JPS62157448A - Automatic dial equipment - Google Patents

Abstract

PURPOSE:To dial an opposite party by providing a memory device storing a subscriber number and a line acquisition instruction so as to allow a terminal equipment to acquire a line by having only to depress an address key and bringing the state into a speaker reception state. CONSTITUTION:In using a keyboard 28 to store the subscriber number of an opposite party in advance, a store key STORE, ten-key (1-0) for a subscriber number, a hand-free dial key HFD and an address key (e.g., M1) are operated in this order. When the memory key is depressed, whether or not the hand-free dial key HFD is in memory is checked at first. When the dial is stored, an electronic cradle switch 21 is turned on, a selection switch 27 is thrown to the position of an amplifier circuit 25 to close the loop of the communication line and a timer circuit 34 of a processing circuit 29 is set. Thus, the hand free dial operation is attained by operating any of address keys M1-M4 storing the hand free dial information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an automatic dialing device for terminal equipment, such as a telephone, connected to a communication network.

[Technical Background of the Invention] As shown in FIG. 3, in the conventional automatic dialing device, terminals L1 and L2 of the communication line are connected to a rectifier diode bridge 1, and the + side of this bridge 1 is connected via a cradle switch 2. It is connected to a constant current circuit 3 and a dial circuit 4 that sends out a signal according to a dial number. The output of the dial circuit 4 amplifies the other party's audio signal and connects it to the speaker SP.
An amplifier circuit 5 that emits sound from the terminal, and a speech network circuit 6 that converts the other party's voice signal into sound and the user's voice into an electrical signal are connected.

There is also a numeric keypad for dialing the subscriber number of the other party.
A keypad 7, which includes a store key for writing a subscriber number into a storage circuit, a memory key for recalling stored contents, etc., is connected to an input circuit 8 to which key outputs of the keypad 7 are input. This input circuit 8 is connected to a control circuit 9 that controls dialing, storage, etc. based on the contents of the operation of the keypad 7, and a storage circuit 10 that stores subscriber numbers. The control circuit 9 is also connected to an output circuit 11 that sends out a dial signal in response to a command, and the output of the output circuit 11 is sent to the dial circuit 4.

The constant current circuit 3 described above is a constant current source for the input circuit 8, control circuit 9, output circuit 11, etc. Further, a speaker receiver switch 12 is connected in parallel to the cradle switch 2. Zarani 13 switches the speaker receiver switch 1 to receive a call using the speaker SP and to make a call using the handset 14.
This is a selection switch that is selected in conjunction with 2.

If the circuit is configured to decline, enter the subscriber number of the other party in advance by operating the keypad 7 and enter addresses M1 to M4 in the memory circuit 10.
Remember it. When talking with the other party, when the speaker receiver switch 12 connected in parallel to the cradle switch 2 is closed, the selection switch 13 interlocked with the speaker receiver switch 12 enters the B side, energizing the amplifier circuit 5 and closing the circuit. By doing so, the communication line is captured. Next, operate the M1 key of the keypad 7 to address M1 to M4 of the memory circuit 10 that stores the subscriber number of the other party in advance.
Ml is read out and supplied to the control circuit 9, and the control circuit 9 controls the output circuit 11 to output an output signal corresponding to the subscriber number of the other party stored in the address M1 of the storage circuit 10. . A dial signal corresponding to the subscriber number is then sent from the output circuit 11 to the dial circuit 4 over the communication line.

[Problems with the Background Art] Although the automatic dialing device described above has the advantage of being able to send a dial with a simple operation, and being able to stand by in a hands-free state until the other party picks up if it is set to the speaker listening state, It cannot be called a complete automatic dialing device because it requires a selection operation to put the speaker in listening mode, a speaker listening switch to capture the communication line, and a selection switch before operating the address key for dialing the other party. Met.

[Object of the Invention] The present invention eliminates the above-mentioned drawbacks, and allows the terminal device to automatically capture the line and dial the other party while listening to the speaker when the user simply presses the address key on the dialer of the other party. It is something.

[Summary of the Invention] The automatic dialing device of the present invention includes a storage device that stores subscriber numbers and line capture commands, and a control circuit that controls an electronic switch connected in parallel to a cradle switch that connects and disconnects communication lines and terminal equipment. In accordance with the pre-stored line capture command, the electronic switch is automatically turned on to capture the line, and a calling signal is sent based on the pre-stored subscriber number. It is what it is.

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

In Figure 1, terminals L1 and L2 connected to the communication line
A rectifier diode bridge 20 is connected to the , and the positive side of this bridge 20 is connected to a dial circuit 22 and a constant current circuit 23 that send out a signal according to the dial number via a cradle switch 21 that opens and closes electronically. . Further, a cradle switch 24 that opens and closes mechanically is connected in parallel to the cradle switch 21. The output of the dial circuit 22 includes an amplifier circuit 25 for amplifying the other party's voice signal and emitting the sound from the speaker SP, and a speech network circuit 26 for converting the other party's voice signal into sound and the user's voice into an electrical signal. It is connected. 27 is a selection circuit for connecting either the amplifier circuit 25 or the speech network circuit 26 to the negative side of the rectifier diode bridge 20.

