KR20150050240A - Terminal Equipment and Call control method for mVoIP, and Call service system based Internet Protocol - Google Patents

Abstract

The present invention relates to a terminal device for an internet protocol-based call service, a call arrival alarm providing method thereof, and an internet protocol-based call service system, which may stably provide a call arrival alarm signal regardless of the kind of operating system of the terminal device. The present invention executes a multimedia playback application, if a call arrival request occurs when a call application processing the internet protocol-based call service is operated as a foreground, to output a call arrival alarm signal and generates the call arrival signal via local notification if the call arrival request occurs in a state that the call application is switched to a background, thereby stably providing the call arrival alarm regardless of the kind of operating system of the terminal device.

Description

Technical Field [0001] The present invention relates to a terminal apparatus for an Internet protocol based call service, a method of providing the incoming alarm, and a call service system based on the Internet protocol,

The present invention relates to an internet protocol based call service, and more particularly, to an Internet protocol based call service in which a call application generates an incoming alarm signal through a local notification function when an incoming call request is generated in the background, A terminal apparatus for an internet protocol based call service and an incoming alarm providing method thereof, and an internet protocol based call service system.

Voice over Internet Protocol (VoIP) is a technology for converting voice and video into digital packets in real time through a communication network using an IP address, such as the Internet used for data communication, and is generally called 'Internet telephone'. Such an Internet telephone has an advantage in that it can provide various services linked to the Internet by exchanging voice and call images between callers using the Internet network.

In addition, as the performance of the mobile communication network technology and the mobile communication terminal have been developed recently, the VoIP technology has been applied to mobile terminals such as mobile phones and smart phones. VoIP technology applied to mobile terminals is mVoIP (Mobile VoIP) .

Unlike a mobile phone that connects terminals for communication according to a mobile communication standard through an existing mobile communication network, mVoIP uses a wireless mobile Internet such as a Wi-Fi network and a 3G network to transmit voice and video in packet form .

Since mVoIP is performed through the IP network, packets related to voice or call processing messages are transmitted according to the TCP (Transmission Control Protocol), and multimedia sessions for calls are performed based on SIP (Session Initiation Protocol) do.

In addition, a variety of applications are being developed as smartphones, which provide advanced functions such as PCs and provide a standardized interface and platform for application developers, have been activated recently.

In addition to being able to access the Internet directly using the wireless Internet, such a smartphone can be accessed in various ways using various browsing programs, and it is possible to directly create an application desired by the user, And it has a variety of advantages that conventional feature phones do not have, such as the ability to share applications between smartphones with the same operating system.

Accordingly, Internet protocol based call service is also provided in various application forms by various service providers.

In the case of an application for the internet protocol based call service (hereinafter referred to as a call application), it is possible to interoperate with various applications installed in the terminal device. In particular, a ring tone (hereinafter referred to as an incoming alarm signal) The multimedia playback application (AVplayer) included in the terminal device.

However, in some smartphone operating systems currently used, when the application is in a background state, the multimedia playback application can not be called, and the incoming alarm signal is normally provided according to the execution state of the communication application I can not.

Korean Registered Patent No. 10-0895283, April 21, 2009 (Name: Mobile VoIP Service Providing Device and Call Connection Method)

Accordingly, it is an object of the present invention to provide a terminal device for an Internet protocol based call service, an incoming alarm providing method thereof, and an Internet protocol based call service system capable of stably providing an incoming alarm signal regardless of the operating system of the terminal device do.

In particular, according to the present invention, when a call application requests a call in the background, an incoming alarm signal is generated through a Local Notification function to provide an incoming alarm stably regardless of the operating system type of the terminal device A terminal apparatus for an internet protocol based call service, an incoming alarm providing method thereof, and an internet protocol based call service system.

As a means for solving the above-mentioned problems, the present invention provides a communication system comprising: a communication unit connected to a communication network and transmitting and receiving a call control message and call data for an Internet protocol based call; A storage unit for storing at least one application including a call application for processing a call function based on the Internet protocol and a multimedia playback application for playing back audio and video; When a call control message for requesting an incoming call is received from another terminal device through the communication unit, it is checked whether the call application is running in the foreground. If the call application is not running in the foreground, a local notification function And a controller for controlling the terminal to output an incoming alarm signal for the user.

In the terminal device according to the present invention, when the communication application is executed in the foreground, the control unit can execute the multimedia reproduction application and control the incoming alarm signal to be outputted through the multimedia reproduction application.

In addition, in the terminal device according to the present invention, when the call application is executed in the foreground while the incoming alarm signal is being outputted through the local notification function, the control section can stop the output of the incoming alarm signal through the local notification function .

Here, the incoming alarm signal output through the local notification function may be set the same as the incoming alarm signal output through the multimedia reproduction application.

In addition, the terminal device according to the present invention includes: an audio processing unit for outputting an incoming alarm signal as an audible sound; And a display unit for outputting an incoming alarm signal in the form of a message.

In addition, according to another aspect of the present invention, there is provided a call control apparatus for controlling call connection based on an Internet protocol between a plurality of terminal apparatuses; And a call application for executing a call service based on the Internet protocol in cooperation with the call control device. When a call control message for requesting a call from another terminal device is received through the call control device, the call application is executed in the foreground And outputting an incoming alarm signal for the user through the local notification function when the terminal is not running in the foreground.

Further, the present invention provides, as yet another solution to the above-mentioned problem, that when a terminal device receives a call control message requesting an incoming call from another terminal device, it confirms whether a call application to process the incoming request is running in the foreground step; And outputting an incoming alarm signal for the user through the local notification function if the call application is not running in the foreground. [0012] According to another aspect of the present invention, there is provided an incoming alarm providing method for an Internet protocol based call service.

The method for providing an incoming alarm for an Internet Protocol based call service according to the present invention further includes the step of executing a multimedia playback application when the call application is running in the foreground and outputting an incoming alarm signal through the multimedia playback application .

The method further includes confirming whether the call application is switched to the foreground during the output of the incoming alarm signal through the local notification function. According to another aspect of the present invention,

When switched to foreground, the step of outputting the incoming alarm signal through the multimedia playback application may be performed.

In addition, when the confirmation result indicates that the call application is switched to the foreground, the step of stopping the output of the incoming alarm signal through the local notification function may further include stopping the output of the incoming alarm signal.

In addition, the present invention provides a computer readable recording medium on which a program for executing the above-described method for providing an incoming alarm for an Internet protocol based call service is recorded.

In the present invention, when a call request transmitted from another terminal device is received, it is checked whether the call application providing the call service based on the Internet protocol in cooperation with the call control device is operating in the foreground. If the call application is not operating in the foreground In particular, when the mobile terminal is operating in the background, an incoming alarm signal is output by using the local notification function, so that the incoming alarm signal can be stably provided regardless of the type of the operating system of the terminal device.

In particular, when the call application has priority over other processes, that is, when the execution screen of the call application is displayed and in a foreground state in which the user can interact with the user, When the communication application is switched to the background and the multimedia reproduction application can not be used, the local alarm function (Local Notification) managed by the operating system of the terminal device is used to transmit the incoming alarm signal So that it is possible to stably provide the incoming alarm signal irrespective of the operating state of the communication application.

In addition, when the call application is activated by the user while the incoming alarm signal is being outputted through the local notification function, and the alarm application is switched to the foreground again, the output of the incoming alarm signal through the local notification function is stopped, The incoming alarm signal can be continuously output through the application.

1 is a block diagram illustrating an Internet protocol based call service system according to the present invention.
2 is a flowchart illustrating a call process in an Internet protocol based call service system according to the present invention.
3 is a block diagram illustrating a configuration of a terminal device for an Internet protocol based call service according to the present invention.
4 is a flowchart illustrating a method of providing an incoming alarm for an Internet protocol based call service in a terminal device according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

First, an internet protocol based call service system according to an embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a block diagram illustrating an Internet protocol based call service system according to the present invention. Referring to FIG. 1, a plurality of terminal devices 100, a call control device, a call control device, (200) and a communication network (300).

The terminal device 100 is a terminal device used by a user including a caller and a called party for an Internet protocol based call service and is connected to the communication network 300 and communicates with the call control device 200 and other terminal devices 100 And any information processing apparatus having a function of processing voice and / or image can be used. For example, the plurality of terminal devices 100 may be a tablet PC, a laptop, a personal computer (PC), a smart phone, a personal digital assistant (PDA) A digital assistant, a smart TV, a mobile communication terminal, or the like.

