FR2726682B1 - Appareil a memoire - Google Patents

Appareil a memoire

Info

Publication number
FR2726682B1
FR2726682B1 FR9513215A FR9513215A FR2726682B1 FR 2726682 B1 FR2726682 B1 FR 2726682B1 FR 9513215 A FR9513215 A FR 9513215A FR 9513215 A FR9513215 A FR 9513215A FR 2726682 B1 FR2726682 B1 FR 2726682B1
Authority
FR
France
Prior art keywords
memory apparatus
memory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9513215A
Other languages
English (en)
Other versions
FR2726682A1 (fr
Inventor
Tatsuhiro Hosokawa
Hitomi Kaji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2726682A1 publication Critical patent/FR2726682A1/fr
Application granted granted Critical
Publication of FR2726682B1 publication Critical patent/FR2726682B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1416—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights
    • G06F12/1425—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
FR9513215A 1994-11-08 1995-11-08 Appareil a memoire Expired - Fee Related FR2726682B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27366194 1994-11-08

Publications (2)

Publication Number Publication Date
FR2726682A1 FR2726682A1 (fr) 1996-05-10
FR2726682B1 true FR2726682B1 (fr) 1997-08-08

Family

ID=17530796

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9513215A Expired - Fee Related FR2726682B1 (fr) 1994-11-08 1995-11-08 Appareil a memoire

Country Status (3)

Country Link
US (1) US5638316A (fr)
DE (1) DE19541675A1 (fr)
FR (1) FR2726682B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11213683A (ja) * 1998-01-20 1999-08-06 Mitsubishi Electric Corp メモリ駆動装置
US7539828B2 (en) * 2000-08-08 2009-05-26 Faronics Corporation Method and system for automatically preserving persistent storage
US7137893B2 (en) * 2001-05-09 2006-11-21 Wms Gaming Inc. Method and apparatus for write protecting a gaming storage medium
US6549468B2 (en) * 2001-08-30 2003-04-15 Micron Technology, Inc. Non-volatile memory with address descrambling

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130946A (en) * 1986-02-28 1992-07-14 Canon Kabushiki Kaisha Protection of data in a memory in electronic equipment
JPH02272646A (ja) * 1989-04-14 1990-11-07 Nec Ibaraki Ltd トレーサー
JPH02302997A (ja) * 1989-05-17 1990-12-14 Nec Corp 誤書込みを防止したｐｒｏｍ
JPH0476749A (ja) * 1990-07-19 1992-03-11 Toshiba Corp セキュリティ回路
JPH05217361A (ja) * 1992-02-05 1993-08-27 Hitachi Maxell Ltd メモリカード
JPH0695971A (ja) * 1992-07-30 1994-04-08 Rohm Co Ltd データ保存回路

Also Published As

Publication number Publication date
US5638316A (en) 1997-06-10
FR2726682A1 (fr) 1996-05-10
DE19541675A1 (de) 1996-05-09

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Legal Events

Date Code Title Description
ST Notification of lapse