CN202435514U

CN202435514U - HDMI input wireless conversion device

Info

Publication number: CN202435514U
Application number: CN 201120500010
Authority: CN
Inventors: 徐海轮
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-09-12
Anticipated expiration: 2021-12-05

Abstract

The utility model relates to wireless conversion device, specifically relating to an HDMI (high-definition multimedia interface) input wireless conversion device. The conversion device comprises an HDMI signal input unit, a decoding/compressing unit and a wireless transmitting unit, a wireless receiving unit, an uncompressing/encoding unit and a signal output unit, wherein the HDMI signal input unit, the decoding/compressing unit and the wireless transmitting unit are connected successively; the wireless receiving unit, the uncompressing/encoding unit and the signal output unit are connected successively; and the wireless transmitting unit is connected with the wireless receiving unit through the wireless network. For the HDMI input wireless conversion device, the HDMI signal is input through the HDMI signal input unit, and then is transmitted through the wireless network, and finally the signal output unit outputs an A/V signal or a VGA signal, thus realizing conversion of the HDMI signal by the wireless mode, removing the cumbersome wiring and frequent plugging and pulling the wires; besides, the HDMI input wireless conversion device can be widely applied to a meeting room, a lecture hall, an art stage, home video and music equipment and KTV (karaok television) entertainment place.

Description

A kind of HDMI imports wireless conversion equipment

Technical field

The utility model relates to a kind of wireless conversion equipment, relates in particular to a kind of HDMI and imports wireless conversion equipment.

Background technology

HDMI (High-Definition Multimedia Interface) is otherwise known as HDMI; It is a kind of new Digital audio frequency and video interface; Replace existing DVD player, television set, the signaling interface of various digital devices such as STB and display in following its meeting comprehensively.In the daily life, run into desktop computer through regular meeting and will connect panel computer, intelligent terminal will connect panel computer, and DVD will connect the terminal output equipment.The audio-video signal interface that products such as one most of desktop computers, panel computer, intelligent terminal have is inequality; Have the inconvenience that interconnects between the product HDMI interface and that have A/V interface or VGA interface; Two come the connection of these equipment generally all to adopt the cable connected mode, many times have the problem of the loaded down with trivial details and frequent plug of wiring wire rod.

The utility model content

The main purpose of the utility model is to provide a kind of HDMI to import wireless conversion equipment; Be intended to solve the equipment that has the HDMI interface now and have the A/V interface or the equipment of VGA interface between interconnect inconvenience, and the connection problems such as the loaded down with trivial details and frequent plug of wiring wire rod that need cable to bring.

The utility model is achieved in that a kind of HDMI imports wireless conversion equipment, comprising:

Receive the HDMI signal input unit of HDMI signal input;

Be connected with said HDMI input unit, to the HDMI signal decoding and be compressed into the decoding/compression unit of compressed data packets;

Be connected with said decoding/compression unit, send the wireless transmission unit of compressed data packets through wireless mode;

Receive the radio receiving unit of said wireless transmission unit through the compressed data packets of wireless mode transmission;

Be connected with said radio receiving unit, compressed data packets is decompressed is encoded into the decompression/coding unit of A/V signal or VGA signal then;

Be connected with said decompression/coding unit, send the signal output unit of A/V signal or VGA signal.

In the said structure, the communications such as can adopting WIFI, bluetooth or ZIGBEE of communicating by letter between said wireless transmission unit and the said radio receiving unit.

In the said structure, said decompression/coding unit also can be reduced into the HDMI signal with compressed data packets, and said signal output unit also can be exported the HDMI signal.

In the utility model; Through HDMI signal input unit input HDMI signal; Middle through the wireless network transmissions signal, through signal output unit output A/V signal or VGA signal, utilize wireless mode to realize the conversion of HDMI signal at last; Do not had loaded down with trivial details wiring also not need frequent plug wire rod, the utility model can also be widely used in meeting room, lecture hall, literature and art stage, home audio-visual amusement and KTV public place of entertainment.

Description of drawings

Fig. 1 is the structure chart that HDMI that the utility model embodiment provides imports wireless conversion equipment;

Fig. 2 is the HDMI transfer of data sketch map that the utility model embodiment provides.

Embodiment

For the purpose, principle and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The HDMI that Fig. 1 shows the utility model embodiment to be provided imports the structure of wireless conversion equipment, for the ease of explanation, only shows the part relevant with the utility model embodiment, and details are as follows.

