Browse Prior Art Database

Compressing Trash on the Fly

IP.com Disclosure Number: IPCOM000117823D
Original Publication Date: 1996-Jun-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 88K

Publishing Venue

IBM

Related People

Haynes, T: AUTHOR [+3]

Abstract

Many times computer users delete data or programs to generate more free disk space, therefore, allowing additional data to be stored. The deleted data is moved to a buffer area or renamed on many of today's operating systems. This buffer area and file renaming scheme gives the user the ability to restore the data but does not give the user any extra space on the media to store additional data. The proposed invention will mitigate this problem.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Compressing Trash on the Fly

      Many times computer users delete data or programs to generate
more free disk space, therefore, allowing additional data to be
stored.  The deleted data is moved to a buffer area or renamed on
many of today's operating systems.  This buffer area and file
renaming scheme gives the user the ability to restore the data but
does not give the user any extra space on the media to store
additional data.  The proposed invention will mitigate this problem.

      Many computer systems have holding areas where data is stored
after being 'deleted'.  Due to these holding areas, the data is not
really deleted but it appears so to the user of the system.  What
normally happens is that a pointer to the data is moved from the data
structure which contains pointers to all current data and placed in a
different data structure which holds pointers to data which was
'deleted' from the system.  Another way that the deletion can be
carried out is to rename files and not list these renamed files with
others.  An example of this would be to replace the first letter of
every file with a $.  These systems allow the user to bring the
information back so that it can be listed with other current data if
the 'deletion' is deemed as a mistake.

      Computer hard disk drives have limited storage capacity.
Generally, as hard disk capacity increases, so too does the size of
programs and data files which are stored on these drives.  The
characteristics of these devices cause users to spend their time
trying to find old things that can be removed to make room on the
device for new data and programs.  With operating systems that use a
buffer area for deleted files, the user has to enter the buffer area
and erase the information off the media.  Now the user has generated
free disk space.  How can more free space be generated when the user
deletes files which are sent to a buffer on the same medium, without
the user having to erase the files that get stored in the buffer
area?

      Most of these systems use a medium which stores a limited
amount of data.  The space that is available for data storage is not
increased when the user 'deletes' data because the action really just
moves a pointer.  This invention will give the user of systems that
store data the abili...