JPS634750A - Communicating equipment - Google Patents

Abstract

PURPOSE:To attain the communication to an information supplier only by the person having the right to receive the information by controlling the possibility or impossibility of the communication in accordance with the contents of the given calling information. CONSTITUTION:A rewritable memory 4 stores the opponent telephone number and the remaining number of the telephone how many times more the telephone call can be made to the opponent. A control device 3 has registers RN and RT to store temporarily the remaining number of the calling read from the memory 4 and the opponent telephone number. Thus, when the human being to make a telephone call does not have a means to know the telephone number and does not have a means to operate the remaining number of the calling, the human being can make a telephone call to the opponent of the telephone only by the number of times set beforehand.

Description

[Detailed description of the invention] 〔Technical field〕 TECHNICAL FIELD The present invention relates to a communication device.

[Prior art]

Conventionally, for example, when a person receiving a phone call provides information to the person making the call, a method of restricting the right to receive information is to require the person who has the right to receive information to enter a password known only to the person making the call. There is a method to prevent those who do not have the information from receiving it. However, this system has the drawback that even if a person who does not have the right to call makes a call, the right is determined by the receiver after the call is established, which wastes lines and equipment.

〔the purpose〕

The present invention has been made in view of the above points, and its purpose is to provide a communication device that allows only those who have the right to receive information to communicate with information providers.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an external view of an embodiment of the present invention, where K is a telephone main body and H is a handset, which looks like a commercially available telephone with a dial removed.

FIG. 2 is a block diagram of this embodiment housed in the casing shown in the external view of FIG.
It is a circuit called U, and the Ll and L2 terminals are connected to the public line, and the DI.

The D2 signal is connected to 2, which is generally the same transmitting and receiving circuit as the telephone. Also signals Kl, 2 and CI.

C2 is a control signal for controlling the NCU 1, and the details will be described later. Reference numeral 4 denotes a rewritable memory, which stores the telephone number of the other party and the number of remaining calls that can be made to the other party, which are important elements of this embodiment. In the above apparatus, the control procedure etc. controlled by the control device CPU are determined by software in the control device CPU. The control device also has registers RN and RT for temporarily storing the number of remaining calls read from the memory 4 and the telephone number of the other party.

FIG. 3 is an internal circuit diagram of NCU 1, and B is a bell that rings in response to a 16 Hz calling signal sent from the telephone office, and switches HS1. H52 and HS3 are hook switches that are turned on when the handset is lifted from the telephone body. Signals Kl and 2 are signals to inform the outside whether the handset is on or not, and are connected to the hook switch HS.
It does not touch both ends of 3.

That is, when the handset is turned on, the signals K1 and 2 are short-circuited. The hook switch HS2 also connects to the line. DS is a relay switch driven by a relay coil DSL, and when the control signal C1 is "H", the relay switch DSL is connected to the M side. This switch D
S is a switch that is kept on while sending dial pulses to the line to eliminate the influence from the transmitting/receiving circuit.

DI is a relay switch driven by a relay coil DIL, and when the control signal c2 is "H", the relay switch DSL is connected to the M side. By switching this switch DI between "H" and "L" of the control signal C2, a dial pulse train can be sent to the line.

HSI and resistor R are for canceling contact spark of dial impulse. The capacitor C prevents direct current from flowing into the bell C, and also functions to eliminate the contact spark of the dial impulse. Note that the resistance R is 150Ω, and the capacitor C is 0.9μF.

The operation of this embodiment will be explained below based on the flowchart shown in FIG. First, in step 100, the CPU 3 sets the control signals C□ and C2 to °°L'°. With this, as mentioned in the explanation of NCU 1 above,
Relay switches Di and DS are connected to the B side, non-DI
It enters the AL sending state (that is, the normal state). The process then proceeds to step 110. Here, it is detected whether the handset is lifted up or not. As mentioned above, when the operator lifts the handset from the telephone body, the hook switch HS
2 is closed, the line is connected, and hook switch H33 is also closed, causing signal Kl.

