JPS62251994A - Count processor for coin sorter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Technical field of IJ) This invention is based on 6f! i'' relates to a counting processing device of a sorting machine, in particular, the mixed denomination hard 11f is moved to the periphery by the centrifugal force caused by the rotation of a rotating disk, and has sorting slots arranged in order from small diameter to large diameter. The present invention relates to a counting processing device for a coin sorting machine that feeds coins to a coin sorting passage and sorts mixed denomination coins by denomination.

(Technical fishing table J9 of the invention and its problems) This kind of conventional fishing stand 1! As disclosed in Japanese Unexamined Patent Publication No. 59-20868455 by the applicant of this patent, the sorting machine adopts a classification method based on the outer diameter that utilizes the difference in diameter of hard 1Y, and it is possible to classify coins of mixed denominations. As the L stage for counting, two counting means as shown below are provided.

The first counting means is an optical sensor (e.g. an image sensor)
is installed in the middle of feeding the coins from the rotating disk to the sorting passage, and determines the authenticity, denomination, etc. of the coins being fed, counts true coins by denomination, and
This count value is displayed by denomination. On the other hand, the counting means of fjS2 is a magnetic sensor, which is sunk in front of each sorting slot in the sorting passage, and counts the number of coins that actually fell into each sorting slot and was sorted for each denomination. to be counted. Then, the counted value by denomination by the first counting means and the counted value by denomination A1 by the second counting means are respectively compared and verified, and as a result of this comparison, if the counted values do not match or match, As soon as an alarm is issued, the count is restarted.

In the counting processing device of the conventional coin sorting machine with such a configuration, since an optical sensor is used as the counting means of the ftSi, dust etc. may adhere to the optical sensor and cause erroneous counting, resulting in the above two counting There is a discrepancy in the counts of the means,
” may result in a series of mismatch/match processing.

Also,? If a material sensor is used as a counting means for tSl, erroneous counting due to dust etc. will be eliminated, but erroneous counting will occur for denominations with close threshold levels. Here, J-note t
Since the counting means of 52 is the outer diameter sorting using the above-mentioned sorting hole, 1. For example, 1 yen coin and 10 yen coin, etc., 2. Only between denominations that have a clearly large difference in outer diameter. If there is a discrepancy in the counting a4 by means, this f
The count value by the counting means at t52 is sufficiently reliable. However, with conventional coin sorting machines, the only way to handle discrepancies is as described above, and there is a problem in that the extra work of re-counting is required.

(Purpose of Part 11) This invention was made from the above-mentioned passion for moss.
The purpose of this invention is that if the count value by IJJ is reliable between specific denominations,
To provide a counting processing device for a coin sorting machine that can accurately count without being processed as a mismatch even if a discrepancy occurs in the counting (f) between a first counting means and a second J1 counting means. It's about doing.

(A main point of the invention) This issuing IN+ supplies mixed coins of various denominations onto a rotating disk, moves them to the periphery by the centrifugal force caused by the rotation of the rotating disk, and sends them out, arranging them in order from small diameter coins to large diameter coins. Concerning a counting processing device for a coin sorting machine that sorts coins of mixed denominations by denomination by feeding them into a coin sorting passage having coin sorting holes in the bottom plate, Ru&j! The first counter that determines the denomination of coins and counts the number of coins for each denomination.
Further, a first storage means for storing the number of coins of each denomination counted by the first counting means, and a first storage means are respectively provided in front of the sorting slot in the coin sorting passage, 18 second counting stages for counting the number of passing coins; and calculation means for calculating the number of coins of each denomination introduced into the sorting slots from the number of coins counted by the second counting means. , a second storage means for storing the calculated coin size by denomination, and the above-mentioned ft.
5l storage means and the second storage means, respectively, for comparing the number of coins by denomination, and when the number of coins by denomination is detected to be inconsistent only between specific denominations, the above-mentioned The control sub-actor is configured to fix the number of coins of the denomination stored in the first storage means to the number of coins of the denomination stored in the second storage means using the iEL.

