CN218941184U

CN218941184U - 4K-HDMI high-definition video optical transmitter and receiver

Info

Publication number: CN218941184U
Application number: CN202320122802.4U
Authority: CN
Inventors: 姜小春
Original assignee: Jiangsu Newcom Optical & Electrical Communication Co ltd
Current assignee: Jiangsu Newcom Optical & Electrical Communication Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-04-28
Anticipated expiration: 2033-02-06

Abstract

The utility model provides an optical transceiver for 4K-HDMI signals, which comprises a transmitter and a receiver, wherein the transmitter and the receiver are used in pairs, the signal input end of the transmitter is connected with corresponding front-stage 4K-HDMI signal source equipment, the transmitter is connected with the starting end of an optical fiber through an HDMI signal transmitting optical module, the tail end of the optical fiber is connected with an HDMI signal receiving optical module of the receiver, and the signal output end of the receiver is connected with corresponding rear-stage 4K-HDMI display equipment. The optical transceiver of the utility model accords with the standard of HDMI 1.0-HDMI 1.4b, can automatically identify and be compatible with video signals of 720P, 1080P and 2160P, has a transmission distance of 60km, and meets the requirement of long-distance transmission of most 4K HDMI signals.

Description

4K-HDMI high-definition video optical transmitter and receiver

Technical Field

The utility model relates to optical transmission equipment, in particular to an optical transceiver for remotely transmitting 4K-HDMI high-definition video images through optical fibers, and specifically relates to a 4K-HDMI video optical transceiver.

Background

The 4KHDMI technology is an ultra-high definition video technology which is extended on the basis of 1080P HDMI digital television technology, and the conversion ensures that video signals become higher definition, so that good visual experience can be brought to audiences, and very clear pictures can be presented.

4K refers to the total number of columns of video pixels, 4K means that the video has 4000 columns of pixels, typically, 3840×2160 or 4096×2160 resolution pixels, respectively. 4K can also be understood simply as four times higher definition of 1080P. Meanwhile, the baseband of the 4K HDMI signal is also increased from 3Gbps to 10Gbps, the frame frequency is changed from 30p to 60p, and in terms of sound, the 4K HDMI is mainly developed towards the three-dimensional surround sound.

Because the 4K-HDMI digital HDMI signal code stream is too fast (10.8 Gbs), when the cable is used for transmission, the transmission distance is a very critical problem, the high-definition HDMI signal is affected by amplitude-frequency characteristics, group delay characteristics, high-low frequency interference, power ground wires and the like when being transmitted remotely, the signal loss is serious, and the phenomena of fuzzy tailing, tail separation and the like appear in images. At present, 4K-HDMI is generally about 5m, and long distance can only be transmitted by adopting optical fibers, so that remote 4K-HDMI signal transmission can not be realized.

Disclosure of Invention

The utility model aims to solve the problems that the code stream rate of the current 4K-HDMI signal is high, the cable transmission distance is short, and remote transmission cannot be realized, and provides an optical transmitter and receiver of the 4K-HDMI signal; the transmission distance can reach 60km, and the requirement of the long-distance transmission of most 4K HDMI signals is met.

The technical scheme of the utility model is as follows:

the utility model provides a 4K-HDMI high-definition video optical transmitter and receiver, which comprises a transmitter and a receiver, wherein the transmitter and the receiver are used in pairs, the signal input end of the transmitter is connected with corresponding front-stage 4K-HDMI signal source equipment, the transmitter is connected with the initial end of an optical fiber through an HDMI signal transmitting optical module, the tail end of the optical fiber is connected with an HDMI signal receiving optical module of the receiver, and the signal output end of the receiver is connected with corresponding rear-stage 4K-HDMI display equipment.

Further, the transmitter comprises an HDMI signal loop output connector, a transmitter HDMI signal input connector, a transmitter HDMI signal distribution module, an HDMI signal composite module and an HDMI signal transmitting optical module;

the input end of the transmitter HDMI signal distribution module is connected with the front-stage 4K-HDMI signal source equipment through the transmitter HDMI signal input connector, one signal output end of the transmitter HDMI signal distribution module is connected with the HDMI loop output connector, the other signal output end of the transmitter HDMI signal distribution module is connected with the HDMI signal composite module, the HDMI signal composite module outputs composite electric signals TXDout to the HDMI signal transmitting optical module, and the HDMI signal transmitting optical module converts the composite electric signals TXDout into optical signals and outputs the optical signals to the starting end of the optical fiber.

