Hybrid LCD Electronic Paper Display API Synchronization

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Solution Overview

Problem

Conventional LCD displays suffer from poor readability under bright light conditions and are not well-suited for flexible display applications due to their high refresh rates, which are not compatible with bistable, low-frequency electronic paper displays, limiting their ability to display high frame rate content effectively.

Innovation Solution

The development of systems that enable communication between electronic devices to forward display information between a first and second electronic device using application programming interfaces, allowing for the synchronization and display of intended displays across different devices, including those with high and low frame rates, using various communication channels such as APIs, callbacks, and shared memory.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If LCD displays with high refresh rates are used, then visual experience during rapid screen switching and scrolling is improved, but readability under bright light conditions deteriorates

Engineering Contradiction:

Improveframe rateVSAvoidreadability under bright light

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent combines LCD and EPD display technologies into a single hybrid display system. The LCD layer provides high refresh rate for smooth transitions, while the EPD layer provides reflective visibility under bright light. Both display layers are optically combined so that users experience the benefits of both technologies simultaneously without needing separate devices.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The hybrid display system serves multiple functions: it operates as a high refresh rate LCD for dynamic content and rapid scrolling, and as a reflective EPD for readable display under bright light conditions. The display controller manages both modes, making the single display device universally adaptable to different viewing conditions and content types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If EPD displays are used, then readability under any lighting condition including direct sunlight is improved, but frame rate deteriorates

Engineering Contradiction:

Improvereadability under direct sunlightVSAvoidframe rate

Core Design Contradiction:

Object-affected harmful factorsVSSpeed

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display controller implements periodic updating of the EPD layer at lower refresh rates while maintaining high refresh rates for the LCD layer. This periodic action allows the EPD to update content only when necessary, preserving its low power consumption and high readability benefits while the LCD handles continuous high-speed updates for smooth scrolling and animation.

Inventive Principle:

Principle #19Periodic action

3Ease of operation

If conventional operating system window managers are used, then management of multiple LCD task windows is improved, but compatibility with multiple BILF and REHF displays deteriorates

Engineering Contradiction:

Improvewindow managementVSAvoiddisplay type compatibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The window manager is designed to be universally compatible with multiple display types including both BILF and REHF displays. It can manage windows across heterogeneous display technologies, allocating tasks appropriately based on display characteristics such as refresh rate and resolution, thereby maintaining ease of operation while achieving broad adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The window manager dynamically adapts its behavior based on the characteristics of connected displays. It can adjust window rendering strategies, refresh rates, and resource allocation in real-time depending on whether a display is BILF or REHF, enabling flexible management of multiple task windows across different display technologies without requiring separate management systems.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUSRE48911E1Application programming interface for providing native and non-native display utility

Publication Date: 2022.02.01 QUICKBIZ HLDG

AI summary

Systems are presented including: a first electronic device operative to receive a first input, the first electronic device including: a first data communication unit operative to connect the first electronic device to a second electronic device; and a first processing unit operative to process the first input to generate information representing at least a portion of a first intended display, and operative to establish at least one communication channel between the first and second electronic devices using the first data communication unit operative and to call at least one application programming interface to forward the information representing the at least the portion of the first intended display to the second electronic device for display, and further operative to receive and process a representation of a second input from the second electronic device.