JPH0935112A - Coin reader and coin pattern reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately decide the denomination of a coin by adjusting the detecting condition of a post stage based upon a coin detection signal detected on the prestage at the time of deciding the denomination of a coin. SOLUTION: In a coin reader 11 for reading out the denomination data of a coin and judging its denomination, a material detecting sensor 13 arranged on the prestage of a coin carrier 12 is constituted of arranging a pair of coils for detecting a metal on both the sides of the carrier 12 and allowed to electromagnetically detect the material of a coin C carried and passed between the opposite parts of the coils. A pattern reading and detecting sensor 14 arranged on a post stage position where the material reading of the prestage completely ends irradiates the one side of the coin C with light from a pattern detecting LED array 14a through a light collimating 'Selfock' lens 14b and a CCD image sensor 14d detects the reflected light from the one face through an image forming 'Selfock' lens 14c to read out a pattern formed on the surface of the coin. A CPU decides the material of the coin C from data detected by the sensor 13, reads out a corresponding optimum pattern reading condition from a ROM and sets up the read condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coin reading device internally configured in various automatic transaction machines for handling coins, and more particularly to a coin reading device having a high discrimination performance for discriminating the type of coin with high accuracy. And a coin pattern reader.

[0002]

2. Description of the Related Art Generally, a coin reading device of this type is shown in FIG.
As shown in FIG. 9, a coin conveying path 1 for conveying coins 195 in a horizontal direction by combining conveying members such as conveying belts 191 and 192, conveying rollers 193, touch rollers 194.
96, and various sensors such as a coin reading detection sensor 197, a material detection sensor 198, and a thickness detection sensor 199 are arranged along the coin transport path 196, and the denomination of the coin 195 introduced therein is determined. It is carried out.

In this case, the coin reading detection sensor 197 is
The coin surface is irradiated with the irradiation light of the pattern detection LED 197a, and the reflected light of the uneven pattern is applied to the CCD image sensor 19.
7b is detected and the surface pattern of the coin is read. Also,
When the diameter detection LED 197c is provided side by side, the irradiation light emitted by the diameter detection LED 197c is also used in the CCD.
197b is read and detected to find the diameter of the coin. At this time, the CCD image sensor 197b is obliquely illuminated so as to obtain a high-contrast image, and the specularly reflected light is received.

However, when the detection conditions are constant, since the specular reflectance differs depending on the material of the coin, the light receiving level differs greatly depending on the denomination, and an image can be captured under the optimum conditions for all denominations. There wasn't.

For example, as shown in FIG. 20, when the light amount on the light projecting side and the amplification factor on the light receiving side are constant, the output waveform of the CCD image sensor is a CCD image sensor due to the difference in reflectance between bronze, white bronze and aluminum. When the detection data is binarized and the denomination is judged by setting the threshold value (thresholder level) V0 to white copper, the aluminum pattern signal is totally under the same detection condition. Then, the bronze pattern signal becomes a black level as a whole, the pattern information is almost lost, and the pattern cannot be identified.

Further, when the denomination is determined by performing multi-valued image processing by A / D (analog / digital) conversion, if the threshold level is set according to the denomination material (aluminum) having the highest reflectance, this It is necessary to change the amount of light and the amplification factor so that the aluminum signal waveform does not become saturated. In this case, the denomination material with low reflectance (bronze) is used.
The signal waveform of becomes very small, and the pattern information after A / D conversion becomes insufficient, making it impossible to identify. Therefore, it is conceivable that a high-resolution A / D converter is required to secure sufficient identification accuracy, but in this case, there is a problem of high cost.

[0007]

Therefore, according to the present invention, when determining the denomination of coins, the denomination can be accurately determined in the latter stage by adjusting the detection condition in the latter stage based on the coin detection signal detected in the first stage. It is intended to provide a coin reading device and a coin pattern reading device.

[0008]

According to the first aspect of the present invention,
A coin reading device for reading coin type data to determine a denomination, comprising: first coin reading means for reading the coin type data, and coin reading corresponding to the type data read by the first coin reading means. It is characterized in that it is provided with a reading condition setting changing means for changing the setting to the condition and a second coin reading means for reading the coin type data under the coin reading condition changed by the reading condition setting changing means.

