Content addressable memory unit, point cloud range search circuit and method

The invention provides a content addressable memory unit, a point cloud range searching circuit and a point cloud range searching method, which can be applied to a laser radar point cloud signal processing chip. The point cloud range searching circuit mainly aims at the range searching step in the point cloud processing flow, can be applied to the processing of feature extraction, noise reduction, compression, registration and the like of the point cloud, and is a key part of automatic driving and robots. According to the method, storage and search integration of the point cloud data is supported through the customized circuit based on the content addressable memory unit, and higher efficiency and lower energy consumption are realized. 本发明提供一种内容寻址存储器单元、点云范围搜索电路及方法，可以被应用于激光雷达点云信号处理芯片。本发明的点云范围搜索电路主要针对点云处理流程中的范围搜索步骤，可以被应用于点云的特征提取、降噪、压缩、配准等处理中，是自动驾驶、机器人的关键部分。本发明通过定制的基于内容寻址存储器单元的电路来支持点云数据的存储和搜索一体化，实现更高的效率和更低的能耗。