Patent ID: 6658058
Filing Date: 2003-12-02
Classification: H04N

Abstract:
A picture coding apparatus composing a terminal apparatus in which data including picture data is transmitted and received, comprising:differential motion information threshold value determining means for setting a threshold value, which gives a value range to differential motion information, according to a quality condition of a given line, and outputting the threshold value; and picture data coding means for performing a motion compensation processing for input picture data and reproduced picture data obtained by performing a coding processing and a decoding processing for preceding picture data precedent to the input picture data to obtain motion information, calculating a difference between the motion information and preceding motion information obtained in a preceding motion compensation processing precedent to the motion compensation processing as the differential motion information, producing a renewed differential motion information by setting a limit to the differential motion information according to the threshold value set by the differential motion information threshold value determining means in cases where the differential motion information is beyond the value range given by the threshold value, coding the input picture data and outputting compressed picture data.