The invention according to claim 2 is characterized in that the reading condition setting changing means changes the setting to a coin reading reflection condition suitable for the type data read by the first coin reading means.

According to a third aspect of the present invention, there is provided a coin reading device for determining the denomination by reading the coin type data, wherein a plurality of types of reading means having different coin reading standards and a plurality of types of reading means are used. Parallel reading means for reading the pattern data in parallel.

The invention according to claim 4 is characterized by comprising a selecting means for selecting read data corresponding to the type of coins read by the parallel reading means.

[0012]

According to the present invention, when discriminating the denomination of coins,
First, read the coin type data with the first coin reading means,
The reading condition setting changing means changes the setting to the coin reading condition corresponding to the read type data, and the second coin reading means reads the coin type data under the changed coin reading condition to determine the denomination.

Similarly, when discriminating the denomination of coins, the first coin reading means reads the coin type data, and the reading condition setting changing means changes the setting to the coin reading reflection condition suitable for the read type data, The second coin reading means reads the coin type data and determines the denomination by the coin reading condition with the setting changed.

When reading the surface pattern of a coin, the parallel reading means reads the pattern data of the coin in parallel by using a plurality of types of reading means having different reading standards for the coin.

Further, when the parallel reading means reads the coin pattern data in parallel by using the reading means of a plurality of types, the selecting means selects the read data corresponding to the type of the read coins.

[0016]

As a result, when determining the denomination of coins,
Since the first coin reading means extracts the coin reading conditions necessary for the denomination determination in advance, the extracted optimal coin reading conditions are switched to and the second coin reading means reads the coin type data, the second coin reading means is used. The coin reading means can accurately determine the denomination under the optimum reading conditions. For example, when the material or outer diameter is detected first, the coin is read and processed after switching to the reading / reflecting condition of the reflectance of the denomination according to the material or outer diameter. As described above, the two-stage reading configuration in which the reading is started after adjusting to the optimum detection condition and narrowing down, the identification accuracy is accurately improved, and unnecessary reading is eliminated.

Further, if a plurality of types of reading means having different coin reading standards are used, the optimum denomination corresponding to the matching is selected from the parallel detection data for specifying the pattern, material, outer diameter, thickness, etc. for each denomination. You can easily specify the denomination by selecting. Further, in this case, there is no restriction on the arrangement order or arrangement interval of various reading means, so that the reading arrangement structure can be downsized, and the reading time can be efficiently read to shorten the detection time.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a coin reading device 11 according to the first embodiment. The coin reading device 11 includes a material detection sensor 13 arranged in a front stage of a coin transport path 12 and a pattern reading detection sensor 14 arranged in a rear stage. Consists of

The material detection sensor 13 has a pair of coils for metal detection disposed on both sides of the coin transport path 12, and when the coin C is transported and passed between the pair of coil facing portions, the material is electromagnetically detected. To detect. The pattern reading detection sensor 14 is arranged at the position of the latter stage where the reading of the material of the former stage is completely completed, and the reading of the surface pattern is started to be detected in the latter stage.

The pattern reading detection sensor 14 irradiates one side of the coin C from the pattern detection LED array 14a through the collimating selfoc lens 14b, and the reflected light from the coin C is formed into an image forming selfoc. The CCD image sensor 14d detects the surface pattern of the coin through the lens 14c.

FIG. 2 shows a block diagram of the control circuit of the coin reading device 11, in which the CPU 21 controls each circuit device according to a program stored in the ROM 22, and the control data is stored in the RAM 23 so as to be readable.

The CPU 21 takes in the material detection data detected by the material detection sensor 13 via the interface 24, judges the material from the taken material detection data, and sets the optimum pattern reading condition corresponding to the judged material in the ROM 22.
The pattern reading condition is set by reading the pattern reading condition, and the set pattern reading condition is output to the pattern reading detection sensor 14 to read the surface pattern of the coin.

