CN212259190U

CN212259190U - Projection fusion system

Info

Publication number: CN212259190U
Application number: CN202021417292.6U
Authority: CN
Inventors: 赵鹏飞; 王宇腾; 杨珈
Original assignee: Beijing Weilin Video Technology Co ltd
Current assignee: Beijing Weilin Video Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-12-29
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to the technical field of projection equipment, in particular to a projection fusion system; the high-definition multimedia interface comprises an input interface, a link detection circuit, an HDbaseT interface and an HDMI interface, wherein the input interface is electrically connected with the link detection circuit, the link detection circuit is respectively and electrically connected with the HDbaseT interface and the HDMI interface, and the HDbaseT interface and the HDMI interface are both electrically connected with a projector through transmission cables. The utility model discloses a projection fusion system can realize the free switching from HDMI to HDbaseT, and does not need the manual programming and debugging; the ultra-long transmission distance, the high-resolution image quality, the low time delay and the low cost are realized.

Description

Projection fusion system

Technical Field

The utility model relates to a projection equipment technical field especially relates to a projection fusion system.

Background

In the projection fusion debugging, the projector generally possesses HDMI or DVI interface, and general projector is far away apart from fusion equipment simultaneously, and the process of image debugging transmission can be accomplished to the projector to the fuse ware through HDMI or DVI interface output signal.

Although a general fuser can ensure normal display and transmission of images through HDMI or DVI, it is too much to be expected for remote transmission in ultra-large fields. The HDMI or DVI protocol and cable limitation mainly cause that the transmission distance of the common HDMI does not exceed 20 m. If a high-specification cable, that is, a photoelectric integrated cable is used for transmission, although transmission over a distance of 100m or more can be achieved, the high price thereof results in a non-widespread application.

Therefore, in order to solve the above problems, it is urgently needed to invent a new projection fusion system.

Disclosure of Invention

The utility model aims to provide a: the projection fusion system can not only ensure the transmission distance, but also simultaneously take the problems of image quality transmission quality, compatibility and cost into consideration.

The utility model provides a following scheme:

the utility model provides a projection fusion system, includes input interface, link detection circuit, HDbaseT interface and HDMI interface, input interface with link detection circuit electricity is connected, link detection circuit electricity respectively connects HDbaseT interface with the HDMI interface, HDbaseT interface with the HDMI interface all passes through transmission cable electricity and connects the projector.

The link detection circuit comprises a first triode Q1, a second triode Q2 and a third triode Q3;

a first output end of the first triode Q1 is connected with an electric quantity output end, a second output end of the first triode Q1 is connected with a first output end of the second triode Q2, and a first resistor R1 is connected between an input end of the first triode Q1 and a second output end of the first triode Q1;

an input end of the second triode Q2 is connected with a first output end of the third triode Q3, a second output end of the second triode Q2 is grounded, and a fifth resistor R5 is connected between the input end of the second triode Q2 and the second output end of the second triode Q2;

a second output end of the third triode Q3 is grounded, and a seventh resistor R7 is connected between an input end of the third triode Q3 and a second output end of the third triode Q3;

an HDbaseT module is connected between the input end of the first triode Q1 and the first output end of the third triode Q3 in series; an HDMI module is connected in series between the first output end of the first triode Q1 and the input end of the third triode Q3.

The link detection circuit further comprises a diode D, a first output end of the first triode Q1 is connected with a reverse end of the diode D, and a forward end of the diode is connected with the HDMI module.

The link detection circuit further comprises a third resistor R3, the first output terminal of the third triode Q3 is connected with one end of the third resistor R3, and the other end of the third resistor R3 is connected with the HDbaseT module.

The link detection circuit further comprises a sixth resistor R6, the input end of the third triode Q3 is connected with one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected with the HDMI module.

The link detection circuit further comprises a second resistor R2, the second output terminal of the first transistor Q1 is connected to one terminal of the second resistor R2, and the other terminal of the second resistor R2 is connected to the first output terminal of the second transistor Q2.

The link detection circuit further comprises a fourth resistor R4, an input terminal of the second transistor Q2 is connected to one terminal of the fourth resistor R4, and the other terminal of the fourth resistor R4 is connected to the first output terminal of the third transistor Q3.

The link detection circuit further comprises a first capacitor, a first capacitor plate of the first capacitor is connected with a first output end of the first triode, and a second capacitor plate of the first capacitor is grounded.

The link detection circuit further comprises a second capacitor connected in parallel with the first capacitor.

The link detection circuit further comprises a third capacitor, a first capacitor plate of the third capacitor is connected with a common connection point of the sixth resistor and the seventh resistor, and a second capacitor plate of the third capacitor is grounded.

The utility model discloses the beneficial effect who produces:

the utility model discloses a projection fusion system, including input interface, link detection circuit, HDbaseT interface and HDMI interface, the input interface with link detection circuit electricity is connected, link detection circuit electricity respectively connect HDbaseT interface with the HDMI interface, HDbaseT interface with the HDMI interface all connects the projector through the transmission cable electricity; the free switching from HDMI to HDbaseT can be realized without manual programming and debugging; the ultra-long transmission distance, the high-resolution image quality, the low time delay and the low cost are realized.

Drawings

Fig. 1 is a block diagram of a projection fusion system according to the present invention.

