CN1332289C - Multimedia memory card - Google Patents
Multimedia memory card Download PDFInfo
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- CN1332289C CN1332289C CNB2004100277114A CN200410027711A CN1332289C CN 1332289 C CN1332289 C CN 1332289C CN B2004100277114 A CNB2004100277114 A CN B2004100277114A CN 200410027711 A CN200410027711 A CN 200410027711A CN 1332289 C CN1332289 C CN 1332289C
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Abstract
The present invention relates to a multimedia memory card which comprises a basic card of which the outer interface and the configuration size are the same to the original multimedia memory card which is called an MMC card for short. The multimedia memory card is characterized in that a storage region is a mask read only memory device whose addressing is in an address mode, and an addressing switching controller for converting a content reading command into the management of the mask storage region according to an address reading mode is additionally arranged between a controller of a card interface and a bus interface of the storage region. The present invention which has the advantages of novel conception and compact combination can be compatible with an MMC card. The reading speed can reach 3MB/sec. The multimedia memory card particularly has a cipher authenticating function for carrying out data copyright protection which is namely SDMI specification and has high cost performance. The present invention can be widely used as a music playing card, a screen and video playing card, an electronic book card, an electronic game card, a mobile phone, a digital camera, a digital video camera, a microcomputer and a random card of a personal digital assistant and can also be widely used in film and music playing equipment, particularly mobile vehicle-mounted film and music playing equipment.
Description
Technical field
The present invention relates to include only the read only memory device of the electrically-programmable of the passive film that on a public dielectric substrate, forms or thick film element, especially relate to a kind of multimedia storage card.
Background technology
In the digital memory card of a multitude of names, it is minimum in the world at present jumbo flash memory cards that a kind of being known as arranged, overall dimensions are long 32mm * wide 24mm * thick 1.4mm, though (SmartMedia) is thick than smart card, overall volume is littler than smart card, and lighter than smart card, have only 1.5 grams, its English full name is MultiMediaCard, is called for short mmc card, is commonly referred to multimedia storage card.It is developed jointly by U.S. Sandisk company and German Siemens company, provides state-of-the-art module encapsulation technology service by Amkor Technology company, and more common kind is capacity 16MB and 32MB, and capacity 64MB and 128MB also appear on the market.Provide its independently developed IC nude film, element and material by SanDisk company at first, Amkor provides element and material according to its preferred plan supply-chain management system for SanDisk subsequently.Hitachi, Sandisk, each major company such as Siemens that now claims Infineon all produce mmc cards a large amount of, and have been widely used in mobile phone, digital camera, and Digital Video is on the multiple digital products such as MP3 player.
World mmc card association (MMCA) is as promoting the standardization body that the mmc card technology is used in the world, mmc card 4.0 standards have been issued to industry a few days ago, new standard provides wideer data bandwidth and transfer rate faster, and supports two voltage-operated patterns.Though from sales achievement, the compact flash Compact Flash that is called for short the CF card can be rated as the market overlord, it is convenient easy-to-use, but volume is excessive, and power consumption is too high, and read or write speed is barely satisfactory, the birth of a new generation's mmc card, the sale of CF card will be had a strong impact on.
The same with the CF card, mmc card also is that storer and controller are integrated on the same card, and the controller of intelligence guarantees that mmc card has compatibility and dirigibility.In fact, mmc card is compatible before and after being, can the compatible new spec product that occurs later on.
Mmc card is as a kind of data platform cheaply and communication media, and its interface has only 7 pins, and interface cost is lower than 0.5 dollar, and the interface cost of smart card and memory stick (Memory Stick) all will be higher than 1 dollar.In interface, the power supply supply is 3 pins, and the universal serial bus of 3 pins is only used in data manipulation, under the SPI mode of operation, increases by 1 pin and is used to select chip.The universal serial bus clock frequency can reach 20MHz cheaply.
Mmc card comprises overall dimensions and inner controller CPU, control interface circuit, interface driving circuit, power supply processing circuit, storage medium and the data bus of package casing, standard universal seven needle interfaces, long 32mm * wide 24mm * thick 1.4mm.
The ultimate value of flash storage at present is 20MB/sec, and the storage speed of mmc card is near 10MB/sec reading speed average out to 2MB/sec.But flash memory is to adopt the mode of accepting reading command to read the data of depositing in the mmc card.Although adopting this advantage of writing the card mode is to have storage speed faster, yet reading speed is not best.Because mmc card is to go to carry out reading of data with the Card Reader order, the content that direct search will be read has retrieval process relatively.Particularly existing mmc card production cost is directly influenced by the flash memory price, and the market price is very expensive, has seriously restricted its widespread use.