(Embodiments of IJJ) The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows an embodiment of the coin sorting machine according to the present invention, in which a rotary disk 2 is rotatably supported on a base plate l by a car 2^, and the outer circumference of the rotary disk 2 is A peripheral wall 3 is provided. A bottom plate 4 is fixed to the plywood th, and the surface thereof forms the same V surface as that of the rotating disk 2, and the coin passage wall member 6.7 is opposed to the bottom plate 4. A coin stopping passage 100 is formed, and coin sorting slots 5A, 5B, . - There is a roller 6A at the entrance end of the passage wall member 6 on the side, and the rotation circle l1
The inlet end of the other passage wall member 7 is arranged along the linear direction of the periphery of the rotary disk 2 . Furthermore, a notch 6B for retracting the coin blocking member 8 is formed in one of the passage wall members 6. A material sensor 3^ that uses a magnetic sensor that magnetically detects coins is provided as a first counting means at the starting end in the coin feeding direction of the coin stopping passage +00, and a material sensor 3^ that utilizes a magnetic sensor that magnetically detects coins is provided as a first counting means. t1
0 is detected, and the denomination discrimination section 9 counts the denominations and the number of coins for each denomination.

Now, regarding this material sensor 9A.

The technique described in detail in the specification of Japanese Patent Application No. 60-295449 filed by the applicant for the Wood Patent Application can be used.

Also, rf! The upper surface of the cargo blocking member 8 protrudes from the upper surface of the bottom plate 4 and is connected via a connecting piece of a solenoid plunger (not shown). When this solenoid is not energized, the built-in spring fits into the notch of the passage wall member 6 and retreats, as shown by the solid line, so that the passage of the coin 10 is not obstructed. As shown in the figure, it protrudes above the coin path to prevent the coin IO from advancing. Further, on the first side of the coin stopping passage 100, an introduction belt 2 is provided from the entry 11 portion facing the rotation circle gi2.
G is provided, and this introduction belt 20 is connected to a pulley 21
．． It is wound around 22. And this pulley 21.2
2 is set at a predetermined height position with respect to the top surface of the coin stop passage 100 (a height position at which the belt 2G contacts the top surface of the coin 10G with a predetermined pressing force and can feed the coin IO). It has become. The starting end of the conveyor belt 30 is wound around pulleys 31 and 32, and is bent by the pulley 33 at a substantially right angle toward the coin sorting path 200. Further, the end of the passage wall member 7 has a curved side surface 34 that guides the coin 10 along the curve of the conveyor belt 30.

On the other hand, the coin sorting passage 200 of the bottom plate 4 has sorting slots 5A,
5B, . . . 5F are arranged in order from small diameter ones to large diameter ones, and these sorting slots 5A, 5B, . . . 5
In front of F is a magnetic sensor IIA- as a second detection means for magnetically detecting the passing coin 10.
11F, and transfer belts 41A and 418 each having a round cross section are linearly arranged above the five sorting slots 5A to 5F. One of these transfer bells 41A and 41B is wound around a pulley 42, and the other is wound around a pulley 32 on the downstream side of the conveyance belt 30. Note that 43 is located in the -1 part of the sorting slots 5A, 5B, .
A guide roller 44 is located at an intermediate position between the sorting slots 5^, 5B, . 41A.

This is a boob that prevents movement of 41B. Also, 45 is coin I
46A to 4111E are positioning rollers for guiding the coins 10 to the proper positions in the sorting slots 5A, 5B, . . .
A reference roller having the same diameter and shape is provided on the side corresponding to A to 5E, and defines the position on one side of the coin 10 and determines the passage trajectory of the coin with respect to the sorting slots 5^ to 5E. Therefore, these knob semi-rollers 46^ to 48E are connected to the belt 41A,
41B. On the contrary,
The circumferential surface of the positioning roller 45 is located in front of the tangent to the reference rollers 46A-48E in FIG. 1, and the curved side surface 34 of the passage wall member 7 is located further in front of the circumferential surface of the roller 45. Therefore, the coin under the conveyor belt 30 is guided by coming into contact with the curved side surface 34, and the coin is fed under the pulley 32 without gradually changing the direction of conveyance under the conveyor belt 30. At that point, the coin is fed under the pulley 32. The belt 41A is positioned in contact with the belt 41A.

It is moved to the 41B and 1' lines, and it sticks out in the middle of the movement)
& Semi-rollers 46A to 48E! /I contact.

