Liquid crystal screen display control system supporting cascade connection

Abstract

The utility model discloses a liquid crystal screen display control system supporting cascading, which comprises a plurality of cascaded control modules, and each control module comprises an MCU (Microprogrammed Control Unit), a signal isolation IC (Integrated Circuit), a signal driving IC, an LCD signal interface, a power supply and signal input interface and a power supply and signal output interface, the MCU is used for receiving the video data transmitted by the serial port of the power supply and signal input interface and isolated by the signal isolation IC during transmission, and then controlling the corresponding LCD display module to display the corresponding content through the LCD signal interface, and the signal driving IC is used for driving the video data transmitted by the serial port of the power supply and signal input interface again. The signal is sent to the power supply and signal output interface; according to the utility model, the problem that a plurality of signal processing control units need to be designed to achieve a plurality of display effects in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of display control, in particular to a liquid crystal display control system supporting cascade. Background Art

[0002] Existing LCD screen controls are usually single-node controls, that is, one signal processing control module only supports one display. When multiple displays are required, multiple signal processing control modules need to be designed to achieve the effect of multiple displays, which will lead to bloated equipment and high costs. Utility Model Content

[0003] In view of the above technical problems, the present invention provides a cascade-supported liquid crystal display control system to solve the problem in the prior art that multiple signal processing control units need to be designed to achieve multiple display effects.

[0004] Other features and advantages of the present invention will become apparent from the following detailed description, or may be learned in part from the practice of the present invention.

[0005] A cascade-supported liquid crystal display control system, the system comprising a plurality of cascaded control modules, the control modules comprising an MCU, a signal isolation IC, a signal driver IC, an LCD signal interface, a power supply and signal input interface, and a power supply and signal output interface. The MCU is used to receive video data transmitted via a serial port of the power supply and signal input interface and isolated by the signal isolation IC during transmission, and then control the corresponding LCD display module to display corresponding content via the LCD signal interface. The signal driver IC is used to re-drive the video data transmitted via the serial port of the power supply and signal input interface and send it to the power supply and signal output interface.

[0006] Furthermore, the MCU is also connected to the font ROM.

[0007] Furthermore, the system also includes a control and power supply unit. When multiple control modules are cascaded, the control module at the first position is connected to the control and power supply unit. The control and power supply unit transmits the processed video data and realizes power supply in sequence through the power and signal input interface and the power and signal output interface of each control module.

[0008] The technical solution of the utility model has the following beneficial effects:

[0009] Multiple control modules are connected in series to form a control system. Each LCD display module can be controlled separately without affecting each other. Even if a control module is damaged, the subsequent stage can still work normally. Only one control and power supply unit is needed, which can effectively save equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural block diagram of a liquid crystal display control system supporting cascade according to an embodiment of this specification;

[0011] Figure 2 This is a structural block diagram of a cascade-supporting LCD display control system according to an embodiment of this specification. DETAILED DESCRIPTION

[0012] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or that other components, devices, steps, etc. may be employed. In other cases, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0013] like Figure 1-2 As shown, a cascade-supporting LCD display control system includes multiple cascaded control modules 100, and the control module 100 includes an MCU 101, a signal isolation IC 102, a signal driver IC 103, an LCD signal interface 104, a power supply and signal input interface 105, and a power supply and signal output interface 106. The MCU 101 is used to receive the video data transmitted through the serial port of the power supply and signal input interface 105 and isolated by the signal isolation IC 102 during transmission, and then control the corresponding LCD display module 107 to display the corresponding content through the LCD signal interface 104. The signal driver IC 103 is used to re-drive the video data transmitted through the serial port of the power supply and signal input interface 105 and send it to the power supply and signal output interface 106.

[0014] The MCU 101 is also connected to the character library ROM. In the present invention, each level of the control module 100 can use the same hardware, and use different numbers in the character library ROM to implement different software identifiers. The control and power supply unit 200 can identify different modules through the software identifiers, thereby achieving independent control of multiple control modules 100.

[0015] The system also includes a control and power supply unit 200. When multiple control modules 100 are cascaded, the leading control module 100 is connected to the control and power supply unit 200. The control and power supply unit 200 sequentially transmits processed video data and provides power through the power and signal input interface 105 and power and signal output interface 106 of each control module 100. The present invention, through the design of the signal driver IC 103 and the signal isolation IC 102, enables the control modules 100 to effectively support cascading, without causing signal quality degradation due to cascading or the failure of subsequent stages due to a module failure.

[0016] In summary, the control module 100 consists of an LCD display module 107, an MCU 101, a font ROM, a signal isolation IC 102, a signal driver IC 103, and corresponding power and signal input interfaces 105 and 106. The MCU 101 is responsible for receiving data from the UART (serial port) and controlling the display of the LCD display module 107; the signal isolation IC 102 is responsible for isolating the signal of the control module 100 from the interconnected signal; and the signal driver IC 103 re-drives the signal to avoid signal quality degradation after cascading. The control and power supply unit 200 is responsible for supplying power to each control module 100 and sending data via the UART.

[0017] Among them, based on the control system composed of multiple control modules 100 connected in series and cascaded, each LCD display module 107 can be controlled separately without affecting each other. Even if a control module 100 is damaged, the subsequent stage can still work normally. Only one control and power supply unit 200 is needed, which can effectively save equipment costs.

[0018] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that the technical solutions described in the aforementioned embodiments may be modified or some or all of the technical features therein may be replaced with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the various embodiments of the present invention. Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features but not other features included in other embodiments, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is intended solely to enhance understanding of the overall background technology of the present invention and should not be construed as an admission or any form of implication that such information constitutes prior art already known to those skilled in the art.

Claims

1. A cascade-supported LCD display control system, characterized in that: The system includes multiple cascaded control modules, which include an MCU, a signal isolation IC, a signal driver IC, an LCD signal interface, a power supply and signal input interface, and a power supply and signal output interface. The MCU is used to receive the video data transmitted through the serial port of the power supply and signal input interface and isolated by the signal isolation IC during transmission, and then control the corresponding LCD display module to display the corresponding content through the LCD signal interface. The signal driver IC is used to re-drive the video data transmitted through the serial port of the power supply and signal input interface and send it to the power supply and signal output interface.

2. The cascade-supporting LCD display control system according to claim 1, characterized in that: The MCU is also connected to the font ROM.

3. The cascade-supporting LCD display control system according to claim 1, characterized in that: The system also includes a control and power supply unit. When multiple control modules are cascaded, the control module at the top is connected to the control and power supply unit. The control and power supply unit transmits the processed video data and realizes power supply in sequence through the power and signal input interface and the power and signal output interface of each control module.

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