KR100949297B1 - Radio transmission system of moving picture having high resolution - Google Patents

Abstract

PURPOSE: A wireless transmission system of high resolution video is provided to transceive high quality video data, to display the data on a screen, to prevent the misalignment of audio data and video data. CONSTITUTION: A wireless transmission system of high resolution video includes a wireless transmitter(100) and a wireless receiver(500). The wireless transmitter transmits video data displayed on a computer(200) screen by a non-compression method using UWB band. The wireless receiver receives non-compression wireless video data of UWB band to display a display device connected with an interface unit.

Description

Radio transmission system of moving picture having high resolution using uncompressed video

The present invention relates to a wireless transmission system of high-definition video, and more particularly, to a large screen LCD / LED, PDP, projector, etc. using UWB frequency band without compressing a high-definition screen and high-quality video of Full HD. The present invention relates to a wireless transmission system of high resolution video using an uncompressed method for transmitting and displaying.

With the development of semiconductor technology, communication and image processing technology, broadcasting is gradually becoming higher quality and larger.

Conventional CRT (Cathode Ray Tube) CRTs are being replaced by LCD / LED (Liquid Crystal Display / Light-Emitting Diode Display), PDP (Plasma Display Panel), projector TV, etc., and the videos displayed through them also have high resolution. It is being replaced by high quality video.

Such display devices are used not only for broadcasting output such as airwaves, but also for meetings or education in public offices, research institutes, conference rooms, lecture rooms, etc. To be displayed.

In general, a computer and a display device are connected through a wire. The wired connection is a problem that complicates the installation and modification of the computer and the display device due to cable handling problems, hinders aesthetics, and increases maintenance costs due to cable breakage. There was this.

In accordance with these problems, a device for wirelessly connecting a computer and a display device has been developed and used. For wireless transmission and reception, a computer and a display apparatus are provided with a wireless transmission and reception device for transmitting and receiving wireless data. The wireless transmission and reception device typically compresses video data and transmits and receives using a 2.4 GHz frequency band, which is a Bluetooth frequency band at a short range. Video data is divided into video data and audio data. As the video data and audio data are compressed and transmitted, loss of data occurs during compression and decompression, resulting in loss of video on the display device. The screen looks broken, and the video and audio often do not match.

Recently, a method of wirelessly transmitting / receiving at a short distance by using a non-compression method without compressing video data has been proposed. In the case of transmitting and receiving video data through the conventional uncompressed video transmission device, Inconsistencies occur, and transmission and display problems still remain when high quality or FUL HD (High-Definition) quality video is transmitted due to limitations of transmission speed and capacity.

In addition, the conventional conventional radio transceiver does not have a function for supporting the wireless Internet, there is a problem that its use is limited.

Accordingly, the present invention has been proposed to solve the above-mentioned problems of the prior art, and an object of the present invention is to enable high-quality video data transmission and reception using a non-compression method, and video and audio data are inconsistent. The present invention provides a wireless transmission system of a high resolution video using an uncompressed method that can prevent the phenomenon.

Another object of the present invention is to provide a wireless transmission system that can expand the scope of use by enabling a wireless Internet function using a wireless data transmission and reception system.

The wireless transmission system of a high resolution video according to the present invention for achieving the above object is a device for transmitting and receiving high resolution video using short-range wireless communication, the high resolution video data transmitted from the video input device connected through the interface unit through the interface unit A wireless transmitter for transmitting to a connected computer and displaying the same on a computer screen, and wirelessly transmitting the moving picture data displayed on the computer screen to the outside using a UWB band; And a wireless receiver for receiving and demodulating uncompressed wireless video data of the UWB band transmitted from the wireless transmitter and transmitting the demodulated data to a display device connected to an interface unit.

The wireless transmitter has a USB communication unit for transmitting and receiving video data with a computer, an interface unit including an RCA communication unit for receiving video data from a video input device through RCA communication, and capturing an image of video data input through the interface unit. It comprises an image capture unit for transmitting to the computer via a USB communication unit, a wireless communication unit for wirelessly transmitting uncompressed wireless video data of the UWB band transmitted from the computer via the USB communication unit, and a central processing unit for controlling each component. .

