... Display control circuit,
3... Refresh memory, 4... Cursor address detection circuit, 5... Screen, 6... Keyboard, 7... Key-in data identification flag set,
Reset circuit, 8...Display control device, 9
... Area, 10' ... Attribute information section (conventional example), 1
0... Attribute information section (present invention), 11... Code section, 12... Key-in data identification flag, 13...
...Screen protect identification flag, a...Key-in data write line, b...Key-in data identification flag set request signal line, c...Key-in data identification flag reset request signal line, d...Key-in data identification flag set, reset signal line.

Claims (1)

[Scope of Claims] 1. Consists of a computer, a display control device, a keyboard, and a screen, and the control device consists of at least a display control circuit, a refresh memory, and a cursor address detection circuit, and the refresh memory includes a plurality of areas. The area consists of an attribute information section and a code section, the attribute information section includes a screen protection identification flag that takes at least two values of "block protection" and "non-protection", and the code section includes characters and numbers. Alternatively, in a display control system that stores symbol codes, A. a key-in data identification flag set and reset circuit is provided in the display control device, and B. a key-in data identification flag that takes two values of "key-in" and "non-key-in" in the attribute information section. C Write screen protect identification flags for all areas configuring the refresh memory according to a display command from the computer, and
Write "Non-key-in" in all of the key-in data identification flags and display them on the screen; D. After displaying on the screen, a key-in from the keyboard operates the display control circuit and the key-in data identification flag set and reset circuit; Store the key-in data identification flag "key-in" and the code in the corresponding area indicated by the cursor address detection circuit, and display the contents on the screen.E Provide a key-in data read command to the computer, and when this command is executed, the above Among the areas constituting the refresh memory, if the screen protect identification flag is consecutively set, a collection of areas called "non-protect" is set as a unit non-protect field, and the unit non-protect field currently stored in the refresh memory is serially numbered. For each read data unit, a unit non-protect field whose key-in data identification flag in the attribute information section is "key-in" at least in one area in the area included in the unit non-protect field is designated as a unit of read data. For all read data, read the content of the data, combine it with a delimiter and a non-protected field serial number, and send it to the computer, and then set all the key-in data identification flags to "non-key-in". A display control system with a key-in data identification function.