Motion detection circuit

Claim 2

A motion detecting apparatus according to claim 1, wherein said time is set in such a fashion that pixels within said search range corresponding to pixels within said block can always be input to said processing means regardless of any corresponding state of the pixels within said search range and the pixels of said reference data block.

Claim 3

A motion detecting apparatus according to claim 2, wherein the pixels within said search range and the pixels within said reference data block are compared not depending on the basis of said corresponding state but depending on the basis of the sequential order of said time.

Claim 4

A motion detecting apparatus according to claim 1, 2 or 3 wherein the pixels within said reference data block are pixels of a present field and the pixels within said search range are one field or more preceding or one field or more succeeding pixels.

Claim 5

A motion detecting apparatus in which pixels within a search range formed of pixels of a predetermined number and pixels within a reference data block formed of pixels of a number smaller than said predetermined pixel number are compared on the basis of the arrangement state thereof to thereby detect the motion state of pixels within said search range, comprising: an input unit to which pixels within said search range are input in a predetermined order; a calculating circuit for calculating a difference absolute value between the pixels within said search range and the corresponding pixels within said reference data block; and detecting means for detecting said motion state on the basis of calculated result, wherein said calculating circuit calculates a difference absolute value between pixels within said block and the corresponding pixels within said search range at every corresponding state of pixels which can be treated by said block within said search range and the calculation is carried out in parallel to each said corresponding state in accordance with said sequential order.

Claim 6

A motion detecting apparatus according to claim 5, wherein said detecting means calculates a sum of difference absolute value output from said calculating circuit.

Claim 7

A motion detecting apparatus according to claim 6, wherein said sums of every corresponding states are compared to detect a minimum value to thereby detect a motion vector on the basis of said minimum value.

Claim 8

A motion detecting apparatus in which when pixels within a search range formed of a predetermined number of pixels and pixels within a reference data block the pixel number of which is smaller than said predetermined number of pixels are compared on the basis of the arrangement state thereof, there is provided processing means for processing sums of difference absolute values of pixels within said reference data block and corresponding pixels within said search range at every corresponding state of pixels of said block within said search range, and in which each of the pixels within said search range is input to said processing means at a predetermined input cycle and pixels within said search range are input to said processing means on the basis of said cycle to thereby sequentially process said difference absolute value sum between corresponding pixels within said reference data block and pixels within said reference data block, characterized in that when a motion of less than one pixel is detected within said search range, a mean value between adjacent pixels and the pixel within said block are compared, said difference absolute value is obtained at every corresponding state with respect to the pixels within said block and a common processing between said corresponding states is carried out with a priority.

Claim 9

A motion detecting apparatus comprising: first processing means for processing sums of difference absolute values of pixels within a first reference data block formed by pixels of the number smaller than said predetermined pixel number and corresponding pixels within a search range at every corresponding state of pixels of said block within said search range when when pixels within a search range formed by pixels of a predetermined number and pixels of said first reference data block are compared on the basis of the arrangement state; and second processing means for comparing a mean value of adjacent pixels and pixels within a second reference data block when a motion of less than one pixel within said search range is detected to thereby obtain a difference absolute value sum at every corresponding state with respect to the pixels within said second reference data block, wherein the number of pixels of said second reference data block is smaller than that of pixels within said first reference data block.