PICTURE DATA CODING METHOD, PICTURE DATA CODER USING THE METHOD, PICTURE DATA DECODING METHOD, PICTURE DATA DECODER USING THE METHOD, SCENE CHANGE DETECTION METHOD, SCENE CHANGE DETECTION METHOD, SCENE CHANGE DETECTOR, SCENE CHANGE RECORDER, AND PICTURE DATA SCENE CHANGE RECORDING AND REPRODUCING DEVICE

摘要

PURPOSE: To code/decode a moving picture by automatically extracting a scene change of the moving picture with respect to a coder of the moving picture or the like. ;CONSTITUTION: Moving picture data are inputted from a terminal 110a. A coding section 111 codes moving picture data in the unit of frames, A code buffer 112 stores a code quantity per one frame obtained from the coding. A detection condition setting section 114 sets a detection condition (reference value of differential coding quantity) designated by detection designation data inputted from a terminal 110b. A scene discrimination section 113 calculates a difference between a code quantity of a current frame inputted from the code buffer 112 and a code quantity of a preceding frame and activates a COS code and a select signal representing a scene change when the difference is the detection condition (reference value of differential coding quantity) or over. A switch 115 receives the select signal in which code data representing a frame of a scene change are added to the code data of the current current frame and the result is outputted externally via an output terminal 110c.;COPYRIGHT: (C)1994,JPO&Japio