JPS5845223B2 - public telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a public telephone, and more particularly to a public telephone that can easily cope with changes in currency and can be used in various countries with different currencies.

In general, public telephones are comprised of a coin processing unit that only processes coins, and a talking unit that allows a call when conditions for the coin processing unit are satisfied.

Various public telephones of this type have been proposed, but generally the coin processing unit mechanically sorts the coins by their thickness, outer diameter, weight, etc., and then sorts the coins into genuine coins and counterfeit coins. A method has been adopted in which mechanical contacts such as a coin storage contact and a coin storage contact are operated by a genuine coin.

These mechanical contacts were embedded within the communication unit.

However, in such public telephones, since the coin processing unit that performs processing from sorting to sorting of inserted coins performs mechanical processing, the target coins are fixed, and currency changes such as denominations etc. There was a problem that it could not be followed.

Furthermore, most foreign countries have different currencies, so there is a drawback of lack of versatility.

In view of the above points, the present invention has been made to solve such problems and eliminate such drawbacks.The purpose of the present invention is to be able to easily cope with currency changes, and to be able to easily deal with currency changes, and to be able to easily deal with currency changes and to Our goal is to provide public telephones that are as versatile as ever.

In order to achieve such an object, the present invention allows each operation such as sorting, returning, and sorting of coins to be performed electrically in a coin processing unit, and also allows the coin processing unit to perform various operations such as sorting, returning, and distributing coins. The operation of each call unit that performs predetermined call processing is controlled by one processor.Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram showing the structure of the coin storage section of a public telephone according to the present invention. For example, coin 1 (10 yen), coin 2 (50 yen),
This example shows a case where low-denomination coins such as 3 (100 yen), coins (100 yen), coins, and high-value coins can be used.

In order to facilitate understanding of the present invention, this will be explained first.

In the figure, 1 is a coin input port, and a coin C inserted through the coin input port 1 is passed through a material discriminator CO and a coin detector DA1. DA2 enters the second ramp 3 via the first ramp 2 arranged on both sides, and is connected to the material discriminator CO and the coin detector DA1. As the accumulation coins '+-4 to 6, which are driven according to the authenticity and outer diameter of the coin determined by the detection output of the DA2, retreat to the side of the second slope 3, low-denomination coins are The coins are dropped into the pocket 7, biological coins into the upper class pocket 8, and high-value coins into the high-value pocket 9, and are stacked one by one by pressing against storage levers 10 to 12, and are accumulated by type of coin. ing.

Since the accumulation levers 4 to 6 do not operate, defective coins or counterfeit coins are configured to roll on the accumulation levers 4 to 6 and be returned to the coin return port 13.

In addition, the return lever 14 can be turned on by on-hook when a call ends.
is operated to return all remaining coins accumulated on the storage levers 10 to 12.

Note that the material discriminator CO uses a coil connected to an oscillation circuit, and the output of the oscillation circuit changes as the coil is affected by the magnetic permeability or permeability depending on the material of the coin. The material of the coin is determined by the change in output.

In addition, the coin detector DA1. The DA2 is provided with a light emitting element such as a photodiode and a light receiving element such as a first transistor facing each other, and detects a coin depending on the presence or absence of light receiving input to the light receiving element depending on the presence or absence of a coin. The time required for a coin to pass through the part of the coin detector DA1 is t1, and the time required from when the coin passes through the part of the coin detector DA1 until the coin passes through the part of the coin detector DA2. The outer diameter of the coin is determined based on the ratio to t2.

The details are disclosed in a separate application filed by the applicant of the present invention (Japanese Patent Application No. 1.07701/1982).

