US Patent No: 5,226,155

Number of patents in Portfolio can not be more than 2000

Method and system for allocating file space in memory of IC card

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

In a memory area of a data memory in an IC card, data file definition data for defining a data file is stored from one end of the memory area, and a data file is defined from the other end of the memory area. Area definition data for defining an area in a data file is stored from one end of a data file, and an area is defined from the other end of the data file.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KABUSHIKI KAISHA TOSHIBATOKYO36116

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iijima, Yasuo Yokohama, JP 59 1636

Cited Art

Patent Info (Count) # Cites Year
 
KABUSHIKI KAISHA TOSHIBA (4)
4,949,240 Data storage system having circuitry for dividing received data into sequential wards each stored in storage region identified by chain data 43 1988
4,887,234 Portable electronic device with plural memory areas 129 1989
4,983,816 Portable electronic device 27 1989
4,985,615 Portable electronic apparatus having key data for limiting memory access 66 1989
 
LUCENT TECHNOLOGIES INC. (1)
4,816,653 Security file system for a portable data carrier 145 1986
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
4,992,651 IC card and method of recording data therein 18 1988
 
TOPPAN MOORE CO., LTD. (1)
4,829,169 IC card having state marker for record access 116 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SANDISK TECHNOLOGIES INC. (24)
7,877,539 Direct data file storage in flash memories 3 2005
7,627,733 Method and system for dual mode access for storage devices 6 2005
7,480,766 Interfacing systems operating through a logical address space and on a direct data file basis 6 2005
7,814,262 Memory system storing transformed units of data in fixed sized storage blocks 0 2005
7,529,905 Method of storing transformed units of data in a memory system having fixed sized storage blocks 27 2005
7,877,540 Logically-addressed file storage methods 1 2005
8,291,151 Enhanced host interface 0 2005
7,793,068 Dual mode access for non-volatile storage devices 1 2005
7,769,978 Method and system for accessing non-volatile storage devices 2 2005
8,055,832 Management of memory blocks that directly store data files 0 2006
7,581,057 Memory system with management of memory blocks that directly store data files 2 2006
7,558,905 Reclaiming data storage capacity in flash memory systems 0 2006
7,450,420 Reclaiming data storage capacity in flash memories 26 2006
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7,669,003 Reprogrammable non-volatile memory systems with indexing of directly stored data files 2 2006
7,558,906 Methods of managing blocks in nonvolatile memory 2 2006
7,552,271 Nonvolatile memory with block management 21 2006
7,610,437 Data consolidation and garbage collection in direct data file storage memories 0 2006
7,590,794 Data operations in flash memories utilizing direct data file storage 0 2006
7,590,795 Flash memory systems utilizing direct data file storage 0 2006
7,562,181 Flash memory systems with direct data file storage utilizing data consolidation and garbage collection 2 2006
8,209,516 Method and system for dual mode access for storage devices 0 2010
7,984,233 Direct data file storage implementation techniques in flash memories 1 2010
8,214,583 Direct file data programming and deletion in flash memories 2010
 
KABUSHIKI KAISHA TOSHIBA (7)
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5,581,708 Data transmission system using electronic apparatus having a plurality of transmission protocols 76 1994
5,437,028 File management system with file-size flexibility 20 1994
5,515,532 File management system for memory card 19 1994
5,608,902 File management system for memory card 11 1994
5,748,915 Transmission method of changing protocol and data processing apparatus using this method 21 1996
5,929,428 File managing method requiring a change in key data and IC card device using the method 8 1997
 
FUJITSU LIMITED (2)
5,548,757 Method and apparatus for appending information to data files, ensuring proper end-of-file indication 4 1995
6,168,078 Card reader 2 1998
 
AUSTRIA CARD PLASTIKKARTEN UND AUSWEISSYSTEME GMBH (1)
7,480,775 Method and apparatus for block-oriented memory management provided in smart card controllers 0 2003
 
HEWLETT-PACKARD COMPANY (1)
5,414,826 System and method for memory management in microcomputer 16 1990
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,594,889 Memory resource allocation look ahead system and method 15 1995
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,024,532 File management method, and memory card and terminal apparatus that make use of the method 1 2002
 
NEC CORPORATION (1)
6,115,800 Method for managing received radio data 1 1997
 
NXP B.V. (1)
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PITNEY BOWES INC. (1)
5,339,411 Method for managing allocation of memory space 79 1993
 
SANDISK CORPORATION (1)
7,747,837 Method and system for accessing non-volatile storage devices 4 2005
 
THALES (1)
7,568,065 Method for carrying out writing updating and allocating memory on a memory medium 2 2004