Search improvements for electronic spelling machine

Details Search improvements for electronic spelling machine Search improvements for electronic spelling machine

1988-05-25

1992-05-12

Jablon, Clark A.

Boots, shoes, and leggings

364900, G06F 1540

Patent

active

051133407

ABSTRACT:
Improvements in a hand-held spelling machine increase the speed with which a query word is compared against the words in memory. One technique is to provide a look up table to encode all character sets of one or two letters into a coded string. Where the set of letters is three or more characters, a previously known algorithm is employed. Search of the memory is limited to only a few main branches of the tree. The limitation is a function of the first query word letter. The time it takes to calculate the similarity function is saved in two circumstances. When a similarity function is calculated at a particular level of the tree and found to be great enough so that there is no prune of the tree, then that decision not to prune is carried forward for other tree branches having the same letters prior to the level involved.

REFERENCES:
patent: 4490811 (1984-12-01), Yianilos et al.
patent: 4758955 (1988-07-01), Chen
patent: 4782464 (1988-11-01), Gray et al.
patent: 4830618 (1989-05-01), David

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