JPS6234361Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that can easily correct the characters in the erroneous portion after detecting a reading error when reading a magnetic ink card or the like.

2. Description of the Related Art A method of reading a magnetic ink card or the like with a terminal device equipped with a display section, a keyboard, and a reading section and transmitting the read data to a remote location has been put into practical use. In reading the magnetic ink card, etc., in the conventional method, when a reading error is detected,
A method is adopted in which a buzzer sounds and the operator, who learns of the occurrence of an error, re-reads the card. However, with this conventional method,
It is necessary to reread the card, and if the same error occurs twice (for example, when the card's record is damaged), it becomes unreadable. If the content magnetically recorded on the card is a person's name, number, etc., these characters are also written on the card, so even if some of the data that is read contains an error, this error will be corrected as an error. If it is indicated with a symbol, it can be corrected later, and there is no need to read the card again.

The present invention has focused on the above points, and aims to provide a display device that facilitates correction of part of the read data when a reading error occurs in a magnetic ink card or the like.

The present invention consists of a reading unit that reads data, a display memory that stores the read data including unreadable characters, and a count-up every time the read data is received to indicate the storage address of the data to the display memory. In the display device, the display device has an address counter for detecting the position of the read data, a display unit for displaying the contents of the display memory, and a keyboard for inputting correction data. a detection unit that generates an error code together with a detection output when an error is detected; a count memory that records data positions indicated by a counter in the order of error occurrence according to the detection output of the detection unit; and a count memory that records correction data input from the keyboard. It is equipped with a character memory that stores the contents in the order of input, reads the contents of the count memory in the order in which they are recorded and sends them to the address counter, and also reads the contents of the character memory in the order in which they are stored and sends them to the display memory. This display device is characterized in that error data stored in a data position that has been stored is replaced with corrected data.

The present invention will be explained below with reference to the drawings. The drawing is a block diagram illustrating an embodiment of the present invention.
1 is the reading section, 2 is the keyboard, 3 is the correction key, 4
are character keys; 5, 11, and 13 are switching circuits; 6 is a counter; 7 is a count memory for storing erroneous data positions; 8 is a character memory for storing corrected data input from the keyboard;
9 and 14 are display parts, 10 is a detection part, 12 is a write circuit, 15 is a display memory, 16 is a selection circuit, 17 is an address counter, A, B, C, E, F, H are display characters, D, G is a character code, I is an error detection signal, J is a control signal, a, b are contacts, d is an error code, a, b, h, ni, ho, he, to, and chi are address symbols of the display memory 15. be. The switching circuits 5, 11 and 13 in the drawings are normally connected to the contact a side.

In the drawing, data (character code) read by a reading section 1 is sent to a writing circuit 12 via a contact a of a switching circuit 11. The counter 6 and the address counter 17 are counters that increment every time one byte of data is read, for example, when the character code is one byte. Therefore, since the reading of one character advances one step, the address counter 17 selects address I of the display memory 15 by the selection circuit 16, and stores the read character (for example, A) code at that position. The letter A is displayed on the left end of the display section 14. Similarly, each time a character is read,
Since the counters 6 and 17 increment by one step, the characters B to H are sequentially displayed on the display section 14 according to the read character data.

The detection unit 10 has a function of checking the pattern of read data, and generates an error detection signal I when an error is detected. For example, when an error is detected when reading data for the fourth character, the generated error detection signal I causes the contents of the counter 6 (number: 4) to be recorded in the count memory 7, while the switching circuit 1
1 to the contact b side. The detection unit 10 also generates an error code d and sends it to the write circuit 12 via the contact b of the switching circuit 11. Since the address counter 17 is in quaternary format, the error code d is stored at address 2 of the display memory 15.
Therefore, an error display of an x mark appears on the display unit 14. Note that the switching circuit 11 returns to the contact a side.
In the drawing, an example in which errors occur in the fourth and seventh positions is shown.

Upon completion of reading, a buzzer (not shown) sounds to notify the operator. When the operator first presses the correction key 3 on the keyboard 2, the control signal J generated thereby switches the switching circuits 5 and 13 to the contact b side. Next, the operator operates the character key 4 to key in the correct character to be inserted at the character position to be corrected. In the drawing, the characters D and G are input.
Since the character codes of the characters D and G are stored in the character memory 8, the characters D and G are displayed on the display section 9. Next, the number (4) in the count memory 7 is first read out, which reaches the address counter 17 (cleared at the end of reading) via the contact b of the switching circuit 13, and sets the count value to (4). On the other hand, the character D code in the character memory 8 is read out and written into the display memory 15 via the write circuit 12. The writing position is address 2 determined by the contents (4) of the address counter 17. Therefore, display section 1
The fourth display (x mark) from the left of 4 disappears, and the letter D is displayed instead. Since the operation is the same in the case of addressing the display memory 15 (letter G), the explanation will be omitted. In addition, count memory 7 and character memory 8
Since it is a first-in, first-out memory, it is possible to display the correction as described above.

As described above, the present invention has the advantage that after reading a card, etc., after confirming the displayed error position, it is possible to correct characters by simply inputting only the correct characters without indicating the correction position. It is something.

[Brief explanation of the drawing]

The drawing is a block diagram illustrating an embodiment of the present invention, and the symbols used in the drawing are as follows. 1...Reading unit, 2...Keyboard, 3...Correction key, 4...Character key, 5, 11, 13...Switching circuit, 6...Counter, 7...Count memory,
8... Character memory, 9, 14... Display section, 10...
...Detection unit, 12...Writing circuit, 15...Display memory, 16...Selection circuit, 17...Address counter, A, B, C, E, F, H...Display character, D,
G...Character code, I...Error detection signal, J...
...Control signal, a, b...Contact, d...Error code, A, B, H, D, H, H, G, CH...Display memory address symbol.

Claims (1)

[Claims for Utility Model Registration] A reading unit that reads data, a display memory that stores the read data including unreadable characters, and a count-up unit that counts up each time the read data is received;
Detecting the position of read data in a display device having an address counter that indicates a storage address of data in the display memory, a display section that displays the contents of the display memory, and a keyboard that inputs correction data. a counter; a detection unit that checks whether the read data is correct and generates an error code along with a detection output when an error is detected; and a data position indicated by the counter is stored in the order of error occurrence according to the detection output of the detection unit. and a character memory for storing corrected data entered from the keyboard in the order in which they were input, reads the contents of the count memory in the order in which they are stored and sends them to the address counter, and also reads the contents of the character memory in the order in which they are input. By reading out the data in the order of storage and sending it to the display memory, the error data stored in the storage position of the display memory corresponding to the data position read from the count memory is
A display device characterized by replacing the data with the corrected data.