KR20090105485A - Multi-Media Offering System using HMD and Offering Method thereof - Google Patents

Abstract

PURPOSE: A multimedia providing system using an HMD and a providing method thereof are provided to secure the image quality and sound quality supplying an external device by reducing the size and weight of a connecting unit. CONSTITUTION: A multimedia related row data extracts image and voice signal with an external device supplying row data. A multimedia providing system includes a display device, a connecting unit and a multimedia providing device. A display device(101) outputs and receives an image and speech signal in the digital format applied in HMD. A connection unit(107) is comprised of the method of extension in which it supports the serial transfer signal connected to the display device. A multimedia supply apparatus(100) decodes and corresponds to the codec in which low data supports low data in which the external device provides are the digital signal.

Description

Multi-Media Offering System using HMD and its providing method

The present invention relates to a technology for transmitting a digital signal to a head mounted display by processing a video signal received by a receiving terminal in a head mounted display system, by providing a light and bulky high speed connection interface to the receiving terminal and the head mounted display The present invention relates to an apparatus for improving portability and transmitting at high speed while preventing image quality deterioration or noise that may occur in a process of transmitting the video signal, thereby providing high quality video and audio.

In recent years, with the development of various video devices, users are increasingly demanding to view images with more vivid and three-dimensional effects with respect to the images acquired through the video devices. The development of a video device that provides a three-dimensional image by modifying the method, or by connecting a variety of additional means to the image providing device to provide an image that is difficult for the user to distinguish between real and virtual.

As an example of the image providing method as described above, a three-dimensional image may be provided by simultaneously displaying on the display an image photographed at different angles using a visual difference between both eyes, or by using an additional means to change the viewing angle of the user to the whole image. By providing a cover in the form of a panorama it can provide an effect as if the user participated in the environment of the actual video.

In this case, one of the additional means is a head mounted display (HMD), the display is worn on the head of the user in the form of glasses, hats, helmets, etc. attached to the lens portion Provide video through. In particular, by decoding the video format provided by the video device connected to the HMD self-provided video has the advantage of being portable, it is possible to block both eyes of the user to the display to provide a panorama-like image to the general PMP (Portable Multimedia) Even if the screen size is significantly smaller than that of the player, it can be seen that the effect of providing a wider screen than the screen of the external external video device can enhance the sensation of virtual reality.

The detailed configuration diagram of such an HMD is described in detail with reference to FIG. 1, wherein the HMD is a multimedia providing apparatus 10 for processing raw data received by being connected to an external device and providing a video and audio signal; It may be configured as a display device 30 which is worn on the user's head and is connected to the multimedia providing apparatus 10 through a connection channel 20 to output the video and audio signals received through the connection channel 20. have.

In this case, a detailed configuration of the multimedia providing apparatus 10 may include: an external interface unit 15 connected to an external device to receive the raw data, and a first A for converting the raw data into a digital image and an audio signal. / D converter 16, a transmitter 12 for modulating a raw signal to provide the raw data to the display device 30, and the digital video and audio of the first A / D converter 16 The controller 14 may be configured to determine a codec format for a signal, provide a codec signal to the transmitter 12, and control a modulation process of the transmitter 12.

The transmission signal is transmitted to the display device 30 through the connection channel 20 as an analog signal, and the display device 30 demodulates the transmission signal to extract a video and audio signal; A second A / D converter 32 for binarizing the video and audio signals, a display 33 for outputting the video and audio signals, and a video and audio according to a driving scheme of the display 33 It may be configured as an image processor 35 for processing a signal.

In this case, the display device 30 may provide a control signal for controlling image quality and the like during the processing of the image processor 35, and may include a controller for controlling power. In addition, the multimedia providing apparatus 10 may include a user interface 13 to apply a signal to the controller 14 based on a user's input and execute a control command corresponding to the user's input to provide each device. Function is available. In addition, the display device 30 may further include a user interface to perform a function such as simple power control.

