CN107463983A - Wireless U-disc circuit and wireless U-disc - Google Patents
Wireless U-disc circuit and wireless U-disc Download PDFInfo
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- CN107463983A CN107463983A CN201710858104.XA CN201710858104A CN107463983A CN 107463983 A CN107463983 A CN 107463983A CN 201710858104 A CN201710858104 A CN 201710858104A CN 107463983 A CN107463983 A CN 107463983A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000005611 electricity Effects 0.000 claims description 19
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- 101000891113 Homo sapiens T-cell acute lymphocytic leukemia protein 1 Proteins 0.000 claims description 5
- 101000702553 Schistosoma mansoni Antigen Sm21.7 Proteins 0.000 claims description 5
- 101000714192 Schistosoma mansoni Tegument antigen Proteins 0.000 claims description 5
- 102100040365 T-cell acute lymphocytic leukemia protein 1 Human genes 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 5
- 230000015654 memory Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
- G06K19/07732—Physical layout of the record carrier the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless U-disc circuit and wireless U-disc, the present invention is by using USB flash disk circuit and WiFi circuitry, the PIN code signal of the WiFi circuitry receiving terminal apparatus, according to the PIN code signal output modulated signal, the control data that the terminal device is sent is modulated to by control signal corresponding with the control data according to the modulated signal, and the control signal is sent to the USB flash disk circuit, the USB flash disk circuit obtains corresponding USB flash disk data-signal according to the control signal, USB flash disk data-signal is sent to the WiFi circuitry, the USB flash disk data signal modulation is radiofrequency signal by the WiFi circuitry, the radiofrequency signal is sent to the terminal device, with conveniently moving, portability is strong, immediately it is available, it is simple and safe, the characteristics of transmission rate is high.
Description
Technical field
The present invention relates to mobile technical field of memory, more particularly to a kind of wireless U-disc circuit and wireless U-disc.
Background technology
With the development of technology, the application of USB flash drive (USB flash disk, USB flash disk) is more and more extensive, and people are in day
Often life in need that USB flash disk be commonly used, to be plugged every time using process, and using when be frequently necessary to installation drive journey
Sequence, use is very troublesome, and USB flash disk is widely used in exchange files and the backup of desktop system, in USB flash disk profile increasingly compact, capacity
While increasingly expansion, its dependency degree to host computer system USB (Universal Serial Bus, USB) interface
All the time not changing, that is to say, that USB flash disk can only transmit data between two equipment for having USB interface, and for desktop system
Data transfer between mobile phone, and the data transfer between desktop system and tablet personal computer are helpless, and existing USB flash disk has
Be the wire transmission that data are realized by the type of change data connecting interface, or using dedicated data line carry out data biography
It is defeated, but this two classes mode has its limitation, and bad experience is brought to user, turns into consumption in mobile phone and tablet personal computer
When the carry-on smart machine of person, above mentioned problem becomes more prominent.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
It is an object of the invention to provide a kind of wireless U-disc circuit and wireless U-disc, allow users to enter line number whenever and wherever possible
According to transmission, solve the problems, such as that USB flash disk transmission data are not convenient enough.
To achieve the above object, the present invention provides a kind of wireless U-disc circuit：
The wireless U-disc circuit includes：USB flash disk circuit Z1 and WiFi circuitry Z2, the USB flash disk circuit Z1 and the WiFi circuitry
Z2 is electrically connected, the PIN code signal of the WiFi circuitry Z2 receiving terminal apparatus, according to the PIN code signal output modulated signal,
The control data that the terminal device is sent is modulated into control corresponding with the control data according to the modulated signal to believe
Number, and the control signal is sent and is obtained according to the control signal corresponding to the USB flash disk circuit Z1, the USB flash disk circuit Z1
USB flash disk data-signal, USB flash disk data-signal is sent to the WiFi circuitry Z2, the WiFi circuitry Z2 and believes the USB flash disk data
Number radiofrequency signal is modulated to, the radiofrequency signal is sent to the terminal device.
Preferably, the USB flash disk circuit Z1, is specifically included：USB flash disk governor circuit Z11, power circuit Z12 and storage circuit
Z13, the USB flash disk governor circuit Z11 electrically connect with the power circuit Z12, the USB flash disk governor circuit Z11 and the storage electricity
Road Z13 is electrically connected, and the power circuit Z12 electrically connects with the WiFi circuitry Z2.
Preferably, the USB flash disk governor circuit Z11 includes：USB flash disk main control chip U1, crystal oscillating circuit B1, master control reset electricity
Road Z110 and USB circuit Z111；The crystal oscillating circuit B1 by the port x TAL1 of the USB flash disk main control chip U1 and
XTAL2 is connected with the USB flash disk main control chip U1 respectively, the port that the USB circuit passes through the USB flash disk main control chip U1
DPLUS and DMINUS is connected with the USB flash disk main control chip U1 respectively, and the master control reset circuit Z110 passes through the USB flash disk master control
Chip U1 port RESET, TM1 and TM2 is connected with the USB flash disk main control chip U1 respectively.
Preferably, the power circuit Z12 includes：Charge management circuit Z121, charge protector Z122 and field-effect
Pipe Z123, the charge management circuit Z121 electrically connect with the charge protector Z122, and the FET Z123 passes through
The port OD and OC of the charge protector Z122 is connected with the charge protector Z122 respectively.
Preferably, the storage circuit Z13 includes non-volatile memory chip U4, data interaction circuit Z131 and storage control
Circuit Z132 processed.
Preferably, the WiFi circuitry Z2 includes：Voltage conversion circuit Z21 and WiFi transmission circuit Z22, the voltage turn
Circuit Z21 is changed to electrically connect with the WiFi transmission circuits Z22.
