Method for retrieving compressed data from a memory storing a lo

Details Method for retrieving compressed data from a memory storing a lo Method for retrieving compressed data from a memory storing a lo

1989-05-16

1992-03-31

Lee, Thomas C.

Boots, shoes, and leggings

3642368, 3642564, 3642598, 3642606, 36492912, 3649472, 3649513, 364DIG2, G06F 700, G06F 1204

Patent

active

051014874

ABSTRACT:
A method for storing a k-bit output value for each of a plurality of m-bit input values in a memory having an n-bit word stored at each of 2.sup.n n-bit addresses, wherein m, n and k are positive integers, m>n>k and m-n.gtoreq.k, the method comprising the steps of storing a first k-bit output value corresponding to a first m-bit input value at a first n-bit address in the memory, and storing the 2n-m most significant bits of the first n-bit address at a second n-bit address, the stored 2n-m most significant bits of the first n-bit address occupying the 2n-m most significant bits at the second n-bit address, the first and second n-bit addresses being selected such that the n most significant bits of the first m-bit input value correspond to the n bits making up the second n-bit address and the m-n least significant bits of the first m-bit input value correspond to the m-n least significant bits making up the first n-bit address.

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patent: 4409479 (1983-10-01), Sprague
patent: 4521772 (1985-06-01), Lyon
patent: 4691199 (1987-09-01), Shell
patent: 4926314 (1990-05-01), Dhuey

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