In addition, in Fig. 1, the coin detector r)A1゜D
Coin detectors cR1 to cR3, cc1 to CC similar to A2
3. CK1 to CK3 and MR are provided, the coin detectors CR1 to CR3 detect the number of accumulated coins, the coin detectors CC1 to CC3 detect waiting coins just before storage, and the coin detector The storage levers 10 to CK3 are configured to detect coins to be stored and the coin detector MR to detect coins to be returned.
When only one waiting coin is stored by the movement of the coin detector 12 moving back to the side, the detection outputs of the coin detectors CC1 to CC3 disappear and the detection outputs of the coin detectors CK1 to CK3 are generated, so that the coin is securely stored. It is configured to confirm that the item has been stored in the storage safe 15.

Further, the number of remaining coins is calculated from the difference between the number of stored coins based on the detection outputs of the coin detectors CR1 to CR3 and the number of stored coins based on the detection outputs of the coin detectors CK1 to CK3.

Note that the total number of returned coins determined by the coin detector MR and the total number of accumulated coins is determined by the coin detector DA1 or DA2.
The coin detector MR must match the number of coins inserted according to the detection output of the coin detector MR, and a coin detector MR is provided in order to confirm the number of accumulated coins by performing calculations based on this principle.

The coin storage unit is configured in this way, but when various coins are stored, low denomination coins are stored preferentially according to the billing signal from the exchange machine, and when medium and high value coins are stored, the stored amount is The next coin storage is performed based on the billing signal after the call time corresponding to the billing signal has elapsed.

Further, the storage safe 15 is equipped with an electromagnetic accumulation counter, which is configured to register based on the detection outputs of the coin detectors CK1 to CK3, and when the storage safe 15 reaches a count number that is almost full. , the storage counter is configured to send out a full signal.

However, the accumulation counter is registered according to the volume ratio of medium and high value coins based on the volume of low value coins. For example, when the volume of low, medium and high value coins is 1 = 4:6, low value coins It is registered once, but when it is a living coin, it is registered four times,
For high-value coins, registration is performed six times.

Note that the accumulation counter is configured to be automatically reset when the storage safe 15 is removed.

FIG. 2 is a block diagram showing an embodiment of the public telephone according to the present invention, in which the material discriminator CO1, each coin detector DA,'DA2°CR1 to CR in the coin storage section shown in FIG.
3, CC□~CC3, CK1~cK3°MR and storage magnets SM1~SM3 that drive each lever 4~6, 10~12, 14, storage magneto l-CM1~CM3,
This figure shows the entire configuration of a public telephone (hereinafter abbreviated as telephone), including a return prevention magnet I-RM and the like.

A coin processing circuit CCC and a control circuit MCC are provided as a control device, and the coin processing circuit CCC mainly controls the coin storage section based on each detection output from the coin storage section, and also realizes the original functions of the telephone. Control circuit MCC performs various controls based on each detection output from each circuit.
is configured to do so.

That is, in order to realize the original functions of the telephone, a talking circuit device consisting of a transparent wire ring, a hand separator 1, etc. is provided, and a relay for closing the loop circuit is installed between the talking circuit device and the line terminal LTB. G
S, a call control circuit TCC consisting of a relay SS for shorting dial impulse contacts, a light emitting element and a light receiving element for loop current detection, and a diode bridge for always passing current in the same direction to the light emitting element is inserted,
On the other hand, a button button dial DAI is attached.

In addition, a billing signal receiving circuit CP using a bandpass canceler and an amplification detector is connected to the line terminal LTB via a bridge, and this allows the frequency to be sent from the exchange every unit call time. It is configured to detect billing signals such as 50Hz or 16KHz.

Note that the warning sound sending circuit WT generates a warning sound with a frequency of 250 Hz, etc., and the oscillation circuit is activated under control from the control circuit MCC, and the warning sound is sent to the receiver of the handset in the communication circuit device via the matching transformer. The system is configured to provide a sound to remind the user to insert coins and to notify the user that a failure has been detected.

However, although the coin insertion reminder is an intermittent sound, the failure detection notification is a continuous sound.

