CN212303016U

CN212303016U - LCD screen interface conversion circuit of intelligent financial payment equipment

Info

Publication number: CN212303016U
Application number: CN202021387096.9U
Authority: CN
Inventors: 谢海滨; 张克勤
Original assignee: Finance Metadata Information Solution Shenzhen Co ltd
Current assignee: Finance Metadata Information Solution Shenzhen Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-01-05
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses an intelligence financial payment equipment's LCD screen interface conversion circuit, including signal converter and MIPI connector, LVDS connector, HDMI connector and the level transition module all connected with it, this converting circuit passes through MIPI connector input MIPI's video signal to convert the video signal into the video signal of LVDS and HDMI form and export. The utility model discloses an increase IC converting circuit and be signal converter, realize the compatible different display interface of an equipment, increased product application range, also avoided the inconvenience that the incompatible problem of interface brought in the in-service use.

Description

LCD screen interface conversion circuit of intelligent financial payment equipment

Technical Field

The utility model relates to a circuit field, in particular to LCD screen interface conversion circuit of intelligence financial payment equipment.

Background

The display interfaces are various, and commonly used interfaces include LVDS, HDML, EDP, and the like, which correspond to different scenes. There is different use scenes in an intelligent device in-service use, and the different scene user demands of equipment can't be satisfied to the unable meeting of common single interface, consequently the utility model discloses propose the improvement to prior art.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides an intelligence financial payment equipment's LCD screen interface conversion circuit.

In order to achieve the above purpose, the specific scheme of the utility model is as follows:

the LCD screen interface conversion circuit comprises a signal converter, and an MIPI connector, an LVDS connector, an HDMI connector and a level conversion module which are connected with the signal converter, wherein the conversion circuit inputs MIPI video signals through the MIPI connector and converts the MIPI video signals into LVDS and HDMI format video signals for output.

Preferably, the signal converter comprises a conversion chip LT 8912B.

Preferably, the level shift module includes MOS transistors Q2 to Q5, and is configured to perform level shift on the control signal.

Preferably, the conversion circuit further comprises a voltage stabilization module connected to the signal converter.

Preferably, the voltage stabilizing module comprises capacitors C5-C13.

Preferably, the conversion circuit further comprises a crystal connected to the signal converter.

Preferably, the conversion circuit further comprises a device monitoring module connected with the signal converter, and the device monitoring module is connected with the real device.

Preferably, the equipment monitoring module comprises a transistor Q1 and resistors R1, R2 and R4 at the periphery of the transistor Q1.

Preferably, the conversion circuit further comprises a power supply module.

Adopt the technical scheme of the utility model, following beneficial effect has:

the utility model discloses an increase IC converting circuit and be signal converter, realize the compatible different display interface of an equipment, increased product application range, also avoided the inconvenience that the incompatible problem of interface brought in the in-service use.

Drawings

FIG. 1 is a functional block diagram of the present invention;

fig. 2 is a partial circuit diagram of the signal converter of the present invention;

fig. 3 is a partial circuit diagram of the signal converter of the present invention;

fig. 4 is a partial circuit diagram of the signal converter of the present invention;

fig. 5 is a circuit diagram of the MIPI connector of the present invention;

fig. 6 is a circuit diagram of the LVDS connector of the present invention;

fig. 7 is a circuit diagram of the HDMI connector of the present invention;

fig. 8 is a circuit diagram of the level shift module of the present invention;

fig. 9 is a circuit diagram of the voltage stabilizing module of the present invention;

fig. 10 is a circuit diagram of the device monitoring module of the present invention;

fig. 11 is a circuit diagram of the power module of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, the utility model provides an intelligence financial payment equipment's LCD screen interface conversion circuit, including signal converter 1 and MIPI connector 2, LVDS connector 3, HDMI connector 4 and the level conversion module 5 all connected with it, this conversion circuit passes through MIPI connector 2 input MIPI's video signal to convert the video signal into the video signal of LVDS and HDMI form and export.

