Patent ID: 6393204
Filing Date: 2002-05-21
Classification: H04N

Abstract:
A digital motion picture decoding apparatus comprising an input buffer memory for storing coded data to be decoded, a reproduced picture memory for storing the decoded picture data to be displayed, and a display picture deciding means for deciding from the picture data stored in the reproduced picture memory a reproduced picture to be output, said decoding apparatus further comprising:a program changing means for changing the type of the coded data to be decoded by changing between different programs; a program change detecting means for detecting from the output of the program changing means that the type of the coded data to be decoded is changed in order to detect the changing between different programs; and a display state maintaining means for controlling the picture data output from the reproduced picture memory so as to maintain the display state of the reproduced picture of one frame being currently displayed according to the decision of the display picture deciding means, when it is detected from the output of the program change detecting means that the change of the type of the coded data to be decoded makes the coded data not continuous in time sequence, wherein a display of the images of incorrectly reproduced video data due to a decoding error is prevented.