| 摘要 |
PURPOSE:To prevent an omission of data to be retrieved by applying categories of similar, coincident, and anticoincident character strings while comparing a character string with a reference character string, character by character, by a character comparing device. CONSTITUTION:The reference character string and character string to be compared are stored in shift registers 5 and 6, and compared with each other, character by character, by comparators 1-4. A similarity counter 8 decides on complete coincidence when the counted value is 0 or semicoincidence when 1 when all objective characters are compared or when the cumulative value exceeds a preset value. For example, an evaluation bit 0 is added to a completely coincident character string and an evaluation bit 1 is added to a semicoincident string; and the character string of the register on the side where the compared character string is stored is stored in a memory for storing a character string after retrieval. |
