CN103226379A - Digital business card system - Google Patents
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- CN103226379A CN103226379A CN2013101649749A CN201310164974A CN103226379A CN 103226379 A CN103226379 A CN 103226379A CN 2013101649749 A CN2013101649749 A CN 2013101649749A CN 201310164974 A CN201310164974 A CN 201310164974A CN 103226379 A CN103226379 A CN 103226379A
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Abstract
The invention discloses a digital business card system. The digital business card system comprises a main-control unit, a sensor unit, a display unit, a memory unit, a wireless unit, an interface unit and a power supply unit. The digital business card system supports wireless information exchange, is based on the WiFi (Wireless Fidelity) technology, is high in transmission speed, and can achieve not only point-to-point information convey but also information group exchange; searching and browsing are convenient, and the equipment supports touch-screen page turning and rotary-switch page turning; one or more pages can be turned in one step; the digital business card has huge capacity, can simply communicate with a PC (Personal Computer) and is convenient to back up; and the business card display introduces the electronic paper technology, and the equipment has extremely low power consumption, conforms to the application characteristics of business cards and realizes normal content display in case of power failure. The digital business card system has a large angle of view and can achieve clear display even in strong light.
Description
Technical field
The invention belongs to the digital information technical field, relate in particular to a kind of numeric type visiting card system.
Background technology
Business card is the carrier of information, is the papery card that indicates name and affiliated tissue, company unit and contact method, and business card is the fastest effective method that new friend is familiar with mutually, introduces myself, and exchanging visiting cards is first standard official action of commercial contact.
Business card is the personal information carrier, is important social instrument, and the conventional business card quantity of information is little, is not easy to carry, and consults inconvenience, and the shortcoming of prior art is as follows: quantity of information is little, and is difficult to change; The physical form exchange produces consumption accordingly; Being not easy to flock-mate changes; Be difficult to carry, be not easy to search.
Mobile phone has the picture exchange function now, and the one, operability is not strong, and the 2nd, inconvenience when the user is numerous, the 3rd, the mobile phone individual difference is big, and is supportive limited, is difficult to apply.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of numeric type visiting card system, and the chip technology information memory capacity is little, form is single, form is fixed, carry inconvenience, inquiry is difficult, impression is inflexible, cost is higher, waste is serious, abandon problems such as causing certain pollution to be intended to solve existing.
The embodiment of the invention is achieved in that a kind of numeric type visiting card system, and described numeric type visiting card system comprises:
Main control unit is connected with described power supply unit, display unit, storage unit, radio-cell, interface unit, is used to finish sensor data acquisition, data processing, algorithm judgement, process control;
Power supply unit is connected with described main control unit, display unit, storage unit, radio-cell, interface unit; Be used to provide the energy support of necessity, to keep the normal operation of each unit;
Display unit is connected with power supply unit with described main control unit, is used to carry out information and shows, and be touch-screen input and dynamic vision feedback interface;
Storage unit is connected with power supply unit with described main control unit, is used to realize the storage of business card data information and configuration data;
Radio-cell is connected with power supply unit with described main control unit, is used for the information modulation and sends and demodulate reception, can be converted to the WIFI signal form to data message, so that the data communication between the business card;
Sensor unit is connected with power supply unit with described main control unit, is used for the setting motion detection and the description of equipment, when action takes place, master controller is discerned action, can carry out the triggering of correlation function according to institute's recognized action, as carries out business card switching or information transmission;
Interface unit is connected with power supply unit with described main control unit, is used for the mutual of operating personnel and digital business card, for operating personnel provide the information input channel, also provides equipment current state indication for operating personnel simultaneously;
Further, described main control unit also comprises reset circuit, crystal oscillating circuit, filter-capacitor circuit, clock circuit, adopts STM32107VCT6 as the master controller chip.
Further, described power supply unit is with the power supply of the charged lithium cells of 5V, comprises the change-over circuit of 3.3V.
Further, described display unit adopts Electronic Paper screen low in energy consumption.
Further, the information of described storage unit can sort out and deposit, and wipes rewriting according to information utilization, can adopt mass storage.
Further, the wireless signal of described radio-cell adopts the WIFI form.
