CN2884331Y - Read-write device having double storage-card - Google Patents
Read-write device having double storage-card Download PDFInfo
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- CN2884331Y CN2884331Y CN 200620005382 CN200620005382U CN2884331Y CN 2884331 Y CN2884331 Y CN 2884331Y CN 200620005382 CN200620005382 CN 200620005382 CN 200620005382 U CN200620005382 U CN 200620005382U CN 2884331 Y CN2884331 Y CN 2884331Y
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- storage card
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Abstract
A reading and writing apparatus for a pair of memory cards, the memory card is the MMC card, SD card or SDIO card; the reading and writing apparatus comprises a central processing unit, a system power, two memory card slots, two switches and two detectors; The two memory card slot is connected with the central processing unit through SD bus to operate the reading and writing data; the central processing unit is connected with system power, system power is connected with two memory card slots through two switches respectively, two memory card slots are connected with the central processing unit through two detectors separately, to form inserting and pulling type power control circuit. As adopted the above-mentioned structure, the utility model can operate the reading and writing data to two MMC card, SD card and SDIO card at the same time, easy to use, with high working efficiency, easy popularization and application.
Description
Technical field
The utility model relates to a kind of read-write equipment of storage card, relate in particular to a kind of can be simultaneously and two storage cards, comprise that mmc card, SD card and SDIO stick into two card read-write equipments of capable read-write operation.
Background technology
Along with the development of hyundai electronics mechanics of communication, various personal portable multimedia recording/displaying devices are generally used by people, as MP3, Digital Video, digital camera, e-book, PDA, mobile phone, toy etc.
Mmc card, SD card and SDIO card all are the storage cards that are applied to various multimedia recording and playing apparatus, wherein, the Chinese translation of MMC (MultiMedia Card) card is a multimedia card, is present a kind of very little FlashMemory storage card, and size has only 32mm * 24mm * 1.4mm; The Chinese translation of SD (Secure Digital Card) card is a safe digital card, and SD is stuck on the profile and is consistent with MultiMedia Card card, and size dimension is slightly thicker than mmc card, and capacity is also big a lot, and compatible mmc card interface specification; SDIO (I/O) card is a kind of interface of function of expansion bands SD card jack equipment.
Memory card read/write device in the existing various personal portable multimedia recording/displaying device all can only insert a storage card and it is carried out read-write operation, has influenced the convenience of work efficiency and use.
In sum, memory card read/write device of the prior art exists defective and deficiency, is necessary to be improved.
The utility model content
But the purpose of this utility model provides a kind of working stability ground while and two storage cards, comprises that mmc card, SD card and SDIO stick into two card read-write equipments of capable read-write operation, have overcome deficiency of the prior art.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of double memory cards read-write equipment, described storage card are mmc card, SD card or SDIO card; Described read-write equipment comprises central processing unit, system power supply, two storage card slots, two power switches and two detectors; Two storage card slots are connected with central processing unit by the SD bus and carry out data read-write operation; Central processing unit is connected with system power supply, and system power supply is connected with two storage card slots respectively by two power switches, and two storage card slots are connected with central processing unit by two detectors respectively, constitute the hot swap type power control circuit.
Described double memory cards read-write equipment, wherein, the input port of described two storage card slots is parallel with an anti-static protection circuit.
Owing to adopted above-mentioned structure, the utility model can stick into the line data read-write operation to two mmc cards, SD card and SDIO simultaneously, and easy to use, high efficiency is easy to promotion and application.
In the read-write equipment of the present utility model, the design of the hot swap type power control circuit that central processing unit, system power supply, detector and power switch constitute can prevent to make the system power supply short circuit need burn device because of the user misplugs into the micro metal type objects; The design of ESD anti-static protection circuit can prevent that the situation of smashing device as the surge current that static discharge phenomenons such as human body and object friction, forceful electric power discharge cause from occurring, thus the safety and reliability of better protection device.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effect apparent by detailed description to preferred embodiment of the present utility model.
In the accompanying drawing,
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, should obtain thus going deep into and concrete understanding, yet drawings and embodiments only provide reference and explanation usefulness, are not to be used for the utility model is limited.
As shown in Figure 1, a kind of double memory cards read-write equipment, described storage card are mmc card, SD card or SDIO card; Described read-write equipment comprises central processing unit, system power supply, two storage card slots, two power switches and two detectors; Two storage card slots are connected with central processing unit by the SD bus and carry out data read-write operation; Central processing unit is connected with system power supply, and system power supply is connected with two storage card slots respectively by two power switches, and two storage card slots are connected with central processing unit by two detectors respectively, constitute the hot swap type power control circuit; The input port of two storage card slots is parallel with an anti-static protection circuit.
