KR20140106885A - An apparatus for converting a transmission type of hdmi signal - Google Patents

An apparatus for converting a transmission type of hdmi signal Download PDF

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Publication number
KR20140106885A
KR20140106885A KR1020130021117A KR20130021117A KR20140106885A KR 20140106885 A KR20140106885 A KR 20140106885A KR 1020130021117 A KR1020130021117 A KR 1020130021117A KR 20130021117 A KR20130021117 A KR 20130021117A KR 20140106885 A KR20140106885 A KR 20140106885A
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KR
South Korea
Prior art keywords
signal
video
unit
data
audio input
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Application number
KR1020130021117A
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Korean (ko)
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문재훈
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문재훈
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]

Abstract

The present invention discloses a transmission method conversion transmission apparatus of an H.323 signal.
A transmission method conversion transmission apparatus of the H.264 / AVC system according to the present invention is a system for transmitting and receiving video / audio input signals between an output device for outputting a H.264 standard signal and a video display device for receiving a video / A transmission method conversion transmission apparatus of an H.264 / AVC transmission system for transmitting a voice input signal, the apparatus comprising: a video / audio input signal input unit connected to an output device, the video / audio input signal being mixed with a network signal to generate mixed data And outputting it as a network signal; And reception means for separating and generating the video / audio input signals included in the mixed data and receiving the mixed data and outputting the mixed video / audio input signals to a video display device connected to the transmission line by a network cable, do.
The HTIM signal transmission method conversion apparatus according to the present invention having the above-

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for converting a transmission signal,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an HDMI digital signal transmission method and transmission apparatus for transmitting and receiving an HDMI (High Definition Multimedia Interface) digital signal, and more particularly, The present invention relates to an H.264 / AVC signal transmission apparatus and a H.264 / AVC signal transmission apparatus.

As the quality of multimedia contents has been gradually improved, a variety of digital interfaces capable of digital data communication with peripheral devices have been developed due to the spread of various digital video devices (digital TV, LCD monitor, PDP, etc.) for reproducing them.

Such digital interfaces are widely used in the consumer electronics market such as IEEE 1394, USB, and DVI (digital video interface) technology capable of digitally transmitting high-bandwidth uncompressed video signals. The DVI is a digital video interface Is a standard made by DDWG (Digital Display Working Group 10-0772416 Group) for accommodating in a connector and is widely applied to products such as PC, TV, and DVD.

In addition, the above digital interface has a disadvantage in that it can not simultaneously transmit a video signal and an audio signal. In addition, the size of a connector is large. Recently, a high definition multimedia interface (HDMI ).

The High-Definition Multimedia Interface (HDMI) transmits digital television audiovisual signals from DVD players, set-top boxes and other audiovisual sources to television sets, projectors and other video display devices. , Which can transmit high-quality multi-channel audio data and can be applied to all standard and high-definition (HD) electronic video formats. Content protection technology is also possible. In addition, HDMI can transmit uncompressed baseband digital HD video signals and audio signals with no loss, and can easily connect devices with a single-stranded cable, provide integrated control of devices, and can transmit high- .

In this HDMI, the HDMI terminal (port) of the image providing device and the HDMI terminal (port) of the image display device are connected by a single HDMI cable so that the image signal, the sound signal and the control signal can be easily transmitted, And the sound are reproduced simultaneously. That is, in the Video Electronics Standard Association (VESA), the EDID (Extended Display Identification Data) containing information on the video display device and the DDC (Display Data Channel) protocol for data communication between the video providing device and the video display device have been established . According to the DDC protocol, when an image display device is connected to an image providing device through an HDMI cable and power is applied to the image display device, the image display device provides an EDID signal to the image providing device, Type, EDID version, phosphor or filter type, timing, screen size, luminance, pixel information, and the like. The video providing device recognizes the video display device from the EDID signal of the video display device, and generates an HDMI source (video signal and audio signal) reproducible by the video display device and provides the generated HDMI source to the video display device. Then, the video display device reproduces the HDMI source from the video providing device

Such HDMI can be used in digital TV, set-top box (STB), DVD player, PC, notebook, PDA, etc. because of its high definition video and audio signal support, Smart phones, and so on.

