KR100707249B1 - Public telephone and method for dialing automatically - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a public telephone having an automatic dialing function and a method thereof.

2. The technical problem to be solved by the invention

According to the present invention, since a key signal is not input within a threshold time while the hook switch is turned off, the apparatus automatically enters a standby mode for dialing and automatically dials and connects to a pre-stored service telephone number. The purpose of the present invention is to provide a public telephone and a method having an automatic dialing function for accessing a service server to provide a service to a user.

3. Summary of Solution to Invention

A public telephone comprising: a hook switch for operating / detaching a handset to connect / disconnect with a telephone station; On / off detecting means for detecting on / off of the hook switch; Key input means for receiving a key signal (telephone number); Storage means for storing a service telephone number; Dialing means for transmitting a service telephone number stored in the storage means to a DTMF (Dial Tone Multi-Frequency) signal generating means under the control of a control means and dialing using the DTMF signal generated by the DTMF signal generating means; The DTMF signal generating means for generating a DTMF signal corresponding to the telephone number inputted from the key input means and the service telephone number received from the dialing means; And when the key signal is not input from the key input means within a threshold time in the state that the hook switch is turned off, the apparatus enters the call waiting mode and generates a DTMF signal corresponding to the service telephone number stored in the storage means. The control means for controlling the components to be dialed and connected, wherein the dialing means comprises three sub-input lines for receiving control signals from the control means and four sub-outputs for outputting telephone numbers. The control means has a line and outputs a signal having the same type as a signal generated from the key input means, synchronized with the scan signal generated by the control means without affecting the operation of the key input means, so that the control means dials the dialing means. The signal received through the means received via the key input means Recognizes the same signal as the signal, and provides automatic dialing without modifying the circuit or program.

4. Important uses of the invention

The present invention is used in public telephones and the like.

Payphone, hook switch, auto dialing, threshold time, DTMF signal

Description

Public telephone and method thereof with automatic dialing function             

1 is a configuration diagram of an embodiment of a public telephone having an automatic dialing function according to the present invention;

2 is a circuit diagram illustrating an example of a connection relationship between a dialing unit and a control unit according to the present invention;

3 is an exemplary view showing an output signal of a dialing unit according to the present invention;

4 is a flow chart of an embodiment of an automatic dialing method in a public telephone according to the present invention;

5 is a flowchart of another embodiment of an automatic dialing method in a public telephone according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: hook switch 12: on / off detection unit

13: key input unit 14: storage unit

15: dialing unit 16: DTMF signal generating unit

17: control unit

The present invention relates to a public telephone having an automatic dialing function and a method thereof, and more particularly, to automatically dial and connect to a pre-stored service telephone number after a threshold time with a hook switch off. A public telephone having a function and a method thereof are provided.

In the present invention, the off of the hook switch means a state in which the user lifts the handset for the call, that is, a state in which the handset is disconnected from the public telephone. It means attached state.

In an embodiment of the present invention will be described taking as an example 1541 which is a telephone number for receiving a toll free call service as a service telephone number.

In general, a public telephone is a telephone that provides a call service at a certain rate from a user, and is installed at major points throughout the country to provide a call service to many users.

The first payphone was a commercial payphone in the city, commercialized in 1962 and widely used until 1988. Since then, inter-city payphones (1978), direct street dialing (Direct Distance Dialing, 1983-present), which began in full swing in 1983, card payphones (1986-present), coin / card-use public phones Telephones (1995 to present), IC public telephones (1997 to present) that can use only IC (Integrated Circut) cards and credit cards have been developed to provide calling services to many users.

The public telephone does not provide a call service unless a certain fee is charged to the user except for an emergency call (usually a three-digit phone number). Therefore, the user must pay a certain rate to receive the call service.

To solve this inconvenience, KT (Korea Telecom) Linkus currently pays toll recipients and charges to the recipients by calling 1541 using a regular phone or pay phone. It provides call service.

Meanwhile, referring to a conventional method for providing a toll free call service in a public payphone, a user first operates a public phone in a call waiting mode (a state in which a handset of a public telephone handset outputs a call waiting sound indicating a call waiting state). After pressing the emergency button, if the call waiting sound is output, enter 1541 through the key button.