Further, described sensor unit can realize that specific action is browsed and information transmits;
Further, the hardware of described numeric type visiting card system comprises with STM32107VCT6 being master controller, display Electronic Paper screen, memory device TF card and Wi-Fi wireless communication module, the acceleration transducer etc. of core;
Described display Electronic Paper, memory device TF card, Wi-Fi wireless communication module, acceleration transducer connect master controller chip STM32107VCT6 respectively.
Numeric type visiting card system provided by the invention is convenient to exchange and search, and is supported flock-mate to change, and is the new media of message exchange, and it adopts the WIFI technology to carry out radio communication, and the rate of information throughput is fast; Introduce Electronic Paper and show, power consumption is significantly reduced, realized the design concept of super low-power consumption as show media; The card information amount of digital business card is big, can support multiple information format and template, and can according to circumstances carry out edit-modify; Have again, increased human oriented design,, can realize that multipage switches, support the specific action trigger data to pass mutually as supporting gesture page turning and knob page turning; In addition, realize commercialization as color electric paper, digital business card will have more wide application space.
Description of drawings
Fig. 1 is the structured flowchart of the numeric type visiting card system that provides of the embodiment of the invention.
Among the figure: 1, main control unit; 2, display unit; 3, storage unit; 4, radio-cell; 5, sensor unit; 6, interface unit; 7, power supply unit.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows numeric type visiting card system structure provided by the invention.For convenience of explanation, only show part related to the present invention.
Numeric type visiting card system of the present invention comprises:
Main control unit, information Control and processing core;
Power supply unit is connected with main control unit, is used to provide power supply signal;
Display unit is connected with power supply unit with main control unit, is used to carry out information and shows;
Storage unit is connected with power supply unit with main control unit, is used to carry out information stores;
Radio-cell is connected with power supply unit with main control unit, is used for the information modulation is sent and demodulate reception;
Sensor unit is connected with power supply unit with main control unit, is used to carry out the equipment attitude detection;
Interface unit is connected with power supply unit with main control unit, is used to operating personnel that the information input channel is provided.
As a prioritization scheme of the embodiment of the invention, main control unit adopts the STM32F107VC process chip.Main control unit is mainly finished functions such as sensor data acquisition, information processing, flow process control, and main control unit intends adopting STM32F107 as its main control chip, and in addition, Main Control Unit has also comprised reset circuit, clock circuit etc.Reset circuit provides electrification reset and button reset signal for main control unit, and clock circuit provides the clock square-wave signal for governor circuit.When advancing card information and transmit mutually, main control unit is set up wireless communication link earlier, reads information from memory cell then, and delivers to radio-cell and carry out information output, simultaneously, receives information from radio-cell, and writes to storage unit.When sensor attitude changes, a certain period of time change of parameter is gathered, then specific aim is carried out in action and handles relatively, as with storage unit in the action model that prestores be complementary, then trigger corresponding action, as the business card page turning.Main control unit can scan with a less time interval docking port unit simultaneously, when dependent event takes place, change as the fork shift selector switch, master controller will change relevant non-loss parameter, thereby reprogramming is carried out branch, these parameter settings are stored among the inside EEROM of master controller, but not in the external memory unit.The main control unit power supply is 3.3V.
Prioritization scheme as the embodiment of the invention, display unit adopts Electronic Paper screen low in energy consumption, display unit mainly is made up of Electronic Paper and driving thereof, drive master chip and then select S1D13521, it can provide multiple host process function, greatly alleviate load on host computers, promoted the entire system performance; Maximum 4096 * 4096 resolution (being lower than 50Hz), Scheme Choice 480 * 360 resolution supported.It refreshes based on S1D13521 Electronic Paper controller, and main control unit can be carried out the local erasable of 16 zones simultaneously, improves the response speed of touch screen Electronic Paper.Because it is different with CRT and LCD that Electronic Paper refreshes mode, when having only new data, it just refreshes, S1D13521 can provide pinup picture and brush screen two kinds of functions to upper layer application, can adopt multi-stage grey scale to brush soon during the brush screen, for guaranteeing real-time response, select the black and white secondary to refresh mode here, S1D13521 can adopt the GPIO mouth to be connected with main control unit, its power supply need add filter capacitor for 3.3V between power supply and the ground.
