Patent ID: 9479781
Filing Date: 2016-10-25
CPC Classification: H04N

Claim Text:
1. A motion video encoding apparatus for encoding each picture contained in motion video data by dividing the picture into a plurality of blocks, the motion video encoding apparatus comprising: a group determining unit which determines, for each block, a group to which the block belongs, among a plurality of groups into which the picture is divided; a group decode time information computing unit which computes a decode time for each group; a code amount control unit which controls, for each group, an amount of code resulting from entropy encoding of data of each block contained in the group so that data needed for decoding all of the blocks contained in the group will arrive at a stream receive buffer provided in a motion video decoding apparatus by the decode time of the group computed by the group decode time information computing unit when the data is transmitted to the motion video decoding apparatus at a prescribed transmission rate; a compression unit which compresses the data of each block based on the amount of code of the block; an entropy encoding unit which entropy-encodes the data of each block compressed by the compression unit and accumulates a number of bits in the data to be output; and a decode information appending unit which appends, to data to be output, correction information for the decode time of each group which corresponds to a maximum value of a delay for each group due to the entropy encoding by the entropy encoding unit and group information indicative of the group to which each block belongs, the correction information including the decode time of each group and an amount of correction of the decode time which corresponds to the maximum value of the delay of each group and is obtained by dividing a maximum number of bits in the data to be output by the prescribed transmission rate.