Preferably, the WiFi transmission circuits Z22 includes：WiFi transceiving chips U6 and radio circuit Z23, the WiFi receipts
Hair chip U6 electrically connects with radio circuit Z23.
Preferably, it is characterised in that the wireless U-disc circuit also includes：The wireless U-disc circuit also includes：Display screen
Circuit Z3, the display screen circuit Z3 electrically connect with the USB flash disk governor circuit Z11, and the display screen circuit Z3 is by the USB flash disk number
It is believed that number being modulated to screen display signal, the screen display signal is sent to display screen.
Preferably, the display screen circuit Z3, is specifically included：Display screen interface circuit Z31 and display backlight circuit
Z32, the display screen interface circuit Z31 electrically connect with the display backlight circuit Z32.
To achieve the above object, the present invention also provides a kind of wireless U-disc：
The wireless U-disc includes wireless U-disc circuit as described above.
The present invention is by using USB flash disk circuit and WiFi circuitry, the PIN code signal of the WiFi circuitry receiving terminal apparatus,
According to the PIN code signal output modulated signal, the control data for being sent the terminal device according to the modulated signal is adjusted
Control signal corresponding with the control data is made as, and the control signal is sent to the USB flash disk circuit, the USB flash disk electricity
Road obtains corresponding USB flash disk data-signal according to the control signal, and USB flash disk data-signal is sent to the WiFi circuitry, described
The USB flash disk data signal modulation is radiofrequency signal by WiFi circuitry, and the radiofrequency signal is sent to the terminal device, had
The characteristics of conveniently moving, portability is strong, immediately available, simple and safe, and transmission rate is high.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of wireless U-disc circuit of the present invention；
Fig. 2 is the USB flash disk governor circuit structural representation of wireless U-disc circuit of the present invention；
Fig. 3 is the circuit construction of electric power schematic diagram of wireless U-disc circuit of the present invention；
Fig. 4 is the memory circuit structure schematic diagram of wireless U-disc circuit of the present invention；
Fig. 5 is the WiFi circuitry structural representation of wireless U-disc circuit of the present invention；
Fig. 6 is the display screen electrical block diagram of wireless U-disc circuit of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
A kind of wireless U-disc circuit in the present embodiment, the wireless U-disc circuit are with wireless network (WIreless-
Fidelity, WiFi) communication function USB flash disk circuit, the wireless U-disc circuit includes：USB flash disk circuit Z1 and WiFi circuitry Z2, institute
State USB flash disk circuit Z1 to electrically connect with the WiFi circuitry Z2, the PIN of the WiFi circuitry Z2 receiving terminal apparatus
(personal identification number, PIN) code signal, according to the PIN code signal output modulated signal, according to
The control data that the terminal device is sent is modulated to control signal corresponding with the control data by the modulated signal, and
The control signal is sent to the USB flash disk circuit Z1, the USB flash disk circuit Z1 corresponding USB flash disk is obtained according to the control signal
Data-signal, USB flash disk data-signal is sent to the WiFi circuitry Z2, the WiFi circuitry Z2 and adjusts the USB flash disk data-signal
Radiofrequency signal is made as, the radiofrequency signal is sent to the terminal device.
Whether the PIN code signal that the present embodiment is sent by WiFi circuitry Z2 checking users in terminal device, determine PIN code
Match with the local PIN code in wireless U-disc, be modulated to the control data that the terminal device is sent and the control if matching
Control signal corresponding to data processed, USB flash disk data corresponding with control signal are obtained by USB flash disk circuit Z1, pass through radio circuit Z3
The USB flash disk data are sent to the transmission that USB flash disk data are completed to the terminal device.
In order to handle signal, whole wireless U-disc circuit is controlled, further, the USB flash disk circuit Z1,
Specifically include：USB flash disk governor circuit Z11, power circuit Z12 and storage circuit Z13, the USB flash disk governor circuit Z11 and the power supply
Circuit Z12 is electrically connected, and the USB flash disk governor circuit Z11 electrically connects with the storage circuit Z13, the power circuit Z12 with it is described
WiFi circuitry Z2 is electrically connected.
In order to be more accurately controlled to wireless U-disc circuit, frequency of oscillation, further, the USB flash disk master control are produced
Circuit Z11 includes：USB flash disk main control chip U1, crystal oscillating circuit B1, master control reset circuit Z110 and USB circuit Z111；Institute
State crystal oscillating circuit B1 by external crystal oscillator the port x TAL1 and XTAL2 of the USB flash disk main control chip U1 respectively with the USB flash disk
Main control chip U1 is connected, the USB circuit by the serial data transmission port DPLUS of the USB flash disk main control chip U1 and
DMINUS is connected with the USB flash disk main control chip U1 respectively, and the master control reset circuit Z110 passes through the USB flash disk main control chip U1's
Port RESET, TM1 and TM2 are connected with the USB flash disk main control chip U1 respectively.
Power supply is provided for each circuit in wireless U-disc circuit, makes wireless U-disc normal operation in no external power supply, enters one
Step, the power circuit Z12 includes：Charge management circuit Z121, charge protector Z122 and FET Z123, it is described
Charge management circuit Z121 electrically connects with the charge protector Z122, and the FET Z123 passes through the charge protection
Circuit Z122 port OD and OC is connected with the charge protector Z122 respectively.
In order to effectively store the data message in wireless U-disc, further, the storage circuit Z13 includes non-volatile
Storage chip U4, data interaction circuit Z131 and storage control circuit Z132.
In order to realize WiFi connections whenever and wherever possible, further, the WiFi circuitry Z2 includes：Voltage conversion circuit Z21
Electrically connected with WiFi transmission circuits Z22, the voltage conversion circuit Z21 with the WiFi transmission circuits Z22.