In addition, the display unit 33 may include a driver 36 for driving a display according to the video and audio signals. In this case, when the driver 36 has a digital driving method, the signal passed through the second A / D converter 32 may be provided as it is, and the driver 36 may have an analog driving method. In this case, the display apparatus 30 may further include a D / A converter 34 connected to the driver 36 and the image processor 35, and the D / A converter 34 may include the image processor ( The digital image signal provided from 35 may be converted into an analog form and provided to the driver 36.

As described above, in the conventional HMD, since the multimedia providing apparatus processes the raw data and outputs it to a display device connected through an external connection channel, the multimedia providing apparatus determines or modulates the codec format of the raw data. The loss rate of the signal is increased through a plurality of signal processing processes such as a process of receiving, demodulating and receiving a modulated signal from the display device, and converting the modulated signal to match the display driving method, thereby causing a problem of deterioration of image quality.

In addition, in the process of repeatedly separating and combining the raw data received in an analog form such as NTSC or PAL into a video signal and an audio signal, the clock synchronization process of the video and audio signals is performed by the multimedia providing apparatus and the display apparatus. In addition to increasing the configuration burden of the device and reducing the operation efficiency, the clock synchronization process is disabled after the demodulation in the display device is not performed due to noise or interference during the clock synchronization process. There was a downside.

In addition, the connection channel is generally used for composite, S-VIDEO, component cable for analog signal transmission, the complexity of the cable configuration of the connection channel as the separation characteristics of the video signal and audio signal is diversified Signal distortion or loss may occur due to interference between lines, and due to the recent increase in image quality, a sufficient transmission speed cannot be guaranteed. Downgrading the resolution signal provided by the latest equipment such as a full HD TV (Downgrade) has a problem that must be transmitted to the display device. Meanwhile, in the case of a general HMD cable to which an analog cable is applied, the volume of the corresponding cable is large and heavy, so that it is not easy to carry and another weight is generated even when used.

Accordingly, the present invention simplifies the process of processing multimedia-related raw data provided by an external connection device to output digital video and audio signals that minimize signal distortion or loss in a display device, thereby dramatically reducing the size and weight of the connection means. The purpose is to implement a multimedia providing system using HDM that reduces and guarantees the highest quality of image and sound.

In addition, the present invention provides a connection medium that can improve the signal transmission efficiency between the multimedia providing device and the display device, which is a component of the HDM to ensure the transmission speed corresponding to the image quality and sound quality provided by the external device to ensure high quality multimedia data. The purpose is to make it available.

In addition, by supporting an external interface that can change the input and output terminals to ensure compatibility with a variety of external multimedia devices, unified the display device configuration to simplify the image processing process and to output high-quality video as it is without downgrading The purpose is to provide a system for doing so.

In order to achieve the above object, the present invention is connected to an external device that provides multimedia-related raw data to extract a video and audio signal and output to the HMD, applied to the HMD, the video and audio signal A display device for receiving and outputting a digital form, a connection unit connected to the display device and configured as an extension means for supporting a serial transmission signal, and the row data if the row data provided by the external device is a digital signal. And a multimedia providing apparatus that modulates the extracted digital video and audio signals by encoding and decoding according to the selected codec in the case of analog signals and transmits them as serial transmission signals through the connection unit. It is done.

In this case, the serial transmission signal is an optical signal, a low voltage differential signal (LVDS), the connection portion is characterized in that the POF (Plastic Optical Fiber) or LVDS cable.

The display device may include a first internal interface unit connected to one port of the connection unit to receive a serial transmission signal, and a first internal interface unit connected to the first internal interface unit to extract and demodulate a carrier signal from the serial transmission signal to perform video and audio. It may include a signal receiving unit for obtaining a signal, and a display unit for outputting the video and audio signals.

The signal receiver may be connected to the first internal interface to extract a carrier signal from the serial transmission signal, and may be connected to the receiver to demodulate the carrier signal and to obtain the digital form. And a demodulator for transmitting the video and audio signals to the display unit.

In this case, the display unit is configured to display the output corresponding to the digital driving method, the display and the signal receiving unit to support the compatibility, and to drive the display digitally in response to the video and audio signals, characterized in that You can do

In addition, the display unit may include at least one OLED disposed to correspond to both eyes of the user.

