CN2567638Y - Multifunction read-write apparatus of computer - Google Patents
Multifunction read-write apparatus of computer Download PDFInfo
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- CN2567638Y CN2567638Y CN 02272252 CN02272252U CN2567638Y CN 2567638 Y CN2567638 Y CN 2567638Y CN 02272252 CN02272252 CN 02272252 CN 02272252 U CN02272252 U CN 02272252U CN 2567638 Y CN2567638 Y CN 2567638Y
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Abstract
The utility model relates to a multifunctional read-write device of a computer. The utility model comprises a USB-HUB controller, an expansion USB interface, a card reader control circuit which is connected with a serial bus of the USB-HUB controller via a USB port, and a CF card interface, an SM card interface, an MMC card interface, an SD card interface, a MemoryStick interface and a Micro Drive interface which are connected with the card reader control circuit. The utility model connected with the USB interface of a PC mainboard supports the card reading function of an IC card and supports all CPU cards and memory cards which conform to ISO 7816 specification, and the utility model can be used as a standard layout arranged out of a computer, and the utility model arranged at a traditional floppy drive position to connect with a PC computer as a whole. The utility model has the advantages of convenient operation, high transmission rate and low power consumption.
Description
Technical field
The utility model relates to device of computer input/output, and particularly a kind of computer multifunctional read-write equipment as the renewal product of computer floppy drive, is used to read and write the flash memory storage medium of multimedia digital equipment.
Background technology
Along with the high speed development of infotech, the popularizing of network and information, computer has become the indispensable instrument of people's working and learning.The continual renovation of system allows the accessory product also change thereupon, and a slow slightly beat just can become technical neck bottle, and the operation and the widespread use of restriction total system.
Memory device as floppy drive, is to carry out data storage in the computer, duplicate, preserve and externally carry out the main media of message exchange.Floppy drive does not have any variation so far as the most original computer storage products, in still more than ten years pattern all on speed on the capacity, makes computer not catch up with the development need of current number code product.Along with constantly advancing of IT wave, the various information that comprise literal, form, picture, sound, animation, image etc. are more and more abundanter, data capacity is also more and more huger, floppy drive (floppy disk) is as the removable storage medium of the first generation, its capacity is little, and speed has been the technology neck bottle of restriction high capacity, high-speed storage slowly.Select the memory device that a kind of capacity is big, speed fast, degree of safety is higher imperative.As ZIP driver, JAZ driver and MO dish.High-capacity storage such as ZIP, CLIK equipment has the storage space of vast capacity, has solved the not enough problem of capacity that floppy drive brings.But regrettably, do not have unified standard in these memory devices, can't carry out the random interchange between the information; And on the high side, for multimedia digital products such as digital camera, MP3, palm PCs, they can not be used widely.
At present, be active in the memory device of various in style, different medium in market, the flash media memory device is applied in the digital equipments such as PDA, MP3 player, digital camera, Digital Video in large quantities.The transmission interface of equipment such as hand-held device or digital camera has: serial ports, parallel port, USB11, IEEE1394 etc., transmission speed differs, the transmission mode difference.Also has the situation that many data mobile storages also exist interface to differ.
The flash media memory device mainly contains CF card (CompactFlash), SM card (Smart Memory), mmc card (MultiMedia Card), SD card (SecureDigital), Memory Stick, Micro Drive and USB Flash Disk on the market.Carry out message exchange between computer and the various digital equipments and will do complicated being connected, the driver of different digital equipments is installed, usually cause the conflict of computer resource, influence the normal use of computer.
Summary of the invention
In view of the prior art above shortcomings, the utility model proposes a kind of computer multifunctional read-write equipment, handshake interface with between unified various multimedia storage cards and the PC promotes the transmission speed between various multimedia digital equipment and the PC.
Computer multifunctional read-write equipment of the present utility model comprises: USB-HUB controller circuitry, at least one expanding USB interface and USB-HUB power control circuit, described expanding USB interface is received the corresponding universal serial bus of USB-HUB controller circuitry, and the output of USB-HUB controller circuitry links to each other with the USB interface of computer motherboard by plug;
The card reader control circuit is by a universal serial bus (DP1, DM1) connection of its USB port (USB-DP, USB-DM pin) with the USB-HUB controller circuitry; And,
Be connected in the following interface circuit that is subjected to its control of described card reader control circuit corresponding port: CF card (CompactFlash) interface circuit, SM card (Smart Memory) interface circuit, mmc card (MultiMedia Card) interface circuit and SD card (Secure Digital) interface circuit.Also comprise Memory Stick interface circuit and MicroDrive interface circuit, they are connected to described card reader control circuit corresponding port.
