HMD Display Memory Segmentation for Image Quality
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Solution Overview
Problem
Head-mounted display devices (HMDs) face challenges in minimizing memory capacity while maintaining image quality, particularly due to the need for compensation data that increases memory size, making them bulky and heavy.
Innovation Solution
The HMD is designed with a display unit divided into high-visibility central areas and low-visibility peripheral areas, using different compensation data for each, where the central area's data is stored in units of one pixel and the peripheral area's data in units of multiple pixels, with a position determiner to differentiate and adjust data accordingly, minimizing memory capacity without compromising image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compensation data is stored for all pixels in the display unit, then image quality is maintained, but memory capacity increases making the HMD bulky and heavy
Solution Approach 1:
The display unit is divided into a first area (central region) and a second area (peripheral region). Compensation data is stored separately for each area, allowing different storage strategies to be applied to different regions. This segmentation enables the system to maintain high image quality in the central area while reducing memory capacity requirements in the peripheral area.
Solution Approach 2:
Different compensation data storage densities are applied to different regions of the display unit. The first area (central region) uses higher-density storage with compensation data for individual pixels, while the second area (peripheral region) uses lower-density storage. This local quality approach maintains image quality where users focus most of their attention while reducing overall memory requirements.
2Weight of moving object
If the HMD is made small in size and light in weight, then portability and comfort are improved, but memory capacity must be reduced which may compromise image quality
Solution Approach 1:
The display unit is divided into a first area (central region) and a second area (peripheral region). Compensation data is stored separately for each area, allowing different storage strategies to be applied to different regions. This segmentation enables the system to maintain high image quality in the central area while reducing memory capacity requirements in the peripheral area.
Solution Approach 2:
Different compensation data storage densities are applied to different regions of the display unit. The first area (central region) uses higher-density storage with compensation data for individual pixels, while the second area (peripheral region) uses lower-density storage. This local quality approach maintains image quality where users focus most of their attention while reducing overall memory requirements.
Data Source
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AI summary
A head mounted display device includes a display unit divided into at least one first area and at least one second area, a lens unit which supplies an image displayed on the display unit to a user, and a frame which fixes the display unit and the lens unit thereto. The display unit includes a memory which stores first compensation data corresponding to the first area and second compensation data corresponding to the second area, and a position determiner which determines whether first data supplied from an outside belong to the first area or the second area.