JPS5817762A - Dial number control system - Google Patents

Abstract

PURPOSE:To suitably control a public telephone set, by comparing a dial number transmitted with a dial operation with a free of charge number stored in a memory in advance, and making the call possible when they are coincident. CONSTITUTION:A CPU starts operation based on the instruction stored in an ROM in advance through the generation of an off-hooke signal FHS. The CPU makes dial control after the initial state is set and compares the dial number inputted to an RAM with the content of the ROM. If they are coincident, the CPU control the call to be free-of chage call and if not coincident, a charged call.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows free outgoing calls and calls to specific 〇-dial numbers in charge-type public telephones.
This relates to the dial number for controlling the system.

Charging public telephones generally allow T-dial calls by inserting a coin after the off-footer, but emergency calls to the police and fire department are free of charge. ), this function can be implemented electronically by pIK.
As example 40, "Dial number control enclosure" (patent application @5l-II2j$75) filed separately by the same applicant is listed.

However, in the same application, various logic circuits such as hiro, counters, depuders, etc. were used to allow free outgoing calls, and straps were installed between the strap terminals according to the 11 specific mail order. Due to the configuration at the time of manufacture,
) Can be handled! The fixed number of dial numbers is limited to 10, so it's either rounded off or you can use any number of numbers to correspond to a specific dial number, or you have to change the strap between the strap terminals according to the installation area. Russ, adaptation 1! k
At the same time as the K missing Ik2 Sui, the original @Hiro has an I purpose that fundamentally solves the shortcomings of the conventional one, and the dial number that is sent out by dial operation, seven or four times, and a message. store,
This method provides a highly flexible and highly effective control method for congregation telephones. , So, there it is.

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Fig. 1 is a block diagram showing the entire configuration when the present invention is applied to a dial pulse type.The p1 line terminal is connected to the exchange via the line! ! ffi, the hook switch H8K is turned on due to off-hook, and the redial circuit DIC
A DC loop is closed by the communication circuit TICLK.

The dial circuit DIC includes a series switching element such as a transistor or a relay inserted in series with the DC loop circuit, and a parallel switching element such as a transistor or relay inserted in parallel with the telephone call circuit TICL. The series switching element is always on and the parallel switching element is off, but in response to dial operation, the pulse signal D is output from the dial control 41-path DCT.
When r and shunt signal DB are sent out, the series switching element is turned on and off according to pulse signal DP, thereby sending out nine dial pulses O according to the dial number, and also sending out a series of O pulse signals Dr.
During this period, the shunt signal DaK, which is continuously sent out, turns on the parallel switching element to prevent the pulse noise generated by the sending of the dial pulse O from being applied to the telephone line. It has become.

The dial control circuit OCT is activated in response to the dial permission signal DIENK given by the microphone control unit CPυ via the input/output circuit I10, and in response to the operation of the pushbutton dial deside DO. It sends out a pulse signal DP which is converted into e** by a number of pulses, and provides it to the dial circuit DIC, while also providing it to the control unit CPUK via the input/output circuit X10.

Is this a coin detection signal CD? If it detects an inserted coin, it generates a coin detection signal CIIHI, and when the off-hook switch 1181 turns on, it generates an off-hook signal FH1i, both of which are sent to the input/output circuit I10. ), In response to this 6tc, the control part cpυ operates according to the command stored in advance in the Oll fixed memory ROM as $111 memory, and the 4 essential data for variable memory 8m KK as the second memory is operated. Execute a predetermined control operation while accessing the CPUK. Figures 2 and 3 are 70-charts of control operations for the control unit CPUK. Figure 2 shows the main routine; The "dial control" step shown in the figure is as shown in Figure 3. In other words, in the jlIR diagram, if the off-hook signal "1 on footer!" becomes YEa due to the generation of I'HB, then the fixed dial is set in advance. Kari RO
The control unit cpυ starts operating based on the command stored in M, sets the initial state by "initialize", and then performs one-dial control via NO of the @rope signal!
line, 'dial control/end? As a result of ``1 dial control'', the dial number corresponding to the dial operation is 1 toll-free number! ” YICI,
1 call letter M''', but when there are N number of 1 toll-free numbers!, K determines that there are coins based on the coin detection signal CDII K, and the station side sends the OII Due to the arrival of the gold signal, ``billing signal!''oyicsi
1 call state.