The multimedia providing apparatus may include an external interface unit connected to the external device to receive raw data, a controller configured to decode the video and audio signals by decoding the codec supporting the raw data, and the video and audio signals. And a second internal interface unit configured to perform a signal processing procedure for the serial transmission signal, and a second internal interface unit connected to one port of the connection unit to provide the serial transmission signal provided by the signal transmission unit to the connection unit. It may be characterized by.

In this case, the external interface unit includes at least one or more of HDMI, DVI, USB, RS-232C, D-SUB terminal, component terminal or S-VIDEO terminal, the control unit is a codec unit that supports the codec The codec unit may include at least one of DivX, XviD, WMV9, X-264, H.264, and MPEG-1 / 2/4.

When the raw data is an analog signal, the multimedia providing apparatus may further include a decoder configured to provide the controller by encoding the raw data with a codec supported by the controller.

The signal transmitter may include a modulator for modulating the video and audio signals to generate a carrier signal, and a transmitter for converting the carrier signal into a serial transmission signal and providing the second signal to the second internal interface. have.

A multimedia providing system for extracting video and audio signals and outputting them to an HMD connected to an external device providing multimedia-related raw data according to another embodiment of the present invention, which is applied to the HMD and converts the video and audio signals into a digital form. Modulating the raw data received through a display device connected to the display device and connected to the display device, the connecting unit comprising an extension means supporting serial transmission signals, and a digital connector connected to the external device. And a digital signal processing adapter converting the serial transmission signal for transmission to the display device through the connection unit.

In this case, the digital signal processing adapter may include a first universal interface to receive the raw data, including the digital connector supporting a terminal or a port of the external device, and the raw data received from the first universal interface. A modulator for modulating to generate a carrier signal, and a transmitter for converting the carrier signal provided by the modulator into a serial transmission signal; And a first internal interface unit receiving the serial transmission signal and transmitting the serial transmission signal to the display device through the connection unit.

At this time, the first universal interface may be characterized in that it supports HDMI, DVI, USB, RS-232C, D-SUB terminal.

In addition, when the raw data provided by the external device is an analog, an analog connector connected to the analog terminal of the external device, the low data received from the analog connector is provided to the digital signal processing means for encoding And an analog signal processing adapter, wherein the analog signal processing adapter is configured to encode the raw data received through the analog connector with a predetermined codec. And a second universal interface unit for transmitting the encoded raw data provided by the decoder unit to the digital signal processing adapter.

The display device may further include a second internal interface unit connected to one port of the connection unit to receive a serial transmission signal, and a second internal interface unit connected to the second internal interface unit to extract and demodulate a carrier signal from the serial transmission signal to perform image decoding. And a signal receiver for acquiring an audio signal and a display for outputting the video and audio signals.

In this case, the signal receiver is connected to the second internal interface unit to extract a carrier signal from the serial transmission signal, and connected to the receiver to demodulate the carrier signal, the digital form obtained through the demodulation And a demodulator for transmitting the video and audio signals to the display unit.

The display unit may include a display for outputting a digital driving method, a driver supporting compatibility with the display and a signal receiving unit, and a driver for driving the display digitally in response to the video and audio signals. You can do In this case, the display may include at least one OLED disposed to correspond to both eyes of the user.

In addition, the serial transmission signal may be an optical signal, LVDS, and the connection may be a POF or LVDS cable.

In addition, the present invention provides a multimedia providing method for providing a display device configured with an HMD by signal processing the received raw data connected to an external device for providing multimedia-related raw data according to another embodiment of the present invention, the external A first step of recognizing whether the raw data provided by the device is analog or digital; a second step of extracting the video and audio signals by decoding the codec corresponding to the raw data when the raw data is digital; And a third step of modulating a voice signal to generate a carrier signal, a fourth step of converting the carrier signal to a serial transmission signal for transmission to the display device, and connecting means for connecting the multimedia device and the display device. It characterized in that it comprises a fifth step of transmitting the serial transmission signal through It shall be.

In this case, when the row data is analog in the second step, the row data may be further encoded and decoded by a predetermined codec supported by the multimedia providing apparatus.

