CN217467969U

CN217467969U - LED display screen module adopting converter to transmit signals

Info

Publication number: CN217467969U
Application number: CN202221055606.1U
Authority: CN
Inventors: 姜长冰
Original assignee: Shenzhen Ruisiwei Electronic Technology Co ltd
Current assignee: Shenzhen Ruisiwei Electronic Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-20
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses an adopt converter transmission signal's LED display screen module, include: the system comprises a receiving card, an FPGA (field programmable gate array), a parallel-to-serial converter, an LED module and a serial-to-parallel converter, wherein the FPGA, the parallel-to-serial converter and the LED module are integrated on the receiving card; the FPGA is electrically connected with a parallel-serial converter, and the parallel-serial converter is electrically connected with the serial-parallel converter through a cable; the parallel-serial converter converts the parallel signals to be transmitted to the LED module by the receiving card into LVDS serial signals and transmits the LVDS serial signals to the serial-parallel converter, and the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED module. The parallel signal of LVDS serial signal after the conversion of serial-to-parallel converter can directly drive the LED lamp panel, need not to arrange FPGA or other treater on the LED module and resume and handle serial signal, very big reduction the cost of module.

Description

LED display screen module adopting converter to transmit signals

Technical Field

The utility model relates to a LED display screen technical field especially relates to an adopt converter transmission signal's LED display screen module.

Background

The signal transmission of the LED display module has two modes.

Referring to fig. 1, the first type is a receiving card carrying a plurality of modules, the receiving card transmits a plurality of parallel signals to each LED module, the width of the signal line for transmitting the signals is usually 16-32 bits wide according to the difference of the resolution and the scanning number of the LED modules, and the signals are TTL common electrical signals. The connection is usually flat cable or directly through multi-pin hard connection to plug terminal. This case uses a large number of flat wires or hard connection terminals, which leads to an increase in the width of the flat cable and poor reliability of the flat cable over long-term use because of the large number of parallel signal lines. Moreover, the adopted flat cable transmits TTL signals, so that the radiation is large, and EMC tests cannot be passed.

Referring to fig. 2, the second type is a module integrated receiving card, which is equivalent to a receiving card driving an LED module, and the receiving card also transmits parallel signals to the LED module. The RJ45 network line is used for connecting the receiving cards, and the signal is LVDS signal output from gigabit Ethernet PHY. In this case, although LVDS signals are transmitted, one receiving card is required for each LED module, resulting in an increase in cost.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: an LED display module using a converter to transmit signals is provided to solve the problems mentioned in the background art.

The technical scheme of the utility model as follows: the utility model provides an adopt LED display screen module of converter transmission signal includes: the system comprises a receiving card, an FPGA, a parallel-serial converter, an LED module and a serial-parallel converter, wherein the FPGA, the parallel-serial converter and the LED module are integrated on the receiving card; the FPGA is electrically connected with a parallel-serial converter, and the parallel-serial converter is electrically connected with the serial-parallel converter through a cable; the parallel-serial converter converts the parallel signals to be transmitted to the LED module by the receiving card into LVDS serial signals and transmits the LVDS serial signals to the serial-parallel converter, and the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED module. The LED module includes: the LED constant current chip and the LED lamp panel; the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED constant current chip, and an additional FPGA (field programmable gate array) does not need to be arranged on the LED module for processing.

The FPGA in the receiving card transmits the parallel signals to the parallel-serial converter, the parallel-serial converter converts the parallel signals into LVDS serial signals and sends the LVDS serial signals to the serial-parallel converter on the LED module, and the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED constant current chip and the LED lamp panel, so that the LED module can normally operate. The parallel signal of LVDS serial signal after serial-to-parallel converter conversion can directly drive the LED lamp panel, and FPGA or other processors do not need to be arranged on the LED module to recover and process the serial signal, thus greatly reducing the cost of the module; moreover, LVDS serial signals are adopted between the receiving card and the LED module to transmit signals, so that the width of the cable can be effectively reduced, EMC radiation can be reduced, and the cost can be further reduced.

Further, the parallel signal comprises: and providing a data signal for displaying an image, a line scanning signal for scanning the LED lamp panel and a control signal of the LED constant current chip.

Furthermore, the LVDS serial signals are 1-4 groups, and the corresponding cables are 2-8 signal lines.

By adopting the scheme, the utility model provides an adopt converter transmission signal's LED display screen module, LVDS serial signal can directly drive the LED lamp plate through the parallel signal after the serial-parallel converter conversion, need not to arrange FPGA or other treater on the LED module and resume and handle serial signal, very big reduction the cost of module; moreover, LVDS serial signals are adopted between the receiving card and the LED module to transmit signals, so that the width of a cable can be effectively reduced, EMC radiation can be reduced, and the cost can be further reduced.

