KR20090065106A - Mobile terminal and contents copyright protection method thereof - Google Patents

Abstract

A mobile terminal and a contents copyright protection method thereof are provided to protect a copyright of contents through limit time and watermark processing. A wireless communication unit(110) performs wireless communication with an external device. A memory(160) stores contents downloaded through the wireless communication unit, a copyright protection method and related information. When the contents are transmitted to the external device, a controller(180) transmits corresponding contents and related information according to a set copyright protection method. The controller reproduces the contents according to the related information.

Description

Mobile terminal and its contents copyright protection method {MOBILE TERMINAL AND CONTENTS COPYRIGHT PROTECTION METHOD THEREOF}

The present invention relates to a mobile terminal for transmitting copyright protection related information when forwarding a copyrighted content and a method for protecting the copyright of the content.

The mobile terminal may be configured to perform various functions. Examples of such various functions include data and voice communication functions, taking pictures or videos through a camera, storing voices, playing music files through a speaker system, and displaying images or videos. Some mobile terminals include additional functionality to play games, while others are implemented as multimedia devices. Moreover, recent mobile terminals can receive broadcast or multicast signals to watch video or television programs.

In addition, efforts to support and increase the function of the mobile terminal continue. The above efforts include not only changes and improvements in structural components forming the mobile terminal, but also improvements in software and hardware.

In addition, with the development of communication technology, a mobile terminal user can download and play various contents such as a photo, a video, a music file, and the like through the wireless Internet and other communication networks. Most of the contents downloaded by the mobile terminal are copyrighted, and such contents are prohibited from being copied or reproduced to other media or devices. Therefore, when a user transmits copyrighted content stored in his or her mobile terminal to another user's mobile terminal for recommendation to another user, the other user's mobile terminal cannot play the content.

The present invention is to provide a mobile terminal and a content copyright protection method for transmitting a copyright-protected content to another terminal also transmits copyright protection-related information.

In addition, the present invention is to provide a mobile terminal and a content copyright protection method for playing only a partial sample of the content or by inserting the copyright information based on the copyright protection related information when playing the copyrighted content.

The mobile terminal according to an embodiment of the present invention for realizing the above object is a wireless communication unit for performing wireless communication with an external device, a memory for storing the content downloaded through the wireless communication unit and the copyright protection scheme and related information set therein And a control unit for transmitting the content and related information according to a copyright protection scheme set in the content and playing the content according to the related information when the content is delivered to an external device.

Preferably, the copyright protection method includes a method of prohibiting any one or more of copying and playing, a method of limiting the playing time of the content, and a method of embedding a watermark in the content.

Preferably, the related information includes information such as a time limit for reproducing the content, a watermark to be inserted into the content, a copy prohibition, and a prohibition of reproduction.

The mobile terminal according to the present invention configured as described above transmits copyright protection related information such as a time limit and a watermark when transmitting a copyrighted content to another terminal.

In addition, when the mobile terminal according to the present invention downloads the copyright-protected content, the mobile terminal plays the content for a limited time or inserts copyright information into the content as a watermark so that the content is output when the content is reproduced.

Therefore, the present invention protects the copyright of the content through the time limit and the watermark processing, and can freely reproduce the sample of the content. In addition, the operator or the content provider may select a desired copyright protection method for each content.

Hereinafter, a mobile terminal related to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal can be implemented in various forms. For example, the mobile terminal described herein includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, and the like. have.

The illustrated mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, The interface unit 170 may include a controller 180, a power supply unit 190, and the like. 1 shows a mobile terminal having various components. However, not all illustrated components are essential components. The mobile terminal may be implemented by more components than the illustrated components, and the mobile terminal may be implemented by fewer components.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more components for wireless communication between the mobile terminal 100 and the wireless communication system or wireless communication between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and in this case, may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link (MediaFLO). Digital broadcast signals can be received using digital broadcasting systems such as only), digital video broadcast-handheld (DVB-H), integrated services digital broadcast-terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all broadcast systems providing broadcast signals as well as the digital broadcast system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

In addition, the mobile communication module 112 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access, and the wireless internet module 113 may be internal or external.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

In addition, the location information module 115 is a module for checking or obtaining the location of the mobile terminal. One example is the Global Position System (GPS) module. The GPS module receives location information from a plurality of satellites. Here, the location information may include coordinate information represented by latitude and longitude. For example, the GPS module can measure the exact time and distance from three or more satellites and accurately calculate the current position by triangulating three different distances. A method of obtaining distance and time information from three satellites and correcting the error with one satellite may be used. In particular, the GPS module can obtain not only the location of latitude, longitude, and altitude but also accurate time together with three-dimensional speed information from the location information received from the satellite.