However, although the HDMI transmits and receives signals using a dedicated cable, when the transmission distance exceeds 10 meters, the signal quality becomes poor due to noise or the like. For example, if a full HD video signal is transmitted using an HDMI cable, the guaranteed distance is only within 5m.

Conventionally, an amplifier and an expensive optical cable are additionally provided as a method of solving the restriction on the transmission distance of the HDMI. However, this method is not only economical, but also difficult to maintain, and the transmission distance is only several tens of meters.

Patent No. 10-11666333, page 2, claim 1, figure 1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an optical transmission system, And an object of the present invention is to provide a transmission method conversion transmission apparatus of an H-REID signal.

In order to achieve the above object, an H.264 / AVC transmission system conversion transmission apparatus according to a preferred embodiment of the present invention includes a transmission apparatus for outputting a video / audio input signal as an H.264 standard signal, A video / audio input signal which is connected to an output device and receives a video / audio input signal, wherein the video / audio input signal is input to the video / audio input device, Transmitting means for mixing the input signal with the network signal to generate mixed data and outputting the mixed data as a network signal; And reception means for separating and generating the video / audio input signals included in the mixed data and receiving the mixed data and outputting the mixed video / audio input signals to a video display device connected to the transmission line by a network cable, .

According to a preferred aspect of the present invention, the transmitting means includes a digital signal input terminal, which is an input element for receiving a video / audio input signal from the transmitting device, and a digital signal input terminal for removing noise included in the digital signal input from the digital signal input terminal A video / audio signal compression unit for compressing a signal passed through the video / audio input signal filter unit; a video / audio signal compression unit for temporarily storing a signal compressed by the video / A network temporary identification unit (1: N) for identifying a network of the receiving means, a data reception temporary identification unit (1: N) for identifying a reception waiting status And a reception unit for receiving a mixing command for data when the reception waiting is confirmed, connected to the reception waiting unit, to the data temporary storage unit A data mixing unit connected to the data mixing command unit and receiving a control signal and receiving a temporarily stored signal from the data temporary storing unit and mixing the received network receiving information; (UTP cable) for transmitting mixed data in which the digital source signal and the network reception information are finally mixed, provided at an output terminal of the mixed data transmitting unit, And a network signal output terminal connected to the network.

In another preferred aspect of the present invention, the receiving means includes a network signal input terminal, which is a connection element for connecting the transmitting means with a network cable (UTP cable), and a network signal input terminal connected in circuit with the network signal input terminal, A mixed data separating unit for separating the mixed data received from the mixed data receiving unit into a video / audio input signal and a network signal; Audio input signal decompression section for separating the compressed video / audio input signal among the data signals separated by the mixed data separation section, and a video / audio input / A video / audio input signal filter correction for performing a signal correction on a signal passed through the compression / And, there being configured, including the video / audio input signal correction filter unit of the output terminal element for transmitting a signal via the video display device a digital signal output terminal.

In another preferred aspect of the present invention, the transmitting means and the receiving means are provided with a terminal element connected by a network cable of IEEE802 standard, and the receiving means includes a terminal element connected to the video display device with the HDMI standard .

In another preferred aspect of the present invention, a network hub for distributing mixed data is connected to an output terminal of the transmitting means.

The HTIM signal transmission method conversion transmission apparatus of the present invention can transmit a signal to an image display device receiving image contents located at a remote location by eliminating the restriction on the transmission distance of the HDMI signal, The signal can be distributed to image display devices located at various places at the same time.