However, there is 1 coin! If "No," one loop is disconnected by opening the DC loop to block the call, and each part is reset by post-processing (1).

In the 311I, 'Dial control/end! “N”
In addition, a series of pulse signals DP are sent out via O in response to the operation of the pushbutton dial PID, and @pulse signal ON? indicating the first dial pulse. ” becomes 711, @DP 7 lag dragon tsu 0 is done as a memorization of this, and by this, generally 66■-...O mater period and 33
In order to monitor the time for one pulse on the m-...O space period, 12 Glas installed in the control unit CPtF.
When the @timer start 1 of @- is performed, one part of the dial number corresponding to the number of pulse signals DPO pulses is stored in one dial circuit number and each digit is stored in the ROMK that uses the variable method. 〉Stored.

While the pulses of the pulse signal Dr are continuous, the next 4 pulses can be seen before the time-up of the main pulse occurs.
Timer end! The above operation is repeated via NO of ``, and when a series of pulse signals is completed, ``pulse signal O
N? “NOl and @DP7 lag reset” and 9 timer end! ” through the YBs, the control unit CP
The 1-digit number counter in U is incremented, and this is registered in the ! step, and according to this count value, it becomes YEli of 1 1st digit!, and 1 dial number 1
! ``If the judgment result is YF3, the same operation is repeated for the second and third digits of the pulse signal DP via No of 1 dial control/end!'' in the iris 2 diagram.

For this reason, '1st digit! ygs for “and @2nd digit!”
1 dial number 1 via! If ``is Ylg, then 1 second digit ↑'' is NO, then 1 dial number Qor9? ” is Y
When IaK is reached, the dialing permission signal DIIN disappears due to ``dial not allowed'', the dialing operation on the 4th digit board row is invalidated, and the 1 toll-free number 72 daset corresponding to ``toll-free number!0'' in Figure 2 is disabled. has been completed, and one dial control is complete! ``1 dial control end flutter'' corresponding to ``1 dial control end flutter'' is performed.

Therefore, outgoing calls and telephone calls using the 1, 1, or 11 ID dial number butterfly number group are allowed.

Also, is the 1 pulse signal ON? ″″0NOK is @DP
7-way reset” was done, while 1 dial number 1!
By ``0NOK, 1 clear stored contents'', the variable number is stored in the RAM and the 9-dial number is erased.

Is the dial control circuit DC in Figure 4? □ - In the circuit diagram, a mourning pulse generator DPG is provided as an integrated circuit, to which row outputs R1 to R4 and column outputs C1 to Cm corresponding to each button of the pushbutton dial PIIDO are provided. In response to the dial permission signal DIENK, the pulse generator DPG enters the operating state, and in response to the operation of the push button dial P to Do, the pulse generator DPG outputs a round number of pulses to the pulse signal D? , and at the same time, one status signal is generated while sending a series of pulses, which is connected to resistor 8 to Rta and capacitor C via contact drs of 2-chi/Grillet-DB using a permanent magnet. and inverter I.
Resistor cap 4-%R1 via N jlP and contact dr2
The rising edge of the status signal BT turns on the spot field effect type transistor Q1, and the falling edge of the status signal BT turns on the similar transistor Q3.

Therefore, while the latching relay DI is activated by the rising edge of the status signal 8T, it is restored by the falling edge of the signal 8T, and its contact drs is the parallel switching of the dial circuit DIC. used as an element.

The Wks diagram is a block diagram showing the entire configuration when the present invention is applied to a multi-frequency signal type.It is similar to "i" in Figure 1, but the dial information DI from the push button dial PBD is The signal is supplied to the dial control circuit OCT as well as to the control unit CPU via the input/output circuit I10, and the dial control circuit DC'l' sends out the multi-frequency signal M? in place of the pulse signal DP. It has become something to do.

Furthermore, regarding the control operation of the control unit CPU, the main routine is the same as that shown in Fig. 2, but the 6 "dial control" steps are slightly different, as shown in Fig. 6.

