JPS6365945B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a CRT display device (hereinafter referred to as "CRT") connected to a computer, and particularly relates to a method for protecting the CRT screen.

Generally, in a system that uses a CRT to input data into a computer, a CRT with a hardware screen protection function is used, and when displaying a data input screen on the CRT, the input guidance section etc. Protect areas other than the input field so that when the operator writes data from the CRT keyboard, the cursor does not move to areas other than the input field.

Furthermore, when designing a CRT screen, ease of viewing and ease of input are contradictory, and ease of viewing is generally given priority.

Furthermore, in recent years, CRT viewers have become more dense, character CRTs with more than 4000 characters have become mainstream, and the amount of data input using CRTs is also increasing.

However, in the past, regarding screen protection to facilitate input operations by operators, only one screen per screen was used.
On a screen that only supports patterns and respects visibility, a problem arises in that the cursor does not necessarily move in the order in which the operator attempts to input. That is, the screen protect function, which was originally introduced to simplify the operator's input operation, is currently complicating the operator due to the large amount of input data.

In view of the above-mentioned current situation, the present invention groups input fields for one CRT screen, removes the protection of the input fields for each group according to the operator's input operation, and effectively reduces input per screen. Reduces the number of fields and eliminates the complexity of operator operations.
The purpose is to reduce the time involved in CRT input.

In this protection switching method, for each screen in advance,
One or more protect patterns are registered, and when an operator requests protection switching from a CRT keyboard, the protect patterns are sequentially changed.Hereinafter, a detailed explanation will be given based on an embodiment.

FIG. 1 shows the minimum system configuration when applying the present invention. The electronic computer 11 is
The CRT control section 12 performs the CRT screen protection switching process of the present invention, and controls the CRT viewer 13 and the CRT keyboard 14. The CRT viewer 13 displays a data input screen and the like, and also displays input data from the CRT keyboard 14 via the CRT control section 12. The CRT keyboard 14 includes an interrupt key that interrupts the computer 11 via the CRT control unit 12;
Rewrite the contents of the internal refresh memory of 2. That is, data input keys that can display data on the CRT viewer 13, and the CRT
It has a cursor control key that can change the position of the cursor on the viewer 13. In the present invention, one of the interrupt keys is used exclusively as a "protection switching key." In addition, one of the cursor control keys and a key (hereinafter referred to as the "TAB key") that, if pressed repeatedly without moving the cursor to the protected part of the screen, will position the cursor to the frontmost character in the unprotected part. (call) shall be provided.

Screen protection means that when inputting data from the keyboard, the cursor indicating the input area is not located at the specified character position. In the CRT of this embodiment, the CRT control unit 1
2 contains a refresh memory that stores data to be displayed on the CRT viewer 13.
FIG. 2 shows the configuration of the refresh memory.
The protect designation section 1 is a bit that designates protection or non-protection of the corresponding character. The color designation section 2 is a bit that determines the display color of the corresponding character. The character designation part is a bit that determines the display character of the corresponding character.
There are 16-bit refresh memories with this configuration for all the characters in the CRT viewer 13.

Figure 3 shows an example of a CRT screen.
a shows a conventional technique. Conventionally, 1
Since there was only one protect pattern for each screen, input fields 51 to 75 are unprotected areas, and the other shaded areas are protected areas. In this state, when the operator presses the TAB key on the CRT keyboard, the cursor position will be
The cursor moves horizontally from the upper left to the lower right of the screen, from the front of the input field 51 to the front of the input field 61 to the front of the input field 71 to the front of the input field 52. If the order of data input by the operator is input field 51 → 61 → 71 → 52, etc., no problem will occur, but input field 51 → 52 → 53 →
In the case of 54→55→61→62..., the operator simply needs to press the TAB key to move the cursor to the input field. In this embodiment, as shown in FIG. 3e, the screen is divided into three areas, that is, the first input group 91, the second input group 92, and the third input group 93, and for each area, the input field is unprotected and other. This protection was applied.