Referring to fig. 2 to 4, the signal converter 1 includes a conversion chip LT 8912B.

Referring to fig. 2 and 5, the MIPI connector 2 outputs a display signal from the MIPI connector 2 to the signal converter 1 by connecting the signal converter 1, and the periphery of the MIPI connector 2 also performs input filtering through C1.

Referring to fig. 2 and 6, the LVDS connector 3 is connected to the signal converter 1 to output the signal from the android system and converted into LVDS by the signal converter 1 to the LVDS connector 3, and a pin GT911INT R14 of the LVDS connector 3 is connected to a pin 3.3INT of the MIPI connector 2 to realize device monitoring.

Referring to fig. 4, 7 and 10, the signal converter 1 is connected to the device monitoring module 8, the device monitoring module 8 is connected to the display device 9, when the display device 9 is not connected, the HPD-DET is low, the Q1 is off, and thus the TX-HPD is also low, and the display device 9 will not be detected by the signal converter 1; when the display device 9 is connected, the HPD-DET is at a high level, the Q1 is turned on, and the TX-HPD terminal is also at a high level to be detected by the signal converter 1, where R1 and R4 function as current limiting, achieving low power consumption, and when the display device 9 is connected and detected by the signal converter 1, a signal from the android system and converted into HDMI by the signal converter 1 is thereby output from the signal converter 1 to the HDMI connector 4.

Referring to fig. 8, the level shift module 5 includes MOS transistors Q2 to Q5 for performing level shift on the control signal.

Referring to fig. 1 and 9, the conversion circuit further includes a voltage stabilizing module 7 connected to the signal converter 1 for ensuring stable operation of the signal converter 1, where the voltage stabilizing module 7 includes capacitors C5-C13.

The conversion circuit further comprises a crystal 6 connected with the signal converter 1 and peripheral capacitors C14 and C16 thereof, and the crystal 6 is used for adjusting oscillation of the crystal 6, so that the signal converter 1 is stabilized at a set frequency point, thereby realizing plug and play of HDMI, and compatibility of HDMI and LVDS.

Referring to fig. 11, the conversion circuit further includes a power supply module (not shown in fig. 1) for supplying power to the MIPI connector 2, the LVDS connector 3, the HDMI connector 4, and the device monitoring module 8.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the protection scope of the present invention.

Claims

1. The LCD screen interface conversion circuit of the intelligent financial payment equipment is characterized by comprising a signal converter, and an MIPI connector, an LVDS connector, an HDMI connector and a level conversion module which are connected with the signal converter, wherein the conversion circuit inputs MIPI video signals through the MIPI connector and converts the MIPI video signals into LVDS and HDMI video signals for output.

2. The LCD screen interface converting circuit of intelligent financial payment device according to claim 1, wherein said signal converter comprises a converting chip LT 8912B.

3. The LCD screen interface conversion circuit of the intelligent financial payment device as claimed in claim 2, wherein the level conversion module comprises MOS transistors Q2-Q5 for level conversion of the control signal.

4. The LCD screen interface conversion circuit of intelligent financial payment device of claim 3, wherein the conversion circuit further comprises a voltage stabilization module connected to the signal converter.

5. The LCD screen interface conversion circuit of the intelligent financial payment device of claim 4, wherein the voltage stabilization module comprises capacitors C5-C13.

6. The LCD screen interface conversion circuit of an intelligent financial payment device of claim 5, further comprising a crystal connected to the signal converter.

7. The LCD screen interface conversion circuit of intelligent financial payment device of claim 6, further comprising a device monitoring module connected with the signal converter, said device monitoring module connected with a real device.

8. The LCD screen interface conversion circuit of intelligent financial payment device of claim 7, wherein said device monitoring module comprises transistor Q1 and its peripheral resistors R1, R2 and R4.

9. The LCD screen interface conversion circuit of an intelligent financial payment device of claim 8, wherein the conversion circuit further comprises a power module.