In order that wireless U-disc data are transmitted rapidly, radio circuit complexity is reduced, further, the WiFi transmitting-receivings electricity
Road Z22 includes：WiFi transceiving chips U6 and radio circuit Z23, the WiFi transceiving chips U6 electrically connect with radio circuit Z23.
In order to understand the progress of data transfer and state at any time, further, the wireless U-disc circuit also includes：
Display screen circuit Z3, the display screen circuit Z3 electrically connect with the USB flash disk governor circuit Z11, and the display screen circuit Z3 is by institute
It is screen display signal to state USB flash disk data signal modulation, and the screen display signal is sent to display screen.
In order to provide a kind of strong antijamming capability and circuit low in energy consumption, further, the display screen circuit Z3, specifically
Including：Display screen interface circuit Z31 and display backlight circuit Z32, the display screen interface circuit Z31 carry on the back with the display screen
Optical circuit Z32 is electrically connected.
Fig. 1 is the composition schematic diagram of wireless U-disc circuit of the present invention；
As shown in figure 1, the wireless U-disc circuit includes：USB flash disk circuit Z1, WiFi circuitry Z2, the USB flash disk circuit Z1 and institute
WiFi circuitry Z2 electrical connections are stated, the PIN code signal of the WiFi circuitry Z2 receiving terminal apparatus is defeated according to the PIN code signal
Go out modulated signal, be modulated to the control data that the terminal device is sent and the control data pair according to the modulated signal
The control signal answered, and the control signal is sent to the USB flash disk circuit Z1, the USB flash disk circuit Z1 and believed according to the control
Number corresponding USB flash disk data-signal is obtained, USB flash disk data-signal is sent to the WiFi circuitry Z2, the WiFi circuitry Z2 is by institute
It is radiofrequency signal to state USB flash disk data signal modulation, and the radiofrequency signal is sent to the terminal device.
It is understood that the PIN code signal sent by WiFi circuitry Z2 checking users in terminal device, determines PIN
Whether code is matched with the local PIN code in wireless U-disc, and the control data for sending the terminal device if the match is successful is modulated
For control signal corresponding with the control data, corresponding USB flash disk data are obtained according to the control signal by USB flash disk circuit Z1
Signal, USB flash disk data-signal is sent to the WiFi circuitry Z2, adjusted the USB flash disk data-signal by the WiFi circuitry Z2
Radiofrequency signal is made as, the radiofrequency signal is sent to the terminal device.
In the specific implementation, a PIN code can be set when each wireless U-disc is produced and dispatched from the factory, when needs enter with the USB flash disk
It can be verified during row wireless connection by PIN code, increase the security of wireless U-disc, be set by WiFi circuitry Z2 with terminal
It is standby to establish wireless connection, by the USB flash disk data signal modulation it is radiofrequency signal by the WiFi circuitry Z2, by corresponding radio frequency
Signal is transmitted with certain predeterminated frequency.
The present invention is by using USB flash disk circuit and WiFi circuitry, the PIN code signal of the WiFi circuitry receiving terminal apparatus,
According to the PIN code signal output modulated signal, the control data for being sent the terminal device according to the modulated signal is adjusted
Control signal corresponding with the control data is made as, and the control signal is sent to the USB flash disk circuit, the USB flash disk electricity
Road obtains corresponding USB flash disk data-signal according to the control signal, and USB flash disk data-signal is sent to the WiFi circuitry, described
The USB flash disk data signal modulation is radiofrequency signal by WiFi circuitry, and the radiofrequency signal is sent to the terminal device, had
The characteristics of conveniently moving, portability is strong, immediately available, simple and safe, and transmission rate is high.
Further, the USB flash disk circuit Z1, is specifically included：USB flash disk governor circuit Z11, power circuit Z12 and storage circuit
Z13, the USB flash disk governor circuit Z11 electrically connect with the power circuit Z12, the USB flash disk governor circuit Z11 and the storage electricity
Road Z13 is electrically connected, and the power circuit Z12 electrically connects with the WiFi circuitry Z2 and the radio circuit Z3 respectively.
Based on the wireless U-disc circuit shown in Fig. 1, the USB flash disk governor circuit of wireless U-disc circuit of the present invention is proposed, Fig. 2 is this hair
The USB flash disk governor circuit structural representation of bright wireless U-disc circuit；
As shown in Fig. 2 the USB flash disk governor circuit Z11 includes：USB flash disk main control chip U1, crystal oscillating circuit B1, master control are multiple
Position circuit Z110 and USB circuit Z111；The external crystal oscillator that the crystal oscillating circuit B1 passes through the USB flash disk main control chip U1
Port x TAL1 and XTAL2 are connected with the USB flash disk main control chip U1 respectively, and the USB circuit passes through the USB flash disk master control core
Piece U1 serial data transmission port DPLUS and DMINUS is connected with the USB flash disk main control chip U1 respectively, and the master control resets electricity
Road Z110 by reseting port RESET, single antenna port TM1 and the TM2 of the USB flash disk main control chip U1 respectively with the USB flash disk master
Control chip U1 is connected.
It should be noted that the USB flash disk main control chip U1 can use the low slim pin package of quad flat 48
IC1114, naturally it is also possible to be the chip that there is same or similar function using other, the present embodiment is not any limitation as to this, institute
The data/address bus port SM-xx for stating USB flash disk main control chip U1 is connected with the storage circuit Z13 leads, and these ports are mainly used
In the operation movement control such as " reading and writing " to the storage circuit Z13, wherein external storage circuit Z13 data/address bus
Port SMD0 to SMD7 respectively with the SMD0 of non-volatile memory chip U4 in the storage circuit Z13 to SMD7 data bus terminals
Data are transmitted and read and write by the corresponding connection of mouth.
