JPH1196315A - Device and method for processing magnetic ticket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To read magnetism even in the instable state of conveyance by performing amplification control while calculating an amplification factor to amplify magnetic information based on detected conveying speed. SOLUTION: An output from a speed sensor 3 is inputted to an A/D converter 4, and that A/D converter 4 converts an analog signal from the speed sensor 3 into a digital signal and outputs it toward a following sub CPU 7 for magnetic processing. The sub CPU 7 detects the conveying speed based on this signal and calculates the amplification factor to the output of a magnetic reading head 2 based on that detected conveying speed. The signal related to this amplification factor is converted into an analog value by a D/A converter 10 and outputted later to a variable amplifier 12. Thus, the variable amplifier 12 performs amplification based on the amplification factor, outputs the result to a signal demodulating part 13 and controls the amplification.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic ticket processing apparatus capable of reading magnetic information even when the transport of a magnetic recording medium is unstable, thereby shortening the processing time and miniaturizing the apparatus. And a magnetic ticket processing method.

[0002]

2. Description of the Related Art Conventionally, for example, a prepaid card, a toll ticket and the like have a magnetic recording portion provided on a medium, and processing such as data reading is performed by a corresponding processing device. Hereinafter, these processing devices are referred to as “magnetic ticket processing devices”.

In such a magnetic ticket processing apparatus, a magnetic recording medium is conveyed by a roller, a belt, or the like, and the recorded information is read by a magnetic reading head arranged in a magnetic reading section. This magnetic read head is arranged so that the magnetic gap is substantially perpendicular to the medium transport direction, converts the change in magnetic flux recorded on the magnetic recording medium into a voltage, and outputs the voltage to the magnetic read circuit. Is what you do. Further, the magnetic read head has a function of converting a change in magnetic flux into a voltage. The change in magnetic flux here is the time derivative of the magnetic flux from the magnetic medium. Therefore, the output signal output on the magnetic read head depends on the speed at which the medium is transported. The magnetic ticket processing apparatus recognizes, with a certain threshold value, a state where there is an input from the magnetic reading head and a state where there is no input.

[0004]

However, as described above, in the conventional magnetic ticket processing apparatus, the output signal from the magnetic head is compared with a predetermined threshold value as it is. The output of the magnetic read head is input to the magnetic read circuit via an amplifier having a fixed magnification. Therefore, the magnitude of the magnetic signal read from the magnetic read head (the output from the magnetic read head when the magnetization direction changes) needs to be substantially constant. For this purpose, it is necessary that the medium transport speed is stable in a substantially constant state before the magnetic reading process.

[0005] Therefore, in such prior art,
In the magnetic ticket processing apparatus, the data reading operation is performed at the time when the medium with an unstable medium conveyance speed is not completely inserted into the apparatus, when the conveyance motor starts moving, immediately after the return in the case of the linear conveyance system, and the like. Had to be controlled so as not to.

As a result, the conventional system requires a transport size that is sufficient to stabilize the transport and that can be processed in a state in which all the media are taken into the apparatus. Also,
As described above, there have also been problems such as an increase in the size of the medium transport and an increase in the processing time due to the necessity of a setup time until the start of the processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to enable magnetic reading even in a state in which conveyance is unstable, and to provide a processing time for reading magnetically recorded information on a magnetic recording medium. It is to realize shortening and miniaturization.

[0008]

In order to achieve the above object, a first aspect of the present invention is a magnetic ticket processing apparatus provided with magnetic reading means for reading magnetic information of a magnetic recording medium in a process of transporting the medium. And, speed detection means for detecting the transport speed, based on the transport speed detected by the speed detection means, to calculate an amplification factor for amplifying the magnetic information obtained by the magnetic reading means, Control means for performing amplification control based on the amplification factor.