In the present invention, the terminal device 100 performs call processing and media session connection for call connection with other terminal devices through the call control device 200, processes voice and / or video signals, and transmits / Thereby providing an Internet protocol based call service.

More specifically, the terminal device 100 accesses the call control device 200 and registers its location based on the IP address. The terminal device 100 transmits a call request to another terminal device through the call control device 200 in response to a call request of the user.

In addition, the terminal apparatus 100 can receive a call reception request from another terminal apparatus through the call control apparatus 200, and can receive at least one of visual, auditory, And outputs an incoming alarm signal that can be recognized by an included sense. Then, according to the operation of the user who has recognized the incoming alarm signal, the terminal device 100 accepts or rejects the incoming call request through the call control device 200. [

In addition, the terminal device 100 connects a media session for transmitting voice and / or video to another terminal device after transmitting a call request or receiving a call request, and transmits the voice and / or image of the user as a digital packet And transmits the digital packet to the media session. The digital packet transmitted from the other terminal device through the media session is received and restored to the voice and / or image of the other party, thereby enabling real-time communication between the user and the other party.

To this end, the terminal device 100 according to the present invention may include one or more applications programmed to perform the above-described processes. For example, the one or more applications may comprise routines for performing call processing and media session connections, routines for decoding or encoding audio and / or video, data corresponding to audio and / or video in real time multimedia packets A routine for transmitting / receiving a packet according to a transmission protocol of the communication network 300, and a routine for implementing a user interface for controlling on / off and on-the-call. An application that includes one or more of the routines described below is referred to as a call application.

Such a call application operates based on the operating system of the terminal device 100. For example, the call application may play an audio file designated by a multimedia playback application that performs playback of another program, for example, video and audio, through the operating system when an incoming request is generated, and output an incoming alarm signal have.

At this time, the terminal device 100 according to the present invention confirms whether the call application is operating in the foreground when receiving an incoming call request from another terminal device and outputting an incoming alarm signal.

Here, foreground means that a process executes with priority over other processes in a multiprocess environment. The fact that the call application is operating in the foreground means that the execution screen of the call application is displayed, ≪ / RTI > That is, the call application loads a playback object (e.g., AVplayer instance) capable of playing the incoming alarm signal on the basis of the operating system of the terminal device 100, and outputs the incoming alarm signal through the playback object . Here, the playback object is a program having an audio playback function. Hereinafter, the playback object capable of playing back the incoming alert signal will be referred to as a multimedia playback application.

Accordingly, when the call application is operating in the foreground, the terminal device 100 according to the present invention loads the playback object into the memory via the operating system and transmits the incoming alarm signal .

On the other hand, the call application may operate in the background, not the foreground, due to the execution of other applications. When the call application is executed in the background, it has a lower priority than the application located in the foreground, so that it may happen that the incoming alarm signal can not be reproduced as in the case of operating in the foreground.

If the call application is not operating in the foreground, that is, switched to the background, the terminal device 100 transmits a local notification function (Local Notification).

The local notification function is provided to perform a specific process by confirming occurrence of a specific event in the terminal device 100. When a condition where a local notification occurs and an alarm sound and a display string at the time of local notification are registered , And outputs the designated alarm sound and character string when an event corresponding to the condition is generated. This local notification function is managed by the operating system of the terminal device 100. When the incoming alarm signal output upon occurrence of the incoming call request is registered through the local notification function, even if the call application is operating in the background, It is possible to output the incoming alarm signal.

The provision of the incoming alarm for the internet protocol based call service according to the present invention will be described in more detail later.

Next, the call control apparatus 200 supports call processing and media session control together with management of a plurality of terminal apparatuses 100 using the Internet protocol based call service.

Specifically, a plurality of call control apparatuses 200 perform a registration procedure in response to a request from a plurality of terminal apparatuses 100, and send call control messages for call connection and termination among the plurality of registered terminal apparatuses 100 And manages the call service status of each of the plurality of terminal devices 100 accordingly.

