KR101688149B1 - Apparatus, system and method for transmitting video - Google Patents

Abstract

The present invention relates to a method and apparatus for transmitting a broadcast-related image or the like, which can be received by an image display device through wireless communication, to a mobile terminal so that a user can freely select a desired channel on the mobile terminal to watch a broadcast received from the image display device, The present invention is intended to provide an environment in which a user of a mobile terminal can watch a broadcast while processing a signal in an image display device so as to be optimized for a usage environment of the mobile terminal. To this end, an image transmission method according to an embodiment of the present invention includes: (a) transmitting channel information to a mobile terminal; (b) receiving selected channel information from the mobile terminal; (c) receiving a stream signal corresponding to the selected channel information; (d) demultiplexing the stream signal and decoding the video signal included in the stream signal; (e) scaling the decoded video signal based on resolution information of the mobile terminal, and encoding the scaled video signal; And (f) transmitting the encoded video signal and voice and data signals included in the stream signal to the mobile terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to an image transmission apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission apparatus, system and method, and more particularly, to an apparatus and system capable of transmitting a broadcast image to a mobile terminal, and a method of transmitting an image in such an apparatus and system.

The video display device is a device having a function of displaying an image that the user can view. The user can view the broadcast through the video display device. The video display device displays the broadcast selected by the user among the broadcast signals transmitted from the broadcast station on the display. Currently, broadcasting is changing from analog broadcasting to digital broadcasting around the world.

Digital broadcasting refers to broadcasting in which digital video and audio signals are transmitted. Compared to analog broadcasting, digital broadcasting is strong against external noise and has a small data loss, is advantageous for error correction, has a high resolution, and provides a clear screen. Also, unlike analog broadcasting, digital broadcasting is capable of bidirectional service.

The present invention relates to a method and apparatus for transmitting a broadcast-related image or the like, which can be received by an image display device through wireless communication, to a mobile terminal so that a user can freely select a desired channel on the mobile terminal to watch a broadcast received from the image display device, The present invention is intended to provide an environment in which a user of a mobile terminal can watch a broadcast while processing a signal in an image display device so as to be optimized for a usage environment of the mobile terminal.

According to an embodiment of the present invention, there is provided an image transmission method including: (a) transmitting channel information to a mobile terminal; (b) receiving selected channel information from the mobile terminal; (c) receiving a stream signal corresponding to the selected channel information; (d) demultiplexing the stream signal and decoding the video signal included in the stream signal; (e) scaling the decoded video signal based on resolution information of the mobile terminal, and encoding the scaled video signal; And (f) transmitting the encoded video signal and voice and data signals included in the stream signal to the mobile terminal.

In a preferred embodiment, the step (f) includes the steps of converting the encoded video signal and the voice and data signals included in the stream signal into an RF signal of a DMB communication standard; And transmitting the RF signal converted into the DMB communication standard to the mobile terminal.

In a preferred embodiment of the present invention, the converting step comprises: modulating the encoded video signal and the voice and data signals included in the stream signal into an RF signal of a DMB communication standard; And amplifying the modulated RF signal.

In a preferred embodiment, the step (f) includes the steps of converting an RF signal converted into the DMB communication standard into an RF signal of an ISM (Industrial Scientific Medical) band; And transmitting the converted RF signal to the ISM band to the mobile terminal.

In yet another preferred embodiment, the step (a) comprises: receiving a broadcast reception request from the mobile terminal; And authenticating the mobile terminal.

Meanwhile, an image transmission apparatus according to an embodiment of the present invention includes a transmission control unit for transmitting channel information to a mobile terminal and receiving channel information selected from the mobile terminal; And demultiplexing the stream signal, decoding the video signal included in the stream signal, and scaling the decoded video signal based on the resolution information of the mobile terminal, And a signal processing unit for encoding the scaled video signal, wherein the transmission control unit transmits the encoded video signal and the voice and data signals included in the stream signal to the mobile terminal.

In a preferred embodiment, the transmission control unit converts the encoded video signal and the voice and data signals included in the stream signal into an RF signal of the DMB communication standard, and transmits the RF signal converted into the DMB communication standard to the mobile terminal To the mobile station.

Also, in a preferred embodiment, the transmission control unit comprises: a modulator for modulating the encoded video signal and the voice and data signals included in the stream signal into an RF signal of a DMB communication standard; And an amplifier for amplifying the modulated RF signal.

In a preferred embodiment, the transmission control unit converts the converted RF signal into an RF signal of an ISM (Industrial Scientific Medical) band, and transmits the converted RF signal to the ISM band to the mobile terminal .

Further, in a preferred embodiment, the image transmission apparatus further includes an authentication processing unit for authenticating the mobile terminal, and the transmission control unit receives a broadcast reception request from the mobile terminal.

Meanwhile, the image transmission system according to an embodiment of the present invention is an image transmission system including a mobile terminal and an image display device, the image display device transmits channel information to the mobile terminal, A transmission control unit for receiving information; And demultiplexing the stream signal, decoding the video signal included in the stream signal, and scaling the decoded video signal based on the resolution information of the mobile terminal, And a signal processor for encoding the scaled video signal, wherein the mobile terminal receives the channel information from the video display device and transmits the selected channel information to the video display device, And transmitting the encoded video signal and the voice and data signals included in the stream signal to the mobile terminal.

According to embodiments of the present invention, a user may be provided with a broadcast receiving service related to various channels that can be received by the video display device through the mobile terminal. Particularly, it is possible to receive a broadcast image related to a channel selected by the mobile terminal, separately from the broadcast image being viewed by the image display device, and it is possible to receive such a service simultaneously from a plurality of mobile terminals according to a supported communication standard have.