In other words, it is possible not only to transmit the HDMI signal to the LAN signal to enable the remote transmission, but also to distribute the signal by constituting the hub, and as a result, it is possible to improve the degree of freedom and expandability of the operation of the transmission apparatus and the video display apparatus The effect is expected.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

1 is a block diagram for explaining a transmission unit of a transmission method conversion transmission apparatus of an H.264 / AVC signal according to the present invention;
FIG. 2 is a block diagram for explaining a receiver of a transmission method conversion transmission apparatus of the H.323 system according to the present invention;
FIG. 3 is a block diagram for explaining an operation configuration of a transmission mode conversion transmission apparatus of the H.323 system according to the present invention;
FIG. 4 is a block diagram for explaining a modification of the transmission method conversion transmission apparatus of the H.3DM signal according to the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an HTIM signal transmission method transmission apparatus according to the present invention will be described with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings are denoted by the same reference numerals as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram for explaining transmission means of a transmission method conversion transmission apparatus of the H.323 according to the present invention. In the figure, the transmission apparatus 3 and a digital signal input terminal (10) including a network signal output terminal (11), a network signal output terminal (19) that mixes a digital source signal inputted through the digital signal input terminal (11) with an IEEE802 signal and sends out the signal in accordance with the IEEE802 signal standard .

FIG. 2 is a block diagram for explaining receiving means of a transmission method conversion transmission apparatus according to the present invention, in which the network signal output terminal 19, which is an IEEE802 output element of the transmission means 10, A network signal input terminal 21 which is an IEEE802 input element connected to a cable UTP cable and receives a signal, and a multiplexer 21 for separating mixed signal data, which is a signal inputted through the network signal input terminal 21, from a network signal, There is shown a transmitting means 10 including a digital signal output terminal 28 provided to the video display device 5 in a standard.

FIG. 3 is a block diagram for explaining the operation of the HDMI signal transmission system conversion transmission apparatus according to the present invention. In the figure, an HDMI signal is input from an output device 3 composed of a PC, a DVD, a set- A transmission unit 10 connected to the transmission unit 10 via a UTP cable to receive an IEEE802 signal, convert the received IEEE802 signal into an HDMI signal, and transmit the HDMI signal to an image display device 5 shows a transmission method conversion transmission apparatus 1 of the H.323 system.

The configuration of a transmission method conversion transmission apparatus of the H.323 system according to the present invention will now be described with reference to the above drawings.

A transmission method conversion transmission apparatus 1 according to the present invention includes a transmission means 10 connected to an output device 3 to receive a digital source signal and a transmission means 10 connected to the transmission means 10 via a network UTP And a receiving means 20 for receiving the signal and transmitting the signal to the video display device 5. [

The dispensing device 3 is an apparatus for outputting an analog signal or a digital signal made up of video and sound and is a device that can be used for a personal computer (PC), a mobile communication terminal, a personal digital assistant (PDA), a mobile computer, ), Smart phones and various video and audio output devices can be used. That is, various devices known in the art may be used as long as the sending device 3 is capable of sending digital signals.

The image display device 5 receives analog signals or digital signals composed of video and sound and outputs them through a screen and a speaker. The display device 5 includes a display device such as a LCD monitor, an LED monitor, a PDP, a CRT monitor, Is used.

The dispensing device 3 and the video display device 5 may be implemented by a known technique, and thus a detailed description thereof will be omitted.

The transmission means 10 is a component for receiving a digital signal and converting it into a network signal for transmission. In the present invention, a digital signal input terminal 11, which is an input element for receiving a digital signal from the transmission device 3, A video / audio input signal filter unit 12 for removing noise contained in a digital signal input from the digital signal input terminal 11, A data temporal storage unit 14 for temporarily storing a signal compressed by the video / audio signal compressing unit 13, a network of receiving means to be described later, A reception waiting unit 15a connected in circuit with the network receiving unit 15 for confirming a waiting state of reception; Connected to the waiting confirmation unit 15a A data mixing instruction unit 16 for applying a mixing instruction for data to the data temporary storage unit 14 when a new waiting condition is confirmed and a data mixing instruction unit 16 connected to the data mixing instruction unit 16, A data mixing unit 17 for receiving the temporarily stored signal from the temporary storage unit 14 and mixing the network reception information of the reception side and a control unit for controlling the transmission of mixed data via the data mixing unit 17 (UTP cable) for transmitting mixed data in which a digital source signal and network reception information are finally mixed, is connected to the output terminal of the mixed data transmitting unit 18, And a signal output terminal 19.

