LED Driving Apparatus Serial-Parallel Hybrid Control

The LED lamp string modules are divided into multiple groups, with each group containing a series-connected string of LEDs. Each group is independently controllable through individual control lines, allowing the system to maintain low current requirements within each series string while providing scalable control through parallel group management. This segmentation resolves the contradiction by organizing LEDs into modular series groups that can be selectively activated.

The patent transitions from a single-dimension serial connection to a multi-dimensional architecture where LED strings are arranged in parallel groups, each group being a series connection. This adds a parallel dimension to the control structure, allowing independent control of each series group while maintaining the current-efficient series connection within groups. The light signal control unit manages multiple control lines to address each group, enabling scalable control without increasing current requirements.

The light signal control unit is designed with multi-functionality, serving as both a control signal distributor and a voltage boosting device. It receives control signals on multiple control lines and simultaneously provides voltage boosting to ensure adequate drive voltage for each LED group. This universal design reduces the need for separate voltage boosting circuits for each parallel group, thereby reducing overall system complexity while maintaining scalability.

The patent introduces a light signal conversion subunit as an intermediary component within the light signal control unit. This subunit converts and boosts the control signals before distributing them to individual LED groups, acting as a mediator that simplifies the control architecture. By placing this intermediary at the control unit level rather than at each LED group, the patent reduces the number of separate control lines needed while maintaining independent control capability.