Multi-purpose band LED user interface design
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Solution Overview
Problem
User interfaces for multi-purpose devices are limited in conveying complex information due to the fragility and high cost of LCDs, while LED-based interfaces are insufficient for detailed data presentation.
Innovation Solution
A user interface utilizing two concentric shapes of LEDs or other light sources, capable of displaying various information such as progress, status, and time, with color-coded LEDs to provide fine-grained data, and a central image for state indication, which can be configured for different states like active, sleeping, or clock display, and optimized for power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If LCD is used for user interface, then information display capability is improved, but device fragility increases and cost increases
Solution Approach 1:
The patent uses LED lights to create visual representations (copies) of information rather than displaying actual text or images on an LCD screen. The LED patterns, colors, and arrangements serve as symbolic copies of data, conveying information through light patterns rather than direct visual display.
Solution Approach 2:
The patent replaces fragile, expensive LCD components with durable, inexpensive LED elements. LEDs are more robust against physical damage and have longer operational lifetimes, sacrificing some information density for significantly improved reliability and reduced cost.
2Reliability
If LED-based interface is used, then device reliability is improved and cost is reduced, but information display capability deteriorates
Solution Approach 1:
The patent divides information display into multiple independent LED segments arranged in concentric patterns. Each LED or group of LEDs can independently represent different data points, allowing complex information to be conveyed through combinations of segmented light elements rather than requiring a continuous display surface.
Solution Approach 2:
The patent assigns different functional properties to different regions of the LED array. Inner concentric LEDs may display different types of information than outer LEDs, and different colors or activation patterns convey different meanings. This local differentiation maximizes the information capacity of each individual LED element.
3Loss of information
If more LEDs are used to display detailed information, then information display capability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent arranges LEDs in nested concentric circular patterns, with inner circles containing fewer LEDs and outer circles containing more. This nested structure allows the system to display different levels of information detail by activating only the necessary concentric layers, reducing the effective number of LEDs needed for any given information state.
Solution Approach 2:
The patent employs sequential or periodic activation of LED patterns to convey information over time. Rather than all LEDs being active simultaneously, the system uses time-multiplexed display sequences where different LED patterns are activated in succession, reducing peak power consumption and simplifying control logic.
4Loss of information
If color-coded LEDs are used to provide fine-grained data, then information display capability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent uses different LED colors (red, green, blue, yellow, etc.) to encode different types of information or different states of data. Each color can represent a specific category or status, allowing the system to convey multiple dimensions of information using the same physical LED elements by changing their color state rather than requiring separate LEDs for each data type.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the effective and efficient display of complex information on a user-worn device using a limited number of LEDs, providing detailed data in a visually attractive and power-efficient manner, suitable for various states and configurations.
Implementation Method 1
the user interface includes two concentric shapes of LEDs, and a central image or display
Data Source
AI summary
A method and apparatus to provide a user interface for a multi-purpose band is described. The user interface includes two shapes, in one embodiment, each shape made up of a plurality of LEDs or other light sources. Multiple types of information may be provided to the user through the lights, including activity statistics, sleep statistics, and current time.