1, the communication network 300 is a communication medium that supports data transmission / reception between the plurality of terminal devices 100, the call control device 200, and a plurality of terminal devices 100. The communication network 300 includes a wired network or a wireless network Or a combination thereof. In particular, the communication network 300 may include a wireless network such as a Wi-Fi network, a 2G or a 3G mobile communication network, and may be connected to the plurality of terminal devices 100 through the wireless network.

The Internet protocol based call service process through the interworking of the terminal device 100 and the call control device 200 will be described in more detail as follows.

In the Internet protocol based call service according to the present invention, the terminal apparatus 100 transmits and receives a call control message for ending a call connection, a call connection, and a call connection with the call control apparatus 200, Processing and media session connection and release. At this time, call processing can be performed using SIP.

A call processing procedure for an internet protocol based call service according to the present invention will be described with reference to FIG. In order to facilitate understanding, in the following embodiments, a calling terminal apparatus that transmits a calling request is referred to as a first terminal apparatus 100a, and a calling terminal apparatus that receives a calling request is referred to as a second terminal apparatus 100b do.

The first and second terminal devices 100a and 100b access the call control device 200 before the call connection is established and register a location by transmitting a registration message (SIP Registration) And the call control apparatus 200 controls the call service between the first and second terminal devices 100a and 100b based on the registration information.

In this state, when a user of the first terminal device 100a requests a call, the first terminal device 100a transmits a call request (SIP INVITE) together with caller information (caller ID, caller identification information, To the call control apparatus 200, and waits for a response to the origination request (S105).

As described above, the call control device 200, which has received the origination request from any terminal device, that is, the first terminal device 100a, confirms the destination terminal device on the basis of the registration information, And transmits an incoming call request (SIP INVITE) to the terminal device 100b (S110).

In this way, the terminal device 100 receiving the call reception request (SIP INVITE) from the call control apparatus 200 outputs the incoming alarm signal to the user (S115) and accepts the incoming call according to the user's accepted call And transmits a response message to the first terminal device 100a through the call control apparatus 200 (S120, S125).

Then, a media session for transmitting and receiving a packet corresponding to a voice and / or an image is connected between the first and second terminal devices 100a and 100b (S130).

The first and second terminal devices 100a and 100b convert the voice and / or image of the user into packets, transmit the packet to the counterpart terminal device via the media session, and transmit And reproduces and outputs the packet as a voice and / or an image, thereby providing a real-time communication between users (S135).

In addition, the terminal device 100 transmits a call termination request (SIP BYE) dmf to the counterpart terminal device via the call control device 200 in response to a request from the calling party or the called party during a call, (SIP 200 OK), the media session can be released.

The present invention relates to the process of step S115 of outputting an incoming alarm signal during the call processing described above, and more specifically, a method of providing an incoming alarm in the terminal device 100 will be described in detail with reference to FIGS. 3 and 4 .

3 is a block diagram illustrating a configuration of a terminal apparatus 100 for an Internet protocol based call service according to the present invention. 3 is a configuration diagram of a terminal device 100 based on a hardware structure.

3, the terminal device 100 may include a communication unit 110, an input unit 120, a display unit 130, an audio processing unit 140, and a storage unit 150, The Internet protocol based call service according to the present invention can be provided.

First, the communication unit 110 is configured to connect to the communication network 300 and transmit and receive data through the communication network 300. [ The configuration and operation of the communication unit 110 differ depending on the structure of the communication network 300 and the communication protocol. For example, the communication unit 110 may include at least one of various mobile communication systems such as 1G, 2G, and 3G systems, and a communication module that supports either a wire communication system or a wireless communication system such as Wi-Fi. In addition, when the communication network 300 includes a wireless network such as a mobile communication network or a Wi-Fi network, the communication unit 110 receives a wireless channel from the communication network 300, 300 to perform data transmission / reception. In particular, the communication unit 110 is allocated an arbitrary IP address (fixed IP or private IP) through the IP-based communication network 300, and performs data transmission / reception based on the allocated IP address.

The communication unit 110 transmits and receives a call control message for a call service based on the Internet protocol through the connected communication network 300 while being connected to the communication network 300. In addition, The user can receive the call data of the user or receive the call data of the other party. Here, the call data refers to voice data in the case of a voice call, and may mean voice data and image data in the case of a video call.