The second mode further comprises a storage means for storing in advance a transport speed V0 in a normal state and an amplification factor A0 at the transport speed V0, and the control means detects the transport speed V0 in the normal state. Based on the transport speed u, A
= A0 × u / V0 to calculate the amplification factor A, and perform amplification control based on the amplification factor A.

According to a third aspect, a conveying means for conveying a magnetic recording medium in a predetermined direction, a magnetic reading means for reading magnetic information of the magnetic recording medium in a conveying process by the conveying means, Speed detecting means for detecting the conveying speed u, and a conveying speed V0 in a normal state
Storage means for previously storing the amplification factor A0 at the transport speed V0, the transport speed V0 in the normal state stored in the storage device and the amplification factor A0 at the transport speed V0, and the speed detection unit detects the amplification factor A0. Gain calculating means for calculating the gain A by calculating A = A0.times.u / V0 based on the transport speed u, and reading by the magnetic reading means with the gain A obtained by the gain calculating means. Amplifying means for amplifying a signal related to the magnetic information.

A fourth aspect is a magnetic ticket processing method for reading magnetic information of a magnetic recording medium in the course of transporting the medium and extracting the magnetic information, wherein the transport speed is detected and based on the transport speed. The amplification factor for amplifying the magnetic information is calculated, and amplification control is performed based on the amplification factor.

In a fifth aspect, a first step of transporting the magnetic recording medium in a predetermined direction, a second step of reading magnetic information of the magnetic recording medium in the transporting process, and detecting the transport speed u A third step, based on the transport speed V0 in the normal state stored in advance, the amplification factor A0 at the transport speed V0, and the detected transport speed u, and amplifies by A = A0 × u / V0. The method includes a fourth step of calculating the rate A and a fifth step of amplifying the signal related to the magnetic information with the amplification rate A.

A sixth aspect is a magnetic ticket processing apparatus provided with magnetic reading means for reading magnetic information of a magnetic recording medium in a process of transporting the medium, wherein the speed detecting means detects the transport speed; Control means for calculating a threshold value for extracting magnetic information obtained by the magnetic reading means based on the transport speed detected by the speed detecting means, and performing threshold control based on the threshold value; Having.

The seventh aspect further comprises a storage means for preliminarily storing a transport speed V0 in the normal state and a threshold value T0 at the transport speed V0, wherein the control means is detected by the speed detection means. Based on the transport speed u
The threshold value T is calculated by the calculation of T = T0 × u / V0,
Threshold control is performed based on the threshold T.

According to an eighth aspect, a conveying means for conveying a magnetic recording medium in a predetermined direction, a magnetic reading means for reading magnetic information of the magnetic recording medium in a conveying process by the conveying means, Speed detecting means for detecting the conveying speed u, and a conveying speed V0 in a normal state
A threshold value A0 at the transport speed V0, a transport speed V0 in the normal state, a threshold value A0 at the transport speed V0, and a threshold value A0 at the transport speed V0. A threshold value calculating means for calculating a threshold value T by calculating T = T0 × u / V0 based on the detected transport speed u; and a threshold value T obtained by the threshold value calculating means. Threshold value control means for controlling a signal related to magnetic information read by the magnetic reading means.

According to a ninth aspect, there is provided a magnetic ticket processing method for reading magnetic information of a magnetic recording medium in the course of transporting the medium and extracting the magnetic upper cloth. Then, a threshold value for extracting the magnetic information is calculated, and the threshold value is controlled based on the calculated threshold value.

In a tenth aspect, a first step for transporting the magnetic recording medium in a predetermined direction, a second step of reading magnetic information of the magnetic recording medium in the transporting process, and a transport speed u And a third step of detecting T, T = T0 × u / V0, based on the transport speed V0 in the normal state stored in advance, the threshold value A0 at the transport speed V0, and the transport speed u. The method includes a fourth step of calculating a threshold value T and a fifth step of controlling a signal relating to the magnetic information by the threshold value T.