On the other hand, Bell) 41A, 410 are this λ semi-roller 46
In the vicinity of ^, the coin 10 and the bell are guided by the guide roller 43 to move in the direction of the tree 1, and after that I7r te, the pulley 32.44 restricts the movement in the water 41 direction, so the coin 10 and the bell) No slippage occurs between belts 41A and 418, and the change in the course of the coin due to contact with the circumferential surface of reference roller 48A causes a deflection in the direction of water 11 at a portion of belts 41A and 41B between pulleys 32 and 44. The restoring force of 41A and 41B due to the deflection is conversely fIA as the pressing force of the coin against the reference rollers 4eA to 48E,
The coin is moved along the circumference of reference rollers 48A-46E. Thereafter, when the coin reaches the most protruding point of the surface of the reference rollers 46A to 46E (the location where the guide roller 43 is provided in FIG. 1), the coin is positioned in the sorting slot 5A. If the coin is of a denomination corresponding to this sorting slot 5A, the most protruding point on the circumferential surface of the reference roller 46^ and the sorting slot 5^
Since the dimension of the opposite edge of the coin is slightly larger than the diameter of the coin of that denomination, the edge of the coin on the opposite side to the reference roller 48A is removed from the bottom plate 4 and the guide roller 43 is Through the pressing force, the coins are rapidly dropped into the sorting slot 5A by the bells 41A and 41B, and are stored in a temporary holding box or a deposit box (both not shown).

For coins that do not match the sorting slot 5^, the belt 41A,
With the pressing force of 41B and the restoring force in the horizontal force direction, the standard row 5
The reference roller 4 is further moved along the circumferential surface of the reference roller 4.
BA 1. n It returns to the course it was on before the collision. At this time, it comes into contact with the next reference roller 48B, performs the same operation as described above, falls into one of the corresponding sorting slots 5B to 5F, and is deposited into a deposit box (not shown) for each denomination. It will be stored. In addition, the movement of the belts 41^, 41B in the water flow direction in the screening slots 5B to 5F after the second IJ is controlled by pulleys 44 located before and after the first screening slot.
The dimensions of the sorting slots 5A to 5F in the direction perpendicular to the bells) 41A and 41B are slightly smaller than the coin diameter. Furthermore, sensors 500S11 to 1Sw are used in each temporary storage box and safe deposit box for 500 yen to 1 yen coins to detect whether or not the stored coins are full. The circuit configuration is shown in Fig. 2, and includes a CPU (microcomputer, etc.) 50 that performs overall control, and a RON 51 that stores control programs and other necessary data. RAll I52 that performs logging and reading is connected via a pass line, and an alarm such as a buzzer 'JA53. Sorting 81WIA! for driving the aforementioned sorting section! ! 17 A display device 55 that displays count data by denomination, operation guidance, etc. stored in the device 54 and the magnetic sensor counting memory area 521.
are each connected to cpuso via a pass line. Further, each detection value number of the magnetic sensor ports A to IIF is input to a counting circuit 56, and the data counted for each sensor here is transferred to the RAM 52.
The signals of the numeric keypad TK for inputting numerical data, the start key STK for instructing to start the coin sorting operation, the stop key STP for instructing to stop the operation, and the clear key CLK for clearing stored information are also input manually to the CPU 50. In addition, signals from sensors 500S to 1SW provided in each temporary holding box and safe deposit box are also input to the CPU 50, so that the coin storage state of the temporary holding box and safe deposit box can be grasped. The denomination and number of coins 1O passing through the slits 9^ and 9B are detected by the material sensor 8A, which is the counting means in 51 above, and processed by the denomination discrimination section 9, and the data is sent to the RAM 52 via the pass line. is stored in the memory.