Then, the public telephone generates a DTMF signal corresponding to the received service telephone number 1541 and accesses the corresponding service server to provide a toll free call service to the user.

These conventional public telephones receive a key input (service telephone number) from the user and provide various additional services (for example, a toll free call service), so that the user forgets the telephone number for the additional service or is inexperienced in handling the device. In this case, there was a problem that various additional services are not provided.

The present invention has been proposed to solve the above problems, the key signal is not input within the threshold time in the state that the hook switch is off, enters the dialing standby mode and automatically dials to the service phone number stored in advance Accordingly, an object of the present invention is to provide a public telephone and a method having an automatic dialing function for automatically accessing a service server and providing a corresponding service to a user without a separate key input signal.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object comprises: a public telephone comprising: a hook switch for operating / detaching a handset to connect / disconnect with a telephone station; On / off detecting means for detecting on / off of the hook switch; Key input means for receiving a key signal (telephone number); Storage means for storing a service telephone number; Dialing means for transmitting a service telephone number stored in the storage means to a DTMF (Dial Tone Multi-Frequency) signal generating means under the control of a control means and dialing using the DTMF signal generated by the DTMF signal generating means; The DTMF signal generating means for generating a DTMF signal corresponding to the telephone number inputted from the key input means and the service telephone number received from the dialing means; And when the key signal is not input from the key input means within a threshold time in the state that the hook switch is turned off, the apparatus enters the call waiting mode and generates a DTMF signal corresponding to the service telephone number stored in the storage means. The control means for controlling the components to be dialed and connected, wherein the dialing means comprises three sub-input lines for receiving control signals from the control means and four sub-outputs for outputting telephone numbers. The control means has a line and outputs a signal having the same type as a signal generated from the key input means, synchronized with the scan signal generated by the control means without affecting the operation of the key input means, so that the control means dials The signal received through the means received via the key input means By recognizing the same signal as the signal, it is characterized in that to provide an automatic dialing function without modification of the circuit or program.

Another apparatus of the present invention is a public telephone, comprising: a hook switch for operating / detaching a handset to connect / disconnect with a telephone station; On / off detecting means for detecting on / off of the hook switch; Key input means for receiving a selection signal and a key signal (telephone number); Storage means for storing a plurality of service telephone numbers; Display means for displaying a service telephone number; Dialing means for transmitting a service telephone number stored in the storage means to a DTMF (Dial Tone Multi-Frequency) signal generating means under the control of a control means and dialing using the DTMF signal generated by the DTMF signal generating means; The DTMF signal generating means for generating a DTMF signal corresponding to the telephone number inputted from the key input means and the service telephone number received from the dialing means; And entering the standby mode as the key signal is not input from the key input means within a threshold time while the hook switch is turned off, and displaying a plurality of service telephone numbers stored in the storage means on the display means. And the control means for controlling each of the components to automatically dial and connect to generate a DTMF signal corresponding to the service telephone number selected through the key input means, wherein the dialing means is provided from the control means. It has three sub-input lines for receiving the control signal of and four sub-output lines for outputting the telephone number, and synchronized with the scan signal generated by the control means without affecting the operation of the key input means; By outputting a signal of the same type as the signal generated from the key input means, And control means to be recognized as the same signal and the signal received via the key input means, the signals received through said dialing means, characterized in that it provides an automatic dialing function, without modification of a circuit or a program.

On the other hand, the method of the present invention, the automatic dialing method in a public telephone, comprising the steps of: checking whether a key signal is input within a threshold time as the hook switch is turned off; A first signal generating step of generating a DTMF signal corresponding to the received key signal (telephone number) if a key signal is input within a threshold time as a result of the checking; A second signal generating step of generating a DTMF signal corresponding to a pre-stored service telephone number if a key signal is not input within a threshold time as a result of the checking; And a dialing step of dialing and connecting by using the generated DTMF signal, wherein the dialing step is synchronized with a scan signal generated by a control means without affecting the operation of the key input means. Outputs a signal of the same type as the generated signal, so that the control means recognizes the signal received through the dialing means as the same signal received through the key input means, automatic dialing function without modification of the circuit or program It characterized in that to provide.

