Using mask operand obtained from composite operand to perform lo

Details Using mask operand obtained from composite operand to perform lo Using mask operand obtained from composite operand to perform lo

1992-12-18

1997-07-22

Lall, Parshotam S.

Boots, shoes, and leggings

395800, 395565, 364DIG1, 36473601, G06F 9308, G06F 732

Patent

active

056511213

ABSTRACT:
A mask operand can be obtained using a composite operand. A composite operand is an operand with plural multi-bit component data items. A logic operation can be performed on the mask operand and the composite operand to select a subset of components. The mask operand can have one value, such as ON, in bit positions aligned with the subset of components and another value, such as OFF, in all other bit positions. Other operations can then be performed on the selected components. A mask operand and its inverse can be used to merge two other operands, such as by selecting the maximum or minimum of each pair of aligned components in the operands. A mask operand can be obtained from flag bits at an end of each component in a composite operand, by selecting the flag bits and propagating them across the components. A mask operand can also be obtained from flag bits at the least significant bit position by an arithmetic operation. Mask obtaining instructions and mask using instructions can be included in a software product. The mask operands can be used to filter an image to select pixels above a threshold, equal to a constant, or within a range; to compare or combine two images; to perform multiplication, division, or threshold convolution; or, more generally, to perform any image processing operation involving data driven branching.

REFERENCES:
patent: 4139899 (1979-02-01), Tulpule et al.
patent: 4180861 (1979-12-01), Armstrong et al.
patent: 4592005 (1986-05-01), Kregness
patent: 4775952 (1988-10-01), Danielsson et al.
patent: 4785393 (1988-11-01), Chu et al.
patent: 4841438 (1989-06-01), Yoshida et al.
patent: 4864529 (1989-09-01), Shah et al.
patent: 4953119 (1990-08-01), Wong et al.
patent: 5034900 (1991-07-01), Kimura et al.
patent: 5048109 (1991-09-01), Bloomberg et al.
patent: 5056041 (1991-10-01), Guttag et al.
patent: 5060280 (1991-10-01), Mita et al.
patent: 5065437 (1991-11-01), Bloomberg
patent: 5129066 (1992-07-01), Schmookler
patent: 5129092 (1992-07-01), Wilson
patent: 5131049 (1992-07-01), Bloomberg et al.
patent: 5214763 (1993-05-01), Blaner et al.
patent: 5267051 (1993-11-01), Dellert et al.
patent: 5280547 (1994-01-01), Mahoney
patent: 5315699 (1994-05-01), Imai et al.
patent: 5327543 (1994-07-01), Miura et al.
patent: 5375080 (1994-12-01), Davies
patent: 5408670 (1995-04-01), Davies
patent: 5428804 (1995-06-01), Davies
patent: 5437045 (1995-07-01), Davies
patent: 5450603 (1995-09-01), Davies
patent: 5450604 (1995-09-01), Davies
Short, "Microprocessors and Programmed Logic", Prentice-Hall 1987, pp. 228-229.

Affiliated with

Also associated with

Rating

Using mask operand obtained from composite operand to perform lo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Using mask operand obtained from composite operand to perform lo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using mask operand obtained from composite operand to perform lo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1565842