In addition, the method may further include a sixth step of displaying the display signal on the display based on data obtained by extracting and demodulating a carrier signal from the serial transmission signal received by the display apparatus in the fifth step.

The present invention minimizes the steps of analog-to-digital conversion in the process of receiving multimedia-related raw data provided by an external connection device, and makes the object of signal transmission and processing of internal components limited to only digital signals. By reducing the signal loss and distortion that may occur during the repetitive conversion process of the signal, it is effective to ensure the preservation of the original data.

In addition, the present invention simplifies the process of processing multimedia-related raw data provided by an external connection device to output digital video and audio signals with minimal signal distortion or loss in the display device, thereby dramatically reducing the size and weight of the connection means. It is effective in guaranteeing the maximum image quality and sound quality provided by external devices.

In addition, the present invention not only prevents signal interference and noise between the multimedia providing apparatus and the display apparatus as components, but also improves the signal transmission efficiency by applying a high-speed transmission and transmission medium that conforms to the digital method. It is effective in preventing buffering or deterioration of image quality that occurs in the process of receiving and processing a large amount of high quality video and audio provided.

In addition, by using an OLED as a display module of the display device to reduce the weight, by using a digital signal processing means that minimizes the function of the multimedia providing device to minimize the overall weight burden of the present invention can be effectively reduced There is an effect that can increase the convenience.

In addition, by supporting an external interface that can change the input and output terminals to ensure compatibility with a variety of external multimedia devices, unified the display device configuration to simplify the image processing process and to output high-quality video as it is without downgrading It is effective.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram showing an application of the multimedia providing system using the HMD according to the present invention, the multimedia providing system using the HMD is largely worn on the user's head in the form of glasses, hats, helmets, etc. And a display device 101 including an HMD for outputting a voice signal and an external device providing a multimedia source to acquire multimedia-related raw data, and processing the raw data into a digital image and audio signal. It may be configured as a multimedia providing device 100 to provide.

In this case, the connection unit 107 may be configured to connect the multimedia providing device and the display device to transmit digital video and audio signals. The connection unit 107 is composed of an HDMI or DVI cable for digital video and audio signal transmission, and is resistant to signal distortion and interference, and guarantees high speed transmission through serial transmission.

In addition, the multimedia providing apparatus includes an external interface unit that can be connected to various external devices, and processes images provided by the DMB 104, the HD TV 105, and various game machines 106 according to their internal codecs. The multimedia device 100 may output raw data stored in the external storage memory itself by being connected to an external storage memory such as SD, CF memory card 102 or USB 103. ) May be self-loaded and output to the display apparatus 101.

The external interface unit includes various external connection ports to support this. For example, the external interface unit guarantees high-speed transmission for minimizing buffering for high-quality images provided by the DMB 104 or the HD TV 105. It supports DVI or HDMI, and may have a component terminal and an S-VIDEO terminal to support a conventional analog cable.

In addition, a USB or a slot may be provided to load raw data from the external storage memory. In addition, the D-SUB terminal for supporting multimedia data output from the external PC to the monitor and the external PC or the terminal connected to the communication network can be easily controlled to indirectly access the communication network through the external PC or the terminal. Multimedia content may be provided through the display device, including the RS-232C terminal.

The multimedia-related raw data received through the connection with the external device as described above is processed by the multimedia providing device and output as data suitable for the display device standard. This process will be described in detail with reference to FIG. 3.

3 is a block diagram illustrating a detailed configuration diagram and a connection method of the multimedia providing apparatus and the display apparatus configuring the multimedia providing system using the HMD according to the present invention.

According to the present invention, in order to minimize data loss, noise, and distortion caused by continuous processing and signal transmission process of various raw data received from an external device in the system itself, original data may be used for data received in digital form. To solve the above problem by minimizing the processing of the signal and unifying the signal transmission stage and the output stage, the digital transmission and output is made consistently for the signal transmission system following the digital conversion once for the data received in analog form. It prevents data loss that can occur between continuous analog and digital conversions.

