LED Driver Circuit Using Counter-Based Remote Brightness Control
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Solution Overview
Problem
Conventional remote control systems for LED lighting devices require pairing of transmitters and receivers, and involve complex decoding schemes, making them costly and inconvenient for brightness adjustment.
Innovation Solution
A driver system comprising a counter unit, buffer unit, and voltage regulation unit that outputs a control voltage following a counting sequence, allowing operation state changes without pairing or decoding, using a simple circuit architecture and wireless signal filtering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional remote control systems with pairing and decoding schemes are used, then reliable control can be achieved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and removes the complex decoding and pairing functions from the receiver circuit. By using a counter unit that directly responds to infrared signals without requiring decoding, the system eliminates the need for programmed control units and complex demodulation functions, thereby reducing circuit complexity while maintaining control reliability
Solution Approach 2:
The patent uses a simplified approach where the counter unit directly converts received infrared signals into control outputs without creating complex decoded copies of the signals. This direct conversion method avoids the need for programmed interpretation and complex signal processing, reducing overall system complexity
2Reliability
If pairing function is implemented in remote control system, then control security is improved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the pairing function from the system by using a counter unit that responds to standard infrared signals without requiring prior pairing or authentication. This allows users to operate the device with any standard remote control that emits infrared signals, significantly improving ease of operation while maintaining sufficient control reliability through the counter's selective response to valid signal patterns
3Measurement precision
If decoding scheme is used in remote control, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces the mechanical/electronic decoding process with a counter unit that directly responds to infrared signal patterns. Instead of using programmed control units to decode and interpret signals, the counter unit inherently recognizes valid signal patterns through its counting mechanism, eliminating the need for complex decoding logic while maintaining signal recognition precision
Solution Approach 2:
The system uses direct signal-to-action mapping where the counter unit converts received infrared signals directly into control outputs without creating intermediate decoded representations. This direct conversion eliminates the need for complex decoding schemes while maintaining the ability to distinguish between different signal patterns
Data Source
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AI summary
The present invention relates to a driver system, comprising a counter unit, a buffer unit and a voltage regulation unit. The counter unit is adapted to sequentially activate one of the first output terminals upon receiving a driver signal and then output a control signal according to the driver signal. The buffer unit is adapted to output an isolated control signal upon receiving the control signal from the counter unit. Upon receiving the isolated control signal, the voltage regulation unit outputs a control voltage which corresponds to a given resistor provided therein. The control voltage is useful in driving an electronic device, and the operation of the electronic device may be further adjusted by changing the control voltage from one level to another.