At the time of changing the setting, 1. The pattern reading control circuit 25 outputs the light quantity to the pattern detecting LED array 14a through the driving circuit 26 to change the setting. 2. Output from the pattern reading control circuit 25 to the CCD image sensor 14d to change the data amplification factor. 3. Binarization processing circuit 28 for the data amplified by amplifier 27
Change the setting of the threshold level when processing with.

At least one of these pattern reading conditions is allowed to be changed, and set values for various materials are stored in the ROM 22 in advance so that the optimum setting conditions can be changed according to the material when reading the pattern. And read the pattern. When the pattern is read, the denomination is narrowed down from the material data detected by the data processing circuit 29, and then the denomination is determined by collating the acquired image data with the reference data for collation.

As described above, when determining the denomination, the identification accuracy is surely improved due to the two-stage reading configuration in which the reading is started after the setting is changed to the optimum detection condition and narrowed down.

FIG. 3 shows a case where the light amount on the light-projecting side of the pattern detection LED array 14a is changed. Even if the materials are different, such as a bronze coin, a white copper coin, and an aluminum coin, the reflectance suitable for each material. By changing the setting so that the amount of light can be obtained, sufficient image data can be obtained during pattern reading.

FIG. 4 shows a coin reading device 41 of the second embodiment, which comprises a material detecting sensor 42 and a pattern reading detecting sensor 4.
In addition to 3, the thickness detection sensor 44 and the outer diameter detection LED array 45, which also serves as a CCD image sensor, can be incorporated to obtain a plurality of coin detection information, and the denomination determination can be made from this detection information. Can be further narrowed down to further improve the identification accuracy of denomination determination.

FIG. 5 shows a coin reading device 51 of the third embodiment, which comprises a material detecting sensor 52 and a pattern reading detecting sensor 5.
3 as well as the thickness detection sensor 54 and LE for pattern detection
CCD image sensor 55 for outer diameter detection which is also used for D array
Can be incorporated and arranged. In this case, a plurality of coin detection information can be obtained in the same manner, and the denomination determination can be further narrowed down from this detection information to improve the identification accuracy of the denomination determination.

FIG. 6 shows a coin reading device 61 of the fourth embodiment, which comprises a material detection sensor 62 and a pattern reading detection sensor 6.
In addition to 3, the thickness detection sensor 64 and the independent outer diameter detection sensor 65 can be incorporated and arranged, and in this case also, a plurality of coin detection information can be obtained and gold can be obtained from this detection information. By further narrowing down the type determination, the identification accuracy of the type determination can be improved.

FIG. 7 is a coin reading device 4 of the second to fourth embodiments.
The control circuit block diagram corresponding to 1, 51, 61 is shown,
The CPU 71 controls each circuit device according to the program stored in the ROM 72, and stores the control data in the RAM 73 so that the control data can be read.

The CPU 71 includes material detection sensors 42, 52,
The material detection data detected by 62 is taken in through the interface 74, and when the thickness detection sensors 44, 54, 64 are provided, the thickness detection data detected by this thickness detection sensor is taken in through the interface 75. Put in. The material is determined from the captured detection data, the optimum pattern reading condition corresponding to the determined material is read from the ROM 72 to set the pattern reading condition, and the set pattern reading condition is set to the pattern reading detection sensors 43, 53, Output to 63 and read the surface pattern of the coin.

When changing the setting, the case of changing the setting of the amplification factor will be described. The CPU 71 causes the CCD image sensor 7 on the light receiving side via the pattern reading control circuit 76.
The unevenness pattern of the coin is read by selecting one of the first to third amplifiers 78 to 80 that obtains the optimum amplification factor of the detection data detected in step 7 according to the material. Further, at the time of reading the pattern, the data processing circuit 83 narrows down the denomination through the input signal switching circuit 81, the A / D circuit, or the binarization processing circuit 82, and subsequently, the acquired image data and the reference for comparison. The denomination is judged by collating with the data.

