Abstract: Three Dimensional Panorama is a virtual reality technology that uses the panoramic images to represent virtual environments,also called virtual Reality panorama.This technique restores the space information of the scene by reverse projection of the panorama to the surface of the geometric body.Based on the patent database of CPRS and DWPI,the patent applications of the 3D panoramic image display technology are retrieved.The statistical analysis has been made on the amount of patent applications,the distribution of patent applications,the important applicants and the rela-ted core patents in this field,and the typical technical schemes of various technical branches are enumerated ,which provide some reference for the development of the technology in this field.

Key words: International patent classification, Patent analysis, Patent map, Three dimensional panorama