JPS5815363A - Dial number controlling system - Google Patents

Abstract

PURPOSE:To make the setting of the content of control easy, by storaging the specific dial number to the 1st memory in advance and storaging the number also to the 2nd memory before a dial number in response to dialing is transmitted to lines, and discriminating a specific dial number with the content of the 1st and 2nd memory. CONSTITUTION:A specific dial number is stored in a fixed memory ROM in advance and a control section CPU, a variable memory RAM and an input/ output circuit I/O are connected to the ROM. To the circuit I/O, a dial transmission circuit DSC, a push button dial PBD and a coil detection circuit CDT and the like are connected. Before a dial number in response to the operation of te dial PBD is transmitted to a line terminal L, the number is stored in the memory RAM and the specific dial number is discriminated at a control section CPU with the specific dial number stored in the memory ROM in advance and the content of the memory RAM, transmitted from the dial circuit DIC through the conversion into a specific number, allowing to set and operate charging type public telephone sets easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a charging public telephone that allows calls to be made free of charge from a specific dial number, converts it to a special number and then sends it, or disables calls. This is about the dial number control method that controls the controls.

Charge-type public telephones generally allow dialing by inserting coins after going off-hook, but emergency calls to police, fire departments, etc. must be allowed to dial and make calls free of charge. In order to prevent long-distance calls, telephones must be unable to make calls to long-distance numbers or to long-distance relay stations, and the applicant's proposal is to achieve these functions using electronic circuits. "Dial number control circuit" by Ichihara (patent application 152575/1989)
No.) has been disclosed.

However, in the same application, it is necessary to use various logic circuits such as counters and decoders to strap between strap terminals according to specific dial numbers that should be allowed to make free calls or should not be able to make calls. At the same time, the number of digits of a specific dial number that can be handled is limited depending on the configuration at the time of manufacture. the strap between the strap terminals must be changed,
It lacks adaptability and at the same time has the drawbacks of being troublesome to handle.

On the other hand, in certain countries, when a specific dial number is dialed, the dial number is converted to a special number before being sent out in order to connect to a service desk such as an information desk or troubleshooting desk. The need has arisen for the emergence of public telephones that automatically satisfy this demand.

The present invention has the purpose of fundamentally solving the conventional drawbacks and completely satisfying the requirements.Specific dial numbers are stored in advance in the fs1 memory, and the dial numbers corresponding to dial operations are set on the line. The second
After storing it in the memory, it compares the contents of the first memory and the second message, determines which of the specific dial numbers the contents of the second memory correspond to according to the comparison result, and then Therefore, an extremely effective dial number control system is provided in which the content of the second memory is converted into a corresponding dial signal and then sent to the line.

Hereinafter, the present invention will be explained in detail with reference to figures showing embodiments. 1. Figure 1 is a block diagram showing the entire configuration, in which the reed and track terminal are connected to the exchange via the track, and the off-hook hooks the The switch Ell is turned on, and a DC loop is closed between the dial circuit DEC and the telephone call device.

In addition, the dial circuit DIC is provided with a transistor inserted in series with the DC loop circuit, and although it is always on, it can be turned on or off according to the dial signal DP from the dial sending circuit DSC. This sends dial pulses to the line in accordance with the dial number.

In the table, the dial sending circuit DEC receives a selection signal DPICN from the control unit CPU via the input/output circuit I10.

Depending on MFEN, it is determined whether to send a dial pulse or a multi-frequency signal for dialing, and then a number signal KYOυ is sent.
It is designed to send either a dial signal DP for dial pulse exit in accordance with the dial pulse or a multi-frequency dial signal MF, and a multi-frequency dial signal MP is sent to the line via a telephone line device. .

In addition, while a series of dial pulses are being sent by the dial signal DP, the handset control signal RMT is sent, which disconnects the handset circuit in the telephone call device, so that the operator is not affected by pulse noise caused by the dial pulses. It has become a thing.

Among these, when the coin detection circuit CDte detects an inserted coin, it generates a coin detection signal CD8, and when the shift switch H83 is turned on due to off-hook, an off-hook signal FII
II is generated, and both of these functions are applied to the input/output circuit I10. In response to these, the control unit CPυ operates according to the instructions stored in advance in the fixed memory ll0M as the first memory, while accessing the necessary data to the variable memory EMMK as the second memory. , execute a predetermined control operation.

