KR100424615B1 - Method for switching call into base in the middle of call and releasing call in composite equipment including radio telephone and radio telephone - Google Patents

Abstract

PURPOSE: A method for switching a call into a base in the middle of a call and releasing a call in a composite equipment including radio telephone and a radio telephone is provided to easily switch a call mode state between a portable and a base into an exchange call state of the base. CONSTITUTION: A control unit judges whether a call request of a portable device exists(160). If so, the control unit searches for an idle channel(162). If so, the control unit selects a call channel and forms exchange access line loop(164). The control unit inspects whether a request for terminating a call to the portable exists(166). If so, the control unit releases the call channel and releases the exchange access line loop(168,178). The control unit inspects whether a call request for a base exists(170). If so, the control unit releases the call channel of the portable and forms call loop of the base(172,174). The control unit inspects whether a request for terminating a call to the base exists(176). If so, the control unit releases the exchange access line loop(178).

Description

A method for switching and releasing a call to a fixed device during a mobile device call in a mobile phone and a composite device having a wireless phone

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone and a multi-device equipped with a wireless telephone, and more particularly, to a forced call switching to a fixed device during a mobile device call and a call release method using the fixed device.

In the trunk line call state of the portable telephone apparatus, a call is made between the fixed apparatus and the portable apparatus by forming a trunk line loop in the fixed apparatus and transmitting and receiving a signal wirelessly between the fixed apparatus and the portable apparatus. However, in the conventional wireless phone, the mobile device is switched to the standby state due to a wireless failure or an error during the mobile device call, and the call is not formed even when the call button is pressed. Cases may occur. In such a case, since the power cord can be easily pulled out in a normal cordless telephone, the user cannot release the telephone. However, in the home automation, the power cord or the power switch is not exposed to the outside. Can not.

If the above problem occurs, the user of the wireless telephone must contact the service center to receive the A / S. Therefore, the inconvenience of not using the telephone and the burden of the company to perform the A / S are generated. There was a problem.

Accordingly, an object of the present invention is to provide a method for switching a call mode state between a portable device and a fixed device to a trunk line call state to a fixed device in a multi-device equipped with a wireless telephone and a wireless telephone.

Still another object of the present invention is to provide a method for terminating a trunk line call state by forcibly releasing a call mode state between a portable device and a fixed device in a multi-device equipped with a cordless phone and a cordless phone.

In the present invention for achieving the above object, in a composite device equipped with a wireless telephone and a wireless telephone,

In response to a call request to the fixed device during the mobile device call, the call channel of the mobile device is released in response to the call, and a trunk line call loop is formed to the fixed device. It is characterized by.

1 is a general block diagram of a base constituting a wireless telephone.

2 is a flow diagram of a call switching and release process to a fixed device during a mobile device call according to an embodiment of the present invention.

Hereinafter, an operation according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description and drawings, many specific details such as various key names and specific processing flows, such as command keys for fixed device call requests, command keys for fixed device call termination requests, and the like, are provided to provide a more comprehensive understanding of the present invention. Is shown. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 shows a general block diagram of a fixing device constituting a wireless telephone. Referring to FIG. 1, the control unit 110 controls the fixed device of the wireless telephone as a whole. When the call key signal is received from the mobile device or the flip switch is turned on, the control unit 110 controls the call loop to the mobile device. Form. In addition, the control unit 110 forms a call loop with the handset 144 of the fixing device when the hook switch 112 is detected to be hooked off, and when the input of any key is detected from the key input unit 140, the fixed unit is fixed. A call loop is formed by the speakerphone circuit 130 of the device. The hook switch 112 performs a function of forming or cutting a call loop by connecting and disconnecting the telephone line and the call circuit unit 114 under the control of the controller 110. Under the control of the controller 110, the call circuit unit 114 distributes and transmits the voice signal and various tone signals inputted from the telephone line to the corresponding parts. The RF transmitter / receiver 116 is connected to the call circuit unit 114 and transmits various tone signals and voice signals to the portable device of the wireless telephone. The DTMF generating unit 118 is connected between the call circuit unit 114 and the control unit 110, converts the digital data output from the control unit 110 into a DTMF (Dual Tone Multi-Frequency) signal to the call circuit unit ( 112). The tone detector 120 is connected between the call circuit unit 114 and the controller 110, detects various tone signals output from the call circuit unit 114, converts them into digital data, and outputs the digital data to the controller 110. . The VOX circuit 122 is connected between the call circuit unit 114 and the control unit 110, and detects the presence or absence of a voice signal in the phone call state and outputs it to the control unit 110. The cortec 124 is connected in parallel between the call circuit 114 and the RF transmitter / receiver 116 and converts an analog signal into digital data for easy signal processing and provides the digital signal to the digital signal processor 126 or the digital signal. The digital data output from the signal processing unit 126 is converted into an analog signal and output to the call circuit unit 114. The digital signal processing unit 126 synthesizes or analyzes the digital data input and output to the codec 124 under the control of the control unit 110 into an encoded signal. The voice storage unit 128 stores or reads the coded signal output from the digital signal processing unit 126. The speakerphone circuit 130 forms a speakerphone call loop by connecting the call circuit part 114, the microphone 132, and the speaker 134 when a speakerphone key is input or there is a key input in the automatic call mode. The microphone 132 converts a user's voice signal into an electrical signal in the speakerphone mode and outputs it to the speakerphone circuit 130. The speaker 134 converts an electrical signal input from the speaker phone circuit 130 into a voice signal and outputs the voice signal. The ring detector 136 is connected between the telephone line and the controller 110, and detects a ring signal input through the telephone line and provides the detected ring signal to the controller 110. The memory unit 138 stores function tables for servicing various functions provided by a wireless telephone and a control program according to an embodiment of the present invention, so that the stored data can be maintained for a predetermined time even when the power supply is interrupted. Use EEPROM. The key input unit 140 includes a call release key and a plurality of keys according to an embodiment of the present invention, and provides the control unit 110 with key data generated according to the key operation. The display unit 142 displays data provided from the control unit 110. The handset 144 is connected to the call circuit 114, and reproduces or transmits a voice signal during a general phone call through the fixing device.

2 is a flowchart illustrating a call switching and call release processing flow to a fixed device during a mobile device call according to an embodiment of the present invention. Hereinafter, a method for switching and releasing a call to a fixed device during a mobile device call will be described with reference to FIGS. 1 and 2.

First, in step 160, if there is a call request from the mobile device in step 160, the controller 110 proceeds to step 162 to search for the idle channel. If there is a pause channel as a result of the search, the controller 110 selects a call channel and proceeds to step 164 to form a trunk line call loop and proceeds to step 166. In step 166, the controller 110 checks whether there is a call termination request of the mobile device. If there is a call termination request, the controller 110 proceeds to step 168 to release the call channel and releases the CO line loop in step 178. However, if the end-of-call data transmitted from the mobile device is not received by the control unit 110 in the fixed device due to the interference of other wireless telephones or other obstacles in step 166, the fixed device forms a trunk line call loop and calls with the mobile device. The state of busy state is maintained by keeping the mode continuously. Hereinafter, a method for releasing the trunk line busy state will be described.

First, if there is no request for termination of the call of the portable device, the controller 110 checks whether there is a fixed device call request in step 170. In this case, the fixed device call request can be checked by pressing the CO line button twice or by providing a separate fixed device call request key. If there is a check request for the fixed device call, the controller 110 proceeds to step 172 to release the call channel of the portable device and proceeds to step 174 to form a call loop of the fixed device. Then, if there is a fixed device call termination request in step 176, the control unit 110 proceeds to step 178 to release the trunk line call loop, and then terminates the call switching to the fixed device and the call release method according to an embodiment of the present invention. . The fixed device call termination request may be checked by the number of pressing of the CO line button or by a separate function key input in the same manner as the fixed device call request.

As described above, the present invention has the advantage that the user of the wireless telephone can easily switch and release the call mode state between the portable device and the fixed device to the trunk line call state to the fixed device.

Claims (3)

In the composite device equipped with a cordless telephone and a cordless telephone, In response to a call request to the fixed device during the mobile device call, the call channel of the mobile device is released in response to the call, and a trunk line call loop is formed to the fixed device. Call transfer and call release method to a fixed device characterized in that. In the composite device equipped with a cordless telephone and a cordless telephone, Call transfer and call release method to a fixed device, characterized in that if there is a call release request during a mobile device call, the call channel of the mobile device is released and the trunk line call loop is automatically released. The method of claim 2, wherein the call release request is implemented by a key input of a call release key provided in a key input unit.