A kind of HDMI imports wireless conversion equipment, comprising:

Receive the HDMI signal input unit 100 of HDMI signal input;

Be connected with said HDMI input unit 100, to the HDMI signal decoding and be compressed into the decoding/compression unit 200 of compressed data packets;

Be connected with said decoding/compression unit 200, send the wireless transmission unit 300 of compressed data packets through wireless mode;

Receive the radio receiving unit 400 of said wireless transmission unit 300 through the compressed data packets of wireless mode transmission;

Be connected with said radio receiving unit 400, compressed data packets is decompressed is encoded into the decompression/coding unit 500 of A/V signal or VGA signal then;

Be connected with said decompression/coding unit 500, send the signal output unit 600 of A/V signal or VGA signal.

Illustrate as follows, do not exceed but do not illustrate with this:

The basic transmission principle of HDMI: HDMI comes from the DVI interfacing, and they mainly are to be core with U.S.'s crystalline substance as the TMDS signal transmission technology of company, and this is the reason that can change each other through adapter of HDMI interface and DVI interface why just.The HDMI interface comprises A type, Type B, and interface definition is following:

Stitch	Signal description
		1	TMDS data 2+
2	TMDS data 2 shielding conductors
		3	TMDS data 2
4	TMDS data 1+
		5	TMDS data 1 shielding conductor
6	TMDS data 1-
		7	TMDS data 0+
8	TMDS data 0 shielding conductor
		9	TMDS data 0-
10	The TMDS clock signal+
		11	TMDS clock signal shielding conductor
12	The TMDS clock signal-
		13	CEC
14	Keep stitch (whether moving) like detecting devices
		15	SCL
16	SDA
		17	DDC/CEC ground connection
18	+5V
		19	The hot plug monitoring

A type HDMI interface

Type B HDMI interface

TMDS (Transition Minimized Differential Signaling) also is called as transition minimized differential signaling; Be meant through logical algorithms such as XOR and XNORs the primary signal data transaction is become 10; Preceding 8 are obtained after computing by primary signal for data; The mode of the 9th indication computing, the 10th is used for corresponding dc balance (DC-balanced just is meant in cataloged procedure to guarantee that direct current offset is zero in the channel; Level transforms the coupling that realizes between the Different Logic interface), the data after the conversion transmit with the difference kind of drive.This algorithm makes the Shang Chong that is transmitted the signal transition process with write-downs is little down, and the data of transmission are tending towards dc balance, and signal is reduced the electromagnetic interference of transmission line, improve signal transmitting speed and reliability.

Fig. 2 shows the HDMI transfer of data sketch map that the utility model embodiment provides.Generally speaking, HDMI connects and is made up of a pair of signal source and recipient, sometimes also can comprise a plurality of HDMI inputs or output equipment in a system.Each HDMI signal input interface can the establishing criteria receiving connector information, same signal output interface also can carry all signal messages.The HDMI data wire comprises three different TMDS data message passages and a clock passage with receiver; These passages are supported video, voice data and additional information; Video, voice data and additional information are passed through three channel transfers to receiver; The pixel clock of video then through TMDS clock channel transfer, accept after this frequency parameter, restores other three information that the data message passage passes over by receiver.

The source code form of HDMI input comprises video pixel data, control data and packet.Wherein include voice data and side information data in the packet, HDMI also comprises a BCH error correcting code in order to obtain the high reliability of voice data and control data in the packet simultaneously.The processing of the data message of HDMI can have different ways, but all is in each TMDS passage, to comprise 2 control data, 8 video data and 4 packet finally.The data transmission procedure of HDMI can be divided into three parts: video Data Transmission phase, island data transfer period and control data transmission phase.

As the utility model one embodiment, the communications such as can adopting WIFI, bluetooth or ZIGBEE of communicating by letter between said wireless transmission unit and the said radio receiving unit.

As the utility model one embodiment, said decompression/coding unit 500 also can be reduced into the HDMI signal with compressed data packets, and said signal output unit 600 also can be exported the HDMI signal.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.

Claims

1. a HDMI imports wireless conversion equipment, it is characterized in that, said conversion equipment comprises:

Receive the HDMI signal input unit of HDMI signal input;

2. import wireless conversion equipment like right one described HDMI, it is characterized in that, the communications such as to adopt WIFI, bluetooth or ZIGBEE of communicating by letter between said wireless transmission unit and the said radio receiving unit.

3. import wireless conversion equipment like right one described HDMI, it is characterized in that, said decompression/coding unit also can contract the compressed data packets decompress(ion) and be encoded into the HDMI signal, and said signal output unit also can be exported the HDMI signal.