The input unit 120 is a means for generating a user input signal for a specific function performed on the terminal device 100 or the terminal device 100. The input unit 120 receives a number or various character information, And input keys and function keys for controlling the function of the mobile terminal 100. [ The input unit 120 may be formed of various types of input means such as a keyboard, a keypad, a mouse, and a motion sensor. When the terminal device 100 is manufactured as a touch screen, Key, a separate hot key, a shortcut key, and the like. In the present invention, the input unit 120 includes input means associated with a call service, such as a user requesting a call, accepting a requested call, or requesting termination of a call. The user can instruct the outgoing call through the input unit 120, accept or reject the incoming call, and instruct the call termination.

The display unit 130 is an output means for displaying an operation state and an operation result of the terminal device 100 or providing predetermined information to a user and outputs various types of menus as well as information input by the user or information provided to the user . In particular, the display unit 130 displays various user interface screens according to the operation state of the terminal device 100. For example, at the time of executing the call function, the outgoing user interface screen, incoming user interface screen, in-call user interface screen, and inquiry user interface screen are displayed. Particularly, in the present invention, the display unit 130 can output a character string indicating the incoming call request.

The display unit 130 may be formed in the form of a flat panel display panel such as a liquid crystal display (OLED) or an organic light emitting diode (OLED). In addition, the display unit 131 can be manufactured in a structure including a display panel and a touch panel according to a manufacturing form.

The audio processing unit 140 is connected to an audible sound recognition unit such as a microphone (MIC) and a speaker (SPK) or an audible sound output unit to convert the recognized voice into voice data and provide the voice data to the control unit 160, To be output as an audible sound. In particular, the audio processing unit 140 can output the voice of the other party processed by the control unit 160 during the call service or recognize the voice of the user.

The storage unit 150 stores programs and data required for the operation of the terminal device 100 and data generated as a result of the operation, and may include a program area and a data area. The storage unit 150 may store OS (Operating System) programs of the terminal apparatus 100 and various other applications. In particular, in the present invention, the OS program may be an open OS program providing an OPEN API and a platform for an application program developer, and may include, for example, Apple's iOS, Google's Android and the like. The storage unit 150 is a variety of applications. The storage unit 150 includes a call application 10 that operates based on the operating environment of the OS and performs an Internet protocol-based call service, a multimedia application that performs playback of audio and video, An application 20 may be included.

The control unit 160 controls the overall operation of the terminal device 100. Basically, the control unit 160 executes an OS program stored in the storage unit 150, establishes an execution environment in which various applications can be executed, and executes a specific application Or functions. In particular, the control unit 160 may execute the call application 10 according to the request of the user, and may provide the Internet-based call service according to the algorithm of the call application 10.

In particular, in the present invention, when the control unit 160 performs an Internet protocol based call service in conjunction with the call control apparatus 200 through the call application 10, the call request transmitted from the call control apparatus 200 If it is received, it checks whether the communication application 10 is operating, that is, whether it is operating in foreground or background. When the control unit 160 is operating in the foreground, the control unit 160 reproduces the audio file designated for the incoming alarm through the multimedia reproduction application 20 capable of reproducing the audio file, outputs the incoming alarm signal, If it is in operation, it outputs the audio file stored for the incoming alarm through the local notification function, while informing that the incoming request has been received via the local notification function.

Accordingly, the terminal device 100 according to the present invention can stably output the incoming alarm signal through the local notification function even when the operating system can not support multitasking.

The process of providing an incoming alarm in the Internet protocol based call service according to the present invention will be described in detail with reference to the flowchart of FIG.

In the Internet protocol based call service system according to the present invention, an arbitrary terminal device 100 can receive an incoming call request from another terminal device through a call processing process as shown in FIG. 2 (S205). Here, the incoming request may be received in a SIP-based call control message (e.g., SIP INVITE).

In order to output the incoming alarm signal to the user, the terminal device 100 having received the call control message requesting the reception of the call from another terminal device first transmits the call application 10 for processing the incoming call request to the foreground It is checked whether the program is being executed (S210).

