Alternating Display Zone Scanning for 3D Motion Blur Reduction

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Solution Overview

Problem

Electronic devices such as smartphones and tablets face challenges in providing split-screen 3D content without generating artifacts like motion blur and luminance offsets, especially when using LCD and OLED displays, due to sequential pixel row operation and liquid crystal response delays.

Innovation Solution

The implementation of display control circuitry that alternately operates pixel rows on either side of the display array's center to render and display partial frames, effectively increasing the frame rate without significant power consumption, using a 'virtual frame rate booster' method that splits the display into two zones for left and right eye content.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If sequential pixel row operation is used to display split-screen 3D content, then the display can show separate images for left and right eyes, but motion blur and luminance offsets occur due to liquid crystal response delays

Engineering Contradiction:

Improvesplit-screen 3D content display capabilityVSAvoidmotion blur and luminance offsets

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The display array is divided into two separate zones: a first zone for displaying left-eye content and a second zone for displaying right-eye content. Each zone operates independently with its own pixel row scanning, allowing simultaneous display of different images for stereoscopic viewing without the luminance offsets and motion blur that occur with sequential scanning of the entire display.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic scanning control where the display control circuitry alternates between scanning pixel rows in the first zone and pixel rows in the second zone within the same frame period. This dynamic alternating scanning enables both zones to display content simultaneously at full frame rate, eliminating the harmful artifacts while maintaining 3D display functionality.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If the frame rate is increased to reduce motion blur, then image quality improves, but power consumption increases significantly

Engineering Contradiction:

Improvemotion blur reductionVSAvoidpower consumption

Core Design Contradiction:

Object-affected harmful factorsVSUse of energy by moving object

Solution Approach 1:

By segmenting the display into two independently scanned zones, each zone can be updated at the full frame rate without requiring the entire display to scan at double the speed. This maintains high image quality with reduced motion blur while keeping power consumption at acceptable levels, as the total number of pixel updates per second remains comparable to standard frame rates.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11081069B2Data rendering and driving of electronic device displays

Publication Date: 2021.08.03 APPLE INC

AI summary

Aspects of the subject technology relate to displays for electronic devices and methods of operating the displays. The display may include an array of display pixels arranged in rows and columns. A v-drive operation in which rows are alternatingly operated about a center of each of two halves of the display is provided. Data rendering operations are provided that generate a virtual frame rate boost.