Text comparator

Details Text comparator Text comparator

G - Physics

06

F

354/133

G06F 15/40 (1985.01)

Patent

CA 1211571

ABSTRACT A text comparator includes word logic, delimiter logic, set logic, set combination logic, proximity logic, and programming logic. Delimiter logic serves to monitor characters transferred from a mass storage device and provides discrete signals depicting whether the character is a predefined delimiter character. Word logic serves to store data regarding predefined strings of characters and provides output word signals indicating when such predefined words have been located. Set logic receives delimiter signals and word signals and provides output signals when selected words are located in the same sentence, same paragraph, etc., as desired. Set combination logic serves to combine signals from the set logic in order to generate output signals in response to more complex search strategies than can be easily detected by the set logic. Proximity logic provides output signals indicating when predefined words detected by word logic 112, or predefined set or words detected by set logic 114, or a combination of this informa- tion, occurs within a predefined proximity. Programming logic serves to receive search strategy instructions from the user and provide the proper timing, addressing, and data signals to the word logic, delimiter logic, set logic, set combination logic, and proximity logic to cause to be stored within these elements the information required to perform the desired search strategy.

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