Apparatus for calculating a plurality of interpolation values

Details Apparatus for calculating a plurality of interpolation values Apparatus for calculating a plurality of interpolation values

1978-12-07

1980-10-28

Wise, Edward J.

Boots, shoes, and leggings

364414, 364723, 250445T, G06F 1542

Patent

active

042310970

ABSTRACT:
Apparatus for calculating a plurality of interpolation values is adapted to calculate linear interpolation values, consisting of a second data train, from a first data train and includes a memory for storing the first data train and a calculator for calculating the interpolation value from the corresponding two data in the first data train read out of the memory. The calculator comprises an n-bit register for designating those addresses of the memory where data to be read out of the upper m-bit section of the n-bit register is stored and for determining weighted factor data for calculating the interpolation value at the lower (n-m) bit section of the register, a calculating unit for calculating the interpolation value from the data read out of the memory and the weighting coefficient data, an adder for adding a position increment value for designating the adjacent interpolation value to the register each time each interpolation value is calculated at the calculating unit, and a counter stepped one count for each calculation of each interpolation value and adapted to send an end signal to a central processing unit when a predetermined number of counts are completed. The memory, register, adder and counter are controlled by the central processing unit.

REFERENCES:
patent: 3720813 (1973-03-01), Badessa
patent: 3725684 (1973-04-01), Panschow
patent: 3748447 (1973-07-01), Hajicek et al.
patent: 3840174 (1974-10-01), Craft
patent: 3905045 (1975-09-01), Nickel
patent: 4029948 (1977-06-01), Hounsfield
patent: 4044240 (1977-08-01), Cox, Jr. et al.
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patent: 4135247 (1979-01-01), Gordon et al.
patent: 4136388 (1979-01-01), Lindquist
patent: 4144570 (1979-03-01), Wagner
patent: 4149249 (1979-04-01), Pavkovich

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