That is, in the 6th stripe diagram, 'Dial control/end!
If the dial information becomes “DI human power” through the “NO”,
Dial information @DI input! ``Next, convert the dial information @DI to a dial number,'' and then store the dial number digit by digit in the variable memory RAM.

Then, as in Figure 3, the counter increments by one digit, and in response, ``1st digit!''.

-Second digit! "and, 'Dial number 1!', 'Dial number 0 rat' is determined, then 1 dial control ends 7 sets", 1, dialing not permitted 1.
1 toll-free number flag set ``cape'' is performed. Therefore, in this case, like %菖5aa7., the dialed number IILllml allows toll-free 2 outgoing calls and calls, and dialing after the 4th digit is disabled. becomes.

FIG. 7 is a circuit diagram of the dial control circuit DCT in FIG. MFG is installed, "God button dial"
According to the row outputs R1 to R4 and column outputs C1 to C3 of "b", a multi-frequency signal MP is generated by dividing the reference frequency determined by the crystal j! When the power supply ゛+v is applied through the Q-th field effect transistor that turns on, it becomes active.''
6, multiple IMtlL signals MP are sent out. - Multi-frequency signal MF Fi via resistor R11, transformer T1
Transistor Qllll, Qll, - 0 to diode D
1. From the resistors Rms to R24, the varistor VR, and the capacitor Cal, the loop current is applied to the amplifier of the dial 1 Ayu DIC, and after being amplified by this, it is passed through the latching relay DRC) contact drl. m- is sent to '.

In addition, the latching relay DB is driven by the 8 oscillating IsMFGO status signals.
A waveform shaping circuit consisting of a resistor [■~R*I, :yinde7tCss and an inverter IN4dh is provided, and as in Fig. 4, a latching relay is connected from the rising edge of the status signal 8T to DK. DB is activated, and the relay DB is put into the recovery state by the fall of the signal BT. Switching.

Note that the resistor R3 is for supplying a multi-frequency signal MP for monitoring to the device once in a row.

9 degrees, the configuration of Figures 4 and 17 can be arbitrarily selected depending on the situation, and the flowcharts of Figures 3 and 6 can also be modified according to the situation. .

In other words, a specific dial number that is treated as a toll-free number can be arbitrarily determined according to the type of toll-free number and the number of digits. It is sufficient to determine the full count number of , and controls such as free calls, ``loop cut'', etc. may also be determined according to the contents of *a, and various modifications are possible.

In addition, if the fixed ROM is made removable by attaching it to a socket, etc., it can be replaced and set as desired, allowing adaptation to the area where the public telephone is installed.
As the number increases, one specific dial number request is generated within the control.

The setup is extremely kbt.

As is clear from the above explanation, according to the present invention, the degree of coincidence between the dialed number sent and the specific dialed number treated as toll-free is achieved accurately, and control based on this is reliably carried out. , the control operation is relatively simple and ibn
, an inexpensive processor with about 4 bits can be used as the control unit CPU, and the rounding system makes it easy to set specific dial numbers and control details, greatly increasing the versatility and ease of setting operations of Ajikin public telephones. Since emergency calls can be made without special operations, the cII effect can be achieved in charge-type public tenders for various purposes.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a block diagram of the entire configuration, Figs. 2 and 3 are flow charts showing the operation of the control section, and Fig. 4 shows the dial percentage. San 1j
Fig. 5 is a block diagram of the entire configuration showing another embodiment; Fig. 6 is a flowchart showing the control operation of the control section corresponding to Fig. 1; No. 10...variable menu, Ilo...', input, RAM circuit, TIL...telephone circuit. Patent request not granted by Tamura Electric Co., Ltd. Masaki Yamakawa (width h14) Figure 4 Figure 5

Claims (1)

[Claims] The first one stores a predetermined specific dial number.
a memory, a second memory for storing a dialed number in response to a dialing operation, and a second memory that sequentially compares the contents of the tlNIL2 message with the contents of the first message and makes a free call based on the result of the comparison. A dial number control method characterized by a control unit that performs control. ,.