Data processing: database and file management or data structures – Database design – Data structure types
Patent
1997-08-26
2000-03-07
Black, Thomas G.
Data processing: database and file management or data structures
Database design
Data structure types
707102, 707100, G06F 1730
Patent
active
06035299&
ABSTRACT:
A four-byte data structure for representing alphanumeric or numeric house numbers (addresses) for use in a mapping system. The data structure has the same field size as that used for representing house numbers with numeric characters. One bit of the data structure is used to determine the presence of a non-numeric character in the house number. If the bit stream defined by bit positions 30-28 is either "000" or "100" or 101" or "110" or "111", then fourteen bits represent the numeric portion preceding the alphabetic character, ten bits represent the numeric portion succeeding the alphabetic character, two bits represent leading zeroes preceding any alphabetic and numeric characters and two bits represent leading zeroes disposed after an alphabetic character and before a numeric character succeeding the alphabetic character. If the bit stream defined by bit positions 30-28 is "001", then one bit identifies whether the first character of a house number is numeric or non-numeric, thirteen bits identify the alphabetic character used in a house number, ten bits represent house numbers larger than 999 or represent characters other than the alphabetic characters, ten bits represent the numeric portion of a house number and two bits represent leading zeroes.
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Schaaf David T.
White Kerry M.
Alpine Electronics Inc.
Black Thomas G.
Coby Frantz
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