Retrieval in CPRS (Chinese patent document searching system), CNKI full-text database, WPI (world patents index database), PAJ (Jap.P. english abstract database) and EPODOC (EUROPEAN PATENT OFFICE's document databse), Shang Weijian has in storage card the mask ROM that adopts by the address mode addressing, does not also see as yet to have and sets up one be used for the content reading command is converted to the switching controller that reads mode and the mask memory block is managed by the address between memory card interface controller and memory block bus interface.
Summary of the invention
The objective of the invention is to remedy the defective that prior art exists, proposes the multimedia storage card that a kind of multimedia storage card interface that adopts the abbreviation mmc card of original technical standard has more outstanding performance and cheaper price abbreviation RMMC card again.
Purpose of the present invention can be achieved by adopting following technical scheme:
This multimedia storage card, comprise the base card that external interface and overall dimensions are identical with the multimedia storage card of original abbreviation mmc card, described external interface is the standard universal interface, and described base card comprises package casing, register, card interface controller, interface driving circuit, power supply management circuit, memory block and memory block bus interface.
For realizing that the present invention has the purpose than high performance-price ratio, the present invention is a memory carrier with the mask storer, it is characterized in that promptly the memory block is the mask ROM MaskROM that adopts by the address mode addressing, and between card interface controller and memory block bus interface, set up one and be used for the content reading command is converted to the addressing switching controller that reads mode and the mask memory block is managed by the address.
Purpose of the present invention can also be achieved by adopting following technical scheme:
Described mask ROM MaskROM is mask Erasable Programmable Read Only Memory EPROM MaskEPROM or mask Electrically Erasable Read Only Memory MaskP
2ROM.
Described mask Erasable Programmable Read Only Memory EPROM, mask Electrically Erasable Read Only Memory are MOS type ROM (read-only memory) or bipolar ROM.
Described addressing switching controller and original mmc card interface controller are integrated in same circuit chip.
Described standard universal interface is seven needle interfaces compatible fully with original mmc card, and 1 of stitch is called model selection (MS), and 2 of stitch are called order (CMD), and 3 of stitch are called ground wire 1 (V
SS1), 4 of stitch are called power lead (V
DD), 5 of stitch are called clock (CLK), and 6 of stitch are called ground wire 2 (V
SS2), 7 of stitch are called data (DAT).
Described register is three kinds of registers with original mmc card compatibility: storage card identification register CID (Card identification number), associated storage card address register RCA (Relative cardaddress) and storage card special data register CSD (Card specific data).
The overall dimensions of multimedia storage card of the present invention, identical with original mmc card.
Multimedia storage card of the present invention is identical with original mmc card, its driving voltage is 2.7～3.6 volts, read current has only 23 milliamperes, power consumption is very low, can carry out read record repeatedly 300,000 times, reading mode comprises streaming, polylith and monolithic pattern, and it is unit that minimal data transmits with the piece, and default block size is 512Bytes.
Multimedia storage card of the present invention is identical with original mmc card, two kinds of mode of operations of MMC and SPI are arranged, the MMC mode of operation is the acquiescence mode of operation of standard, and the SPI mode of operation is optional second kind of mode of operation, it is a subclass of MMC agreement, only is mainly used in the card that needs normally 1 smallest number and compares the system of MMC agreement for low data transmission rate.
Multimedia storage card of the present invention is identical with original mmc card; adopt Unique ID copyright protection technology and Hitachi Corporation's Super H risc microcontroller kernel; can carry out security-related at a high speed as operations such as encrypting and decryptings; has very strong copyright protection function; also UDAC-MB (the Universal Distribution with Access Control-media base) copyright protection technology of fit applications Hitachi, Sanyo and Fujitsu company exploitation can be used to provide the music distribution service based on mobile phone.
The present invention's beneficial effect against existing technologies is, novel, form compact, particularly adopt the external characteristic and the interface standard of original mmc card, can with the mmc card compatibility, it is with a wide range of applications, and the very ripe integrated mask ROM of height, mask Erasable Programmable Read Only Memory EPROM or the mask Electrically Erasable Read Only Memory of employing technology, less expensive not only, and have and can connect and more outstanding performance such as storage capacity at random.Owing to adopt the novelty super-high density unit design in the memory array, with matrix address storage data, and conduct interviews by the optimization serial line interface of special use, according to the direct reading of data of matrix address, thereby can quickly and reliably carry out data transmission, its reading speed is faster than original mmc card, and speed can reach 3MB/sec, helps promoting its widespread use more.Multimedia storage card of the present invention has high capacity, high-performance, and reading speed is fast, read very cheap, the many-sided characteristics such as memory contents safety especially of accuracy height, price.It is SDMI specification and very high cost performance that multimedia storage card particularly of the present invention has the secret signal authentication function of carrying out the data copyright protection, makes multimedia storage card of the present invention have purposes very widely.Can be widely used as the random card of music card, video display broadcast card, electronic chart book card, electronic game card, mobile phone, digital camera, Digital Video, microcomputer and personal digital assistant PDA, can also be widely used in the audio-visual playback equipment.When its capacity reaches 512MB when above, it in addition can store a film, this movie card can replace the film CD, and than the easier preservation of film CD, more difficult damage.Particularly be applied in the mobile vehicle-mounted audio/video playback equipment, can also save not only expensive but also annoying shock-absorbing facility, its advantage is that disc memory devices such as CD, VCD, DVD are incomparable.