Fig. 2 is a circuit diagram of the link detection circuit of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, a projection fusion system includes an input interface, a link detection circuit, an HDbaseT interface, and an HDMI interface, where the input interface is electrically connected to the link detection circuit, the link detection circuit is electrically connected to the HDbaseT interface and the HDMI interface, respectively, and both the HDbaseT interface and the HDMI interface are electrically connected to a projector through a transmission cable.

an HDbaseT module is connected between the input end of the first triode Q1 and the first output end of the third triode Q3 in series; an HDMI module is connected in series between a first output end of the first triode Q1 and an input end of the third triode Q3; the input interface is respectively and electrically connected with the HDbaseT module and the HDMI module; the HDbaseT module is used for collecting the trigger voltage of the HDbaseT, and 12V is adopted in the embodiment; and the HDMI module is used for collecting the trigger voltage of the HDMI, and the HDMI module adopts 9V in the embodiment.

The link detection circuit further comprises a third capacitor, a first capacitor plate of the third capacitor is connected with a common connection point of the sixth resistor and the seventh resistor, and a second capacitor plate of the third capacitor is grounded. And the signal output end is respectively and electrically connected with the HDbaseT interface and the HDMI interface.

The projection fusion system disclosed in the embodiment comprises an input interface, a link detection circuit, an HDbaseT interface and an HDMI interface, wherein the input interface is electrically connected with the link detection circuit, the link detection circuit is electrically connected with the HDbaseT interface and the HDMI interface respectively, and the HDbaseT interface and the HDMI interface are both electrically connected with a projector through transmission cables; the free switching from HDMI to HDbaseT can be realized without manual programming and debugging; the ultra-long transmission distance, the high-resolution image quality, the low time delay and the low cost are realized.

The projection fusion system disclosed in the embodiment, an input interface is used for providing input information; and the link detection circuit is used for switching the output display mode to the HDbaseT or HDMI signal in time according to the current requirement. HDbaseT and HDMI are output to the projector, and the output mode is selected according to the field environment to display.

In the projection fusion system disclosed in this embodiment, the general projectors all support the HDbaseT reception mode. When HDbaseT reception is adopted, the fusion device is inserted into the corresponding HDbaseT sending module, the fusion device can automatically detect the hardware link, and the HDMI output mode is switched to the HDbaseT output mode, and meanwhile, the HDMI output is bypassed. The operation is completely electrified and automatically detected by hardware, and manual and program control is not needed.

The projection fusion system disclosed in this embodiment is connected to the projector by using a CAT5e/CAT6 transmission cable, and the HDbaseT sending module automatically receives the communications by handshaking with the HDbaseT of the projector, and then can perform normal video transmission, and extend the HDMI transmission distance to more than 75 m. The utility model discloses a transmission distance not only can be guaranteed to the technique, still has compromise image quality transmission quality simultaneously, compatibility and cost problem.

In the projection fusion system disclosed in the embodiment, the use of the HDbaseT can be automatically switched, and the HDbaseT can realize long-distance transmission. Compared with the prior art, its advantage is: 1. the HDMI can be freely switched to HDbaseT without manual programming and debugging; 2. an ultra-long transmission distance; 3. high resolution image quality and low latency; 4. the cost is low; 5. the topological structure is simple, and the construction implementation is simple and easy.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A projection fusion system, characterized by: the high-definition multimedia interface comprises an input interface, a link detection circuit, an HDbaseT interface and an HDMI interface, wherein the input interface is electrically connected with the link detection circuit, the link detection circuit is respectively and electrically connected with the HDbaseT interface and the HDMI interface, and the HDbaseT interface and the HDMI interface are both electrically connected with a projector through transmission cables.

2. The projection fusion system of claim 1, wherein: the link detection circuit comprises a first triode, a second triode and a third triode;

a first output end of the first triode is connected with an electric quantity output end, a second output end of the first triode is connected with a first output end of the second triode, and a first resistor is connected between an input end of the first triode and a second output end of the first triode;

the input end of the second triode is connected with the first output end of the third triode, the second output end of the second triode is grounded, and a fifth resistor is connected between the input end of the second triode and the second output end of the second triode;

a second output end of the third triode is grounded, and a seventh resistor is connected between the input end of the third triode and the second output end of the third triode;

an HDbaseT module is connected in series between the input end of the first triode and the first output end of the third triode; and an HDMI module is connected in series between the first output end of the first triode and the input end of the third triode.

3. The projection fusion system of claim 2, wherein: the link detection circuit further comprises a diode, a first output end of the first triode is connected with a reverse end of the diode, and a forward end of the diode is connected with the HDMI module.

4. The projection fusion system of claim 3, wherein: the link detection circuit further comprises a third resistor, a first output end of the third triode is connected with one end of the third resistor R3, and the other end of the third resistor is connected with the HDbaseT module.

5. The projection fusion system of claim 4, wherein: the link detection circuit further comprises a sixth resistor, the input end of the third triode is connected with one end of the sixth resistor, and the other end of the sixth resistor is connected with the HDMI module.

6. The projection fusion system of claim 5, wherein: the link detection circuit further comprises a second resistor, a second output end of the first triode is connected with one end of the second resistor, and the other end of the second resistor is connected with a first output end of the second triode.

7. The projection fusion system of claim 6, wherein: the link detection circuit further comprises a fourth resistor, the input end of the second triode is connected with one end of the fourth resistor, and the other end of the fourth resistor is connected with the first output end of the third triode.

8. The projection fusion system of claim 7, wherein: the link detection circuit further comprises a first capacitor, a first capacitor plate of the first capacitor is connected with a first output end of the first triode, and a second capacitor plate of the first capacitor is grounded.

9. The projection fusion system of claim 8, wherein: the link detection circuit further comprises a second capacitor connected in parallel with the first capacitor.

10. The projection fusion system of claim 9, wherein: the link detection circuit further comprises a third capacitor, a first capacitor plate of the third capacitor is connected with a common connection point of the sixth resistor and the seventh resistor, and a second capacitor plate of the third capacitor is grounded.