This patent was asserted by Microsoft Corp. against TomTom
#94PSION'S FAMILY OF A4-SIZE MOBILE COMPUTERS LOOKS TO BE WELL WORTH THE WAIT
Applies to Claims 1
Last updated: over 3 years ago
Summary / Description
Summary / DescriptionArticle that anticipates a system that interfaces with the file allocation table system and allows flash devices to perform block erasures.
 
Basic Information
Type of Prior ArtPrint Publication
 
Publication Title *PSION'S FAMILY OF A4-SIZE MOBILE COMPUTERS LOOKS TO BE WELL WORTH THE WAIT
 
AuthorComputergram
 
ISBN
 
Page Range
 
MediumOther printed publication
 
Publication Date *September 27, 1989
 
URL
 
Notes / To Do
Notes
 
Excerpt
The flash memory is offered in access speeds from 150nS to 250nS in both 28-pin CERDIP and 32-lead plastic leaded chip carrier packages. However, the parts could not be used just like a disk without Microsoft's Flash File System. This System coexists with the standard MS-DOS File Allocation Table to enable flash devices to perform block erasures - a function that is not used in the traditional file allocation table system. Microsoft has also announced the availability of MS-DOS read only memory version 2.0, based on version 3.21 of MS-DOS. This is a significant announcement for manufacturers of portable computers because it offers: RAM economy by executing MS-DOS functions directly from ROM.
Relevance
Claims
Memory manager with file allocation table

A manager for a computer memory comprising: a block allocation routine, the memory divided into blocks of memory locations, each block having an allocation table and a data region divided into data areas, each allocation table having entries corresponding to region data areas, the block allocation routine for selecting a block in which to store data; a data area allocation routine for selecting a data area within the data region for the selected block in which to store data, for selecting an allocation table entry to correspond to the selected data area, and for setting the selected allocation table entry to correspond to the selected data area and to an allocated state; and a storage routine for storing data in the selected data area.
Relevance
Anticipates a system that interfaces with the file allocation table system and allows flash devices to perform block erasures.
Anticipates a system that interfaces with the file allocation table system and allows flash devices to perform block erasures.
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