JP2932024B2 - Public telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a public telephone system comprising a public telephone (hereinafter referred to as "telephone") capable of making a telephone call with a card and a center device for preventing a telephone call using an illegally revoked revocation card. .

[0002]

2. Description of the Related Art In a telephone which makes a telephone call using a card such as a telephone card, in order to prevent a telephone call using a so-called invalid card which has been illegally rewritten, the following invalid card is conventionally managed. I have. That is, while registering all the revoked card numbers of all the telephones for which unauthorized use is predicted in the memory on the center device side for each telephone,
Since all the revoked card numbers cannot be registered in each telephone due to the memory capacity, the number of the revoked card, which is expected to be illegally used in each telephone, is transmitted from the center device to each telephone and registered in the memory of each telephone. I have. Then, when a card is inserted into the phone for calling, the phone reads this card number and compares it with the revoked card number registered in the memory, and if both numbers match, calling is prohibited. I have.

[0003]

In the above-described conventional management of a revoked card, since the center device manages all the revoked card numbers of all telephones for each telephone, the memory capacity of the center device is enormous. It is uneconomical, and it takes a long time to search because of the huge memory capacity when registering the revoked card number in the memory. Therefore, there is a problem that transmission time is required.

Accordingly, it is an object of the present invention to reduce the memory capacity of the center device when registering an invalid card number, and to efficiently perform memory search and transmission of the invalid card number of the center device.

[0005]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a method for successively losing data corresponding to each public telephone.
Storage means for storing the upper limit value and the lower limit value of the effective card number
On the revoked card number stored in the storage means.
Transmitting means for transmitting a limit value and a lower limit value to the public telephone;
The but on the center apparatus. In addition, the present invention
The public telephone system according to claim 2, wherein the storage
Means are the upper and lower limits of said consecutive revoked card numbers,
And the revoked card list number corresponding to both values
A first storage area for storing a revocation card list comprising:
Management information of each public telephone, corresponding to the public telephone
The revoked card list associated with the revoked card number
Store the management table consisting of the revocation card list number
A second storage area, wherein the transmitting unit is configured to
Referring to the management table stored in the storage area of
To the public telephone specified by the management information.
Send the revoked card list specified by the card list number.
Continuous revocation for each payphone
The feature is to transmit the upper limit and lower limit of the card number.
I do. In addition, the invention described in claim 3 is the above-mentioned center.
-The consecutive revoked card number sent from the device
Receive and store the upper and lower limits of
Pay phones that block calls based on the use of revocation cards
It is characterized by having.

[0006]

One list number is created for each of a plurality of consecutive revoked card numbers, registered in a memory in association with each management number of each telephone, and transmitted to the telephone based on the management number to generate a corresponding list. The number is sent. As a result, the memory capacity of the center device can be reduced, and since the memory search and the transmission of the revoked card number are performed based on the management table, the memory search and the transmission of the revoked card can be performed efficiently.

[0007]

FIG. 1 is a diagram showing an embodiment of a public telephone system according to the present invention, and is a block diagram of a telephone 10 constituting this system. In the figure, reference numeral 11 denotes an incoming call detection circuit for detecting an incoming call arriving at a telephone line (hereinafter, a line) L, 12 a ringer circuit for ringing an incoming call based on an incoming call signal, and 13 detecting a reversal of the line L due to a response from the other party. , A charging signal detection circuit for detecting a charging signal, and a D for receiving a DTMF signal arriving on the line L.
A TMF receiving circuit 16 is a strong-cut / DP sending circuit for forcibly cutting the loop of the line L and outputting a dial pulse (DP) signal to the line L, and 17 is a communication circuit. Reference numeral 18 denotes a DTMF transmission circuit for transmitting a DTMF signal to the line L; 19, a reminder sound transmission circuit for outputting a reminder sound when the telephone charge is exhausted; and 20, a variety of processing for an inserted telephone card or the like. A card unit, 21 is a display unit, 22 is a keyboard such as a dial key, 23 is a relay drive circuit, 24 is a power supply unit for supplying power to each unit of the telephone, 25 is a memory not shown and controls the above units. It is a control unit. HS1 and HS2 are hook switches, and gs is a relay.