Figures 2 to 4 are flowcharts of control operations by the control unit CPH. Figure 2 shows the main routine, the "dial number verification" step in the figure is shown in Figure 3, and the "dial processing ``The step is as shown in Figure 4.

That is, in FIG. 2, the occurrence of the off-footer signal FHa causes 1 on-hook! ” becomes YEII, the control unit CPU starts operating based on the instructions stored in the fixed memory ROM in advance, sets the initial state by ``initialize'', and then executes ``dial number verification'', `` Judging whether dial control such as "dial processing" has been completed is determined from "Dial control finished!" K, and then performs "1 dial 5 TIN set" via Mushihatsuhiro and NO of this, and then operates the pushbutton dial PIID. In addition, preparations were made to receive the 8 status signals generated in response to the status signal B, and in response to the generation of the status signal B, "1 dial!" ”, the dial number signal DID corresponding to the operation of the pushbutton dial PBD is stored in the predetermined address of the variable memory RAM by -“Dial number/storage 1”, and the status signal is output from “Dial 8〒N reset”K. The receiving of S-cho ends.

Next, it is determined whether the dial flag (described later) is zero or not based on 1 dial plug = 01, and in response to YES, "dial number verification" and "dial processing" are performed, and "end of dial control" is again performed. ! ``After determining YES, it is determined whether or not a billing signal from the Mi station has arrived from the 1-gold signal!'', and when this becomes ygs K, it is input by ``1-gold decoding processing''. After storing the coins while on standby, the machine enters the "talking state".

3, the group counter in the control unit CPU is initialized from "Group counter ← 1" K, and the contents of this are set to "1#, then the specific dial number and the dial number. After "resetting" the "mismatch flag" that is set in response to a mismatch, the fixed memory ROM using a separate address counter is
``Specific dial number storage address counter'' and ``dial number storage address set'' are represented by address specification from the first address that stores the specific dial number of the variable memory RAM and address specification from the first address that stores the dial number of the variable memory RAM. As a result, the contents of each memory IJ ROM and RAM are read out, and "comparison of each digit" is performed in the control unit CPU.

The following table shows an example of the storage status of a specific dial number in a fixed-frame ROM. A digit end code indicated by a hexadecimal 1 is added to each last digit of each number. At the same time, a group end code indicated by hexadecimal numbers Σ and E is inserted at the end of each of the prohibited number group to the local number group on the handling side.

For the sake of kindness, fixed memory 1tOM address "00" ~ 1
03"k and the number 1020 are sequentially compared for each digit, data "FO"K indicates "digit end code! ”
If the detection is YES, the result is 1 mismatch! 1 Y
] If it is C8, the “unmatched flag set” corresponding to the “consistent flag row” on the right side of the figure is performed, and the “non-& flag!”
“YES%”! #A similar comparison operation is performed up to address 08 via the NO of the end code and the NO of the "group counter end!1".

Also, at address “09”, “Group End Code!”
When becomes YI8, the group counter is incremented one step from "1" to "2" using 'Group Counter Increment', but since the count is not yet full, it is incremented via NO of 'Group Counter End i'. Then, compare addresses "0m" to "134" in the same way as above, and if "No mismatch! 1" is not returned between and, then the 1st group end is reached at addresses 113"#1g-125" and 134". --If "DoT" is 7111, use "Group counter increment" to sequentially register the group counter from "1" to 161.

The count is set to full count state by K, and 'Group counter end! ” is set as YES.

“Group counter end is YES, and 1
Dial number is 5 digits or more! ”, if YB2, ′
"Group Flag - Group Counter" sets a group flag according to the count value of the group counter.

However, in the local number (1) in the table above, only the first digit is compared, and the numbers after the second digit are ignored.

In addition, “inconsistency flag i” based on NO of “inconsistency!”
Depending on NO, if any of the comparison results match, ``1-subsection flag reset'' is performed, and ``dial flag ← group counter'' is immediately performed.