Prioritization scheme as the embodiment of the invention, the information of storage unit can be sorted out and deposits, and wipe rewriting according to information utilization, can adopt mass storage, design alternative 4G capacity TF card is as primary memory, the TF card adopts the SD architecture design, its read-write mode is more consistent, interface mode has SPI pattern and SDIO pattern, adopt different initialization modes can make the TF card work in SDIO mode or SPI mode, here select the SPI mode, what the SD bus adopted under the SPI pattern is a kind of principal and subordinate's question and answer mode agreement, STM32F107VC comprises serial peripheral SPI interface, can stick into row with SD easily and be connected, and only needs 4 interface signal: MISO, MOSI, SCK, CS, the interface line that this pattern takies is few, characteristics are whether the appearance by the main equipment clock signal comes to determine the communication between master/slave arrangement, when the clock signal that detects main equipment occurs, data transmission begin and efficient higher.Simultaneously, data on the TF card need direct read on computers, so TF Cavan part system must be same as the file system of computing machine, the FAT file system is widely used in the current electronic product, so on TF card memory mechanism, transplanted the FATFS file system, the FATFS system fully freely increases income, system makes to measure for low profile edge, write with mark C fully, has good hardware platform independence, only need do minor modifications can be transplanted to other platforms, and the code that the programmer need write is the physical layer interface that FATFS provides, and comprises the real-time clock of storage medium read-write interface and supply document creation modification time.Stored relevant business card file information in storage unit, business card templates information etc., these information all directly can be checked and edit by individual PC.The power supply of storage unit is 3.3V.
Prioritization scheme as the embodiment of the invention, the wireless signal of radio-cell adopts the WIFI form, radio-cell adopts the Uart-Wifi building block technique to carry out message exchange, its main chip is AX22001, AX22001 is a single chip microcontroller, the little master control of single-chip TCP/IP of built-in 802.11 wireless network MAC/ base band, the 1MB that the two CPU core of high-performance is provided and is used for code storage shares flash memory, the 64KB data-carrier store of the embedded MCPU of being used for and be used for the 32KB data-carrier store of WCPU, built-in TCP/IP accelerator, it is connected by the UART asynchronous serial port with main control unit, adopt relevant AT command set to carry out agreement control, its power supply is 3.3V, access network based on ethernet easily.
As a prioritization scheme of the embodiment of the invention, sensor unit is mainly gathered the attitude information variation of equipment, thereby triggers the action that presets.Processing to institute's Information Monitoring is then finished by Main Control Unit with judgement.The ADXL345 acceleration transducer of ADI company is selected in design for use, its encapsulation is extra small, highly sensitive, low in energy consumption, according to different application, the measurement range of acceleration transducer does not wait to tens g from several g, inner integrated multiple motion state detects and characteristic such as interrupt mode flexibly, solution is provided to provide flexibly and simplifies the attitude algorithm, it is communicated by letter with master controller foundation by the IIC mouth, and ADXL345 is mainly used in mobile device, it can measure the static weight acceleration of tilting body, can also measure owing to motion or impact the dynamic acceleration cause, resolution can reach 3.9mg/LSB, can measure the variation less than 1.0 ° angle of inclination.Power supply adopts the 3.3V power supply, and sensor unit adopts the IIC mode to be connected with Main Control Unit.
As a prioritization scheme of the embodiment of the invention, the hardware of numeric type visiting card system comprises master controller STM32107VCT6, display Electronic Paper color screen, memory device TF card and Wi-Fi radio communication communication module;
Prioritization scheme as the embodiment of the invention, the hardware of numeric type visiting card system comprises power supply unit, is mainly other unit the energy support is provided, and design adopts the 5V lithium battery as power supply, therefore other cell operation of system needs change-over circuit all based on 3.3V.3.3V power supply is based on the design of AMS1117 power supply chip, so the big 1A of its electric current satisfies design requirement fully.AMS1117 is the voltage forward regulator of a low-power consumption, generally is used for the design of the low-power consumption of efficient little encapsulation, and AMS1117 has 1.8V, 2.5V, voltage in several modes such as 3.3V and 5V.Here select 3.3V output and TO-220 encapsulation, typical circuit is adopted in design, needs the corresponding capacitance resistance of coupling.
