Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
249 words
A motion vector detection apparatus comprising: delay means for receiving first picture data and for outputting a particular detection range of picture data; block comparison means (9, 10, 11, 12) for receiving both second picture data with a particular time difference from said first picture data and picture data from said delay means and for detecting a difference between picture data from said delay means and second picture data for each block of P x Q picture elements; and determination means for determining a degree of matching of a picture of an output signal from the block comparison means (9, 10, 11, 12); wherein said delay means comprises scanning conversion means for converting input picture data from conventional horizontal scanning into scanning within said block, and a plurality of shift registers for receiving said first picture data with a delay of one frame, the plurality of shift registers being arranged such that both a first block of P x Q picture elements which are earlier than a particular reference tap of the plurality of shift registers and a second block which deviates by i picture elements horizontally and by j picture elements vertically from said first block are set, and such that when said first block does not deviate from said second block, a tap with a delay which is equal to the difference between each picture element of said second block and the reference tap is selected (1), said second picture data being obtained from said selected tap.
Claim 2
Dependent Claim
195 words
A motion vector detection apparatus comprising: delay means for receiving first picture data and for outputting a particular detection range of picture data; block comparison means (9, 10, 11, 12) for receiving both second picture data with a particular time difference from said first picture data and picture data from said delay means and for detecting a difference between picture data from said delay means and second picture data for each block with P x Q picture elements; and determination means for determining a degree of matching of a picture of an output signal from the block comparison means (9, 10, 11, 12); wherein said determination means comprises means (31) for receiving remainders from said block comparison means and for detecting a minimum value thereof, means (32, 33) for allocating vectors which are physically adjacent to the detected minimum vector, for calculating the correlation with a reference wave, and for generating an output of a value in accordance with the correlation, and means (34, 35, 36) for detecting the minimum vector from the output of said correlation calculation as a motion vector or for determining that a motion contour portion is present in a block.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 or claim 2, wherein said particular time difference is one field or one frame.
Claim 4
Dependent Claim
84 words
A band compression apparatus providing a combination of motion compensation and an inter-frame encoding scheme, the apparatus comprising: means (41, 42) for generating a difference between input picture data and picture data with a time difference of one frame; means (44) for detecting a degree of matching of each of plural blocks of comparison points and thereby detecting a motion vector with the highest degree of matching; and means (46, 51) for selecting and encoding the difference in accordance with said detected motion vector.
Claim 5
Dependent Claim
93 words
A band compression apparatus providing a combination of motion compensation and an inter-frame encoding scheme, the apparatus comprising: delay means (41) for generating input picture data of the current frame and that of the preceding frame; means (42) for forming a difference between said current frame and picture data of a plurality of preceding frames which have been encoded in accordance with an orthogonal conversion scheme; and means for detecting a position which has the highest effect of data compression from said differences and for selectively outputting the difference of the detected position.