In general, since the number of broadcast channels that can be received from the mobile terminal is large, the video display device can view the broadcast channel that is not provided by the mobile terminal. In view of the characteristics of the mobile terminal, There is also the advantage of being free.

1 illustrates a video transmission system according to an embodiment of the present invention.
2 is an internal block diagram of an image display device according to an embodiment of the present invention.
3 is an internal block diagram of the control unit of FIG.
4 is a block diagram of a mobile terminal in accordance with an embodiment of the present invention.
5A to 5C are conceptual diagrams of an image transmission system according to embodiments of the present invention.
6 is a flowchart illustrating a video transmission process according to an exemplary embodiment of the present invention.
FIG. 7 is a detailed flowchart of the video, audio, and data transmission step (S160) shown in FIG. 6 according to another embodiment of the present invention.
FIG. 8 is a detailed flowchart of the video, audio, and data transmission step (S160) shown in FIG. 6 according to another embodiment of the present invention.
9 is a flowchart illustrating an image transmission process according to an embodiment of the present invention.

Video transmission system

1 illustrates a video transmission system according to an embodiment of the present invention.

Referring to the drawings, an image display device 100 according to an embodiment of the present invention can communicate with a broadcasting station 10, a network server 20, or an external device 30.

The video display device 100 can receive a broadcasting signal including a video signal transmitted from the broadcasting station 10. [ The video display device 100 may process the video signal, the audio signal, or the data signal included in the broadcast signal so as to be suitable for output from the video display device 100. [ The video display device 100 can output video or audio based on the processed video signal.

On the other hand, the video display device 100 can communicate with the network server 20. The network server 20 is a device capable of transmitting and receiving signals to and from the video display device 100 through an arbitrary network. For example, the network server 20 may be a mobile phone terminal that can be connected to the video display device 100 through a wired or wireless base station. In addition, the network server 20 may be a device capable of providing content to the video display device 100 through the Internet network. The content provider can provide the content to the video display device 100 using the network server.

On the other hand, the video display device 100 can communicate with the mobile terminal 200. The mobile terminal 200 can transmit and receive signals directly to the image display device 100 by wire or wirelessly.

The broadcast station 10, the network server 20, or the mobile terminal 200 can transmit a signal including a video signal to the video display device 100. [ The image display device 100 can display an image based on a video signal included in an input signal. The video display device 100 may transmit a signal transmitted from the broadcasting station 10 or the network server 20 to the video display device 100 to the mobile terminal 200. In addition, a signal transmitted from the mobile terminal 200 to the video display device 100 may be transmitted to the broadcasting station 10 or the network server 20. That is, the video display device 100 can transmit content included in the signals transmitted from the broadcasting station 10, the network server 20, and the mobile terminal 200, in addition to directly reproducing the video content from the video display device 100.

Of the video display device  General description

2 is an internal block diagram of an image display device according to an embodiment of the present invention.

2, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast receiving unit 105, an external device interface unit 135, a storage unit 140, a user input interface unit 150, A control unit 170, a display unit 180, an audio output unit 185, and a power supply unit 190. The broadcast receiving unit 105 may include a tuner 110, a demodulating unit 120, and a network interface unit 130. The tuner 110 and the demodulator 120 may be selectively provided with the network interface unit 130. In addition, the broadcast receiving unit 105 may include a plurality of tuners 110.

The tuner 110 selects an RF broadcast signal corresponding to a channel selected by the user or all previously stored channels among RF (Radio Frequency) broadcast signals received through the antenna. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 110 can be directly input to the controller 170.

Also, the tuner 110 can receive RF carrier signals of a single carrier according to an Advanced Television System Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

Meanwhile, the tuner 110 sequentially selects RF broadcast signals of all the broadcast channels stored through the channel memory function among the RF broadcast signals received through the antenna, and converts the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal have.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 110 is the ATSC scheme, the demodulator 120 performs an 8-VSB (8-Vestigal Side Band) demodulation. Also, the demodulation unit 120 may perform channel decoding. To this end, the demodulator 120 includes a trellis decoder, a de-interleaver, and a reed solomon decoder to perform trellis decoding, deinterleaving, Solomon decoding can be performed.

For example, when the digital IF signal output from the tuner 110 is a DVB scheme, the demodulator 120 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. Also, the demodulation unit 120 may perform channel decoding. For this, the demodulator 120 may include a convolution decoder, a deinterleaver, and a reed-solomon decoder to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

Meanwhile, the demodulating unit 120 may be separately provided according to the ATSC scheme and the DVB scheme. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The stream signal output from the demodulation unit 120 may be input to the controller 170. The control unit 170 performs demultiplexing, video / audio signal processing, and the like, and then outputs the video to the display unit 180 and audio to the audio output unit 185.

The external device interface unit 135 can connect the external device and the video display device 100. [ To this end, the external device interface unit 135 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 135 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer (notebook) The external device interface unit 135 transmits external video, audio, or data signals to the controller 170 of the video display device 100 through a connected external device. Also, the control unit 170 can output the processed video, audio, or data signal to the connected external device. To this end, the external device interface unit 135 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The A / V input / output unit includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform short-range wireless communication with other electronic devices. The video display device 100 is connected to a communication network such as Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, DLNA (Digital Living Network Alliance) Depending on the standard, it can be networked with other electronic devices.

Also, the external device interface unit 135 may be connected to the various set-top boxes via at least one of the various terminals described above to perform input / output operations with the set-top box.