3, the multimedia providing apparatus 100 includes an external interface unit 111 to be connected to various external devices, and the external interface unit 111 as described above with reference to FIG. 2. ) Includes terminals and slots that support both analog and digital signals in order to receive raw data from the external device.

In this case, the external interface 111 is connected to a decoding unit 112 for converting the analog signal into digital data, and the decoding unit 112 is received from an analog terminal of the external interface 111. Processed raw data and provide it in digital form. In addition, the raw data received from the digital terminal of the external interface 111 can be provided as it is in the original form without going through the decoding unit 112 through a switching process.

In order to process the raw data passed through the external interface 111 and the decoding unit 112 in a form suitable for output to the display device 101, a control unit including a codec unit for performing a signal processing through digital filtering ( 113). In addition, the control unit 113 controls the signal transmission unit 116 that carries the video and audio signals passed through the codec unit to provide the raw data processed to the display device.

In this case, when the raw data input through the external device is a digital signal, the controller 113 is data that has already been subjected to DivX, XviD, WMV9, X-264 video and audio compression, or received from a DMB or HD TV. When the raw data, which has been digitally processed by a specific codec such as 264 or MPEG-1 / 2/4 format real-time image processing data, is received, the control unit 113 recognizes the support codec of the raw data and transmits the codec through the codec unit. The video and audio signals are separated from the raw data and provided to the signal transmitter 116.

In addition, when the raw data input through the external device is a general analog signal, the controller 113 controls the decoding unit 112 to perform video and audio compression using a codec form supported by the codec unit. The control unit 113 reduces the load by reducing the capacity of data for reception and processing, and controls the codec unit to separate and extract the video and audio signals from the compressed raw data, and provide the extracted signal to the signal transmitter 116.

In addition, the controller 113 may store the raw data that has undergone the signal processing in the memory unit 114 so that the controller 113 loads the raw data and provides the raw data to the display apparatus 101 at any time.

The signal transmitter 116 includes a modulator 117 and a transmitter 118, and the modulator 117 carries a carrier suitable for transmitting the video and audio signals to the display apparatus 101 together with a synchronization signal. The carrier signal is modulated into a signal, and the carrier signal passed through the modulator 117 is processed as a digital serial transmission signal to ensure high-speed transmission through the transmitter 118.

That is, the transmitter 118 transforms the signal into a suitable signal according to the cable type and transmission method of the connection unit 107 connecting the multimedia providing apparatus 100 and the display apparatus 101, and the multimedia providing apparatus 100 is And a first internal interface unit 119 for supporting a connection interface with the connection unit 101.

In this case, the connection unit 107 is a real-time process using a cable (hereinafter referred to as LVDS cable) or a plastic fiber (POF: Plastic Optical Fiber, POF cable) that supports Low Voltage Differential Signaling (LVDS) It supports to receive the image of the DMB or HD TV that requires high-speed transmission without buffering.

Accordingly, the transmitter 118 generates and transmits a low voltage differential signal with respect to the carrier signal when the connector 107 is configured as the LVDS cable, and the display apparatus 101 receives the receiver 135 for receiving the signal. And separately extract the video and audio signals received from the LVDS cable. At this time, the receiver 135 can easily distinguish between noise and signal distortion inserted between transmissions through the connection unit 107 based on low voltage differential signals for video and audio signals, thereby preventing degradation of video and audio as much as possible. Simple processing ensures high transmission speed.

In addition, the POF cable also conveys the serial transmission signal by using the optical signal through the total reflection characteristics and high bandwidth, and guarantees a high transmission speed so that the multimedia providing device easily carries various multimedia providing sources to the display device and is disconnected. You can provide a clear image without.

In addition, the display device includes a second internal interface unit 131 for receiving the serial transmission signal by supporting an interface with the connection unit 107. In addition, the display apparatus 101 is connected to the serial transmission signal received through the second internal interface unit 131 to the second internal interface unit 131, and processes a carrier signal from the serial transmission signal. And a signal receiver 133 for restoring the signal.

