WO1999045460A3 - Flash memory card with enhanced operating mode detection and user-friendly interfacing system - Google Patents

Flash memory card with enhanced operating mode detection and user-friendly interfacing system Download PDF

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Publication number
WO1999045460A3
WO1999045460A3 PCT/US1999/004633 US9904633W WO9945460A3 WO 1999045460 A3 WO1999045460 A3 WO 1999045460A3 US 9904633 W US9904633 W US 9904633W WO 9945460 A3 WO9945460 A3 WO 9945460A3
Authority
WO
WIPO (PCT)
Prior art keywords
operating mode
flash memory
memory card
interface device
host computer
Prior art date
Application number
PCT/US1999/004633
Other languages
French (fr)
Other versions
WO1999045460A2 (en
Inventor
Petro Estakhri
Mahmud Assar
Original Assignee
Lexar Media Inc
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
Priority claimed from US09/034,173 external-priority patent/US6182162B1/en
Application filed by Lexar Media Inc filed Critical Lexar Media Inc
Priority to JP54497199A priority Critical patent/JP3714969B2/en
Priority to DE19980546T priority patent/DE19980546B4/en
Priority to GB9925231A priority patent/GB2339044B/en
Publication of WO1999045460A2 publication Critical patent/WO1999045460A2/en
Publication of WO1999045460A3 publication Critical patent/WO1999045460A3/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/20—Memory cell initialisation circuits, e.g. when powering up or down, memory clear, latent image memory
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/387—Information transfer, e.g. on bus using universal interface adapter for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4081—Live connection to bus, e.g. hot-plugging
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
    • G11C7/1015—Read-write modes for single port memories, i.e. having either a random port or a serial port
    • G11C7/1045—Read-write mode select circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]

Abstract

An interfacing system facilitating user-friendly connectivity in a selected operating mode between a host computer system and a flash memory card. The interfacing system includes an interface device and a flash memory card. The interfacing system features significantly expanded operating mode detection capability within the flash memory card and marked reduction in the incorrect detection of the operating mode. The interface device includes a first end for coupling to the host computer and a second end for coupling to the flash memory card, while supporting communication in the selected operating mode which is also supported by the host computer system. The flash memory card utilizes a fifty pin connection to interface with the host computer system through the interface device. The fifty pin connection of the flash memory card can be used with different interface devices in a variety of configurations such as a universal serial mode, PCMCIA mode, and ATA IDE mode. Each of these modes of operation require different protocols. Upon initialization with the interface device, the flash memory card automatically detects the selected operating mode of the interface device and configures itself to operate with the selected operating mode. The operating mode detection is accomplished by sensing unencoded signals and encoded signals. The encoded signals are encoded with a finite set of predetermined codes. Each predetermined code uniquely identifies a particular operating mode.
PCT/US1999/004633 1998-03-02 1999-03-02 Flash memory card with enhanced operating mode detection and user-friendly interfacing system WO1999045460A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP54497199A JP3714969B2 (en) 1998-03-02 1999-03-02 Flash memory card with improved operating mode detection and user-friendly interfacing system
DE19980546T DE19980546B4 (en) 1998-03-02 1999-03-02 Flash memory card with advanced operating mode detection and easy-to-use interface system
GB9925231A GB2339044B (en) 1998-03-02 1999-03-02 Flash memory card with enhanced operating mode detection and user-friendly interfacing system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/034,173 1998-03-02
US09/034,173 US6182162B1 (en) 1998-03-02 1998-03-02 Externally coupled compact flash memory card that configures itself one of a plurality of appropriate operating protocol modes of a host computer
US09/234,430 US6385667B1 (en) 1998-03-02 1999-01-20 System for configuring a flash memory card with enhanced operating mode detection and user-friendly interfacing system
US09/234,430 1999-01-20

Publications (2)

Publication Number Publication Date
WO1999045460A2 WO1999045460A2 (en) 1999-09-10
WO1999045460A3 true WO1999045460A3 (en) 1999-10-21

Family

ID=26710651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/004633 WO1999045460A2 (en) 1998-03-02 1999-03-02 Flash memory card with enhanced operating mode detection and user-friendly interfacing system

Country Status (5)

Country Link
US (4) US6721819B2 (en)
JP (1) JP3714969B2 (en)
DE (1) DE19980546B4 (en)
GB (1) GB2339044B (en)
WO (1) WO1999045460A2 (en)

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US20060085578A1 (en) 2006-04-20
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US7421523B2 (en) 2008-09-02
US6721819B2 (en) 2004-04-13
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US7111085B2 (en) 2006-09-19
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