[0008] Here, the telephone 10 responds to an incoming call from a center device to be described later,
Revocation card list that will be transmitted from the center apparatus, Sunawa
The upper and lower limits of consecutive revoked card numbers, and
The revocation card list numbers corresponding to these two values are received and stored. When the card is inserted into the card unit 20 detects the card number against the said revocation card <br/> list, the upper limit value and the lower limit value and the group contained in this
Then, if it is determined that the card is a revoked card, control is performed so as to block the call.

FIG. 2 is a block diagram of a center device 30 constituting the public telephone system. In the figure, reference numeral 32 denotes a line control unit for performing transmission control and reception control for the line group 31, reference numeral 33 denotes a display unit, reference numeral 34 denotes an input unit such as a keyboard, reference numeral 35 denotes a printer unit for performing print output, reference numeral 36 denotes a storage unit, and reference numeral 37 denotes a storage unit. This is a control unit that controls the above units.

The center device 30 creates an invalid card list and prevents the illegal call of the telephone 10 from being caused by the invalid card, and manages the invalid card list for each telephone. Hereinafter, a management table) is created. Then, the revocation card list is transmitted to each telephone according to the created management table.

Next, FIGS. 5A and 5B are explanatory diagrams showing an outline of an invalid card list and a management table created in the center device 30. FIG. As shown in FIG. 5A, the revoked card list number (revoked card list)
NO) A revoked card list with 1, 2, 3, ...
In the case of setting, the card NO, that is, the upper and lower limits of a plurality of consecutive revoked card numbers are set in the revoked card list.
It is set in the storage unit 36 as a single list with numbers. Also, when setting the contents of the management table, FIG.
As shown in (b), the number of each telephone (series number)
In accordance with 1, 2, 3,..., The management number, telephone number, and revoked card list number of the telephone are set in the storage unit 36.

Next, FIG. 3 is a flowchart showing the operation of the center device 30 for managing a revoked card. Based on this flowchart, the control unit 3 of the center device 30
7 will be described in detail. When the center device 30 is powered on and the control unit 37 is started, the control unit 37 determines one of “communication mode?” In step 100 and “setting mode?” In step 101. Then, a setting operation of a revocation card is performed in the input unit 34, and when “setting mode?” In step 101 and “creation of revocation card list?” In step 102 become “Y”, the operation of the input unit 34 is subsequently performed. The specified revocation card list number is entered in step 103. After that, the card number (the upper limit value and the
In step 104, it is determined whether or not to set the printout and the lower limit value by inputting the operation information of the input unit 34.

If it is determined that the revocation card list is set, the upper limit value and the lower limit value of the series number of the card that has already been issued and recognized as revoked are input in step 105, and these are entered into the specified revocation card. A list as shown in FIG. 5A is created together with the card list number, stored in the storage unit 36, and the process proceeds to step 107. When one expired card is set, a card number having the same upper limit and lower limit is specified. In this way, since a plurality of revocation card number is set as a single revocation card list, it is possible to reduce the storage capacity of the storage unit 36.

[0014] In addition, the specified from the operation information of the input unit 34
If it is determined that the print-out of the revocation card list, the corresponding revocation card list number and card number corresponding to the number (upper limit and lower limit) Step 106
Then, the data is read out from the storage unit 36, the printer unit 35 is driven to print out, and the process proceeds to step 107. In step 107, the setting of the revoked card number or the end of the printout is judged. If these are to be continued, the process returns to step 103, where the next specified revoked card list number is entered and the card corresponding to this list number is entered. The number (upper limit and lower limit) is set or printed out.

[0015] Thus, if the creation of a revocation card list is finished, the next the creation of a management table for managing the revocation card list number for each phone is done. That is, a predetermined operation is performed in the input unit 34, the "Create Revocation card list management table?" In step 108 is determined as "Y", followed by Cie Leeds number specified by operating the input unit 34 A certain management table number is input in step 110. Thereafter, it is determined by inputting the operation information of the input unit 34 in step 111 whether to set the contents in the designated management table or to print out the contents of the management table.

