Display System USB Type-C Channel Separation
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Solution Overview
Problem
Conventional display apparatuses cannot access data from a portable device's storage medium when both a personal computer and the portable device are used as image sources simultaneously, limiting user experience.
Innovation Solution
A display apparatus with a USB Type-C connector, multiplexing circuit, switch circuit, and display controller that separates image-transmission and data-transmission channels, allowing the portable device to act as a host in the image channel and a device in the data channel, enabling the host to recognize and access the portable device's storage medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional display apparatus connects to multiple devices as image sources simultaneously, then the display apparatus can receive images from multiple devices, but the personal computer cannot access data in the storage medium of the portable device
Solution Approach 1:
The patent segments the USB signal into separate image-transmission channel and data-transmission channel using a multiplexing circuit. This allows independent handling of image data and data access requests, enabling the host to access portable device storage while simultaneously receiving image input from the portable device through the same USB Type-C connector.
Solution Approach 2:
The USB Type-C connector is configured to perform multiple functions simultaneously: it serves as both an image source interface and a data access interface. The display apparatus can receive images from the portable device while also allowing the host to access the portable device's storage medium through the same physical connector.
2Adaptability or versatility
If the portable device acts as a host terminal in the image-transmission channel, then the portable device can transmit images to the display apparatus, but the host cannot access the portable device's storage medium
Solution Approach 1:
The multiplexing circuit separates the USB signal into distinct image-transmission channel and data-transmission channel. This segmentation allows the portable device to maintain host terminal status for image transmission while the host computer can simultaneously access the portable device's storage medium through the data-transmission channel, as the two functions operate independently through separate signal paths.
Data Source
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AI summary
A display apparatus is provided, which includes a USB Type-C connector, display panel, a multiplexing circuit, a switch circuit, and a display controller. The USB Type-C connector is connected to a portable device, wherein a USB signal between the display apparatus and the portable device includes an image-transmission channel and a data-transmission channel. The multiplexing circuit separates the image-transmission channel from the data-transmission channel. The display controller controls a display mode of the display panel. In response to the display panel being in a first display mode, the display controller transmits a control signal to the switch circuit to control the multiplexing circuit to switch to a first operation mode. In response to the multiplexing circuit being in the first operation mode, the portable device acts as a host terminal in the image-transmission channel, and acts as a device terminal in the data-transmission channel.