The power supply unit of digital business card connects mutually with the primary controller unit and is connected with other all unit.
Below in conjunction with drawings and the specific embodiments application principle of the present invention is further described.
As shown in Figure 1, the numeric type visiting card system of the embodiment of the invention mainly is made up of main control unit 1, sensor unit 5, display unit 2, storage unit 3, radio-cell 4, interface unit 6 and power supply unit 7.
Main control unit 1: information Control and processing core, the information that receiving sensor unit 5 transmits, to display unit 2 transmission information, transmit and reception information to storage unit 3, radio-cell 4, interface unit 6 successively simultaneously, receive the power supply signal that power supply unit 7 provides;
Display unit 2: the information of mainly carrying out shows, receives the information that main control unit 1 transmits, and simultaneously, can be used as the touch-screen input passage, receives the power supply signal that power supply unit 7 provides;
Storage unit 3: mainly carry out information stores, the quantity of its decision business card.Transmission information is given main control unit 1, receives the information of main control unit 1 output simultaneously, receives the power supply signal that power supply unit 7 provides;
Radio-cell 4: wireless channel, can send the information modulation or demodulate reception, transmission information is given main control unit 1, receives the information of main control unit 1 output simultaneously, receives the power supply signal that power supply unit 7 provides;
Sensor unit 5: mainly carry out position probing, can realize that the button-free formula browses, transmission information is given main control unit 1, receives the power supply signal that power supply unit 7 provides;
Interface unit 6: be mainly operating personnel the information input channel is provided, transmission information is given main control unit 1, receives the information of main control unit 1 output simultaneously, receives the power supply signal that power supply unit 7 provides;
Power supply unit 7: be mainly other unit energy consumption is provided, provide power supply signal to main control unit 1, sensor unit 5, display unit 2, storage unit 3, radio-cell 4 and interface unit 6 successively.
Principle of work of the present invention: business card is as a kind of information carrier, a little less than its confidentiality requires relatively.Its course of work is that generally speaking, business card is in dormant state, when needing, but manual control is waken up, when pressing the message exchange key or triggering other specific action, carries out the search and the exchange of information based on the WIFI focus, point-to-point exchange can be carried out or flock-mate is changed, exchange is finished automatically, and the information of exchange can be based on picture, also can be based on specific template, after the message exchange, be stored in the corresponding memory.Storer is selected the TF card for use, then can carry out the batch duplicating of information, when searching, can switch based on the certain location action, as get rid of, certain angle inclines, or use rotary knob logical, cross gear and select can determine to browse number at every turn, as one or ten, be convenient to search, simultaneously, because of having adopted the Electronic Paper demonstration, its power consumption is extremely low, the information of also keeping for a long time after the power down shows, meets very much the business card characteristics.
Display unit 2: display unit adopts Electronic Paper screen low in energy consumption, display unit mainly is made up of Electronic Paper and driving thereof, drives master chip and then selects S1D13521, and it can provide multiple host process function, greatly alleviate load on host computers, promoted the entire system performance; Maximum 4096 * 4096 resolution (being lower than 50Hz), Scheme Choice 480 * 360 resolution supported.Support 32 gray level display, support the parallel demonstration of multizone to refresh, improved the response speed of electronic-paper display screen; Based on S1D13521 Electronic Paper controller, main control unit can be carried out the local erasable of 16 zones simultaneously, improves the response speed of touch screen Electronic Paper.Because it is different with CRT and LCD that Electronic Paper refreshes mode, when having only new data, it just refreshes, S1D13521 can provide pinup picture and brush screen two kinds of functions to upper layer application, can adopt multi-stage grey scale to brush soon during the brush screen, for guaranteeing real-time response, select the black and white secondary to refresh mode here, S1D13521 can adopt the GPIO mouth to be connected with main control unit, its power supply need add filter capacitor for 3.3V between power supply and the ground.