The transmission means 10 configured as described above is connected to the transmission device 3 through the HDMI cable and receives the digital source signal and mixes it with the network signal information of the reception means 20 to be described later to generate a transmission data signal, (Not shown) connected to the network signal output terminal 19 to the receiving means 20 side.

The receiving means 20 receives mixed data in which the digital source signal and the network signal are mixed with the transmitting means 10 through a network cable (UTP cable), and extracts a network signal from the mixed data, And applies the extracted signal to the video display device 5 connected by the HDMI cable.

2, the receiving means 20 includes a network signal input terminal 21 which is a connection element for connecting the transmission means 10 with a network cable (UTP cable), and a network signal input terminal 21 A mixed data receiving unit 22 for receiving the mixed data sent from the transmitting unit 10 in a circuit connection with the mixed data receiving unit 22, A data temporary storage unit 24 connected to the mixed data separating unit 23 to temporarily store the separated data signals, A video / audio input signal compression / demultiplex unit 26 for demultiplexing a video / audio input signal, a video / audio input signal compression / demultiplex unit 26 for demultiplexing a video / audio input signal, The government 27, / Consists of a signal via an audio input signal correction filter 27 to the digital signal output terminal 28 an output terminal element for transmitting to the image display device 5.

The transmitting means 10 configured as described above receives the mixed data composed of the video / audio input signal and the network signal transmitted from the receiving means 20, separates and extracts the video / audio input signal, To the digital signal output terminal 28 and the video display device 5 connected with the HDMI cable.

On the other hand, the digital signal output terminal 28 of the present invention has been described as a terminal having the HDMI cable connection standard, but it is also possible that a known wire / wireless communication standard is applied.

The configuration of the HTIM signal transmission system conversion and transmission apparatus according to the present invention configured as above can be largely implemented as shown in FIG. 3 and FIG.

First, FIG. 3 shows the most general implementation configuration. As shown in the figure, the transmission method conversion transmission apparatus of the H.264 / AVC interface according to the present invention is connected to a single transmission apparatus 3 for generating and outputting video / audio input signals, And a transmitting means 10 connected to the receiving means 20 through a network cable for receiving a signal and providing the signal to the video display device 5. [ At this time, the transmitting means 10 is configured on the sending device 3 side, the receiving means 20 is configured on the video display device 5 side, and the transmitting means 10 and the receiving means 20 are connected (UTP cable) can transmit a high-quality video / audio input signal to the image display device 5 remote from the transmitting device 3, by ensuring a transmission distance of several tens of meters to several hundreds of meters. Do.

FIG. 4 shows another embodiment of the HTIM signal transmission system conversion transmission apparatus according to the present invention, which is basically the same as the configuration of FIG. However, by distributing the signal transmitted from the transmitting means 10 via a known hub, the signal transmitted from the single transmitting means 10 is transmitted to the plurality of receiving means 20, It is possible to transmit the video / audio input signal to the video display device 5 of the video display device.

It is to be understood that the present invention is not limited to the disclosed embodiment and that various changes and modifications may be made without departing from the spirit and scope of the present invention as set forth in the appended claims. It is obvious to those who have knowledge. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

3: sending device
5: Video display device
10: transmitting means
20: receiving means

Claims (5)