Meanwhile, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the configuration aspect of the terminal.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (constant voltage / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 detects the current state of the mobile terminal 100 such as the open / closed state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, the acceleration / deceleration of the mobile terminal, and the like. To generate a sensing signal for controlling the operation of the mobile terminal 100. For example, if the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 190 is supplied with power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, Video I / O (Input / Output) port, earphone port, etc. may be included.

Here, the identification module is a chip that stores various information for authenticating the use authority of the mobile terminal 100, and includes a user identification module (UIM) and a subscriber identify module (SIM). , Universal Subscriber Identity Module (“USIM”), and the like. In addition, the device equipped with the identification module (hereinafter, 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through a port. The interface unit 170 receives data or power from an external device and transmits the data to each component inside the mobile terminal 100 or transmits the data inside the mobile terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a shooting mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display unit 13 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. 3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the mobile terminal 100.

The sound output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed by the mobile terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, and key signal input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal can be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. Through the vibration output as described above, the user can recognize the occurrence of the event. Of course, the signal for notification of event occurrence may be output through the display unit 151 or the voice output module 152.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM Random Access Memory (RAM) Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) magnetic memory, It may include at least one type of storage medium of the optical disk. In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

And the controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

The various embodiments described herein may be implemented in a computer readable recording medium using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing the functions. It may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software code may be stored in the memory 160 and executed by the controller 180.

 In the above, the mobile terminal related to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIGS. 2 and 3, the mobile terminal related to the present invention will be further described in terms of components according to appearance. In the following description, a slider type mobile terminal is described as an example among various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like for clarity. Therefore, the present invention is not limited to the slider type mobile terminal, but can be applied to all types of mobile terminals including the above-described type.

2 is a perspective view of an example of a mobile terminal according to the present invention viewed from the front.

The mobile terminal of the present invention includes a first body 200 and a second body 205 configured to be slidable in at least one direction on the first body 200.

A state in which the first body 200 is disposed to overlap with the second body 205 may be referred to as a closed configuration, and as shown in the drawing, the first body 200 may be referred to as the second body 205. The exposed state of at least a portion of the N may be referred to as an open configuration.

The mobile terminal operates mainly in the standby mode in a closed state, but the standby mode may be released by a user's operation. In addition, the mobile terminal operates mainly in a call mode or the like in an open state, but may be switched to a standby mode by a user's manipulation or a lapse of a predetermined time.

The case (casing, housing, cover, etc.) forming the exterior of the first body 200 is formed by the first front case 220 and the first rear case 225. Various electronic components are embedded in the space formed by the first front case 220 and the first rear case 225. At least one intermediate case may be additionally disposed between the first front case 220 and the first rear case 225.

The cases may be formed by injecting a synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output module 152, the camera 121, or the first user input unit 210 may be disposed on the first body 200, specifically, the first front case 220.

The display unit 151 includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information.

In addition, since the touch pad is superimposed on the display unit 151 in a layer structure, the display unit 151 may operate as a touch screen to enable input of information by a user's touch.

The sound output module 152 may be implemented in the form of a speaker.

The camera 121 may be implemented to be suitable for capturing an image or a video of a user or the like.

Like the first body 200, the case forming the exterior of the second body 205 is formed by the second front case 230 and the second rear case 235.

The second user input unit 215 may be disposed on the second body 205, specifically, on the front face of the second front case 230.

The third user input unit 245, the microphone 122, and the interface unit 170 may be disposed in at least one of the second front case 230 or the second rear case 235.

