JPS6221354A - Dialing equipment for telephone set - Google Patents

Abstract

PURPOSE:To prevent an undesired dial signal or data signal from being sent to an opposite side during talking by sending a dial signal based on a stored destination number data in a memory according to a prescribed operation during prescribed time counted by a timer means. CONSTITUTION:A call detection circuit 29 supervises always the dialing operation and when a call is detected, and timer starts its operation. A control circuit 9 sends a PB tone from a PB tone oscillation circuit 13 to a wired telephone line 15 when a destination number is inputted to connect the line to the opposite side. When a redialing switch 7 is depressed and the destination data is stored in a memory 5, an on-signal of the switch 7 is sent to the control circuit 9 via a gate 33 to attain redialing. When a prescribed time elapses, however, due to the busy state of the opposite party, since the timer 31 times up, even when the redial switch 7 is operated, the gate 33 is closed and no redialing is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a telephone dialing device having a redial or speed dialing function.

[Technical Aspects of the Invention] A conventional telephone equipped with a redialing device is shown in FIG. 4, for example. If you want to call back if the person you are trying to call is busy, or if you want to immediately call the person you just called, you can simply press the redial switch without having to dial again. This allows you to communicate with the other party. As shown in the figure, there is a call switch 1 for instructing a call, a dial keypad 3 for inputting the destination number data of the communication partner, and a memory for storing the number data input by the dial keypad 3. 5, and a redial switch 7 that commands redialing again based on the number data stored in the memory 5 are connected to the control circuit 9. This control circuit 9 turns on and off a line relay 11, and a PB (button button) tone oscillation circuit 1.
Control 3. The line relay 11 connects and disconnects the wired telephone line 15 and the hybrid circuit 17. The hybrid circuit 17 is connected to the receiver 2 via one receiver amplifier.
1 is connected, and the addition circuit 23 is also connected. This adder circuit 23 is connected to a transmitter 27 via a transmitter amplifier 25.
is connected, and the PB tone oscillation circuit 13 is also connected.

When the calling switch 1 is turned on, the control circuit 9 turns on the line relay 11 to form a DC loop with the exchange.
Next, when the destination number data of the other party is input using the dial keypad 3, the control circuit 9 stores this number data in the memory 5. At the same time, the control circuit 9 controls the PB tone oscillation circuit 13 to generate a PB tone, and this P
The B tone is sent to the wired telephone line 15 via the adder circuit 23, the hybrid circuit 17, and the line relay 11.

When a conversation is established with the other party, the voice input from the transmitter 27 is transmitted to the other party via the transmitting amplifier 25, the adding circuit 23, the hybrid circuit 17, the line relay 11, and the wired telephone line 15. . Also, a voice signal from the other party is guided to the receiver 21 via a wired telephone line 15, a line relay 11, a hybrid circuit 17, and a receiver amplifier 19.

Redialing in such a telephone is performed as follows.

When the redial switch 7 is turned on with the destination number stored in the memory 5, the control circuit 9
The content is read out, the PB tone oscillation circuit 13 is controlled accordingly, and the PB tone is automatically sent to the other party.

[Problems with Background Art] However, in a telephone equipped with such a redial device, whenever the redial switch 7 is pressed, a dial signal based on the destination number data stored in the memory 5 is sent to the other party. If the user accidentally touches the redial switch 7 during a call, the other party will hear a high-level, irritating sound for a long time, and the call will be interrupted during that time.

In addition, in recent years, so-called out-pulse dial telephones have been made that use a Bush-type dial switch to send out dial impulses.If this telephone is equipped with a redial device, it will emit a very high-level sound called a dial impulse. However, for a longer time (for example, in the case of 10 pps, maximum 10 digits x 10 pulses x 0.1S/pulse = 1O
6> I will be leaving.

Furthermore, in the case of cordless telephones that have recently been put into practical use, data signals are used on the wireless line to send destination number data according to the dial switch, so if you accidentally press the redial switch during a call, the dial signal tone will be heard. In addition, there is a problem that this data signal tone reaches the other party.

Further, although the above description has been made regarding re-dialing, the same can be said of b equipped with a so-called speed dialing function in which pre-stored dialing information is sent out when a specific switch is pressed.

[Object of the Invention] Therefore, in order to solve the above-mentioned problems, the object of the present invention is to provide a dialing device for a telephone hoe that allows a good call without sending unnecessary dial signals or data signals to the other party during a call. It is about providing.

[Summary of the Invention] In order to achieve the above object, the present invention comprises a memory for storing destination number data, a call detection circuit for detecting a call, and a timer means for counting a predetermined period of time due to the call. , a dialing circuit configured to send out a dialing signal based on the destination number data stored in the memory in response to a predetermined operation only while a predetermined time is counted by the timer means to establish a line connection with the other party. This is a telephone dialing device.

[Embodiment of the Invention] An embodiment of the invention will be described in detail below based on the drawings.

FIG. 1 is a circuit diagram showing an embodiment of the present invention. In the figure, elements that perform the same functions as those of the conventional example shown in FIG. 4 are given the same numbers, and explanations of these elements will be omitted.

As shown in the figure, a call detection circuit 29 is connected to the call switch 1. This call detection circuit 29 monitors the state of the call switch 1 and activates the timer 31 when the call switch 1 is turned on.

The timer 31 is connected to the gate 33, and a high level signal flows to the gate 33 for a certain period of time from the moment the timer 31 is activated.

The redial switch 7 is connected to the control circuit 9 via the gate 33.

The gate 33 opens only while the signal sent from the timer 31 is at a high level, and connects and disconnects the redial switch 7 and the control circuit 9.

Next, the operation will be explained. FIG. 2 is a flow chart showing the operation of this embodiment.

In step 201, the call detection circuit 29 constantly monitors the call operation (off-hook operation), and when a call is detected, starts the operation of a timer in step 203.

In step 205, the control circuit 9 monitors whether or not a destination number is input from the dial 3. When the destination number is input, in step 207, the control circuit 9 sends a PB tone as a dial signal from the PB tone oscillator circuit 13 to the wired telephone line 15. Send out. This connects the line to the other party.

Note that if the other party is busy, the initial state is restored when the caller performs a call-end operation (on-hook operation) (not shown). Furthermore, when the caller performs a call termination operation such as dialing, the initial state is restored at that point. By the way, after the operation for making a call is performed, if the timer 31 is on, the time-up in step 209 is determined to be NO, and if the redial switch 7 is then pressed (step 211).
If the destination number data is stored in the memory 5 at step 213, an on signal from the redial switch 7 is transmitted to the control circuit 9 via the gate 33 at step 215, and a redialing operation is performed. That is, the control circuit 9 reads the contents of the memory 5, controls the PB tone oscillation circuit 13 accordingly, and automatically sends out PB tones (dial signals) corresponding to the number data stored in the memory.

However, in step 207 a PB tone is sent;
When a certain period of time elapses due to a conversation with the other party, the timer 31 times up in step 209, so the processing after step 211 is not performed, and even if the redial switch 7 is input, the gate 33 is closed, so this re-dial is not executed. The signal from the dial switch 7 is not transmitted to the control circuit 9, and no redialing operation is performed.

Therefore, even if the redial switch 7 is accidentally operated during a call, the dial signal sound will not be transmitted to the other party.

With the above configuration, redialing is possible only within a certain period of time after a call is made, and even if the redialing switch 7 is pressed by mistake during subsequent calls, a dialing signal will not be sent.

Note that this fixed period of time should be a little longer than the time (approximately 20 seconds) during which the exchange automatically disconnects the line due to no dial signal after the call is made; for example, 30 seconds.
It should be seconds.

Further, when the call switch 1 is turned off at the end of a call, the call detection circuit 29 detects this and resets the timer 31 with its output.

In the case of the out-pulse dial system, the control circuit 9 turns the line relay 11 on and off to generate dial impulses.

FIG. 3 is a circuit diagram of a cordless telephone device equipped with a redialing device according to another embodiment of the present invention.