If it is determined that the management table is set, the telephone set corresponding to the designated management table number is set.
No. (series No.), telephone management number, telephone number of the telephone, and revocation card list number used for this telephone are created together with the designated management table number in a management table as shown in FIG. Then, the process proceeds to step 114. By creating such a management table in which the revocation card list number is set for each telephone, the memory of the center device can be saved, and the revocation card number set for each telephone can be easily registered. Further, as described later, when confirming the contents of the revocation card set in each telephone, the contents can be easily confirmed based on the management table.

Also, it is determined from the operation information of the input unit 34 that the contents of the management table are to be printed out, and
1, if it is determined to be "N", the designated management table number and the telephone number corresponding to this number (series
NO), the management number, the telephone number, and the revoked card list number are read from the storage unit 36 in step 113, and the printer unit 35 is driven to perform printout.
Move to. In step 114, it is determined whether the setting of the management table or the end of the printout is completed, and if these are to be continued, the process returns to step 110, where the next specified management table number is inputted and the telephone number corresponding to this table number is entered. (Series NO), telephone number, revocation card list number, etc. are set or printed out.

Thus, when the creation of the revocation card list and the management table is completed, and a predetermined operation of the input unit 34 is performed to transmit these pieces of information to each telephone, the "communication mode?" Y ”.
In this case, if there is a revocation card list to be transmitted to each telephone and if "recognition of revocation card list?" In step 120 is determined to be "Y", in step 121 the revocation card list to be transmitted to each telephone is revoked. In addition to specifying the card list number , based on the management table in step 122
The revocation specifies the phone to set the card list number, followed by starting the far interval set by sending a revocation card list for each specified phone at step 123 Te. Also, at the time of this remote setting, once the upper limit of this revoked card list
And all the revocation card numbers indicated by the lower limit are transmitted to the telephone and set.

When all the revoked card numbers shown in the revoked card list are transmitted to the respective telephones once, the respective telephones are periodically inquired about the revoked card numbers held by the telephones. to, <br/> each phone side may be sent back only revocation card list number without returning all the revocation card number, thus the transmission time of the phone side can be greatly reduced Rutotomoni, Center 20 By the side
One of shortening this collation time, retrieves the revocation card list of the relevant from registered in the management table of the corresponding phone revocation card list number, possible to easily confirm the revocation card number on the retrieved revocation card list Can be.

FIG. 4A is a flowchart showing the details of the remote setting operation of the revocation card list for each telephone. That is, the control unit 37 controls the line control unit 32,
To capture one of the line of the line group 31 in step 200 so as to form the direct current loop, far in step 201
The telephone number of the telephone to be set
Read and send to the capture line to make a call to the phone,
At this time, a timer for a predetermined time is started. In this case, if the other party's telephone responds and determines "Y" in step 202, in step 204 the revoked card list,
The revoked card list number and the revoked card list number
The upper limit value and the lower limit value of the corresponding revoked card number are transmitted from the line control unit 32 as DTMF signals to the answering telephone. Then, it is determined in step 205 that the transmission has been completed normally. If the transmission has been completed normally, the list of transmission completion is registered in the revocation card list in step 206, and after the DC loop is opened in step 207, the process proceeds to step 208. The printer 35 is driven to print out that the revocation card list transmission has been normally completed. When transmission of the revocation card list to a certain telephone is completed in this way, the next telephone is designated and the corresponding revocation card list is transmitted.

If the time-out of the timer in step 203 becomes "Y" because the telephone is not answered after the call to the telephone, or the transmission of the revoked card list does not end normally, the determination in step 205 is " If "N", the DC loop is released in step 209, and then the printer 35 is driven in step 210 to print out the transmission failure.