The first to third user inputs 210, 215, and 245 may be collectively referred to as a manipulating portion 130, and may be any method in which the user operates while giving a tactile feeling. Either may be employed.

For example, the user input unit may be implemented as a dome switch or a touch pad capable of receiving a command or information by a user's push or touch operation, or a wheel or jog method of rotating a key, or a manipulation method such as a joystick. May also be implemented.

In the functional aspect, the first user input unit 210 is for inputting a command such as start, end, scroll, etc., and the second user input unit 215 is for inputting numbers, letters, symbols, and the like.

In addition, the third user input unit 245 may operate as a hot-key for activating a special function in the mobile terminal.

The microphone 122 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The interface unit 170 serves as a passage for allowing the mobile terminal according to the present invention to exchange data with an external device. For example, the interface unit 170 is wired or wirelessly, a connection terminal for connecting with an earphone, a port for short-range communication (for example, an infrared port (IrDA port), a Bluetooth port, a wireless LAN port) (wireless Lan port) etc.}, or at least one of power supply terminals for supplying power to the mobile terminal.

The interface unit 170 may be a card socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) and a memory card for storing information.

The power supply unit 190 for supplying power to the mobile terminal is mounted on the second rear case 235 side.

The power supply unit 190 may be detachably coupled for charging, for example, as a rechargeable battery.

3 is a rear perspective view of the mobile terminal of FIG. 2.

Referring to FIG. 3, a camera 121 may be additionally mounted on the rear surface of the second rear case 235 of the second body 205. The camera 121 of the second body 205 has a photographing direction substantially opposite to the camera 121 of the first body 200, and the camera 121 and the camera 121 of the first body 200. And may have different pixels.

For example, the camera 121 of the first body 200 has a low pixel so that it is easy to take a picture of the user's face and transmit it to the counterpart in the case of a video call, and the camera 121 of the second body has a general structure. It is preferable to have a high pixel because the subject is often photographed and not immediately transmitted.

The flash 250 and the mirror 255 may be additionally disposed adjacent to the camera 121 of the second body 205. The flash 250 illuminates the subject when the subject is photographed by the camera 121 of the second body 205. The mirror 255 allows the user to see the user's face or the like when photographing (self-photographing) the user by using the camera 121 of the second body 205.

The sound output module 152 may be further disposed on the second rear case 235.

The sound output module 152 of the second body 205 may implement a stereo function together with the sound output module 152 of the first body 200, and may be used for a call in a speakerphone mode.

In addition, an antenna 260 for receiving a broadcast signal may be disposed on one side of the second rear case 235. The antenna 260 may be installed to be pulled out of the second body 205 and 2.

A portion of the slide module 265 that slidably couples the first body 200 and the second body 205 is disposed on the first rear case 225 side of the first body 200.

The other part of the slide module 265 may be disposed on the second front case 230 side of the second body 205 and may not be exposed to the outside as shown in the drawing.

In the above description, the second camera 121 is disposed on the second body 205, but is not necessarily limited thereto.

For example, at least one or more of the components 260, 121 to 250, and 152 described as disposed in the second rear case 235, such as the camera 121 of the second body, may be the first body 200. May be mounted on the first rear case 225. If so, there is an advantage that the configuration (s) disposed in the first rear case 225 in the closed state are protected by the second body 205. Furthermore, even if the camera 121 of the second body is not provided separately, the camera 121 of the first body may be rotatably formed so that the camera 121 of the second body may be photographed up to the photographing direction of the camera 121 of the second body. .

The terminal 100 illustrated in FIGS. 1 to 3 may be operated in a communication system capable of transmitting data through a frame or packet, including a wired / wireless communication system and a satellite-based communication system. It can be configured to.

Hereinafter, referring to FIG. 4, a communication system capable of operating a terminal according to the present invention will be described.

The communication system may use different air interfaces and / or physical layers. For example, a radio interface usable by a communication system may include frequency division multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (Code Division). Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE)), Global System for Mobile Communications (GSM), etc. May be included. Hereinafter, for convenience of description, the description will be limited to CDMA. However, it is a matter of course that the present invention is applicable to all communication systems including the CDMA wireless communication system.

