KR100259135B1 - Automatic call forwarding device and control method - Google Patents

Abstract

PURPOSE: A call forwarding apparatus and a method for controlling the same are provided so that a portable phone user can receive a call, made to a user's house or office, through his portable phone when the left the house or office. CONSTITUTION: A connection part(3) connects the input and output of an exchange(1) and a generic telephone(2) is provided between the exchange(1) and the generic telephone(2). A signal generation part generating a call forwarding signal and a call forwarding release signal is connected to the connection part(3). A judgement part(5) to judge the loading/unloading status of a portable phone(6) is connected to the signal generation part(4). The judgement part(5) outputs a judgement signal about the loading and unloading status of the portable phone(6) to the signal generation part(4). An input/use switch(7) and an on/off switch(8) are connected to the signal generation part(4). The input/use switch(7) and an on/off switch(8) are used to input a call forwarding number and a call forwarding release number and to switch over the call forwarding function. The on/off switch(8) is used to enable or disable the whole system.

Description

Automatic call forwarding device and its control method

The present invention relates to an automatic call forwarding device, and more particularly to a call forwarding device associated with a mobile phone for mobile communication.

Conventionally, in order to receive a call coming from a home or an office with an external mobile communication mobile phone, a call forwarding service provided by KT is used. In this case, the user has to enter "* + 88 + called number + *" in advance to set up call forwarding, and must enter "# + 88 + *" in order to cancel the return. That is, in order to use the call forwarding service of the conventional Korean telecommunications, there was a need to input and cancel the call forwarding each time when going out.

In addition, by using the call forwarding function built in the phone itself, it was possible to talk to a telephone that was received at home or at home when going out. In this case, an external call is first made to the home or office, and the external call is automatically connected to a preset mobile phone unless the call is received until a certain number of rings are made. However, there is a problem that many callers hang up on the way because the external phone is not directly connected to the mobile phone, but is connected to the mobile phone after a certain number of telephone rings after being connected to the home or office phone first. .

The present invention is to solve the above problems, when the mobile phone user vacated the home or office to receive a call from the home or office without extra effort to receive calls from the outside to the mobile phone .

1 is a block diagram of an apparatus for call forwarding according to an embodiment of the present invention.

2 is a flowchart illustrating a call forwarding method according to the apparatus of FIG. 1.

3 is a block diagram of a microcontroller performing the flowchart of FIG. 2.

4 is a flowchart showing an interrupt routine for stopping operation.

Call forwarding device of the present invention for achieving the above object

A determination unit for determining a call forwarding and call forwarding cancel input, including a key input unit for controlling the operation of the system, a connection unit connecting the input / output of the exchange unit and the stationary telephone terminal between the switch and the stationary telephone terminal, and an output of the determination unit. Or a signal generator for outputting a call forwarding signal and a call forwarding cancel signal to the exchange according to the input of the key input unit.

The key input unit has an on / off switch for switching the entire system to be enabled or disabled, a usage mode for storing call forwarding and call forward release signals in the signal generator, and call forwarding and call forward cancel signals stored in the signal generator. It consists of an input / use switch to switch the usage mode to use.

Here, the determination unit determines whether the portable telephone terminal is detached from the charger to determine the incoming call transfer and incoming call cancel input.

The signal generator includes a microcontroller, the microcontroller for storing a call forwarding and call forwarding cancel signal, and a call forwarding or call forwarding cancellation signal stored in the storage according to the output of the determination unit to the connection unit. It includes a control unit for controlling to. Here, the control unit preferably has a predetermined grace time before transmitting the call forwarding and call forwarding cancel signal to the connection unit.