That is, according to the first to tenth aspects of the present invention, the amplification factor or the threshold value is varied based on the transport speed, so that the influence of the transport speed is avoided, and the magnetic information can be obtained with high stability. Is obtained.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of the magnetic ticket processing apparatus according to the first embodiment and will be described. The magnetic ticket processing apparatus according to the first embodiment is characterized in that the gain of the output value of the magnetic read head is varied. Hereinafter, this will be described in detail.

As shown in FIG. 1, a transport motor 1 for supplying a driving force for transporting a magnetic recording medium and a magnetic read head 2 for reading information recorded on the magnetic recording medium are arranged at predetermined positions of the apparatus. Has been established. The output of the magnetic read head 2 is connected to a peak detector 6 and a variable amplifier 12 via a magnetic amplifier 5, and the output of the peak detector 6 is connected to an input terminal START of the A / D converter 4.
It is connected to the. Further, a speed sensor 3 for detecting the transport speed of the magnetic recording medium is provided at a predetermined position of the apparatus, and an output of the speed sensor 3 is connected to an input terminal AIN of the A / D converter 4.

Further, an output of the A / D converter 4 is connected to an input of a sub CPU 7 for magnetic processing, and an output of the sub CPU 7 is connected to an input of a signal demodulation unit 13 via a CTC 11. The RAM 8 for temporarily storing information is connected to the A / D converter 4,
A ROM 9 in which various information is stored in advance is connected to an input of a variable amplifier 12 via a D / A converter 10.
The output of the signal demodulation unit 13 is a ROM 14, a RAM
15, connected to the input of the main CPU16.

In such a configuration, while the magnetic recording medium is conveyed by the driving force of the conveying motor 1, the magnetic information recorded on the magnetic recording section is read by the magnetic read head 2. Then, the signal from the magnetic read head 2 is amplified by the magnetic amplifier 5 at a predetermined amplification rate, and then output to the peak detector 6 and the variable amplifier 12. The peak detector 6 detects the peak of the signal, and outputs the result to the A / D converter 4.

On the other hand, the output from the speed sensor 3 is A / D
Input to converter 4. The A / D converter 4 converts the analog signal from the speed sensor 3 into a digital signal, and outputs the digital signal to the sub CPU 7 for the subsequent magnetic processing. The sub CPU 7 detects the transport speed based on the signal, and calculates the amplification factor of the output of the magnetic read head 2 based on the transport speed. The signal related to the amplification factor is converted to an analog value by the D / A converter 10 and then output to the variable amplifier 12.

Here, the sub CPU 7 for magnetic processing is provided with D /
The amplification factor output via the A-converter 10 is obtained by the following equation. A = A0 × u / V0 (1) In this equation (1), A0 is an amplification factor at a normal transport speed, V0 is a normal transport speed, and u is a CPU for magnetic processing.
Is the transport speed obtained from the sensor. The amplification factor A0
And the value of the transport speed V0 are stored in the ROM 9 in advance.

In this way, the variable amplifier 12 performs amplification based on the amplification factor, and outputs the amplified signal to the signal demodulation unit 13. Thus, the main CPU 1 that controls the entire system
No. 6 obtains the information recorded on the magnetic recording medium with high accuracy. Note that the CTC 11 uses a pulse related to magnetic information as follows:
This is to set a time width that is used as a reference when determining 0 or 1.

FIG. 2 shows the relationship between the time change, the transport speed (relative value), and the correction value. As shown in the figure, while the speed increases with time, and then becomes substantially equilibrium (indicated by a thin line in FIG. 2), the correction value is inversely proportional to the characteristic related to the transport speed. (Shown by a thick line in FIG. 2). By making the two have such a relationship, the variation in the output of the magnetic read head 2 with time varies without correction (FIG. 3).
(See FIG. 3A), with the correction, there is no variation in the temporal change of the output of the magnetic read head 2 (see FIG. 3B).

