LED drive cascade circuit

• Main Authors: ZHANG XIANCHENG, ZHOU XING'AN
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2019
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The utility model provides an LED drive cascade circuit. The LED drive cascade circuit comprises a channel setting circuit, a data decoding circuit A, a data decoding circuit B, a data path selectioncircuit, a data register circuit, an output drive circuit and the like. The cascading method comprises the mutual connection relation of the LED drive circuits in application and the corresponding data structure disclosed by the utility model. Wherein the data structure comprises a reset code, a start code, a parameter and gray scale data. The LED drive circuit is provided with an AI data input end and a BI data input end, the data decoder A and the data decoder B respectively judge whether AI input data and BI input data are normal or not and output AC signals and BC signals to the channel setting circuit, and the channel setting circuit sets control signals SEA according to the AC signal state and the BC signal state. The data path selection circuit sends the data of the normal channel to the data register under