FIG. 8 shows the threshold level V1 on the light receiving side.
.About.V3 and amplification factors A1 to A3 are changed. For example, in the case of binarization, the threshold level V1 of a bronze coin and the threshold level V2 of a bronze coin are shown.
, The threshold level V3 of aluminum coins, and the threshold level V1 of the image level suitable for each material
Change the setting to ~ V3. As a result, a well-balanced binary image corresponding to each material can be obtained.

When the denomination determination is fixed at the threshold level V3, the amplification factor of the bronze coin is set to A.
1. By changing the amplification factor of white copper coin to A2 and the amplification factor of aluminum coin to A3, each output waveform level can be made constant even if the material is different. As a result,
When reading the pattern on the surface of the coin, it is possible to obtain image data under sufficient reading conditions.

Further, in the case of multi-value processing, if the signal is taken in by using the input range of the A / D conversion as much as possible, a lot of coin pattern information can be obtained accurately.

The processing operation of the coin reading device of the first to fourth embodiments thus constructed will be described with reference to the flowchart of FIG. Now, when determining the denomination of coins, the conveyed coins C are the material detection sensors 13, 42, 52, 62.
When it is guided to the position, the material is detected and judged (steps n1 to n2), if a material other than the applicable coin to be judged is detected, it is judged as a fake coin, and if it is judged as the material of the applied coin, it is a positive coin. Then, the CPU 21, 71 determines the optimum pattern reading condition corresponding to the material from the material detection data in the ROM 22, 72.
Is read from and set (steps n3 to n4).

The set pattern reading conditions are output to the pattern reading detection sensors 14, 43, 53 and 63 to read the surface pattern of the coin (step n5).

At this time, if there is other coin detection information of the thickness detection sensor or outer diameter detection sensor, the detection characteristics are detected to narrow down the denomination determination, and if there is no inconsistent abnormality, it is determined as a true coin. And promote discrimination at the time of denomination determination (step n6).

Estimating the denomination from these acquired information,
If there is an abnormality, it is determined to be a fake coin, and if it is estimated to be a true coin, the estimated data is collated with the reference data to finally determine the denomination (steps n7 to n10).

FIG. 10 is a coin reading device 101 of the fifth embodiment.
This coin reading device 101 is configured to include an outer diameter detection sensor 103 arranged at the front stage of the coin transport path 102 and a pattern reading detection sensor 104 arranged at the rear stage.

In addition to the two sensors 103 and 104, a material detection sensor 105 and a thickness detection sensor 106 may be provided side by side. In this case, a large amount of coin detection information can be obtained and the narrowing down of denomination determination can be promoted. it can.

The outer diameter detecting sensor 103 is an outer diameter detecting LE.
The irradiation light emitted from the D array 103a toward the detection position is detected by the CCD image sensor 103c for outer diameter detection via the imaging SELFOC lens 103b to detect the outer shape and the size of the coin C, and Read the diameter.

Further, the pattern reading detection sensor 104 has the same detection structure as that of the above-mentioned embodiment, and the pattern detection LED array 104a to the collimating SELFOC lens 104b.
One side of the coin C is radiated via the CCD, and the reflected light from the coin C is transmitted to the CCD via the imaging SELFOC lens 104c.
The surface pattern of the coin is read by being detected by the image sensor 104d.

Further, the outer diameter detection sensor 103 is not limited to the photoelectric detection type, and as shown in the sixth embodiment of FIG. 11, a pair of coils 112, 112 is provided at both side positions sandwiching the coin conveying path 111.
It is also possible to use the electromagnetic detection type outer shape detection sensor 113 which is provided and detects the outer diameter of a circular coin that reacts with metal.

FIG. 12 is a coin reading device 101 of the fifth embodiment.
The control circuit block diagram of FIG.
Each circuit device is controlled according to the program stored in the memory 22, and the control data is stored in the RAM 123 so as to be readable.

The CPU 101 determines the outer diameter from the outer diameter detection data detected by the outer diameter detection sensor 103, reads the optimum pattern reading condition corresponding to the determined outer diameter from the ROM 122, and sets the pattern reading condition. The pattern reading conditions are output to the pattern reading detection sensor 104 to read the surface pattern of the coin C.