Here, an example of the memory area in the RAM 52 related to this ff1lJJ is shown in FIG. 3 and explained.
52 is -1- counting memory area 5211 for material sensor which is counting means of memory 1; passage section counting memory area 522.
Mismatch flag area 5231 Number of sheets set memory area 5
24 and the magnetic sensor which is the counting means of fjS2]a has a memory area 525. The material sensor river counting memory area 521 contains the material sensor 9A.
The counting memory is composed of denomination-specific counting memories IP (1 yen coin) to 500PT (500 yen coin), which are counted by adding "+1" to each denomination according to the denomination signal determined by r1 by the denomination discriminating unit 9. The magnetic sensor counting memory area 525 is composed of counting memories IIAM to IFM which transfer and store the values counted by the counting circuit 56 for each sensor based on the detection signals of the magnetic sensors IIA to IIF. The passage counting memory area 522 stores the number of coins of each denomination determined by calculating the difference between the values of adjacent counting memories counted and stored in the magnetic sensor counting memory area 525. It has counting memory ISE (1 yen coin) to 500SE (500 yen coin), and the discrepancy flag area 523 has counting memory IPT to 500PT.
and ISE~500SE, and when they do not match, the inconsistency flag IFL~50 is turned on from off.
It has 0FL. In addition, one sheet number set memory area 5
24 is a memory l ST (
1 yen coin) ~ 500S coin (50O1lJ&!J!1'f
), the CPU 50 compares each coin number data stored in the counting memory area 521 for material sensor, and operates the coin blocking II member 8 on the coins that match the values to count subsequent coins. Try to stop sorting.

The operation of such a configuration will be explained below with reference to the flowchart shown in FIG.

The classification operation of the classifier as described above starts at $-5TK
Classification of coins as directed by.

Counting processing is executed (step S1). At this time, all of the discrepancy flags IFL to 500FL are turned off, and the rotation circle! The coin 10 in 2 is sent out to the passage as described above, and as the coin 10 is transported, the coin 10 is moved to the material sensor 8.
A, the denomination discrimination section 9 obtains a signal for detecting the denomination and the number of sheets, and the CPU 50 performs a calculation of "+ machining" corresponding to the denomination. 521 is stored in the corresponding denomination memory. Then, go through the coin stop + L aisle 10G to the hard IY classification aisle 20.
The coins conveyed to
At 5F, they are sorted according to their diameter, and magnetic sensor I
Detected by IA to IIF, the detection signal 1) is counted by the counting circuit 5B, and the count Ifi is sequentially transferred to the magnetic sensor count memory area 525 and stored. Each count f4 of the counting circuit 5G is incremented by "+1" according to the detection of the magnetic sensors 11^ to IIF, so that the sorting slot 5
The coin lO that has fallen into the temporary holding box or safe deposit box at A to 5F is not detected by the downstream magnetic sensor. Therefore, the magnetic sensor 1. The number of coins (1 yen to 500 yen) passing through IA is the largest, and the number of coins (500 yen) passing through magnetic sensor IIF is the largest.
0Fi) is the smallest number, sensor 1 according to the coin classification.
The number of 111 sheets decreases in the order of 1A to IIF.

Therefore, the values stored in the counting memories IIAM to IIFN of the magnetic sensor river counting memory area 525 are such that the value in the counting memory IIAM is the largest and gradually decreases according to the counting memory IIFM.

When the classification and counting of coins 1+f is performed in this way, it is first determined whether the coins in the storage box or safe deposit box are full or not via the sensors 500511 to +sw. If none of the temporary holding boxes or safe deposit boxes are full, the rotating circle ff
It is determined whether or not there are no coins in 1Z (step S3), and if there are coins in the one-rotation disk 2, the number set by the numeric keypad TK is stored in the number set memory area 524 and the number for the material sensor. A comparison is made with the value stored in the counting memory area 521, and it is determined whether or not there are coins with a matching number for any denomination (step S4).If there are coins, there are no coins with a matching number. If the temporary storage box or safe deposit box for any denomination is full of coins, or the rotation When there are no more coins in the disk 2 or when the number of coins reaches the number set in the number set memory area 524, the sorting process is stopped (Step S5), based on the number data counted and stored in the memory area 525 for the ffl Ki Senna river meter. , Calculate the number of coins of each classified denomination (step S6). This calculation is performed using the counting memo jJIIA Toyu IF.
)l by subtracting each adjacent data. That is, by subtracting the number of coins in the adjacent counting memory 118N from the number in the counting memory 11AM, the number of one yen coins that have passed through the magnetic sensor IIA can be calculated, and this number data is stored in the counting memory ISH.

