JPS6132860B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The applicant previously proposed a method and apparatus for displaying dial information in Japanese Patent Application No. 52435/1983.
However, under the multi-paragraph system in Japan, it is not possible to accomplish everything stated in the specification in one application, so the present application will be filed separately.

In other words, in the present application, the following is divided into the following on page 29, line 17 of the specification of the original invention: ``In addition, when this application refers to a telephone handset,'' the first purpose of the invention is Using the means presented in the method and device for displaying dialing information in , it is possible to display both the dialing information of the caller who receives a ringing signal when the telephone is on-hook and the dialing information of the caller that comes in after the telephone is on-hook, and the dialed number of the person to be called when the telephone is off-hook. The goal is to display both on the same display device.

The second object of the present invention is to display the two types of information mentioned above, even if the information speed of each and the minimum pause time between digits of each dial number are significantly different, it is possible to display the two types of information on the telephone. The purpose of the present invention is to enable the use of the common display device by switching to a detection means that can correspond to each of the detection means by a switching means that is switched in conjunction with off-hook.

The structural functions of the embodiments of the present invention will be explained below.
Since its main parts are the same as the original invention, it will be described almost as is, and then the features of the present application to be divided will be explained in detail.

First, prior art that is partially similar to the present invention will be described. Methods A, B, and C in FIG. 1 are methods used for automatic caller search that have been known in the past. That is, Figure A shows a method of searching for connections within the local station. In other words, SUB-1 is set as the searching subscriber, and
SUB-1 is NG, that is, jumper is set to the searched subscriber plug of the number group, and SUB-1
When an incoming call is received, the NG senses this during the incoming process, sends the information to the CM, the CM captures the TRR, and prints the SUB-1's subscriber accommodation location information. In the diagram, TRR indicates trouble recorder, and all other symbols are C-
The symbols are the same as those used for the 400 exchanger and are already well known, so they are omitted here.

Next, Figure B shows the case of automatic search for incoming calls from other stations in the link-by-link system. That is, the AU is an additional unit for the subscriber to be searched, and the DSK is a search base. In this case, the AU must accumulate ICT accommodation location information during the connection process, and when a malicious call is received, the SUB will hook, and when the AU is connected to the DSK, an alert will be issued. This notification is sent to the caller, but since this checking also allows the caller to know at the same time, it is not a very effective method of use. Anyway, when the operator moves the key, the ICT storage location and SUB code number are displayed on the DSK with a lamp. In addition, the train should be set to the last party release and the recovery will be done.
This means that it must be kept under the control of DSK. If you can find your ICT number there,
Since the opposing OGT is known, the operator can request the other station to search using a separate circuit. At that time, the partner station uses the detection device ID to detect the location where the caller is accommodated. Next, Figure C shows the case where the system is changed to the end-to-end system, in which the searching subscriber SUB-1 is jumpered to the searching subscriber class in advance, and incoming calls from other stations to SUB-1 are In the event that a search occurs, the CM sends a backward signal to the A station based on the search subscriber class information obtained from the NG. The A station detects the subscriber number using this backward signal and transfers it to the D station. Station D uses TRR to detect the sent station number and subscriber number.