In addition, another method of the present invention provides a method for automatic dialing in a public telephone, comprising: checking whether a key signal is input within a threshold time as a hook switch is turned off; A first signal generating step of generating a DTMF signal corresponding to the received key signal (telephone number) if a key signal is input within a threshold time as a result of the checking; A display step of displaying a stored service telephone number if a key signal is not input within a threshold time as a result of the checking; A second signal generation step of generating a DTMF signal corresponding to the service telephone number after receiving the selection signal after displaying the service telephone number; And a dialing step of dialing and connecting by using the generated DTMF signal, wherein the dialing step is synchronized with a scan signal generated by a control means without affecting the operation of the key input means. Outputs a signal of the same type as the generated signal, so that the control means recognizes the signal received through the dialing means as the same signal received through the key input means, automatic dialing function without modification of the circuit or program It characterized in that to provide.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of a public telephone having an automatic dialing function according to the present invention.

As shown in FIG. 1, a public telephone having an automatic dialing function according to the present invention includes a hook switch 11 and a hook switch 11 for connecting / disconnecting with a telephone station by operating by detaching a handset. On / off detection unit 12 for detecting the off, key input unit 13 for receiving the selection signal and key signal (telephone number), storage unit 14 for storing the service telephone number, control unit 17 The service telephone number stored in the storage unit 14 is transferred to a DTMF (Dial Tone Multi-Frequency) signal generator 16 under control of the control unit, and the DTMF signal generated by the DTMF signal generator 16 is used. DTMF signal generation unit 16 for generating a DTMF signal corresponding to a dialing unit 15 for dialing, a telephone number received from the key input unit 13, and a service telephone number received from the dialing unit 15; , The hook switch DTMF corresponding to the service telephone number stored in the storage unit 14 after entering the standby mode as the key signal is not input from the key input unit 13 within the threshold time in the state that 11 is off. And a controller 17 for controlling each of the above components to generate a signal and automatically dial and connect.

Here, the threshold time is, for example, about 5 to 7 seconds is preferable.

In addition, the hook switch 11 disconnects the connection with the telephone station when operating ON, and connects with the telephone station when operating OFF.

The storage unit 14 also stores at least one service telephone number.

On the other hand, the controller 17 enters the transmission standby mode as the key signal is not input from the key input unit 13 within a threshold time in the state that the hook switch 11 is off, and enters the storage unit 14. After displaying the stored service telephone number through a display unit (not shown in the drawing), generating a DTMF signal corresponding to the service telephone number selected through the key input unit 13 from the user, and automatically dialing and connecting the service telephone number. Each component can also be controlled.

2 is a circuit diagram illustrating an example of a connection relationship between a dialing unit and a controller according to the present invention.

As shown in Fig. 2, the dialing portion according to the present invention has three sub-input lines and four sub-output lines. At this time, the three sub-input lines (0, 1, 2) are lines for receiving the control signal from the controller 17, and the four sub-output lines (0, 1, 2, 3) to output the telephone number. For the line.

In addition, the dialing unit 15 is generated from the key input unit 13, synchronized with the scan signal generated by the control unit 17 without affecting the operation of the key input unit 13, as shown in FIG. Outputs the same type of signal as the signal. That is, the dialing unit 15 outputs a signal synchronized with the scan signal of the main outputs 0 to 2 of the control unit 17 through the sub outputs 0 to 3.

Accordingly, the controller 17 recognizes the signal input through the key input unit 13 and the signal input through the dialing unit 15 as the same signal, thereby providing an automatic dialing function without modifying a circuit or program of an existing public telephone. .

This can be seen through the following [Table 1] and [Table 2]. Here, L means low and H means high.

In more detail, first, [Table 1] shows the state of the signal input through the key input unit 13, and [Table 2] shows the state of the signal input through the dialing unit 15.

At this time, it can be seen that the operating states of the SW1 to SW12 and the sub outputs (0 to 3) of [Table 1] and the operating states of the SW1 to SW12 and the injection force (0 to 3) of [Table 2] are OPEN.

Further, it can be seen that the signal L when the SW12 and the injection force 3 in [Table 1] operate and the signal L when the SW1 and the sub-output 0 in [Table 2] operate are the same.

Further, it can be seen that the signal L when the SW11 and the injection force 3 in [Table 1] operate and the signal L when the SW2 and sub-output 0 in the [Table 2] operate are the same.