In addition, the control circuit MCC is activated when the hook switch H is turned on due to off-hook, and the power supply circuit PW is also configured to generate an output when the hook switch H is turned on at the same time. By sending and receiving CDA and CDEN, failure detection information is mutually exchanged within the self-assigned range.

In addition, the control circuit MCC drives the display section DIS1 on the front surface of the telephone, which uses a character display and an indicator light such as a light emitting diode. It is configured to individually display a reminder to insert coins, an indication of an unusable state based on failure detection, and an indication that the storage safe is full.

When a failure is detected, a code corresponding to the failure location is displayed in the form of numbers or alphabets on a character display by operating a maintenance switch (not shown in the figure).

On the other hand, the coin processing circuit CCC is also configured to drive the display section DIS2 inside the telephone using a character display, and when a failure within the self-sharing range is detected, a code corresponding to the failure location is displayed. , is configured to clearly indicate the location of the failure to maintenance personnel.

FIG. 3 is a block diagram showing an embodiment of the coin processing unit which is a component of the public telephone according to the present invention, and shows the structure of the coin processing circuit and the signal input/output situation.

In FIG. 3, the same reference numerals as in FIG. 2 indicate corresponding parts, and the coin processing circuit CCC includes a processor such as a microprocessor CPU1, a storage device (hereinafter referred to as memory) ROM1, and an auxiliary storage device (hereinafter referred to as memory). It is composed of RAM1 (referred to as auxiliary memory) and an input/output circuit l101.

A fixed memory is used as the memory ROM1, and programs for sorting and sorting coins are stored in this memory.
A rewritable variable memory is used as M1, and is configured so that various information required for operation as the coin processing circuit CCC is stored sequentially.

Although not shown, this coin processing unit also includes an oscillator, a detector, a comparator, etc., and a material discriminator C.
The coin detector DA1.O uses the detection signal SoO from the coin detector DA1. A timer TM1. which generates a predetermined output signal based on the detection signal 5DAt' 5DA2 from the detection signal from DA2. A control device is provided which inputs TM2, their outputs, and detection signals SMI (p S 0I (1p S'CRs) from the coin detectors MR, CR□ to CR3.

This control device includes various gate circuits, counters,
Material discrimination memo IJ M J M, storage processing memo IJC8M, which uses rewritable random access memory ROM, etc., centering on a control section consisting of registers etc.
, return processing memory CRM, material constant memo IJ M CM using multi-switch, DIP switch or read-only memory ROM, diameter constant memory DCM, etc. are used, and according to the write signal and read signal from the control section, It is configured so that predetermined information can be written or read.

In addition, the control device includes timers TM1 and TM2.
A calculation unit such as a divider that calculates the outer diameter of the coin based on the output of the calculation unit, and the diameter determination result of this calculation unit and the diameter constant memo IJD.
Make a comparison with the contents of cM and take a note on material identification 'J.
A comparison section using a comparator, etc., which compares the material discrimination output from MJM with the contents of the material constant memo IJMcM and determines the quality and type of coin, and timers TC1 to TC3, which perform various timing regulations. A TSM is provided and configured to operate according to the flowchart described below.

Next, an outline of the operation of the embodiment shown in FIG. 3 will be explained.

First, when power is applied from a power supply circuit (not shown), it enters an operating state, and at this time, the processor CPU1 clears all addresses of the auxiliary memory IJRAM1, and outputs signals SSMt to 55M3' via the input/output circuit 101.
sD□8□ is set to a reset state, that is, to a low level (hereinafter referred to as t+011), and an initial state is set.

After that, the processor CPU immediately stores the memory IJROM1.
The program starts reading out the program, and the coin sorting and sorting operations are controlled according to this program.