Also, numeric keypad 1 for dialing the subscriber number of the other party.
~01 A keyboard 28 consisting of a store key 5TORE for inputting the subscriber number into the memory circuit, a hands-free dial key HFD for dialing in the on-footer state and receiving a call through the speaker, and address keys M1 to M4 for calling up stored contents. is connected to an input circuit 30 of a processing circuit 29 that processes key output from this keyboard 28. The input circuit 30 operates based on the content of the keypad 28 operation.
It is connected to a control circuit 31 that controls dialing, storage, etc., and a storage circuit 32 that stores subscriber numbers.

Further, the control circuit 31 is connected to an output circuit 33 that outputs a dial signal from the dial circuit 22 in response to a command.

The output circuit 33 includes the cradle switch 21 and the selection circuit 27
It is also connected. Rough memory circuit 32 and output circuit 3
A timer circuit 34 is inserted between the three. This is because the timer circuit 34 is used to ensure that the communication line has a rise time of the necessary level captured by the terminal equipment.

With this configuration, the key to storing and hiding the subscriber number of the other party using the keyboard 28 is to use the store key 5TORE and the subscriber number to be stored using the numeric keys 1 to 0.
Then, operate the hands-free dial key HFD and the address key, for example, Ml, in this order.

As a result, the address key M1 stores a subscriber number and a command to dial in an on-hook state and control to a hands-free dialing state in which the telephone is in a speaker listening state. Therefore, when the user wishes to dial a subscriber's number in a hands-free manner with the other party, the user operates the address key M+ and the contents of the stored command are executed. That is, a signal is outputted from the output circuit 34 to the cradle switch 21, which is electrically opened and closed, to close it, and at the same time, the selection circuit 27 is switched to the amplifier circuit 25 and connected to the communication line. At the same time, the timer circuit 34
is set, and the amplifier circuit 25 is made to wait until it fully functions. For example, while waiting for 4 seconds, the amplifier circuit 25 reaches a sufficient state as a load, so it seizes the communication line. Here, the output circuit 33 sends a signal corresponding to the subscriber number to the dial circuit 22, and the dial circuit 22 sends a dial signal to the communication line.

FIG. 2 shows the operation of the processing circuit 29 shown in FIG. 1 realized by a program.

That is, when the memory key is pressed, it is first checked in step S1 whether the hands-free dial key HFD is stored in memory. If the hands-free number is stored in memory, it is checked in step S2 whether the mechanical cradle switch 24 is on-hook (contact closed state). If it is an on-footer, it is checked in step S3 whether a dial (subscriber number) is stored next to the hands-free number information. If the dial is stored in memory, the electronic cradle switch 21 is turned on, the selection switch 27 is set to the amplifier circuit 25 side, the communication line is closed, and the timer circuit 34 of the processing circuit 29 is set in step S4. In step S5, it is checked again whether the mechanical cradle switch 24 is on-hook, and if it is on-hook, the process proceeds to step S6, where it is checked whether the timer circuit 34 has elapsed for N seconds.

If N seconds have elapsed, it is determined that the communication line has been captured, and a dial signal is sent to the dial circuit 22 in step S7.

In step S1, if the hands-free number is not stored in memory, the process advances to step S8 to check whether the cradle switch 24 is on-hook. Here, if the dial is on footer, the hands-free dialing operation is completed, if the dial is not on-hook, the hands-free dialing operation is completed, and if it is memorized, it is determined in step S3 whether the dial is memorized. If the dial has not been memorized, the cradle switch 21 is turned off at step Sl[+, and the selection switch 27 is switched to the speech network circuit 26 side. Also step S
Even when the cradle switch 24 is not on-hook in step 5, the process proceeds to step 310.

Roughly speaking, if the cradle switch 24 is not on-hook in step S2, the process advances to step $7, and if the dial is not stored in memory in step S3, the hands-free dialing operation is ended.

If the timer circuit 34 has not elapsed in N seconds in step S6, the process returns to step S5.

By following these steps, the address keys M1 to M in which the hand-free number information is stored can be
By operating any of the keys 4, hands-free dialing becomes possible.

[Effects of the Invention] As described above, according to the automatic dialing device of the present invention, by simply turning on the address key, the communication line is captured and dialed, and the caller's presence is confirmed from the speaker. This can be done automatically, improving operability.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing one embodiment of the present invention, and FIG.
The figure is a flowchart diagram for explaining the operation of Figure 1,
FIG. 3 is a conventional block circuit diagram. Ll, L2...terminal 21.24...Credor switch 22...Gui X full circuit 28...
・・・・・・・・・Keyboard HDD・・・・・・・
... Hands-free dial keys M1 to M4 ... Address key 29 ... Processing circuit applicant
Toshiba Corporation Agent Patent Attorney Suyama Sa - Tomi -J Part 1 12 Disease 2 Certain 312I

Claims (1)

[Claims] a storage device for storing a subscriber number and a line capture instruction;
In an automatic dialing device comprising a control circuit for controlling an electronic switch connected in parallel to a cradle switch that connects and disconnects a communication line and terminal equipment, the electronic switch is automatically turned on in accordance with the line capture command stored in advance. An automatic dialing device that seizes a line and sends out a calling signal based on a pre-stored subscriber number.