LED Control Circuit Ground Wire Signal Transmission
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Solution Overview
Problem
The existing LED control circuits require complex circuit configurations and high hardware costs due to the need for a reference circuit to provide a reference voltage for signal recognition.
Innovation Solution
The proposed LED control circuit eliminates the need for a reference circuit by using a level recognition circuit that outputs a digital signal based on the voltage difference between the power terminal and the grounding terminal, simplifying the circuit configuration and reducing hardware costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference circuit is used to provide reference voltage for signal recognition, then the LED control circuit can accurately recognize control signals, but the circuit configuration becomes complex and hardware cost increases
Solution Approach 1:
The patent extracts and eliminates the reference circuit from the LED control circuit. Instead of using a separate reference voltage source, the invention uses the ground wire to transmit control signals directly to the LED control circuit, which recognizes the control signals by detecting voltage differences relative to its own ground potential. This extraction of the reference circuit simplifies the overall circuit configuration while maintaining signal recognition capability through the ground wire transmission path.
2Measurement precision
If a reference circuit is used to provide reference voltage for signal recognition, then the LED control circuit can accurately recognize control signals, but hardware cost increases
Solution Approach 1:
The invention removes the reference circuit component from the system, thereby reducing hardware cost. The control signals are transmitted through the ground wire, and the LED control circuit uses its internal ground reference to detect and recognize these signals. This eliminates the need for additional reference voltage generation hardware, reducing component count and manufacturing cost while preserving signal recognition functionality.
3Measurement precision
If signal wires are used to transmit control instructions to LED control circuit, then control accuracy is high, but the number of signal lines increases and system complexity increases
Solution Approach 1:
The ground wire, which traditionally serves only as a reference potential path, is assigned an additional function of transmitting control signals. The LED control circuit recognizes control instructions by detecting voltage differences on the ground wire relative to its internal ground reference. This multi-functional use of the ground wire eliminates the need for separate signal transmission wires, reducing the number of signal lines and simplifying the overall system while maintaining control accuracy.
Data Source
AI summary
An LED control circuit and an electronic device, and an electronic apparatus. The LED control circuit includes a power terminal, a grounding terminal, and a plurality of control signal outputs, and a level recognition circuit outputs a digital signal according to a voltage difference between a voltage at the power terminal and a voltage at the grounding terminal. a decoding circuit parses the digital signal to obtain control data of the LED control circuit, and output a plurality of control signals to a plurality of control signal outputs according to the control data. Thus, a reference circuit for providing the reference voltage is omitted, a circuit configuration is simplified and a hardware cost is reduced.