Display Interface Lane Switching for Low-Power Secure Input Changes
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Solution Overview
Problem
Existing image display apparatuses face significant power consumption issues due to the need for repeated encryption authentication when switching between external input devices, which also slows down the external input switching process.
Innovation Solution
An interface device that selectively activates only some lanes for data transmission, generates update time information based on received data, and maintains encryption authentication, allowing for reduced power consumption and rapid external input switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption authentication is performed repeatedly when switching between external input devices, then security is maintained, but power consumption increases and switching speed decreases
Solution Approach 1:
The system performs encryption authentication in advance when an external device is first connected, then maintains the authentication state without repeated authentication processes when switching between inputs. This preliminary action eliminates the need for continuous re-authentication, thereby reducing power consumption while maintaining security.
Solution Approach 2:
The interface device dynamically adjusts its operation mode based on the connection state. When multiple devices are connected, the system maintains authentication status actively; when switching occurs, it leverages the maintained state to avoid repeated authentication. This dynamic adaptation resolves the contradiction between maintaining security and reducing power consumption.
2Reliability
If encryption authentication is performed repeatedly when switching between external input devices, then security is maintained, but switching speed decreases
Solution Approach 1:
By performing encryption authentication in advance and maintaining the authentication state, the system eliminates the time-consuming re-authentication process during input switching. This allows rapid switching between external devices while security is preserved through the maintained authentication state.
Solution Approach 2:
The system maintains continuous authentication status across device switches rather than interrupting for repeated authentication. This continuity enables fast switching while preserving security, as the authentication action remains valid and active throughout the switching process.
3Measurement precision
If all lanes are activated for data transmission, then higher resolution data can be transmitted, but power consumption increases
Solution Approach 1:
The interface device segments the data transmission lanes and activates only the necessary number of lanes based on the current resolution requirement. Instead of keeping all lanes active continuously, the system divides the transmission capacity and allocates resources dynamically, reducing power consumption while maintaining required data transmission quality.
Solution Approach 2:
The system changes the operational parameters of the transmission lanes by adjusting the number of active lanes according to the current resolution needs. When high resolution is required, more lanes are activated; when lower resolution suffices, fewer lanes remain active. This parameter adjustment resolves the contradiction between transmission quality and power consumption.
Data Source
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AI summary
An interface device and an image display apparatus including the same are disclosed. The image display apparatus according to an embodiment of the present disclosure comprises: a display; an interface including at least one port and to receive a video signal from an external electronic device connected to the port; and a signal processing device to display an image corresponding to the video signal received from the interface on the display, wherein in a first mode of a first transmission mode, the interface is configured to turn on some lane and turn off other lanes, generate update time information of an image frame based on data received through the some lane, and maintain encryption authentication based on the update time information. Accordingly, power consumption may be reduced while maintaining encryption authentication.