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Conversion circuit, control method for conversion circuit, and display device

A conversion circuit and circuit technology, applied in the field of conversion circuits and display devices, can solve the problem that 4-wire SPI cannot read data accurately, and achieve the effect of solving data conflicts

Active Publication Date: 2020-11-03
SHANGHAI AVIC OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a conversion circuit, a control method of the conversion circuit, and a display device, which can solve the problem that when the data of the input terminal SDI of the 4-wire SPI conflicts with the data of the data terminal SDA of the 3-wire SPI, the output terminal of the 4-wire SPI The problem of not being able to read the data accurately

Method used

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  • Conversion circuit, control method for conversion circuit, and display device
  • Conversion circuit, control method for conversion circuit, and display device
  • Conversion circuit, control method for conversion circuit, and display device

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Embodiment Construction

[0018] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the application, not to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0019] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require o...

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Abstract

The invention discloses a conversion circuit, a control method of the conversion circuit and a display device. The circuit comprises a detection module, a switch module and a first resistance network,the first input end of the detection module is connected with the data end of the three-wire SPI; the second input end of the detection module is connected with the input end of the four-wire SPI; the output end of the detection module is connected with the first end of the switch module; the second end of the switch module is connected with the power supply, the third end of the switch module isconnected with the input end of the four-wire SPI, and the fourth end of the switch module is connected with the first end of the first resistance network; the other end of the first resistance network is respectively connected with the data end of the three-wire SPI and the output end of the four-wire SPI; the detection module is used for outputting a first control signal under the condition that it is determined that the voltage of the data end of the three-wire SPI and the voltage of the input end of the four-wire SPI do not meet a preset matching condition, and the switch module is used for being in an off state according to the first control signal. And the output end of the four-line SPI can accurately read data from the data end of the three-line SPI.

Description

technical field [0001] The present application relates to the display field, and in particular to a conversion circuit, a control method for the conversion circuit, and a display device. Background technique [0002] The front-end controller can perform data transmission with a driving integrated circuit chip (Integrated Circuit Chip, IC) of the driven module. The control signal generated by the front-end controller is transmitted to the driver IC, and then the driver IC realizes the driving of the driven module through the control signal. Wherein, the driven module may be a display module. The front-end controller can also read related data from the driver IC. [0003] But in some scenarios, the driver IC only supports 3-wire SPI (Serial Peripheral Interface, SPI), and the front-end controller supports 4-wire SPI. In this scenario, if the front-end controller and the driver IC perform data transmission, the output and input terminals of the signal 4-wire SPI need to be c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/00
CPCG09G5/006
Inventor 陈列华黄正园王香春丁晓源
Owner SHANGHAI AVIC OPTOELECTRONICS
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