In each of the above methods, if you try to search including incoming calls from other stations, you will have to at least change the train recovery to the last party release method or the connection recovery to the end-to-end method. There is. Moreover, since the perforated item is unconditionally perforated, it is also difficult to search for a specific malicious call among them. In any case, the above-mentioned method is information that is limited to the search station or the telephone office of the called party, and is not what the present application expects. That is, the purpose of the present invention, as stated in the scope of the above-mentioned Japanese Patent Application No. 49423/1983, is to make a decision on whether or not to answer an incoming call while an incoming call is arriving. In order to do
The purpose is for the caller to confirm this via the numeric display. Therefore, although the above-mentioned method of automatically searching for a caller cannot be used as is, it is possible to use the information transfer means in the process. That is, step-by-step
In the step method, the called party's dialed number sent by the calling party is transferred from the first selector to the next selector one after another until the called party's telephone station is known. By using the same communication path, the dialing information of the called party is sent out at the same time as the dialing information of the called party sent out by the calling party or with a time difference. Of course, during this time the train must be held until the end rather than being cut at each step. In a common control exchange, an outgoing sender of the originating station's exchange sends the called party's number to the terminating station's or relay station's exchange, thereby connecting the number to the called party of the terminal. In this case, in order to add the function of transmitting the calling party's number to the above-mentioned sender, it is necessary to install digit number incrementing circuits separately for calling and called, or to share them in a time-sharing manner. It becomes necessary. The calling party's dial information sent to the called party's telephone office in this way is temporarily stored in a buffer register, etc. It will be sent to the calling party's telephone. In this case, in the above-mentioned patent application, since the manual ring signal system was used, the operator could manually operate the telephone key for the ring signal, so the ring signal was sent first and then It was also possible to send the caller dialing information and then send the next ringing signal after this was completed. Also, in manual switchboards, those equipped with a relay stand, or in shared power switchboards, a keyless signaling system is already used for the connecting cord circuit, and the ringing signal current is automatically sent out to the called party. Since the system is such that it can be stopped immediately if the caller answers, the interval between the ringing signals can be increased, or the signal current can be automatically turned off while the dialing information of the caller is being sent. A method must be taken to stop it. However, since this is to be done at the called party's telephone office, any of the above cases can be applied to the present application. However, in order to send the calling signal and calling party dialing information from the called party's telephone office to the called party using only two wires, it is necessary to make a call while the sending of the calling signal is stopped. S/
It is also desirable for improving the N ratio. This rapid means that in Japan, a bell rings for one second and then there is a two-second break, so for example, 10-digit dialing information is sent within those two seconds. However, it takes at least 10 seconds to send 10 digits using a normal dial, including the minimum pause, and if you take this into account, it is at least 10 times faster than the normal dial pulse. I will have to send it. Therefore, for this purpose, the aforementioned patent application was filed in 1973.
49423, it is impossible to send information by tape, etc., and in order to do so, the information stored in a magnetic core etc. must be read out and sent to the telephone office of the called party using a digit number increment circuit etc. The calling party's dialing information, which has been transferred and once stored in a buffer register or the like, is rapidly and automatically transmitted between the calling signals according to the service class of the called subscriber to achieve this purpose. It is set as.

The above is an overview of the system and means on the exchange side, but in this application, as stated at the beginning, the main gist of the invention is the device on the called party's telephone side and its specific means. I will discuss this in detail.

That is, FIG. 2 is a detailed drawing of one embodiment of the display device for the calling party dial information on the called party's telephone side. In the figure, Q3 indicates a transistor,
C1, C2, etc. are capacitors, R1, R2, etc. are resistors, and D1, D2, etc. are diodes. Also L
1, L2 indicates a telephone line, TEL indicates a called party's telephone, LT indicates a line transformer, and NL indicates a neon lamp. Next, IC-1 and IC-70 are mono multi-circuits, and TTL 7412 is used in the example, but this input terminal B is triggered when the power goes from L level to H level. It is known that a single pulse is output. IC-2 to IC-5 are 8-bit shift registers with serial input and parallel output, such as SN74164. I C
-6, IC-7 is a clock pulse generation circuit using two inverters. Also IC-9 ~ IC-20
is a 2-input NAND circuit, and IC-21 to IC-
32 is a decimal counter, which counts the dial number of each digit of dial information to be described later; in this embodiment, SN-7490 is used. I C
-65 is the same. Also, IC-33 to IC-44 are
BCD - 7 segment decoder, using the output of the above decimal counter as input, DT1 to DT1
2. Operate the light emitting diode numeric display. These shift registers IC-2 to IC-5, NAND
Circuit IC-9 to IC-20, Decimal counter IC-21
~IC-32, decoders IC-33~IC-44, light emitting diode numeric displays DT1~DT12, etc. constitute dial information display means. Additionally, as is clear from the drawings, a large number of NAND gates, inverter gates, etc. are connected.

