CN202103777U

CN202103777U - Mini-HDMI distributor

Info

Publication number: CN202103777U
Application number: CN2011201871406U
Authority: CN
Inventors: 姜志钧
Original assignee: Hangzhou Xun Ge Science And Technology Ltd
Current assignee: Hangzhou Xun Ge Science And Technology Ltd
Priority date: 2011-06-02
Filing date: 2011-06-02
Publication date: 2012-01-04
Anticipated expiration: 2021-06-02

Abstract

Provided is a mini-HDMI distributor, comprising a major control chip, a first image processing chip, a second image processing chip, a third image processing chip, a consumption electronic control (CEC) controller, a state indicating lamp, a reset switch, a power supply switch, a power supply adapter interface, and an input/output HDMI interface. The mini-HDMI distributor is capable of distributing the HD signals generated by an HD signal source to 8 monitors or projectors supporting HD signals synchronously in a multi-path consistence pattern.

Description

A kind of mini HDMI distributor

Technical field

The utility model relates to a kind of video distributor, is specifically related to a kind of mini HDMI distributor.。

Background technology

HDMI HDMI (High Definition Multimedia Interface) is a kind of unpressed digital consumption electronic product interface standard; It merges high definition video and multi channel audio signal to be connected to and synthesizes processing on the single digital interface; Send out through the single line cable; It is a digital technology standard to household appliances manufacturing; Be widely used on DVD player, cable TV/satellite television STB (set-top box), HDTV and other digital audio-video equipment, it can improve the quality of digital picture effectively, no longer need carry out analog-to-digital conversion.

The HDMI interface is state-of-the-art in the world at present DTV interface standard, is the perfect solution of household appliances digital data transmission, connection.HDMI is based on DVI (Digital Visual Interface) formulation, can be regarded as reinforcement and the extension of DVI, and both can be compatible.HDMI can be with the high score pigtail rate video and the multichannel audio data of Digital Transmission uncompressed under the high-quality situation of maintenance; High transmission speed is that 5Gbps o is indubitable; HDMI HDMI is the indispensable important component of audiovisual industry; It will be a big main flow trend of following audiovisual industry development; Therefore the HDMI connector also will become connector industry Focal Point of Common Attention undoubtedly, and in order to comply with this trend, industry is constantly released many new structures successively to satisfy the demand of high-speed transfer.

HDMI is the coffret of being developed to the next generation multimedia audio-visual devices, is applicable to DTV, DVD player, DVD videocorder, PVR, STB and other digital audio-video products of digital household appliances.Its greatest feature is audio signal and the high definition video signal that the HDMI interface can transmit in a transmission cable does not have compression.Distributor is the most frequently used parts in the CATV transmission system assignment network; Be used for distributing vision signal; It can be divided into the output of several roads equably with one road input signal; Usually have and two distribute, three distribute, four distribute, six distribute and eight distribution, along with the increase of the end product of band HDMI interface, some public arenas such as bar, sales field need similar before the audio frequency and video distributor product of AV.

The utility model content

According to the utility model, a kind of mini HDMI distributor is provided, the high-definition signal that can a high-definition signal source be produced, multichannel is consistent, synchronous is assigned on eight displays or projector of supporting high-definition signals.This mini HDMI distributor is used the standard cable of AWG26HDMI1.3 version for the HDMI signal of input, and the input transmission range can reach 15 meters, and the output transmission range can reach 25 meters.This mini HDMI distributor can be following application provides solution: the retail of HDTV, top box of digital machine, DVD, projector and displaying place; The test environment of HDTV, top box of digital machine, DVD, production plant of projector; The application in data center's control, information distribution, meeting room demonstration, teaching environment and training place.

For reaching above purpose, the technical scheme that the utility model is taked is:

A kind of mini HDMI distributor; Comprise main control chip, first picture processing chip, second picture processing chip, the 3rd picture processing chip, consumer electronics control CEC controller, status indicator lamp, reset switch, mains switch, power supply adaptor interface, I/O HDMI interface, it is characterized in that:

Main control chip adopts EPF011A, is connected with first picture processing chip through data wire;

First picture processing chip adopts EP9132, is connected with consumer electronics control CEC controller through input port;

Second picture processing chip and the 3rd picture processing chip all adopt EP9134, and main control chip is connected with second picture processing chip and the 3rd picture processing chip through data wire with first picture processing chip respectively;

Consumer electronics control CEC controller adopts EPF011C, and second picture processing chip is connected with 4 consumer electronics control CEC controllers through 4 road output ports respectively with the 3rd picture processing chip;

I/O HDMI interface adopts HDMI 1.3 versions; Wherein importing the HDMI interface is 1; Output HDMI interface is 8; In 8 output HDMI interfaces, 4 output interfaces connect 4 outputs of second picture processing chip respectively, and 4 output interfaces in addition connect 4 outputs of the 3rd picture processing chip respectively;

Status indicator lamp comprises that 1 power supply indicator is used to indicate the on off operating mode of power supply, and 8 output channel status indicator lamps are used to indicate that this passage is current whether transfer of data arranged, and these status indicator lamps all are connected with main control chip;

Said mini HDMI distributor is a rectangular structure; Comprise front panel and rear board; On said front panel, comprise 8 HDMI output interface indicator lights, power supply indicator, reset switch and mains switches; On said rear board, comprise 1 input HDMI interface, 8 output HDMI interfaces and power supply adaptor interface, 4 wherein said output HDMI interfaces are one group, in the middle of two groups, are said input HDMI interfaces.

