JPS5919340B2 - Display control method - Google Patents

Description

[Detailed Description of the Invention] The present invention provides that when the backspace key is pressed to shift the characters displayed on the display in the reverse direction compared to when inputting, the characters located at the edges disappear from the display. The present invention relates to a display control method to prevent such occurrences.

FIG. 1 shows a display section 1 of a display device provided in a conventional bank teller machine.

In this type of display device, characters can be displayed from left to right or from right to left.
Generally, letters like A, B, and C are displayed from left to right.
Numbers representing amounts, etc. are displayed from right to left. The reason why the numbers are displayed from right to left is to make it easier for the operator to see the display of transaction amounts, etc. When correcting part B of the display A, B, C displayed from left to right to D,
If the cursor 2 is moved below B and the letter D is pressed on the typewriter key, the letter D will be displayed instead of the letter B.

The number 12345 displayed from right to left is the number 12335
To correct this, press the backspace key on the keyboard twice and shift the number 12345 displayed on display 1 from left to right by 2 units. As a result, the number 123 is displayed on the display section 1, and the number 45 disappears. Thereafter, when the numbers 3 and 5 are input by operating the keys on the keyboard section, the number 12335 is displayed on the display section 1. Generally, the display part of the equipment at the bank counter is 32
Digit characters can be displayed.

The number of digits usually used is about 10 to 20 digits. As mentioned earlier, if you want to correct a portion of a number entered from right to left, you must use the backspace key to restore the number information displayed in the display system.

At this time, if the lower number information disappears from the display,
Very inconvenient. The present invention is based on the above consideration, and when the backspace key is pressed, characters located at the edge of the display section are displayed on the opposite side of the display section, and character information can be corrected. The purpose of the present invention is to provide a method for controlling the display that can be easily performed.
Therefore, the display control method of the present invention includes a display control section and a display section having m display digits, and when numerical data is input, the display control section displays the display screen of the display section. A display control method for a display device configured to shift the already displayed number by one digit to the left and to display a number corresponding to input numerical data at the right end of the display screen. The shift register device is equipped with a shift register device for storing m pieces of data, a shift register control mechanism, and backspace discriminating means for discriminating whether sent data is numeric data or backspace data, If the data sent by the backspace determining means is determined to be numeric data rather than backspace data, the control mechanism serially inputs the numeric data to the shift register device, and then The m data stored in the shift register device is serially outputted and inputted to the display control section, and the serially outputted data is serially inputted again. If the transmitted data is determined to be backspace data, (m-1) pieces of data are serially outputted from the shift register device, the serially outputted data is serially inputted again, and then the above The shift register device is characterized in that it is configured to serially output m pieces of data stored in the shift register device and input it to the display control unit, and to perform control to serially input the serially outputted data again. It is something. Hereinafter, the present invention will be explained with reference to the drawings. 2A, 2B, and 2C illustrate the operation of the present invention, FIG. 3 is a block diagram of an embodiment of a display device to which the display control method of the present invention is applied, and FIG. 1 shows a flowchart of the device.

In the figure, 1 is a display section, 2 is a cursor, 3 is a display unit, 4 is a data shift direction discriminator, 5 is a backspace discriminator, 6 is a first flip-flop, and 7 is a second flip-flop.
8 is a clock generation control section, 9 is a clock generation section, 10 is an AND circuit with an inhibit gate, 11 is an AND circuit, 12 is an 0R circuit, 13 is a display control section, and 14 is a shift register device. . In the present invention, when the number information 12345 is displayed as shown in FIG.
When you press once, the number information is shifted one digit to the right as shown in Figure 2, and the number 5 that was displayed on the first digit display unit 3 is now displayed on the leftmost display unit 3. Ru.

Assuming that the display unit 1 can display 32 digit characters, the number 5 is displayed on the display unit 3 at the 32nd digit. When the backspace key is pressed again, the arrangement of numbers on display 1 becomes as shown in FIG. 2C. In the state shown in Figure 2 C, if you enter numbers 3 and 5, the display section 1
The number information 12335 is displayed, and the number 45 on the left side disappears from the display section 1. FIG. 3 shows an embodiment of a display device that operates as described above.

The data shift direction determining unit 4 determines key input data and determines whether this data is data to be shifted and displayed from left to right or data to be shifted and displayed from right to left. be.

The backspace discriminator 5 discriminates the backspace code from the right-left shift data. The first flip-flop 6 is set when a backspace code is detected, and is read from the clock generator 9 (m-1).
A clock is issued and set.
However, "m" indicates the number of digits of characters that can be displayed on the display section 1. When a backspace code is detected, the AND circuit 10 with an inhibit gate transfers this backspace code to a shift register device. The clock generation control section 8 has the following functions.

