HMD Update Buffer for Zero-Delay Rendering

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In virtual and augmented reality systems, head-mounted display devices experience delays in image updates due to the lag in processing and rendering, leading to user discomfort and virtual reality sickness.

Innovation Solution

Implementing an update buffer at the HMD device to store high-resolution image data for both the current and outside views, allowing for local retrieval and processing of image updates, thereby reducing delay times and improving user experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If image data is processed and rendered through external source devices, then comprehensive image updates can be provided, but image update delays occur causing user discomfort

Engineering Contradiction:

Improveimage update timelinessVSAvoidimage update delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system pre-renders multiple potential view images (current view, left view, right view, and intermediate views) and stores them in the update buffer before they are needed. When head movement is detected, the appropriate pre-rendered image is immediately retrieved and displayed, eliminating the need for real-time rendering during head movement and achieving zero-delay updates.

Inventive Principle:

Principle #10Preliminary action

2Speed

If high-resolution image data is stored for all possible views, then immediate updates are possible, but memory requirements increase

Engineering Contradiction:

Improveimage update speedVSAvoidmemory storage requirement

Core Design Contradiction:

SpeedVSQuantity of substance

Solution Approach 1:

The system stores high-resolution pre-rendered images only for specific discrete views (current, left, right, and intermediate views) rather than all possible continuous views. This selective storage approach provides sufficient image quality for predicted head movement directions while significantly reducing memory requirements compared to storing all possible views.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9542718B2Head mounted display update buffer

Publication Date: 2017.01.10 INTEL CORP

AI summary

Techniques related to providing updates in a head mounted display (HMD) device are described herein. A HMD may be configured to display a view of an environment. An update buffer of the HMD device may be included to store image data. The image data may include image data for a current view of the environment and image data of the environment that is outside of the current view.