It is understood that external crystal oscillator ports of the crystal oscillating circuit B1 by the USB flash disk main control chip U1
XTAL1 and XTAL2 is connected with the USB flash disk main control chip U1 respectively, the external crystal oscillator port x TAL1 of the USB flash disk main control chip U1
And XTAL2 is respectively the input and output end of the crystal oscillating circuit B1, with crystal oscillator Y1, resistance R9, electric capacity C4 and electric capacity
C5 collectively constitutes crystal oscillator, the reference oscillation source as the USB flash disk main control chip U1.
It should be appreciated that reseting ports of the master control reset circuit Z110 by the USB flash disk main control chip U1
RESET, single antenna port TM1 and TM2 are connected with the USB flash disk main control chip U1 respectively, and port RESET is the USB flash disk master control core
Piece U1 reset terminal, the master control reset circuit Z110 is formed with resistance R10, resistance R11, resistance R12 and electric capacity C6；When wireless
When USB flash disk is run, power supply VCC is charged by resistance R10 to electric capacity C6, because electric capacity both end voltage can not be mutated, that is, forms one
Low level pulse is added to port RESET, resets the USB flash disk main control chip U1 and is in original state, when terminal voltage on electric capacity C6
Continue to rise, during more than reset threshold level, the USB flash disk main control chip U1 releases reset state, and circuit starts normal work, institute
Reseting port RESET can be passed through when phenomena such as disorderly occurs to crash for the wireless U-disc by stating master control reset circuit Z110
Shorted to earth is resetted, and WiFi circuitry is recovered normal；
It should be noted that serial data transmission ends of the USB circuit Z111 by the USB flash disk main control chip U1
Mouth DPLUS and DMINUS is connected with the USB flash disk main control chip U1 respectively, and serial data transmission port DPLUS and DMINUS are used for
The data transfer of the USB circuit Z111, with four core interface JK, resistance R1, resistance R2, resistance R3, resistance R4, resistance
R5, electric capacity C1, electric capacity C2 and electric capacity C3 form the USB circuit Z111, and four core interface JK 2 pin and 3 pin pass through respectively
Resistance R1 and resistance R2 is connected with the serial data transmission port DPLUS and DMINUS of the USB flash disk main control chip U1, filtering port
The effect that FILTER connects electric capacity C3 and four core interface JK 2 pin and 3 pin shunt-wound capacitance C1 and electric capacity C2 over the ground over the ground is to eliminate
Noise in control signal and data are filtered, when the power circuit Z12 of wireless U-disc does not provide enough power supplys, outside
Portion's SVUSB voltages provide voltage after resistance R5, to the wireless U-disc circuit.
In the specific implementation, can work as charge management circuit Z121 and the charge protection described in power circuit Z12
When battery in circuit Z122 does not have enough electricity offer wireless U-disc circuit normal works, the USB circuit can be passed through
The four external other equipments of core interface JK in Z111 are to provide outside SVUSB voltages, by resistance R5, to wireless U-disc electricity
Road provides voltage.
Based on the USB flash disk governor circuit shown in Fig. 2, the power circuit of wireless U-disc circuit of the present invention is proposed, Fig. 3 is the present invention
The circuit construction of electric power schematic diagram of wireless U-disc circuit；
As shown in figure 3, the power circuit Z12 includes：Charge management circuit Z121, charge protector Z122 and field effect
Should pipe Z123, the charge management circuit Z121 electrically connects with the charge protector Z122, and the FET Z123 leads to
Cross the discharge prevention port OD and charge protection port OC of the charge protector Z122 respectively with the charge protector
Z122 is connected.
It should be noted that the charge management circuit Z121 can include charging management chip U2, resistance R13, resistance
R14, resistance R15, electric capacity C7, electric capacity C8, electric capacity C9 and diode D1 compositions, the charging management chip U2 can be chip
CN3063, naturally it is also possible to be the chip that there is same or similar function using other, the present embodiment is not any limitation as to this, core
Piece CN3063 charging termination instruction port DONE is the charging done state indication end of open-drain output, and charged state indicates
Port CHRG is the charged state indication end of open-drain output, and resistance R13 electric capacity C7 earths, at the end of charging,
Charging termination instruction port DONE moves low level to by internal switch, represents that charging is over, termination instruction end of otherwise charging
Mouth DONE is in high-impedance state；When charger charges to battery, charged state instruction port CHRG moves low electricity to by internal switch
It is flat, represent that charging is carried out, otherwise charged state instruction port CHRG is in high-impedance state, control source port VIN and two poles
Pipe D1 negative pole is connected with electric capacity C8, and VIN is input voltage input, is connected with the working power VCC of internal circuit, works as voltage
When input port VIN voltage is less than 20mV, chip CN3063 enters the sleep pattern of low-power consumption, now battery terminal connections BAT
Electric current be less than 3uA, battery terminal connections mouth BAT is battery terminal connections, and be connected ground connection with electric capacity C9, charging monitoring port ISET be
Constant-current charge electric current is set and charging current monitoring side, can be to filling to ground terminal from charging monitoring port ISET connection resistance R14
Electric current is programmed, and battery temperature detection port TEMP is battery temperature detection input, and battery voltage detection port FB is
Battery voltage detection input, connection resistance R15 meet BATT+ and are connected with battery BT positive pole, and battery BT can be lithium battery, when
Other batteries that there is charging and discharging to act on so are can also be, the present embodiment is not any limitation as to this.