Further, the CPU 121 has a material detection sensor 1
05, the material detection data detected by the sensor 105 is taken in through the interface 124, and when the thickness detection sensor 106 is provided, the thickness detection data detected by the thickness detection sensor 106 is obtained. The denomination determination is narrowed down from the acquired detection data through the interface 125 to promote the identification accuracy of the denomination determination.

By the way, when changing the pattern reading condition of the coin, the pattern reading control circuit 126, via the drive circuit 127, emits light based on the detection data of the outer diameter detecting sensor 103 arranged in the preceding stage. LED array for pattern detection 1
It is output to 04a and the setting of the light amount is changed. In addition, the CC for pattern reading on the light receiving side from the pattern reading control circuit 126.
When the data amplification rate is output to the D image sensor 104d or the detection data amplified by the amplifier 128 is processed by the A / D or the binarization processing circuit 129, the threshold level is changed. Make the reading clear. The data read under the setting change condition is finally collated with the reference data in the data processing circuit 130 to determine the denomination.

The processing operation of the coin reading device 101 of the fifth embodiment thus constructed will be described with reference to the flowchart of FIG. Now, when determining the denomination of coins, when the conveyed coin C is guided to the position of the outer diameter detection sensor 103, the outer diameter of the coin C is detected and determined (step n11), and the outer diameter other than the applicable coin is determined. If it is detected, it is determined as a false coin, and if it is determined as the outer diameter of the applicable coin, it is determined as a positive coin, and the CPUa 121 assumes the material from the outer diameter detection data and reads the corresponding optimum pattern reading condition from the ROM 122 and sets it. (Steps n12 to n14).

The set pattern reading condition is output to the pattern reading detection sensor 104 to read the surface pattern of the coin (step n15).

At this time, if there is other coin detection information of the material detection sensor 105 and the thickness detection sensor 106, the detection characteristics are detected to narrow down the denomination determination. Judgment is made to facilitate discrimination at the time of denomination judgment (step n16).

Estimating the denomination from these acquired information,
If there is an abnormality, it is determined to be a fake coin, and if it is estimated to be a true coin, the estimated data and the reference data are collated to finally determine the denomination (steps n17 to n20).

As described above, when the pattern reading detection condition of the rear stage is changed based on the outer diameter detection element of the front stage, especially when the material itself cannot be detected by foreign coins or the like, there is almost no difference in the material and the surface is almost the same. It is effective in the case of denominations having greatly different reflectances.

FIG. 14 is a coin reading device 141 of the seventh embodiment.
This shows the pattern reading detection sensor 142, the material detection sensor 143, and the thickness detection sensor 144 if necessary.
And an LED array 145 for detecting the outer diameter, which also serves as a CCD image sensor, of which the pattern reading detection sensor 14 has a plurality of reading references corresponding to the total number of denominations to be judged.
In preparation for No. 2, the read detection data and the denomination standard data preset for each denomination are collated to determine the denomination.

The combination of the respective detection sensors is not limited to this, and as in the eighth embodiment shown in FIG. 15, in addition to the pattern reading detection sensor 151 and the material detection sensor 152, the thickness detection sensor 153, A CCD image sensor 154 for outer diameter detection, which also serves as an LED array for pattern detection, is incorporated and arranged, or in addition to the pattern reading detection sensor 161 and the material detection sensor 162 as in the ninth embodiment shown in FIG. Thus, the outer diameter detection sensor 163 and the thickness detection sensor 164 can be incorporated and arranged, and in this case also, a plurality of coin detection information can be obtained.

FIG. 17 is a control circuit block diagram of the coin reading device corresponding to the seventh to ninth embodiments, in which the CPU 171 controls each circuit device according to the program stored in the ROM 172, and the control data is stored in the RAM 173. It is readable and stored with.

The pattern reading control circuit 174 includes the CPU 17
The pattern reading detection sensor 142 is controlled based on the control signal No. 1, and the CCD image sensor 14 for pattern reading is controlled.
For 2a, the image sensor 142a is configured to distribute and output detection data to determine the denomination.