Next, we will discuss its effect. Start with the phone line
When 16Hz (Japanese calling signal) comes in, the neon lamp NL (or light emitting diode) lights up, and the resistance value of the CDS that receives it decreases. Therefore, when the power is turned on, the +B voltage is applied to the input terminal of the C-MOS IC-53 as shown in the figure, and what was at H level becomes L level as the resistance of CDS decreases. Therefore, the output becomes H level, which is smoothed by resistors R9 and C3, and further by C-MOS.
The output of IC-54 becomes L level and the output of IC-55 becomes H level. IC-1 is mono-multi as mentioned above, and input terminal B is IC-55 when the power is turned on.
Although the output of IC-55 was still at L level, as mentioned above, when the output of IC-55 becomes H level, it is triggered and only one pulse is generated from the output terminal.
This one-shot pulse is generated by the capacitor C11, for example.
In the case of 10 micro F, a negative pulse with a width of about 1 millisecond will be generated. This is used as a clear pulse on the display device side. In other words, this clear pulse is at the L level, so this is the IC.
It enters the reset input terminal R of the RS flip-flop circuit consisting of -47 and IC-48 and is reset once. Therefore, the Q of the output terminal becomes L level, and a part of the output outputs IC-2 to IC.
-Clear the shift register of 4 and IC again-
The output of 49 becomes H level and from IC-21 to IC-
Clears the 32 decimal counter and clears everything that was previously displayed on the display. Naokonosai IC-49 to IC-50, IC
-51, the B terminal of IC-2 is set to H level. This will be discussed later. As mentioned above, while the doorbell is ringing, the output of IC-53 is H and the output of IC-54 is L, so the IC
-56's input becomes L and its output becomes H, which is delayed a little by R7 and C10 and becomes IC-5.
Since H is added to the input of the flip-flop circuit 7 and its output becomes L, this is applied to the set terminal S of the flip-flop circuit IC-47, and the flip-flop is now set. Therefore, an H level pulse is output from the Q output terminal. That is, R-
The S flip flop circuit first resets during the first ringing of the doorbell and then immediately enters the set state, and displays the dial information described below that comes in after the first ringing on the DT-1 and below. You will have to prepare for it. That is, when the output Q of the R-S flip-flop circuit becomes H level, the IC-49
The output becomes L, and after about 0.5ms (seconds) IC-5
0 input is also L, IC-50 output is H, IC-51
The output becomes L, and the B terminal of IC-2 is pulled down from the aforementioned H to L. (More on this later)
Also, since the output of IC-49 becomes L, the R terminals of the decoders from IC-21 to IC-32 change from the aforementioned H to L, and the counting mode is entered. Also, as mentioned above, since the input of IC-49 is at H level, the clear terminals of IC-2 to IC-5 become H level, and the shift registers of IC-2 to IC-5 are in the clear state. is released and becomes operational. Also, as mentioned above, when the doorbell starts ringing, a single negative pulse is generated from the mono multi terminal of IC-1, which causes input terminal 2 of the 2-input NOR circuit IC-52 to go to L level. No matter what the input terminal 1 is, the output side is set to H level, and this is applied to the A terminal of IC-2 and the AB terminal of IC-4. Therefore, within 0.5ms (seconds), IC-2 is
From then on, all the clock terminals of IC-5 become H level. Furthermore, the IC-4 of the R-S Philips flop
Within about 0.5 ms (seconds) from the time when the output Q of IC-2 becomes H level as described above, the B terminal of IC-2 remains at H level. This is because, due to the delay circuit of R20 and C8, the output of IC-51 becomes L level only after the time constant constituted by the delay circuit, that is, approximately 0.5 ms (seconds) has passed. Therefore, within the above 0.5ms (seconds) IC-2 ~
When the clock terminal of IC-5 becomes H level as mentioned above, the H level of terminals A and B is input to the shift register, and the QA of the first bit (IC-2 and IC-2) is input to the shift register.
4) becomes H. In other words, this is where the first shift takes place. Here, we will explain that the input conditions for IC-2 and IC-4 are as shown in the figure. That is, as will be described later, due to the single pulse of the monomulti IC-70 generated for each minimum pause in the dial information, the output of IC-2 and IC-3 becomes H by one bit each time the pulse is shifted. That is, in IC-2, only one part of the outputs QA to QH becomes H at a time, and for example, when QB becomes L
When this happens, QC becomes H and is held. but
In the shift registers of IC-4 and IC-5, there is an input to the AB terminal for each clock, so
Specifically, as will be described later, the number of bits that become H increases with each clock. i.e. IC-4, IC-5
, the output becomes H while repeating one bit at a time. Therefore, as mentioned above, with IC-2
When the first bit QA of IC-4 becomes H level, the IC
-4's QA turns on the light emitting diode LED via IC-52 and displays READY.
This is an indication that dial information has been accepted, that is, preparation for count display is OK. The above is the operation while the level is ringing.

