LED Light Strip Circuit with Parallel Control Lines
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Solution Overview
Problem
Existing light strip technologies require multiple wires and circuitry for control, making them costly and inefficient, especially for larger numbers of light points, as each aspect of control needs separate control lines and a common ground return, limiting the ability to individually control LED lights in complex modes.
Innovation Solution
A light set circuit using only a few control signal lines, where at least three LED light sources are connected between control signal lines, allowing each light source to be individually turned on, and a control apparatus with a processor and memory to generate flashing modes, reducing the need for additional wires by using reverse polarity connections and floating states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate control lines are used for each LED light source, then individual control capability is improved, but device complexity and cost increase
Solution Approach 1:
Multiple control functions are merged into a single control line by utilizing bidirectional signaling. The control line can carry different voltage levels to indicate different control commands, allowing the system to control multiple LED light sources individually without requiring separate control lines for each LED.
Solution Approach 2:
The control line is designed to perform multiple functions: it can control different LED light sources at different times, and can convey different control commands through different voltage levels. This multi-functionality reduces the total number of control lines needed while maintaining individual control capability.
2Adaptability or versatility
If more control terminals are provided on the control chip, then individual LED control is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple control terminals into fewer terminals by implementing bidirectional control logic. A single control terminal can sequentially control multiple LED light sources by changing voltage levels and timing, reducing the number of terminals needed on the control chip and thereby lowering manufacturing cost.
Solution Approach 2:
The control system utilizes changes in voltage levels and timing parameters on fewer control terminals to achieve individual LED control. By varying these parameters, the system can selectively activate different LED light sources without requiring additional physical terminals.
3Device complexity
If common ground return lines are used, then circuit simplicity is improved, but control precision is reduced
Solution Approach 1:
The patent extracts the ground return function from the control signal path by using dedicated power and ground connections for each LED light source. This separation allows control signals to be transmitted without interference from ground current, improving control precision while maintaining circuit simplicity through the use of fewer control lines.
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 efficient and cost-effective control of multiple LED light sources with fewer control lines, allowing for various flashing modes and visual effects without the need for additional common ground lines, thus reducing complexity and cost.
Implementation Method 1
at least three LED light sources that being variously directly connected between the control signal lines
Data Source
AI summary
An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively. Further variations include display devices having rotating and slit patterns of illumination.