Drawings

FIG. 1 is a functional block diagram of a prior art;

FIG. 2 is a functional block diagram of another prior art;

FIG. 3 is a functional block diagram of an embodiment of the present invention;

FIG. 4 is a circuit schematic of a parallel to serial converter;

fig. 5 is a circuit schematic of a serial to parallel converter.

Detailed Description

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

Referring to fig. 3 to 5, the present embodiment provides an LED display module using a converter to transmit signals, including: the system comprises a receiving card 10, an FPGA11 integrated on the receiving card 10, a parallel-serial converter 12, an LED module 13 and a serial-parallel converter 14 integrated on the LED module 13; the FPGA11 is electrically connected to the parallel-to-serial converter 12, and the parallel-to-serial converter 12 is electrically connected to the serial-to-parallel converter 14 through a cable 15; the parallel-to-serial converter 12 converts the parallel signal to be transmitted to the LED module 13 of the receiving card 10 into an LVDS serial signal and transmits the LVDS serial signal to the serial-to-parallel converter 14, and the serial-to-parallel converter 14 converts the LVDS serial signal into a parallel signal and outputs the parallel signal to the LED module 13. The LED module 13 includes: an LED constant current chip 16 and an LED lamp panel 17; the serial-to-parallel converter 14 converts the LVDS serial signal into a parallel signal and outputs the parallel signal to the LED constant current chip 16 without arranging additional FPGA processing in the LED module 13.

The FPGA11 in the receiving card 10 transmits the parallel signal to the parallel-to-serial converter, the parallel-to-serial converter 12 converts the parallel signal into an LVDS serial signal and transmits the LVDS serial signal to the serial-to-parallel converter 14 on the LED module 13, and the serial-to-parallel converter 14 converts the LVDS serial signal into a parallel signal and outputs the parallel signal to the LED constant current chip and the LED lamp panel, so that the LED module 13 operates normally. The parallel signal of the LVDS serial signal converted by the serial-to-parallel converter 14 can directly drive the LED lamp panel, and the FPGA11 or other processors are not required to be arranged on the LED module 13 to recover and process the serial signal, so that the cost of the module is greatly reduced; moreover, the LVDS serial signal transmission is adopted between the receiving card 10 and the LED module 13, so that the width of the cable 15 can be effectively reduced, which is beneficial to reducing EMC radiation and can further reduce cost.

In this embodiment, the parallel signal includes: data signals for displaying images, line scanning signals for scanning the LED lamp panel 17, and control signals for the LED constant current chip 16 are supplied.

In this embodiment, the LVDS serial signals are 1-4 sets, and the corresponding cables 15 are 2-8 signal lines.

To sum up, the utility model provides an adopt the LED display screen module of converter transmission signal, LVDS serial signal can directly drive the LED lamp plate through the parallel signal after the serial-parallel converter conversion, need not to arrange FPGA or other treater on the LED module and resume and handle serial signal, very big reduction the cost of module; moreover, LVDS serial signals are adopted between the receiving card and the LED module to transmit signals, so that the width of a cable can be effectively reduced, EMC radiation can be reduced, and the cost can be further reduced.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an adopt converter transmission signal's LED display screen module which characterized in that includes: the system comprises a receiving card, an FPGA (field programmable gate array), a parallel-to-serial converter, an LED module and a serial-to-parallel converter, wherein the FPGA, the parallel-to-serial converter and the LED module are integrated on the receiving card; the FPGA is electrically connected with a parallel-serial converter, and the parallel-serial converter is electrically connected with the serial-parallel converter through a cable; the parallel-serial converter converts the parallel signals to be transmitted to the LED module by the receiving card into LVDS serial signals and transmits the LVDS serial signals to the serial-parallel converter, and the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED module.

2. The LED display screen module with the converter for transmitting signals according to claim 1, wherein the LED module comprises: the LED constant current chip and the LED lamp panel; the serial-parallel converter converts the LVDS serial signals into parallel signals and outputs the parallel signals to the LED constant current chip.

3. The LED display screen module of claim 2, wherein the parallel signal comprises: and providing a data signal for displaying an image, a line scanning signal for scanning the LED lamp panel and a control signal of the LED constant current chip.

4. The LED display screen module adopting the converter to transmit signals according to claim 1, wherein the LVDS serial signals are in 1-4 groups, and the corresponding cables are 2-8 signal lines.