The USB communication unit includes a USB 1 port for transmitting video data captured through the image capturing unit to a computer, and a USB 2 port for receiving uncompressed wireless video data of the UWB band transmitted from the computer.

Meanwhile, the wireless receiver classifies and distributes uncompressed wireless video data of UWB frequency band wirelessly transmitted from the wireless transmitter by demodulating the video and audio data included in the video data demodulated through the wireless communication unit. A video output unit for transmitting and outputting the video / audio distribution unit, and video data distributed and transmitted through the video / audio distribution unit to a display device through a DVI port or an RGB port and through the video / audio distribution unit. It includes an interface unit having an audio output unit for outputting the voice data to the speaker of the display device, and a central processing unit for controlling the respective components.

The interface unit is provided with a LAN communication unit for performing Internet communication connected to the external wired Internet, the wireless communication unit transmits the Internet data received through the LAN communication unit to the wireless transmitter, the Internet data received from the wireless transmitter It is transmitted to the Internet through the LAN communication unit to relay the Internet communication of the wireless transmitter.

The computer recognizer includes a wireless transmitter, a video input device connected through the wireless transmitter and an interface unit, a wireless receiver for transmitting and receiving wireless data with the wireless transmitter, and a display device connected to the interface unit of the wireless receiver as an external device. And a wireless data converter converting the high resolution video data transmitted from the interface unit of the wireless transmitter into uncompressed wireless video data of the UWB band and transmitting the uncompressed wireless video data to the interface unit of the wireless transmitter. A wireless transmission control section for setting a wireless data change environment of moving picture data is provided.

The wireless transmission control unit includes an input selection module for selecting an input device for moving image data input to a wireless transmitter, a resolution adjusting module for adjusting a resolution of a moving image transmitted to the wireless receiver and displayed on a display device, and through the wireless transmitter. A wireless communication setting module for setting a wireless communication environment of wireless data transmitted to the wireless receiver, and a screen display module for displaying the video data of the resolution adjusted by the resolution control module on the screen of the computer.

A video input device for transmitting video data to the wireless transmitter includes any one of a computer, a DVD, and an image apparatus. A display device for displaying video data transmitted from the wireless receiver is one of LCD / LED, PDP, and projector. It is preferable to comprise either.

The wireless transmission system of high resolution video using the uncompressed method according to the present invention transmits and receives video data in an uncompressed manner using the UWB band so that data loss due to compression and decompression does not occur, thereby smoothly transmitting and receiving high quality video data. It can be displayed on the screen, and there is an effect that can prevent the phenomenon of video data and audio data inconsistency.

In addition, the wireless transmission system according to the present invention can extend the scope of use by connecting to the wired Internet and perform a wireless LAN function, there is an effect that can be utilized as a complex device for a variety of uses, such as a USB hub.

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

1 is an overall network connection diagram of a wireless transmission and reception system according to an embodiment of the present invention.

As shown in FIG. 1, another wireless transceiver according to the present invention includes a wireless transmitter 100 and a playerless receiver 500 that transmit and receive video data through short-range wireless communication in an uncompressed manner.

The wireless transmitter 100 receives a video from a video input device such as a computer 200 such as a PC 201 or a notebook 202, a DVD 300, or various video devices 400, and then captures a video. And transmits the uncompressed wireless video data converted through the computer 200 to the wireless receiver 500 wirelessly.

The wireless receiver 500 receives the wireless data transmitted from the wireless transmitter 100 and converts the original high resolution video, audio, or high quality video data into the LCD / LED 600, the PDP 700, and the projector 800. It is a device that can be displayed by transmitting to a display device, such as. In addition, the wireless receiver 500 is connected to the wired Internet 900 so that the wireless transmitter 100 can enable the wireless Internet via the wireless receiver 500.

In the embodiment of the present invention, the radio transmitter 100 and the radio receiver 500 use UWB (Ultra-WideBand) frequency band, UWB is very compared to the existing spectrum at a speed of 100Mbps or more in the 3.1 ~ 10.6GHz band It is a short-range wireless communication technology that realizes high speed communication at low power over a wide band. This high transmission speed of several hundred Mbps of UWB allows high-quality video data to be transmitted and received without difficulty, but it is suitable as a local area personal network because there is a limit to be utilized as a public network due to its low output. In the embodiment of the present invention, the wireless transmitter 100 and the wireless receiver 500 perform short-range wireless communication using a frequency band of 6 GHz among the UWB frequency bands.