In this case, the signal receiver 133 demodulates the carrier signal and the receiver 135 extracting the carrier signal from the serial transmission signal that receives the carrier signal received through the second second internal interface unit 131. And a demodulator 134 for restoring the video and audio signals which are the original signals.

The display apparatus 101 includes a display unit 136 and a speaker for outputting video and audio signals, and the video and audio signals restored from the demodulator 134 are provided to the display unit 136 to provide the Outputs video and audio for video and audio signals.

In this case, the display unit 136 is compatible with the demodulator 134 and the display unit 136 in order to output the demodulated video and audio signals in a digital form, and drives the display unit 136 in a digital control manner. The driver 137 can be provided.

In addition, the display unit 136 is composed of an OLED, by reducing the weight burden of the display device 101 due to the backlight of the conventional LCD can only increase the portability of the multimedia system using the HMD according to the present invention. In addition, it is possible to minimize the error occurrence rate of the original signal by solving a signal loss problem that may occur by omitting the analog encoding process for the demodulated signal according to the digital driving method.

In addition, the multimedia providing apparatus 100 according to an exemplary embodiment of the present invention includes a user interface 115 for providing a control signal to the controller based on a user's input to control image quality, adjust volume, and adjust video and audio. The control signal corresponding to the section setting or the control of the power controller 132 that controls the power of the display apparatus 101 may be generated. In this case, the controller 113 provides an image and audio signal corresponding to the control signal to the display apparatus 101.

In addition, the display apparatus 101 also includes an interface unit capable of receiving simple inputs such as simple power control or video and audio settings from a user, and a control unit that performs internal control of the display apparatus based on the input of the interface unit. It can be obvious.

On the other hand, the display device is connected to the external devices described above in Figure 2 by using a digital signal processing adapter in the form of a connection port to simplify the signal processing process of the multimedia providing device to add a weight burden due to the multimedia providing device As a result, the portability can be improved.

As shown in FIG. 4, the digital signal processing adapter 200 includes a digital connector 201 and supports a digital terminal 401 of the source providing unit 400 for providing a digital multimedia source. Through the connection unit 107, a second internal signal is processed through the universal interface unit 202, the second signal transmitter 203 which performs the same function as the signal transmitter, and the second signal transmitter 203. And a third internal interface 206 for conveying to the interface unit 131. In this case, the second modulator 205 and the second transmitter 204 constituting the second signal transmitter 203 correspond to the functions of the modulator and the transmitter of the multimedia providing apparatus, respectively. In addition, the signal transmission process through the third internal interface unit 206 is the same as the signal transmission process of the first internal interface unit and the second internal interface unit described above.

In addition, when the source providing unit 400 provides an analog signal, an analog connector 301 connected to the analog terminal 402 of the source providing unit, and an analog form received through the analog connector 301. A second universal interface unit including a decoder unit 302 for digital signal processing of video and audio signals, and a connection terminal connected to the digital connector 201 and compatible with the first universal interface unit 202; The analog signal processing adapter 300 including the 303 may be connected to the digital connector 201 of the digital signal processing adapter 200 to convert an analog signal into a digital form and provide the digital signal.

5 is a flowchart illustrating a multimedia providing process of a multimedia providing system using an HMD according to the present invention. Referring to FIG. 5, the multimedia providing apparatus provides an interface connected to an external device to receive raw data by distinguishing whether a multimedia source provided by the external device is an analog signal or a digital signal.

When the raw data is a digital signal, serial transmission for modulating and serially transmitting the video and audio signals in order to extract a video and audio signal by performing a decoding process corresponding to the codec supported by the raw data, and to transmit the video and audio signals to the display device. Signal processing.

The display apparatus extracts a carrier signal from the serial transmission signal received through the signal processing process and extracts a video and audio signal through a demodulation process. Thereafter, the video and audio signals are output to a display included in the display device.

In addition, when the raw data is an analog signal, the serial transmission signal processing process is performed after the encoding and decoding process is performed using a codec supported by the multimedia providing apparatus, and then the display apparatus is the same as the digital data processing method. And digitally output the raw data in analog form to the display.

1 is a detailed configuration diagram of a conventional HMD.

