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)

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Abstract

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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

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KABUSHIKI KAISHA TOSHIBATOKYO39845

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iijima, Yasuo Yokohama, JP 63 1746

Cited Art Landscape

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 133 1989
4,983,816 Portable electronic device 29 1989
4,985,615 Portable electronic apparatus having key data for limiting memory access 74 1989
 
LUCENT TECHNOLOGIES INC. (1)
4,816,653 Security file system for a portable data carrier 151 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 124 1986

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SANDISK TECHNOLOGIES INC. (25)
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 8 2005
7,480,766 Interfacing systems operating through a logical address space and on a direct data file basis 20 2005
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8,291,151 Enhanced host interface 0 2005
7,793,068 Dual mode access for non-volatile storage devices 3 2005
7,769,978 Method and system for accessing non-volatile storage devices 4 2005
7,747,837 Method and system for accessing non-volatile storage devices 7 2005
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7,581,057 Memory system with management of memory blocks that directly store data files 2 2006
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7,949,845 Indexing of file data in reprogrammable non-volatile memories that directly store data files 0 2006
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7,558,906 Methods of managing blocks in nonvolatile memory 3 2006
7,552,271 Nonvolatile memory with block management 37 2006
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7,590,794 Data operations in flash memories utilizing direct data file storage 1 2006
7,590,795 Flash memory systems utilizing direct data file storage 2 2006
7,562,181 Flash memory systems with direct data file storage utilizing data consolidation and garbage collection 4 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
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KABUSHIKI KAISHA TOSHIBA (7)
5,644,750 Data storage apparatus having memory area with a predetermined logic type 10 1994
5,581,708 Data transmission system using electronic apparatus having a plurality of transmission protocols 77 1994
5,437,028 File management system with file-size flexibility 20 1994
5,515,532 File management system for memory card 22 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 15 1997
 
FUJITSU LIMITED (2)
5,548,757 Method and apparatus for appending information to data files, ensuring proper end-of-file indication 6 1995
6,168,078 Card reader 2 1998
 
NXP B.V. (2)
8,341,361 Method for storing data as well as a transponder, a read/write-device, a computer readable medium including a program element and such a program element adapted to perform this method 0 2007
8,688,929 Method for storing data as well as a transponder, a read/write-device, a computer readable medium including a program element and such a program element adapted to perform this method 0 2012
 
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)
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,594,889 Memory resource allocation look ahead system and method 17 1995
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,652,864 Concurrent storage allocations or returns without need to lock free storage chain 15 1994
 
NEC CORPORATION (1)
6,115,800 Method for managing received radio data 1 1997
 
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (1)
7,024,532 File management method, and memory card and terminal apparatus that make use of the method 1 2002
 
PITNEY BOWES INC. (1)
5,339,411 Method for managing allocation of memory space 96 1993
 
THALES (1)
7,568,065 Method for carrying out writing updating and allocating memory on a memory medium 7 2004