Next, when the first bell finished ringing, the IC-59
The output of the input terminal 2 of the NAND gate, that is, the IC-55, is H while the bell is ringing, but becomes L when the bell is stopped, and the output becomes H regardless of the input terminal 1. Therefore, the output of IC-60 is L, so the decimal counter IC-65
(7490) counts 1 when its input terminal changes from H to L. Note that the R terminal of this 7490 had been reset and cleared when it went to H level after the power was turned on, but it was set when the output of IC-57 became L while the bell was ringing. Therefore, the A terminal changes from L to H. Therefore, input terminal 1 of the NAND gate of IC-62 becomes H level, input terminal 2 becomes H level because the output of IC-54 becomes H again when the bell stops, and input terminal 3 becomes H level according to the dial information described later. It becomes L or H. That is, when dial information output, which will be described later, is output from the illustrated terminal at H level, all inputs to the IC-62 are at H level, so its output is at L level. Therefore, as will be described later, the output of the C-MOS IC-67 becomes H. Because at this time C-MOS
The input terminal of IC-66 is connected to R20 when the power is turned on.
Since it is grounded at the terminal, it is at L level, and as will be explained later, when the handset is lifted or put back down, its input is L, so its output is H, and therefore IC-6.
This is because input terminal 1 of 7 is always at H, so if input terminal 2 is at L, its output will be at H. In addition
The IC-67 is a NOR circuit like the IC-52, so when expressing it with negative logic, if its input terminal 1 is H and its input terminal 2 is H, its output will be L. Not even.

Next, a case will be described in which dial information as shown in FIG. 3 is received. That is, when the caller's dialing information first comes in in the form 421-2266, the first 4 is represented by the first pulse train in FIG. This is line transformer LT, IC-63,
The information is input to a caller dial information receiving means consisting of a Schmitt circuit consisting of an IC-64, an information detection circuit IRC, and the like. That is, the above pulse train enters the secondary side of line transformer LT, and IC-63, IC-6
The waveform is shaped by the Schmitt circuit consisting of 4, is input to the information detection circuit IRC, and is output as an H or L level pulse from the information output terminal at the bottom of the figure.
62 input terminal 3. So, as mentioned above, if this is H now, input terminals 1, 2, and 3 are all H and their output becomes L, and the C-MOS IC-
The output of 67 becomes H, and the capacitors C12 and C
13, Inverter IC-68, Mono-multi IC-7
0, etc., and when on-hook, the contact f1-3 of the switching means for switching the time constant is grounded to the capacitor C13 as shown in the figure.
Charging started on the 13th, and soon the C-MOS IC
-68's input becomes H and its output becomes L.
Therefore, since the input terminal B of the monomulti IC-70 is at L level, it is not triggered and the above-mentioned shift effect is not performed. When the output of IC-67 is H, the IC
- Since the output of 69 is L level, this is the IC.
-9 to common gate input terminal 1 of IC-20. However, at this time, the NAND gate input terminal 2 from IC-9 is already connected to IC-2 as mentioned above.
Since it is set to H level by QA, the above-mentioned intermittent dial information signal, for example, four L and H pulses, will appear four times in the output of IC-9 as H or L level, and the decimal counter will IC-2
1 counts every time the input changes from H to L, and counts up to 4. This is the decoder IC-
4 is displayed on the light emitting diode display DT1 via 33. That is, when H appears at the dial information output terminal, the input to IC-21 is also H, and when the former becomes L, 1 is counted, and when this is repeated 4 times, count 4 is displayed. In this case, the H or L level is repeatedly applied to the input terminal 2 of the IC-67, but since C13 is charged as described above, its charge is maintained by the diode D8. Even if the output of IC-67 goes to L level, C13 is discharged during the period of the dial pulse, that is, while 4 pulses are output, so the output of C-MOS IC-68 remains low. becomes L, and no single pulse is output from the monomulti IC-70.

