Integrated LED Controller for Mobile Camera Power and Signal
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Solution Overview
Problem
Existing mobile phone camera systems with integrated LEDs lack efficient control mechanisms for operating power, temperature management, and electrostatic discharge protection, limiting the functionality and reliability of LEDs for assisting camera operations.
Innovation Solution
A light emitting diode module with a controller that receives operating power through connectors, determines commands carried by the power, and controls the LEDs' operation, including temperature sensing and electrostatic discharge protection, allowing for adjustable current distribution and signaling via resistance changes, enabling functions like video assist and flash lighting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If LED control is integrated into the LED module without additional connectors, then device complexity is reduced, but control functionality and reliability are limited
Solution Approach 1:
The patent integrates the controller directly into the LED module, merging the control function with the LED driving function. The controller is positioned adjacent to the LED chip and shares the same packaging structure, eliminating the need for separate control modules and additional connectors. This integration reduces device complexity while maintaining control reliability through close proximity control.
Solution Approach 2:
The power supply connectors serve dual functions: providing operating power to the LED and transmitting control signals to the controller. By making the connectors universal for both power and control purposes, the patent reduces the number of connectors needed while ensuring reliable control functionality through the same electrical interface.
2Device complexity
If control signals are transmitted through power supply lines, then additional pins or connectors are eliminated, but signal interference may occur
Solution Approach 1:
The patent introduces an isolated controller that acts as an intermediary between the power supply lines and the LED driving circuitry. The controller receives control signals through the power supply connectors, processes them with electrical isolation, and generates appropriate driving signals for the LED. This intermediary structure eliminates direct signal transmission through power lines, reducing interference while maintaining the benefit of using fewer pins.
Solution Approach 2:
The patent replaces direct electrical signal transmission through power supply lines with a controller-based processing system. Instead of transmitting control signals directly over the power connectors, the controller interprets power line variations and converts them into proper control signals, substituting a mechanical/electrical direct connection with a smarter control system that reduces interference.
3Device complexity
If multiple LEDs are controlled with a single controller, then device complexity is reduced, but current distribution precision is limited
Solution Approach 1:
The patent divides the LED array into multiple groups, with each group having dedicated control capability through the single integrated controller. The controller can selectively activate and independently control different LED groups by adjusting current distribution to each group. This segmentation approach allows a single controller to manage multiple LEDs with sufficient precision for practical applications while maintaining reduced device complexity.
Solution Approach 2:
The patent implements current control that can provide different current levels to different LED groups, using partial control action. The controller adjusts current distribution dynamically, providing precise control to active LED groups while keeping other groups inactive or at lower current levels, achieving adequate precision without requiring separate controllers for each LED.
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
The solution provides reliable and adjustable LED operation for camera assistance, preventing overheating and protecting against electrostatic discharges, while allowing for versatile lighting modes without additional pins or connectors, enhancing the LED module's performance and adaptability.
Implementation Method 1
a light emitting diode module comprising one or more light emitting diodes each comprising a light emitting circuitry
Implementation Method 2
The controller may be further comprise a temperature sensor inside the housing and configured to provide the controller with signals
Data Source
AI summary
An apparatus has a light emitting diode module that has one or more light emitting diodes each with a light emitting circuitry. The apparatus further has a controller functionally connected with the one or more light emitting circuitries; a housing surrounding the controller and the one or more light emitting circuitries; and a pair of power supply connectors extending outside of the housing and functionally connected with the controller. The controller receives operating power from the pair of power supply connectors and uses the received operating power to control operation of the one or more light emitting circuitries.