As shown in FIG. 4, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BS) 270, and base station controllers (BSCs) 275. ), And a mobile switching center (MSC) 280. The MSC 280 is configured to be connected to a public switched telephone network (PSTN) 290 and is also configured to be connected to BSCs 275. The BSCs 275 may be coupled to the BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may include at least one sector, and each sector may include an omnidirectional antenna or an antenna pointing radially out of BS 270. In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BS 270 may be referred to as a base station transceiver subsystem ('BTSs'). In this case, the word "base station" may be called the sum of one BSC 275 and at least one BS 270. The base station may also indicate “cell site”. Alternatively, each of the plurality of sectors for a particular BS 270 may be called a plurality of cell sites.

As shown in FIG. 4, a broadcasting transmitter (BT) 295 transmits a broadcast signal to terminals 100 operating in the system. The broadcast module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 4 illustrates multiple satellite positioning systems (GPS) satellites 300. The satellites 300 help to locate the at least one terminal of the plurality of terminals 100. Although two satellites are shown in FIG. 4, useful location information may be obtained by two or less or more satellites. The GPS module 115 shown in FIG. 1 cooperates with the satellites 300 to obtain desired location information. Here, the location can be tracked using not only the GPS tracking technology but also all the technologies capable of tracking the location. In addition, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

During typical operation of a wireless communication system, BS 270 receives a reverse link signal from various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by a particular base station 270 is processed within by the particular base station 270. The data generated as a result of the processing is transmitted to the connected BSC 275. BSC 275 provides call resource allocation and mobility management functionality, including the organization of soft handoffs between base stations 270. In addition, the BSC 275 transmits the received data to the MSC 280, and the MSC 280 provides an additional transmission service for connection with the PSTN 290. Similarly, PSTN 290 connects with MSC 280, MSC 280 connects with BSCs 275, and BSCs 275 send BSs 270 to transmit a forward link signal to terminals 100. ).

5 is a block diagram schematically illustrating a configuration of a mobile terminal according to the present invention.

As shown in FIG. 5, the mobile terminal 100 according to the present invention includes a wireless communication unit 110, a user input unit 130, a display unit 151, a memory 160, and a controller 180.

As described above, the wireless communication unit 110 includes at least one of the broadcast receiving module 111, the mobile communication module 112, the wireless internet module 113, the short range communication module 114, and the location tracking module 115. It may be configured as. The mobile terminal 100 according to the present invention downloads content using the wireless communication unit 110. In this case, the contents are copyrighted, and unauthorized copying and reproduction are prevented by digital right management (DRM) technology.

The user input unit 130 generates a control signal and various data for controlling the operation of the mobile terminal 100 according to a user's manipulation. The user input unit 130 may be implemented in the form of a touch screen having a layer structure with the display unit 151.

The display unit 151 displays an operation state and a result of the mobile terminal 100. When the display unit 151 is implemented in the form of a touch screen combined with the user input unit 130, the display unit 151 serves as an input device as well as an output device.

The memory 160 stores various programs for controlling the operation of the mobile terminal 100 and various information generated accordingly. The memory 160 stores the content received through the wireless communication unit 110. In addition, a copyright protection scheme set in the content and information related to the copyright protection scheme (hereinafter, related information) are also stored. Here, the content may include audio and video, a document, an image file, and the like.

The copyright protection scheme may include a first scheme for prohibiting copying and playing, a second scheme for limiting playback of contents, and a third scheme for inserting a watermark in the contents. Can be. The watermark is copyright information embedded in content such as digital audio and video, and may be implemented in the form of text, an image, a symbol, a voice message, and the like.

The related information may include information regarding a time limit and copyright information such as a watermark and a prohibition of reproduction according to a copyright protection scheme. For example, when the copyright protection scheme set for the content is the second scheme, the related information includes information on a time at which the content can be played, that is, a time limit.

The controller 180 controls each of the above components to operate the mobile terminal 100. The controller 180 may forward the content stored in the memory 160 to another terminal, that is, an external device, or download the content from the external device through the wireless communication unit 110.