It is understood that the charge protector Z122 can include charge protection chip U3, electric capacity C10, battery
BT, resistance R16 and resistance R17, the charge protection chip U3 can be chip DWO1, can also be chip 312F, certainly
Can be the chip that there is same or similar function using other, the present embodiment is not any limitation as to this, the charge protection core
Piece U3 positive supply input port VDD is that positive supply input pass through resistance R16 connection battery BT positive poles, battery BT negative pole and
It is negative supply input that electric capacity C10, which is connected in parallel negative supply input port VSS, port VSS, and short-circuit detecting port CSI is excessively stream
Short-circuit detecting end, outer meeting resistance R17 ground connection, discharge prevention port OD is discharge prevention actuating station, the G poles with FET Z123
It is connected, the FET Z123 can be double MOS power tubes, can be 8205A, naturally it is also possible to had using other identical
Or the FET of identity function, the present embodiment are not any limitation as to this, charge protection port OC is charge protection actuating station, with
The G of the FET Z123 is extremely connected；
It should be appreciated that when battery BT voltage is between 2.5V-4.3V, the electric discharge of the charge protection chip U3
Protection port OD and charge protection port OC exports high level, and equivalent to supply voltage, short-circuit detecting port CSI voltages are
0V, now the FET Z123 is in the conduction state, due to the conducting resistance very little of the FET Z123, equivalent to
D, S interpolars are led directly to, and the charge protector Z122 has voltage output.
Based on the USB flash disk governor circuit shown in Fig. 2, the storage circuit of wireless U-disc circuit of the present invention is proposed, Fig. 4 is the present invention
The memory circuit structure schematic diagram of wireless U-disc circuit；
As shown in figure 4, the storage circuit Z13 includes non-volatile memory chip U4, data interaction circuit Z131 and deposited
Store up control circuit Z132.
It should be noted that non-volatile memory chip U4 can be flash memory chip, naturally it is also possible to be to use it
He has the chip of same or similar function, and the present embodiment is not any limitation as to this, described in the data interaction circuit Z131
Non-volatile memory chip U4 port SMD0-SMD7 is correspondingly connected to the corresponding ports of USB flash disk main control chip U1, mutually enters
Row data transfer and exchange, positive supply input port VCC corresponding to pin 37 and 36 and negative supply input port VSS shunt capacitances
C12 and electric capacity C13 ground connection；The correspondence of pin 12 and 13 of non-volatile memory chip U4 described in the storage control circuit Z132
Positive supply input port VCC and negative supply input port shunt capacitance C11 ground connection, data transmission port SM-CLE, SM-ALE,
Corresponding ports of the SM-WE and SM-WP respectively with the USB flash disk main control chip U1 is connected, non-volatile memory chip U4 chip choosing
Select port CE and read enable port RE and pass through resistance R21, R22 port SM-RDY and core with the USB flash disk main control chip U1 respectively
The SM-EN1 connections of piece selection port, non-volatile memory chip U4 reading control port R/B connect by parallel resistance R19 and R20
Power supply VCC is connected with the reading enable port SM-RE of the USB flash disk main control chip U1, non-volatile memory chip U4 port SE warps
Cross parallel resistance R18 ground connection；
It is understood that the port SM-CLE latches end for instruction, instruction input enables, will when CLE is high level
Instruction is latched, and SM-ALE is address latch end, and address input is enabled, and when ALE is high level, address latch, SM-EN1 is chip
Select end, to enable in chip selection, low level is effective, and SM-R/B and SM-RDY are respectively reading control and busy control terminal, low
Level is effective, and for SM-RE to read Enable Pin, low level is effective, and SM-WE is the enabled control terminal of write-in, enabled input is write, for controlling
The instruction write-in of I/O mouths processed, low level is effective, and SM-WP is write-protect end, and low level is effective, when WP is low level, inside it
High level generator will reset.
Based on the wireless U-disc circuit shown in Fig. 1, the WiFi circuitry of wireless U-disc circuit of the present invention is proposed, Fig. 5 is the present invention
The WiFi circuitry structural representation of wireless U-disc circuit；
As shown in figure 5, the WiFi circuitry Z2 includes：Voltage conversion circuit Z21 and WiFi transmission circuit Z22, the electricity
Voltage conversion circuit Z21 electrically connects with the WiFi transmission circuits Z22.
Further, the WiFi transmission circuits Z22 includes：WiFi transceiving chips U6 and radio circuit Z23, the WiFi
Transceiving chip U6 electrically connects with radio circuit Z23.
