Head-Mounted Display Offloading Video Processing to External Devices

Solution Overview

Problem

Head-mounted display devices experience delayed and deteriorated display quality when processing large volumes of video streams, leading to viewer discomfort due to high display loads.

Innovation Solution

A head-mounted display device with a processor that determines if the display load exceeds a preset threshold, selects external devices to offload processing, and transmits video stream information for calculation, thereby reducing the load and maintaining or improving display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the head-mounted display device processes a large volume of video streams to display lifelike frames with wide view-angles, then the display quality is improved, but the display frames are delayed and the display quality deteriorates

Engineering Contradiction:

Improvedisplay qualityVSAvoiddisplay frame delay

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent segments the video processing workload by dividing frames into multiple regions (e.g., foveal region and peripheral regions) and processing different regions with different levels of detail. This allows the system to prioritize processing of critical regions while reducing processing of less critical regions, thereby maintaining display quality for important areas while reducing overall processing time and frame delay.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by rendering different regions of the display with different levels of detail and quality. The foveal region (central vision area) is processed with high quality and detail, while peripheral regions are processed with lower quality and detail. This approach maintains perceived display quality where the viewer's attention is focused while reducing the computational burden on less critical areas, thus reducing frame delay.

Inventive Principle:

Principle #3Local quality

2Manufacturing precision

If the head-mounted display device processes a large volume of video streams to maintain display quality, then the display quality is improved, but the processing time increases and frame rates decrease

Engineering Contradiction:

Improvedisplay qualityVSAvoidframe rate

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent segments the video processing workload by dividing frames into multiple regions (e.g., foveal region and peripheral regions) and processing different regions with different levels of detail. This allows the system to prioritize processing of critical regions while reducing processing of less critical regions, thereby maintaining display quality for important areas while reducing overall processing time and frame delay.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent dynamically changes processing parameters such as resolution, detail level, and processing intensity based on the specific region being processed and the current system load conditions. By adjusting these parameters adaptively, the system can maintain high display quality where needed while reducing processing requirements in other areas, thus improving overall frame rate.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If the head-mounted display device processes a large volume of video streams to ensure high display quality, then the display quality is improved, but the system load increases and causes viewer discomfort

Engineering Contradiction:

Improvedisplay qualityVSAvoidsystem load

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the video processing workload by dividing frames into multiple regions (e.g., foveal region and peripheral regions) and processing different regions with different levels of detail. This allows the system to prioritize processing of critical regions while reducing processing of less critical regions, thereby maintaining display quality for important areas while reducing overall processing time and frame delay.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by rendering different regions of the display with different levels of detail and quality. The foveal region (central vision area) is processed with high quality and detail, while peripheral regions are processed with lower quality and detail. This approach maintains perceived display quality where the viewer's attention is focused while reducing the computational burden on less critical areas, thus reducing frame delay.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11598963B2Head-mounted display device and frame displaying method using the same

Publication Date: 2023.03.07 ACER INC

AI summary

A head-mounted display device including a processor and a display is provided. The processor is configured to: determine whether a display load of the head-mounted display device is higher than a preset load; when the display load is higher than the preset load, select at least one external device capable of making the display load lower than the preset load from a plurality of external devices; and, transmit a to-be-calculated information to at least one external device. The display is configured to: display a calculated information received from the at least one external device.