2 is a block diagram of a radio transmitter according to an embodiment of the present invention.

As shown in FIG. 2, the wireless transmitter 100 captures an image of an interface 120 receiving high resolution video data from a video input device and capturing an image of video data input through the interface 120. The wireless receiver receives the uncompressed wireless video data of the UWB band from the computer 200 which converts the video data captured by the image capture unit 130 to the uncompressed wireless video data of the UWB band. It comprises a wireless communication unit 140 for wireless transmission to the 500, and the central processing unit 110 for controlling the operation of each component.

The interface unit 120 includes a USB communication unit 121 for transmitting and receiving data to and from the computer 200, and an RCA communication unit 122 for receiving video data from the DVD 300 or various video devices 400. Meanwhile, the USB communication unit 121 includes a USB 1 port 121a for transmitting video data captured through the image capturing unit 130 to the computer 200, and a ratio of UWB bands converted by the computer 200. A USB 2 port 121b for receiving compressed wireless video data is provided.

In an embodiment of the present invention, the UWB band uncompressed wireless video data is converted through the computer 200. The USB 1 port 121a of the USB communication unit 121 is a video on the computer 200. The USB 2 port 121b serves to receive the uncompressed wireless video data of the UWB band converted from the computer 200. That is, the wireless transmitter 100 inputs from a video input device such as a computer 200, a DVD 300, an image device 400, or the like through the USB communication unit 121 or the RCA communication unit 122 of the interface unit 120. After capturing the video data through the image capturing unit 130, it is transmitted to the computer 200 through the USB 1 port 121a of the USB communication unit 121, and the USB 2 port 121b of the USB communication unit 121. Receives the uncompressed wireless video data of the UWB band converted by the computer 200 and transmits the uncompressed wireless video data to the wireless communication unit 140, and the wireless communication unit 140 transmits the uncompressed wireless video data of the corresponding UWB band to the wireless receiver 500. Enable wireless transmission to The image catcher unit 130 for capturing the video data of the wireless transmitter 100 uses a commercially available image capture chip, and the wireless communication unit 140 that transmits the wireless video data also follows a conventional configuration. Will be omitted.

3 is a block diagram of a radio receiver according to an embodiment of the present invention.

As shown in FIG. 3, the wireless receiver 500 receives a UWB band uncompressed wireless video data transmitted from the wireless transmitter 100 and demodulates the original video data into a wireless communication unit 540 and the wireless communication unit. The video / audio distribution unit 530 for distributing the video data and the audio data of the demodulated video data through 540 and transmitting them to the interface unit 520, and the video / audio distribution unit 530. And an interface unit 520 for transmitting and outputting image and audio data to a display device such as an LCD / LED / PDP / projector (600, 700, 800).

The wireless communication unit 540 receives the uncompressed wireless video data of the UWB band wirelessly transmitted from the wireless transmitter 100, demodulates the original video data, and transmits it to the video / audio distributor 530. The voice distributor 530 separates the video and audio of the video data demodulated by the wireless communication unit 540 and transmits the video and audio to the interface unit 520.

The interface unit 520 transmits the image data distributed from the image / audio distribution unit 530 to a display device such as an LCD / LED / PDP / projector 600, 700, 800, and the like to display the DVI port ( 521, an audio output unit 522 for transmitting the audio data distributed from the video / audio distribution unit 530 to the speakers 610, 710, and 810, such as the RGB port 521b. ), A LAN communication unit 523 connected to the wired Internet 900 to perform internet communication, and a USB communication unit 524 to transmit and receive data with other external devices.

The LAN communication unit 523 is connected to the wired Internet 900 to convert the data transmitted from the Internet network to the wireless Internet data of the UWB band through the wireless communication unit 540 to transmit to the wireless transmitter 100, the wireless transmitter ( The wireless Internet data of the UWB band transmitted from the 100 is transmitted to the Internet 900 to serve as a wireless communication repeater. Therefore, the computer 200 connected to the wireless transmitter 100 through the USB communication can perform the wireless Internet.