The control unit 160 of the terminal device 100 executes the multimedia playback application 200 in accordance with the algorithm of the communication application 10 so that the incoming alarm And outputs the incoming alarm signal (S230). At this time, the call application 10 running in the foreground may interact with the user through the display unit 130 and the input unit 120. [ Accordingly, the control unit 160 transmits a caller ID (including one of the caller ID, caller name, and caller's telephone number) and a character string indicating that the call is received through the display unit 130 in accordance with the algorithm of the call application 10 And further allows the user to accept or reject the incoming request by further outputting a button allowing the user to accept or reject the incoming call.

On the other hand, if it is determined in step S210 that the call application 10 is not running in the foreground, for example, when another application is executed and the call application 10 is switched to the background mode, 160 outputs an incoming alarm signal for the user through a Local Notification function (S215). That is, when an incoming call request is received, it is registered to output the audio designated for the incoming alarm, and the local notification function managed by the operating system is activated to output the incoming alarm signal including the audio and the character string for the designated incoming alarm.

In addition, while the incoming alarm signal is being output through the local notification function, the user who recognizes the incoming alarm signal can be activated again to switch to the foreground.

Accordingly, the control unit 160 of the terminal device 100 confirms whether or not the call application 10 is switched to the foreground during the output of the incoming alarm signal through the local notification function (S220) When the call application 10 is switched to the foreground, the output of the incoming alarm signal through the local notification function is stopped (S225). This can be done by removing or stopping the corresponding local notification function.

Thereafter, the control unit 160 of the terminal device 100 executes the multimedia reproduction application 20 to reproduce the audio file designated for the incoming alarm according to the algorithm of the conversation application 10 switched to the foreground, (S230). Here, the incoming alarm signal output through the local notification function and the incoming alarm signal output through the multimedia playback application 20 are set to the same audio file, and the interruption timing of the incoming alarm signal through the local notification function, The user can recognize that the same incoming alarm signal is continuously output by minimizing the time difference between the output time of the incoming alarm signal through the communication line 20.

At this time, as described above, the call application 10 running in the foreground can interact with the user through the display unit 130 and the input unit 120. [ Accordingly, the control unit 160 transmits a caller ID (including one of the caller ID, caller name, and caller's telephone number) and a character string indicating that the call is received through the display unit 130 in accordance with the algorithm of the call application 10 In addition, the user can accept or reject the incoming request by outputting more buttons that the user can accept or reject the incoming call.

The method for providing an incoming call alert for an Internet protocol based call service according to the present invention may be implemented in a form of software readable by various computer means and recorded on a computer readable recording medium. Here, the recording medium may include program commands, data files, data structures, and the like, alone or in combination. Program instructions to be recorded on a recording medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. For example, the recording medium may be an optical recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, a compact disk read only memory (CD-ROM), a digital video disk (DVD) Includes a hardware device that is specially configured to store and execute program instructions such as a magneto-optical medium such as a floppy disk and a ROM, a random access memory (RAM), a flash memory, do. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like. Such a hardware device may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

A processor mounted on the call control device 200 or the terminal device 100 according to the present invention can process program instructions for executing the method according to the present invention. In one implementation, the processor may be a single-threaded processor, and in other embodiments, the processor may be a multithreaded processor. Further, the processor is capable of processing instructions stored on a memory or storage device. And, the call control device 200 or the terminal device 100 can be driven by an instruction to cause one or more processors to perform the above-described functions and processes. Such instructions may include, for example, interpreted instructions such as script commands, such as JavaScript or ECMAScript commands, or other instructions stored in executable code or computer readable media. Further, the apparatus according to the present invention may be implemented in a distributed manner over a communication network, such as a server farm, or may be implemented in a single computer device.

Although the present specification and drawings describe exemplary device configurations, the functional operations and subject matter implementations described herein may be embodied in other types of digital electronic circuitry, or alternatively, of the structures disclosed herein and their structural equivalents May be embodied in computer software, firmware, or hardware, including, or in combination with, one or more of the foregoing. Implementations of the subject matter described herein may be embodied in one or more computer program products, i. E. One for computer program instructions encoded on a program storage medium of the type for < RTI ID = 0.0 & And can be implemented as a module as described above. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects the machine readable propagation type signal, or a combination of one or more of the foregoing.