Further, the transmitter also comprises a DDC reading button and a DDC reading storage module;

the DDC signal pin of the transmitter HDMI signal input connector is connected with a DDC reading storage module, and a DDC reading button is arranged on the DDC reading storage module, so that the DDC information of the display can be read and stored under the control of the button.

Further, the transmitter further comprises a transmitter state LED display, and the transmitter state LED display is connected with a signal state end of the transmitter HDMI signal distribution module.

Further, the receiver comprises an HDMI signal receiving optical module, an HDMI signal demultiplexing module, a receiver HDMI signal distribution module and at least two receiver HDMI signal output connectors;

the input end of the HDMI signal receiving optical module is connected with the tail end of the remote optical fiber, the HDMI signal receiving optical module converts an optical signal into an electric signal RXDin and outputs the electric signal RXDin to the input end of the HDMI signal demultiplexing module, the output end of the HDMI signal demultiplexing module is connected with the input end of the HDMI signal distribution module of the receiver, the HDMI signal distribution module outputs HDMI signals to HDMI signal output connectors of all the receivers, and the HDMI signal distribution module is connected with corresponding rear-stage 4K-HDMI display equipment through the connectors.

Further, the receiver also comprises a receiver state LED display, and the receiver state LED display is connected with a signal state end of the receiver HDMI signal distribution module.

Further, the optical fiber adopts single fiber or multiple fibers.

The utility model has the beneficial effects that:

the optical terminal can support the 4K resolution HDMI interface standard of HDMI1.4b, is compatible with the standards of HDMI 1.1-HDMI 1.3a, and can automatically identify and be compatible with video signals of 720P, 1080P and 2160P; the distribution module of the optical transceiver has the functions of automatic equalization, clock retiming and signal driving, so that the picture is clear and stable; the transmitter is provided with a loop output interface, and can monitor display content locally; meanwhile, the EDID information function of the display equipment can be directly read and stored, and various display equipment can be compatible; the plug-and-play function is supported without software setting, and hot plug is supported; the single-fiber transmission can reach 60km, and the requirement of the long-distance transmission of most 4K HDMI signals is met.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.

Fig. 1 is a schematic diagram of the structure of a transmitter of the present utility model.

Fig. 2 is a schematic diagram of the structure of the receiver of the present utility model.

Detailed Description

Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein.

The 4K-HDMI high-definition video optical transmitter and receiver is characterized by comprising a transmitter and a receiver, wherein the transmitter and the receiver are used in pairs, a signal input end of the transmitter is connected with corresponding front-stage 4K-HDMI signal source equipment, the transmitter is connected with a start end of an optical fiber through an HDMI signal transmitting optical module, a tail end of the optical fiber is connected with an HDMI signal receiving optical module of the receiver, and a signal output end of the receiver is connected with corresponding rear-stage 4K-HDMI display equipment.

As shown in fig. 1, the structure of the 4K-HDMI non-compressed high-definition video optical transmitter includes a transmitter HDMI signal input connector (using standard Type a interface), a transmitter HDMI signal distribution module (using LT86102SXE of Lontium Semiconductor Corporation), an HDMI signal loop output connector (using standard Type a interface), an HDMI signal composite module (using SiFotonics Technologies co., ltd's SD1502/SD1503 transmitting conversion chip), an HDMI signal transmitting optical module (using general sfp+10g, single-mode or multimode, transmitting and transmitting distances of 0-60 km), a DDC read button (using market general action click button), and a DDC read memory module (model may be ATMEGA 8-16ac+eeprom), a transmitter status LED display (using commercially available light emitting diodes, e.g., L-314);

in the transmitter, a transmitter HDMI signal input connector is connected with a front-stage 4K-HDMI signal source device, RGB and CK video signals of HDMI signals are connected to a signal input end of a transmitter HDMI signal distribution module, and meanwhile DDC signals (used for EDID information) are connected to a DDC reading storage module.