In addition, the controller 180 checks a copyright protection scheme when transmitting content, and transmits the corresponding content and related information according to the copyright protection scheme. When the copyright protection scheme is set to the first scheme, the controller 180 cannot reproduce the contents on the external device even if the content cannot be transmitted or transmitted to the external device.

In addition, when the copyright protection scheme is set as the second scheme, the controller 180 transmits the information about the time limit for playing the content and the content together as related information. In this case, the controller 180 may transmit the entire content or a part of the content that can be played for a limited time as a sample. In addition, the copyright information may also be transmitted to output the copyright information when the content is reproduced by the receiving terminal.

In addition, when the copyright protection scheme is set to the third scheme, the controller 180 transmits the contents and the watermark to be inserted into the contents as related information. In this case, the controller 180 may insert and transmit a watermark to the content.

In addition, the controller 180 may include a multimedia module 181 for multimedia reproduction as described above. The multimedia module 181 plays content selected by a user among contents stored in the memory 160 under the control of the controller 180. At this time, the multimedia module 181 plays the content based on the related information. For example, if the copyright protection function is set such that the content can be played only for 25 seconds, the multimedia module 181 may play the content only for 25 seconds.

6 is a flowchart illustrating a copyright protection method of a mobile terminal according to an embodiment of the present invention. In the present embodiment, a description will be given taking an example of forwarding content to another terminal through infrared communication.

Referring to FIG. 6, first, the transmitting terminal A and the receiving terminal B establish a communication environment for infrared communication (S101). For example, the transmitting terminal A and the receiving terminal B are set to the transmitting mode and the receiving mode through menu operations, respectively, and operate the short range communication module 114 of each wireless communication unit 110.

When the communication environment setting of the transmitting terminal A and the receiving terminal B is completed, the controller 180 of the transmitting terminal A receives a content to be transmitted by an operation of the user input unit 130 of the user (S103). .

Subsequently, the controller 180 of the transmitting terminal A checks the copyright protection scheme set for the selected content according to the data generated from the user input unit 130 (S105).

According to the copyright protection scheme, the controller 180 of the transmitting terminal A transmits the selected content and its related information together (S107). Content transmission according to the copyright protection method will be described in more detail below.

When the copyright protection scheme is the first scheme, even if the control unit 180 of the transmitting terminal A does not transmit or transmits the corresponding content to the receiving terminal B, the receiving terminal B may reproduce the contents. none. For example, the controller 180 of the transmitting terminal A cannot transmit the corresponding content to the receiving terminal B when copying is prohibited as a result of checking the copyright protection scheme. In this case, the controller 180 of the transmitting terminal A may output a warning message indicating this fact to the display unit 151 or output a warning sound and a voice message through the sound output module 152.

When the copyright protection scheme is the second scheme, the controller 180 of the transmitting terminal A transmits the contents together with the time limit information that can reproduce the contents. The time limit is a value arbitrarily set by the copyright holder and the operator. In this case, the controller 180 of the transmitting terminal A may also transmit copyright information. In addition, the transmitting terminal A may transmit a portion of the content that can be played for a limited time in a sample form.

When the copyright protection scheme is the third scheme, the controller 180 transmits the content and the watermark to be inserted into the contents. The watermark is set by a copyright holder, a business operator, a content provider, and the like.

The receiving end B receives the content and the related information transmitted from the transmitting terminal A and stores it in the memory 160.

When the reception of the content and the related information is completed, the transmitting terminal A and the receiving terminal B release the connection. At this time, the transmitting terminal (A) and the receiving terminal (B) stops the operation of each short-range communication module 114.

Then, when the user of the receiving terminal (B) selects the content to play out of the received content, the controller 180 of the receiving terminal (B) operates the multimedia module 181. The multimedia module 181 plays the corresponding content selected according to the related information.

For example, if the related information is prohibition of reproduction, the multimedia module 181 cannot reproduce the selected content. In this case, the controller 180 of the receiving terminal B displays a notification message indicating that the content cannot be played on the display unit 151 or outputs a voice message through the sound output module 152.

