JPH0155116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses an optical sensor to detect lines that have already been printed in a passbook handling device such as a passbook entry machine used in banks and other financial institutions, in order to determine the line on which transaction data should be printed. Regarding how to read.

Generally, passbook handling devices used in banks, etc., optically read special symbols in specific columns of the passbook, such as the date column or balance column, in order to find the line position to be printed and determine which line has already been printed. .
By the way, in a horizontal bankbook 1 as shown in Fig. 1, each page is divided into an upper part 1a (hereinafter referred to as a page) and a lower part 1b (hereinafter referred to as a lower page) centered around a binding 1c.
The reading conditions are different for each page. That is, in the case of the upper page, past transaction data is usually printed on the back side, so there is a risk that this can be read through the front side, whereas in the case of the lower page, the back side is completely blank, so there is no such risk.

Conventionally, regardless of the difference in the above reading conditions between the upper and lower pages of a passbook, the threshold of the print presence detection signal was set according to the upper page with stricter reading conditions, and the printing on the back side was detected when reading the upper page. Even if it is a little transparent, it will not be misread.
However, if the threshold value for reading printed lines is set strictly in this way, the reading margin will become smaller on the lower page side even though there is no influence from printing on the back side, and the reading margin will become smaller due to wear of the ink ribbon, etc. When the print density becomes lighter, it becomes difficult to detect printed lines.

The purpose of the present invention is to prevent and stabilize the misreading of the printed lines on both pages in view of the difference in reading conditions between the upper and lower pages of a passbook. The threshold value for obtaining the data signal of printing presence/absence from the output signal can be switched between the upper page where transaction data is printed on the back side and the lower page where transaction data is not printed on the back side, and the transaction data is printed on the back side. The upper page, which is printed on the back side, uses a higher threshold that can eliminate the influence of transaction data on the back side, while the lower page, where no transaction data is printed on the back side, uses a lower threshold value.

The present invention will be explained below with reference to the drawings.

FIG. 2 is a block diagram showing a schematic configuration of the main parts of an embodiment of the present invention, and 3 is a block diagram showing a passbook 1 by a photoelectric conversion element.
In order to read special symbols such as hyphen marks in the date field, a reading sensor is provided facing the date field passing position on the passbook feeding path;
5 is an amplification and shaping circuit that amplifies and shapes the output signal of the reading sensor 3, and 5 is an amplification and shaping circuit that compares the read signal output from the amplification and shaping circuit 4 with a threshold voltage VS to determine whether the read position has a predetermined concentration or higher. A comparator that outputs a logic signal indicating whether or not to print. 6 is a print presence/absence determination circuit that determines the presence or absence of printing from the output signal of the comparator 5 using the sample signal _S1 , and outputs a digital signal indicating the determination result. 7 is, for example, It is mainly composed of a microprocessor and a memory that stores the programs it executes, and controls a series of bankbook processing operations such as printing and feeding operations for bankbook 1, or read/write operations for the bankbook 1 if it has a magnetic stripe. Passbook processing control circuit, 8 is a higher threshold voltage VS ₁ and a lower threshold voltage due to conduction and non-conduction of transistors TR ₁ and TR ₂
A threshold voltage supply circuit supplies either one of VS ₂ to the comparator 5, and 9 is a passbook processing control circuit 7.
The two transistors TR ₁ and TR 2 are activated in response to the supply of the changeover signal _{S 3 to} which the passbook read signal S ₂ is added.
LD is a switching circuit that selectively switches the conductive transistor, and LD is read position information obtained by monitoring the distance that the passbook 1 has traveled from a predetermined reference position in a passbook feeding device (not shown). The information is transferred from the device to the passbook processing control circuit 7.