Meanwhile, the external device interface unit 135 may receive the application or application list in the adjacent external device, and may transmit the received application or application list to the control unit 170 or the storage unit 140.

The network interface unit 130 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network. The network interface unit 130 may include an Ethernet terminal or the like for connection to a wired network and may be a WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless) broadband), Wimax (World Interoperability for Microwave Access), and HSDPA (High Speed Downlink Packet Access) communication standards.

The network interface unit 130 can access a predetermined web page via the network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server. In addition, content or data provided by a content provider or a network operator can be received. That is, it can receive contents such as a movie, an advertisement, a game, a VOD, a broadcast signal, and related information provided from a content provider or a network provider through a network. In addition, the update information and the update file of the firmware provided by the network operator can be received. It may also transmit data to the Internet or a content provider or network operator.

In addition, the network interface unit 130 can select and receive a desired application among applications open to the public via a network.

The storage unit 140 may store a program for each signal processing and control in the control unit 170 or may store the processed video, audio, or data signals.

The storage unit 140 may also function to temporarily store video, audio, or data signals input from the external device interface unit 135 or the network interface unit 130. In addition, the storage unit 140 may store information on a predetermined broadcast channel through the channel memory function.

The storage unit 140 may store a list of applications or applications input from the external device interface unit 135 or the network interface unit 130. [

The storage unit 140 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, ROM (EEPROM, etc.), and the like. The video display device 100 may reproduce and provide a content file (a moving image file, a still image file, a music file, a document file, an application file, etc.) stored in the storage unit 140 to a user.

FIG. 2 illustrates an embodiment in which the storage unit 140 is provided separately from the controller 170, but the scope of the present invention is not limited thereto. The storage unit 140 may be included in the controller 170.

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or a signal from the control unit 170 to the user.

For example, the user input interface unit 150 may transmit a user input signal or a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170 have.

For example, the user input interface unit 150 may transmit a user input signal or a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit 170, (Not shown) can be transmitted. Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110 or the demodulation unit 120 or the external device interface unit 135 to generate a signal for video or audio output Can be generated and output.

The video signal processed by the controller 170 may be input to the display unit 180 and displayed as an image corresponding to the video signal. The video signal processed by the controller 170 may be input to the external output device through the external device interface 135. [

The audio signal processed by the control unit 170 may be output to the audio output unit 185 through audio. The voice signal processed by the control unit 170 may be input to the external output device through the external device interface unit 135.

Although not shown in FIG. 2, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG.

In addition, the control unit 170 can control the overall operation in the video display device 100. [ For example, the control unit 170 may control the tuner 110 to control the tuner 110 to select an RF broadcast corresponding to a channel selected by the user or a previously stored channel.

In addition, the controller 170 may control the image display device 100 according to a user command or an internal program input through the user input interface unit 150. In particular, the user can access the network and download a list of applications or applications desired by the user to the video display device 100.

For example, the controller 170 controls the tuner 110 to input a signal of a selected channel according to a predetermined channel selection command received through the user input interface unit 150. Then, video, audio, or data signals of the selected channel are processed. The control unit 170 allows the display unit 180 or the audio output unit 185 to output the video or audio signal processed by the user through the channel information or the like selected by the user.

For example, the control unit 170 may control the operation of the external device through the external device interface unit 135, for example, a camera or a camcorder, according to an external device video playback command received through the user input interface unit 150 So that the video signal or the audio signal of the audio signal output through the display unit 180 or the audio output unit 185 can be outputted.

Meanwhile, the control unit 170 may control the display unit 180 to display an image. For example, the broadcast image input through the tuner 110, the external input image input through the external device interface unit 135, the image input through the network interface unit, or the image stored in the storage unit 140 may be displayed on the display unit 180). ≪ / RTI > At this time, the image displayed on the display unit 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

On the other hand, when entering the application viewing item, the control unit 170 can control to display a list of applications or applications that can be downloaded from the video display device 100 or from an external network.

The control unit 170 can control to install and drive an application downloaded from an external network, in addition to various user interfaces. Further, it is possible to control so that an image related to the executed application is displayed on the display unit 180 by the user's selection.

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided. The channel browsing processing unit receives the stream signal TS output from the demodulation unit 120 or the stream signal output from the external device interface unit 135 and extracts an image from an input stream signal to generate a thumbnail image . The generated thumbnail image may be directly or encoded and input to the controller 170. In addition, the generated thumbnail image may be encoded in a stream format and input to the controller 170. The control unit 170 may display a thumbnail list having a plurality of thumbnail images on the display unit 180 using the input thumbnail images. On the other hand, the thumbnail images in this thumbnail list can be updated in sequence or simultaneously. Accordingly, the user can easily grasp the contents of a plurality of broadcast channels.

The display unit 180 converts an image signal, a data signal, an OSD signal processed by the control unit 170 or a video signal and a data signal received from the external device interface unit 135 into R, G, and B signals, respectively Thereby generating a driving signal.

The display unit 180 may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like.

Meanwhile, the display unit 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives a signal processed by the control unit 170, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as a voice. The voice output unit 185 may be implemented by various types of speakers.

On the other hand, a photographing unit (not shown) for photographing a user can be further provided. The photographing unit (not shown) may be implemented by a single camera, but the present invention is not limited thereto, and may be implemented by a plurality of cameras. The image information photographed by the photographing unit (not shown) is input to the control unit 170.

In order to detect the user's gesture, a sensing unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor may be further included in the image display device 100 have. A signal sensed by a sensing unit (not shown) may be transmitted to the controller 170 through the user input interface unit 150.

The control unit 170 may sense the gesture of the user by combining the images photographed by the photographing unit (not shown) or the signals sensed by the sensing unit (not shown).

