CN100351862C - Mini type electronic card having plural different transmission interface - Google Patents
Mini type electronic card having plural different transmission interface Download PDFInfo
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- CN100351862C CN100351862C CNB031494188A CN03149418A CN100351862C CN 100351862 C CN100351862 C CN 100351862C CN B031494188 A CNB031494188 A CN B031494188A CN 03149418 A CN03149418 A CN 03149418A CN 100351862 C CN100351862 C CN 100351862C
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- card
- electronic card
- small electronic
- transmission interface
- impact damper
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Abstract
The present invention relates to a mini-type electronic card with a plurality of different transmission interfaces, which can be respectively used as a plurality of different specifications of mini-type electronic cards. When the mini-type electronic card is inserted into a card reader to access or control a built-in function die set, the mini-type electronic card detects the reference voltage of a transmission interface of the card reader so as to judge that the mini-type electronic card is currently operated as which kind of mini-type electronic card; then, the mini-type electronic card is communicated with the card reader according to a definitive communication agreement to reach the purpose of accessing the built-in function die set of the mini-type electronic card.
Description
Technical field
The invention relates to a kind of small electronic card, refer to a kind of small electronic card especially with a plurality of different transmission interfaces.
Background technology
Progress along with electronics technology, the miniaturization that becomes of having healed of all kinds of portable electronic products, for example, notes type (Notebook) computer, hand held (Palm) computer or PDA(Personal Digital Assistant) etc., the portable electronic product that this kind is small-sized is owing to can carry and have powerful calculation process ability, therefore provide the user great convenience, the user also can be with the data storage of portable electronic product in mini memory card (memory card), reaching the purpose of data portability, or grafting networking card, the electronic cards of data machine card or the like is extended its function.In addition, consumption electrogenesis product, for example digital camera, MP3 dial and put device etc., also with data storage in mini memory card.
At present on the market, more common mini memory card (small electronic card) is to be secure digital electronic card (Secure Digital Card, SD card) and memory stick (Memory Stick Card, MS card).Wherein, the SD card is for a kind of high safety, flash memory (Flash) electronic cards that can substitute, except can storing data, the function of encryption more can be provided data, it has characteristics such as high storage capacity and low consumption be electrical, and provide anti-write to switch select, to prevent that data from unexpectedly being deleted.The MS card is developed by Japanese Sony Corporation, present then be used in oneself electronic product produced of Sony Corporation more, equally has characteristics such as high storage capacity and low consumption be electrical.
As shown in Figure 1, when SD card 22 was inserted SD card reader 20 (card reader), card reader 20 used the SD communication protocols with the stored data of access SD card 22; When MS card 32 was inserted MS card reader 30, card reader 30 used the MS communication protocols with the stored data of access MS card 32.
Yet along with the user is more and more high to the demand of portable electronic product and the sub-product of consumption electrogenesis, jointly, the demand of small electronic card is also more and more high.Because the small electronic card of all size is also incompatible each other, the user can't only use single small electronic card and be applicable to most portable electronic product or the sub-product of consumption electrogenesis, and this will cause the puzzlement of user when choosing small electronic card.
Summary of the invention
Fundamental purpose of the present invention is that a kind of small electronic card that plural number is planted different transmission interfaces that has is being provided, and can be applicable to use plural number to plant one of them portable electronic product of transmission interface.
For reaching above-mentioned purpose, the present invention discloses a kind of small electronic card that plural number is planted transmission interface that has, and comprising: functional module group; Controller is in order to connect and the access facility module; First impact damper is in order to being connected to controller, and carries out the transmission of first control signal with it; And second impact damper, be in order to being connected to controller, and carry out the transmission of second control signal with it; Wherein first impact damper also has the first built-in resistance, when small electronic card is inserted card reader, small electronic card be to use transmission interface one of them, small electronic card is detected first reference voltage that first impact damper is provided, and then uses first impact damper to carry out the transmission of first control signal if meet; Second impact damper also has the second built-in resistance, when small electronic card is inserted card reader, small electronic card be to use transmission interface one of them, small electronic card is detected second reference voltage that second impact damper is provided, if meet and then use second impact damper to carry out the transmission of second control signal.
Wherein, this small electronic card uses this plural number transmission interface one of them is to be used for the secure digital electronic card.
Wherein, this first reference voltage is to be high reference voltage.
Wherein, this first control signal is to be a control command (CMD Command) signal.
Wherein, this small electronic card uses this plural number transmission interface one of them is to be used for memory stick.
Wherein, this second reference voltage is to be low reference voltage.
Wherein, this second control signal is to be a bus state (BS Bus Status) signal.
Because small electronic card can be used as secure digital electronic card and memory stick, thereby can be used for more most portable electronic product and the sub-product of consumption electrogenesis, so can reach purpose of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram of existing small electronic card.
Fig. 2 is that the present invention has the synoptic diagram that plural number is planted the small electronic card of transmission interface.
Fig. 3 is that the present invention has the calcspar that plural number is planted the small electronic card of transmission interface.And
Fig. 4 be the present invention another have the calcspar that plural number is planted the small electronic card of transmission interface.
Embodiment
As shown in Figure 2, the small electronic card 40 of plural number kind transmission interface has a transmission interface and a transmission interface that uses the MS communication protocol that uses the SD communication protocol.When small electronic card 40 is to be the SD card, and when inserting card reader 20, card reader 20 uses the SD communication protocols to come the stored data of access small electronic card 40; When small electronic card 40 is to be the MS card, and when inserting card reader 30, card reader 30 uses the MS communication protocols to come the stored data of access small electronic card 40.
As shown in the table, the function of the pin position (pin) of MS card and SD card and definition thereof.
| The MS card | The SD card | ||
| The pin position | Function | The pin position | Function |
| 9 | | 4 | VCC |
| 2 | CLK | 2 | CLK |
| 8 | BS | 5 | |
| 1，6，10 | VSS | 3，6 | |
| 4 | Data 0 | 7 | Data 0 |
| 3 | Data 1 | 8 | Data 1 |
| 5 | Data 2 | 9 | Data 2 |
| 7 | Data 3 | 1 | Data 3 |
| 10 | INS | ||
Wherein, Data 0, Data 1, Data 2 and Data 3 are in order to transmit data signal, VCC is connected to positive source, VSS is connected to power cathode, CLK is connected to clock signal, control command (CMD Command), bus state (BS Bus Status) are in order to transmission control/status signal, and whether INS inserts (in small electronic card 40, INS is connected to power cathode) in the card reader 20 in order to detecting SD card.By in above-mentioned as can be known, the defined functional similarity in pin position of SD card and MS card, bigger difference is that the pin position 5 that is the SD card is the connections as cmd signal, its initial state is to be high reference voltage; The pin position 8 of MS card is the connection as the BS signal, and its initial state is to be low reference voltage.So, if small electronic card 40 during respectively as SD card or MS card, can be detectd the different reference voltages of side SD card reader 20 and MS card reader 30 respectively, SD card reader 20 and MS card reader 30 access small electronic card 40 correctly then.For example, small electronic card 40 detecting SD card reader 20 and when obtaining high reference voltage, then use the SD communication protocol to come to link up with SD card reader 20; Small electronic card 40 detecting MS card reader 30 and when obtaining low reference voltage, then use the MS communication protocol to come to link up with MS card reader 30.Thus, small electronic card 40 can have the transmission interface of two kinds of different sizes, can be respectively as SD card or MS card, to be applicable to more portable electronic product and the sub-product of consumption electrogenesis.
As shown in Figure 3, small electronic card 40 has SD to be exported into impact damper 401, MS and exports into impact damper 402, card side controller 403 and functional module group 404, and when this electronic cards was a mini memory card, this functional module group 404 was to be a flash memory; And SD to export into impact damper 401 be in order to output and input CMD control signal, its inside is provided with drop-down (pull down) resistance R 3; It is that its inside is provided with and draws (pull up) resistance R 4 on one in order to output and input BS control signal that MS exports into impact damper 402; Wherein, pull down resistor R3 resistance value is 500 kilohms, and pull-up resistor R4 resistance value is 5,000 to 50 kilohms.SD card reader 20 inside have SD exports into impact damper 201 and host-side controller 202, and SD exports into impact damper 201 inside and be provided with a pull-up resistor R1, and the resistance value of resistance R 1 is 5 kilohms.
When small electronic card 40 is inserted SD card reader 20, card side controller 403 activation SDOE are with the reference voltage of detecting SDIN, because the dividing potential drop result of resistance R 1 and R3, make SDIN be high reference voltage, card side controller 403 judges that card reader is to be a SD card reader 20, thereby start the bus-bar decipher function of SD interface, and link up with CMD control signal and host-side controller 202.Thus, host-side controller 202 can be by the CMD control signal control card side controller 403, with access facility module 404.Certainly, after small electronic card 40 was inserted SD card reader 20, SD card reader 20 (was for example also exported data signal, Data 0, Data 1, Data 2 and Data 3), power supply signal (for example, VCC, VSS) and clock signal (for example, CLK), to cooperate the CMD control signal.
As shown in Figure 4, this moment, small electronic card 40 was as the MS card.MS card reader 30 inside have MS exports into impact damper 301 and host-side controller 302, and MS exports into impact damper 301 inside and is provided with a pull down resistor R2; The built-in pull-up resistor of small card BS pin is R4; Wherein, pull-up resistor R4 resistance value is 500 kilohms, and pull down resistor R2 resistance value is 5,000 to 50 kilohms.
When small electronic card 40 is inserted MS card reader 30, card side controller 403 activation MSOE are with the reference voltage of detecting MSIN, because the dividing potential drop result of resistance R 2 and R4 makes MSIN become low reference voltage, card side controller 403 judges that card reader is to be a MS card reader 30, thereby start the bus-bar decipher function of MS interface, and link up with BS control signal and host-side controller 302.Thus, host-side controller 302 can be by the BS control signal control card side controller 403, with access facility module 404.Certainly, after small electronic card 40 was inserted MS card reader 30, MS card reader 30 was also exported data signal, power supply signal and clock signal, to cooperate the BS control signal.
Because the structure of mmc card and SD card, MS card are similar, well imagine ground, small electronic card 40 also can be used as the small electronic card of mmc card (MultiMeida Card) and MS card double-purpose.
The foregoing description only is to give an example the interest field that the present invention advocated for convenience of description
From should being as the criterion, but not only limit to the foregoing description so that claim is described.
Claims (7)
1. the small electronic card with plural transmission interface is characterized in that, comprising:
One functional module group;
One controller is in order to connect and this functional module group of access;
One first impact damper is in order to being connected to this controller, and carries out the transmission of one first control signal with it; And
One second impact damper is in order to being connected to this controller, and carries out the transmission of one second control signal with it; Wherein
This first impact damper also has one first built-in resistance, when this small electronic card is inserted a card reader, this small electronic card be to use this plural number transmission interface one of them, this small electronic card is detected one first reference voltage that this first impact damper is provided, and then uses this first impact damper to carry out the transmission of this first control signal if meet; This second impact damper also has one second built-in resistance, when this small electronic card is inserted this card reader, this small electronic card be to use this plural number transmission interface one of them, this small electronic card is detected one second reference voltage that this second impact damper is provided, and then uses this second impact damper to carry out the transmission of this second control signal if meet.
2. the small electronic card with plural transmission interface as claimed in claim 1 is characterized in that, wherein, this small electronic card uses this plural number transmission interface, and one of them is to be used for the secure digital electronic card.
3. the small electronic card with plural transmission interface as claimed in claim 2 is characterized in that, wherein, this first reference voltage is to be high reference voltage.
4. the small electronic card with plural transmission interface as claimed in claim 2 is characterized in that, wherein, this first control signal is to be a control command signal.
5. the small electronic card with plural transmission interface as claimed in claim 1 is characterized in that, wherein, this small electronic card uses this majority transmission interface, and one of them is to be used for memory stick.
6. the small electronic card with plural transmission interface as claimed in claim 5 is characterized in that, wherein, this second reference voltage is to be low reference voltage.
7. the small electronic card with plural transmission interface as claimed in claim 5 is characterized in that, wherein, this second control signal is to be a bus state signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031494188A CN100351862C (en) | 2003-06-19 | 2003-06-19 | Mini type electronic card having plural different transmission interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031494188A CN100351862C (en) | 2003-06-19 | 2003-06-19 | Mini type electronic card having plural different transmission interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1567366A CN1567366A (en) | 2005-01-19 |
| CN100351862C true CN100351862C (en) | 2007-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031494188A Expired - Fee Related CN100351862C (en) | 2003-06-19 | 2003-06-19 | Mini type electronic card having plural different transmission interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100351862C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304115A (en) * | 1999-11-24 | 2001-07-18 | 姚立和 | Storage card with double interface and its conversion module |
| CN2529322Y (en) * | 2002-02-28 | 2003-01-01 | 陈建安 | CF extension card |
| US20030082961A1 (en) * | 2001-10-30 | 2003-05-01 | Keith Mowery | Multifunction passive socket for flash media cards |
-
2003
- 2003-06-19 CN CNB031494188A patent/CN100351862C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304115A (en) * | 1999-11-24 | 2001-07-18 | 姚立和 | Storage card with double interface and its conversion module |
| US20030082961A1 (en) * | 2001-10-30 | 2003-05-01 | Keith Mowery | Multifunction passive socket for flash media cards |
| CN2529322Y (en) * | 2002-02-28 | 2003-01-01 | 陈建安 | CF extension card |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1567366A (en) | 2005-01-19 |
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