This computer multifunctional read-write equipment directly links to each other with the USB interface of computer motherboard, be installed in the floppy or CD drive position of computing machine, support the IC-card card-reading function, support to meet all CPU card and storage cards of ISO7816 standard, can be as the standard configuration of computer peripheral equipment.Shell sizes is identical with the standard floppy drive, is loaded on that traditional floppy drive position and PC computer are connected as a single entity on the cabinet, and is easy to operate, the transfer rate height, and power consumption is low.
The computer multifunctional read-write equipment, provide a kind of read-write CF card (CompactFlash), SM card (Smart Memory), mmc card (MultiMedia Card), SD card (SecureDigital), various storages such as Memory Stick, Micro Drive to snap into the signaling transfer point of usb protocol, with the USB mass-memory unit of the storage card standard of transferring into, the various main flow storage cards on the compatible market.Make the consumer can easily pass through the storage medium of various multimedia digital equipment such as multifunctional read-write equipment direct read digital camera, MP3, mobile phone, palm PC, carry out message exchanges such as image, data, music.
The computer multifunctional read-write equipment can be expanded 1 to 4 USB interface simultaneously.Can link to each other with the multimedia equipment of any USB1.1 of meeting, USB2.0 agreement, simple to operate, easy to use.
The computer multifunctional read-write equipment provides the communication interface of various multimedia storage cards and PC, promotes various multimedia digital equipment and the electric speed of linking up of individual.Various main flow storage cards on the read-write market are as CF card, SM card, mmc card, SD card, Memory Stick and MicroDrive card.
Description of drawings
Fig. 1 is the utility model functional-block diagram;
Fig. 2 is its card reader control circuit figure;
Fig. 3 is its CF card control circuit figure;
Fig. 4 is its this SM card control circuit figure;
Fig. 5 is its MMC, MS card control circuit figure;
Fig. 6 is its read write line part power control circuit reason figure;
Fig. 7 is its USB-HUB control circuit figure;
Fig. 8 is its expanding USB interface control circuit and USB-HUB part power supply diagram;
Fig. 9 is its exemplary embodiments structural representation.
Embodiment
Further describe below in conjunction with the embodiment accompanying drawing.
As shown in Figure 1, this computer multifunctional read-write equipment comprises: USB-HUB controller circuitry, some expanding USB interface circuit, USB-HUB part power control circuit, card reader control circuit, CF card (CompactFlash) interface circuit, SM card (Smart Memory) interface circuit, mmc card (MultiMedia Card) interface circuit, SD card (Secure Digital) interface circuit, Memory Stick interface circuit, Micro Drive interface circuit and card reader power control circuit etc.
Described expanding USB interface is received the corresponding universal serial bus of USB-HUB controller circuitry, CF card interface circuit, SM card interface circuit, mmc card interface circuit, SD card interface circuit, Memory Stick interface circuit and MicroDrive interface circuit are connected to described card reader control circuit corresponding port, and their read-write operation is controlled by the card reader control circuit; (DP1 DM1) connects the universal serial bus of card reader control circuit by its USB-DP, USB-DM pin and USB-HUB controller circuitry, and the output of USB-HUB controller circuitry links to each other with the USB interface of computer motherboard by plug, the realization data communication.
Fig. 2 is card reader control circuit figure, and it is made up of card reader control chip U1 and peripheral circuit, and U1 can adopt IC such as PL1006,8, the external crystal oscillating circuit of 9 pin, and 1,2,127,128 pin are the LED indicating circuit of corresponding card respectively.Mainly finish the read-write control of CF, SM, MMC, SD, Memory Stick, Micro Drive card; And by USB-DP, the DP1 of USB-DM pin and USB-HUB controller circuitry U3, data communication is finished in the connection of DM1 pin.
Fig. 3 CF card (CompactFlash) interface circuit is made up of connector CON2 and peripheral circuit, mainly finish the connection and the control of CF card, CF-PWR signal and Q2 finish the control of CF card power supply, address wire CFA0-CFA2, / CF-CE1 ,/CF-CE2 low level is finished the gating of CF card, read-write control line/CF-RD, / CF-WR low level is finished the read-write control of CF card, and data line CFD0-CFD15 finishes the transmission of parallel data.CF1CD1 in addition, CF1CD2 is that high level can be read and write CF I respectively, CF II card.