Now, as described above, when the first digit dial pulse, ie, 4, is displayed, the dial information corresponds to the minimum pause. At this time, the signal level is almost 0 volts, but in this embodiment, the minimum pause interval is determined to be about 30 m, s, and the capacitance of capacitor C13, which constitutes the minimum pause detection means, is set in time for this. has been determined. Therefore, as is clear from the above, if the charging of capacitor C13 stops during this period, its charge will be transferred to IC-6.
Since the input of IC-68 becomes L and the output becomes H within about 30 m and s, the monomulti IC-70 that constitutes the minimum pause detection means is triggered, and a negative voltage is output from its output terminal. A pulse is emitted
L is applied to input terminal 1 of IC-52. Therefore, no matter what the input terminal 2 is, its output becomes H, and the A and AB terminals of IC-2 to IC-4 become H, just as before, and during this time a clock pulse is output and the shift register is shifted by one bit again. Yes. Therefore, as mentioned above, when the first doorbell was ringing, a single negative pulse from the terminal of IC-1 caused the A terminal of IC-2 to go to H level, and the terminal QA to go to H level. , this time, when shifted by one bit, QA becomes L and QB becomes H. However, as already mentioned, for IC-4, QA is also H and QB is also H. Therefore, the output of QB of this IC-4 pulls the ripple blanking input terminal RBI of the decoder IC-33 for displaying the first digit of dial information to the H level. In addition
If RBI is set to L level, IC-33 has the property of not being displayed. However, in the dial information, 0 is just 10, and to eliminate this confusion, the decoder's zero suppression is used to completely turn off the light emitting diode display, which would normally display 0.
This is done by pulling the RBI terminal down to L level. Therefore, if the number you just dialed is "0", the corresponding number from IC-21 to IC-32 will be dialed.
Even if the decimal counter counts "10", its output is equal to "0". Therefore, in the case of the "0" dial, the display is made only when the above-mentioned RBI terminal is raised to the H level. As is clear from the above, the point at which this RBI terminal is raised to the H level is when the first digit dial information arrives and when the shift registers of IC-4 and IC-5 shift in the minimum pause that follows. It is done. That is, when the dial number is "0", the display on the light emitting diode display becomes the minimum pose and a single pulse is emitted from the monomulti, IC-70, and the IC-52
This happens after the output of 1 becomes H level and a clock pulse is output after that, and during this time the tempo will be delayed by one tempo compared to the other numbers. However, overall, there is no error in the display of 0 or other numbers.

By inputting the dial information one after another as described above, the information is sequentially displayed to the right on the light emitting diode display starting from the largest digit. In this embodiment, two 8-bit shift registers are connected in series, so dial information of up to 15 digits can be displayed.

After the last digit has been displayed in this way, a signal indicating whether it is correct or incorrect is sent from the telephone office. Originally, this correct/incorrect check is performed by representing the 7-bit information as a 6-bit number, and using the 7th bit as a parity check signal, but in this embodiment, the calling party The information is stored in the buffer register of the called party's telephone office before being sent out, so if there is an error in the information transmission during this time, a parity check between the telephone offices will be carried out. It is possible that correct information is introduced and stored in a buffer register or the like. Therefore, when the called party's telephone office sends information to the called party, whether it is incorrect or correct can be detected by a signal at the time the information is sent. It is also practical to do so. Therefore, in this embodiment, one pulse is sent at a specific frequency etc. after the required dial information is completed and a minimum pause is set. In this embodiment, the following explanation will be made assuming that when the information is wrong, one pulse is sent, and when the information is correct, nothing is sent. In other words, when all the dial information has been displayed on the display tube, if it is found that there is a mistake, a pulse is sent, but that pulse is sent from the check output terminal of the dial information detection circuit IRC shown in the figure. Output as a positive pulse. As a result, transistor Q3 turns on and the input of IC-57 becomes L. Before that, as mentioned above, due to the capacitor C10 and the resistor R7, once the capacitor C10 is charged, the input side of the IC-57 remains at the H level for at least several hours. This means that its output is L, so the output of IC-58 is H, and the A1 and A2 terminals of mono multi IC-1 are set to H.
This was done to ensure that it remained inactive by setting it to the level, and to prevent the display from disappearing no matter how many times the bell rang.
Therefore, as mentioned above, when the input of IC-57 becomes L, its output becomes H, and the output of IC-58 becomes L.
Therefore, the A1 and A2 terminals are set to L, and the next time the doorbell rings, IC-1 is triggered as described above and can perform the operation of resetting the R-S flip-flop. The situation will be like this. That is, when the second doorbell rings, the input of IC-53 is L, the output is H, and IC-53 is turned on as described above.
The output of IC-54 becomes L, and the output of IC-55 becomes H.
Therefore, the input B of the monomulti IC-1 changes from L to H and is triggered, and its output terminal becomes L level, at which time the RS flip-flop circuit is reset again. Therefore, the numerical display mentioned above is cleared all at once. However, after this clearing, due to IC-56, its resistor R7, and capacitor C10, the input of IC-57 becomes H level and its output becomes L level, and the set terminal of flip-flop circuit IC-47 This is set when S goes to L level, and the output Q terminal goes to H level. Then, when new dial information is sent next time, it will be displayed on the display in a shifted manner as described above. And at the end, if this information is correct, the above-mentioned check pulse will not come, so Q3
cannot be turned on, and the input of IC-57 is C10 between one doorbell and the next (2 seconds in Japan).
Since it cannot be discharged, it remains at H level, and therefore the monomulti IC-1 continues to be inactive. Therefore, no matter how many times the doorbell rings from now on, the flip-flop circuit will not be reset and the number displayed at that time will remain as is. After that, at least a few seconds pass while the called party picks up the receiver and speaks with the other party, so during this time C10 is discharged and the input to IC-57 becomes L.
IC-1 enters the set state, and when the call ends, it becomes ready for the next incoming call. That is, when the next call arrives, a single pulse is emitted from IC-1, and all numeric displays up to that point are cleared. In this example, when the doorbell rings for the second time, IC-65 (7490) is counted.
The B terminal changes from L to H, which causes
The input of IC-61 becomes H, the output becomes L, and the IC
When the doorbell is ringing, the output of IC-55 is H, so the output of IC-59 is H, and the output of IC-60 is L. On the other hand, when the second bell finishes ringing, the output of IC-55 becomes L, the other input terminal 1 of IC-59 becomes L because the input of IC-61 is H, and the input of IC-59 becomes L, After that, even if the input terminal 2 becomes H due to the ringing of the bell, the output remains H, so the output of IC-65 is changed through the inverter IC-60. The input CP terminal continues to be low and cannot be counted any further. That is, input is prohibited when the count is "2", so that the numerical display once displayed will not be disturbed by subsequent noise or the like. Also, IC-62 is designed to ensure that the output of IC-54 is at H level while the doorbell is ringing, so that the output of IC-67 will not go to L level and cause unnecessary malfunction. be.