The HDMI signal distribution module of the transmitter is provided with 2 identical signal output ends, so that the duplication of input signals is realized, and one signal output end RGB and CK are connected with an HDMI loop output connector and can be connected with a local display. The other group of signal output ends RGB and CK of the signal distribution module are connected with the input end of the HDMI signal composite module; the HDMI signal compounding module compounds input RGB and CK (R, G, B, CLK signal channels) into a high-speed serial output signal TXDout (the speed is 5-11.5 Gbps), the TXDout signal is connected with the HDMI signal transmitting optical module, and the HDMI signal transmitting optical module converts an electric signal into an optical signal and outputs the optical signal to the beginning end of an optical fiber.

The DDC signal within the transmitter HDMI signal input connector is connected to the DDC read memory module. When an external remote display (EDID information for reading the display) is connected to the transmitter HDMI signal input connector using an HDMI wire, and after a DDC read button is pressed (kept pressed for 10 seconds), the DDC read storage module performs EDID information reading, reads the EDID information of the external display from the HDMI signal input connector, and saves the EDID information in the EEROM, so that the EDID information of the display can be read when a display card is connected later. When the HDMI signal input connector of the transmitter is externally connected with a display card, the display card is started, the DDC reads the EDID information stored in the EEROM, and therefore the EDID information of the display card and the EDID information of the remote display can be kept consistent, and compatibility of display formats is guaranteed.

As shown in fig. 2, the receiver includes a receiver HDMI signal receiving optical module (using general sfp+10g, single mode or multimode, receiving and transmitting distance 0-60 km), an HDMI signal demultiplexing module (using SiFotonics Technologies co., SD1512/SD1513 receiving conversion chip of Ltd), a receiver HDMI signal distribution module (LT 86102SXE of Lontium Semiconductor Corporation), at least two HDMI signal output connectors (using standard Type a interface), and a receiver status LED display.

The HDMI signal receiving optical module of the receiver is connected with the tail end of a remote optical fiber, the receiver optical module converts an optical signal into an electric signal RXDin (the speed is 5-11.5 Gbps), the electric signal RXDin is connected with the signal input end (RXDin) of the HDMI signal demultiplexing module, the signal output end of the HDMI signal demultiplexing module outputs RGB and CK (R, G, B, CLK signal channels) and is connected with the input end of the HDMI signal distribution module of the receiver, the HDMI signal distribution module outputs HDMI signals RGB and CK and is connected with corresponding HDMI signal output connectors of the receiver, and the HDMI signal distribution module is connected with a rear-stage 4K-HDMI display device through each receiver signal output connector.

The signal inputs of the transmitter state display and the receiver state display are respectively connected with the signal detection output ends of the transmitter HDMI signal distribution module and the receiver HDMI signal distribution module to directly indicate the state of the HDMI signal.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.

Claims

1. The 4K-HDMI high-definition video optical transmitter and receiver is characterized by comprising a transmitter and a receiver, wherein the transmitter and the receiver are used in pairs, a signal input end of the transmitter is connected with corresponding front-stage 4K-HDMI signal source equipment, the transmitter is connected with a start end of an optical fiber through an HDMI signal transmitting optical module, a tail end of the optical fiber is connected with an HDMI signal receiving optical module of the receiver, and a signal output end of the receiver is connected with corresponding rear-stage 4K-HDMI display equipment.

2. The 4K-HDMI high-definition video optical transmitter of claim 1, wherein said transmitter comprises an HDMI signal loop output connector, a transmitter HDMI signal input connector, a transmitter HDMI signal distribution module, an HDMI signal composite module, and an HDMI signal transmission optical module;

3. The 4K-HDMI high-definition video optical transmitter of claim 2, wherein the transmitter further comprises a DDC read button and a DDC read memory module;

4. The 4K-HDMI high-definition video optical transmitter of claim 2, wherein the transmitter further comprises a transmitter status LED display, the transmitter status LED display being connected to the signal status terminal of the transmitter HDMI signal distribution module.

5. The 4K-HDMI high-definition video optical transceiver of claim 1, wherein the receiver comprises an HDMI signal receiving optical module, an HDMI signal demultiplexing module, a receiver HDMI signal distribution module, and at least two receiver HDMI signal output connectors;

6. The 4K-HDMI high-definition video optical transceiver of claim 5, wherein said receiver further comprises a receiver status LED display, said receiver status LED display being connected to a signal status terminal of the receiver HDMI signal distribution module.

7. The 4K-HDMI high-definition video optical transmitter and receiver of claim 1, wherein said optical fiber is single fiber or multi-fiber.