Storage unit 3: the information of storage unit can be sorted out and deposits, and wipe rewriting according to information utilization, can adopt mass storage, design alternative 4G capacity TF card is as primary memory, the TF card adopts the SD architecture design, its read-write mode is more consistent, interface mode has SPI pattern and SDIO pattern, adopt different initialization modes can make the TF card work in SDIO mode or SPI mode, here select the SPI mode, what the SD bus adopted under the SPI pattern is a kind of principal and subordinate's question and answer mode agreement, STM32F107VC comprises serial peripheral SPI interface, can stick into row with SD easily is connected, only need 4 interface signal: MISO, MOSI, SCK, CS, the interface line that this pattern takies is few, and characteristics are whether the appearance by the main equipment clock signal comes to determine the communication between master/slave arrangement, when the clock signal that detects main equipment occurs, data transmission begin and efficient higher.Simultaneously, data on the TF card need direct read on computers, so TF Cavan part system must be same as the file system of computing machine, the FAT file system is widely used in the current electronic product, so on TF card memory mechanism, transplanted the FATFS file system, the FATFS system fully freely increases income, system makes to measure for low profile edge, write with mark C fully, has good hardware platform independence, only need do minor modifications can be transplanted to other platforms, and the code that the programmer need write is the physical layer interface that FATFS provides, and comprises the real-time clock of storage medium read-write interface and supply document creation modification time.Stored relevant business card file information in storage unit, business card templates information etc., these information all directly can be checked and edit by individual PC.The power supply of storage unit is 3.3V.
Radio-cell 4: the radio-cell signal adopts the WIFI form, radio-cell is mainly used in message exchange, its main chip is AX22001, AX22001 is a single chip microcontroller, it can control the output content of wireless signal by common UART mouth, the little master control of single-chip TCP/IP of its built-in 802.11 wireless network MAC/ base band, the 1MB that the two CPU core of high-performance is provided and is used for code storage shares flash memory, the 64KB data-carrier store of the embedded MCPU of being used for and be used for the 32KB data-carrier store of WCPU, built-in TCP/IP accelerator, it is connected by the UART asynchronous serial port with main control unit, adopt relevant AT command set to carry out agreement control, its power supply is 3.3V, access network based on ethernet easily.
Sensor unit 5: sensor unit is mainly gathered the attitude information variation of equipment, thereby triggers the action that presets.Processing to institute's Information Monitoring is then finished by Main Control Unit with judgement.The ADXL345 acceleration transducer of ADI company is selected in design for use, its encapsulation is extra small, highly sensitive, low in energy consumption, according to different application, the measurement range of acceleration transducer does not wait to tens g from several g, inner integrated multiple motion state detects and characteristic such as interrupt mode flexibly, solution is provided to provide flexibly and simplifies the attitude algorithm, it is communicated by letter with master controller foundation by the IIC mouth, and ADXL345 is mainly used in mobile device, it can measure the static weight acceleration of tilting body, can also measure owing to motion or impact the dynamic acceleration cause, resolution can reach 3.9mg/LSB, can measure the variation less than 1.0 ° angle of inclination.Power supply adopts the 3.3V power supply, and sensor unit adopts the IIC mode to be connected with Main Control Unit.
Power supply unit 7: power supply unit is mainly other unit the energy support is provided, and design adopts the 5V lithium battery as power supply, and therefore other cell operation of system needs change-over circuit all based on 3.3V.3.3V power supply is based on the design of AMS1117 power supply chip, so the big 1A of its electric current satisfies design requirement fully.AMS1117 is the voltage forward regulator of a low-power consumption, generally is used for the design of the low-power consumption of efficient little encapsulation, and AMS1117 has 1.8V, 2.5V, voltage in several modes such as 3.3V and 5V.Here select 3.3V output and TO-220 encapsulation, typical circuit is adopted in design, needs the corresponding capacitance resistance of coupling.