Similarly, by subtracting the number of adjacent counting memories 110M from the number of counting memories l IBM, magnetic sensor 1
The number of 5 yen coins passing through 1B can be calculated,
The number of 5 yen coins is stored in the counting memory 5SE, the number of 10 yen coins is stored in the counting memory 103H, the number of 50 yen coins is stored in the counting memory 50SH, the number of 100 yen coins is stored in the counting memory 100sE, and the number of 100 yen coins is stored in the counting memory 100sE. The number of yen coins is stored in counting memory 500SH. Note that the number of 500 yen coins is a value stored in the counting memory IIFM.

In this way, the magnetic sensor river counting memory area 525
By subtracting the :1 number data of the adjacent memories of counting memory 11^N~11PM, the number of classified coins of denomination f+j is calculated and stored in counting memory ISE~5.
When stored in 00SE, the count data of the count memories IP7 to 500PT of the material sensor river count memory area 521 are compared according to steps 87 to SI8, that is, the values of the count memory 500PT and the count memory 500SE are compared and Step S to determine whether it is correct or not
7) If -fi has not been determined, the mismatch flag 500FL corresponding to the 500 yen coin is turned on (step S8).

If they match, the mismatch flag 500FL remains off. Similarly, count memory 1 corresponding to 100 yen coin
Compare the data in the 00P coin and the counting memory 100sE. Step 58) 1 If the two do not match, turn on the mismatch flag 100FL for the 100 yen coin (Step 5I
O), the same goes for 50 yen coins.

A comparison operation is performed for each 10 yen coin (steps Sll to 513).

Here, in this IJI coin sorting machine, the first counting means includes a material sensor 9^ consisting of a magnetic sensor.
Since it uses n1, there is no miscounting due to n1 dust etc. as in the conventional case, but as shown in Figure 5, which shows the main detection characteristics of this material sensor 9A, for example, 10 yen coins and 1
Among the detection output characteristic values for yen coins, the lowest limit of the output characteristic value c6 of the 10 yen coin and the highest limit a1 of the output characteristic value C5 of the 1 yen coin are almost the same f4, and these denominations As for , there is a rounding property that causes miscounting because it is difficult to judge.

On the other hand, the magnetic sensor 11^~I which is the second counting [stage]
The detection output characteristic f4 of IF is the same, but since the count limit by this magnetic sensor IIA-11F is sorted and checked by denomination by each sorting slot, If there is a clear difference in the outer diameter, such as a 10 yen coin and a 1-inner coin, this second
Counting by -1 stage is reliable by l·min.

Therefore, "-count r' of memory 1, material sensor 9 which is stage
δ1 number by A, l0PT and -1; I1 of counting memory l09E by magnetic sensor, which is the counting means of memory 2
Step 2: Compare and check whether they match or not.
+3), - If not, the count value of the 10 yen coin by the material sensor 9A, which is the first counting means, and 1
Total with the count value of yen coins, that is, count memory l0PT
Compare the total of the counting memory IPT and the sum of the 10 yen coin count value and the 1 yen coin count i4 by the magnetic sensor, which is the second counting means, that is, the sum of the counting memory 105E and the counting memory ISE. step 514),
The total number of both cards -・If not (Step S+5)
, it is either a simple miscount of 11 or a defective coin is mixed in, so the discrepancy flag l0F corresponding to the 10 yen coin is set.
Turn on L (step 519). On the other hand, if the total number of both matches in step SI5 of -h,
As mentioned above, this can be determined as an error in counting by the first counting means, so an error is displayed in step 51G), and the counted value of 10 yen coins jlI'' by the counting means of fjSl, i.e. The data of the counting memory l0PT and the count 4ti of the 1 yen coin, that is, the data of the counting memory IPT, are respectively calculated by the count value of the i0 yen coin by the second counting stage 1, that is, the data of the counting memory lOSH, and the data of the 1 yen coin. The count value, that is, the data in the count memory ISE, is corrected and confirmed (step 517), and the above display is changed according to this corrected number data (step S+8), and the counting process for this 10 yen coin is completed. Then, in the same way as for the 500 yen coin to 50 yen coin listed in L, comparison operations are performed for the 5 yen coin and the 1 yen coin, respectively (steps S20 to S523).