Fig. 4 SM card (Smart Memory) interface circuit is made up of connector CON1 and peripheral circuit, mainly finish the connection and the control of SM card, SM-PWR signal and Q1 finish the control of SM card power supply, FLH-SMCLE control line high level, / SMFCE control line low level is finished the SM card and is selected, read-write control line FLH-SMnRD, FLH-SMnWR finishes the read-write control of SM card, FLH-SMALE and data line FLHD0-SMD0 ~ FLHD7-SMD7 are bonded together and make address wire, read/write address in the SM card is controlled, and data line and SMnFWP line are finished the transmission of parallel data.
Fig. 5 mmc card (MultiMedia Card) interface circuit, form by connector CON3 and peripheral circuit, mainly finish the connection and the control of mmc card, MMC-PWR signal and Q4 finish the control of mmc card power supply, MMCCLK, MMCCMD clock, order control line are finished the read-write control of mmc card, and MMCDAT0 ~ MMCDAT3 data line is finished the transmission of serial data.
Memory Stick interface circuit is made up of connector CON4 and peripheral circuit, mainly finish the connection and the control of MS card, MS-PWR signal and Q5 finish SM card power supply control, clock line SCLK, enable the read-write control that control line BS finishes the MS card, and data line DIO finishes the transmission of serial data.
Fig. 6 card reader part power control circuit is made up of DC-DC transducer U2 and peripheral circuit, mainly finishes the conversion of DC-DC.Is the power source conversion of USB the required 3.3V voltage of circuit on the pcb board.
Fig. 7 USB-HUB controller circuitry is made up of HUB chip (U3) and peripheral circuit, and HUB chip (U3) can adopt chips such as GL650.35, the external crystal oscillating circuit of 35 pin is finished controller and Computer Data Communication by USB (universal serial bus) DP0, DM0.DP1-4, DM1-4 universal serial bus are finished the data communication between U3 and the expanding USB interface.When PWRENB1#-4# puts high level, finish selection to expanding USB interface.
Fig. 8 expanding USB interface circuit is made up of four-core socket J2, J3, J4, J5 and peripheral circuit, mainly finishes the connection of peripheral USB device.
USB-HUB part power control circuit is made up of switching tube Q5 (FND340), chip U4 (MIC2526-8), U5 (MIC2526-8) and peripheral circuit, the SELF high level drives the Q5 power-on, and U4, U5 output PWRENB1#-4# pin is to the selection of expanding USB interface power supply.U4, U5 possessed current control simultaneously, when over-current state appears in each road USB interface, fed back to control circuit U3 by FLG pin output low level through the OVRCUR pin, and control PWRENB pin transfers low level to and turns off this road USB interface.
The exemplary embodiments structure as shown in Figure 9.Mainly comprise shell and place the interior wiring board part of shell, the slot of each interface (or interface) is positioned at the front panel of shell.Each several part among Fig. 9 is: shell (20), wiring board (21), USB interface (22), slot I (23), slot II (24), slot III (25), USB interface (26), pilot lamp (27), connect the attachment plug (28) of computer main board.
The floppy drive of read write line shell sizes and standard is identical, and the slot of each interface (or interface) all is positioned at the front panel of shell, can be installed in floppy or CD drive position on the cabinet.Remove the drop front of floppy or CD drive mouth on the existing desk-top or vertical chassis during use, the computer multifunctional read-write equipment by installing, is fixed with the Luo silk, attachment plug (28) is received USB interface gets final product on the computer main board.Wherein attachment plug (28) comprises a power lead, two data lines and two ground wires.
Various main flow storage cards on the read-write market of this read write line are as CF card, SM card, mmc card, SD card, Memory Stick and MicroDrive card.
Operation instruction is as follows:
(1) the computer multifunctional read-write equipment has three slots and four USB interface
Slot I can insert Compact Flash Card, Micro Drive; One side of pin hole was inserted when slot I inserted CF card and Micro Drive, and faced up.
Slot II can insert Memory Stick, Multi-media Card, SecureDigital Card; When slot II can insert Memory Stick, Multi-media Card, Secure Digital Card, Smart Media Card, will there be a side of metallic contact to insert, and has one of metallic contact to face up.
Slot III Smart Media Card; To there be a side of metallic contact to insert during slot IIISmart Media Card, and has one of metallic contact to face down.
Four USB interface just are equivalent to the digital equipment that USB HUB can connect four band USB interface simultaneously.