This is for exclusive use for coins of all denominations for which denominations are to be determined, with different reading standards in which optimum reading processing conditions of amplification factor and threshold level suitable for each denomination material are set. Each amplifier 174 of A / D or 2
A binarization processing circuit 175 ... And a memory 176 ... Are provided, and the CCD image sensor 142 for pattern reading at the time of denomination determination.
The detection data read in a is distributed and output, processed in parallel under each reading processing condition, and stored in the dedicated memory 176 ... Corresponding to the denomination, and the stored data is finally stored in the data processing circuit 177. Check the denomination with the reference data.

At this time, the CPU 171 fetches the material detection data detected by the material detection sensors 143, 152, 162 via the interface 178, and the thickness detection data detected by the thickness detection sensors 144, 153, 164. Is taken in through the interface 179, and the coin data is narrowed down separately from the pattern reading detection sensor 142 at the time of detection to promote the denomination determination.

As described above, since the reading reference is set independently for each denomination, the denomination can be specified for exclusive use, and the matching can be performed from the detection data obtained by the parallel processing. The denomination can be easily specified by selecting the optimal denomination to be used. Further, in this case, since the data in the previous stage is not required, there is no restriction on the arrangement order or arrangement interval of various sensors, so that the detection structure can be downsized, and the coin detection data can be immediately read. The detection time can be shortened.

The processing operation of the coin reading apparatus of the seventh to ninth embodiments constructed as described above will be described with reference to the flowchart of FIG. Now, in the case of determining the denomination of coins, when the conveyed coin C is guided to the position of each detection sensor, the type data of the coin is detected by each sensor 142-145, 151.
˜154, 161-164, of which the pattern reading detection sensors 142, 151, 161 read the surface pattern of the coin, and at the same time, the read data is applied to a plurality of processing systems having different reading standards for each denomination. The data is distributed, output, processed all at once under the dedicated read processing conditions, and stored in the memory 176 ... Corresponding to the denomination (step n21).

At this time, the material detection sensors 143, 1
52, 162 and thickness detection sensors 144, 153, 16
4, other coin detection information of the outer diameter detection sensors 145, 154, 163, etc., detects its detection characteristics and narrows down the denomination determination, and if there is no contradictory abnormality, it is determined as a true coin and the denomination determination is performed. Promote time discrimination (step n22).

As a result, the denomination is estimated from the acquired information, and if there is an abnormality, it is determined to be a fake coin (steps n23 to n2).
4) If it is estimated that the coin is a true coin, the image data is retrieved from the memory 176 corresponding to the denomination captured under the most suitable condition, and the denomination is finally determined by collating with the reference data (steps n25 to n27). .

As described above, when determining the denomination of a coin, the reading condition of the coin necessary for the denomination determination is extracted in advance by the material detection sensor or the outer diameter detection sensor in the preceding stage, and the extracted optimum coin is selected. Since the type reading data of the coin is read by the pattern reading detection sensor in the latter stage after switching to the reading condition, the coin type can be accurately determined by the pattern reading detection sensor in the latter stage under the optimum reading condition. As described above, the two-stage reading configuration in which the reading is started after narrowing down to the optimum pattern reading detection condition, the identification accuracy is accurately improved.

Further, by using a plurality of types of reading determination circuits having different coin reading standards, it is possible to easily specify the denomination by selecting the optimum matching denomination from the parallel detection data to be specified exclusively. You can Further, in this case, since the order of arrangement of various sensors and the arrangement interval are not restricted, the reading arrangement configuration can be downsized, and the reading time can be efficiently read to shorten the detection time.