This cordless telephone device consists of a parent device 35 connected to a wired telephone port a15 and a cordless telephone 37 connected via a wireless line.

Elements in this cordless telephone device that perform the same functions as those in the embodiment shown in FIG. 1 are given the same numbers.

The parent device 35 includes a line relay 11 and a hybrid circuit 17.
, transmitter 39, transmission antenna 41, control circuit 43, addition circuit 23, PB tone oscillation circuit 13, reception antenna 45
, receiver 47.

Cordless telephone B137 has receiving antenna 49, receiving! !
151, a receiver 21, a control circuit 53, a transmitter 27, a transmitter B155, a transmitter antenna 57, a call switch 1 having the same configuration as the first embodiment, a dial 3, two call detection circuits, a timer 31, It consists of a redial switch 7, a gate 33, and a memory 5.

In such a dress telephone headphone, the voice signal sent from the wired telephone line 15 is transmitted via the line relay 11, the hybrid circuit 17, and the transmitter 39 to the transmitting antenna 4.
1J: The signal is sent to four receiving antennas and supplied to the receiver 21 via the receiver 51.

On the other hand, the voice input to the transmitter 'a27 is transmitted by the transmitter 5.
5, transmitting antenna 57, receiving antenna 45, receiving 147
, the adding circuit 23, the hybrid circuit 17, and the line relay 11 to the wired telephone line 15.

When the call switch 1 is input and destination number data is input using the dial keypad 3, the control circuit 53 sends a data signal (for example, a binary pulse train signal converted into a digital signal) according to the destination number data to the transmitter 55. Received from 11
47.

This signal is demodulated by the receiver 147 and it, II 1
11 circuit 43, and the A control circuit 43 outputs PSI~
- controls the on-line oscillation circuit 13 and sends a dial signal to the on-line telephone line 15. In this case, a data signal is sent to the wired telephone line 15 in addition to the dial signal.

However, since the redial device is configured to allow redialing only within a certain period of time after the call is made, even if the 11 yen dial switch is operated by mistake during a call, the dial signal and data signal will still be sent to the other party. There isn't.

Note that the present invention is not limited to the circuit configuration shown in FIGS. 1 and 3; for example, the gate 33 may be placed between the memory 5 and the control circuit 9 (or 53).

Further, for example, the configuration of the calling switch 1 is arbitrary, and a hook switch having contacts corresponding to the contacts of the line relay 11, a slide switch, a touch type switch, etc. can be used. Or dial 3, call switch 1
, a rubber contact switch integrated with the redial switch 7 can also be used.

Furthermore, a configuration may be adopted in which the call origination switch 1 and the call termination switch are separated and the call origination operation and the call termination operation are inputted to the control circuit separately.

Also, the invention is not limited to redialing devices.

That is, the present invention can be similarly applied to a shortened dial system in which a predetermined dial number is stored in correspondence with a specific key and the dial oscillates by pressing the J3 key.

[Effects of the Invention] As explained in detail above, according to the present invention, even if a redial switch or the like is accidentally pressed during a call, unnecessary dialing signals or data signals are not sent to the other party, and the result is good. You can make phone calls.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a flowchart showing the operation of this embodiment, Fig. 3 is a circuit diagram showing another embodiment, and Fig. 4 is a circuit diagram showing a conventional redialing device. FIG. 1...Call switch, 3...Dial keypad,
5...Memory, 7...Re-dial switch, 29.
...Call detection circuit, 31...Timer, 33...Gate. 1-1-

Claims (1)

[Claims] A telephone equipped with a call command means for commanding a call, and a dial keypad for inputting destination number data of the other party, and which seizes the line and sends a dial signal when a call is commanded and the destination number data is input. , a memory for storing the destination number data, a call detection circuit for detecting the call, a timer means for counting a predetermined time due to the call, and a predetermined time being counted by the timer means. 1. A dialing device for a telephone set, comprising: a dialing circuit for transmitting a dialing signal based on destination number data stored in the memory in response to a predetermined operation for a certain period of time to establish a line connection with a called party.