The hardware device that system of the present invention adopts in design process, hardware comprise master controller STM32107VCT6, display Electronic Paper color screen and driving thereof, memory device TF card, Wi-Fi wireless module and telecommunication circuit, sensor circuit and other interface components and parts.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a numeric type visiting card system is characterized in that, described numeric type visiting card system comprises:
Main control unit is connected with described power supply unit, display unit, storage unit, radio-cell, interface unit, is used to finish sensor data acquisition, data processing, algorithm judgement, process control;
Power supply unit is connected with described main control unit, display unit, storage unit, radio-cell, interface unit, is used to provide the energy support, to keep the normal operation of each unit;
Display unit is connected with power supply unit with described main control unit, is used to carry out information and shows, and be touch-screen input and dynamic vision feedback interface;
Storage unit is connected with power supply unit with described main control unit, is used to realize the storage of business card data information and configuration data;
Radio-cell is connected with power supply unit with described main control unit, is used for the information modulation and sends and demodulate reception, can be converted to the WIFI signal form to data message, so that the data communication between the business card;
Sensor unit is connected with power supply unit with described main control unit, is used for the setting motion detection of equipment, and when action takes place, digital business card will carry out exchanges data work, after action recognition is finished, just can carry out the triggering of correlation function;
Interface unit is connected with power supply unit with described main control unit, is used for the mutual of operating personnel and digital business card, for operating personnel provide the information input channel, also provides equipment current state indication for operating personnel simultaneously.
2. numeric type visiting card system as claimed in claim 1 is characterized in that described main control unit also comprises reset circuit, crystal oscillating circuit, filter-capacitor circuit, clock circuit; Described main control unit adopts STM32107VCT6 as main control chip.
3. numeric type visiting card system as claimed in claim 1 is characterized in that, described power supply unit comprises the change-over circuit of 3.3V with the charged lithium cells power supply of 5V.
4. numeric type visiting card system as claimed in claim 1 is characterized in that, described display unit adopts Electronic Paper screen low in energy consumption.
5. numeric type visiting card system as claimed in claim 1 is characterized in that, the information of described storage unit can be sorted out and deposits, and wipes rewriting according to information utilization, can adopt mass storage.
6. numeric type visiting card system as claimed in claim 1 is characterized in that, the wireless signal of described radio-cell adopts the WIFI form.
7. numeric type visiting card system as claimed in claim 1 is characterized in that, described sensor unit realizes that specific action is browsed, knob is browsed, touch screen is browsed.
8. numeric type visiting card system as claimed in claim 1, it is characterized in that the hardware of described numeric type visiting card system comprises with STM32107VCT6 being master controller, display Electronic Paper screen, memory device TF card and Wi-Fi wireless communication module, the acceleration transducer of core;
Described display Electronic Paper, memory device TF card, Wi-Fi wireless communication module, acceleration transducer connect master controller chip STM32107VCT6 respectively.
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| CN2013101649749A CN103226379A (en) | 2013-05-07 | 2013-05-07 | Digital business card system |
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| CN2013101649749A CN103226379A (en) | 2013-05-07 | 2013-05-07 | Digital business card system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104243279A (en) * | 2013-06-24 | 2014-12-24 | 联想(北京)有限公司 | Information processing method and equipment and wearable electronic equipment |
| CN104332116A (en) * | 2014-11-04 | 2015-02-04 | 北京联合大学 | Electronic business card and implementation method thereof |
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| CN1525342A (en) * | 2003-02-28 | 2004-09-01 | 北京中星微电子有限公司 | Mobile storage unit and method capable of visiting card scanning and electronic visiting card transmission |
| CN101290746A (en) * | 2008-06-18 | 2008-10-22 | 北京工业大学 | Image updating method of electronic paper screen |
| CN103020473A (en) * | 2012-12-28 | 2013-04-03 | 苏州群凯信息系统有限公司 | Electronic business card and manufacturing method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1525342A (en) * | 2003-02-28 | 2004-09-01 | 北京中星微电子有限公司 | Mobile storage unit and method capable of visiting card scanning and electronic visiting card transmission |
| CN101290746A (en) * | 2008-06-18 | 2008-10-22 | 北京工业大学 | Image updating method of electronic paper screen |
| CN103020473A (en) * | 2012-12-28 | 2013-04-03 | 苏州群凯信息系统有限公司 | Electronic business card and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243279A (en) * | 2013-06-24 | 2014-12-24 | 联想(北京)有限公司 | Information processing method and equipment and wearable electronic equipment |
| CN104243279B (en) * | 2013-06-24 | 2020-08-18 | 联想(北京)有限公司 | Information processing method, information processing device and wearable electronic device |
| CN104332116A (en) * | 2014-11-04 | 2015-02-04 | 北京联合大学 | Electronic business card and implementation method thereof |
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Application publication date: 20130731 |