Patent ID: 8442119
Filing Date: 2013-05-14
Classification: H04N

Abstract:
1. A decoding apparatus that decodes moving image data using an intra-slice refreshing, comprising: a processor, the processor configured to execute a process including: recognizing restore points in the moving image data where an intra-slice refreshing cycle starts, from header information of the moving image data; selecting an intra-macroblock line of each frame of the moving image data, from a plurality of macroblock lines in each frame of the moving image data, the intra-macroblock line being one of the plurality of macroblock lines and intra-slice being applied; identifying a refreshed area of each frame of the moving image data, the refreshed area being an area of macroblock lines which became the intra-macroblock line between a latest intra-slice starting point and each frame of the moving image data; detecting whether a decoding error occurs; judging, when a decoding error occurs, whether a place where the decoding error occurs is within the refreshed area; and determining a restore point for updating the moving image data to be an intra-slice starting point at a shortest timing when the place is outside the refreshed area, and determining the restore point to be a next intra-slice starting point after the intra-slice starting point at the shortest timing when the place is within the refreshed area.