Figure 2 is an application example for the multimedia providing system using the HMD according to the present invention

3 is a block diagram illustrating a detailed configuration diagram and a connection method of a multimedia providing apparatus and a display apparatus according to the present invention;

4 is a detailed configuration diagram of digital and analog signal processing means according to the present invention;

5 is a flowchart illustrating a multimedia providing method using an HMD according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

100: multimedia providing device 101: display device

102: SD, CF memory card 103: USB

104: DMB 105: HD TV

106: game machine 107: connection portion

111: external interface unit 112: decoding unit

113: control unit 114: memory unit

115: user interface 116: signal transmission unit

117: modulator 118: transmitter

131: second internal interface unit 132: power control unit

133: signal receiver 134: demodulator

135: receiving unit 136: display unit

137: driver 200: digital signal processing adapter

201: digital connector 202: first universal interface

203: second signal transmitter 204: second transmitter

205: second modulation unit 206: third internal interface unit

300: analog signal processing adapter 301: analog connector

302: decoder unit 303: second universal interface unit

400: source provider 401: digital terminal

402: analog terminal

Claims (31)

In the multimedia providing system that is connected to an external device that provides multimedia-related raw data to extract the video and audio signals to the HMD, A display device applied to the HMD and receiving and outputting the video and audio signals in a digital form; A connection part connected to the display device and configured as an extension means for supporting a serial transmission signal; When the raw data provided by the external device is a digital signal, the raw data is decoded corresponding to the codec supported by the raw data. When the raw data is an analog signal, the digital video and audio signals are modulated by encoding and decoding according to the selected codec. Multimedia providing device for transmitting as a serial transmission signal through the connection Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 1, The serial transmission signal is an optical signal, LVDS (Low Voltage Differential Signal) characterized in that the multimedia providing system using HMD. The method of claim 1, The connecting unit is a multimedia optical system using HMD, characterized in that the POF (Plastic Optical Fiber) or LVDS cable. The method of claim 1, The display device A first internal interface connected to one end of the connection to receive a serial transmission signal; A signal receiver connected to the first internal interface to extract and demodulate a carrier signal from the serial transmission signal to obtain the video and audio signals; A display unit for outputting the video and audio signals Multimedia providing system using an HMD, comprising a. The method of claim 4, wherein The signal receiver A receiving unit connected to the first internal interface unit to extract a carrier signal from the serial transmission signal; A demodulator connected to the receiver to demodulate the carrier signal and to transmit the digital image and audio signal obtained through the demodulation to the display unit; Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 4, wherein The display unit A display configured to output a digital driving scheme; A driver that supports compatibility of the display and the signal receiver and drives the display digitally in response to the video and audio signals. Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 4, wherein The display unit System for providing a multimedia using HMD, characterized in that it comprises at least one OLED disposed to correspond to both eyes of the user. The method of claim 1, The multimedia providing device An external interface unit connected to the external device to receive raw data; A controller which decodes the video and audio signals by decoding the codec supporting the raw data; A signal transmitter for modulating the video and audio signals and performing a signal processing procedure for the serial transmission signal; A second internal interface unit connected to one port of the connection unit to provide a serial transmission signal provided by the signal transmission unit to the connection unit; Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 8, The external interface unit A multimedia providing system using an HMD, characterized in that it comprises at least one of HDMI, DVI, USB, RS-232C, D-SUB terminal, component terminal or S-VIDEO terminal. The method of claim 8, The control unit includes a codec unit for supporting the codec, wherein the codec unit supports at least one or more of DivX, XviD, WMV9, X-264, H.264, MPEG-1 / 2/4 Multimedia providing system using. The method of claim 8, The multimedia providing device If the raw data is an analog signal, the decoder to encode the raw data with a codec supported by the controller to provide to the controller Multimedia providing system using an HMD, characterized in that it further comprises. The method of claim 8, The signal transmitter A modulator configured to generate a carrier signal by modulating the video and audio signals; Transmitter for converting the carrier signal into a serial transmission signal for providing to the second internal interface unit Multimedia providing system using an HMD, characterized in that consisting of. In the multimedia providing system that is connected to an external device that provides multimedia-related raw data to extract the video and audio signals to the HMD, A display device applied to the HMD and receiving and outputting the video and audio signals in a digital form; A connection part connected to the display device and configured as an extension means for supporting a serial transmission signal; A digital signal processing adapter for modulating the raw data received through a digital connector connected to the external device and converting the raw data into a serial transmission signal for transmission to the display device through the connection unit. Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 13, The digital signal processing adapter A first universal interface for receiving the raw data, including the digital connector supporting a terminal or a port of the external device; A modulator configured to generate a carrier signal by modulating the raw data received from the first universal interface; A transmitter for converting the carrier signal provided by the modulator into a serial transmission signal; A first internal interface unit which receives the serial transmission signal and transmits the serial transmission signal to the display apparatus through the connection unit; Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 14, The first universal interface unit Multimedia providing system using HMD, characterized in that HDMI, DVI, USB, RS-232C, D-SUB terminal is supported. The method of claim 13, An analog connector connected to an analog terminal of the external device when the raw data provided by the external device is analog; An analog signal processing adapter for encoding the raw data received from the analog connector and providing the encoded raw data to the digital signal processing means; Multimedia providing system using an HMD, characterized in that it further comprises. The method of claim 16, The analog signal processing adapter A decoder unit encoding the raw data received through the analog connector with a preset codec; A second universal interface unit for transmitting the encoded raw data provided by the decoder unit to the digital signal processing adapter; Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 13, The display device A second internal interface unit connected to one port of the connection unit to receive a serial transmission signal; A signal receiver connected to the second internal interface to extract and demodulate a carrier signal from the serial transmission signal to obtain the video and audio signals; A display unit for outputting the video and audio signals Multimedia providing system using an HMD, comprising a. The method of claim 18, The signal receiver A receiving unit connected to the second internal interface unit to extract a carrier signal from the serial transmission signal; A demodulator connected to the receiver to demodulate the carrier signal and to transmit the digital image and audio signal obtained through the demodulation to the display unit; Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 19, The display unit A display configured to output a digital driving scheme; A driver that supports compatibility of the display and the signal receiver and drives the display digitally in response to the video and audio signals. Multimedia providing system using an HMD, characterized in that consisting of. The method of claim 20, The display is System for providing a multimedia using HMD, characterized in that it comprises at least one OLED disposed to correspond to both eyes of the user. The method of claim 13, The serial transmission signal is an optical signal, LVDS multimedia providing system, characterized in that. The method of claim 13, The connection unit is a multimedia providing system using an HMD, characterized in that the POF or LVDS cable. A multimedia providing method for providing a display device configured with an HMD by signal processing the received raw data, connected to an external device providing multimedia related raw data. A first step of recognizing whether the raw data provided by the external device is analog or digital; A second step of extracting a video and audio signal by decoding the codec corresponding to the raw data when the raw data is digital; Generating a carrier signal by modulating the video and audio signals; Converting the carrier signal into a serial transmission signal for transmission to the display device; A fifth step of transmitting the serial transmission signal through a connection means connecting the multimedia apparatus and the display apparatus; Multimedia providing method using an HMD, characterized in that consisting of. The method of claim 24, In the second step And encoding and decoding the raw data with a predetermined codec supported by the multimedia providing apparatus when the raw data is analog. The method of claim 24, In the fifth step And displaying a display on a display based on data obtained by extracting and demodulating a carrier signal from the serial transmission signal received by the display apparatus. The method of claim 26, The display is a multimedia providing method using an HMD, characterized in that consisting of OLED. The method of claim 24, The serial transmission signal is an optical signal, LVDS multimedia providing system, characterized in that. The method of claim 24, The connecting means is a multimedia providing system using an HMD, characterized in that the POF or LVDS cable. The method of claim 24, The external interface unit A multimedia providing system using an HMD, characterized in that it comprises at least one of HDMI, DVI, USB, RS-232C, D-SUB terminal, component terminal or S-VIDEO terminal. The method of claim 24, The codec supports at least one or more of DivX, XviD, WMV9, X-264, H.264, MPEG-1 / 2/4.

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