The power supply unit 190 supplies power to the entire video display device 100. Particularly, it is possible to supply power to a control unit 170 that can be implemented in the form of a system on chip (SOC), a display unit 180 for displaying an image, and an audio output unit 185 for audio output .

To this end, the power supply unit 190 may include a converter (not shown) for converting the AC power into DC power. Meanwhile, for example, when the display unit 180 is implemented as a liquid crystal panel having a plurality of backlight lamps, an inverter (not shown) that can perform a PWM operation for variable luminance or dimming driving is further provided It is possible.

The video display device 100 described above can be applied to digital broadcasting of the ATSC system (8-VSB system), digital broadcasting of the DVB-T system (COFDM system), digital broadcasting of the ISDB-T system (BST-OFDM system) And a digital broadcasting receiver capable of receiving at least one of the digital broadcasting signals.

The video display device described in the present specification is an image display device in which the display unit 180 and the audio output unit 185 shown in FIG. 1 are excluded. The video display device includes a display unit 180, Or a wireless type for transmitting / receiving data to /

Meanwhile, a block diagram of the image display device 100 shown in FIG. 2 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to the specifications of the video display device 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

2, the video display device 100 may include a tuner 110 and a demodulator 120 shown in FIG. 2 and may include a network interface unit 130 or an external device interface unit 135 , It is possible to receive and reproduce the image contents.

Processing of video, audio and data signals

3 is an internal block diagram of the control unit of FIG.

The control unit 170 includes a demultiplexing unit 310, an image processing unit 320, an OSD generating unit 340, a mixer 350, a frame rate converting unit 355 ), And a formatter 360. A voice processing unit 370, a data processing unit 380, and a transmission control unit 390.

The demultiplexer 310 demultiplexes the input stream. For example, when an MPEG-2 TS is input, it can be demultiplexed into video, audio, and data signals, respectively. The stream signal input to the demultiplexer 310 may be a stream signal output from the tuner 110 or the demodulator 120 or the external device interface 135.

The image processing unit 320 may perform image processing of the demultiplexed image signal. For this, the image processing unit 320 may include a video decoder 325 and a scaler 335.

The video decoder 325 decodes the demultiplexed video signal and the scaler 335 performs scaling so that the resolution of the decoded video signal can be output from the display unit 180. The video decoder 325 can include a decoder of various standards. For example, if the demultiplexed video signal is an MPEG-2 standard encoded video signal, it can be decoded by an MPEG-2 decoder.

Also, for example, if the demultiplexed video signal is an encoded video signal of the H.264 standard according to the DMB (Digital Multimedia Broadcasting) scheme or DVB-H, it can be decoded by the H.264 decoder.

Meanwhile, the video signal decoded by the video processor 320 is input to the mixer 350.

The OSD generation unit 340 generates an OSD signal according to a user input or by itself. For example, based on a user input signal or a control signal, a signal for displaying various information in graphic or text on the screen of the display unit 180 can be generated. The generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, a widget, and an icon.

For example, the OSD generating unit 340 may generate a signal for displaying broadcast information based on a caption of a broadcast image or an EPG.

The mixer 350 may mix the OSD signal generated by the OSD generator 340 and the decoded video signal processed by the image processor 220. The mixed signal is provided to formatter 360. Since the decoded broadcast video signal or the external input signal and the OSD signal are mixed, the OSD can be overlaid on the broadcast image or the external input image.

A frame rate converter (FRC) 355 can convert a frame rate of an input image. For example, a frame rate of 60 Hz is converted to 120 Hz or 240 Hz. When converting the frame rate of 60 Hz to 120 Hz, it is possible to insert the same first frame between the first frame and the second frame, or insert the third frame predicted from the first frame and the second frame. When converting a frame rate of 60 Hz to 240 Hz, it is possible to insert three more identical frames or insert three predicted frames. On the other hand, it is also possible to maintain the input frame rate without performing another conversion.

The formatter 360 receives the output signal of the frame rate conversion unit 355 and changes the format of the signal to be suitable for the display unit 180 and outputs the signal. For example, the R, G, and B data signals may be output as low voltage differential signaling (LVDS) signals or mini-LVDS signals.

The voice processing unit 370 can perform voice processing of the demultiplexed voice signal. For this, the voice processing unit 370 may include various decoders. If the demultiplexed speech signal is a coded speech signal, the speech processing unit 370 can decode it. For example, the demultiplexed speech signal may be decoded by an MPEG-2 decoder, an MPEG 4 decoder, an AAC decoder, or an AC-3 decoder. In addition, the audio processing unit 370 in the control unit 170 can process a base, a treble, a volume control, and the like.

The data processing unit 380 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be EPG (Electronic Program Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel. For example, the EPG information may be ATSC-PSIP (ATSC-Program and System Information Protocol) information in the case of the ATSC scheme and may include DVB-SI information in the DVB scheme . The ATSC-PSIP information or DVB-SI information may be information included in the above-described stream, i.e., the header (4 bytes) of the MPEG-2 TS.

Of the video display device  Video transmission function

The transmission control unit 390 receives a broadcast reception request from the mobile terminal 200, transmits and receives channel information to and from the mobile terminal 200, and transmits a video signal, a voice signal, and a data signal to the mobile terminal 200 .

According to an embodiment of the present invention, the video display device 100 may be a wireless LAN (Wi-Fi), a wireless broadband (Wibro), a World Interoperability for Microwave Access (Wimax), a High Speed Downlink Packet Access (HSDPA) (Bluetooth), Radio Frequency Identification (RFID), Infrared Data Association (UDA), Ultra Wideband (UWB), ZigBee, and Digital Living Network Alliance And can communicate with the terminal 200.

The transmission control unit 390 monitors whether or not a broadcast reception request is received from the mobile terminal 200. When the broadcast reception request is received from the mobile terminal 200, the transmission control unit 390 stores the received broadcast reception request in the storage unit 140 or the broadcast reception unit 105 To the mobile terminal 200, information on a predetermined broadcast channel received through the mobile terminal 200. The transmission control unit 390 may transmit the EPG information received from the data processing unit 380 to the mobile terminal 200 together with information on the broadcast channel.

The transmission control unit 390 monitors whether a broadcast reception request for a selected channel among the channels included in the information on the predetermined broadcast channel transmitted from the mobile terminal 200 to the mobile terminal 200 is received, Upon receiving a broadcast reception request for a channel, the broadcast receiver 105 receives broadcasts related to the selected channel.

The demultiplexer 310 demultiplexes the stream signal into a video signal, a voice signal, and a data signal, and outputs the demultiplexed video signal, the audio signal, and the data signal to the demultiplexer 310. The demultiplexer 310 demultiplexes To the image processing unit 320, the audio processing unit 370, and the data processing unit 380, respectively.

The image processing unit 320 performs image processing of the demultiplexed image signal. The video decoder 325 decodes the demultiplexed video signal and the scaler 335 performs scaling so that the resolution of the decoded video signal can be outputted from the mobile terminal 200. The image processing unit 320 decodes the decoded video signal in the mobile terminal 200, for example, MPEG-2, and encodes the decoded video signal so as to be output. The image processing unit 320 outputs the encoded image signal to the transmission control unit 390.

Further, the voice processing unit 370 performs voice processing of the demultiplexed voice signal. The voice processing unit 370 outputs the demultiplexed voice signal to the transmission control unit 390 when the demultiplexed voice signal can be decoded by the mobile terminal 200 and output. If the demultiplexed voice signal is not decodable and output by the mobile terminal 200, the voice processor 370 decodes the demultiplexed voice signal and transmits the decoded voice signal to the mobile terminal 200, such as AAC, And encodes it so as to be outputable. The voice processing unit 370 outputs the encoded voice signal to the transmission control unit 390.

In addition, the data processing unit 380 performs data processing of the demultiplexed data signal. The data processor 380 outputs the demultiplexed data signal to the transmission controller 390 when the demultiplexed data signal is decoded by the mobile terminal 200 and can be output. If the demultiplexed data signal is not decodable and output by the mobile terminal 200, the data processor 380 decodes the demultiplexed data signal. The decoded data signal is decoded by the mobile terminal 200 So as to be outputable. The data processing unit 380 outputs the encoded data signal to the transmission control unit 390.

The transmission control unit 390 transmits the video signal, the audio signal, and the data signal output from the video processing unit 320, the audio processing unit 370, and the data processing unit 380 to the mobile terminal 360, respectively.

According to another embodiment of the present invention, the video display device 100 can communicate with the mobile terminal 200 according to a wireless communication standard provided by a DMB or the like.

The transmission control unit 390 converts the video signal, audio signal and data signal output from the video processing unit 320, the audio processing unit 370 and the data processing unit 380 into RF signals of the DMB communication standard. For example, the transmission control unit 390 modulates the image signal, the audio signal, and the data signal output from the image processing unit 320, the audio processing unit 370, and the data processing unit 380, respectively, into RF signals of the DMB communication standard, And amplifies the modulated RF signal. Also, the transmission control unit 390 transmits the RF signal converted into the DMB communication standard to the mobile terminal 200.

According to another embodiment of the present invention, the video display device 100 can communicate with the mobile terminal 200 according to a communication standard such as ISM (Industrial Scientific Medical). The ISM band is 2.4 ~ 2.4835GHz, which is unlicensed in the world and can be freely used by anyone.

The transmission control unit 390 converts the video signal, audio signal and data signal output from the video processing unit 320, the audio processing unit 370 and the data processing unit 380 into RF signals of the DMB communication standard. Also, the transmission control unit 390 converts the RF signal converted into the DMB communication standard into an RF signal of the ISM (Industrial Scientific Medical) band. In addition, the transmission control unit 390 transmits the RF signal converted into the ISM band to the mobile terminal 200.

Of the video display device  Security Features

According to embodiments of the present invention, the transmission control unit 390 can process authentication for the mobile terminal 200. [ For example, when the transmission control unit 390 receives a broadcast reception request from the mobile terminal 200, the transmission control unit 390 may request the mobile terminal 200 to authenticate by inputting a predefined password. In this case, the transmission control unit 390 can transmit the broadcast-related video or the like to the mobile terminal 200 only when the password is successfully input.

In addition, the transmission control unit 390 may limit the number of the mobile terminals 200 to transmit broadcast-related images when a plurality of mobile terminals 200 request broadcast reception. In this case, when the number of the mobile terminals 200 to which channel information is to be transmitted reaches a threshold value and a broadcast reception request is received from another mobile terminal 200, the transmission control unit 390 may transmit the channel information to the mobile terminal 200 Related video or the like can not be received without transmitting the broadcast-related video or the like to the mobile terminal 200.

Also, the transmission control unit 390 may limit the Wi-Fi and DMB service radius when communicating with the mobile terminal 200 through the Wi-Fi and DMB communication standards. Accordingly, reception of broadcast-related images and the like depending on the location of the mobile terminal 200 may be restricted. In particular, the transmission control unit 390 may set the Wi-Fi and DMB service radius to an ellipse.

