Abstract: Prior to a coding of a picture information, an information related to the coding in frame unit, an information of the coding mode in macro block unit, an information of the motion vector in macro block unit and an information related to the complexity of picture in macro block unit are produced in a coding unit 2 and stored in an external memory 5. An information of the code apportionment is produced on the basis of these information stored in the external memory 5 and the code is apportioned on the basis of the latter information by a code apportioning unit 6 and the latter information is stored in the external memory 5. A coding of the picture information is performed by using the information related to the coding in frame unit, the information of the coding mode in macro block unit, the information of the motion vector in macro block unit and the information related to the complexity of picture in macro block unit stored in an external memory 5 and an appropriate code apportionment is performed.

Abstract: A decision is made as to which of a first segment and a second segment of an input picture signal more correlates to a third segment of the input picture signal. The third signal segment is of interest. The first signal segment precedes the third signal segment by a 2-field interval or a 4-field interval. The second signal segment follows the third signal segment by a 2-field interval or a 4-field interval. Calculation is made as to a difference between the third signal segment and the more-correlating signal segment for every pixel related to the input picture signal. Every 1-pixel-corresponding portion of the third signal segment and every 1-pixel-corresponding portion of the more-correlating signal segment are mixed into a 1-pixel-corresponding portion of a filtering-resultant picture signal at a mixing ratio depending on the calculated difference.

Abstract: A progressive coding system wherein a moving picture signal is separated into a low frequency component of a little luminance variation and a high frequency component of much luminance variation, and the components are respectively coded by motion compensated predictive coding. The high frequency component is motion-compensated according to a motion quantity of the low frequency component. The motion quantity is modified by a sampling ratio of the moving picture signal and low frequency component. The motion quantity can be detected based on the low frequency component in a present frame and those subjected to intraframe coding in previous and subsequent intraframes to the present frame. A predictve low frequency component is then obtained by motion compensation using the motion quantity according to time intervals of the low frequency components between the frames. A predictive high frequency component is also obtained like the predictive low frequency component referring to the time interval.

Abstract: A motion compensated predictive coding/decoding system of a picture signal in which one frame is constituted by N.times.M pixels. The picture signal is divided into a plurality of block data each have BH.times.BV pixels. The plurality of the block data are coded/decoded with motion compensated prediction by processors, the number of which provided in horizontal and vertical directions being K and L respectively. The plurality of the block data to be coded/decoded are supplied to the processors. On the other hand, data of a former frame stored in K.times.a.times.L.times.b memories, each covering N/K/a.times.M/L/b pixels. By a bus adapter, connection between the processors and memories is switched in accordance with a block position in the frame to be processed so that the processors can access the memories that store the data required for the motion compensated prediction. Any of the memories is not connected simultaneously to a plurality of the processors.

Abstract: A motion data image compression system comprises a first element to divide an I'th frame (I=1, 2, . . . N-1) between the two frames F.sub.O and F.sub.N out of N frames (where N is an integer of 2 or more) of digital motion image data, into a block B.sub.I formed of a plural number of pixels, and to determine the motion vector MVOI of frames F.sub.O and F.sub.I for each of the divided blocks B.sub.I and to determine the block B.sub.O that uses the motion vector MVOI to predict the block B.sub.I, a second element to determine the motion vector MVNI between frame F.sub.N and F.sub.I for each block B.sub.I and that uses the motion vector MVNI to determine the block B.sub.N that predicts the block B.sub.I, a third element that determines the motion vectors MVON and MVNO of frame F.sub.N and F.sub.O for each block B.sub.I, and uses the motion vectors MVON and MVNO to determine the predictive motion vector MVOI' between frame F.sub.O and F.sub.I, determine the block B.sub.O, that predicts the block B.sub.

Abstract: In this motion detection circuit, in detecting motion vectors by using a block of L.times.M pixels as a unit between images An and Bn of respective hierarchies in which predetermined sampling operations are implemented to an input image A and a comparative image B at n-stages in both horizontal and vertical directions, motion vectors of adjacent blocks of motion vectors detected at the (i-1) stage are taken into consideration as an initial value of motion vector detection at the i-th stage. This detection circuit further comprises a circuit for providing the initial value by using image data at the (i-1)-th stage corresponding to motion vectors of the adjacent blocks.

Abstract: A motion picture data coding/decoding system comprises a motion vector coding unit for detecting a motion vector between input and reference images at every block of several pixels by correlative operation, and a motion vector decoding unit for decoding the motion vector.

Abstract: A movement compensation predictive coding method including: a first step of detecting a movement vector MV.sub.M between the N-th frame (N.gtoreq.0) and the (N+M)-th frame (M.gtoreq.2), the vector MV.sub.M being assumed as an initial value of a difference movement vector MVe, and to detect a movement vector MVi between the (N+1)-th frame (i=0, 1, 2, . . .