Then, due to the strangeness of these comparison processes, the discrepancy flag area 52
In step 524), it is determined whether or not there is a flag that is turned on in Step 524), and if there is no flag that is turned on, the number of denominations of coins that have passed through the material sensor 9A and the number of coins of all denominations are classified into one category. Since the number of coins sorted in the aisle 200 completely matches, the operation N-r assumes that there is no miscounting.
becomes. On the other hand, if there is a flag that has been turned on, a jW report is outputted via an alarm 'A53 such as a buzzer or a lamp (step 525), and the operator etc. is notified that an erroneous count has occurred. Thereafter, by pressing the clear key CLK, the data in each memory area in the RAl 152 is cleared, and the mismatch flag area 523 is also all reset and turned off (steps S2B, 5
27).

Note that the IIF possibility of miscounting due to the detection output characteristics of the material sensor 9A described above can also occur between a 100 yen coin and a 50 yen coin (02 and 01 in Figure 5), but the 50 yen coin They can be easily distinguished because of the hole in the center. In addition, in the above-described embodiment, the number of coins in each classification is calculated after the classification counting process is stopped, but when the magnetic sensor 118-11F detects a passing coin during one classification process, "one coin" is calculated. The calculation of "-1" may be performed in parallel from the value of the counting memory (IIA to IIEM) corresponding to the second-stream senna.Furthermore,
'' In the two series of embodiments, the number of coins in the counting memory is checked at the fI number of the 500 yen coin to the 1 yen coin, but this order can also be changed arbitrarily. Furthermore, magnetic sensors 11^ to II which are the detection means of tjS2
F can also be detected by optical sensors.

(Effects of the Invention) As described above, according to the miscount detection device of the present invention,
It is possible to reliably detect miscounts of coins during coin classification processing, and for specific denominations for which miscounts have been detected, the miscounts ftH can be automatically corrected. etc. can be easily known when the sorting machine stops during production X, and furthermore, even if a miscount occurs for a specific denomination, it will be corrected and confirmed, so it is necessary to treat it as an accident handling due to miscount. No, 11
Since there is no need to re-count exactly, there is an advantage that coins of many denominations can be counted efficiently.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of a coin sorting machine according to the present invention, and FIG. 2 is a circuit diagram thereof. The block diagram showing an example, the fjs3 diagram, is a diagram showing the memory area used in this invention, the i4 diagram is a flowchart showing an operation example of this invention, and FIG. . 1... Base plate, 2... Rotating disk, 3... Peripheral wall, 4...
...Bottom plate, 5A~5F...Coin sorting slot, 6,7.
...Coin passage wall member, 6^...Roller, 8B...Notch, 8...Member for coin f, 9...Denomination discrimination section, 9
^...Material sensor, 10...Coin, 20...Introduction belt, 21.22...Pulley, 30...Transport belt, 31-33...Pulley, 43...Guide roller, 45...Positioning roller, 48A~4EiE...
・Reference roller, 50...CPU (microcomputer, etc.), 51...ROM, 52...RAM
, 53... Alarm device, 54... Sorting unit drive device, 5
5... Display device, 56... Counting circuit, Ding K...
Numeric keypad, STK...Start key, STP...
Stop key, CLK...Clear key.

Claims (1)

[Claims] Coins of various denominations are fed onto a rotating disk, and centrifugal force generated by the rotation of the rotating disk moves them to the periphery and sends them out. Coin sorting slots for each denomination arranged in order from small diameter to large diameter are formed on the bottom plate. In a coin sorting machine that sorts mixed coins of various denominations by denomination by feeding them into a coin sorting passage, the coin sorting machine includes a first step that determines the denomination of the coins fed to the coin sorting passage and counts the number of coins for each denomination. a first counting means, a first memory means for respectively storing the number of coins of each denomination counted by the first counting means, and a first memory means provided in correspondence with each other in front of the sorting slot in the coin sorting passage. and a second counting means for counting the number of passing coins, and calculating the number of coins of each denomination introduced into the sorting slots from the number of coins counted by the second counting means. a calculation means, a second storage means for storing the calculated number of coins for each denomination, and a comparison for each number of coins for each denomination stored in the first storage means and the second storage means, respectively; and a comparison means for storing the number of coins of each denomination stored in the first storage means in the second storage means when a discrepancy is detected only between specific denominations of the number of coins by denomination. 1. A counting processing device for a coin sorting machine, comprising: control means for correcting and finalizing the number of denominations.