General description of mobile terminal

4 is a block diagram of a mobile terminal in accordance with an embodiment of the present invention.

The mobile terminal 200 includes a wireless communication unit 210, an audio / video input unit 220, a user input unit 230, a sensing unit 240, an output unit 250, a memory 260, A control unit 280, a power supply unit 290, and the like.

The wireless communication unit 210 may include one or more modules for enabling wireless communication between the mobile terminal 200 and the wireless communication system or between the mobile terminal 200 and the network in which the mobile terminal 200 is located. For example, the wireless communication unit 210 may include a broadcast receiving module 211, a mobile communication module 212, a wireless Internet module 213, a short distance communication module 214, and a location information module 215 .

The broadcast receiving module 211 receives broadcast signals 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 refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 212.

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

For example, the broadcast receiving module 211 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 211 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 211 may be stored in the memory 260.

The mobile communication module 212 transmits and receives a radio signal to 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 depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 213 is a module for wireless Internet access, and may be embedded in the mobile terminal 200 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short range communication module 214 is a module for short range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 215 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 4, an A / V (Audio / Video) input unit 220 is for inputting an audio signal or a video signal, and may include a camera 221 and a microphone 222. The camera 221 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 251. [

The image frame processed by the camera 221 may be stored in the memory 260 or may be transmitted to the outside via the wireless communication unit 210. [ At least two cameras 221 may be provided depending on the use environment.

The microphone 222 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data may be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 212 when the voice data is in the call mode, and output. Various noise elimination algorithms may be implemented in the microphone 222 to remove noise generated in receiving an external sound signal.

The user input unit 230 generates input data for a user to control the operation of the terminal. The user input unit 230 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 240 senses the current state of the mobile terminal 200 such as the open / close state of the mobile terminal 200, the position of the mobile terminal 200, the presence of the user, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 200. For example, when the mobile terminal 200 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether power is supplied to the power supply unit 290, whether the interface unit 270 is coupled to an external device, and the like. Meanwhile, the sensing unit 240 may include a proximity sensor (not shown).

The output unit 250 includes a display unit 251, an audio output module 252, an alarm unit 253, a haptic module 254, and the like, for generating output related to visual, auditory, .

The display unit 251 displays (outputs) information processed by the mobile terminal 200. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 200 is in the video communication mode or the photographing mode, the photographed and / or received video, UI, and GUI are displayed.

The display unit 251 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 251 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 251 of the terminal body.

There may be two or more display units 251 according to the embodiment of the mobile terminal 200. For example, in the mobile terminal 200, a plurality of display units may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 251 and a sensor (hereinafter, referred to as a 'touch sensor') for sensing a touch operation form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display portion 251 or a capacitance generated in a specific portion of the display portion 251 to an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the control unit 280. Thus, the control unit 280 can know which area of the display unit 251 is touched or the like.

Referring to FIG. 4, proximity sensors (not shown) may be disposed in the inner area of the mobile terminal or in the vicinity of the touch screen, which is surrounded by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The audio output module 252 can output audio data received from the wireless communication unit 210 or stored in the memory 260 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 252 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 200. [ The sound output module 252 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 253 outputs a signal for notifying the occurrence of an event of the mobile terminal 200. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 253 may output a signal for informing occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 251 or the audio output module 252 so that they may be classified as a part of the alarm unit 253.

The haptic module 254 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 254 is vibration. The intensity and pattern of the vibration generated by the hit module 254 and the like are controllable. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 254 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 254 can be implemented not only to transmit the tactile effect through direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. The haptic module 254 may include two or more haptic modules 254 according to the configuration of the portable terminal 200.

The memory 260 may store a program for the operation of the control unit 280 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 260 may store data on vibration and sound of various patterns output when a touch is input on the touch screen.

The memory 260 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 200 may operate in association with a web storage that performs a storage function of the memory 260 on the Internet.

The interface unit 270 serves as a path for communication with all external devices connected to the mobile terminal 200. The interface unit 270 receives data from an external device or supplies power to each component in the mobile terminal 200 or transmits data in the mobile terminal 200 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 270.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 200 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 200 through the port.

When the mobile terminal 200 is connected to an external cradle, the interface unit may be a path through which the power from the cradle is supplied to the mobile terminal 200, It can be a passage to be transmitted to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 280 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 280 may include a multimedia module 281 for multimedia playback. The multimedia module 281 may be implemented in the control unit 280 or may be implemented separately from the control unit 280.

The control unit 280 may perform pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 290 receives external power and internal power under the control of the controller 280 and supplies power required for operation of the respective components.

Video transmission function of mobile terminal

 According to an embodiment of the present invention, the mobile terminal 200 may be a WLAN (Wi-Fi), a Wibro (Wireless broadband), a Wimax (World Interoperability for Microwave Access), a HSDPA (High Speed Downlink Packet Access) The image display is performed through communication standard communication standards such as Bluetooth, Radio Frequency Identification (RFID), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, DLNA (Digital Living Network Alliance) And can communicate with the device 100.

According to another embodiment of the present invention, the mobile terminal 200 can communicate with the image display device 100 according to a wireless communication standard provided by a DMB or the like. According to another embodiment of the present invention, the mobile terminal 200 can communicate with the image display device 100 according to a communication standard such as ISM (Industrial Scientific Medical). In this case, the control unit 280 can convert the ISM band signal into the DMB communication standard signal.

The control unit 280 monitors whether or not a broadcast reception request is received from the user and transmits a broadcast reception request to the video display device 100 when a broadcast reception request is received from the user.