It should be noted that the voltage conversion circuit Z21 includes power supply chip U5, electric capacity C14, electric capacity C15, electric capacity
C16 and electric capacity C17, the power supply chip U5 can be chip AMS1117, naturally it is also possible to be to have identical or phase using other
Like the chip of function, the present embodiment is not any limitation as to this, input Vin and electric capacity C14 and the electric capacity of the power supply chip U5
C15 access input voltages in parallel, the earth terminal GND ground connection of the power supply chip U5, the output end vo ut of the power supply chip U5
It is parallel with output voltage after electric capacity C16 and electric capacity C17；By electric capacity C20, electric capacity C21, electric capacity C22, electric capacity C23, electric capacity C24, electricity
Hold C25, electric capacity C26, electric capacity C27, electric capacity C28, electric capacity C29 and antenna T1 composition radio circuit Z23,
It is understood that the WiFi transmission circuits Z22 includes WiFi transceiving chips U6, resistance R23, resistance R24, electricity
Hinder R25, resistance R26, resistance R27, electric capacity C19, electric capacity C20, electric capacity C21, electric capacity C22, electric capacity C23, electric capacity C24, electric capacity
C25, electric capacity C26, electric capacity C27, electric capacity C28, electric capacity C29, NPN type triode Q1, p-type metal-oxide-semiconductor Q2 and antenna T1；The WiFi
Transceiving chip U6 port D is data terminal, and resistance R24 first end and the Enable Pin POW-EN of the USB flash disk main control chip U1 connect
Connect, resistance R25 first end and the second end correspond to connecting resistance R24 first end and ground, electric capacity C19 first end and two port
Connecting resistance R24 the second end and ground is answered, NPN type triode Q1 base stage, emitter and collector correspond to the second of connecting resistance R24
End, and institute p-type metal-oxide-semiconductor Q2 grid, resistance R23 first end and the second end correspondingly connect power vd D's and p-type metal-oxide-semiconductor Q2
Grid, p-type metal-oxide-semiconductor Q2 drain electrode and source electrode correspondingly meet the power pins end RF-POW of the WiFi transceiving chips U6, electric capacity C20
First end and the second end correspondingly connect the WiFi transceiving chips U6 first transmitting-receiving pin RF-N and second transmitting-receiving pin RF-P,
Electric capacity C21 first end and the second end correspondingly connect the first transmitting-receiving pin RF-N's and electric capacity C22 of the WiFi transceiving chips U6
First end, the first end of the electric capacity C23 and the second end correspondingly meet the second transmitting-receiving pin RF-P of the WiFi transceiving chips U6
With electric capacity C22 the second end, resistance R26 first end and the second end correspondingly connect electric capacity C21 the second end and ground, the 6th electricity
Hold C6 first end and the second end correspondingly connects the second end and ground of the 3rd electric capacity C3, electric capacity C25 first end and the second end
The first end at corresponding the second end and electric capacity C27 for meeting electric capacity C21, resistance R27 first end and the second end correspondingly connect electric capacity C25's
Second end and electric capacity C24 first end, electric capacity C26 first end and the second end correspondingly connect electric capacity C25 first end and ground, electric capacity
C27 first end and the second end correspondingly connect electric capacity C26 first end and electric capacity C29 first end, electric capacity C28 first end and
Two port should meet electric capacity the C27 end of ground two and ground, electric capacity C29 the second termination antenna T1.
It should be appreciated that the operation principle of the WiFi transmission circuits Z22 is：User triggers the enabled letter of high potential
Number, during the WiFi transmission circuits Z22 accesses the enable signal from Enable Pin POW-EN, NPN type triode Q1 and p-type
Metal-oxide-semiconductor Q2 is sequentially turned on, the power pins RF-POW of WiFi transceiving chips U6 access power supply signal, and the power supply signal can be with
By power supply by conducting and p-type metal-oxide-semiconductor Q2 outputs, so that the WiFi transmission circuits Z22 works on power；In WiFi electricity
The PIN code signal of road Z2 receiving terminal apparatus, by the PIN code signal of terminal device compared with local PIN code, if identical
For the WiFi circuitry Z2 according to the PIN code signal output modulated signal, the WiFi transceiving chips U6 receives the modulation letter
After number, the control data of the terminal device transmission, the control that the terminal device is sent are received according to the modulated signal
Data are modulated to control signal corresponding with the control data, and the control signal is sent to the USB flash disk circuit Z1, institute
State USB flash disk circuit Z1 and corresponding USB flash disk data-signal is obtained according to the control signal, the WiFi circuitry Z2 is to the USB flash disk data
Signal is coupled to receive, and after the WiFi circuitry Z2 receives the USB flash disk data-signal, energization voltage conversion circuit Z21 will be changed
Data-signal afterwards is sent to the WiFi transmission circuits Z22, WiFi transceiving chips U6 described in the WiFi transmission circuits Z22
It is radiofrequency signal by the USB flash disk data signal modulation, is sent the radiofrequency signal to the end by the radio circuit Z23
End equipment, complete data transfer.
Based on the wireless U-disc circuit shown in Fig. 1, the display screen circuit of wireless U-disc circuit of the present invention is proposed, Fig. 6 is this hair
The display screen electrical block diagram of bright wireless U-disc circuit；
As shown in fig. 6, the display screen circuit Z3 electrically connects with the USB flash disk governor circuit Z11, the display screen circuit Z3
It is screen display signal by the USB flash disk data signal modulation, the screen display signal is sent to display screen.
Further, the display screen circuit Z3, is specifically included：Display screen interface circuit Z31 and display backlight circuit
Z32, the display screen interface circuit Z31 electrically connect with the display backlight circuit Z32.
It should be noted that the display backlight circuit Z32 includes electric capacity C30, electric capacity C31, electric capacity C32, electric capacity
C33, inductance L, switching transistor V1, voltage-regulator diode V2, the first paster integrated chip U8, resistance R28, the first light emitting diode
LD1 and the second light emitting diode LD2, electric capacity C30 are connected with the BATT+ ends of the charge protector Z122, switching transistor
V1 grid is connected with the first paster integrated chip U8 level compatible port EXT, and switching transistor V1 source electrode passes through inductance L
It is connected with battery BT positive pole, switching transistor V1 grounded drain, the electrode input end of the first paster integrated chip U8
Mouthful VCC is grounded by electric capacity C31, switching transistor V1 source electrode by voltage-regulator diode V2 and electric capacity C32 series circuit with
The FB ends connection of the first paster integrated chip U8, the FB ends of the first paster integrated chip U8 are grounded by resistance R28,
Electric capacity C33 is in parallel with electric capacity C32 and resistance R28 series circuit, the first light emitting diode LD1 and described second luminous two
Pole pipe LD2 series circuit is in parallel with electric capacity C33；
It is understood that the operation principle of the display backlight circuit Z32 is the charge protector Z122
BATT+ ends provide power supply to the display backlight circuit Z32, and electric capacity C30 is filtered to the voltage at BATT+ ends, the first patch
Piece integrated chip U8 EXT ends control its break-make by controlling switch transistor V1 grid, so as to adjust output voltage
Dutycycle adjusts voltage, and wherein electric capacity C32 and electric capacity C33 be used to make the first light emitting diode LD1 and the second light-emitting diodes
Voltage on pipe LD2 turns into smooth DC voltage, improves stability.