On the other hand, according to the call forwarding method of the present invention,

Inputting a call forwarding and call forwarding release signal, determining whether the mobile phone is detached from the charger, outputting a call forwarding signal to the exchange when the mobile phone is detached from the charger, and the mobile phone is seated on the charger If so, outputting a call forward release signal to the exchange. The method may further include an interrupt step of outputting a call forward release signal to the exchange and causing the call forward to be disabled.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a block diagram of an apparatus for call forwarding according to an embodiment of the present invention. As shown in Fig. 1, a connection part 3 for connecting the input / output of the switch 1 and the general telephone 2 is provided between the switch 1 and the general telephone 2, and the call forwarding signal is connected to the connection 3. And a signal generator 4 for generating a call forward release signal. This call forwarding and call forwarding cancel signal are generated depending on whether or not the mobile phone is detached from the charger for charging the mobile phone. That is, a call forwarding signal is generated when the mobile phone is detached from the charger, and a call forwarding cancel signal is generated when the mobile phone is seated in the charger.

The determination unit 5 for determining whether the mobile phone 6 is attached or detached is connected to the signal generator 4, and the determination unit 5 transmits a determination signal regarding whether the mobile phone 6 is detached or not. Output to 4). In addition, an input / use switch 7 and an on / off switch 8 are connected to the signal generator 4. The input / use switch 7 is used to switch the call forwarding number and the call forwarding release number and the call forwarding function, and the on / off switch 8 is used to enable or disable the entire system. use.

The operation of such a call forward device will be described as follows.

When the user detaches the cellular phone 6 from the charger, the determination unit 5 outputs the detachment signal of the cellular phone to the signal generating unit 4, and the signal generating unit 4 transmits and detaches the cellular phone 6 according to the detachment signal. A call forward signal "* + 88 + mobile phone number (for example, 018-234-5678) + *" is generated and sent to the exchange 1. Therefore, when a mobile phone user goes out with a mobile phone, a call to a general phone is automatically forwarded to a mobile phone number. In the present embodiment, the determination unit 5 is provided in the charger of the mobile phone.

On the other hand, when the mobile phone 6 is seated in the charger, the determination unit 5 detects this and outputs a seating signal to the signal generator 4, and according to the seating signal, "# + 88" Therefore, the line connected from the switch 1 is directly connected to a communication device such as the general telephone 2 through the connection portion 3, thereby bringing a normal telephone use state.

If the on / off switch 8 is set to the " off " state during the above operation, the signal generator 4 generates "# + 88 + * " to cancel the call forwarding function. Send to (1) to release the call forwarding state and disable the entire system.

2 is a flowchart illustrating a call forwarding method according to the call forwarding device of FIG.

As shown in Fig. 1, the call forwarding method of the embodiment according to the present invention is divided into an input step (I) and a use step (II).

First, in the input step (I), it is determined whether the user switches the input / use switch 7 to the input position, and when the user switches to the input position, the call forward and release number is set in the storage unit.

In the use step (II), it is determined whether the input / use switch 7 is switched to the use position, and if it is switched to the use position, it is determined whether the cellular phone is seated on the determination unit. At this time, when the cellular phone is detached from the determination unit, a call forwarding signal is generated, and when the cellular phone is seated in the determination unit, a call forwarding cancel signal is generated.

2 is performed by a microcontroller included in the signal generator 4, and a block diagram of the microcontroller is shown in FIG. The above call forwarding method will be described in detail using the configuration of the microcontroller shown in FIG.

First, the user sets the on / off switch 8 to " on " and the telephone number (* + 88 + to be forwarded with the input / use switch 7 switched to the " input " position. Enter the phone number + *) and release number (# + 88 + *) using the keys of the standard telephone. Then, the call forwarding number and the release number are stored in the storage unit 42 of the microcontroller 40. In this embodiment, this storage section 42 is formed of EEPROM.

When the above input operation is completed, the input / use switch 7 is switched to the “use” position to perform the automatic call forwarding function.

