CN215344813U - HDMI light path distributor and distribution system - Google Patents

Abstract

The utility model provides an HDMI (high-definition multimedia interface) light path distributor which comprises a plurality of transmitting modules, a first photoelectric conversion module, a second photoelectric conversion module, a receiving module and a control module, wherein the transmitting modules are connected with the first photoelectric conversion module; the transmitting module and the receiving module are electrically connected with the control module; the control module is used for gating and connecting any one of the transmitting modules. The high-speed signal is converted into an optical signal through the transmitting module, the optical signal is converted into an electric signal through the receiving module, and the control module is used for selectively communicating any one of the transmitting modules to transmit the signal, so that the distribution and use of the HDMI2.1 are realized. The receiving module is electrically connected with the control module and can be used for transmitting low-speed signal signals. The transmitting module and the receiving module are transmitted through optical signals, and high-speed transmission of the distributor is achieved.

Description

HDMI light path distributor and distribution system

Technical Field

The utility model relates to an HDMI distributor, in particular to an HDMI optical path distributor.

Background

The traditional HDMI distributor is characterized in that a plurality of HDMI SOURCE ends and an HDMI SINK end are used in a circuit, and any SOURCE end is selectively switched to input a video SOURCE by using a circuit method.

Such a distributor would normally be used in HDMI version 1.4 (single channel 3.4Gbps) and HDMI version 2.0 (single channel 6Gbps), but as the single channel rate of HDMI rises to 12Gbps (HDMI2.1), the way in which the circuit approach distributes 12Gbps single channels becomes difficult to achieve (because the rate is too high).

Therefore, an HDMI optical path distributor is urgently needed to solve the problem that the distributor of HDMI2.1 is difficult to realize high-speed transmission.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the utility model provides a HDMI light path distributor solves current HDMI2.1 distributor and hardly realizes the problem of high-speed transmission.

In order to solve the technical problems, the utility model adopts the technical scheme that: the HDMI optical path distributor comprises a plurality of transmitting modules, a first photoelectric conversion module, a second photoelectric conversion module, a receiving module and a control module;

the first photoelectric conversion module is used for converting an electric signal into an optical signal; the second photoelectric conversion module is used for converting the optical signal into an electrical signal;

the transmitting module and the receiving module are electrically connected with the control module; the control module is used for gating and connecting any one of the transmitting modules.

Furthermore, the optical fiber module further comprises an optical fiber splitter and an optical splitting chip, wherein the optical fiber splitter and the optical splitting chip are used for combining the 4 optical paths of the HDMI2.1TX modules into one path.

Further, the transmitting module is a female HDMI2.1TX module; the receiving module is a female HDMI2.1RX module.

Furthermore, the number of the female seat HDMI2.1TX modules is 4.

Furthermore, the control module comprises a circuit board and a socket, and the HDMI2.1TX module and the HDMI2.1RX module are respectively connected to the circuit board through the socket.

A second aspect of the present invention provides a distribution system, including the HDMI optical path distributor described above, further including a source end and a display end, where the source end is connected to the transmitting module, and the display end is connected to the receiving module.

Furthermore, the source end and the display end are both provided with an HDMI interface.

The utility model has the beneficial effects that: the high-speed signal is converted into an optical signal through the transmitting module, the optical signal is converted into an electric signal through the receiving module, and the control module is used for selectively communicating any one of the transmitting modules to transmit the signal, so that the distribution and use of the HDMI2.1 are realized. The receiving module is electrically connected with the control module and can be used for transmitting low-speed signal signals. The transmitting module and the receiving module are transmitted through optical signals, and high-speed transmission of the distributor is achieved.

Drawings

The detailed structure of the utility model is described in detail below with reference to the accompanying drawings

Fig. 1 is a flowchart of an HDMI optical splitter according to the present invention.

Fig. 2 is a schematic diagram of the HDMI active optical cable according to the present invention.

Fig. 3 is a schematic diagram of a 4-to-1 distributor of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

Referring to fig. 1, the present invention provides an HDMI optical path distributor, which includes a plurality of transmitting modules 10, a first photoelectric conversion module, a second photoelectric conversion module, a receiving module 20, and a control module 30;

the first photoelectric conversion module is used for converting an electric signal into an optical signal; the second photoelectric conversion module is used for converting the optical signal into an electrical signal;

the transmitting module 10 and the receiving module 20 are both electrically connected with the control module 30; the control module 30 is used for gating any one of the transmitting modules 10.

Specifically, the transmitting module 10 and the receiving module 20 of the present invention relate to photoelectric conversion, and the photoelectric conversion is due to different structures of the transmitting device and the receiving device, one is a laser and the other is a photodetector, so that the incoming connection of the laser or the circuit electrical path connecting the photodetector must be clearly defined as the transmitting end or the receiving end. The transmission of the HDMI protocol is in different directions from a SOURCE end (SOURCE end), i.e., a play end, to a SINK end (display end), i.e., a television, a display, and the like.

