Blind-Mating Display Control Circuit Using Time-Sharing Type-C Interfaces
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Solution Overview
Problem
Conventional blind-mating displays with two interfaces require two differential pairs of configuration channels and a power management chip, resulting in a complex circuit structure and high hardware costs.
Innovation Solution
A control circuit for a blind-mating display using one differential pair of configuration channels, comprising a display control module, two Type-C interface modules, and switching switch modules, enabling time-sharing communication between the display control module and source or power delivery devices without a power management integrated chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two differential pairs of CCs and a power management chip are used to achieve bidirectional communication, then communication reliability is improved, but device complexity and hardware cost increase
Solution Approach 1:
The patent merges the functions of two separate differential pairs into a single differential pair by using switching mechanisms. The first and second switching switch modules alternately connect the display control module to the first or second Type-C interface module, combining multiple communication paths into one shared path that maintains bidirectional communication capability while reducing hardware complexity.
Solution Approach 2:
The patent introduces dynamic switching to enable a single differential pair to serve multiple communication functions. The switching switch modules dynamically reconfigure the connection between the display control module and the Type-C interface modules based on communication direction requirements, allowing one differential pair to replace what would traditionally require two static differential pairs.
2Adaptability or versatility
If two differential pairs of CCs and a power management chip are used, then bidirectional communication capability is improved, but hardware cost increases
Solution Approach 1:
The patent makes a single differential pair universal by enabling it to handle both source-to-sink and sink-to-source communication through the switching mechanism. The first switching switch module connects the display control module to the first Type-C interface module for one direction, while the second switching switch module connects to the second Type-C interface module for the reverse direction, allowing one differential pair to perform multiple communication functions.
Solution Approach 2:
The patent uses periodic switching between the two Type-C interface modules to achieve bidirectional communication. The switching switch modules alternately activate connections to different interface modules in a time-division manner, creating periodic action that enables full-duplex communication functionality from a single differential pair through sequential transmission cycles.
Data Source
AI summary
The present disclosure provides a control circuit of a blind-mating display having two Type-C interfaces, a control device thereof, and a control method thereof. The control circuit of the blind-mating display having two Type-C interfaces includes a display control module, a first Type-C interface module, a second Type-C interface module, a first switching switch module, a second switching switch module, and a dielectric module. The dielectric module is electrically connected to the first Type-C interface module, the second Type-C interface module, and the display control module. The first switching switch module is electrically connected to the first Type-C interface module, the second Type-C interface module, and the display control module. The second switching switch module is electrically connected to the first Type-C interface module, the second Type-C interface module, and the display control module. The present disclosure is alternately communicated with the source device and the PD device.