Hereinafter, a computer 200 connected through the wireless transmitter 100 and the USB communication unit 121 to convert video data into uncompressed wireless video data of the UWB band will be described.

4 is a block diagram of a computer connected to a wireless transmitter according to an embodiment of the present invention.

As shown in FIG. 4, the computer 200 connected through the wireless transmitter 100 and the USB communication unit 121 according to an embodiment of the present invention has an input device 220 such as a keyboard or a mouse as in a conventional computer. And an interface unit 240 including an output device 230 such as a monitor and a printer, a USB communication unit 241 for communication with an external device, and a LAN communication unit 242 for internet communication, and an operating system program. And a central processing unit 210 for controlling the operation of the components.

The USB communication unit 241 of the interface unit 240 includes a USB 1 port 241a for receiving video data from the wireless transmitter 100 and wireless Internet data in a UWB band converted by the computer 200. USB 2 port 241b for transmitting to the device is provided.

On the other hand, the storage device 250 includes a device recognition unit 253 for recognizing an external device connected to the interface unit 240, a wireless data conversion unit 252 for converting the video data into wireless video data of the UWB band and And a wireless transmission control unit 254 for setting a wireless data change environment of the video data converted into wireless data through the wireless data conversion unit 252.

The device recognition unit 253 is a wireless transmitter 100 connected through the interface unit 240, various video input devices connected through the wireless transmitter 100 and the interface unit 120, the wireless transmitter 100 and wireless A program module for recognizing various types of display devices connected to an interface 520 of the wireless receiver 500 and the wireless receiver 500 for transmitting and receiving data as external devices.

The wireless data converter 252 converts the video data received from the wireless transmitter 100 through the USB 1 port 241a of the USB communication unit 241 into wireless video data of the UWB band to convert the USB 2 port 241b. As a program module for transmitting to the wireless transmitter 100 via the wireless data converter 252, the wireless data converter 252 converts the video data into wireless video data of the UWB band according to the setting of the wireless transmission controller 254.

The wireless transmission control unit 254 is a program module for setting the video data changing environment of the wireless data conversion unit 252 and the operation of the wireless transmitter 100. The wireless transmission control unit 254 is input to the wireless transmitter 100. An input selection module 254a for selecting an input device of the moving image data, a resolution adjusting module 254b for adjusting the resolution of an image displayed on the screen of the display device and transmitted to the wireless receiver 500, and a wireless transmitter 100 Wireless communication setting module (254c) for setting a wireless communication environment of the wireless video data transmitted to the wireless receiver 500 through the; and the video data of the resolution adjusted by the resolution control module (254b) computer 200 A screen module for setting a movie display environment when the screen display module 254d and the wireless video data transmitted to the wireless receiver 500 are movie data. And a PPT mode setting module 254f for setting a PPT document display environment when the wireless data transmitted to the wireless receiver 500 is PPT (PowerPoint) data.

Hereinafter, a wireless communication process performed through the wireless communication device according to the present invention having the above configuration will be described.

5 is a flowchart illustrating a wireless communication process according to an embodiment of the present invention.

Prior to explaining the wireless communication process according to an embodiment of the present invention, the wireless transmitter 100 is connected to the computer 200 through the USB communication unit 121, DVD 300, the image device 400, etc. Is connected to the wireless transmitter 100 through the RCA communication unit 122, the LCD / LED / PDP / projector (600) (700) 800 and the speaker (outputting the video and audio of the video data) Display devices such as 610, 710, and 810 are connected to the interface unit 520 of the wireless receiver 500.

Steps S110 and S120: First, when the system is turned on and power is supplied to each device, the device recognition unit 253 of the computer 200 connected to the wireless transmitter 100 is the wireless transmitter 100 connected to the interface unit 240. The wireless transmitter 100 recognizes the video input device connected to the wired / wireless wire, the wireless receiver 500, and the display device connected to the wireless receiver 500 (S110). On the other hand, the user executes the wireless data conversion unit 252 and the wireless transmission control unit 254 to set the conversion and transmission environment of the video data to start the video data transmission (S120). In response to the operation of the wireless transmission control unit 254, a setting button for setting a video conversion and transmission environment is activated on the screen of the computer 200. The user selects an input selection, a resolution setting, and a communication environment through a setting button displayed on the screen. Setup, display setting, movie mode setting, PPT mode setting, etc. will be performed.