The configuration and operation of the magnetic ticket processing apparatus according to the first embodiment have been described above. The outline of the magnetic ticket processing method realized by the apparatus is as shown in the flowchart of FIG. That is, according to the present method, the magnetic information is read by the magnetic read head 2 (step S1), the transport speed is detected by the speed sensor 3 (step S2), and the amplification factor A is calculated by the above equation (1) ( In step S3, the magnetic signal is amplified by the variable amplifier 12 at the amplification factor A, and magnetic information is obtained stably (step S4).

As described above, according to the first embodiment, the magnetic output is substantially stable even when the transport speed fluctuates, so that the threshold value for discriminating the magnetic signal is set at the normal transport speed. The magnetic reading process can be performed in a state where the value is fixed to the value.

Next, a magnetic ticket processing apparatus and a magnetic ticket processing method according to a second embodiment of the present invention will be described in detail. FIG. 5 is a diagram showing a configuration of a magnetic ticket processing apparatus according to the second embodiment of the present invention. The magnetic ticket processing apparatus according to the second embodiment is characterized in that a threshold value for determining a magnetic reversal unit is varied.

As shown in FIG. 1, a transport motor 1 for supplying a driving force for transporting a magnetic recording medium and a magnetic read head 2 for reading information recorded on the magnetic recording medium are arranged at predetermined positions of the apparatus. Has been established. The output of the magnetic read head 2 is connected to a peak detector 6 and a signal demodulator 13 via a magnetic amplifier 5, and the output of the peak detector 6 is connected to an input terminal START of the A / D converter 4.
It is connected to the. Further, a speed sensor 3 for detecting the transport speed of the magnetic recording medium is provided at a predetermined position of the apparatus, and an output of the speed sensor 3 is connected to an input terminal AIN of the A / D converter 4.

Further, an output of the A / D converter 4 is connected to an input of a sub CPU 7 for magnetic processing, and an output of the sub CPU 7 is connected to an input of a signal demodulation unit 13 via a CTC 11. The RAM 8 for temporarily storing information is connected to the A / D converter 4,
The ROM 9 in which predetermined information is stored in advance is connected to a connection end between the sub CPU 7 and the CTC 11. The output of the signal demodulation unit 13 is a ROM 14, a RAM 15, a main C
It is connected to the input of PU16.

In such a configuration, the magnetic recording medium is read by the magnetic read head 2 in the process of being driven by the driving force of the transport motor 1 in the magnetic recording section. Then, the signal from the magnetic read head 2 is amplified by the magnetic amplifier 5 and then
The signal is output to the peak detector 6 and the signal demodulator 13.
On the other hand, the output from the speed sensor 3 is output from the A / D converter 4
Is input to The A / D converter 4 converts the analog signal from the speed sensor 3 into a digital signal, and outputs the digital signal to the sub CPU 7 for the subsequent magnetic processing.

In the sub CPU 7, a threshold value for discriminating the magnetic signal is calculated based on the digital signal related to the transport speed, and the threshold value is output to the signal demodulation unit 13 via the CTC 11. Is done. In addition, CTC11
Is to set a pulse width serving as a reference when determining 0 or 1 in a pulse relating to magnetic information.

The threshold value (T) is expressed by the following equation. T = T0 × u / V0 (2) In this equation (2), T0 is a threshold value at a normal transfer speed, V0 is a normal transfer speed, and u is a transfer speed obtained from a magnetic processing CPU. . This threshold T0
And the transport speed V0 are stored in the ROM 9 in advance. Thus, in the signal demodulation unit 13, the output of the magnetic amplifier 5 is controlled based on the threshold. Main CPU 16
Can obtain magnetic information in this manner.