Description of drawings
Accompanying drawing is inner function circuit square frame of the present invention and interface synoptic diagram.
Embodiment
Contrast accompanying drawing and the present invention is specifically described below in conjunction with embodiment.
A kind of 64MByte multimedia storage card (RMMC) E57R06402, comprise the base card that external interface and overall dimensions are identical with the multimedia storage card of original abbreviation mmc card, external interface is a standard universal interface 1, and the base card comprises package casing, register 2, card interface controller 3, interface driving circuit 4, power supply management circuit 5, memory block 6 and memory block bus interface 7.
Memory block 6 is the MOS type mask ROMs that adopt by the address mode addressing, and sets up one be used for the content reading command is converted to the addressing switching controller 8 that reads mode and the mask memory block is managed by the address between card interface controller 3 and memory block bus interface 7.
Described addressing switching controller 8 is integrated in same circuit chip with original mmc card interface controller 3.
Described standard universal interface 1 is seven needle interfaces compatible fully with original mmc card, and 1 of stitch is called model selection (MS), and 2 of stitch are called order (CMD), and 3 of stitch are called ground wire 1 (V
SS1), 4 of stitch are called power lead (V
DD), 5 of stitch are called clock (CLK), and 6 of stitch are called ground wire 2 (V
SS2), 7 of stitch are called data (DAT).
Described register 2 is three kind registers compatible fully with original mmc card: storage card identification register 9, associated storage card address register 10 and storage card special data register 11.
The overall dimensions of this multimedia storage card, identical with original mmc card, length is 32 millimeters, and width is 24 millimeters, and thickness is 1.4 millimeters.
The driving voltage of this multimedia storage card is 2.7～3.6 volts, and read current has only 23 milliamperes, and power consumption is very low, can carry out read record repeatedly 300,000 times, reading mode comprises streaming, polylith and monolithic pattern, and it is unit that minimal data transmits with the piece, and default block size is 512Bytes.
This multimedia storage card has MMC and two kinds of mode of operations of SPI, and the MMC mode of operation is the acquiescence mode of operation of standard, has the complete characteristic of MMC.And the SPI mode of operation is optional second kind of mode of operation, it is a subclass of MMC agreement, only be mainly used in the card that needs normally 1 smallest number and compare the system of MMC agreement for low data transmission rate, the SPI mode of operation can reduce to minimum to the design cost, but performance is not as good as the MMC mode of operation.
This multimedia storage card adopts Unique ID copyright protection technology and Hitachi Corporation's Super HRISC micro-processor kernel; can carry out security-related at a high speed as operations such as encrypting and decryptings; has very strong copyright protection function; also UDAC-MB (the Universal Distribution with Access Control-media base) copyright protection technology of fit applications Hitachi, Sanyo and Fujitsu company exploitation can be used to provide the music distribution service based on mobile phone.
Multimedia storage card of the present invention is by interface driving circuit 4, card interface controller 3 and addressing switching controller 8, the reading command that external interface 1 is received to flash memory, be transformed to the matrix address signal that reads mask ROM and, directly press the address reading data operation with the matrix address stored data signal.
Claims (8)
1, a kind of multimedia storage card, comprise the base card that external interface and overall dimensions are identical with the multimedia storage card of original abbreviation mmc card, described external interface is the standard universal interface, described base card comprises package casing, register, card interface controller, interface driving circuit, the power supply management circuit, memory block and memory block bus interface, it is characterized in that the memory block is the mask ROM that adopts by the address mode addressing, and between card interface controller and memory block bus interface, set up one and be used for the content reading command is converted to the addressing switching controller that reads mode and the mask memory block is managed by the address.
2, multimedia storage card according to claim 1 is characterized in that described mask ROM is, mask Erasable Programmable Read Only Memory EPROM or mask Electrically Erasable Read Only Memory.
