Boots – shoes – and leggings
Patent
1986-02-07
1988-06-07
Lall, Parshotam S.
Boots, shoes, and leggings
340345, G06K 1500, H04L 1100
Patent
active
047501375
ABSTRACT:
A method and a computer program for performing the method are disclosed for optimizing signals being exchanged between a host unit and an addressable-buffer peripheral device. The program optimizes an outgoing signal from the host unit by (1) creating an updated-state map representing the state of the peripheral device buffer expected to exist after processing by the peripheral device of the outgoing signal, (2) performing an exclusive-or (XOR) operation using the updated-state map and a present-state map representing the existing state of the buffer, and (3) constructing and transmitting a substitute outgoing signal which represents only changes to the buffer, and in which all premodified field flags are turned off. Position-dependent characters, such as attribute bytes, are translated into nondata characters prior to incorporation into a map, and are retranslated into their original form for use in the substitute signal.
REFERENCES:
patent: 4587633 (1986-05-01), Wang et al.
patent: 4620289 (1986-10-01), Chauvel
Nagel et al., "Programmable Communications Subsystem Having . . . ", from IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, pp. 2633-2645.
Harper Carol R.
Harper Thomas A.
BMC Software Inc.
Lall Parshotam S.
Mattson Brian M.
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