Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11C—STATIC STORES
  • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
  • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
  • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
  • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L23/00—Details of semiconductor or other solid state devices
  • H01L23/57—Protection from inspection, reverse engineering or tampering
  • H01L23/576—Protection from inspection, reverse engineering or tampering using active circuits
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
  • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
  • G06F21/86—Secure or tamper-resistant housings
  • G06F21/87—Secure or tamper-resistant housings by means of encapsulation, e.g. for integrated circuits
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11C—STATIC STORES
  • G11C16/00—Erasable programmable read-only memories
  • G11C16/02—Erasable programmable read-only memories electrically programmable
  • G11C16/06—Auxiliary circuits, e.g. for writing into memory
  • G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11C—STATIC STORES
  • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
  • G11C7/24—Memory cell safety or protection circuits, e.g. arrangements for preventing inadvertent reading or writing; Status cells; Test cells
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11C—STATIC STORES
  • G11C8/00—Arrangements for selecting an address in a digital store
  • G11C8/20—Address safety or protection circuits, i.e. arrangements for preventing unauthorized or accidental access
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
  • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
  • G06F2221/2143—Clearing memory, e.g. to prevent the data from being stolen
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/0001—Technical content checked by a classifier
  • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S257/00—Active solid-state devices, e.g. transistors, solid-state diodes
  • Y10S257/922—Active solid-state devices, e.g. transistors, solid-state diodes with means to prevent inspection of or tampering with an integrated circuit, e.g. "smart card", anti-tamper

Landscapes

• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Computer Security & Cryptography (AREA)
• General Physics & Mathematics (AREA)
• Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Software Systems (AREA)
• General Engineering & Computer Science (AREA)
• Condensed Matter Physics & Semiconductors (AREA)
• Power Engineering (AREA)
• Storage Device Security (AREA)
• Semiconductor Integrated Circuits (AREA)
• Read Only Memory (AREA)
• Semiconductor Memories (AREA)
• Testing Or Measuring Of Semiconductors Or The Like (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=24371525

Family Applications (1)

Country Status (13)

Families Citing this family (43)

Family Cites Families (7)

• 1990
  • 1990-10-04 US US07/592,650 patent/US5053992A/en not_active Expired - Lifetime
• 1991
  • 1991-09-23 AT AT91308623T patent/ATE139351T1/de not_active IP Right Cessation
  • 1991-09-23 DE DE69120190T patent/DE69120190T2/de not_active Expired - Fee Related
  • 1991-09-23 ES ES91308623T patent/ES2087975T3/es not_active Expired - Lifetime
  • 1991-09-23 DK DK91308623.7T patent/DK0479461T3/da active
  • 1991-09-23 EP EP91308623A patent/EP0479461B1/en not_active Expired - Lifetime
  • 1991-09-26 CA CA002052302A patent/CA2052302C/en not_active Expired - Fee Related
  • 1991-09-27 IE IE339891A patent/IE62799B1/en not_active IP Right Cessation
  • 1991-09-30 AU AU84854/91A patent/AU635441B2/en not_active Ceased
  • 1991-10-01 KR KR1019910017183A patent/KR100252563B1/ko not_active IP Right Cessation
  • 1991-10-01 NO NO913844A patent/NO303476B1/no unknown
  • 1991-10-03 JP JP3256630A patent/JPH04258892A/ja active Pending
• 1996
  • 1996-07-23 GR GR960401965T patent/GR3020606T3/el unknown

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