In FIG. 4, the group flags set by the "Group Flag - Group Counter" in FIG. Therefore, the determination of “Group Flag ■T# to “Group Flag ■or■↑1” is made accordingly, and the YxB of “Group Flag ■↑” is determined by ■ in the table above.
Since it is a prohibited number, the call will be blocked by ``loop disconnection'' and the Y of ``group flag ■or■'' will be displayed.
Expanded with ES, since it is a toll-free number or a long-distance number in the table above, a 1-code conversion is performed to a code indicating a dialing signal corresponding to the contents of variable memo 9 RAM, and the number signal KY
It is applied as Oυ to the dial sending circuit D8C, and "dial sending" is performed as a dial pulse or a multi-frequency signal.

Also, 'group flag■? If `` is YB2, it is the ■conversion number in the table above, so the control unit cpυ converts 1 data from ``K to a special number such as 001.101, and then performs ``code conversion.'' Then, a special number ``Dial Send 1'' is performed.

On the other hand, if "Group flag ■or■" is YES, it is a paid call for □■ local number in the table above or a time signal, weather forecast, etc. other than the table above, so the coin detection signal CD8 is not activated. Shi! ” after determining the batting power, this Y) Cj
``Code conversion'' and 1-dial transmission'' are performed in response to 1K, while 1-loop disconnection is performed in response to NO?''.

In addition, if ``Group flag ■o, r■'' is ・No, the dial control is not completed, and if the ``Gamma dial control ends!'' following ``Dial processing'' in Figure 2 is NO, return to the beginning. Each process is repeated.

FIG. 5 is a circuit diagram of the dial sending circuit D8C, which is a pulse generator DP using an integrated circuit for generating dial pulses.
G and an oscillator M based on an integrated circuit for generating multi-frequency signals.
The FG is provided with a pulse selection signal DPIN and a multi-frequency selection signal MF determined by the switch 8W in FIG.
When ΣN is applied, switch 8W is activated by pulse signal P8.
When the pulse generator DPG is in the operating state, the switch S is
When W is set as a multi-frequency signal r8, the oscillator MFG becomes operational, and a pulsed dial signal DP or a multi-frequency dial signal MF is sent out in response to the 8-bit number signal KYOU given via the input/output circuit I10. Ru.

In addition, from the pulse generator DPG and oscillator MFG,
Since the status signal is sent out while the dial signal DP1MF is being sent out, these signals are sent out as the handset control signal via the ORG), and are also sent out directly from the oscillator MFG as the sending signal TMT. It has become.

The resistors R1 to Rm and the capacitor CsU are used to determine the pulse width and -r- ratio of the dial pulse, and the space ratio.The crystal piece X is used to determine the reference frequency of the multi-frequency signal. be.

FIG. 6 is a circuit diagram of the dial circuit DEC and the telephone call device, in which DC voltage from the exchange is applied between the circuits Ll and L connected to the one-way terminal via the hook switch 1H8t. In order to maintain a constant polarity regardless of the applied polarity, a diode bridge DB is inserted, and the common circuit side is made negative.

Between the positive terminal of the diode bridge DI and the common circuit,
Relay contact that operates in conjunction with hook switch 88K, Ha, g11 Transistor Q for dial circuit DIC
A circuit network TKN using an integrated circuit for a communication circuit via i-Qs % and a resistor R port to a transistor Q4 for amplifying RISs, and a constant voltage diode ZD, , diodes D1 to Ds1 for the power supply circuit.
~CtS is inserted, and when the DC loop is closed by the operation of the contact gs, the dial signal DP is always at a high level, so the transistor Qs is turned on, and the transistors Q3 and Ql are turned on. It is turned on by applying forward bias.

On the other hand, when the dial signal becomes low level in a pulsed manner, the transistor Qs is turned off, so the transistors Qm and Qt4 are turned off, and by repeating this, a dial pulse corresponding to the dial signal DP is sent to the line. be done.

Note that the continuous low level of the dial signal DP causes the DC loop to be disconnected.

The power supply circuit uses the Zener voltage of the constant voltage diode zD1 generated by the loop current, and connects the capacitor C1l""C1 via the reverse current blocking diodes D, D4, and Ds.
m is charged individually, and the voltage at these terminals is supplied as the power supply TIE, VMG, VDD, etc. for each part, but since the capacitors CIl to C1m have large capacities, they must be charged even when not talking. Therefore, diodes DI, D: are provided along with a resistor R1 and a constant voltage diode ZD for limiting the gas current at the contact point.

