CN218729848U

CN218729848U - LED display module with novel interface

Info

Publication number: CN218729848U
Application number: CN202222996543.6U
Authority: CN
Inventors: 李惠富; 吴兵; 赵亚飞
Original assignee: Shenzhen Daying Vision Technology Co ltd
Current assignee: Shenzhen Daying Vision Technology Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-24
Anticipated expiration: 2032-11-10

Abstract

The utility model discloses a novel LED display module assembly of interface, include: the system comprises a control system coding unit, a data transmission cable and a decoding unit; the control system coding unit is connected with the decoding unit through a data transmission cable; the control system encoding unit comprises an encoder I, a parallel-serial conversion unit and a TMDS transmitter; the encoder is electrically connected with the corresponding end of the TMDS transmitter through the parallel-serial conversion unit, converts the red, green and blue pixel data and the control signal into a serial TMDS signal, and transmits the serial TMDS signal through the TMDS transmitter through the data transmission cable. The utility model discloses a bandwidth is bigger, speed is faster, interference immunity is good, the lower minimizing transmission differential signal TMDS serial communication link of consumption replaces present general parallel circuit, and transmission voltage reduces to 0.5V from 3.3V to improve the reliability of transmission, reduce EMI radiation, reduce the consumption, reduce the data line, energy-concerving and environment-protective.

Description

LED display module with novel interface

Technical Field

The utility model relates to a LED technical field, in particular to LED display module assembly of novel interface.

Background

The interface of the traditional LED display module adopts parallel TTL level signal transmission, one data line transmits one signal, and the traditional LED display module is characterized by simplicity and easy use, and has the defects of high voltage requirement, easy interference, large electromagnetic radiation, high power consumption and more used data lines.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a novel LED display module assembly of interface.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides a LED display module assembly of novel interface, includes: the system comprises a control system coding unit, a data transmission cable and a decoding unit;

the control system coding unit is connected with the decoding unit through a data transmission cable;

the control system coding unit comprises a first coder, a parallel-serial conversion unit and a TMDS transmitter; the encoder is electrically connected with the corresponding end of the TMDS transmitter through the parallel-serial conversion unit, converts the red, green and blue pixel data and the control signal into a serial TMDS signal, and transmits the serial TMDS signal through the TMDS transmitter through a data transmission cable;

the decoding unit comprises a TMDS receiver, a second encoder and a serial-parallel conversion unit; one end of the TMDS receiver is connected with the TMDS transmitter through a data transmission cable, the other end of the TMDS receiver is connected with the serial-parallel conversion unit through a second encoder, and the TMDS receiver recovers red, green and blue pixel data and control signal data after receiving serial TMDS signals, converts the red, green and blue pixel data and the control signal data into parallel data and outputs the parallel data to a driving IC of the LED display module to drive the LED lamp beads.

Preferably, the data transmission cable comprises a shielding layer and a twisted pair penetrating through the shielding layer.

Preferably, the number of the first encoders is four, the number of the parallel-serial conversion units is four, and the first four encoders correspondingly convert the red, green and blue pixel data and the control signal into serial TMDS signals through the four-serial conversion units, and the serial TMDS signals are sent out through the TMDS transmitter.

Preferably, the number of the second encoder and the number of the serial-to-parallel conversion units are four, the TMDS receiver receives serial TMDS signals, and then recovers the serial TMDS signals into red, green and blue pixel data and control signal data through the second four encoders, and then the data are converted into parallel data through the four serial-to-parallel conversion units and output to a driving IC of the LED display module to drive the LED lamp beads.

Preferably, the parallel-to-serial conversion unit is a parallel-to-serial converter, and the serial-to-parallel conversion unit is a serial-to-parallel converter.

Adopt the technical scheme of the utility model, following beneficial effect has: the utility model discloses a TMDS serial signal that anti-interference is better replaces traditional parallel signal, has adopted that the bandwidth is bigger, speed is faster, interference immunity is good, the minimizing transmission differential signal TMDS serial communication link that the consumption is lower replaces current general parallel circuit, and transmission voltage reduces to 0.5V from 3.3V to improve the reliability of transmission, reduce EMI radiation, reduce the consumption, reduce the data line, energy-concerving and environment-protective.

