JPH09149114A - Communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate malfunctions due to the operation errors of a user by surely switching a tone signal generation means to a telephone line after dial call origination. SOLUTION: When the off-hook of a hand set 7 is detected in a speech network circuit 8 and a telephone number is inputted from an input part 2, a control part 1 utilizes a dial call origination circuit 4 or 5 corresponding to the telephone number data and sends them out to the telephone line. Then, when the dial call origination is ended, the control part 1 starts timing. Then, when the prescribed time is timed, whether or not '1' is set as a line mode in a RAM 3 is judged, and when it is set, a changeover switch 6 is switched to the side of a DTMF call origination circuit. Thus, data inputted thereafter are converted into tone signals and sent out to the telephone line. The state is continued until an on-hook state is detected, and when on-hook is detected, a standby state is returned.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a communication device.

[0002]

2. Description of the Related Art At present, since a telephone line as a general public line includes a mixture of pulse lines and tone lines, a communication device such as a telephone set or a facsimile device which uses the above line is a dial signal corresponding to a telephone number. Is provided as a pulse signal and a function as a tone signal (DTMF), and can be switched according to the type of the line.

Further, various services using the above lines (ticket reservation, remote control of answering machine, etc.) are usually controlled by a tone signal,
At least the switching function from the pulse signal sending function to the tone signal sending function has become one of the essential functions.

[0004]

Conventionally, this switching from pulse to tone requires the user to operate a specific key as described in Japanese Utility Model Publication No. 2-24294. Therefore, if the user is unfamiliar with the operation,
There was a problem that the switching from the pulse to the tone was not successful and the required service could not be received.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. A first feature of the present invention is to provide means for inputting data such as a telephone number and data input from the input means. The means for generating a corresponding pulse signal, the means for generating a tone signal corresponding to the data input from the input means, and the telephone number data input from the input means are one of the generating means. , The data input from the input means after the dial signal is sent are always converted to the corresponding tone signal by the tone signal generating means and sent to the telephone line. And means for controlling.

The second feature is that the means for inputting data such as a telephone number, the means for generating a pulse signal corresponding to the data input from the input means, and the data input from the input means are provided. Means for generating a pulse signal,
Means for generating a tone signal corresponding to the data input from the input means, means for holding information indicating whether the connected telephone line is a pulse line or a tone line, and outputs of both generation means. Means for selectively switching one of the two to the telephone line and outputting the signal corresponding to the telephone number data input from the input means to the telephone line according to the information held in the holding means. The switching output means is switched, and means for controlling the switching output means so that the output of the tone signal generating means can be always output to the telephone line after the output of the telephone number data.

A third feature is that means for inputting data such as a telephone number, means for selectively generating a pulse signal or tone signal corresponding to the data input from the input means, timer means, The telephone number data input from the input means is converted into a pulse or tone signal by the generation means and transmitted to the telephone line, and then a predetermined time is counted by the timer means, and thereafter the data input from the input means. Is controlled by the above generating means so that it is always converted into a tone signal and sent out to the telephone line.

A fourth feature is that the means for inputting data such as a telephone number, the means for selectively generating a pulse signal or tone signal corresponding to the data input from the input means, and the polarity of the telephone line. Means for detecting reversal, and conversion of the telephone number data input from the input means into a pulse or tone signal by the generation means and transmission to the telephone line, and thereafter detection of polarity reversal by the detection means. As a condition, there is provided means for controlling so that the data inputted from the input means is always converted into a tone signal by the generating means and sent out to the telephone line.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention, in which (1) is a control unit composed of, for example, a microcomputer, and the control unit has a timer circuit and a control program in advance. A semiconductor ROM that has been stored is built in, and it controls the timer circuit and each unit described below based on the control program.

(2) is an input unit, which has a numeric keypad for inputting at least a telephone number and a switch for instructing whether the telephone line is a pulse line or a tone line. (3) is a RAM composed of, for example, a semiconductor random access memory, and various data necessary for the control operation of the control section (1) based on the control program is stored in the RAM.

(4) is a dial pulse transmission circuit,
The circuit generates and outputs a pulse signal corresponding to the ten-key input under the control of the control unit (1). (5) is DTMF
It is a transmitting circuit, which generates and outputs a tone signal corresponding to the ten-key input under the control of the control unit (1).
Reference numeral (6) is a changeover switch, which selectively sends one of the outputs of the transmitting circuits (4) and (5) to a telephone line via an NCU described later under the control of the control unit (1). To switch the output.

(7) is a handset, (8) is a speech network circuit, (9) is an NCU, and the speech network circuit (8) is between the telephone line and the handset (7) via the NCU (9). The loss compensation, sidetone prevention and the like for the voice signal transmitted and received at are automatically performed and the on-hook and off-hook states of the handset (7) are detected and notified to the control unit (1). Also, the above NCU
(9) acts as an interface between the transmission circuits (4) and (5) and the handset (7) and the telephone line, and detects the polarity reversal of the telephone line and notifies the control unit (1).

FIG. 2 is a flow chart showing the control operation of the control section (1) based on the above control program, and the operation of the apparatus of this embodiment will be described below based on this chart.

First, in step S1, the off-hook of the handset (7) is changed to the speech network circuit (8).
When a telephone number is input using the numeric keypad of the input unit (2), the control unit (1) uses the dial transmission circuit (4) or (5) corresponding to this telephone number data. Then, it is sent to the telephone line through the changeover switch (6) and the NCU (7). Specifically, when the telephone line is instructed in advance by the line instruction switch of the input unit (2) to be a pulse line, the line mode MOD is stored in the RAM (3).
Since "0" is set as E, the control unit (1)
Dial pulse transmission circuit (4) according to this set value
Also, by controlling the changeover switch (6), a pulse signal corresponding to the input telephone number data is sent from the NCU (9) to the telephone line. On the other hand, when the telephone line is a tone line, the above M
Since the ODE is set to "1", the control unit (1) controls the DTMF transmitting circuit (5) and the changeover switch (6) to send a tone signal corresponding to the input telephone number to the telephone line. When the dial transmission is completed, the control unit (1) starts time measurement by the built-in timer circuit.

In the subsequent step S2, it is determined whether or not the timer circuit has timed a predetermined time (about 5 seconds in this embodiment). When it is determined that the time has been timed for a predetermined time, the process proceeds to step S5. On the other hand, if not, the process proceeds to S3.
Proceed to step.

In step S3, it is determined whether or not the NCU (9) has detected the polarity reversal (reversal) of the telephone line. If it is detected, the process proceeds to step S5. If not, the process proceeds to step S4. Proceed with processing.

In step S4, it is determined whether or not the speech network circuit (8) has detected the on-hook state of the handset (9). When it is detected, the processing is terminated and returns to the standby state. On the other hand, if the on-hook state is not detected, the process returns to step S2.

Therefore, after dialing, unless the polarity of the telephone line or the on-hook of the handset (9) is performed, steps S2 to S4 are cyclically processed for a predetermined time (5 seconds).

In step S5, it is determined whether "1" is set as the line mode MODE in the RAM (3), and when it is determined that it is set, the DTMF is set.
Since the change-over switch (6) is switched to the side of the circuit (5) so that the output of the transmitting circuit (5) is guided to the telephone line, the process immediately proceeds to step S7. On the other hand, MOD
When "0" is set as E, the change-over switch (6) is connected to the circuit (4) side so as to guide the output of the dial pulse transmission circuit (4) to the telephone line. At this switch (6) DTM
After switching to the F transmission circuit (5) side, the process proceeds to step S7.

The step S7 is a step for indicating a normal call state, but at the time when this step is reached, the changeover switch (6) is always changed over to the DTMF transmitting circuit (5) side. Therefore, the data input in step S7 is converted into a tone signal by the DTMF transmission circuit (5) and sent to the telephone line.

The state of step S7 continues until the on-hook state of the handset (9) is detected in step S8, and when the on-hook state is detected, the state returns to the standby state.

[0022]

According to the present invention, since the tone signal generating means is always switched to the telephone line after dialing, the user himself / herself can be released from the operation for switching from the pulse to the tone and the operation error can be prevented. In addition, the key for switching from pulse to tone is not required, which leads to downsizing and cost reduction.

Further, since the switching to the tone is performed based on the detection of the reversal of the telephone line after dialing, unnecessary switching in the unconnected state with the other party can be avoided.

Further, even when the telephone is used on a line which does not cause re-polarization when the line is connected to the other party, the tone is switched after a predetermined time has elapsed after dialing, which is troublesome for the user. There is no need to force new operations.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the present embodiment.

[Explanation of symbols]

 1 Control unit 2 Input unit 4 Dial pulse transmission circuit 5 DTMF transmission circuit 6 Changeover switch

Claims (4)

[Claims] 1. A means for inputting data such as a telephone number,
The means for generating a pulse signal corresponding to the data input from the input means, the means for generating a tone signal corresponding to the data input from the input means, and the telephone number data input from the input means are One of the generating means is used to convert into a dial signal, which is sent to the telephone line, and the data inputted from the input means after sending the dial signal is always converted into a tone signal corresponding to the tone signal generating means. And a means for controlling so as to convert and send out to the telephone line. 2. A means for inputting data such as a telephone number,
Means for generating a pulse signal corresponding to the data input from the input means, means for generating a pulse signal corresponding to the data input from the input means, and a tone corresponding to the data input from the input means A means for generating a signal, a means for holding information indicating whether the connected telephone line is a pulse line or a tone line, and one of the outputs of the both generating means is selectively switched to the telephone line. And a signal corresponding to the telephone number data input from the input means to the telephone line, the switching output means is switched according to the information held in the holding means to output the telephone number data. And a means for controlling the switching output means so that the output of the tone signal generating means can always be output to the telephone line. 3. A means for inputting data such as a telephone number,
Means for selectively generating a pulse signal or tone signal corresponding to the data input from the input means, a timer means, and telephone number data input from the input means into a pulse or tone signal by the generation means. After the conversion and transmission to the telephone line, the timer means measures the elapse of a predetermined time, and thereafter, the data inputted from the input means is always converted into a tone signal by the generation means and controlled to be transmitted to the telephone line. And a communication device. 4. A means for inputting data such as a telephone number,
A means for selectively generating a pulse signal or a tone signal corresponding to the data input from the input means, a means for detecting polarity reversal of the telephone line, and the telephone number data input from the input means. The data inputted from the input means is always converted into the tone signal by the generating means on condition that the means converts the pulse or the tone signal to be transmitted to the telephone line and then the detecting means detects the polarity inversion. And a means for controlling the transmission to a telephone line.