K2 becomes short-circuited. Therefore, when the handset is put down, the result of decision step 110 is always NO, and the loop of step 110 continues to repeat, and when the operator picks up the handset, the result of decision step 110 is YES and the process proceeds to step 120. .

Here, the control circuit CPU3 reads the telephone number and the number of remaining calls from the memory M, and stores them in registers RT and RN, respectively.

The process then proceeds to step 130, where it is determined whether the contents of the register RN storing the number of remaining calls are 0 or not. If it is 0, it means that the predetermined number of calls has been used up, and the process jumps to end processing step 180 without performing the following line connection work. If the contents of the register RN are not 0, it means that the call is still possible, and the process proceeds to the next step 140, where the control signal C1 is set to "H". As mentioned above, the control signal c1 is “H”.
”, the relay switch falls to the DSM side and enters the dial sending state.Next, the process proceeds to step 150, and a dial pulse is sent to the telephone line according to the data in the register RN.As mentioned above, the dial pulse is set to the °°H of the control signal c2. In this example, a pulse train is generated based on the 20PPS switch based on the Telecommunications Business Law.In other words, as an example, when transmitting 321 and 4321, , First, corresponding to "3", control signal C2 is "H" for 16m5ec, 34m5
500m after repeating the cycle of "L" between ec three times
Add “L” for 5ec. This means that dial "3" has been sent out.

Next, in order to send out "2", the control signal C2 is 16m5.
ec to "Hp", then 34111SeC to "L'"
shall be. Repeat this twice and set the controller number C2 to °L" for another 500 m5ec. Similarly, by generating a dial pulse train corresponding to 1-4321, 321-4
You can call 321.

Now, when dial pulse transmission is completed, the process proceeds to step 160 and the control signal C1 is set to "L". This completes the dial pulse sending state and proceeds to the next step 170. Since the above call will be made once, 1 is subtracted from the contents of the register RN indicating the number of remaining calls, and the result is stored in the memory 4.

By proceeding to step 170, the operator is now in a state of talking with the other party, but step 180 is a step to wait for the call to be completed, and the operator places the handset on the telephone body. In order to detect the signal Kl, 2 is short-circuited again, that is, the hook switch H
Check whether S3 is closed. If the signals Kl and 2 are short-circuited, it means that the call is still in progress, so step 180
Repeat, otherwise proceed to the breath which means the call is complete.

This completes the control program and returns to the starting point to prepare for the next call.

Using the method described above, if the person making the call does not have a way to know the phone number and does not have a way to control the number of remaining calls, he or she can only call the person with that phone number a preset number of times. Not each.

(Effects) As explained above, according to the present invention, by not disclosing the communication destination designation code, it is possible for those who do not have a storage medium and for those who do not have the information provider's communication destination designation code stored in the storage medium. cannot communicate. In addition, since communication is enabled or disabled according to the content of the given call information, the information provider can communicate only with those who have the right to receive the information, making it possible to use lines and equipment effectively. can.

[Brief explanation of the drawing]

FIG. 1 is an external view of an embodiment of a communication device according to the present invention. FIG. 2 is a block diagram of the tree layer side. Figure 3 is N
It is a circuit diagram of CU1. FIG. 4 is a flowchart showing the operation of CPLJ3. N-111 network control device T-111 transmitting/receiving device CP U ---1 control device M --- Memory H3I to HS 3 --- Hook switch DSL, DI
L----Relay switch drive coil DI, DS----
-Relay switch B---Hell applicant Canon Co., Ltd. 1 Figure 4

Claims (1)

[Claims] a storage medium for storing communication-related information and a communication destination designation code for specifying a communication destination; reading means for reading information from the storage medium; and sending means for transmitting the communication destination designation code to a communication line. and a changing means for changing the information stored in the storage medium, and is connected by the communication destination designation code, and by performing a communication operation, the changing means changes communication-related information. communication equipment.