Because the utility model has adopted above-mentioned technical measures, make its contrast prior art that following advantage arranged:

The high-definition signal that can a high-definition signal source be produced, multichannel is consistent, synchronous is assigned on eight displays or projector of supporting high-definition signals.

Description of drawings

Fig. 1 is the power unit circuit diagram of the utility model.

Fig. 2 is the input HDMI interface and the CEC controller partial circuit figure of the utility model.

Fig. 3 is the first picture processing chip partial circuit figure of the utility model.

Fig. 4 is the second or the 3rd picture processing chip partial circuit figure of the utility model.

Fig. 5 a-5d is 8 output HDMI interface section circuit diagrams of the utility model.

Fig. 6 is the main control chip partial circuit figure of the utility model.

Fig. 7 is the main control chip power supply and the interface section circuit diagram of the utility model.

Fig. 8 is the front panel and the rear board sketch map of the utility model.

Fig. 9 is the product appearance figure of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further explain.

Fig. 1 shows the power unit circuit of the utility model, is each chip power supply in the distributor.

The circuit connecting relation of each funtion part in the utility model has been shown in Fig. 2～7; From above-mentioned these circuit diagrams, can find out; Comprise main control chip, first picture processing chip, second picture processing chip, the 3rd picture processing chip, consumer electronics control CEC controller, status indicator lamp, reset switch, mains switch, power supply adaptor interface, I/O HDMI interface in the mini HDMI distributor; Wherein, Main control chip adopts EPF011A, is connected with first picture processing chip through data wire; First picture processing chip adopts EP9132, is connected with consumer electronics control CEC controller through input port; Second picture processing chip and the 3rd picture processing chip all adopt EP9134, and main control chip is connected with second picture processing chip and the 3rd picture processing chip through data wire with first picture processing chip respectively; Consumer electronics control CEC controller adopts EPF011C, and second picture processing chip is connected with 4 consumer electronics control CEC controllers through 4 road output ports respectively with the 3rd picture processing chip; I/O HDMI interface adopts HDMI 1.3 versions; Wherein importing the HDMI interface is 1; Output HDMI interface is 8; In 8 output HDMI interfaces, 4 output interfaces connect 4 outputs of second picture processing chip respectively, and 4 output interfaces in addition connect 4 outputs of the 3rd picture processing chip respectively; Status indicator lamp comprises that 1 power supply indicator is used to indicate the on off operating mode of power supply, and 8 output channel status indicator lamps are used to indicate that this passage is current whether transfer of data arranged, and these status indicator lamps all are connected with main control chip.

The employed EP9134 of the utility model possesses the distribution capability of 4 port HDMI signals, possesses complete HDCP (Dynamic Host Configuration Protocol) deciphering/data encryption ability, meets HDMIRev1.3b and HDCP Rev1.2 specification.The utility model through EP9132 with the input of the data of the HDMI interface of receiving, through the HDCP deciphering with encrypt, with transfer of data to four road HDMI interface output signal.

The utility model has used 9 CEC (consumer electronics control) controllers that are used for consumer electronics control altogether, and the core of CEC controller is a single-chip microcomputer, and the consumer electronics controlled function is to realize through software.Under the situation of HDTV and video playback apparatus support, can realize video and audio product identification and Collaborative Control mutually, realize the function of all products in the single remote remote control whole system.

In sum, the utlity model has following advantage:

1) input of one road HDMI1.3b version signal is distributed into the output of octuple HDMI1.3b version signal, and supports 30/36 dark color;

2) compatible HDCP1.2 protects high frequency range digital content, when transmitting through coffret, can not suffer illegal copies in order to guarantee digitized image and voice data;

3) support that CEC is used for controlling the multiple audio-visual equipment that the user uses possibly;

4) support 3D to show, reach aspect stereoeffects such as vision, the sense of hearing through the computing that utilizes computer;

5) support blue-ray DVD 24/50/60fs/HD-DVD/xvYCC

6) support audio format DTS-HD/Dolby-trueHD/LPCM7.1/DTS/DOLBY-AC3/DSD

8) the supporting signal sequential is reformed

Along with the raising of clock frequency, effective read-write window of leaving transfer of data for is more and more littler, wants in very short time restriction, lets data-signal from intactly being sent to receiving terminal from drive end, carries out accurate sequential and calculates and analyze;

9) the standard cable of use AWG26 HDMI 1.3 versions, the input transmission range can reach 15 meters, and the output transmission range can reach 25 meters;

10) no signal loss

11) install simply

12) need the power supply of DC5V/3A specification.

Claims

1. one kind mini HDMI distributor; Comprise main control chip, first picture processing chip, second picture processing chip, the 3rd picture processing chip, consumer electronics control CEC controller, status indicator lamp, reset switch, mains switch, power supply adaptor interface, I/O HDMI interface, it is characterized in that:

Status indicator lamp comprises that 1 power supply indicator is used to indicate the on off operating mode of power supply, and 8 output channel status indicator lamps are used to indicate that this passage is current whether transfer of data arranged, and these status indicator lamps all are connected with main control chip.

2. mini HDMI distributor as claimed in claim 1; It is characterized in that: said mini HDMI distributor is a rectangular structure; Comprise front panel and rear board, on said front panel, comprise 8 HDMI output interface indicator lights, power supply indicator, reset switch and mains switches, on said rear board, comprise 1 input HDMI interface, 8 output HDMI interfaces and power supply adaptor interface; 4 wherein said output HDMI interfaces are one group, in the middle of two groups, are said input HDMI interfaces.