(2), when read write line read-write power lights is bright, in the middle of expression information was reading and transmitting, plug-in card not was in order to avoid logarithmic code multimedia storage card and read write line cause damage.
Its important technological parameters is as follows
1. hardware requirement: the IBM PC of band USB interface and compatible with it desk-top, notes
This computer, or Apple Computers;
Operating system: Windows98 2000 xp Mac OS 9;
3. power supply: 3.3 (not comprising IBM Microdrive);
4. host interface: general-purpose serial bus USB standard 1.1;
5. working current:
A. read information: 95mA R.M.S. (not comprising IBM Microdrive)
B. writing information: 98mA R.M.S. (not comprising IBM Microdrive)
6. idle electric current: 30mA (not having card insertion state)
7. operating ambient temperature :-40 ℃--70 ℃
8. storage temperature :-50 ℃--80 ℃
Claims (5)
1, a kind of computer multifunctional read-write equipment is characterized in that comprising:
USB-HUB controller circuitry, at least one expanding USB interface and USB-HUB power control circuit, described expanding USB interface is received the corresponding universal serial bus of USB-HUB controller circuitry, and the output of USB-HUB controller circuitry links to each other with the USB interface of computer motherboard by plug;
The card reader control circuit is connected with a universal serial bus of USB-HUB controller circuitry by its USB port; And,
Be connected in the described card reader control circuit following interface circuit corresponding port and that be subjected to its control: CF card interface circuit, SM card interface circuit, mmc card interface circuit and SD card interface circuit.
2, according to the described computer multifunctional read-write equipment of claim 1, it is characterized in that: also comprise Memory Stick interface circuit and MicroDrive interface circuit, they are connected to described card reader control circuit corresponding port.
3, according to claim 1 or 2 described computer multifunctional read-write equipments, it is characterized in that: also be provided with a card reader power control circuit.
4, according to the described computer multifunctional read-write equipment of claim 1, it is characterized in that: the slot of described each interface (or interface) all is positioned at the front panel of shell.
5, according to the described computer multifunctional read-write equipment of claim 4, it is characterized in that: the read write line shell sizes is identical with the standard floppy drive, can be installed in floppy or CD drive position on the cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02272252 CN2567638Y (en) | 2002-08-01 | 2002-08-01 | Multifunction read-write apparatus of computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02272252 CN2567638Y (en) | 2002-08-01 | 2002-08-01 | Multifunction read-write apparatus of computer |
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| Publication Number | Publication Date |
|---|---|
| CN2567638Y true CN2567638Y (en) | 2003-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02272252 Expired - Fee Related CN2567638Y (en) | 2002-08-01 | 2002-08-01 | Multifunction read-write apparatus of computer |
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| Country | Link |
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| CN (1) | CN2567638Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006122453A1 (en) * | 2005-05-16 | 2006-11-23 | Otax Electronics (Shenzhen) Co., Ltd | A card read/write device for connecting a memory card with usb interface |
| CN1956265B (en) * | 2005-10-27 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Connectors |
| CN102163183A (en) * | 2010-02-23 | 2011-08-24 | 安国国际科技股份有限公司 | Computer peripheral device |
| CN105446431A (en) * | 2015-12-28 | 2016-03-30 | 天津浩丞恒通科技有限公司 | Multi-serial-port expansion board used for CPCI system |
| CN114546904A (en) * | 2021-12-27 | 2022-05-27 | 南京微智新科技有限公司 | Circuit for expanding screen memory capacity through USB (universal serial bus) to eMMC (enhanced multimedia card controller) |
-
2002
- 2002-08-01 CN CN 02272252 patent/CN2567638Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006122453A1 (en) * | 2005-05-16 | 2006-11-23 | Otax Electronics (Shenzhen) Co., Ltd | A card read/write device for connecting a memory card with usb interface |
| CN1956265B (en) * | 2005-10-27 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Connectors |
| CN102163183A (en) * | 2010-02-23 | 2011-08-24 | 安国国际科技股份有限公司 | Computer peripheral device |
| CN105446431A (en) * | 2015-12-28 | 2016-03-30 | 天津浩丞恒通科技有限公司 | Multi-serial-port expansion board used for CPCI system |
| CN114546904A (en) * | 2021-12-27 | 2022-05-27 | 南京微智新科技有限公司 | Circuit for expanding screen memory capacity through USB (universal serial bus) to eMMC (enhanced multimedia card controller) |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |