KR19980043201A - Automatic redial device and method of communication device - Google Patents

Abstract

[purpose]

The present invention relates to a communication device using a telephone line such as a general telephone and a facsimile, wherein an automatic redialing is performed in which a counterpart telephone or a facsimile is automatically connected to the counterpart by repeating dialing during a call or communication. ) Apparatus and method.

[Configuration]

The present invention provides a key input unit for inputting a key signal, a central processing unit for receiving a redial on / off key signal and a line signal from the key input unit, and outputting a control signal to each unit, and the key signal and state of each unit of the key input unit. A memory unit for storing information, a tone detector for detecting dial tones, busy tones and ringing tones on a telephone line and outputting corresponding line signals to the central processing unit, and the tone detector for detecting busy tones due to a busy communication device In this case, according to the redial control signal of the central processing unit, the main function is performed by repeating the dial until the connection with the other party is automatically made.

Description

Automatic redial device and method of communication device

1 is a block diagram of a telephone for performing the automatic redial function of the present invention.

2 is a flowchart of operation of the telephone in the automatic redial mode according to the present invention;

3 is a flowchart illustrating the operation of the telephone in the interrupt mode according to the present invention.

Figure 4 is a block diagram of a facsimile for performing the automatic redial function of the present invention.

5 is an operation flowchart of the fax in the automatic redial mode according to the present invention.

6 is a flowchart illustrating operation of a facsimile in an interrupt mode according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: key input unit 20: central processing unit

30 memory unit 40 tone detection unit

50: speaker switch 60: main function performing unit

SP: Speaker

The present invention relates to a communication device using a telephone line such as a general telephone and a facsimile, wherein an automatic redialing is performed in which a counterpart telephone or a facsimile is automatically connected to the counterpart by repeating dialing during a call or communication. ) Apparatus and method.

In general, a fax for recording a call or data and random characters and shapes that are difficult to transmit by telephone and data communication is not used. If the other phone or fax is busy or busy, do not press the telephone number button that was just pressed again. There is a redial function to retry connection with the other party by printing the phone number stored in the memory by pressing the redial button.

However, the redial function provided in the telephone and the fax simply outputs the phone number stored in the memory according to the pressing of the redial button. When the call of the other party continues, the user can use the redial button to end the call. You have to keep calling or wait for a while before you call again.

Therefore, the user has to keep pressing the redial button while checking the tone status of the telephone and fax until the connection with the other party is established. It was more difficult to find, and if you need to communicate urgently, there were a number of problems, such as difficult to find a solution.

On the other hand, in the case of using the private exchange in the premises, the counterpart call reservation function has been solved to some extent, but since the call reservation function is limited to a private exchange rather than a general telephone and a facsimile, the service is not provided to the general public. This is difficult.

Therefore, the present invention has been devised to solve the above problems, and its object is to detect the line signal of the telephone line and periodically dial until it is connected to the other party when the detected line signal indicates that the other communication device is busy. It is to provide an automatic redial device and method of a communication device that can be automatically and conveniently connected repeatedly.

The automatic redial apparatus and method of the communication device of the present invention for achieving the above object, by detecting the line signal (Dial Tone), busy tone (Busy Tone) and ring back tone (Ring Back Tone) of the telephone line Each operation processes a corresponding operation, and when the busy tone is detected while the other party is in a call, periodic dialing is automatically repeated to establish a connection with the other party.

Hereinafter, with reference to the accompanying drawings will be described in detail the automatic redial apparatus and method of the present invention.

Here, the automatic redial function of the present invention is applicable to both a general telephone and a facsimile, and the automatic redial method will be described using specific examples of the configuration of the telephone and the facsimile.

1 is a block diagram of a telephone for performing the automatic redial function of the present invention, which is composed of a general dial number key and a plurality of function keys such as a speaker on / off key and a redial on / off key to display a corresponding key signal. A key input unit 10 for input, a central processing unit 20 for receiving a key signal from the key input unit 10 and outputting a control signal for controlling each unit, and storing all system parameters required by the telephone In particular, the memory unit 30 for storing the dial number and speaker key on / off mode and the redial key on / off mode state input from the key input unit 10, various line signals and voice signals coming from the telephone line To detect the dial tone, busy tone and ring tone and output the corresponding signal to the central processing unit 20 and the speech signal according to the control signal of the central processing unit 20. Additional functions such as speaker switch 50 to turn on / off the output of SP, telephone line matching function, ring detection function, pulse / DTMF dialer function, telephone ring function, built-in microphone device for speakerphone It consists of the main function performing unit 60 of the conventional telephone to perform.

The central processing unit 20 has an automatic redial processing function of the present invention and inputs a speaker key on / off signal, a redial key on / off signal, and key signals of various dial numbers from the key input unit 10. The tone detection unit 40 receives a dial tone detection signal, a busy tone detection signal, and a ring tone detection signal, and receives the ring input signal and a hook on / off from the main function performing unit 60. / Off) receives the detection signal and the handset on / off detection signal, respectively, and outputs a switch control signal for controlling the speaker (SP) to the speaker switch 50, the main function performing unit 60 to hook on / off Outputs a control signal and a dial number control signal, respectively.

The speaker SP is for use as a speaker phone, and is used to provide various line signals and voice signals coming from a telephone line to a user.

The operation of the phone configured as described above will be described with reference to FIGS. 2 and 3 by dividing into an automatic redial mode and an interrupt mode when a key signal and a ring signal are input.

2 is an operation flowchart of the phone in the automatic redial mode according to the present invention, and FIG. 3 is an operation flowchart of the phone in the interrupt mode according to the present invention.

First, the telephone detects whether a redial key has been input from the key input unit 10, and performs automatic redial mode processing when a key input is detected, and other key signals or key functions other than the redial key from the key input unit 10. When the ring signal is input from the execution unit 60, the CPU 20 enters into an interrupt state and performs the corresponding interrupt mode processing.

That is, when an input of a redial key is detected, the automatic redial mode is checked or the redial mode stored in the memory unit 40 is checked (S1). If the redial mode is set (S2), the speaker is turned on. Check the on / off state (S3).

If the redial mode is reset (S2), the memory unit 40 continues to read and waits until the redial mode is set.

If the speaker state is turned on in the on / off state checking step (S3) of the speaker (S4), since the user is making a phone call in the speakerphone mode, the speaker switch 50 is turned off (S5) to release the speakerphone. Eliminate noise caused by automatic redial of the phone.

After the step S5, the redial mode is checked again (S6).

Step S6 is a countermeasure for the case where the user cancels the automatic redial mode during the automatic redial. If the redial mode is reset (S7), the automatic redial mode procedure is stopped (S8). (S9) and return to the initial redial status check procedure (S1).

If the speaker state is turned off in the speaker on / off state checking step (S3) (S4), the redial mode state checking step (S6) is performed without controlling the speaker switch 50.

If the redial state is continuously set in the redial mode state checking step (S6) (S7), the telephone line is delayed for a predetermined time by hooking on (S10) (S11).

When the predetermined time passes, the telephone line is hooked off again (S12) to detect the line signal of the telephone line to check the line state (S13).

That is, the central processing unit 20 can confirm by reading the detection signal input from the tone detection unit 40.

When a dial tone, i.e., a dial tone, is detected from the line signal (S14), the user outputs a dial number stored in a dial buffer stored in a memory while making a telephone call to the telephone line (S15).

If no dial tone is detected (S14), a call cannot be made and the flow returns to the redial mode check step S6.

After outputting the dial number stored in the dial buffer in step S15, the controller checks the line signal input from the tone detector 40 again (S16), and if a ring tone is detected (S17). The central processing unit 20 turns on the speaker switch 50 in a state in which the exchange of the ring signal is transmitted to the counterpart phone (S18) so that the speaker is in the speaker phone state again.

However, if the busy tone is detected in the step S17, if the call path of the other party's phone is not formed, that is, the phone call of the other party is being continued, the process returns to the redial mode check step S6 and the other party calls. Repeat the process.

After the step (S18), the user may call the other party to the speaker phone in the speaker phone state, or lift the handset to release the speaker phone and talk.

Therefore, the central processing unit 20 reads the handset on / off detection signal from the main function performing unit 60, and if the handset is hooked on (S19), the call completion confirmation step (S21) because the user maintains the speakerphone state. If the handset is hooked off (S19), the speaker switch 50 is turned off (S20) and the call completion confirmation step (S21) proceeds.

If the call is completed in the call completion check step (S21), the redial mode reset is stored (S8), and after clearing the dial buffer (S9), the process returns to the first redial mode check step (S1) and automatically resumes. If the redial mode is set in the standby state for the mode processing, the process is repeated.

By the automatic redial mode processing operation as described above, even when the other party is busy, the user can automatically connect with the other party without any troublesome operation until the end of the call.

Next, the operation of the telephone in the interrupt mode will be described. First, the interrupt processing process is divided into an operation procedure for processing a call reception mode generated by a ring coming from a telephone line and a procedure for processing various key inputs.

If it is confirmed as ring input mode in the interrupt mode check step, check if the redial mode is set. If the redial mode is set, a call is placed in the middle of automatic redialing. Wait until the call ends.

If the redial mode is not set, the mobile phone waits until the telephone call is completed as a normal telephone reception state.

When the call is completed in the redial mode, the redial processing state is restored again to restore all the information held during the redial processing.

At the end of the step, the ring interrupt status is cleared to enable operation for the next interrupt.

On the other hand, if the key input mode is confirmed in the interrupt mode check step, the process of checking the key input type is performed.

In this case, the key input may be of various types according to various functions of the telephone. However, the present invention will be described in a process divided into dial keys, speaker keys, and redial keys.

If it is determined in the key input type check step that the dial key is input, it is checked whether the telephone line is hooked off. This is accomplished by the central processing unit 20 confirming the hook on / off detection signal input from the main function performing unit 60.

If the telephone line is hooked off in the above step, the user wants to make a call. Therefore, one digit data corresponding to the telephone number input by the user is stored in the dial buffer of the memory unit 40, and the dial number is dialed. Output to the line.

If it is determined as a speaker key in the key input type check step, a speaker switch control signal is output. The speaker switch on / off control signal is output in response to the speaker key on / off signal input from the key input unit 10.

Then, the hook on / off control signal is output to turn on or off the speaker phone state by hooking on or off the telephone line.

After the above step, the on / off state of the speaker phone is stored.

Finally, when it is determined that the redial key is in the key input type checking step, it is checked whether the redial key is on or off and stores the state for each case.

That is, when the redial key is off, the redial mode reset is stored, and when the redial key is on, the redial mode set is respectively stored to perform the automatic redial mode of the present invention.

As described above, when the processing for the dial key input, the speaker key input, and the redial key input according to the key input is completed, the key interrupt state is canceled to enable operation for the next interrupt.

The automatic redial function of the present invention described above is applicable to a general facsimile as well as being performed in a general telephone.

Therefore, the operation of the automatic redial function in the facsimile is almost similar to the operation processing in the phone, which will be briefly described with reference to FIGS. 4 to 6 as follows.

Fig. 4 is a block diagram of a facsimile machine for performing the automatic redial function of the present invention, for selecting a redial on / off key, dial number key, communication input key, fax stop key, and other additional functions. A central processing unit (20 ') configured to include a fax key and the like, and a key input unit (10') for inputting a corresponding key signal, and a key signal from the key input unit (10 ') and outputting a control signal for controlling each unit. And a memory unit 30 'which stores all system parameters required by the facsimile, and particularly stores the dial number and redial key on / off mode and the state of the fax key input from the key input unit 10. And conventional facsimile communication with a tone detector 40 'that detects dial tone, busy tone, and ring tone from various line signals and voice signals coming from a telephone line and outputs the corresponding signal to the central processing unit 20'. It consists of a main function performing unit (60) for performing the function.

In the above-configured facsimile, the central processing unit 20 'performs a main function performing a fax tone control signal when a communication input key signal is input from the key input unit 10' or connected to the other party's facsimile in the automatic redial mode. And outputs a signal corresponding to the main function execution unit 60 'when the fax stop key or the other fax key is input.

In the facsimile, as shown in FIGS. 5 and 6, the facsimile operation is divided into an automatic redial fax mode and an interrupt mode.