FIG. 6 shows the relationship between the time change, the transport speed (relative value), and the threshold. As shown in the figure, the characteristic of the time change of the speed (indicated by the thin line in FIG. 6) and the characteristic of the time change of the threshold value (indicated by the thick line in FIG. 6) have a proportional relationship in slope. ing. By making the two have such a proportional relationship, as shown in FIG. 7, even if there is a variation in the temporal change of the output of the magnetic read head 2, it is possible to eliminate the influence of the variation by the threshold value control. it can.

The configuration and operation of the magnetic ticket processing apparatus according to the second embodiment have been described above. The outline of the magnetic ticket processing method realized by the apparatus is as shown in the flowchart of FIG. That is, according to this method,
The magnetic information is read by the magnetic read head 2 (step S11), the transport speed is detected by the speed sensor 3 (step S12), and the threshold value T is calculated by the above equation (2).
Is calculated (step S13), and the signal demodulation unit 13 is controlled by the D / A converter 10 controlled by the sub CPU 7.
Is output, and magnetic information is obtained stably (step S4).

As described above, according to the second embodiment, the ratio of the threshold value to the magnetic output becomes substantially constant, and the amplification factor of the output value of the magnetic read head is set to the value at the normal speed. As a result, a magnetic reading process can be performed.

As described above in detail, according to the present invention, it is possible to perform the magnetic reading process even when the medium transport speed is not stable (there is a speed fluctuation). This allows the magnetic ticket processing apparatus to perform processing even when the medium with an unstable medium conveyance speed has not been fully inserted into the apparatus, when the conveyance motor starts moving, or immediately after the return in the case of the linear conveyance system. Become. As a result, as compared with the related art, the processing time can be reduced by reducing the setup time in the processing, and the apparatus can be downsized by shortening the transport distance.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and it is needless to say that various improvements and modifications can be made without departing from the gist of the present invention. For example, in the first and second embodiments, the mode in which the amplification factor and the threshold value are changed according to the transport speed has been described, but it is a matter of course that both can be used in combination.

[0040]

According to the present invention, there is provided a magnetic ticket processing apparatus which enables magnetic reading even in a state in which conveyance is unstable, and realizes a shortening and miniaturization of processing time for reading magnetic recording information of a magnetic recording medium. An object of the present invention is to provide a magnetic ticket processing method.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a magnetic ticket processing device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a time change and a transport speed (relative value) / correction value.

3A is a diagram illustrating a relationship between a time change and a magnetic read head output, and FIG. 3B is a diagram illustrating a relationship between a time change and a magnetic read head output with correction.

FIG. 4 is a flowchart according to a magnetic ticket processing method according to the first embodiment;

FIG. 5 is a block diagram illustrating a configuration of a magnetic ticket processing device according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a relationship between a time change and a transport speed (relative value) / threshold value.

FIG. 7 is a diagram illustrating a relationship between a time change and a magnetic read head output.

FIG. 8 is a flowchart according to a magnetic ticket processing method according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying motor 2 Magnetic reading head 3 Speed sensor 4 A / D converter 5 Magnetic amplifier 6 Peak detection part 7 Sub CPU 8 RAM 9 ROM 10 D / A converter 11 CTC 12 Variable amplifier 13 Signal demodulation part 14 ROM 15 RAM 16 Main CPU

Claims (10)

[Claims] 1. A magnetic ticket processing device comprising: magnetic reading means for reading magnetic information of a magnetic recording medium in a process of transporting the medium, wherein the speed detecting means detects the transport speed; Control means for calculating an amplification factor for amplifying the magnetic information obtained by the magnetic reading means on the basis of the transport speed detected by the control means, and performing amplification control based on the amplification factor. Processing equipment. 2. The apparatus according to claim 1, further comprising storage means for previously storing a transport speed V0 in a normal state and an amplification factor A0 at said transport speed V0, wherein said control means stores the transport speed u detected by said speed detection means. 2. The magnetic ticket processing apparatus according to claim 1, wherein the amplification factor A is calculated by an operation of A = A0.times.u / V0, and the amplification control is performed based on the amplification factor A. 3. A transport unit for transporting a magnetic recording medium in a predetermined direction, a magnetic reading unit for reading magnetic information of the magnetic recording medium during a transport process by the transport unit, and a transport speed u by the transport unit. Speed detecting means for detecting, a conveying speed V0 in the normal state, a storage means for previously storing the amplification rate A0 at the conveying speed V0, and a conveying speed V in the normal state stored in the storage means
0, an amplification factor A0 at the transport speed V0, and a transport speed u detected by the speed detection device, and an amplification factor calculation device for calculating an amplification factor A by calculating A = A0 × u / V0; A magnetic ticket processing device, comprising: amplification means for amplifying a signal relating to magnetic information read by the magnetic reading means with the amplification factor A obtained by the amplification factor calculation means. 4. A magnetic ticket processing method for reading magnetic information of a magnetic recording medium during a transport process of the medium and extracting the magnetic information, wherein the transport speed is detected and the magnetic information is detected based on the transport speed. A magnetic ticket processing method comprising: calculating an amplification factor for amplifying a signal; and performing amplification control based on the amplification factor. 5. A first method for conveying a magnetic recording medium in a predetermined direction.
A second step of reading the magnetic information of the magnetic recording medium in the transporting process; a third step of detecting the transporting speed u; a transporting speed V0 in a normal state stored in advance and the transporting A fourth step of calculating an amplification factor A by an operation of A = A0 × u / V0 based on the amplification factor A0 at the speed V0 and the detected transport speed u; And a fifth step of amplifying such a signal. 6. A magnetic ticket processing device provided with magnetic reading means for reading magnetic information of a magnetic recording medium in a process of transporting the medium, wherein the speed detecting means detects the transport speed, and the speed detecting means. Control means for calculating a threshold value for extracting the magnetic information obtained by the magnetic reading means based on the transport speed detected by the control means, and performing threshold control based on the threshold value. A magnetic ticket processing device characterized by the above-mentioned. 7. A storage unit for storing in advance a transport speed V0 in a normal state and a threshold value T0 of the transport speed V0, wherein the control unit controls the transport speed u detected by the speed detection unit. 7. The magnetic ticket processing according to claim 6, wherein a threshold value T is calculated by calculating T = T0 × u / V0 based on the threshold value, and threshold value control is performed based on the threshold value T. apparatus. 8. A transport unit for transporting a magnetic recording medium in a predetermined direction, a magnetic reading unit for reading magnetic information of the magnetic recording medium during a transport process by the transport unit, and a transport speed u by the transport unit. Speed detecting means for detecting, a conveying speed V0 in the normal state, and a storage means for previously storing a threshold value A0 at the conveying speed V0, and a conveying speed V in the normal state stored in the storing means.
A threshold value calculating means for calculating a threshold value T by calculating T = T0 × u / V0 based on the threshold value A0 at the transport speed V0 and the transport speed u detected by the speed detecting means. And a threshold control means for controlling a signal relating to magnetic information read by the magnetic reading means based on the threshold value T obtained by the threshold calculating means. Processing equipment. 9. A magnetic ticket processing method for reading magnetic information of a magnetic recording medium in a process of transporting the medium and extracting the magnetic upper cloth, the method comprising detecting the transport speed, and detecting the magnetic information based on the transport speed. A magnetic ticket processing method comprising: calculating a threshold value for extracting information; and performing threshold value control using the calculated threshold value. 10. A first step of transporting a magnetic recording medium in a predetermined direction, a second step of reading magnetic information of the magnetic recording medium in the transporting step, and a step of detecting the transport speed u. Step 3, the transport speed V0 in the normal state stored in advance, the threshold value A0 at the transport speed V0, and the transport speed u
A fourth step of calculating a threshold value T by an operation of T = T0 × u / V0 based on the following equation; and a fifth step of controlling a signal related to the magnetic information by the threshold value T. A magnetic ticket processing method.