In addition, the detection signal Sco from the material discriminator CO, the detection signal 5DA1゜5DA2 from the coin detector DA, DA2,
Detection signal SM□ from coin detector MR, coin detector CR
Detection signals from 1 to CR3 5O1 (, I to 5cR3, excitation signals for storage magnets SM1 to SM3 (hereinafter referred to as excitation signals) 88M1 to 55M3, display signals to display section DIS2 SD The signal CDA- from the rotation control CC and the failure signal CDEN from the coin processing circuit CCC are sent and received via the input/output circuit 1101 and a predetermined drive circuit or buffer circuit, etc., which are omitted in the figure.

FIGS. 4a and 4b are flowchart 1 for explaining the operation of the coin processing unit shown in FIG. 3.

Note that in this flowchart and the following flowcharts, the symbols in the decision boxes are shown with the S of each signal omitted.

First, in FIG. 4a, after the entire circuit is started by power-on or off-hook, etc., coin C is inserted and the detection signal 5DAI is generated as a high level (hereinafter referred to as 1), as described above. The material of the coin C is determined.

Then, the discrimination result is stored in the material discrimination memo IJMJM, and the measurement at time t1tt2 is started. When the detector +3'5DA2 becomes 1..., the measurement at time t2 is completed and the detection signal 5DAI is・0・If you return to Tehe, time t
1 is also completed, and the diameter constant A-cc of the coin C is calculated based on the measurement result at time t11t2.

This value is the content C1~ of the diameter constant memo IJDcM.
It is sequentially compared with C3 (C1,, -L゛coin 1 diameter number (-ql), C putty coin 2 diameter constant (i,), C3: coin 3 diameter constant (, -,)), for example, 10 yen. For coins (Acc):
When the coin is a 150 yen coin, the character C2 (Aoo) is satisfied, and when the coin is a 100 yen coin, the character C3 is satisfied, and the coin type is determined based on the outer diameter.

Next, by comparing the discrimination output stored in the material discrimination memo IJM JM with the contents of the material constant memo IJMcM, it is checked whether the material is suitable for the determined coin type. If the contents of the memory MJM are set to 0.
It is determined that the coins should be stored, and the information determined to be good is registered in the storage processing memory C8M.

Then, according to the storage process registration in the storage process memo IJcsM, timer TC1 starts when the coin is a 10 yen coin.
According to the time-up, check whether there is a return processing registration in the return processing memo IJcRM, and if there is no return processing registration, it is assumed that the excitation signal SSMI is not 1, that is, the storage lever 4 is in the process of being restored. Detection signal 5
cRx is checked, and if it is not n1n, the excitation signal SSMI is set to .1 and sent out, and the accumulation lever 4 is operated to accumulate coins C.

If the coins C are accumulated smoothly, a detection signal S is generated.

L(,1 becomes ・1-9, which causes the excitation signal SS
MI is returned to nQn, the accumulation lever 4 is restored, and the accumulation processing registration in the accumulation processing memo IJCSM is erased, thus ending the series of coin accumulation operations.

In contrast to the above, even if the accumulation lever 4 is actuated by the excitation signal 55M1, 1..., if the detection signal Sc[(,1 does not become 1..., then the excitation signal S is activated by the excitation signal SMI, 1... Along with the time amplifier of the timer TSM, the excitation signal SSMI is forcibly set to O to restore the storage lever 4, and upon determining that an abnormality such as storage failure has occurred, the storage processing registration in the storage processing memo IJcsM is deleted. At the same time, this information is registered in the return processing memo!J CRM, and if the detection signal SM□ becomes ・1, it is determined that the coin C has been returned, and the return processing memo!JCRM returns processing. Delete registration.

However, as long as the detection signal SM□ is 5.0 and it is registered in the return processing memo IJcRM, the above state will be maintained, so the return processing memory CRM will be In the registration check, the coin accumulation process for subsequent coins is stopped in order to proceed to the registration deletion of the accumulation process memory C8M.

Also, coin 2 (50 yen coin), coin 3 (100 yen coin)
The same applies when it is determined that the defective material is defective, but if it is determined that the defective material is defective in material or diameter, it is registered in the return processing memo IJcRM and the return processing is performed.