That is, (a) a function to turn the clock generator 9 ON/OFF, (b) a function to count clocks from the clock generator 9, and (c) a function to generate a clock when a NO signal is output from the backspace discriminator 5. and (d) the function of generating a one-pulse clock in the first flip-flop 6 to Q.
When the output is received, the tallock generator 9 generates (m-1) pulses, and (e) after the (m-1) pulses are generated, the second flip-flop 7 is set. It also has the function of causing the clock generator to generate m pulses and resetting the second flip-flop 7 after the m pulses have been generated.

The shift register device 14 is an m-digit shift register device having the number of digits equal to the number of digits "m" of the display section, and the storage unit of each digit can store one character of data, and the storage unit of each digit can store one character of data. Each unit corresponds to a character unit 3 of each digit of the display section 1.

The display control section 13 receives character data from the shift register device 14 and displays it on the character display section 1 defined by this character data.

When the display unit 1 is a plasma display device,
The display control section 13 provides a write address and character data to the plasma display device. When the display unit 1 is a cathode ray tube display, the display control unit 13 includes a memory for temporarily storing data from the shift register device 14, and a memory for storing character data from this memory each time the character data is displayed on one screen of the cathode ray tube. It has a refresh memory that is read out again in the future, and a deflection signal generation circuit for deflecting the beam. Next, the operation of the present invention will be explained with reference to the flowchart shown in FIG.

In FIG. 4, the BS memory corresponds to the first flip-flop 6, and the plasma display data transfer memory corresponds to the second flip-flop 7. When one backspace code is input by pressing the backspace key on the bank teller device, this backspace code is detected by the backspace discriminator 5 and stored in the backspace memory. A certain first flip-flop 6 is set.

As a result, the clock generation control section 8 knows that (m-1) shift pulses should be generated, turns the clock generation section ON, and causes the clock generation section 9 to generate (m1) shift pulses. . The contents of the shift register device 14 are shifted by the shift pulses from the clock generator 9, and after (m-1) shift pulses are generated, the character data stored in the K-th digit storage unit is shifted. is the number (K
-1) The character data stored in the memory unit of the digit digit and stored in the first memory unit is stored in the memory unit of the m-th digit. After (m-1) shift pulses are generated, the first flip-flop 6 is set, the second flip-flop 7 is set, and the AND circuit 11 is opened. The clock generation control section 8 causes the clock generation section 9 to generate m shift pulses, and controls the clock generation section 9 to generate m shift pulses.
The character data of each digit of the shift register device 14 is sent to the display control section 13 by the pulse. After generation of m shift pulses, the second flip-flop 7 is reset. After receiving the character data, the display control unit 13 displays characters defined by the character data on the display unit 1. At this time, the character determined by the character data in the Kth digit storage unit of the shift register device is displayed on the Kth digit display unit of the display section 1.
Shift data other than the backspace code is stored directly in the shift register device 14 via the AND circuit 10 and the 0R circuit 12.

At this time, the character data already stored in the shift register device 14 is shifted by one digit, and the input character data is stored in the first digit storage unit. As is clear from the above explanation, the display control method of the present invention allows the lowest digit to disappear when the backspace key or the like is pressed to shift the digits on the display section 1 in the opposite direction to the input direction. Since the digits are displayed on the opposite side of the display unit, when the operator corrects the numbers, it is very easy to perform the correction process.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the display section of a conventional display device, Figure 2A,
3 and 4 are diagrams explaining the display control system of the present invention, FIG. 3 is a block diagram of one embodiment of the present invention, and FIG. 4 is a flow chart. 1... Display section, 2... Cursor, 3...
...Display unit, 4...Data shift direction discrimination section, 5...Backspace discrimination section,
6 and 7 are flip-flops, 8... tarlock generation control section, 9... clock generation section, 10...
...AND circuit with inhibit gate, 11...
...AND circuit, 12...0R circuit, 13.
. . . Display control unit, 14 . . . Uft register device.

Claims (1)

[Claims] 1 comprising a display control unit and a display unit having m display digits, wherein the display control unit moves the already displayed number on the display screen of the display unit one digit to the left when numerical data is input; A display control method for a display device configured to perform control for shifting and displaying numbers corresponding to input numerical data at the right end of the display screen, the display control method comprising: m
The shift register control mechanism includes a shift register device for storing data of 1, a shift register control mechanism, and a backspace discrimination means for discriminating whether sent data is numeric data or backspace data. If the data sent by the backspace determining means is determined to be numeric data rather than backspace data, the numeric data is serially input to the shift register device, and then the shift register device Performing control to serially output the m pieces of data stored in the device and input it to the display control unit, and to serially input the serially outputted data again;
If the data sent by the backspace determining means is determined to be backspace data,
Serially output (m-1) pieces of data from the shift register device, serially input the serially outputted data again, and then serially output the m pieces of data stored in the shift register device to display the above. A display control system characterized in that the display control method is configured to perform control for inputting data to a control unit and serially inputting data that has been serially outputted again.