In addition, as the circuit network TKN, TEA-1045 type (I
A capacitor C14 integrated circuit (manufactured by TT) is used.
A field effect transistor Q1%q- is inserted into the common circuit side of the receiver R, and when the receiver control signal RMT, which is always at a high level, becomes a low level, the transistors, etc. Since the Q. is turned off, the transmission of the initial tone, etc. to the receiver RK is prevented.

The voice signal from the transmitter T, sidetone attenuated by the amplifier circuit in the network TKN, is applied to the receiver R, while the resistors R1j, l1l- and the diode D are in a proper state. It is amplified by the transistor Q4 and sent to the line, but the received voice signal is given through the circuit of the resistors RII and R and the capacitor CI. Resistor R11
, resistor R11, ! E
In addition to the capacitor C1K and the capacitor C1K, the amount of sound attenuation is set.

Note that the circuit network TKN Ka and the oscillator yiF in FIG.
When the multi-frequency dial signal MF from G and the sending signal MT indicating that it is being sent are given, switching within the circuit network TKN is performed in accordance with the sending signal MT, and the dial signal is MF is sent to the line via transistor Q4.

special numbers such as toll-free numbers, prohibited numbers, etc.
It can be arbitrarily determined according to the type and number of digits handled, and it is only necessary to prepare the address of the fixed memory ROM and determine the full count number of one group counter according to this, free calls, "loop disconnection" Controls such as the above may be determined depending on the content of handling, and various modifications can be made.

In addition, if the fixed memory ROM is made removable by attaching it to a socket, etc., the specific dial number and the corresponding control contents can be set arbitrarily by replacing it.
The adaptability to the area where the public telephone is installed is increased, and setting of specific dial numbers and control contents becomes extremely easy.

As is clear from the above explanation, according to the present invention, the dial number corresponding to the operation is accurately compared with the specific dial number including prohibited and toll-free numbers, and control based on this is reliably performed. This makes it possible to convert the number converted to % to another special dial number and send it out, and it also makes it easy to set the specific dial number and control details, increasing the versatility of charge-type public telephones and the ease of setting operations. This has been greatly improved, and remarkable effects can be obtained in charge-type public telephones for various purposes.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Figure 1 is a block diagram of the entire configuration, Figures 2 to 4 are flowcharts showing the control operation of the control section, Figure 5 is a circuit diagram of the dial sending 2 circuit, FIG. 6 is a circuit diagram of the dial circuit and the telephone call circuit. CPU-ψ conflict/control unit, ROM...Fixed memory (1
1 memory), RAM... cute memory (cocoon 2 memory)
, 110...Input/output circuit, PIID...Push button dial, D8C...Dial sending circuit, DIC...
...Dial circuit, TlCl, -Φ/contest call circuit. Patent Applicant: Tamura Electric Manufacturing Co., Ltd. Agent Kazuka Yamakawa (1 person) Figure 1 Procedural Amendment (n1 Showa Year, Month, Day, Japan Patent Office Commissioner, September 28, 1956)
1. Indication of the case 1982 Patent Application No. 113647 2. Name of the invention Dial number control system 3. Person making the amendment Relationship with the case Patent Applicant name (name)
(363) Tamura Electric Manufacturing Co., Ltd. + 3 + 1 Increasing number of inventions - 6. Contents of amendment ill Page 6 of the specification, lines 13, 14, and 1
Correct the "status signal" in line 9 to "strobe signal". (2) "Dial flag" in the first and second lines of page 7 of the same book is corrected to "group flag." (3) The table on page 9 of the same book has been amended as follows. (4) Figure 6 has been corrected to the attached red inscription. that's all

Claims (1)

[Claims] The first one stores a predetermined specific dial number.
A memory, a second memory that stores a dial number corresponding to a dial operation before being sent out to the railway, and a second memory that compares the contents of the second memory with the contents of the first memory and performs control according to the comparison result. a dial sending circuit that converts the content of the second memory into a dial signal corresponding to the wrinkle content according to the control of the control unit, and a circuit that sends the dial signal to the line. Features dial number control method.