The automatic redial fax mode processing of FIG. 5 is the same as that of the telephone of FIG. 2 in the basic operation procedure, except for the speaker phone function. The call completion procedure of FIG. 2 confirms the fax tone control signal output procedure and transmission completion. The detailed descriptions are weak because they are only replaced by the procedure.

Similarly, the interrupt processing of the fax of FIG. 6 is divided into a reception processing mode by a ring input and an interrupt processing procedure by a key input. Thus, the fax reception procedure by the ring input uses a call completion confirmation procedure from the ring input procedure of FIG. The procedure for confirming fax reception is replaced with each other. The procedure for checking the key input type has been added for the communication input and other fax key processing procedures of the fax and the fax interrupt key processing procedure, and the speaker key processing procedure for the speaker phone control has been added. Except for the case, the operation process is the same, so the detailed description thereof is weak.

As described above, the automatic redialing method of the present invention in a general telephone or a facsimile is possible to make a reservation at a normal home without the help of an exchange when the other party is busy and if the automatic redial key is operated, In addition to making phone calls without interrupting your work, the phone automatically switches off the speaker when the phone is operating in automatic redial mode, eliminating telephone dial outgoing and line status when dialing. You can be in a quiet state.

In addition, the automatic redial reset function allows the user to stop this function at any time as needed and can be applied to all phones because it does not interfere with various existing functions or all functions to be added in the future.

And, if the fax adds this automatic redial function, when sending a document to the other fax machine, when the other fax machine is busy, it continues dialing until the fax finishes communication. As the fax communication is possible by outputting the tone, a convenient fax communication service function is provided to the user.

Claims (4)

In a communication device such as a telephone or a facsimile that performs telephone calls and facsimile communication using a telephone line, A key input unit 10 for inputting a key signal for performing the automatic redial function, and a redial on / off key signal from the key input unit 10 and a line signal detected by the tone detector are inputted and are required for automatic redialing. A central processing unit 20 for outputting the control signal to each unit, a memory unit 30 for storing the key signal of the key input unit 1 and state information of each unit, dial tone, busy tone and Tone detection unit 40 for detecting a ring tone and outputting the corresponding line signal to the central processing unit 20, and when the tone detection unit 40 detects busy tone due to a busy communication device, the corresponding central processing unit Communication device, characterized in that consisting of the main function performing unit 60 to repeat the dial automatically until the connection with the other party according to the redial control signal of the device 20 to automatically connect with the other party Automatic redial devices. The method of claim 1, It is characterized in that it further comprises a speaker switch 50 connected to the output terminal of the central processing unit 20 and controls to output a signal sound or a voice signal on the line to the speaker SP only when a connection is made with the counterpart communication device. Automatic redial device of communication device. In performing the interrupt mode by the input of the ring signal and the input of the key signal during the operation of the communication device, The first step of determining whether the ring signal input mode or the key signal input mode, and if the redial mode is set in the case of the ring signal input mode in the first step, the redial processing state is stored in the middle of a call and then restored when the call is completed. A second step of releasing the ring interrupt state and releasing the interrupt state as soon as the call is completed if the redial mode is reset, and in the case of the dial signal input in the key signal input mode in the first step. A third step of releasing the key interruption state after outputting the telephone number if the hook is in the off state, and releasing the key interruption state if the hook of the telephone line is in the on state; In case of input of the key interrupt after saving the speaker on / off state according to the speaker switch control signal and the hook on / off control signal. In the fourth process of releasing the state, and the redial key is input to the key signal input mode in the first process, if the redial key is on, the redial mode is set and the key interrupt state is released. And if the redial mode is set and the redial mode is set, the redial mode is set. When the redial mode is set, the redial mode is performed. The method of claim 3, In the fifth process, the first step of checking the redial mode state stored in the memory to perform the redial mode and, if the redial mode is set in the first step, checks the state of the speaker to turn off the speaker. A second step of re-checking the redial mode state, a third step of detecting a tone signal output from a telephone line if the redial mode is set in the second step, and a dial tone is detected in the third step Outputs the dial number and detects the tone signal once again, and if a call tone is detected in the fourth step, calls the other party through a speakerphone or handset, resets the redial mode, and detects busy tone. And a fifth step of sequentially performing the second step or less.