In addition, when the related information is a time limit, the multimedia module 181 of the reception terminal B plays the selected content only during the time limit. For example, as shown in FIG. 7A, when the time limit is 25 seconds, the multimedia module 181 plays the selected content for 25 seconds. In this case, when the content is a video or a still image, the remaining time and copyright information may be displayed as shown in FIG. 7A. If the content is audio, a voice message such as 'This content is played for 25 seconds' may be output before the audio is played. Alternatively, the audio message may be output as a voice message indicating the remaining time in a predetermined time unit while the audio data is reproduced (for 25 seconds).

If the related information is a watermark, the multimedia module 181 inserts and outputs a watermark into content under the control of the controller 180. For example, when outputting a moving image or a still image as illustrated in FIG. 7B, the copyright information is inserted into the content in the form of text, symbols, images, etc. on the screen and output to the display unit 151. In addition, when the content is audio, a voice message such as copyright information 'This content is copyright protected' may be inserted into the content so that the content may be output before or after the content is played.

In the present embodiment, as shown in FIG. 7B, the watermark is displayed in the center of the screen of the display unit 151 as an example. However, the watermark may be displayed anywhere on the screen.

In the above-described embodiment, a case of transmitting content to another terminal through wireless communication such as infrared communication is described as an example. However, the content may be transmitted to another terminal through wired communication using a data communication cable.

In addition, the present invention extends the forward lock function to limit content playback time or insert a watermark, thereby allowing a user to freely check a sample of the content and at the same time protect the copyright of the content.

According to an embodiment of the present invention, the above-described method may be embodied as computer readable codes on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes. In addition, the computer may include the controller 180 of the terminal.

The above-described mobile terminal is not limited to the configuration and method of the above-described embodiments, the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. It may be.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

Figure 2 is a front perspective view of a mobile terminal according to an embodiment of the present invention.

Figure 3 is a rear perspective view of a mobile terminal according to an embodiment of the present invention.

4 is a block diagram of a wireless communication system that can operate a mobile terminal according to an embodiment of the present invention.

5 is a block diagram showing a schematic configuration of a mobile terminal according to an embodiment of the present invention.

6 is a flowchart illustrating a copyright protection method of a mobile terminal according to an embodiment of the present invention.

7A and 7B illustrate screens of the mobile terminal according to the embodiment of FIG. 6.

[Explanation of symbols on the main parts of the drawings]

100: mobile terminal 110: wireless communication unit

120: A / V input unit 130: user input unit

140: sensing unit 150: output unit

160: memory 170: interface unit

180: control unit 190: power supply unit

Claims (11)

A wireless communication unit performing wireless communication with an external device; A memory for storing contents downloaded through the wireless communication unit, copyright protection scheme and related information set therein; And transmitting the content and related information according to a copyright protection scheme set in the content and playing the content according to the related information when delivering the content to an external device. The method of claim 1, The copyright protection method includes a first method of prohibiting any one or more of copying and playing, a second method of limiting a playing time of content, and a third method of embedding a watermark in the content. The method of claim 1, The related information may include information such as a time limit for playing the content, a watermark to be inserted into the content, a copy prohibition, and a prohibition of reproduction. Establishing a communication environment; If the communication environment is established, receiving content to be transmitted; And transmitting the corresponding content and copyright protection related information according to a copyright protection scheme set in the selected content. The method of claim 4, wherein The copyright protection method includes a method of prohibiting any one or more of copying and playing, a method of limiting the playing time of the content, and a method of inserting a watermark into the content. The method of claim 4, wherein The related information includes a content copyright protection method of a mobile terminal, comprising information such as a time limit for playing the content, a watermark to be inserted into the content, a copy prohibition, and a prohibition of reproduction. Establishing a communication environment; Receiving contents and copyright protection related information transmitted from an external device when the communication environment is established; And reproducing the content on the basis of the received copyright protection related information. The method of claim 5, wherein the content playback step, The content copyright protection method of the mobile terminal, characterized in that for playing the content for a limited time of the copyright protection related information. The method of claim 8, wherein the playing of the content comprises: And copyright information and the remaining time while the content is being played. The method of claim 5, wherein the content playback step, And a watermark of the copyright protection-related information is inserted into the content and played back. The method of claim 5, wherein the content playback step, And not playing the selected content according to the prohibition of reproduction and copying of the copyright protection related information.

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