CA2130979A1 - Protected Programmable Memory Cartridge and Computer System Using Same - Google Patents

Protected Programmable Memory Cartridge and Computer System Using Same

Info

Publication number
CA2130979A1
CA2130979A1 CA2130979A CA2130979A CA2130979A1 CA 2130979 A1 CA2130979 A1 CA 2130979A1 CA 2130979 A CA2130979 A CA 2130979A CA 2130979 A CA2130979 A CA 2130979A CA 2130979 A1 CA2130979 A1 CA 2130979A1
Authority
CA
Canada
Prior art keywords
control circuit
memory
bus
lock control
coprocessor
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.)
Granted
Application number
CA2130979A
Other languages
French (fr)
Other versions
CA2130979C (en
Inventor
James Lee Combs
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to CA002232826A priority Critical patent/CA2232826C/en
Publication of CA2130979A1 publication Critical patent/CA2130979A1/en
Application granted granted Critical
Publication of CA2130979C publication Critical patent/CA2130979C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
    • 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
    • G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
    • 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
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/20—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterised by details of the game platform
    • A63F2300/201—Playing authorisation given at platform level
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
    • A63F2300/20—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterised by details of the game platform
    • A63F2300/206—Game information storage, e.g. cartridges, CD ROM's, DVD's, smart cards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72—Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219—Countermeasures against side channel or fault attacks
    • 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
    • G06F2221/2109—Game systems
    • 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
    • G06F2221/2121—Chip on media, e.g. a disk or tape with a chip embedded in its case

Abstract

A computer system for high-performance video and audio manipulations comprising a locked memory cartridge and an audio/video/compact disk (CD) drive controller/coprocessor.
The computer system has a central processing unit (CPU) with at least one bus associated therewith, with the bus having at least one bus line. The cartridge comprises a readable memory, a memory control circuit, a lock control circuit, and a connector all in circuit communication with each other. The connector allows the memory, the memory control circuit, and the lock control circuit to be pluggably connected in circuit communication with the CPU. The memory control circuit scrambles some of the bus lines, thereby scrambling the data in the memory on reset, and unscrambles the bus lines responsive to inputs from the lock control circuit. The lock control circuit monitors the bus, waiting for a proper combination of bus values to be asserted onto the bus, at which time the lock control circuit causes the memory control circuit to unscramble the bus lines. The audio/video/CD drive controller/coprocessor comprises a CPU
interface, a CPU cache, a memory controller, a memory bus arbitrator, a DRAM refresher, a video controller, a CD drive controller, a digital signal processor (DSP) sound coprocessor, and a "blitter" graphics coprocessor in an integrated package.
CA002130979A 1993-12-16 1994-08-26 Protected programmable memory cartridge and computer system using same Expired - Fee Related CA2130979C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002232826A CA2232826C (en) 1993-12-16 1994-08-26 Protected programmable memory cartridge and computer system using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US168,675 1993-12-16
US08/168,675 US5666516A (en) 1993-12-16 1993-12-16 Protected programmable memory cartridge having selective access circuitry

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002232826A Division CA2232826C (en) 1993-12-16 1994-08-26 Protected programmable memory cartridge and computer system using same

Publications (2)

Publication Number Publication Date
CA2130979A1 true CA2130979A1 (en) 1995-06-17
CA2130979C CA2130979C (en) 1999-09-07

Family

ID=22612467

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002130979A Expired - Fee Related CA2130979C (en) 1993-12-16 1994-08-26 Protected programmable memory cartridge and computer system using same

Country Status (7)

Country Link
US (5) US5666516A (en)
EP (1) EP0660215A3 (en)
JP (1) JP2720909B2 (en)
KR (1) KR0167814B1 (en)
CN (1) CN1104685C (en)
CA (1) CA2130979C (en)
TW (2) TW332268B (en)

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US5765197A (en) 1998-06-09
US5666516A (en) 1997-09-09
CN1104685C (en) 2003-04-02
EP0660215A2 (en) 1995-06-28
US6122716A (en) 2000-09-19
JP2720909B2 (en) 1998-03-04
US6173358B1 (en) 2001-01-09
TW332268B (en) 1998-05-21
CN1115058A (en) 1996-01-17
CA2130979C (en) 1999-09-07
TW300971B (en) 1997-03-21
EP0660215A3 (en) 1996-06-05
JPH07200287A (en) 1995-08-04
US5761698A (en) 1998-06-02

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