The called party sees the display displayed on the light emitting diode as described above, and picks up the telephone receiver when the called party's telephone number is known. When the handset is picked up, f1-1, f1-2, and f1-3 in the figure all fall to the opposite side of the figure. Thereby, the bridge diode D20-23, the inverter IC-
Since the voltage across the bridge-shaped diodes D20 to D23 of the outgoing dial information detection means consisting of 66 and the like will drop from 48V to several V, this causes the input side of the C-MOS IC-66 to go low. Therefore, the output side becomes H, and the output of IC-67 becomes L, so C12 is not charged either. That is, C
12 is already discharged from before. Therefore, the output of C-MOS IC-68 is H, and although the input of mono-multi IC-70 is not H, no single pulse is output at this time. Thereafter, the user ends the conversation with the other party and hangs up the receiver. In that case, the switch returns to its original state, so the output of C-MOS IC-66 remains L.
Since the R-S flip-flop circuit is not affected, the display still continues. At this time, the flip-flop circuit can be reset to erase the numeric display by operating the switch SW-2 according to the user's wishes. In this application, when a telephone handset is taken up, the reason why the capacitor C13 is switched to C12 by the contacts f1-3 of the switching means will be explained. That is, when the user picks up the handset and dials the other party's phone number, the dialing pulse sends the IC-66
The input of the IC-67 repeats L and H, and the output of the IC-67 repeats H and L, thereby displaying the other party's number. That is, in this case,
Since it is a manual dial pulse, its minimum pause will be over 600 m, s, but it will stop if the input of IC-68 goes to L level while dialing, so the C12, which constitutes a minimum pause means with a large capacity, will be used to fill the time period. It is. Therefore, as mentioned above, the first digit dial pulse is displayed on the numeric display, and after that, if the minimum pause is reached, C
12 is discharged, the output of IC-68 changes from L to H, one negative (L) pulse is generated from IC-70, and the input terminal of IC-52 becomes L and H, so its output becomes H and shifts. The H level of terminals A and B of register IC-2 is shifted by the clock pulse, and the dial pulse is counted by IC-69 and displayed in exactly the same order as described above. Become. In addition, to clear this, use the manual switch SW-2.