It should be noted that the display screen interface circuit Z31, which includes the display screen interface circuit, includes the second paster
Integrated chip U9, the 3rd paster integrated chip U10, the 4th paster integrated chip U11 and the 5th paster integrated chip U12；It is described
Second paster integrated chip U9 is connected with the 3rd paster integrated chip U10 and the 4th paster integrated chip U11 respectively, and the described 5th
Paster integrated chip U12 is connected with the 3rd paster integrated chip U10 and the 4th paster integrated chip U11 respectively, the 3rd patch
Can be that multiple ports are interconnected between piece integrated chip U10 and the 5th paster integrated chip U12, the 3rd paster
Can be that multiple ports are interconnected between integrated chip U10 and the second paster integrated chip U9, the 4th patch
Piece integrated chip U11 and the 5th paster integrated chip U12 can be that multiple ports are interconnected, and the 4th paster integrates
Chip U11 and can be that multiple ports are interconnected between the second paster integrated chip U9；
Lead to it is understood that the operation principle of the display screen interface circuit Z31 is the display screen interface circuit Z31
The signal transacting for crossing the second paster integrated power chips U9 enters the 3rd paster integrated chip U10 and the integrated core of the 4th paster later
Piece U11, because the 3rd paster integrated chip U10 and the 4th paster integrated chip U11 can be that EMI filtering chips play filtering
Effect, can improve the antijamming capability of circuit, and last signal is entered in the 4th paster integrated chip U11.
In the specific implementation, the display screen circuit Z3 is electrically connected by port LED with the USB flash disk governor circuit Z11, institute
State USB flash disk governor circuit Z11 to send USB flash disk data-signal to the WiFi circuitry Z2, in the WiFi circuitry Z2 by the USB flash disk
Data signal modulation is radiofrequency signal, when the radiofrequency signal is sent to the terminal device, timely Monitoring Data transmission
State, that is, transmit the percentage of data, and whether transmission is normal, and if there is loss of data or repeat the states such as transmission, it is corresponding anti-
Status signal corresponding to feedback, the USB flash disk governor circuit send status signal to the display screen circuit Z3, the display screen electricity
Road Z3 is shown after status signal is handled in display screen.
The present invention is by using USB flash disk circuit and WiFi circuitry, the PIN code signal of the WiFi circuitry receiving terminal apparatus,
According to the PIN code signal output modulated signal, the control data for being sent the terminal device according to the modulated signal is adjusted
Control signal corresponding with the control data is made as, and the control signal is sent to the USB flash disk circuit, the USB flash disk electricity
Road obtains corresponding USB flash disk data-signal according to the control signal, and USB flash disk data-signal is sent to the WiFi circuitry, described
The USB flash disk data signal modulation is radiofrequency signal by WiFi circuitry, and the radiofrequency signal is sent to the terminal device, had
The characteristics of conveniently moving, portability is strong, immediately available, simple and safe, and transmission rate is high.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvement can also be made, these improvement also should be regarded as the guarantor of the present invention
Protect scope.
Claims (10)
1. a kind of wireless U-disc circuit, it is characterised in that the wireless U-disc circuit includes：USB flash disk circuit Z1 and WiFi circuitry Z2, institute
State USB flash disk circuit Z1 to electrically connect with the WiFi circuitry Z2, the PIN code signal of the WiFi circuitry Z2 receiving terminal apparatus, according to
The PIN code signal output modulated signal, the control data that the terminal device is sent is modulated to according to the modulated signal
Control signal corresponding with the control data, and the control signal is sent to the USB flash disk circuit Z1, the USB flash disk circuit
Z1 obtains corresponding USB flash disk data-signal according to the control signal, and USB flash disk data-signal is sent to the WiFi circuitry Z2, institute
It is radiofrequency signal that WiFi circuitry Z2, which is stated, by the USB flash disk data signal modulation, and the radiofrequency signal is sent to the terminal device.
2. wireless U-disc circuit as claimed in claim 1, it is characterised in that the USB flash disk circuit Z1, specifically include：USB flash disk master control
Circuit Z11, power circuit Z12 and storage circuit Z13, the USB flash disk governor circuit Z11 electrically connect with the power circuit Z12, institute
State USB flash disk governor circuit Z11 to electrically connect with the storage circuit Z13, the power circuit Z12 is electrically connected with the WiFi circuitry Z2
Connect.
3. wireless U-disc circuit as claimed in claim 2, it is characterised in that the USB flash disk governor circuit Z11 includes：USB flash disk master control
Chip U1, crystal oscillating circuit B1, master control reset circuit Z110 and USB circuit Z111；The crystal oscillating circuit B1 leads to
The port x TAL1 and XTAL2 for crossing the USB flash disk main control chip U1 are connected with the USB flash disk main control chip U1 respectively, the USB
Circuit is connected with the USB flash disk main control chip U1 respectively by the port DPLUS and DMINUS of the USB flash disk main control chip U1, described
Master control reset circuit Z110 by port RESET, TM1 and TM2 of the USB flash disk main control chip U1 respectively with the USB flash disk master control core
Piece U1 is connected.
4. wireless U-disc circuit as claimed in claim 2, it is characterised in that the power circuit Z12 includes：Charge Management electricity
Road Z121, charge protector Z122 and FET Z123, the charge management circuit Z121 and the charge protector
Z122 is electrically connected, the FET Z123 by the port OD and OC of the charge protector Z122 respectively with the charging
Protection circuit Z122 is connected.
5. wireless U-disc circuit as claimed in claim 2, it is characterised in that the storage circuit Z13 includes non-volatile memories
Chip U4, data interaction circuit Z131 and storage control circuit Z132.