3, multimedia storage card according to claim 2 is characterized in that described mask Erasable Programmable Read Only Memory EPROM, mask Electrically Erasable Read Only Memory are MOS type ROM (read-only memory) or bipolar ROM.
4, multimedia storage card according to claim 1 is characterized in that described addressing switching controller and original mmc card interface controller are integrated in same circuit chip.
5, multimedia storage card according to claim 1, it is characterized in that described standard universal interface is seven needle interfaces compatible fully with original mmc card, 1 of stitch is called model selection, 2 of stitch are called order, 3 of stitch are called ground wire 1, and 4 of stitch are called power lead, and 5 of stitch are called clock, 6 of stitch are called ground wire 2, and 7 of stitch are called data.
6, multimedia storage card according to claim 1 is characterized in that described register is three kinds of registers with original mmc card compatibility: storage card identification register, associated storage card address register and storage card special data register.
7, multimedia storage card according to claim 1 is characterized in that driving voltage is 2.7～3.6 volts, and reading mode comprises streaming, polylith and monolithic pattern.
8, multimedia storage card according to claim 1 is characterized in that having two kinds of mode of operations of MMC and SPI, and the MMC mode of operation is the acquiescence mode of operation of standard, and the SPI mode of operation is optional second kind of mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100277114A CN1332289C (en) | 2004-06-14 | 2004-06-14 | Multimedia memory card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100277114A CN1332289C (en) | 2004-06-14 | 2004-06-14 | Multimedia memory card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584925A CN1584925A (en) | 2005-02-23 |
| CN1332289C true CN1332289C (en) | 2007-08-15 |
Family
ID=34601461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100277114A Expired - Fee Related CN1332289C (en) | 2004-06-14 | 2004-06-14 | Multimedia memory card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1332289C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334520C (en) * | 2005-07-08 | 2007-08-29 | 北京飞天诚信科技有限公司 | Information safety appliance based on MMC / SDIO interface and communication method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5513138A (en) * | 1993-05-13 | 1996-04-30 | Ricoh Co., Ltd. | Memory card having a plurality of EEPROM chips |
| CN1122634A (en) * | 1994-03-07 | 1996-05-15 | Cp8川萨克公司 | A secure memory card |
| CN1272660A (en) * | 2000-01-11 | 2000-11-08 | 程世平 | Digital code book storage card |
| JP2002042080A (en) * | 2000-07-24 | 2002-02-08 | Matsushita Graphic Communication Systems Inc | Memory card controller |
| WO2002049039A2 (en) * | 2000-11-22 | 2002-06-20 | Sandisk Corporation | Techniques for operating non-volatile memory systems with data sectors having different sizes than the sizes of the pages and/or blocks of the memory |
| JP2003058420A (en) * | 2001-08-15 | 2003-02-28 | Sony Corp | Method for reading data out of nand type flash memory |
-
2004
- 2004-06-14 CN CNB2004100277114A patent/CN1332289C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5513138A (en) * | 1993-05-13 | 1996-04-30 | Ricoh Co., Ltd. | Memory card having a plurality of EEPROM chips |
| CN1122634A (en) * | 1994-03-07 | 1996-05-15 | Cp8川萨克公司 | A secure memory card |
| CN1272660A (en) * | 2000-01-11 | 2000-11-08 | 程世平 | Digital code book storage card |
| JP2002042080A (en) * | 2000-07-24 | 2002-02-08 | Matsushita Graphic Communication Systems Inc | Memory card controller |
| WO2002049039A2 (en) * | 2000-11-22 | 2002-06-20 | Sandisk Corporation | Techniques for operating non-volatile memory systems with data sectors having different sizes than the sizes of the pages and/or blocks of the memory |
| JP2003058420A (en) * | 2001-08-15 | 2003-02-28 | Sony Corp | Method for reading data out of nand type flash memory |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1584925A (en) | 2005-02-23 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091030 Address after: 3, building 23, International Plaza, Buji famous city, Guangdong, Shenzhen Province: 518112 Co-patentee after: Zheng Longgen Patentee after: Zhang Yi Address before: 3, building 23, International Plaza, Buji famous city, Guangdong, Shenzhen Province: 518112 Patentee before: Zhang Yi |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fujian Yilong Electronic Technology Co. Assignor: Zhangyi|Zheng Longgen Contract fulfillment period: 2009.11.2 to 2024.6.13 contract change Contract record no.: 2009350000230 Denomination of invention: Multimedia memory card Granted publication date: 20070815 License type: Exclusive license Record date: 20091112 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.2 TO 2024.6.13; CHANGE OF CONTRACT Name of requester: FUJIAN PROVINCE YILONG ELECTRONICS SCIENCE AND TEC Effective date: 20091112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20160614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |