Display Device Image Capture Module Bandwidth Adaptation
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Solution Overview
Problem
The integration of camera functions with display devices often results in hardware implementation issues due to insufficient transmission bandwidth, leading to inoperability during login procedures, as seen in applications like Windows Hello, where the image capture module cannot transmit image data within a predetermined time due to bandwidth constraints.
Innovation Solution
A display device and controlling method that adjust the image capture module's resolution based on the available data transmission bandwidth, switching to a lower resolution during login procedures and higher resolution after login, ensuring data transmission completes within the allotted time and preventing communication errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image capture module transmits high-resolution image data during login procedure, then the image quality is improved, but the transmission bandwidth is insufficient causing the application to be inoperable
Solution Approach 1:
The patent applies dynamics by making the image capture module's resolution dynamic rather than static. The module automatically adjusts its resolution based on the operational context: using high resolution during normal operation and low resolution during login procedures. This dynamic adaptation resolves the contradiction by allowing the system to have both high image quality capability and reliable login functionality.
Solution Approach 2:
The patent changes the resolution parameter of the image capture module based on different operational states. During login procedures, the resolution parameter is changed to a lower value to reduce bandwidth requirements and ensure successful authentication. During normal operation, the parameter is changed back to high resolution to maintain image quality. This parameter adjustment strategy resolves the technical contradiction.
2Measurement precision
If the image capture module uses high resolution during login procedure, then the image data detail is improved, but the transmission time exceeds the predetermined time causing handshake protocol failure
Solution Approach 1:
The system dynamically adjusts the image capture module's resolution based on the operational phase. During the time-critical login procedure, the resolution is reduced to ensure fast transmission within the predetermined time limit. After login completion, the resolution returns to high for detailed image requirements. This temporal dynamic adjustment resolves the time-quality contradiction.
Solution Approach 2:
The system performs preliminary action by detecting the login state before image transmission begins. When login is detected, the system proactively reduces the resolution to prepare for fast transmission. This preliminary resolution adjustment ensures that the subsequent image transmission will complete within the required time frame, preventing handshake protocol failures.
3Measurement precision
If the image capture module transmits full-resolution image data continuously, then the image quality is maintained, but the data transmission bandwidth is insufficient for all applications
Solution Approach 1:
The patent makes the image capture module dynamic by enabling it to switch between high and low resolution modes based on application requirements. During login procedures and other bandwidth-constrained operations, the module operates in low-resolution mode to ensure compatibility. During normal operations, it switches to high-resolution mode to maintain image quality. This dynamic behavior provides adaptability across different applications.
Solution Approach 2:
The image capture module achieves multi-functionality by serving different resolution requirements of various applications. It can function as a high-resolution camera for normal operations and as a low-resolution camera for login procedures and bandwidth-constrained applications. This universal capability allows the single module to support diverse application scenarios effectively.
Data Source
AI summary
A display device and controlling method thereof are provided. The display device includes a connecting port, an image capture module, and a data exchange module. The image capture module is configured to generate image data, and the data exchange module has a data transmission bandwidth. The controlling method comprises following steps of: generating image data with a first resolution by the image capture module when the computer host is electrically connected to the connecting port and executes a login procedure; and generating the image data with a second resolution by the image capture module when the computer host ends the login procedure; wherein the first resolution is lower than the second resolution.