The detection forces of the coin detectors CC□ to CC3 and CK1 to CK3 are used in a separate control device, and this control device is configured to drive the storage levers 10 to 12 and the return lever 14. .

FIG. 5 is a block diagram showing an embodiment of a telephone call unit which is a component of a public telephone according to the present invention, and shows a control circuit MC.
This figure shows the configuration of C and the signal input/output status.

In FIG. 5, the same reference numerals as those in FIG.
, an auxiliary memory RAM, and an input/output circuit 102.

A fixed memory is used as the memory ROM2, which includes confirmation of transmission conditions based on the coin accumulation information from the coin processing unit described above, billing signal reception, charge processing, coin storage, forced call disconnection, hook switch monitoring, and coin return. Programs for performing each operation are stored, and
A rewritable variable memory is used as the auxiliary memory IJRAM2, and is configured to sequentially store various information necessary for the operation of the call control circuit MCC.

Next, the operation of the embodiment shown in FIG. 5 will be explained.

First, when off-hook is performed prior to using the telephone, an off-hook signal sH from the hook switch H is given to the processor CPU 2 via the input/output circuit 102.
At the same time, the power supply circuit PW also generates an output in response to the off-hook signal sH, so that the control circuit MCC becomes operational.

At this time, the processor CPU2 uses the auxiliary memory RA.
While clearing all addresses of M2, input/output circuit l1
Each output signal 5PrSD□8. is set to a reset state, that is, to a low level (0), for example, and an initial state is set.

In this case, the control point is the call control circuit TCC.
1 Charging signal receiving circuit CP, coin detectors CR1 to CR3,
CC1 to CC3, CK1 to CK3, a storage safe storage counter CUT, a safe installation switch CB such as a reed switch that operates when the storage safe 15 is securely installed in a predetermined position, and a failure signal CDEN from the coin processing circuit CCC. Immediately after setting the above-mentioned initial state, the processor CPU2 starts reading out the program from the memory ROM2, and according to this program, the communication unit transmits the call based on the coin accumulation information from the coin processing circuit CCC. It sequentially controls the following operations: condition confirmation, charge signal reception, charge processing, coin storage, forced call disconnection, hook switch monitoring, and coin return.

Note that the transmission and reception of each of the above-mentioned signals is performed via a predetermined drive circuit, buffer circuit, or the like.

In addition, a signal SPW is applied to the power supply circuit PW to generate a power output for a certain period of time even after on-hook, thereby maintaining the operation of each circuit.

Next, the operation of the communication unit shown in FIG. 5 will be explained in detail with reference to the flowchart shown in FIG.

First, start by turning on the power off-hook, and after initializing the initial state settings, send out the signal SOS through the input/output circuit 1102 to activate the relay GS, form a loop circuit to the exchange, and close the communication path. to be accomplished.

In other words, this communication unit is of a first-loop type.

Thereafter, a self-diagnosis is performed on predetermined inspection points of the public telephone, and if it is determined that there is no failure, the coin return roughening magnet is activated.

Then, when coins are waited for to be inserted and the total accumulated amount SUM of specie coins sorted and sorted by the coin processing circuit CCC is greater than or equal to the unit call charge T, that is, (SUM)>T, the input/output circuit determines that the calling condition is satisfied. It sends a signal SSS through l102 to operate relay SS and permit dialing.

At the same time, a signal SPW is sent to the power supply circuit PW to maintain the power supply.

Here, if the hook is turned on before the power is maintained, the power is automatically cut off, and if the coin return prevention magnet is operating, it is restored, and if coins are accumulated, they are returned.

On the other hand, after power is maintained, the state of hook switch H is monitored while waiting for a charge signal, and when on-hook is detected, the communication path is opened, and the return prevention magnet is restored.
The power is maintained for a certain period of time to maintain the operation of each circuit.