First, b is used to input only the first input group 91. Only the input fields 51 to 55 are non-protected parts, and the other parts including the input fields 61 to 75 are protected parts. At this time, if you press the TAB key, input fields 51 → 52 → 53 → 54 → 55
The cursor moves vertically. That is, the operator can make inputs in the input fields 51 to 55 without pressing the TAB key.

After the operator completes data input in the input fields 51 to 55, the operator presses the protect switching key. The protection switching key interrupt is transmitted to the computer,
Inside the computer, a processing program for protection switching starts processing. A schematic flowchart of this process is shown in FIG. First, the pattern following the protected pattern applied to the CRT viewer is read. These protect patterns are registered in advance. (Step 101). Next, read the contents of the refresh memory in the CRT control section. This is the data itself currently displayed on the CRT viewer, and the protect designation section 1 also stores the information of the first input group. (Step 102). The protect designation section 1 of the contents of this refresh memory is rewritten to the protect pattern read in step 101. (Step 103). This protect specification part 1
Only the rewritten information is transferred to the refresh memory. (Step 104). Now the CRT
Screen protection has been switched for the next second input group 92. Furthermore, the current protect pattern is stored. (Step 105). this is,
This is for taking out the next protect pattern when the protect switching key is pressed next, and in the embodiment, each protect pattern is managed by being assigned an independent number.

Now, FIG. 3c shows how the protection is switched for the second input group 92. In Figure 3c, only input fields 61 to 65 are unprotected, and input field 5
The other parts including 1 to 55 and 71 to 75 are protect parts. Therefore, the operator must fill in the input fields 61-6.
5 can be input in order.

Similarly, when inputting the third input group, press the protect switch key to make only the input sections 71 to 75 unprotected, as shown in Fig. 3d.
Input processing of the input units 71 to 75 can be input sequentially in the vertical direction.

As an effect of this embodiment, the cursor skip using the TAB key, which originally only has the function of moving in the horizontal direction, can apparently move in the vertical direction.
In addition, the operator can now operate the CRT keyboard during input processing by simply pressing the protect switch key twice, eliminating the hassle of having to press the TAB key many times to position the cursor in the corresponding input field.

The CRT screen in FIG. 5 is another embodiment of the present invention.

Input fields 31, 33, 34, 37-39 are mutually related data, and input fields 32, 35, 3
6, 41 to 44 are also mutually related data, but they are completely independent.

Now, when modifying the data in the input field 31, there is no problem even if the input fields 33, 34, 37-39 are modified, but there is a risk of inconvenience if the input fields 32, 35, 36, 41-44 are modified. There is. At this time, applying the present invention, input fields 31, 33, 34, 37
~40 is the first input group, and input fields 32 and 3
5, 36, 41 to 44 are the second input group.

In this modification, input data can be regulated, so there are effects such as being able to prevent operational errors by the operator.

According to the present invention, by providing multiple protections for a CRT1 screen, it becomes possible to move the cursor according to the order of input by the operator, improving operability for the operator and preventing operator mistakes. It has the effect of being able to prevent accidents from occurring.

A further advantage of the present invention is that it makes it possible to change the cursor movement pattern at will without adding any special hardware by using the screen protection hardware function implemented in general CRTs. .

[Brief explanation of drawings]

Figure 1 shows the system configuration necessary for the present invention;
The figure shows the bit configuration of a CRT refresh memory, and FIG. 3 shows the screen protection of the present invention. FIG. 4 is a schematic processing flowchart of a processing program at the time of protection switching, and FIG. 5 is a modification of the present invention. DESCRIPTION OF SYMBOLS 1...Protect specification section, 2...Color specification section, 3...Character specification section, 11...Electronic computer, 12...CRT control section.

Claims (1)

[Claims] 1. For a CRT display with a screen protect function, multiple protect patterns are registered in advance for each screen, and protection pattern changes are made sequentially in response to protection switching requests from the CRT keyboard. Based on the change settings, A CRT screen protection switching method characterized by displaying an unprotected area of a CRT screen on the display screen.