CN204090061U - A Distributed Signal Switching and Remote Control System - Google Patents

Abstract

The utility model discloses the switching of a kind of distributed signal, remote control system.The purpose of this utility model is to provide the switching of a kind of distributed signal, remote control system.The utility model comprises the switch of band IGMP function, it is characterized in that: one end of the switch of described band IGMP function is connected with HD video player with notebook computer, high-definition camera with the 3rd encoder respectively by the first encoder, the second encoder, and the other end is connected with HDTV with multimedia plasma display, high definition projector with the 3rd decoder respectively by the first decoder, the second decoder.The utility model is mainly used in the place that meeting room, showroom etc. need high-definition signal.

Description

A Distributed Signal Switching and Remote Control System

technical field

The utility model relates to a signal switching and remote control system, in particular to a distributed signal switching and remote control system.

Background technique

The development of video has evolved from standard definition to high definition, from the initial VGA display resolution to XGA resolution, to the current 1920X1080P60 resolution. As the definition becomes higher and higher, the problems caused by transmission switching become more and more prominent. When the display signal is 1024X768, we can transmit 30 meters with a VGA cable. When the signal reaches the resolution of 1920X1080, it must be transmitted in HDMI format or DVI format. The transmission distance is greatly reduced, generally below 10 meters. And switching is very inconvenient.

On the other hand, network products are becoming more and more popular, and solutions to encode HDMI signals and DVI signals into network signals for transmission have begun to appear. However, these solutions can only solve point-to-point transmission, and switching is very inconvenient. Every time you switch, you need to modify the IP address by software. Very cumbersome, can't switch during presentation. Or use a traditional HDMI matrix to switch, but the problem is that the transmission distance of the HDMI cable is not enough. Moreover, it is centralized control and cannot be operated by the presenter, which is inconvenient to use.

The current HDMI switching technology, the first solution is to switch through HDMI matrix and transmit with HDMI cable. The second is encoded by an encoder, transmitted by a network cable, and switched by software. Disadvantages of the first solution: 1. Through matrix switching and HDMI cable transmission, the transmission distance is within 20 meters, which is too short. 2. The switching operation must be performed at the matrix position, which is centralized. If the signal is selected at the display end (such as demonstrating next to the projector), it needs to be switched in the control room, which is very inconvenient. Although the second solution solves the limitation of the transmission distance of the HDMI cable, it is very inconvenient to switch, and special software needs to be installed to switch on the computer. During the presentation, it is very troublesome to switch a signal. And the compatibility is very poor, it is difficult to connect with the general-purpose intelligent central control system. The problem to be solved by the utility model is: arbitrary switching of HDMI signals in a long distance. Next to the signal displayed, the signal can be selected arbitrarily via the remote control.

Contents of the invention

The purpose of the utility model is to provide a distributed signal switching and remote control system to solve the problem of long-distance arbitrary switching of HDMI signals.

In order to achieve the above object, the technical solution of the utility model is: a distributed signal switching and remote control system, including a switch with IGMP function, characterized in that: one end of the switch 7 with IGMP function passes through the first encoder 6. The second encoder 8 and the third encoder 9 are respectively connected to the notebook computer 1, the high-definition camera 2 and the high-definition video player 3, and the other end passes through the first decoder 10, the second decoder 11 and the third decoder 12 They are respectively connected with a multimedia plasma display 13, a high-definition projector 14 and a high-definition television set 17.

The encoder includes an address setting module 20 and an HDMI encoding module 22, the HDMI encoding module is respectively connected to the selection button 18 and the liquid crystal display tube 19 through the address setting module, and the other end is connected to the network connection module 21 and the HDMI input interface 23 respectively.

Described decoder comprises address setting module 20, infrared remote control module 27, HDMI encoding module 22 and infrared remote control 30, and one end of described HDMI encoding module 22 is connected with selection button 18 and liquid crystal display tube 19 respectively by address setting module 20, The other end is connected to the network connection module 21 and the HDMI input interface 23 respectively, and the address setting module 20 is also connected to the infrared emitting stick 29 through the infrared remote control module 27 .

The beneficial effects of the utility model are: 1. The HDMI signal can be arbitrarily switched through the switch in the long-distance range, and the signal can be arbitrarily selected through the remote controller next to the display signal, that is, for the current shortcomings of high-definition signal switching, the focus is on solving the long-distance arbitrary HDMI signal. switching problem. Using the new encoder and decoder, by the side of the presenter, through the remote control, you can arbitrarily select the signal sent from the remote end; 2. Change the address of the encoder through the remote control (or 232 control signal) to realize from any Signal transmission from encoder to any decoder; 3. Distributed HDIM remote switching mode combining encoder, decoder and switch.

 Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the decoder of the present invention.

Fig. 3 is a structural schematic diagram of the encoder of the present invention.

In the figure: 1-laptop, 2-HD camera, 3-HD video player, 4-HDMI cable, 5-network cable, 6-first encoder, 7-switch with IGMP function, 8-second encoder , 9-the third encoder, 10-the first decoder, 11-the second decoder, 12-the third decoder, 13-multimedia plasma display, 14-high definition projector, 15-infrared remote control, 16-projection screen, 17-high-definition TV, 18-select button, 19-LCD display tube, 20-address setting module, 21-network connection module, 22-HDMI encoding module, 23-HDMI input interface, 24-chassis shell, 25- Connection bus, 26-control bus, 27-infrared remote control module, 28-infrared remote control line, 29-infrared emission stick, 30-infrared remote control.