In addition, it can be seen that the signal L when the SW10 and the injection force 3 in Table 1 are operated and the signal L when the SW3 and the sub-output 0 in Table 2 are operated are the same.

In this way, it can be seen that the signal H when SW1 and injection force 3 in [Table 1] operate and the signal H when SW12 and sub-output 0 in [Table 2] operate are the same. have.

On the other hand, it can be seen that the signal H when the SW12 and the injection force 2 of [Table 1] operate and the signal H when the SW1 and the sub-output 1 of the [Table 2] operate are the same.

In addition, it can be seen that the signal H when the SW11 and the injection force 2 of [Table 1] operate and the signal H when the SW2 and the sub-output 1 of [Table 2] operate are the same.

In addition, it can be seen that the signal H when the SW10 and the injection force 2 of [Table 1] operate and the signal H when the SW3 and the sub output 1 of the [Table 2] operate are the same.

In this way, it can be seen that the signal H when SW1 and injection force 2 in [Table 1] operate and the signal H when SW12 and sub output 1 in [Table 2] operate are the same. .

As a result, it can be seen that the signal input through the key input unit 13 and the signal input through the dialing unit 15 are the same.

4 is a flowchart illustrating an embodiment of an automatic dialing method in a public telephone according to the present invention.

First, it is detected that the hook switch 11 is off (401).

Thereafter, it is checked whether a key signal is input through the key input unit 13 within a threshold time (402). That is, after detecting that the hook switch 11 is turned off, the time is counted to check whether a key signal (phone number) is input through the key input unit 13 within a preset threshold time. Here, the threshold time can be arbitrarily set / changed by the user.

As a result of the check 402, if a key signal is input through the key input unit 13 within a threshold time, the call is connected to the terminal corresponding to the received key signal (phone number) (403). That is, it provides a general call service.

As a result of the check 402, if a key signal is not input through the key input unit 13 within a threshold time, a DTMF signal corresponding to the service telephone number stored in the storage unit 14 is generated (404).

After that, dialing is performed using the generated DTMF signal (405).

Thereafter, the service is provided to the user as it is connected to the service server corresponding to the DTMF signal (406 and 407). Here, the service includes a toll call service.

5 is a flowchart of another embodiment of an automatic dialing method in a public telephone according to the present invention.

First, it is detected that the hook switch 11 is off (501).

Thereafter, it is checked whether a key signal is input through the key input unit 13 within a threshold time (502). That is, after detecting that the hook switch 11 is turned off, the time is counted to check whether a key signal (phone number) is input through the key input unit 13 within a preset threshold time. Here, the threshold time can be arbitrarily set / changed by the user.

As a result of the check 502, if a key signal is input through the key input unit 13 within a threshold time, the call is connected to the terminal corresponding to the input key signal (phone number) (503). That is, it provides a general call service.

As a result of the check 502, if a key signal is not input through the key input unit 13 within a threshold time, a plurality of service telephone numbers stored in the storage unit 14 are displayed through a display unit (not shown). Display 504.

Thereafter, in response to receiving the selection signal from the user through the key input unit 13, a DTMF signal corresponding to the service telephone number is generated (505 and 506).

Then, dialing is performed using the generated DTMF signal (507).

Thereafter, as the user accesses the service server corresponding to the DTMF signal, the corresponding service is provided to the user (508). Here, the service includes a toll call service.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

In the present invention as described above, as the key signal is not input within the threshold time in the state that the hook switch is off, after entering the standby mode for dialing by automatically dialing and accessing the service telephone number stored in advance, a separate key input There is an effect that can automatically connect to the service server without a signal and provide the service to the user.

In addition, according to the present invention, since the key signal is not input within a threshold time while the hook switch is turned off, the service telephone number selected by the user is displayed after entering a plurality of service telephone numbers stored in the call waiting mode. By automatically dialing and accessing the service, the service server is automatically connected to a service server without a separate key input signal, thereby providing a corresponding service to a user.