6. the wireless U-disc circuit as any one of claim 1-5, it is characterised in that the WiFi circuitry Z2 includes：Electricity
Voltage conversion circuit Z21 and WiFi transmission circuit Z22, the voltage conversion circuit Z21 and the WiFi transmission circuits Z22 are electrically connected
Connect.
7. wireless U-disc circuit as claimed in claim 6, it is characterised in that the WiFi transmission circuits Z22 includes：WiFi is received
Chip U6 and radio circuit Z23 is sent out, the WiFi transceiving chips U6 electrically connects with radio circuit Z23.
8. the wireless U-disc circuit as any one of claim 1-5, it is characterised in that the wireless U-disc circuit also wraps
Include：Display screen circuit Z3, the display screen circuit Z3 electrically connect with the USB flash disk governor circuit Z11, and the display screen circuit Z3 will
The USB flash disk data signal modulation is screen display signal, and the screen display signal is sent to display screen.
9. wireless U-disc circuit as claimed in claim 8, it is characterised in that the display screen circuit Z3, specifically include：Display
Shield interface circuit Z31 and display backlight circuit Z32, the display screen interface circuit Z31 and the display backlight circuit Z32
Electrical connection.
10. a kind of wireless U-disc, it is characterised in that the wireless U-disc includes the wireless U-disc any one of claim 1-9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858104.XA CN107463983A (en) | 2017-09-20 | 2017-09-20 | Wireless U-disc circuit and wireless U-disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858104.XA CN107463983A (en) | 2017-09-20 | 2017-09-20 | Wireless U-disc circuit and wireless U-disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107463983A true CN107463983A (en) | 2017-12-12 |
Family
ID=60552841
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710858104.XA Pending CN107463983A (en) | 2017-09-20 | 2017-09-20 | Wireless U-disc circuit and wireless U-disc |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2621317Y (en) * | 2003-04-30 | 2004-06-23 | 北京海鑫科金信息技术有限公司 | Rolling fingerprint collecting instrument |
| CN2729774Y (en) * | 2004-10-22 | 2005-09-28 | 浙江大学 | U disk with wireless receiving apparatus |
| CN202957047U (en) * | 2012-11-29 | 2013-05-29 | 东方口岸科技有限公司 | Encrypted USB (Universal Serial Bus) flash disk |
| CN103336746A (en) * | 2013-06-19 | 2013-10-02 | 江苏意源科技有限公司 | Safety encrypted USB (Universal Serial Bus) flash disk and data encryption method thereof |
| CN203872343U (en) * | 2014-05-15 | 2014-10-08 | 宁波音王电声股份有限公司 | Audio converter provided with USB flash disk function |
| CN204087794U (en) * | 2014-05-21 | 2015-01-07 | 河南师范大学 | A kind of wifi flash disk |
| CN104680056A (en) * | 2015-03-04 | 2015-06-03 | 江苏沁恒股份有限公司 | Safety USB (Universal Serial Bus) flash disk system and safety USB flash disk method for encrypting and decrypting through wireless man-machine interaction terminal |
| CN204497807U (en) * | 2015-04-22 | 2015-07-22 | 江西科技学院 | A kind of portable power source with massive store function |
| CN205281549U (en) * | 2016-01-13 | 2016-06-01 | 冯明丽 | WiFi flash disk |
| CN206097152U (en) * | 2016-07-29 | 2017-04-12 | 杨卿 | Multifunctional universal serial bus (USB) flash disk |
| CN106940814A (en) * | 2017-01-24 | 2017-07-11 | 东莞产权交易中心 | USB flash disk capable of displaying space occupation amount and display method thereof |
| CN207198896U (en) * | 2017-09-20 | 2018-04-06 | 深圳传音制造有限公司 | Wireless U-disc circuit and wireless U-disc |
-
2017
- 2017-09-20 CN CN201710858104.XA patent/CN107463983A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2621317Y (en) * | 2003-04-30 | 2004-06-23 | 北京海鑫科金信息技术有限公司 | Rolling fingerprint collecting instrument |
| CN2729774Y (en) * | 2004-10-22 | 2005-09-28 | 浙江大学 | U disk with wireless receiving apparatus |
| CN202957047U (en) * | 2012-11-29 | 2013-05-29 | 东方口岸科技有限公司 | Encrypted USB (Universal Serial Bus) flash disk |
| CN103336746A (en) * | 2013-06-19 | 2013-10-02 | 江苏意源科技有限公司 | Safety encrypted USB (Universal Serial Bus) flash disk and data encryption method thereof |
| CN203872343U (en) * | 2014-05-15 | 2014-10-08 | 宁波音王电声股份有限公司 | Audio converter provided with USB flash disk function |
| CN204087794U (en) * | 2014-05-21 | 2015-01-07 | 河南师范大学 | A kind of wifi flash disk |
| CN104680056A (en) * | 2015-03-04 | 2015-06-03 | 江苏沁恒股份有限公司 | Safety USB (Universal Serial Bus) flash disk system and safety USB flash disk method for encrypting and decrypting through wireless man-machine interaction terminal |
| CN204497807U (en) * | 2015-04-22 | 2015-07-22 | 江西科技学院 | A kind of portable power source with massive store function |
| CN205281549U (en) * | 2016-01-13 | 2016-06-01 | 冯明丽 | WiFi flash disk |
| CN206097152U (en) * | 2016-07-29 | 2017-04-12 | 杨卿 | Multifunctional universal serial bus (USB) flash disk |
| CN106940814A (en) * | 2017-01-24 | 2017-07-11 | 东莞产权交易中心 | USB flash disk capable of displaying space occupation amount and display method thereof |
| CN207198896U (en) * | 2017-09-20 | 2018-04-06 | 深圳传音制造有限公司 | Wireless U-disc circuit and wireless U-disc |
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