Drawings

FIG. 1 is a control schematic diagram of the present invention;

fig. 2 is a schematic view of the data transmission cable structure of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be 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 according to specific situations by those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "is connected to" the second feature

"under" may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact, but being in contact with each other through additional features between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 2, the utility model provides a novel LED display module assembly of interface, include: a control system encoding unit 10, a data transmission cable 20, a decoding unit 30;

the control system encoding unit 10 is connected with the decoding unit 30 through a data transmission cable 20;

the control system encoding unit 10 comprises an encoder I100, a parallel-serial conversion unit 200 and a TMDS transmitter 300; the encoder I100 is electrically connected with the corresponding end of the TMDS transmitter 300 through the parallel-serial conversion unit 200, converts the red, green and blue pixel data and the control signal into a serial TMDS signal, and transmits the serial TMDS signal through the TMDS transmitter 300 through the data transmission cable 20;

the decoding unit 30 comprises a TMDS receiver 500, a second encoder 600, and a serial-to-parallel conversion unit 700; one end of the TMDS receiver 500 is connected with the TMDS transmitter 300 through the data transmission cable 20, the other end of the TMDS receiver is connected with the serial-parallel conversion unit 700 through the second encoder 600, and the TMDS receiver 500 recovers red, green and blue pixel data and control signal data after receiving serial TMDS signals, converts the red, green and blue pixel data and the control signal data into parallel data and outputs the parallel data to a driving IC of the LED display module to drive the LED lamp beads.

The data transmission cable 20 includes a shielding layer 201 and twisted pairs 202 passing through the shielding layer 201, wherein one of the twisted pairs 202 transmits an original signal, and the other transmits a signal opposite to the original signal. Thus, the receiving end can shield the electromagnetic interference by subtracting the signal on one line from the signal on the other line, so as to obtain the correct signal. One or more groups of data lines are used for transmitting red, green and blue pixel signals and control signals, one group of data lines are used for transmitting clock signals, and one group of data lines are used for transmitting correction data, so that the number of data lines is greatly reduced, and the traditional 16-26 data line transmission mode can be completely realized by only 8 ground lines.

The number of the first encoders 100 is four, the number of the parallel-serial conversion units 200 is four, and the first four encoders 100 correspondingly convert red, green and blue pixel data and control signals into serial TMDS signals through the four-serial conversion units 200, and the serial TMDS signals are transmitted through the TMDS transmitter 300. The number of the second encoder 600 and the serial-parallel conversion unit 700 is set to be four, after receiving the serial TMDS signal, the TMDS receiver 500 recovers the serial TMDS signal into red, green and blue pixel data and control signal data through the second four encoder 600, and then the four serial-parallel conversion unit 700 converts the serial TMDS signal into parallel data and outputs the parallel data to the driving IC of the LED display module to drive the LED lamp bead. The parallel-to-serial conversion unit 200 is set as a parallel-to-serial converter, and the serial-to-parallel conversion unit 700 is set as a serial-to-parallel converter.

The utility model discloses the theory of operation as follows:

the control system coding unit 10 converts the parallel red, green and blue pixel data and the control signal into a serial signal, and transmits the serial signal after TMDS coding. The TMDS differential transmission technique of the data transmission cable 20 is a technique for transmitting signals by using a voltage difference between 2 pins; that is, 2 lines are used to transmit signals, one line transmits the original signal, and the other line transmits the signal opposite to the original signal. Therefore, the receiving end can shield electromagnetic interference by subtracting the signal on one line from the signal on the other line, so as to obtain a correct signal; the decoding unit 30 recovers red, green and blue pixel data and control signal data after receiving the serial TMDS signal, recovers a clock signal at the same time, converts the clock signal into parallel data, outputs the parallel data to a driving IC of the display module, and drives the LED lamp bead.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a LED display module assembly of novel interface which characterized in that includes: the system comprises a control system coding unit, a data transmission cable and a decoding unit;

2. The LED display module of the novel interface of claim 1, wherein the data transmission cable comprises a shielding layer and a twisted pair passing through the shielding layer.

3. The LED display module of claim 1, wherein the number of the first encoder is four, the number of the parallel-serial conversion units is four, and the first four encoders convert the RGB pixel data and the control signal into serial TMDS signals through the four serial conversion units, and transmit the serial TMDS signals through the TMDS transmitter.

4. The LED display module of claim 3, wherein the number of the second encoder and the serial-to-parallel conversion unit is four, the TMDS receiver receives the serial TMDS signals, and then recovers the serial TMDS signals to red, green and blue pixel data and control signal data through the second four encoders, and then the data is converted to parallel data through the fourth serial-to-parallel conversion unit and output to the driving IC of the LED display module to drive the LED lamp.

5. The LED display module of claim 4, wherein the parallel-to-serial conversion unit is a parallel-to-serial converter, and the serial-to-parallel conversion unit is a serial-to-parallel converter.