Boots – shoes – and leggings
Patent
1997-01-29
1999-03-23
Sheikh, Ayaz R.
Boots, shoes, and leggings
G06F 102
Patent
active
058869115
ABSTRACT:
The present invention relates to a fast calculation method and, more particularly, to a fast calculation method and its hardware apparatus using a linear interpolation operation. Primarily, the two existing values of the two given points X and Y intended to proceed the linear interpolation operation are stored in two registers A and B respectively, and then they are added through an adder and the lowest order bit of the sum is discarded to form a mean value. The resulting value discarded from the lowest order bit is then sent to a multiplexer and every bit in the binary representation of the position pointer K is sent to a selection input terminal of the multiplexer in sequence from the highest order bit to the lowest order bit. The resulting value discarded from the lowest order bit is sent back to either one of the two registers A and B in accordance with the digit of the corresponding bit in the binary representation of the position pointer K. The process described above will be repeated several times until the lowest order bit in the binary representation of the position pointer K is sent and finally, the interpolation value of the target point I is one of the resulting values discarded from the lowest order bit stored in the two registers A and B with the least error.
REFERENCES:
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patent: 3748447 (1973-07-01), Hajicek et al.
patent: 3969615 (1976-07-01), Bowers et al.
patent: 4558422 (1985-12-01), DenBeste et al.
patent: 4581698 (1986-04-01), Jaswa
patent: 5020014 (1991-05-01), Miller et al.
Omar Omar A.
Sheikh Ayaz R.
Winbond Electronics Corp.
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