While the specification contains a number of specific implementation details, they should not be construed as limiting on the scope of any invention or claim, but rather on a description of features that may be specific to a particular embodiment of a particular invention . Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

Likewise, although the operations are depicted in the drawings in a particular order, it should be understood that such operations must be performed in that particular order or sequential order shown to achieve the desired result, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

The foregoing description provides examples to illustrate the invention and to enable those skilled in the art to make and use the invention. The written description is not intended to limit the invention to the specific terminology presented. Thus, while the present invention has been described in detail with reference to the above examples, those skilled in the art will be able to make adaptations, modifications, and variations on these examples without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited by the described embodiments but should be defined by the claims.

In the present invention, when a call request transmitted from another terminal device is received, it is checked whether the call application providing the call service based on the Internet protocol in cooperation with the call control device is operating in the foreground. If the call application is not operating in the foreground In particular, when the mobile terminal is operating in the background, an incoming alarm signal is output by using the local notification function, so that the incoming alarm signal can be stably provided regardless of the type of the operating system of the terminal device.

In particular, when the call application has priority over other processes, that is, when the execution screen of the call application is displayed and in a foreground state in which the user can interact with the user, When the communication application is switched to the background and the multimedia reproduction application can not be used, the local alarm function (Local Notification) managed by the operating system of the terminal device is used to transmit the incoming alarm signal So that it is possible to stably provide the incoming alarm signal irrespective of the operating state of the communication application.

In addition, when the call application is activated by the user while the incoming alarm signal is being outputted through the local notification function, and the alarm application is switched to the foreground again, the output of the incoming alarm signal through the local notification function is stopped, The incoming alarm signal can be continuously output through the application.

100: terminal device 110:
120: input unit 130: display unit
140: audio processing unit 150:
160: control unit 200: call control device
300: Network

Claims (11)

A communication unit connected to a communication network and transmitting and receiving a call control message and call data for an Internet protocol based call; And
A storage unit for storing one or more applications including a call application for processing a call function based on the Internet protocol and a multimedia playback application for playing audio and video;
When receiving a call control message requesting a call from another terminal device through the communication unit, confirms whether the call application is running in the foreground, and if the call application is not running in the foreground, a local notification function (Local Notification) To output an incoming alarm signal for the user through the control unit;
And an Internet Protocol (IP) -based call service. The apparatus of claim 1, wherein the control unit
Wherein when the call application is executed in the foreground, the multimedia playback application is executed, and the incoming alarm signal is output through the multimedia playback application. The apparatus of claim 1, wherein the control unit
Wherein when the call application is executed in the foreground while outputting the incoming alarm signal through the local notification function, the output of the incoming alarm signal through the local notification function is stopped. Terminal device. The method according to claim 1,
Wherein the incoming alarm signal output through the local notification function is set to be the same as the incoming alarm signal output through the multimedia playback application. The method according to claim 1,
An audio processor for outputting the incoming alarm signal as an audible sound; And
And a display unit for outputting the incoming alarm signal in the form of a message. A call control device for controlling an Internet protocol based call connection among a plurality of terminal devices; And
And a call application for executing a call service based on the Internet protocol in cooperation with the call control apparatus. When a call control message requesting call reception from another terminal apparatus is received through the call control apparatus, And if it is not running in the foreground, outputting an incoming alarm signal for the user through a local notification function (Local Notification). When the terminal device receives the call control message requesting the call from another terminal device, confirming whether the call application to process the call request is in the foreground; And
If the call application is not running in the foreground, outputting an incoming alarm signal for the user via a Local Notification function (Local Notification)
The method of claim 1, further comprising: 8. The method of claim 7,
Outputting an incoming alarm signal through the multimedia playback application by executing the multimedia playback application if the call application is running in foreground;
Further comprising the steps of: receiving an Internet protocol-based call service; 9. The method of claim 8,
Further comprising the step of confirming whether the call application is switched to foreground while outputting the incoming alarm signal through the local notification function,
Wherein the step of outputting an incoming alarm signal through the multimedia playback application is performed when switching to the foreground. 10. The method of claim 9,
The method of claim 1, further comprising: stopping output of an incoming alarm signal through the local notification function upon switching to the call application foreground. A computer-readable recording medium recording a program for executing the method for providing an incoming alarm for the internet protocol based call service according to any one of claims 7 to 10.

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