Detailed ways

Below in conjunction with the accompanying drawings, the utility model and its specific implementation will be further described in detail.

Referring to Fig. 1-3, the utility model comprises the switchboard with IGMP function, it is characterized in that: one end of the switchboard 7 with IGMP function is respectively connected with the first encoder 6, the second encoder 8 and the third encoder 9 Notebook computer 1, high-definition camera 2 are connected with high-definition video player 3, and the other end is respectively connected with multimedia plasma display 13, high-definition projector 14 and high-definition television through first decoder 10, second decoder 11 and third decoder 12 17 connected.

The encoder includes an address setting module 20 and an HDMI encoding module 22, the HDMI encoding module is respectively connected to the selection button 18 and the liquid crystal display tube 19 through the address setting module, and the other end is connected to the network connection module 21 and the HDMI input interface 23 respectively.

Described decoder comprises address setting module 20, infrared remote control module 27, HDMI encoding module 22 and infrared remote control 30, and one end of described HDMI encoding module 22 is connected with selection button 18 and liquid crystal display tube 19 respectively by address setting module 20, The other end is connected to the network connection module 21 and the HDMI input interface 23 respectively, and the address setting module 20 is also connected to the infrared emitting stick 29 through the infrared remote control module 27 .

program:

1. Install IP address conversion and display modules in each encoder; 2. Install IP address conversion and display modules in decoders; 3. Install infrared receiving modules in decoders; 4. Make infrared receiving sticks; 5. 6. Change the IP address of the decoder through the remote control; 7. Debug, one-to-one correspondence with the encoder address, establish a signal transmission channel, and realize signal transmission.

Principle description:

1. Make an encoder for each HDMI input signal and encode it into a network signal; 2. We set many addresses on each encoder (each address corresponds to a group of IP), for example, set 16 addresses, use digital The display tubes show the numbers for each address. The number of each encoder is set arbitrarily through the buttons; 3. On the display side, the signal to be displayed is decoded by the decoder to display the HDMI signal. We also set the decoder to multiple addresses (each address corresponds to a group of IPs), such as 16 addresses, which are displayed on the digital tube. The address of the decoder is selected through the infrared remote control (or through the 232 signal selection). Each remote control presses a number, and the address of the decoder changes to a corresponding number. Considering the ability of the decoder switch to be compatible with other control systems, we lead out the infrared receiver of the decoder through a cable. When controlled by the remote control, the remote control signal is received through the infrared stick. When using other control systems to control, directly use the socket to receive infrared electrical signals to solve the stability problem of wireless reception;

4. The encoder and decoder are connected through a switch. The switch has IGMP function; 5. Switching, when a set of numbers of the decoder corresponds to a set of numbers of the encoder. It is equivalent to the IP correspondence between the encoder and the decoder, and a transmission channel is established to realize the transmission; 6. Multiple encoders are set up as multiple addresses, and each address corresponds to the corresponding encoder one by one. In this way, through the remote control, on the display side, we can randomly select the address of the decoder to correspond to the corresponding encoder address, and realize the selection of arbitrary input HDMI high-definition video and audio signals; 7. HDMI encoding IC and HDMI decoding IC Components such as switches and switches are all existing products on the market. What we want to achieve is to switch between different encoding and decoding through the remote control (or 232 signal).

Encoder and decoder structure description:

Encoder structure with LED display window and button for manual address change

The decoder has LED display window and infrared stick interface

Infrared stick can receive infrared remote control signal

The infrared remote control button has 16 selection numbers, and various display numbers can be combined according to the scale of switching.

Except the chassis shell and the infrared remote controller are self-made, other parts and components are available on the market.

Claims (3)

1. A distributed signal switching and remote control system, comprising a switch with IGMP function, characterized in that: one end of the switch (7) with IGMP function passes through the first encoder (6), the second encoder (8 ) and the third encoder (9) are respectively connected with the notebook computer (1), the high-definition camera (2) and the high-definition video player (3), and the other end passes through the first decoder (10) and the second decoder (11) and the third decoder (12) are respectively connected with the multimedia plasma display (13), the high-definition projector (14) and the high-definition television (17). 2. The distributed signal switching and remote control system according to claim 1, characterized in that the encoder includes an address setting module (20) and an HDMI encoding module (22), and the HDMI encoding module communicates with the selection button respectively through the address setting module (18) is connected with the liquid crystal display tube (19), and the other end is respectively connected with the network connection module (21) and the HDMI input interface (23). 3. The distributed signal switching and remote control system according to claim 1, characterized in that the decoder includes an address setting module (20), an infrared remote control module (27), an HDMI encoding module (22) and an infrared remote control (30 ), one end of the HDMI encoding module (22) is respectively connected to the selection button (18) and the liquid crystal display tube (19) through the address setting module (20), and the other end is respectively connected to the network connection module (21) and the HDMI input interface ( 23) are connected, and the address setting module (20) is also connected with the infrared emitting stick (29) through the infrared remote control module (27).