The control unit 280 monitors whether a broadcast reception request for a selected channel among the channels included in the information about the predetermined broadcast channel received from the video display device 100 is received from the user, Upon receipt of the reception request, the broadcasting terminal 100 transmits a broadcast reception request related to the selected channel to the video display device 100.

The control unit 280 also outputs video signals, audio signals, and data signals received from the video display device 100.

5A to 5C are conceptual diagrams of an image transmission system according to embodiments of the present invention.

Referring to FIG. 5A, the video display device 100 receives a broadcast-related video 510 related to a specific channel from the broadcast station 10 or the network server 20 and outputs the broadcast related video. The mobile terminal 200 receives channel information that can be received by the video display device 100 from the video display device 100 and outputs the channel information 602 and the EPG information 604.

5B, when one channel is selected from among the channels included in the channel information 602 by the user in the mobile terminal 200, the mobile terminal 200 transmits the channel information 602 related to the channel selected from the video display device 100 And receives and processes the image 610 processed to output the broadcast related image 510 in the environment of the mobile terminal 200. [

Referring to FIG. 5C, a broadcast-related image 510 related to a specific channel is output from the video display device 100. However, the mobile terminal 200 may display the broadcast- Related video related to the channel can be received from the video display device 100 and output.

Video transmission process

6 is a flowchart illustrating a video transmission process according to an exemplary embodiment of the present invention.

The transmission control unit 390 monitors whether a broadcast reception request is received from the mobile terminal 200 (S110).

In step 110, when a broadcast reception request is received from the mobile terminal 200, the transmission control unit 390 transmits information on the predetermined broadcast channel, which is stored in the storage unit 140 or received through the broadcast reception unit 105, (S120). The transmission control unit 390 can transmit the EPG information received from the data processing unit 380 to the mobile terminal 200 together with information on the broadcast channel.

The transmission control unit 390 monitors whether a broadcast reception request for a selected channel among the channels included in the information on the predetermined broadcast channel transmitted from the mobile terminal 200 to the mobile terminal 200 is received (S130).

In step 130, the transmission control unit 390 receives a broadcast reception request related to the selected channel, and receives broadcasts related to the selected channel through the broadcast reception unit 105 in step S140.

The broadcast receiving unit 105 outputs a broadcast related to the selected channel to the demultiplexing unit 310 as a stream signal. The demultiplexing unit 310 demultiplexes the stream signal into a video signal, a voice signal, and a data signal, To the video processing unit 320, the audio processing unit 370, and the data processing unit 380.

The image processing unit 320 performs image processing of the demultiplexed image signal. The video decoder 325 decodes the demultiplexed video signal and the scaler 335 performs scaling so that the resolution of the decoded video signal can be outputted from the mobile terminal 200. The image processing unit 320 decodes the decoded video signal in the mobile terminal 200, for example, MPEG-2, and encodes the decoded video signal so as to be output. The image processing unit 320 outputs the encoded image signal to the transmission control unit 390.

Further, the voice processing unit 370 performs voice processing of the demultiplexed voice signal. The voice processing unit 370 outputs the demultiplexed voice signal to the transmission control unit 390 when the demultiplexed voice signal can be decoded by the mobile terminal 200 and output. If the demultiplexed voice signal is not decodable and output by the mobile terminal 200, the voice processor 370 decodes the demultiplexed voice signal and transmits the decoded voice signal to the mobile terminal 200, such as AAC, And encodes it so as to be outputable. The voice processing unit 370 outputs the encoded voice signal to the transmission control unit 390.

In addition, the data processing unit 380 performs data processing of the demultiplexed data signal. The data processor 380 outputs the demultiplexed data signal to the transmission controller 390 when the demultiplexed data signal is decoded by the mobile terminal 200 and can be output. If the demultiplexed data signal is not decodable and output by the mobile terminal 200, the data processor 380 decodes the demultiplexed data signal. The decoded data signal is decoded by the mobile terminal 200 So as to be outputable. The data processing unit 380 outputs the encoded data signal to the transmission control unit 390 (S150).

The transmission control unit 390 transmits the video signal, the audio signal and the data signal output from the video processing unit 320, the audio processing unit 370 and the data processing unit 380, respectively, to the mobile terminal 360 (S160).

FIG. 7 is a detailed flowchart of the video, audio, and data transmission step (S160) shown in FIG. 6 according to another embodiment of the present invention.

The transmission control unit 390 converts the video signal, the audio signal, and the data signal output from the video processing unit 320, the audio processing unit 370, and the data processing unit 380, respectively, into an RF signal of the DMB communication standard (S162). For example, the transmission control unit 390 modulates the image signal, the audio signal, and the data signal output from the image processing unit 320, the audio processing unit 370, and the data processing unit 380, respectively, into RF signals of the DMB communication standard, And amplifies the modulated RF signal.

In addition, the transmission control unit 390 transmits the RF signal converted into the DMB communication standard to the mobile terminal 200 (S163).

FIG. 8 is a detailed flowchart of the video, audio, and data transmission step (S160) shown in FIG. 6 according to another embodiment of the present invention.

The transmission control unit 390 converts the video signal, the audio signal, and the data signal output from the video processing unit 320, the audio processing unit 370, and the data processing unit 380, respectively, into an RF signal of the DMB communication standard (S162).

In addition, the transmission control unit 390 converts the RF signal converted into the DMB communication standard into an RF signal in the ISM (Industrial Scientific Medical) band (S166).

In addition, the transmission control unit 390 transmits the RF signal converted into the ISM band to the mobile terminal 200 (S168).

9 is a flowchart illustrating an image transmission process according to an embodiment of the present invention.

