Infrared Driver Circuit Using a Johnson Counter for Pairing-Free Control
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Solution Overview
Problem
Conventional remote control systems require complex circuit designs and pairing of transmitters and receivers, as well as decoding schemes, making them unsuitable for simple tasks like controlling lighting devices without the need for complicated coding or pairing.
Innovation Solution
A driver system utilizing a simple circuit architecture with an infrared receiver module and a Johnson counter, which outputs control signals following a predetermined counting sequence to shift the operation of electrical devices, such as lighting devices, without the need for pairing or decoding, using a voltage regulation unit and components like resistors, diodes, and 3-state buffers to generate control voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional remote control techniques (infrared, radio, Bluetooth) are used with pairing and decoding schemes, then reliable device control is achieved, but circuit complexity increases significantly
Solution Approach 1:
The patent extracts and removes the complex decoding scheme and pairing mechanisms from the remote control system. By using a Johnson counter to generate control signals directly from infrared reception without decoding, the system eliminates the programmed control unit and demodulation function, significantly simplifying the circuit while maintaining control reliability
Solution Approach 2:
The patent replaces the electronic decoding and signal processing system with a simpler optical-to-electrical conversion system. The Johnson counter circuit directly converts received infrared signals into control signals through its inherent counting sequence, substituting complex electronic decoding with a straightforward counter-based mechanism
2Reliability
If pairing between transmitter and receiver is implemented, then controlled device responds only to authorized remote control, but ease of operation deteriorates due to pairing requirements
Solution Approach 1:
The patent removes the pairing mechanism entirely from the system. The Johnson counter generates control signals based on its inherent counting sequence without requiring any pairing or authorization process, allowing any infrared remote control to operate the device immediately
Solution Approach 2:
The patent creates a universal control system where the Johnson counter responds to any infrared signal in a standardized format. The system becomes multi-functional and universally compatible with different infrared remotes, eliminating the need for device-specific pairing while maintaining operational reliability
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 remote control of electrical devices, including lighting, without the need for pairing or decoding, allowing users to arbitrarily control operation states like ON/OFF, brightness, and color temperature using any remote control unit, simplifying the control process and eliminating the complexity of conventional systems.
Implementation Method 1
the receiver unit is adapted for receiving an infrared signal
Implementation Method 2
the low-pass filter is adapted for filtering the infrared signal to generate a driving signal
Data Source
AI summary
The driver system according to the invention includes an infrared receiver module and a Johnson counter. The infrared receiver module receives an infrared signal and performs filtering using a low-pass filter to convert the infrared signal into a driving signal which is transmitted to the Johnson counter. Upon receiving the driving signal, the output terminals of the Johnson counter are sequentially activated to output a control signal for shifting the operation of an electrical device from one operation state to another.