Next, FIG. 4B is a flowchart showing the operation of the control unit 25 in the telephone 10 for receiving the revocation card list transmitted from the center device 30. That is, when an incoming call arrives from the center device 30, the relay gs is driven in step 250 to capture the line L and form a DC loop. Thereafter, the DTMF signal indicating the revoked card list transmitted from the center device 30 is sent to step 25.
At 1, the signal is received via the DTMF receiving circuit 14. Then, the received revocation card list is stored in the control unit 25 in step 252.
In the memory not shown in FIG.
At 53, the relay gs is opened to open the DC loop of the line L. Thereafter, when a card is inserted into the telephone, the control unit 25 reads the number of the card ,
Collation is performed based on the upper limit value and the lower limit value of the revoked card number stored in the memory, and it is determined whether or not transmission is possible.

[0023]

As described above, according to the present invention, the upper limit value and the lower limit value of each of a plurality of consecutive revoked cards are set.
Is stored in the storage device of the center device, and this is stored in each public telephone.
Since the data is sent to the talker, the memory capacity of the center unit can be reduced.
Wear. According to the invention described in claim 2,
Upper and lower limits for each number of consecutive revoked cards
Value and the revocation card list number corresponding to both values.
Create a revocation card list that can be managed by each phone.
In addition to registering in the memory in association with the number and calling the public telephone based on the management number and transmitting the corresponding revocation card list , the memory capacity of the center device can be reduced, and in the same device, the management table is stored in the management table. Since the memory search and the transmission of the revoked card number are performed based on this, the memory search and the transmission of the revoked card can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a public telephone constituting a public telephone system according to the present invention.

FIG. 2 is a block diagram of a center device constituting the public telephone system.

FIG. 3 is a flowchart showing an operation of the center device.

FIG. 4 is a flowchart showing a transmitting operation of the center device and a receiving operation of the public telephone.

FIG. 5 is a revoked card list created by the center device.
It is an explanatory view of a preparative及 beauty management table.

[Explanation of symbols]

 Reference Signs List 10 public telephone 11 incoming call detection circuit 15 DTMF reception circuit 20 card unit 23 relay drive circuit 25, 37 control unit 30 center device 31 line group 32 line control unit 34 input unit 35 printer unit 36 storage unit L line gs relay

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norio Suzuki 2-3-2 Shimomeguro, Meguro-ku, Tokyo Inside Tamura Electric Manufacturing Co., Ltd. (72) Inventor Shigeichi Sakata 2-chome Nishishinjuku, Shinjuku-ku, Tokyo No. 2 International Telegraph and Telephone Corporation (72) Inventor Hideyuki Oikawa 2-3-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo International Telegraph and Telephone Corporation (56) References JP-A-6-268778 (JP, A) (58) Fields surveyed (Int. Cl. ⁶ , DB name) H04M 17/00

Claims (3)

(57) [Claims] 1. A public telephone capable of making a telephone call with a card and the number of a revocation card corresponding to the public telephone are recorded.
And a center device to be managed.
Based on the number of the revoked card sent from the device.
Payphone system that blocks calls based on the use of
In the system , the center device is configured to set an upper limit of consecutive revoked card numbers corresponding to each public telephone.
Storage means for storing a value and a lower limit value, and an upper limit value of the revoked card number stored in the storage means
Transmitting means for transmitting the lower limit value and the lower limit value to the public telephone.
Public telephone system characterized by the following. 2. The public telephone system according to claim 1.
At The storage means, The upper and lower limits of the consecutive revoked card numbers, and
Consists of the revoked card list numbers corresponding to these two values
A first storage area for storing a revocation card list; Management information of each public telephone, corresponding to the public telephone
The revoked card list associated with the revoked card number
Store the management table consisting of the revocation card list number
A second storage area, The transmitting means, Refer to the management table stored in the second storage area.
In front of the public telephone specified by the management information.
The revoked card list specified by the revoked card list number
By sending a call to each public telephone
To send the upper and lower limits of the revoked card number
Public telephone system characterized by the following. 3. The method according to claim 1 or 2,
In public telephone systems, The public telephone is The consecutive revocations sent from the center device
Receives and stores the upper and lower limits of the card number, and
To prevent calls based on the use of revocation cards on the basis of
And a public telephone system.