Then, after the above-mentioned dial sending permission is given, dialing is performed, and when a billing signal arrives from the exchange along with a response from the called party, the billing signal receiving circuit CP receives this and determines whether or not to send out a reminder sound for inserting coins. make a judgment.

This corresponds to the unit call charge T corresponding to the currently received charging signal and the charging signal that will arrive next.

Then, when the sum of the total accumulated amount SUM and the fraction BL is smaller than the sum 2T of the unit call charge T, a reminder sound is sent out from the warning sound sending circuit WT.

Here, if the sum of the total accumulated amount SUM and the fraction BL, that is, (SUM)+(BL)≧2T, no reminder sound is sent.

Thereafter, it is determined whether the current fee collection can be absorbed with only the fractional BL, or whether new coins should be stored.

In other words, if the fraction BL is greater than the unit call charge T,
I decided that there was no need to store new coins, (BL)
-(T)- BL is rounded, the remaining power for this fraction BL is displayed on the display section D I Sl, and the next billing signal is awaited.

On the other hand, if the fraction BL is less than the unit call charge T, it is necessary to store new coins, so the presence or absence of accumulated coins is monitored, and if there are no accumulated coins, the call is forcibly disconnected (forced).

At this time, for example, monitor coins in order from low denomination coins to high denomination coins,
If there are accumulated coins, the accumulated count value of the corresponding coins counted by coin detectors CR1 to CR3 is subtracted, and a new fraction BL is obtained.
(VLN) + (BL) - (T) - BL to produce
Performs rounding.

Here, VLN is the amount of coin N. After processing the fraction, the remaining number for the fraction is displayed on the display section DI81, and the storage magnet CM of the coin to be stored is displayed.
operate and store coins.

If the receipt is not confirmed for a predetermined period of time, it is determined that the coin is fraudulent and the call is forcibly disconnected.

Once storage is confirmed, the storage magnet commercial will be restored,
Wait for the next charging signal.

At this time, the accumulation counter CUT performs a counting operation corresponding to, for example, the mass of the coins stored in the storage safe 15.

As is clear from the above description, according to the present invention, the setting constants for the outer diameter and material of the coin processing unit can be set in the case of a currency change or specification change in which the outer diameter and thickness of the input coins hardly change. In addition, in the case of a major change in the outer diameter or thickness of the coin or a change in the specifications, it can be handled by replacing the coin processing unit, which is extremely versatile and can reduce costs. Because it can be done, the practical effect is extremely dog-like.

As described above, the present invention has great effects compared to conventional public telephones, can easily cope with currency changes, and can be used as a public telephone that is versatile for use in countries with different currencies. is unique.

[Brief explanation of drawings]

Fig. 1 is a diagram for explaining the coin storage track portion of the public telephone according to the present invention, Fig. 2 is a block diagram showing an embodiment of the public telephone according to the present invention, and Fig. 3 is the constituent elements of the present invention. A block diagram showing an embodiment of the coin processing unit, FIGS. 4A and 4B are flowcharts for explaining the operation of the coin processing unit shown in FIG. 3, and FIG. FIG. 6, a block diagram showing the embodiment, is a flowchart for explaining the operation of the communication unit shown in FIG. CCC... Coin processing circuit, MCC...
Control circuit, CPU1. CPU2... Processor, ROM□. ROM2...Memory, RAM1. RAM2...
...Auxiliary memory.

Claims (1)

[Claims] 1. In a public telephone consisting of a coin processing unit which performs the process of sorting input coins and then sorting them into genuine coins and counterfeit coins, and a telephone call unit which performs predetermined call processing depending on the presence or absence of accumulated coins, the above-mentioned a first processor that controls each operation of sorting and sorting coins in the coin processing unit according to a pre-stored program; and confirmation of transmission conditions and reception of billing signals in the communication unit based on coin accumulation information from the coin processing unit. , charge processing, coin storage,
A public telephone set comprising: a second processor that controls the operations of forced call disconnection, hook switch monitoring, and coin return according to a prestored program.