The mobile terminal 200 monitors whether a broadcast reception request is received from the user (S210). In operation 210, when a broadcast reception request is received from the user, the mobile terminal 200 transmits a broadcast reception request to the video display device 100 in operation S220.

The video display device 100 transmits the information on the predetermined broadcast channel stored in the storage unit 140 or received through the broadcast receiving unit 105 to the mobile terminal 200 in step S230. The video display device 100 can transmit the EPG information received through the data processing unit 380 to the mobile terminal 200 together with information on the broadcast channel.

The mobile terminal 200 monitors whether a broadcast reception request for a selected channel among the channels included in the information about the predetermined broadcast channel received from the video display device 100 is received from the user (S240).

In operation 240, the mobile terminal 200 transmits a broadcasting reception request related to the selected channel to the video display device 100 (S250).

In the video display device 100, the broadcast receiving unit 105 receives the broadcast related to the selected channel (S260) and outputs the stream signal to the demultiplexing unit 310. The demultiplexing unit 310 demultiplexes the stream signal into a video signal , A voice signal, and a data signal, and outputs the signals to the image processing unit 320, the voice processing unit 370, and the data processing unit 380, respectively. The video processing unit 320, the audio processing unit 370 and the data processing unit 380 process video signals, audio signals and data signals so that they can be outputted from the mobile terminal 200 and transmit them to the transmission control unit 390 (S270) .

The transmission control unit 390 transmits the processed video signal, audio signal, and data signal to the mobile terminal 200 so as to be output from the mobile terminal 200 (S280).

The mobile terminal 200 outputs the received video signal, audio signal, and data signal (S290).

The image transmission apparatus, system and method according to an embodiment of the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified in various ways, All or a part of the above-described elements may be selectively combined.

Meanwhile, a video transmission method according to an exemplary embodiment of the present invention can be implemented as a processor-readable code on a recording medium readable by a processor included in an apparatus capable of executing an application. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium that can be read by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

10: Broadcast station 20: Network server
100: video display device 170:
200: mobile terminal 280:
320: image processor 370: audio processor
380: Data processing unit 390:

Claims (11)

(a) transmitting channel information to a mobile terminal;
(b) receiving information of a specific channel selected from the mobile terminal;
(c) receiving a stream signal corresponding to information of the selected specific channel;
(d) demultiplexing the stream signal and decoding the video signal included in the stream signal;
(e) scaling the decoded video signal based on resolution information of the mobile terminal, and encoding the scaled video signal; And
(f) transmitting the encoded video signal and voice and data signals included in the stream signal to the mobile terminal,
The step (f)
The method of claim 1, further comprising limiting a radius at which the encoded video signal, audio, and data signals are provided so that reception of the encoded video signal, audio, and data signals may be restricted according to the location of the mobile terminal . 2. The method of claim 1, wherein step (f)
Converting the encoded video signal and audio and data signals included in the stream signal into an RF signal of a DMB communication standard; And
And transmitting the RF signal converted into the DMB communication standard to the mobile terminal. 3. The method of claim 2,
Modulating the encoded video signal and audio and data signals included in the stream signal into an RF signal of a DMB communication standard; And
And amplifying the modulated RF signal. 3. The method of claim 2, wherein step (f)
Converting an RF signal converted into the DMB communication standard into an RF signal of an industrial scientific medical (ISM) band; And
And transmitting the changed RF signal to the ISM band to the mobile terminal. The method of claim 1, wherein the step (a)
Receiving a broadcast reception request from the mobile terminal; And
And authenticating the mobile terminal. A transmission control unit for transmitting channel information to a mobile terminal and receiving information of a specific channel selected from the mobile terminal; And
A demultiplexer for demultiplexing the stream signal, decoding the video signal included in the stream signal, and decoding the decoded video signal based on the resolution information of the mobile terminal And a signal processor for scaling and encoding the scaled video signal,
The transmission control unit,
And transmitting the encoded video signal and the voice and data signals included in the stream signal to the mobile terminal and limiting the reception of the encoded video signal, voice and data signals according to the position of the mobile terminal, And limits the radius at which the video signal, voice and data signals are provided. 7. The apparatus of claim 6,
Converting the encoded video signal and the voice and data signals included in the stream signal into an RF signal of a DMB communication standard and transmitting the RF signal converted into the DMB communication standard to the mobile terminal, . 8. The apparatus of claim 7,
A modulator for modulating the encoded video signal and the voice and data signals included in the stream signal into an RF signal of a DMB communication standard; And
And an amplifying unit for amplifying the modulated RF signal. 8. The apparatus of claim 7,
Converts the converted RF signal into an RF signal of an industrial scientific medical (ISM) band, and transmits the converted RF signal to the ISM band to the mobile terminal. The method according to claim 6,
Further comprising an authentication processing unit for authenticating the mobile terminal,
The transmission control unit,
And receives a broadcast reception request from the mobile terminal. A video transmission system including a mobile terminal and a video display device,
Wherein the video display device comprises:
A transmission controller for transmitting channel information to the mobile terminal and receiving channel information selected from the mobile terminal; And
Demultiplexes the stream signal, decodes a video signal included in the stream signal, and scales the decoded video signal based on the resolution information of the mobile terminal And a signal processor for encoding the scaled video signal,
The mobile terminal includes:
Receiving the channel information from the video display device, transmitting the selected channel information to the video display device,
The transmission control unit,
And transmitting the encoded video signal and audio and data signals included in the stream signal to the mobile terminal and transmitting the encoded video signal, And limits the radius at which the signal, voice, and data signals are provided.

Images