Referring to fig. 2, fig. 2 is a schematic diagram of an HDMI active optical cable. There are 4 pairs of high speed differential signal pairs, which correspond to three colors (RGB) of red, green and blue in the video signal and a set of clock signal pairs. The optical interconnection carries out photoelectric conversion on the 4 pairs of high-speed signal pairs at two ends of the cable, and the conversion is changed into optical signal transmission, so that ultra-long distance transmission which cannot be met by the prior copper wire technology is realized. Except for these 4 pairs of high speed signal differences, other signals are still transmitted as copper wires. Source (emission Source end), Sink (receiving display end), 5V (power supply positive electrode), CEC (consumer electronics protocol), CLK (high speed clock signal), GND (power ground), HPD (hot plug), PD (photodetector), SCL (low frequency control all the time signal), SDA (low frequency control data signal), TIA (transimpedance amplifier), TMDS (differential signal), VCSEL (vertical cavity surface emitting laser).

The high-speed signal is converted into an optical signal by the transmitting module 10, the optical signal is converted back into an electrical signal by the receiving module 20, and the control module 30 is used for selecting and communicating any one of the transmitting modules 10 to transmit the signal, so that the distribution and use of the HDMI2.1 are realized. The receiving module 20 is electrically connected to the control module 30 and can be used for transmitting low-speed signals. The transmitting module 10 and the receiving module 20 transmit optical signals to realize high-speed transmission of the distributor.

Example 1

Further, the transmitting module 10 is a female HDMI2.1TX module. The receiving module 20 is a female HDMI2.1RX module 21. The number of the female seat HDMI2.1TX modules 11, 12, 13 and 14 is 4.

The optical fiber branching device and the optical branching chip are used for combining 4 optical paths of the HDMI2.1TX modules 11, 12, 13 and 14 into one path.

Specifically, referring to fig. 3, fig. 3 is a schematic diagram of a 4-to-1 distributor. The transmission module 10 is an optoelectronic module with 4 HDMI2.1 transmission terminals, wherein 4 high-speed signals are converted into electrical signals in the module. The receiving module 20 is an optoelectronic module of 1 HDMI2.1 receiving end, where 4-way high-speed optical signals are converted back into electrical signals; the control module 30 is a selection circuit board, which is a circuit control part, and a user selects which one of the 4 SOURCE terminals needs to be switched on for transmission; the optical path part uses 4-path-in-one optical splitter, and the reverse use of the PLC is divided into a plurality of optical splitting chips, so that the function of combining 4 paths of light into one path of light is realized. With the implementation steps described above, the distribution problem of HDMI2.1 will be realized.

Through having set up the beam split chip, and the beam split chip is the plane optical waveguide chip, and the inside fixed mounting of plane optical waveguide chip has refraction glass piece, it can be with the light signal to have reached refraction glass piece, through the light path of different refracting indexes, thereby realize the processing of light path, with the light signal separation two ways adjustable light, then through the light signal converter, can convert the light signal who separates and form the information, signal decoding spreads out through HDMI output interface, through having set up energy ratio regulator, can be applicable to all video transmission protocols with same beam split chip, because the electro-optical conversion back has been passed through, all systems can all use the same beam split chip, therefore the light chip volume production nature and the suitability of easy cascade system.

Example 2

Further, the control module 30 includes a circuit board and a socket 31, and the HDMI2.1TX module and the HDMI2.1RX module are respectively connected to the circuit board through the socket.

Specifically, the circuit board is a four-out-of-one option circuit board, and 4 HDMI2.1TX modules and 1 HDMI2.1RX modules are inserted on the circuit board by using a row.

Example 3

A second aspect of the present invention provides a distribution system, including the HDMI optical path distributor described above, further including a source end and a display end, where the source end is connected to the transmitting module 10, and the display end is connected to the receiving module 20. The source end and the display end are both provided with HDMI interfaces.

Specifically, the source end may be an HMDI input device, and a signal source access port of the HDMI light path distributor is connected to the HMDI input device; the display end can be display device, and the signal output interface of HDMI light path distributor connects display device, connects the transmission through HMDI between HMDI input device and the display device, and the signal source access mouth of this embodiment is 4, consequently, when carrying out both connections, can 4 options 1 carry out arbitrary connections as required.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. An HDMI optical path distributor, characterized by: the device comprises a plurality of transmitting modules, a first photoelectric conversion module, a second photoelectric conversion module, a receiving module and a control module;

the first photoelectric conversion module is used for converting an electric signal into an optical signal; the second photoelectric conversion module is used for converting the optical signal into an electrical signal;

the transmitting module and the receiving module are electrically connected with the control module; the control module is used for gating and connecting any one of the transmitting modules.

2. The HDMI optical splitter of claim 1 wherein: the optical fiber branching device and the optical branching chip are used for combining the optical paths of the 4 HDMI2.1TX modules into one path.

3. The HDMI optical splitter of claim 2 wherein: the transmitting module is a female seat type HDMI2.1TX module; the receiving module is a female HDMI2.1RX module.

4. The HDMI optical splitter of claim 3 wherein: the number of the female seat HDMI2.1TX modules is 4.

5. The HDMI optical splitter of claim 4 wherein: the control module comprises a circuit board and a socket, and the HDMI2.1TX module and the HDMI2.1RX module are respectively connected to the circuit board through the socket.

6. A dispensing system, characterized by: the HDMI optical path distributor according to any of claims 1-5, further comprising a source terminal and a display terminal, wherein said source terminal is connected to said transmitter module, and said display terminal is connected to said receiver module.

7. The dispensing system of claim 6, wherein: the source end and the display end are both provided with HDMI interfaces.

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