Steps S130, S140, S150, and S151: video data is input to the wireless transmitter 100 from a video input device such as a DVD 300 or a video device 400 according to an environment setting through the wireless transmission control unit 254 ( S130), the input video data is captured through the image capture unit 130 (S140), and then transmitted to the computer 200 through the USB 1 port 121a of the USB communication unit 121 to transmit the wireless transmission control unit 254. According to the resolution set through the computer 200 is displayed on the screen (S151).

Steps S160 and S170: On the other hand, the wireless data conversion unit 252 of the computer 200 transmits the moving picture data transmitted from the wireless transmitter 100 and displayed on the screen according to the setting environment of the wireless transmission control unit 254 in the UWB band ratio. Compressed wireless video data is converted (S160), the uncompressed wireless video data of the UWB band is transmitted to the wireless transmitter 100 through the USB 2 port 241b of the USB communication unit 241, the wireless transmitter 100 ) Receives the uncompressed wireless video data of the UWB band through the USB 2 port 121b of the USB communication unit 121 and transmits it to the outside through the wireless communication unit 140 (S170).

Steps S180, S190, and S200: The uncompressed wireless video data of the UWB band wirelessly transmitted from the wireless transmitter 100 is received through the wireless communication unit 540 of the wireless receiver 500 and demodulated to the original video data (S180). ), The video / audio distribution unit 530 distributes the image and the audio to the video output unit 521 and the audio output unit 522 of the interface unit 520 (S190), and the video output unit 521. Image data and audio data transmitted to the audio output unit 522 through a display device such as an LCD / LED / PDP / projector (600, 700, 800) and speakers (610, 710, 810). It is output (S200).

Step S210: The conversion, transmission and display of the video data of the above-described UWB band uncompressed wireless video data is repeatedly performed until the transmission of the video data is completed or terminated by the user.

Through the above process, the wireless transmitter 100 according to the present invention converts the video data input from the video input device into uncompressed wireless video data of the UWB band and transmits it wirelessly, and the wireless receiver 500 receives the UWB band. The uncompressed wireless video data of the demodulated data is displayed through the display device. As such, the display device connected through the wireless receiver 500 and the interface unit 520 according to the present invention is the same as the image displayed on the screen of the computer 200 connected through the wireless transmitter 100 and the interface unit 120. The image will be displayed.

The present invention is not limited to the above-described embodiments, and various modifications within the equivalent scope of the technical idea of the present invention and the claims to be described below by those skilled in the art to which the present invention pertains. Of course, modifications can be made.

1 is an overall network connection diagram of a wireless transmission and reception system according to the present invention;

2 is a block diagram of a wireless transmitter according to the present invention;

3 is a block diagram of a radio receiver according to the present invention;

4 is a block diagram of a computer connected to a wireless transmitter according to the present invention;

5 is a flowchart illustrating a wireless communication process according to the present invention.

※ Explanation of codes for main parts of drawing

100: wireless transmitter 110: central processing unit

120: interface unit 121: USB communication unit

121a: USB 1 port 121b: USB 2 port

122: RCA communication unit 130: video capture unit

140: wireless communication unit 200: computer

210: central processing unit 220: input device

230: output device 240: interface unit

241: USB communication unit 241a: USB 1 port

241b: USB 2 port 242: LAN communication unit

250: storage 251: operating system

252: wireless data conversion unit 253: device recognition unit

254: wireless transmission control unit 254a: input selection module

254b: resolution setting module 254c: wireless communication setting module

254d: display module 254e: movie mode setting module

254f: PPT mode setting module 300: DVD

400: Video device 500: Wireless receiver

510: central processing unit 520: interface unit

521: video output 521a: DVI port

521b: RGB port 522: audio output

523: LAN communication unit 524: USB communication unit

530: video / audio distribution unit 540: wireless communication unit

600: LCD / LED 610, 710, 810: Speaker

700: PDP 800: Projector

900: Wired Internet

Claims (8)