In addition, in this example, for example, IC-21~
Directing the output of the IC-32 to a printing device and printing it can be accomplished using known techniques. Moreover, in the case of the present application, its significance is more significant in its soft meaning than in its hard meaning. In other words, it became possible to print and save the telephone number of an incoming call on a printing device when the owner was away, so that when the owner returned home, he or she could look at it and see where the call came from. You can also make phone calls to check on someone you know. Furthermore, if you print up to the time of the above printing,
It is more convenient when the other party dials after returning home, and it even has the ability to replace conventional answering machines, and these effects can be said to have been achieved in accordance with the basic spirit of the present invention.

In addition, in this embodiment, the dial information is
Although we have inputted a decimal pulse sequence with a minimum pause, it goes without saying that this may also be input as a 4-bit code after binary coding or a 2/5 code used in exchanges, etc. . In this case, the coded items are displayed as numbers, but the change can be made by other means within the scope of the spirit of the present invention.

The above are the parts that are common to the original invention, and next, the features of the present application will be explained in detail. That is, when the above-mentioned telephone dial display device is installed inside each telephone set, it is very inconvenient as a terminal device if it only displays the telephone number of the calling party. This is because telephones are normally used for two purposes: when calling from the other party and when calling from you, and unless the display device is used in both cases, it is extremely inconvenient as a terminal device. Therefore, if they are used separately, it takes up space, and if they are displayed separately inside the same phone, the economic cost is also high. In other words, when you pick up the handset, in other words, when dialing manually from the device side, the number display is DP (mechanical dial pulse).
10 or 20CPS.

Also, even if the telephone is a pushphone, the encoder, such as General Instrument's AY-5
- If you connect a 9100 etc. to the pushphone's numeric keypad, when you press the pushphone's numeric keypad to dial the other party, it will simultaneously be converted to DP pulses by the encoder and displayed in the same way as DP via the shift register. Conversely, when a caller calls and the caller's phone number is automatically displayed, the information speed is preferably within several tens of milliseconds (ms) for each digit, and this can be followed by the dialing information speed. A shift action is required for each digit of the shift register. Therefore, in the present application, the circuit constants of C13 and C12 were designed to change automatically when the handset is raised or lowered. That is,
When the user picks up the handset and dials the other party's phone number, the dialing pulse
The IC-66 input repeats L and H, thereby displaying the other party's number. In other words, in this case, since it is a manual dial pulse, the minimum pause is 600ms or more, but if the input of IC-68 goes to L level while dialing, it will malfunction, so C12 with a large capacity is used to hold the time. be. Therefore, as mentioned above, the first digit dial pulse is displayed on the numeric display, and after that, when the minimum pause is reached, C12 is discharged and the output of IC-68 changes from L to H, and IC-
One negative (L) pulse is generated from 70, and IC-
Since the input terminals of 52 are L and H, its output is H.
Next shift register, terminals A and B of IC-2
The H level of the IC-69 is shifted by the clock pulse, and the dial pulse is shifted by the IC-69.
It will be counted at 9 and displayed in exactly the same order as above. In addition, to clear this, use the manual switch SW-2. (Already mentioned) As described above, the present application is based on a device that displays dial information of a caller, and detects that the caller has off-hooked the handset when calling another phone from that phone. By changing the circuit constants including the time constant of the input circuit, the circuit that used to follow the speed of dialing information of the caller can now follow the information speed of the dial pulse during normal manual dialing, especially the minimum pause. By automatically changing the constants, it is possible to use the display section, which is the main part of these devices, as a common one, and since the information display is automatically switched, the terminal device There is a system which reduces the area occupied by the caller and allows the caller's dial information display device to be used simultaneously as a dial number display device when the caller dials the caller himself to call someone else, and its practical effects. is large, so the applicant claims a patent within the above range.

[Brief explanation of the drawing]

FIGS. 1A, B, and C are diagrams of the principles of conventional automatic search methods, respectively. FIG. 2 shows a dial information display device according to an embodiment of the present application. FIG. 3 is a timing chart showing one aspect of the above dial information.

Claims (1)

[Scope of Claims] 1. Caller dial information receiving means for receiving caller dial information sent together with a calling signal; Outgoing dial information detecting means; The above-mentioned calling party dial information receiving means and outgoing dial. The minimum pause detection means provided between each digit of each dial information detected by the information inspection means and the time constant for detecting the minimum pause of the minimum pause detection means that is switched by picking up and restoring the handset. a switching means, inputting the dial information from the calling party dial information receiving means and the calling dial information detecting means, carrying up with the output of the minimum pause detecting means, and serially reading the calling party or calling dial information; A visual display device for telephone number information having display means for visually displaying it.