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Display screen control card

A technology for display control and signal transmission, applied in static indicators, instruments, etc., can solve the problems of complex connection methods and large connection errors, achieve the effect of simple connection methods and reduce the possibility of connection errors

Active Publication Date: 2019-01-04
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a display screen control card, which solves the problem that the adjacent display modules in the display screen need to be interconnected by extending the network cable, the connection method is complicated, and the possibility of connection error is high

Method used

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Examples

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Effect test

no. 1 example

[0014] Please refer to figure 2 , figure 2 It is a schematic structural diagram of a display screen control card provided by an embodiment of the present invention. The display control card includes:

[0015] The circuit board (not shown in the figure) and the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 arranged on the circuit board, the first signal transmission interface 1, The second signal transmission interface 2 , the third signal transmission interface 3 and the fourth signal transmission interface 4 are respectively arranged on four sides of the circuit board.

[0016] Further, on the basis of the above embodiments, the first signal transmission interface 1 , the second signal transmission interface 2 , the third signal transmission interface 3 and the fourth signal transmission interface 4 are all network ports such as gigabit network por...

no. 2 example

[0039] This embodiment further describes the working principle of the display screen control card provided by the embodiment of the present invention on the basis of the first embodiment. On the basis of the above embodiments, if the Ethernet physical layer transceiver detects that the differential input signals of the first signal transmission interface 1, the second signal transmission interface 2, the third signal transmission interface 3 and the fourth signal transmission interface 4 are all normal signal, then:

[0040] The first network transformer 11 receives multiple first differential signals input by the first signal transmission interface 1 and sends them to the first transceiver 12, and the first transceiver 12 converts the multiple first differential signals into multiple first single-ended receiving signals. The signal and the multiplexed first single-ended transmit signal are then processed by the programmable logic device 50;

[0041] The second network transf...

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Abstract

The embodiment of the invention discloses a display screen control card, a circuit board and a first signal transmission interface, a second signal transmission interface, a third signal transmissioninterface and a fourth signal transmission interface arranged on the circuit board. The first signal transmission interface, the second signal transmission interface, the third signal transmission interface and the fourth signal transmission interface are respectively arranged at four sides of the circuit board. Thus, adjacent display modules in the display screen do not need to be interconnectedby extending a signal line, the connection mode is simple and the possibility of connection errors is reduced.

Description

technical field [0001] The invention relates to the technical field of display control, in particular to a display screen control card. Background technique [0002] With the development of small-pitch LED displays, LED displays are used more and more in the commercial field. In the traditional LED display control card, each control card is usually cascaded with each other through a Gigabit Ethernet port RJ45 interface and installed inside the cabinet, and the cabinets are connected by a network cable. [0003] Such as figure 1 as shown, figure 1 It is a schematic diagram of the connection method of the display screen control card in the prior art. The display control cards in the prior art are all two Gigabit Ethernet ports, one in and one out for cascading, and the LED cabinets serving as display modules are connected through the cascading of the display control cards. exist figure 1 Among them, four display control cards correspond to four LED cabinets. Since the sh...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 刘延梁伟
Owner XIAN NOVASTAR TECH
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