In the correspondence between the present invention and the configuration of the above-described embodiment, the first coin reading means of the present invention has a material detecting sensor 13, 42, 52, 62 and an outer diameter detecting sensor 103, 113 of the embodiment. Similarly, the coin reading conditions are as follows: the light amount on the light emitting side and the threshold level V1 on the light receiving side.
.About.V3 or amplification factors A1 to A3, the reading condition setting changing means corresponds to the CPU 21, 71, 121, and the second
The coin reading means is a pattern reading detection sensor 14, 43, 5
3, 63, 104, the coin reading reflection condition corresponds to the light amount output on the light projecting side, and the plurality of types of reading means are the detection sensors 142 to 145, 151 to 154, 161 to 16 respectively.
4, the parallel reading means is each circuit system 174 distributed and output from the CCD image sensor 142a for pattern reading.
~ 176, and the selecting means corresponds to the CPU 171, but the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a coin reading device according to a first embodiment of the present invention.

FIG. 2 is a control circuit block diagram of the coin reading device according to the first embodiment of the present invention.

FIG. 3 is an output waveform diagram of the CCD image sensor in which the light amount is changed according to the material of the present invention.

FIG. 4 is a side view of a main portion of a coin reading device according to a second embodiment of the present invention.

FIG. 5 is a side view of a main part of a coin reading device according to a third embodiment of the present invention.

FIG. 6 is a side view of a main part of a coin reading device according to a fourth embodiment of the present invention.

FIG. 7 is a control circuit block diagram of a coin reading device according to second to fourth embodiments of the present invention.

FIG. 8 is an output waveform diagram of a CCD image sensor in which the threshold level or the amplification factor is changed according to the material of the present invention.

FIG. 9 is a flowchart showing the processing operation of the coin reading device according to the first to fourth embodiments of the present invention.

FIG. 10 is a side view of the main parts of the coin reading device according to the fifth embodiment of the present invention.

FIG. 11 is a side view of essential parts of a coin reading device according to a sixth embodiment of the present invention.

FIG. 12 is a control circuit block diagram of a coin reading device according to a fifth embodiment of the present invention.

FIG. 13 is a flowchart showing the processing operation of the coin reading device of the fifth to sixth embodiments of the present invention.

FIG. 14 is a side view of a main portion of a coin reading device according to a seventh embodiment of the present invention.

FIG. 15 is a side view of a main part of a coin reading device according to an eighth embodiment of the present invention.

FIG. 16 is a side view of the essential parts of a coin reading device according to a ninth embodiment of the present invention.

FIG. 17 is a control circuit block diagram of a coin reading device according to seventh to ninth embodiments of the present invention.

FIG. 18 is a flowchart showing the processing operation of the coin reading device of the seventh to ninth embodiments of the present invention.

FIG. 19 is a schematic side view of a conventional coin reading device.

FIG. 20 is an output waveform diagram when the detection condition of the conventional coin reading device is constant.

[Explanation of symbols]

11, 41, 51, 61, 101, 141 ... Coin reading device 13, 42, 52, 62 ... Material detection sensor 14, 43, 53, 63, 104 ... Pattern reading detection sensor 21, 71, 121, 171 ... CPU 103 , 113, 163 ... Outer diameter detection sensor 142, 151, 161 ... Pattern reading detection sensor 143, 152, 162 ... Material detection sensor 144, 153, 164 ... Thickness detection sensor 145 ... Outer diameter detection LED array 154 ... Outer diameter CCD image sensor for detection V1 to V3 ... Thresholder level A1 to A3 ... Amplification factor C ... Coin

Claims (4)

[Claims] 1. A coin reading device for reading coin type data to determine a denomination, wherein first coin reading means for reading the coin type data and type data read by the first coin reading means. Reading condition setting changing means for changing the setting to coin reading conditions corresponding to the above, and second reading the coin type data under the coin reading conditions changed by the reading condition setting changing means.
Coin reading device comprising: 2. The coin reading device according to claim 1, wherein the reading condition setting changing means changes the setting to a coin reading reflection condition suitable for the type data read by the first coin reading means. 3. A coin reading device for determining the denomination by reading coin type data, wherein a plurality of types of reading means having different coin reading standards and the plurality of types of reading means are used for parallelizing the coin pattern data. A coin pattern reading device provided with a parallel reading means for performing reading processing. 4. The coin pattern reading device according to claim 3, further comprising a selection unit for selecting read data corresponding to the type of coins read by the parallel reading unit.