Method and system for storing variable length records in the mem

Details Method and system for storing variable length records in the mem Method and system for storing variable length records in the mem

1996-12-18

1999-01-26

Black, Thomas B.

Data processing: database and file management or data structures

Database design

Data structure types

707202, 711 2, 711110, 711173, 379387, G06F 1206

Patent

active

058648615

ABSTRACT:
A portable radio telephone apparatus and including a first memory and a second memory for storing variable length records and validity confirmation indicators, indicating confirmed or unconfirmed validity, associated with each record, and memory defragmentation for identifying a first record in the first memory which is adjacent an available memory fragment; providing a second record in the second memory which is a duplicate of the first record having its validity confirmation indicator set to unconfirmed validity; setting the validity confirmation indicator of the second record to confirmed validity; setting the validity confirmation indicator of the first record to unconfirmed validity; providing a third record in the first memory at the location of said available memory fragment having its validity confirmation indicator set to unconfirmed validity; setting the validity confirmation indicator of the third record to confirmed validity; and setting the validity confirmation indicator of the second record to unconfirmed validity.

REFERENCES:
patent: 3678462 (1972-07-01), Condon et al.
patent: 5163082 (1992-11-01), Karnowski
patent: 5182769 (1993-01-01), Yamaguchi et al.
patent: 5349697 (1994-09-01), Pelkonen
patent: 5542042 (1996-07-01), Manson
patent: 5548751 (1996-08-01), Ryu et al.
patent: 5625819 (1997-04-01), Hoffer, Jr. et al.
Thesen et al., "Predicting the availability of contiguous memory", International Journal of Computer & Information Sciences, vol. 6, No. 4, Abstract only, 1977.

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