USB communication circuit, display device and electronic device
By designing USB communication circuits in commercial display devices, and using access detection modules and channel switching modules to realize channel switching of USB interfaces, the problems of circuit complexity and cost increase caused by expansion of IO chips in the prior art are solved, and the effects of circuit simplification, reliability improvement and cost reduction are achieved.
CN222672322UActive Publication Date: 2025-03-25GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1
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Patent Information
- Application Number
- CN202421499372.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
Technical Problem
When existing commercial display devices realize channel switching, they need to add extended IO chips, resulting in complex circuit structure and increased costs.
Method used
A USB communication circuit is designed, including an access detection module and a channel switching module. The access detection unit detects the access control host and outputs a channel selection signal to the channel switching module to realize the channel switching of the USB interface following the display interface.
Benefits of technology
It has achieved simplification of the circuit structure, improved reliability, reduced circuit costs, and expanded the scope of application.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a USB communication circuit, a display device and an electronic device, the circuit comprises an access detection module and a channel switching module, the input end of the channel switching module is connected with a USB interface, and the output end of the channel switching module is connected with at least two display control hosts. The access detection module comprises access detection units which are correspondingly connected with at least two display control hosts, and the output end of each access detection unit is connected with the control end of the channel switching module; each access detection unit is used for outputting a corresponding channel selection signal to the channel switching module when detecting that the corresponding display control host is accessed, and the channel switching module is used for gating a communication link between the USB equipment and the target display control host according to the channel selection signal; the target display control host is a currently accessed display control host corresponding to the channel selection signal. The circuit is simple in structure, high in reliability, low in circuit cost and wide in application range.
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