Pulse Width Counter Circuit for Edge-Triggered LED Lighting Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LED lighting systems with multiple channels for flickering effects are complex, costly, and difficult to manufacture, resulting in monotonous lighting effects due to the lack of varied pulse width signal processing.
Innovation Solution
A computing apparatus triggered by an edge of a supply-line signal with a pulse width counter, which counts the pulse width of the supply-line signal to set a circuit status and perform computations, enabling more dynamic lighting effects by distinguishing between high and low pulse widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED lights are divided into several groups controlled by controllers for each group to achieve flickering mode, then lighting effects are improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single LED string to perform multiple lighting modes (steady, flickering, water flowing) through signal processing within the existing two-channel structure. The computing apparatus processes supply-line signal edges to generate multiple output signals that control different LED groups, allowing one system to serve multiple lighting functions without requiring separate controllers for each mode.
Solution Approach 2:
The patent merges the functions of multiple controllers into a single computing apparatus that processes supply-line signal edges. Instead of having separate controllers for each LED group, the invention combines control logic into one apparatus that generates multiple output signals from a single input signal, thereby reducing the number of control components while maintaining diverse lighting effects.
2Adaptability or versatility
If more channels of LED light are used to improve lighting effects, then lighting effects are improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by enabling a fixed two-channel LED string structure to produce dynamic multi-channel lighting effects through signal processing. The computing apparatus dynamically generates multiple output signals from supply-line signal edges, allowing the system to simulate multi-channel behavior without physically expanding the channel structure. This dynamic signal generation creates the effect of more channels while maintaining the simplicity of the original two-channel hardware.
3Adaptability or versatility
If LED flashing bulbs are installed in series at intervals to work in fixed mode, then flickering mode is achieved, but adaptability decreases
Solution Approach 1:
The patent extracts the control function from separate LED flashing bulbs and consolidates it into a computing apparatus within the driver circuit. Instead of relying on discrete flashing bulbs installed in series, the invention extracts the flickering control logic into an integrated computing apparatus that processes supply-line signals and generates appropriate control signals for LED groups, thereby eliminating the need for additional discrete components.
4Speed
If computing is triggered by edge of supply-line signal without pulse width counting, then response speed is improved, but measurement precision decreases
Solution Approach 1:
The patent applies preliminary action by counting the pulse width of supply-line signal edges before triggering the computing operation. The pulse width counter measures the duration of the signal edge in advance, and this measured value is then used to determine the appropriate response time or control parameter for the computing apparatus. This preliminary measurement ensures that the subsequent computing operation has precise timing information while maintaining fast response through edge-triggered operation.
Data Source
AI summary
A computing apparatus triggered by an edge of a supply-line signal with a pulse width counter includes: a clock circuit to supply clock signals to a pulse width counter from an output port of said clock circuit; said pulse width counter triggered by said clock signals to count the pulse width of a supply-line signal from a power supply line, to set a circuit status of said computing apparatus in accordance with said pulse width, and to output said circuit status to an edge-triggered computing unit; and the edge-triggered computing unit to do computing triggered by an edge of a supply-line signal, and to output computing result as the output of said computing apparatus in accordance with said circuit status. The circuit status of the computing apparatus is set in accordance with pulse width counter of supply-line signals.