Then, the controller 41 of the microcontroller scans the output of the determination unit 5 at a predetermined period and stores the output of the determination unit 5 in the register 44 through the buffer 43. Thereafter, the comparison unit 45 compares the output of the determination unit 5 to be scanned next with the contents previously scanned and stored in the register 44. Then, the control section 41 determines the comparison result, and if the comparison result is equal to or more than a predetermined number of times (for example, three or more times), the control section 41 determines whether the mobile phone is attached or detached according to the contents of the register at that time. In this case, when the mobile phone is detached from the determination unit 5, the call forwarding signal (* + 88 + mobile phone number + *) stored in the storage unit 42 is output to the exchanger 1 through the connection unit 3. When the mobile phone is seated on the determination unit 5, the release signal (# + 88 + *) stored in the storage unit 42 is output to the switch 1.

At this time, if the mobile phone is detached again and the comparison result of the comparison unit 45 is wrong (the moment when the mobile phone is detached and attached or vice versa), the control unit 41 again compares the comparison unit 45. Start counting and repeat the above operation.

Here, the control unit 41 preferably counts a predetermined time (several seconds to several tens of seconds) as a grace time before instructing the output of the call forward and release signals. Because the user can repeat the removal operation in a short time, it is advantageous to give a grace time to the use side or the load side of the exchange.

On the other hand, if the on / off switch 8 is in the " off " state while performing the above operation, the controller 41 causes the call forwarding release signal (# + 88 + *) to be output, as shown in FIG. Likewise, it executes an interrupt routine to stop operation.

Although the embodiment described above is based on a general telephone (using a Korean telecommunications exchange), it can be used in an office or the like using a private branch exchange.

In addition, in the present embodiment, it is determined whether the mobile phone is attached or detached by comparing the current output and the previous output of the determination unit, but other methods may be used.

As described above, according to the present invention, when the mobile phone user is away from home or office, the call is automatically forwarded to the user so that the mobile phone can receive a call from the outside without any trouble.

In addition, even when several people use the telephone in the home or office, the automatic call forwarding can be canceled as necessary, so that the problem of using a regular telephone in the state employing the apparatus of the present invention can be solved.

Claims (7)

An on / off switch that enables or disables the entire system; An input / use switch for switching a usage mode for storing the incoming call forwarding and the incoming call forwarding canceling signal in the signal generation unit and a usage mode for using the incoming call forwarding and the incoming call forwarding canceling signal stored in the signal generator; A connection portion for connecting the input / output of the switch and the fixed telephone terminal between the switch and the fixed telephone terminal; Determining unit for determining the call forwarding and call forwarding cancel input; And a signal generator for outputting a call forwarding signal and a call forwarding cancel signal to the exchange through the connection unit according to the output of the determination unit or the input of the input / use switch. In claim 1, And the determination unit determines whether the portable telephone terminal is detached from the charger. The method of claim 1 or 2, The signal generator includes a microcontroller, The micro-controller may include a storage unit for storing the call forwarding and call forwarding cancel signal, and a controller configured to output the call forwarding or call forwarding cancel signal stored in the storage unit to the connection unit according to the output of the determination unit. Call forwarding device comprising a. In claim 3, The microcontroller A register for storing the output of the determination unit, and a comparator for comparing the current output with the previous output of the determination unit, The control unit scans the output of the determination unit at a predetermined period and stores it in a register, and transmits the call forwarding and call forwarding cancel signal stored in the storage unit according to the current output of the determination unit when the output of the comparator is the same. Call forwarding device to transmit. In claim 4, And the control unit has a predetermined grace time before transmitting a call forwarding and call forwarding cancel signal to the connection unit. Inputting a call forwarding and call forwarding release signal; Determining whether the mobile phone is detached from the charger; Outputting the call forwarding signal to the exchange when the mobile phone is detached from the charger, and outputting the call forwarding cancel signal to the exchange when the mobile phone is seated on the charger. . In claim 6, And an interrupt step of outputting a call forward release signal to the exchange, the call forwarding being disabled.

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