In the above configuration, when detecting a printed line, if the bankbook 1 is run in the direction of arrow A in FIG. 2, the bankbook 1 will pass in front of the reading sensor 3 from the last line side. Therefore, initially, the lower page 1b of the bankbook 1 is read by the reading sensor 3, but while the lower page 1b is facing the reading sensor 3, the switching circuit 9 sends out a conduction signal of the transistor _TR2 , and the lower threshold value is A voltage VS ₂ is generated from a threshold voltage supply circuit 8. The comparator 5 compares the output signal of the read sensor 3 with this lower threshold voltage VS ₂ as a reference voltage. Therefore, while the reading sensor 3 is reading the lower page 1b, the printed lines can be read even if the output signal level of the reading sensor 3 is a little low due to the low print density.
The lower limit of readable print density becomes wider. If the printed line is not on the lower page 1b, the bankbook 1 will further travel in the above direction, and the upper page 1a will pass in front of the reading sensor 3. Change of the page to be read of the bankbook 1 is instructed by the above-mentioned position information to be read. Since the distance between the reading sensor 3 and a predetermined reference position is known in advance, the position information to be read can be determined based on the travel distance of the bankbook 1 from the reference position to which position of the bankbook 1 is currently facing the reading sensor 3. Since it is easy to know whether the page is in the page or not, the location is indicated in the form of the number of lines or the top and bottom pages. When detecting that the read position of the bankbook 1 has moved from the lower page 1b to the upper page 1a based on this read position information, the bankbook processing control circuit 7 sends out a threshold switching signal _S3 . The switching circuit 9 thereby switches the transistor TR ₂ of the threshold voltage generating circuit 8.
At the same time, the transistor TR ₁ is made non-conductive and a conduction signal is sent to the transistor TR 1 to supply the higher threshold voltage VS ₁ to the comparator 5.

In this way, when the portion to be read by the reading sensor 3 is transferred to the upper page, the reading threshold voltage for detecting the presence or absence of printing is switched to a higher value. As an example, when reading the upper page 1a on which date data 2 and past date data 2a are printed on the back page as shown in FIG. A read signal as shown in Figure 3a is generated. This read signal is caused by the back page date data 2a passing through the reading sensor 3 before the regular date data 2, and in addition to the regular read signal waveform _W1 , there is a nozzle signal waveform _W2 with a lower level than this. including, but
The noise signal waveform W ₂ is removed by comparison with the threshold voltage VS ₁ in the comparator 5, and the output signal shown in FIG. 3b is obtained from the comparator 5. Incidentally, if the reading threshold voltage is not switched as described above and is the same as that of the lower page 1b, the output signal of the comparator 5 will be as shown in FIG. 3c.

The signal shown in FIG. 3b, from which the influence of back printing has been removed, is applied to the print presence/absence determination circuit 6, and is used to determine the print presence/absence of that line based on the sample signal _S1 given to each line from the passbook processing control circuit 7. As a result of this determination, a digital signal indicating the presence of printing is supplied to the bankbook processing control circuit 7, and the line facing the reading sensor 3 at this time is determined to be the last printed line. After reading the last printed line, the bankbook 1 is fed a predetermined distance from the position at the time of reading, and the next line is positioned at the printing position. When printing is completed, the passbook processing control circuit 1 again sends out the threshold switching signal _S3 to switch the threshold voltage back to the original _VS2 , in preparation for the next passbook reading.

As explained above, according to the present invention having the above configuration, the reading threshold is adjusted to suit each condition for the upper page on which transaction data is printed on the back side and the lower page on which transaction data is not printed on the back side. Since the level is switched, misreading of the upper page due to printing on the back page is prevented, while the readable print density range of the lower page is widened, which has the effect of stabilizing the reading of printed lines on both pages.

In the above embodiment, the bankbook is fed so that the bottom side passes through the reading sensor first, but it goes without saying that the present invention can be carried out even when the bankbook is fed in the opposite direction.

In addition, the read position information used for threshold switching is not only determined from the passbook travel distance from the reference position.
It is also possible to store it as the previous or current printed line in the transaction data file of the center corresponding to the account in the passbook, and when reading the printed line, read it from the transaction data file and have it sent from the center. Alternatively, in the case of a passbook with a magnetic stripe, the information may be recorded in the magnetic stripe and obtained by reading it with a magnetic stripe reader.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a bankbook suitable for carrying out the present invention, Fig. 2 is a block diagram showing a schematic configuration of the main parts of an embodiment of the present invention, and Fig. 3 is a printed line and its reading signal in the present invention. FIG. 1...Passbook, 3...Reading sensor, 5...Comparator, 8...Threshold voltage supply circuit, 9...Switching circuit, _VS1 , _VS2 ...Threshold voltage.

Claims (1)

[Claims] 1 In a printed line reading method that reads lines that have already been printed in order to detect the lines that should be printed on a bankbook, etc., the transaction data is printed on the back side using a threshold value to obtain a data signal of the presence or absence of printing from the output signal of the reading sensor. For pages with transaction data printed on the back side, use a higher threshold that can remove the influence of transaction data on the back side; A printed line reading method characterized in that a lower threshold is used for pages on which transaction data is not printed.