Claims (6)

In the payphone, A hook switch for operating by detaching the handset to connect / disconnect with the telephone station; On / off detecting means for detecting on / off of the hook switch; Key input means for receiving a key signal (telephone number); Storage means for storing a service telephone number; Dialing means for transmitting a service telephone number stored in the storage means to a DTMF (Dial Tone Multi-Frequency) signal generating means under the control of a control means and dialing using the DTMF signal generated by the DTMF signal generating means; The DTMF signal generating means for generating a DTMF signal corresponding to the telephone number inputted from the key input means and the service telephone number received from the dialing means; And As the key signal is not inputted from the key input means within a threshold time in the state that the hook switch is turned off, the apparatus enters an outgoing standby mode and generates a DTMF signal corresponding to the service telephone number stored in the storage means. Said control means for controlling said components to dial and connect, The dialing means, It has three sub-input lines for receiving the control signal from the control means and four sub-output lines for outputting the telephone number, and the scan signal generated by the control means without affecting the operation of the key input means; By outputting a signal of the same type as the signal generated from the key input means synchronized, the control means to recognize the signal received through the dialing means as the same signal received through the key input means, A public telephone having an automatic dialing function, characterized by providing an automatic dialing function without modifying a circuit or a program. In the payphone, A hook switch for operating by detaching the handset to connect / disconnect with the telephone station; On / off detecting means for detecting on / off of the hook switch; Key input means for receiving a selection signal and a key signal (telephone number); Storage means for storing a plurality of service telephone numbers; Display means for displaying a service telephone number; Dialing means for transmitting a service telephone number stored in the storage means to a DTMF (Dial Tone Multi-Frequency) signal generating means under the control of a control means and dialing using the DTMF signal generated by the DTMF signal generating means; The DTMF signal generating means for generating a DTMF signal corresponding to the telephone number inputted from the key input means and the service telephone number received from the dialing means; And After the hook switch is turned off, as a key signal is not input from the key input means within a threshold time, the apparatus enters the standby mode and displays a plurality of service telephone numbers stored in the storage means on the display means. And a control means for controlling each of the components to generate a DTMF signal corresponding to the service telephone number selected through the key input means and automatically dial and access the same. The dialing means, It has three sub-input lines for receiving the control signal from the control means and four sub-output lines for outputting the telephone number, and the scan signal generated by the control means without affecting the operation of the key input means; By outputting a signal of the same type as the signal generated from the key input means synchronized, the control means to recognize the signal received through the dialing means as the same signal received through the key input means, A public telephone having an automatic dialing function, characterized by providing an automatic dialing function without modifying a circuit or a program. The method according to claim 1 or 2, The service telephone number is A public telephone having an automatic dialing function, characterized in that the telephone number for receiving a toll free call service. In the automatic dialing method in a public telephone, Checking whether a key signal is input within a threshold time as the hook switch is turned off; A first signal generating step of generating a DTMF signal corresponding to the received key signal (telephone number) if a key signal is input within a threshold time as a result of the checking; A second signal generating step of generating a DTMF signal corresponding to a pre-stored service telephone number if a key signal is not input within a threshold time as a result of the checking; And A dialing step of dialing and connecting by using the generated DTMF signal, The dialing step, Outputs a signal of the same type as the signal generated from the key input means, synchronized with the scan signal generated by the control means without affecting the operation of the key input means, so that the control means receives the signal input through the dialing means. And recognizing the same signal as the signal input through the key input means, thereby providing an automatic dialing function without modifying a circuit or a program. In the automatic dialing method in a public telephone, Checking whether a key signal is input within a threshold time as the hook switch is turned off; A first signal generating step of generating a DTMF signal corresponding to the received key signal (telephone number) if a key signal is input within a threshold time as a result of the checking; A display step of displaying a stored service telephone number if a key signal is not input within a threshold time as a result of the checking; A second signal generation step of generating a DTMF signal corresponding to the service telephone number after receiving the selection signal after displaying the service telephone number; And A dialing step of dialing and connecting by using the generated DTMF signal, The dialing step, Outputs a signal of the same type as the signal generated from the key input means, synchronized with the scan signal generated by the control means without affecting the operation of the key input means, so that the control means receives the signal input through the dialing means. And recognizing the same signal as the signal input through the key input means, thereby providing an automatic dialing function without modifying a circuit or a program. The method according to claim 4 or 5, The service telephone number is An automatic dialing method in a public telephone, characterized in that the telephone number for receiving a toll free call service.

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