The high resolution video data transmitted from the video input device is transmitted to the computer 200 connected through the interface unit 120 and displayed on the screen of the computer 200, and the video data displayed on the screen of the computer 200 is uncompressed by UWB. The wireless transmitter 100 that transmits wirelessly to the outside using a band and the UWB band uncompressed wireless video data transmitted from the wireless transmitter 100 are received and transmitted to and displayed on a display device connected to the interface unit 520. In the wireless transmission system of a high resolution video including a wireless receiver 500, The wireless transmitter 100 includes a USB communication unit 121 for transmitting and receiving video data to and from the computer 200, and an interface unit 120 including an RCA communication unit 122 for receiving video data from a video input apparatus through RCA communication. )Wow; An image capture unit 130 for capturing an image of video data input through the interface unit 120 and transmitting the captured image data to the computer 200 through the USB communication unit 121; A wireless communication unit 140 for wirelessly transmitting uncompressed wireless video data of the UWB band transmitted from the computer 200 through the USB communication unit 121; And a central processing unit (110) for controlling the operations of the interface unit (120), the image capturing unit (130), and the wireless communication unit (140). delete The method of claim 1, The USB communication unit 121 includes a USB 1 port 121a for transmitting the video data captured through the image capturing unit 130 to the computer 200, and an uncompressed radio of the UWB band transmitted from the computer 200. Wireless transmission system for high-definition video, characterized in that the USB 2 port 121b for receiving video data. The method of claim 1, The wireless receiver 500 is A wireless communication unit 540 for receiving and demodulating uncompressed wireless video data of a UWB frequency band wirelessly transmitted from the wireless transmitter 100; A video / audio distribution unit 530 for dividing and distributing video and audio data included in the video data demodulated through the wireless communication unit 540; A video output unit 521 which transmits and outputs image data distributed and transmitted through the video / audio distribution unit 530 to a display device through a DVI port 521a or an RGB port 521b, and the video / audio An interface unit 520 including an audio output unit 522 for outputting voice data distributed and transmitted through the distribution unit 530 to the speakers 610, 710, and 810 of the display device; And a central processing unit (510) for controlling operations of the wireless communication unit (540), the image / audio distribution unit (530), and the interface unit (520). The method of claim 4, wherein The interface unit 520 is provided with a LAN communication unit 523 connected to an external wired Internet 900 to perform internet communication. The wireless communication unit 540 transmits Internet data received through the LAN communication unit 540 to the wireless transmitter 100, and transmits Internet data received from the wireless transmitter 100 through the LAN communication unit 523 to the Internet 900. ) To relay the Internet communication of the radio transmitter (100). The method of claim 1, The computer 200 The wireless transmitter 100, the video input device connected through the wireless transmitter 100 and the interface unit 120, a wireless receiver 500 for transmitting and receiving wireless data with the wireless transmitter 100, the wireless receiver 500 A device recognition unit 253 for recognizing a display device connected to the interface unit 520 of the external device; A wireless data converter 252 for converting high-resolution video data transmitted from the interface unit 120 of the wireless transmitter 100 into wireless video data of a UWB band and transmitting the same to the interface unit 120 of the wireless transmitter 100; ; And a wireless transmission control unit (254) for setting a wireless data change environment of moving image data converted into wireless data through the wireless data conversion unit (252). The method of claim 6, The wireless transmission control unit 254 An input selection module 254a for selecting an input device of moving image data input to the wireless transmitter 100 and a resolution adjusting module 254b for adjusting the resolution of a moving image transmitted to the wireless receiver 500 and displayed on a display device; ), A wireless communication setting module 254c for setting a wireless communication environment of wireless data transmitted to the wireless receiver 500 through the wireless transmitter 100, and a resolution controlled by the resolution adjusting module 254b. Wireless display system of a high resolution video, characterized in that the screen display module (254d) for displaying the video data on the screen of the computer (200) is provided. The method of claim 1, A video input device for transmitting video data to the wireless transmitter 100 includes any one of a computer 200, a DVD 300, and an image device 400. The display device for displaying the video data transmitted from the wireless receiver 500 includes any one of the LCD / LED (600), PDP (700), the projector 800, the wireless transmission system of the high resolution video .

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