Circuit diagram of the present utility model as shown in Figure 2.Wherein, chip U1, U2, U3, U4 are the ESD electrostatic-proof protection device, and model is ESDA6V1-5P6.The model of field effect transistor Q1 and Q2 is AP2305GN.
Each interface circuit is formed by three parts: the one, two duplicate SD/MMC/SDIO card of controlling Design mode are arranged; Two is that two interfaces all are the electric heating plug-ins, and interface is not charged when card inserts; Three is that two interfaces all have ESD antistatic protection function, can prevent because the situation that the system that the electric discharge phenomena that static causes are brought to system burns takes place.
The memory card interface circuit compatibility is supported the interface of mmc card, SD card and SDIO card and other SD card class, this class storage card is the design that has PUSH TO PUSH, has auto-lock function, if the user does not insert good card, interface has the signal feedback that reports an error and gives system, can be not undesired because of the bad Card Reader that causes of user's plug-in card.
The hot swap type power control circuit is an out-put supply just after the card of SD/MMC/SDIO type is inserted into interface, if what insert is not that the object mistake of SD/MMC/SDIO type has been inserted on the interface, as coin, key etc., particularly micro metal thing such as coin can prevent to make the system power supply short circuit need burn system because of the user misplugs into the micro metal type objects like this.
The English full name of ESD is Electro-Static discharge, and Chinese is put for static.The ESD anti-static protection circuit can prevent that the situation of the system that smashes as the surge current that static discharge phenomenons such as human body and object friction, forceful electric power discharge cause from occurring, thus the safety and reliability of better protection system.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (2)
1, a kind of double memory cards read-write equipment, described storage card is mmc card, SD card or SDIO card, it is characterized in that: described read-write equipment comprises central processing unit, system power supply, two storage card slots, two power switches and two detectors; Two storage card slots are connected with central processing unit by the SD bus and carry out data read-write operation; Central processing unit is connected with system power supply, and system power supply is connected with two storage card slots respectively by two power switches, and two storage card slots are connected with central processing unit by two detectors respectively, constitute the hot swap type power control circuit.
2, double memory cards read-write equipment according to claim 1 is characterized in that, the input port of described two storage card slots is parallel with an anti-static protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620005382 CN2884331Y (en) | 2006-01-26 | 2006-01-26 | Read-write device having double storage-card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620005382 CN2884331Y (en) | 2006-01-26 | 2006-01-26 | Read-write device having double storage-card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884331Y true CN2884331Y (en) | 2007-03-28 |
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ID=37957383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620005382 Expired - Fee Related CN2884331Y (en) | 2006-01-26 | 2006-01-26 | Read-write device having double storage-card |
Country Status (1)
| Country | Link |
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| CN (1) | CN2884331Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929749A (en) * | 2011-08-09 | 2013-02-13 | 中兴通讯股份有限公司 | Method and device for switching storage element and extension element on mobile terminal |
| CN103034597A (en) * | 2011-07-18 | 2013-04-10 | 凹凸电子（武汉）有限公司 | Device and method for operating memory cards |
| CN108288441A (en) * | 2018-03-17 | 2018-07-17 | 广东迪艾生光电技术有限公司 | A kind of city lighting engineering control system for simulating SD card read-write system and its application |
| CN113706740A (en) * | 2021-08-27 | 2021-11-26 | 深圳市奥赛克科技有限公司 | Automobile data recorder with control circuit |
-
2006
- 2006-01-26 CN CN 200620005382 patent/CN2884331Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034597A (en) * | 2011-07-18 | 2013-04-10 | 凹凸电子（武汉）有限公司 | Device and method for operating memory cards |
| CN102929749A (en) * | 2011-08-09 | 2013-02-13 | 中兴通讯股份有限公司 | Method and device for switching storage element and extension element on mobile terminal |
| CN108288441A (en) * | 2018-03-17 | 2018-07-17 | 广东迪艾生光电技术有限公司 | A kind of city lighting engineering control system for simulating SD card read-write system and its application |
| CN113706740A (en) * | 2021-08-27 | 2021-11-26 | 深圳市奥赛克科技有限公司 | Automobile data recorder with control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhuang Ruihai Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |