JPS594073B2 - Shingi pattern hanbetsu sochi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention detects whether or not a detected pattern object such as a banknote matches ten preset authentic patterns.
Regarding the device for determining the authenticity of the detected pattern, the configuration of the authenticity pattern discriminating device is improved and a relatively small group of detectors is used to detect the detected pattern regardless of the feeding speed of the detected pattern. It was developed for the purpose of accurately determining the authenticity of 15 pattern bodies.

First, an example will be explained based on FIG. 1 of the attached drawings. Pi is a detected pattern body having a pattern such as a 1000 yen bill, and 1 is this 20 pattern body Pi to be detected.
The passage case has an insertion opening 2 into which the detected pattern body Pi is inserted and an outlet 3 through which it is discharged.

Di is a detector group 25 for confirming the insertion of the pattern body Pi to be detected, which is provided near the insertion opening 2 of the passage case 1; A device (not shown) that detects the insertion of the detected pattern body Pi into the insertion port 2 and draws the detected pattern body further into the passage case 1 is activated. 3
0Del and De2 are edge detectors that detect one side and the other side of the pattern body Pi to be detected, which are provided at the center D of the passage case 1;
A signal corresponding to the pattern on the side of i is emitted, and the light source 4, the light receiving elements 35Rel, Re2, or the magnetic detection element detect both sides of the detected pattern body Pi moving in the passage case 1. Figure 2, 3rd
As shown in the figure, an edge detection signal e, which is the sum of both detection signals, is output.

Note that the arrow Ti in FIG. 2 indicates the time point at which detection of the pattern body Pi to be detected begins. Dc is a pattern detector for the detected pattern body Pi provided between the pair of edge detectors Del and De2. The pattern portion of the pattern Pi is detected and a pattern detection signal c corresponding to the pattern is output as shown in FIGS.

Ds is a detector for stopping the pattern object Pi to be detected, which is installed near the discharge port 3 of the passage case 1, and if the stopping detector is also a light source, it is connected to a light receiving element or the like, A corner is detected and a retracting device (not shown) for the detected pattern body is stopped, and the detected pattern body is stopped at a predetermined position.

Dcl and Dc2 are detector groups of the desired pattern of the detected pattern body Pi provided approximately on the center diagonal of the passage case 1;
The pattern detector detects a desired pattern portion of the detected pattern body Pi stopped at a predetermined position in the b1 passage case 1 using a light source, light receiving elements Rcl, Rc2, etc., and outputs a pattern detection signal as shown in FIG. Cl and c2 are output respectively.

Na, light receiving elements Rel, Re2, Rc, Rcl, Rc2
Of course, a color filter may be used depending on the pattern to be detected. DA in FIG. 4 is a differential (comparison) amplifier, which is used for the edge detection signal e.
In addition, the pattern detection signal c is manually inputted to output a pattern detection signal d.

TS is a peak value discriminator installed after the differential amplifier DA, and the peak value discriminator is composed of a pair of comparators CMl, CM2, etc., and inputs a pattern detection signal d to detect the peak value width. If h, the pulse signal D becomes low level, and if it exceeds the peak value width h, the pulse signal P becomes high level (see FIG. 2). CT is a counter provided at the subsequent stage of the vitality value discriminator TS, and this counter inputs the pulse signal P, counts the number of pulses of the pulse signal P, and outputs a count signal α. A dead man,
R is a signal for resetting the counter CT, and this signal is applied at the start, for example, when the detected pattern body Pi is inserted into the passage case 1 and detected by the detector Di. PS is a setter, and the setter outputs a true count signal β based on the true pattern body of the detected pattern body Pi.
It outputs 1≦β2, and the true count signal is output with an upper limit and a lower limit set in advance based on the true pattern. COM is a range comparator connected after the counter CT, and this comparator inputs the count signal α and the true count signal β1≦β2, and when the count signal α is within the range of the true count signal, only,
The genuine signal β1≦α≦β2 is output.

DAl in FIG. 4 is a differential (comparison) amplifier, which manually inputs pattern detection signals Cl and c2 groups and outputs a detection signal d1. TSl is a forward/reverse prime value discriminator provided after the differential amplifier DAl, and the forward/reverse prime value discriminator consists of two pairs of comparators CM3 to CM6, etc.
1 is input, and if the detection signal is within the peak value widths Hl and h2, it becomes a low level, and when it exceeds each, it outputs pulse signals Pl and P2, which become a high level (see FIG. 3). G1
is an OR gate that manually checks and outputs each pulse signal Pl, P2, and G2 is a check signal C from the OR gate.
This is an AND gate that manually inputs h and the genuine signal β1≦α≦β2 and outputs the genuine signal 9. In the present invention as described above, when a detected pattern object Pi such as a 1,000 yen bill is inserted into the insertion opening 2 of the passage case 1, the detected pattern object is detected by the detector Di and the The device further draws the detected pattern body Pi into the passage case 1, and the detectors Del, D
The central pattern part is detected on both sides of the detected pattern body moving by the groups e2 and Dc, and the differential amplifier D
If A, the count signal α, which is the detected pattern based on both sides and the center pattern of the moving detected pattern body Pi, is output by the live value discriminator TS and the counter CT, The range comparator C is determined by the true count signal β1≦β2 based on the true pattern body.
Authenticity is determined through OM, and the detected pattern Pi
is considered to be true, a genuine signal β1≦α≦β2 is output to the AND gate G2.

On the other hand, the detected pattern body Pi, which is drawn into the passage case 1 and moves, is detected by the detector Ds, and is stopped and left at a predetermined position within the passage case 1.

The detected pattern body thus stationary is detected by the detector Dcl,
When detected by the Dc2 group, the differential amplifier DAl immediately detects the upper and lower sides of the detected pattern body Pi, that is, the forward and reverse directions, via the forward/reverse peak value discriminator TS1} and the OR gate G1. When the detection check signal Ch is output and the check signal Ch and the genuine signal β1≦α≦β2 are both input to the AND gate G2, the AND gate determines that the detected pattern body Pi is the same as the genuine pattern body. It will output an authenticity signal 9 which means that .
In this case, the retracting device (not shown) is further operated and the detected pattern body Pi is discharged from the discharge port 3 to the outside of the passage case 1. When either the check signal Ch or the genuine signal β1≦α≦β2, or both signals are not input to the AND gate G2, the genuine signal 9 is not output, and the detected pattern body Pi is determined to be a genuine pattern body. It means that they are not the same, that is, they are fake.

In this case, a device (not shown) that pulls in the detected pattern body Pi for 1N is reset, and the detected pattern body is returned to the original insertion slot 2 and returned. The present invention as described above has detectors Del and D that respectively detect the side and center of the relatively moving detected pattern body Pi.
e2, Dc and an amplifier D that differentially compares the output of the detector.
A, a peak value discriminator TS that discriminates the output of the amplifier at a preset peak value and outputs a pulse, a counter CT that counts the pulse output of the discriminator, and the detected pattern body Pi. True counting signal β corresponding to the true pattern
A setter PS that outputs 1≦β2 compares the true count signal with the count signal α (count signal from the counter) and determines that the count signal α is the true count signal β1≦β.
2, the comparator COM1 outputs the true signal β1≦α and β2, and! The above-mentioned detected pattern body P is stationary.
Detectors Dcl and Dc2 each detect the desired position of i.
, an amplifier DAl that differentially compares the output of the detector, a forward/reverse prime value discriminator TSL that discriminates the output of the amplifier based on two preset prime values and outputs a pulse; It consists of an OR gate G1 which inputs and checks the two pulse outputs of the discriminator and outputs a check signal Ch, and by checking the check signal and the genuine signal β1≦α≦β2, the detected pattern body Pi Since this is a genuine/false pattern device designed to determine the authenticity of
It is possible to reduce the number of particles to a relatively small number, and also to prevent dirt from moving from one side to the other regardless of the retraction speed, that is, the moving speed, of the detected pattern body Pi, and regardless of whether the detected pattern body is up or down, that is, in the forward or reverse direction. This device is capable of accurately determining the authenticity of the detected pattern body, regardless of the degree of dirt and the like.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a part of an embodiment of the present invention;
FIG. 4 is a wiring diagram of the same embodiment, and FIGS. 2 and 3 are waveform diagrams explaining FIG. 4. Pi...Detected pattern body, Del, De2,
Dc, Dcl, Dc2, Di, Ds...Detector, DA, DAl...Differential (comparison) amplifier, TS
・・・・・・Listen value discriminator, TSl・・・Forward/reverse climax value discriminator, CT・・・Counter, PS・・・・・・
...Setting device, COM...Comparator, G1...
・・OR gate, β1≦, θ2・・・・ True counting signal, α・・・・Counting signal, β1≦α≦β2・・・・
...Genuine signal, Ch...Check signal.

Claims (1)

[Claims] 1 A pair of edge detectors that detect one side and the other side of a moving pattern body to be detected and output detection signals corresponding to the patterns on each side, and a pair of edge detectors that detect the center of the pattern body to be detected and detect the center pattern. A pattern detector that outputs a pattern detection signal corresponding to A differential amplifier that outputs, a peak value discriminator that discriminates the pattern detection signal from the amplifier according to a preset peak value and outputs a pulse signal, and a counter that counts the pulse signal from the peak value discriminator. , a range comparator that emits a true signal only when the count signal from the counter is within the true count signal range, and a stop that detects the drawn-in target pattern body and issues a pull-in stop signal to stop the detected pattern body. a detector, a pair of stationary stationary detectors for detecting a desired diagonal position of the stationary pattern body to be detected; an amplifier for differentially comparing outputs from these detectors; It is composed of a forward/reverse peak value discriminator that discriminates based on two peak values and issues a check signal if it is at either peak value, and by checking the check signal and the above-mentioned genuine signal, it is possible to detect the detected pattern object. Authenticity pattern discrimination device that distinguishes between authenticity and falsity.