A transmission system of an H.264 / AVC transmission system for transmitting a video / audio input signal between a transmission apparatus for outputting a video / audio input signal as a H.264 standard signal and a video display apparatus for receiving and reproducing a video / audio input signal, In this case,
A transmitting unit 10 connected to the sending device 3 to receive mixed video / audio input signals and generating mixed data by mixing video / audio input signals with network signals, and outputting mixed data as network signals;
A video / audio input signal included in the mixed data is separately generated by receiving the mixed data from the transmission means 10 through a network cable, and outputting the generated video / audio input signal to the video display device 5 connected to the HDC standard Receiving means (20);
And a transmission mode conversion unit for converting the transmission mode of the H.264 / AVC signal.
2. The apparatus according to claim 1, wherein the transmitting means (10)
A digital signal input terminal 11 as an input element for receiving a video / audio input signal from the sending device 3,
A video / audio input signal filtering unit 12 for removing noise included in a digital signal inputted from the digital signal input terminal 11,
A video / audio signal compression unit (13) for compressing a signal passed through the video / audio input signal filter unit (12)
A data temporary storage unit 14 for temporarily storing a signal compressed by the video / audio signal compressing unit 13,
A network (IEEE 02) reception identification unit [1: N] 15 for identifying the network of the reception means,
A reception waiting confirmation unit 15a connected in circuit with the network reception identification unit 15 for confirming a reception waiting state,
A data mixing instruction unit 16 connected to the reception wait confirmation unit 15a to apply a mixing instruction for data to the data temporary storage unit 14 when a waiting for reception is confirmed,
A data mixing unit 17 connected to the data mixing command unit 16 and receiving a control signal and receiving a temporarily stored signal from the data temporary storing unit 14 to mix the receiving side network receiving information,
A mixed data transmission unit 18 for receiving mixed data via the data mixing unit 17 and controlling transmission,
A network signal output terminal 19 connected to a network cable (UTP cable) provided at an output terminal of the mixed data transmission unit 18 for finally transmitting mixed data in which a digital source signal and network reception information are mixed;
And a transmission unit for converting the transmission mode of the H.264 / AVC signal.
2. The apparatus according to claim 1, wherein the receiving means (20)
A network signal input terminal 21 which is a connection element for connecting the transmission means 10 with a network cable (UTP cable)
A mixed data receiving unit 22 connected in circuit with the network signal input terminal 21 to receive mixed data transmitted from the transmitting means 10,
A mixed data separator 23 for separating the mixed data received from the mixed data receiver 22 into a video / audio input signal and a network signal,
A data temporary storage unit 24 connected to the mixed data separator 23 to temporarily store the separated data signal,
A video / audio input signal compression / decompression unit 26 for separating compressed video / audio input signals among the data signals separated by the mixed data separation unit 23,
A video / audio input signal filter correction unit 27 for performing signal correction on a signal passed through the video / audio input signal compression / separation unit 26,
A digital signal output terminal 28 as an output terminal element for transmitting a signal passed through the video / audio input signal filter correction unit 27 to the video display device 5;
And a transmission unit for converting the transmission mode of the H.264 / AVC signal.
2. The apparatus according to claim 1, wherein the transmitting means (10) and the receiving means (20) comprise terminal elements connected by a network cable of IEEE802 standard, and the receiving means (20) And a terminal element connected to the transmission line.
The method according to claim 1,
And a network hub is connected to the output terminal of the transmission means (10) to distribute the mixed data.
KR1020130021117A 2013-02-27 2013-02-27 An apparatus for converting a transmission type of hdmi signal KR20140106885A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109803170A (en) * 2018-12-29 2019-05-24 深圳市通立威科技有限公司 Attachment device
KR20190102571A (en) * 2018-02-26 2019-09-04 주식회사 단비테크 Signal transmission system for interactive boards and projectors
CN110958424A (en) * 2018-09-27 2020-04-03 奈斯特株式会社 Mixed signal output method and device of image and sound

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190102571A (en) * 2018-02-26 2019-09-04 주식회사 단비테크 Signal transmission system for interactive boards and projectors
CN110958424A (en) * 2018-09-27 2020-04-03 奈斯特株式会社 Mixed signal output method and device of image and sound
KR102079058B1 (en) * 2018-09-27 2020-04-07 주식회사 앤씨앤 Method and apparatus outputting mixing signal of video and audio
CN109803170A (en) * 2018-12-29 2019-05-24 深圳市通立威科技有限公司 Attachment device

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