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Multimedia memory card

A technology of multimedia memory card and storage area, applied in information storage, static memory, read-only memory, etc., can solve the problems of high market price, not yet seen, restricting wide application, etc., achieve low price, promote wide application, storage The effect of content security

Inactive Publication Date: 2005-02-23
张毅 +1
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  • Abstract
  • Description
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Problems solved by technology

Especially the production cost of the existing MMC card is directly affected by the price of the flash memory, and the market price is very expensive, which seriously restricts its wide application
[0008] Searched in CPRS (Chinese Patent Literature Retrieval System), China Journal Network Full-text Database, WPI (World Patent Index Database), PAJ (Japanese Patent Abstracts Database) and EPODOC (European Patent Office Document Database), no one has been found in the memory card The mask read-only memory addressing by address mode is adopted in the present invention, and there has not yet been seen to add a device between the memory card interface controller and the storage area bus interface to convert the content read instruction into the address read mode and the mask read-only memory. Membrane storage area managed by the switching controller

Method used

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  • Multimedia memory card

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with specific embodiments.

[0026] A 64MByte multimedia memory card (RMMC) E57R06402, including a package shell, a standard universal interface 1, a register 2, a card interface controller 3, an interface drive circuit 4, a power supply management circuit 5, a storage area 6 and a storage area bus interface 7.

[0027] The storage area 6 is a MOS-type mask read-only memory addressable by address mode, and an additional one is set between the card interface controller 3 and the storage area bus interface 7 for converting the content reading instruction into a read-by-address mode and an address conversion controller 8 for managing the mask storage area.

[0028] The address conversion controller 8 and the original MMC card interface controller 3 are integrated in the same circuit chip.

[0029] The standard universal interface 1 is a seven-pin interfac...

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Abstract

A multimedia storage card comprising base card with external interface and outline size as the same as multimedia storage card of MMC card is featured as using mask read only storage as storing region, and adding an addressing switch controller between card interface controller and storage region bus interface to convert content read command to be read as per address and to manage mask storage region.

Description

technical field [0001] The present invention relates to an electrically programmable read-only memory device comprising only passive thin film or thick film elements formed on a common insulating substrate, in particular to a multimedia memory card. Background technique [0002] Among the various digital memory cards, there is a flash memory card that claims to be the world's smallest large-capacity flash memory card. Its dimensions are 32mm long x 24mm wide x 1.4mm thick. The overall volume is smaller than the smart card, and it is also lighter than the smart card, only 1.5 grams. Its full English name is MultiMediaCard, abbreviated as MMC card, usually called a multimedia memory card. It is jointly developed by Sandisk Company of the United States and Siemens Company of Germany, and Amkor Technology Company provides the most advanced module packaging technology services. The more common varieties are 16MB and 32MB in capacity, and 64MB and 128MB in capacity are also availa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G11C16/00
Inventor 张毅
Owner 张毅
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