Mobile phone external device based on visible light communication
Technical field
The present invention relates to the visible light communication technical field, relate in particular to a kind of mobile phone external device based on visible light communication.
Background technology
Visible light communication is a kind of in technical emerging, the short distance high-speed radio optical communication technique that grows up of LED.The basic principle of visible light communication utilizes light-emitting diode (LED) than fluorescent lamp and the fast characteristics of incandescent lamp switch speed exactly; Glimmering through the high-frequency of led light source communicates, and has light to represent 1, unglazed representative 0; Send light signal at a high speed, pass through opto-electronic conversion again and acquired information.The wireless light communication technology is because its data are difficult for being disturbed and catching, and optical communication equipment is made simple and should not be damaged or demagnetization, can be used for making the wireless optical encryption key pair.Compare with microwave technology, wireless light communication has quite abundant frequency spectrum resource, and this is that general microwave communication and radio communication are incomparable; Visible light communication can be suitable for any communication protocol, be applicable to any environment simultaneously; Aspect fail safe, it compares traditional magnetic material, need not to worry the demagnetization problem, needn't worry that more Content of Communication stolen by the people; The equipment of wireless light communication sets up convenient flexibly, and with low cost, is fit to extensive popularization and application.
In the prior art, visible light communication system comprises transmitting terminal and receives control end that mobile phone can be used as emission and brings in the visible emitting signal, but has the part mobile phone not have signal lamp.Because mobile phone is the embedded device with specific function, thus itself and have abundant peripheral interface unlike the PC that kind, general mobile phone only has USB and two kinds of Peripheral Interfaces of sound interface.The similar third party device that occurs now is an interface with mobile phone USB and audio sockets all; And carry out data communication through these two interfaces; Wherein typical product is the mobile phone card-brushing device for example; It has utilized the audio sockets of mobile phone, an external third party device, and the POS machine function that third party software can be realized mobile phone is installed.Therefore, can adopt mobile phone USB or audio sockets is that interface connection external device comes the visible emitting signal.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of mobile phone external device based on visible light communication is provided, and can make the mobile phone of no signal lamp have the function of visible emitting signal, thereby improves user experience.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of mobile phone external device based on visible light communication, comprises the interface that is connected with mobile phone; With the conversion chip that said interface is connected, the data transaction that is used for mobile phone is sent is a binary data; The photophore that is connected with conversion chip is used for the form that said binary number glistens is according to this sent.
Preferably, said device also comprises the transparent dust cover with the corresponding setting of said photophore.
Wherein, said dust cover is a condenser.
Preferably, said device also comprises the memory cell that is connected with said conversion chip, is used for the data that memory mobile phone sends.
Preferably, said device also comprises the ciphering unit that is connected with said conversion chip, is used for said binary data is encrypted.
Preferably, said device also comprises the drive circuit that is connected with conversion chip.
Preferably, said device also comprises the inverter that is connected between said conversion chip and the photophore.
Wherein, said interface is a USB interface; Perhaps said interface is the interface with the mobile phone speech Interface Matching.
Wherein, said photophore is a light-emitting diode.
In the technique scheme, connect the visible light signal emitter,, can realize functions such as address list transmission, audio frequency and video transmission broadcast, mobile phone authentication, gate inhibition's control and mobile payment on mobile phone as long as corresponding software is installed through handset port.
Description of drawings
In order to be illustrated more clearly in embodiment of the present invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in execution mode or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is execution modes more of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1, the mobile phone external device structural representation that the embodiment of the invention one provides based on visible light communication;
Fig. 2, the mobile phone external device structural representation that the embodiment of the invention two provides based on visible light communication;
Fig. 3, the mobile phone external device structural representation that the embodiment of the invention three provides based on visible light communication;
Fig. 4, the mobile phone external device structural representation that the embodiment of the invention four provides based on visible light communication;
Fig. 5, the mobile phone external device structural representation that the embodiment of the invention five provides based on visible light communication;
Fig. 6, the mobile phone external device structural representation that the embodiment of the invention six provides based on visible light communication.
Embodiment
To combine the accompanying drawing in the embodiment of the present invention below, the technical scheme in the embodiment of the present invention is carried out clear, intactly description, obviously, described execution mode only is the present invention's part execution mode, rather than whole execution modes.Based on the execution mode among the present invention, those of ordinary skills are not making the every other execution mode that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one,
Referring to Fig. 1, be the mobile phone external device structural representation that the embodiment of the invention one provides based on visible light communication, this mobile phone external device 11 comprises shell 11a; The interface 11b that place in the shell, is connected with the interface 12a of mobile phone 12, this interface 11b can be a USB interface, also can be the interface with the mobile phone speech Interface Matching, according to concrete demand setting.
The conversion chip 11c that place in the shell, is connected with interface 11b, the information translation such as address list, audio frequency and video, mobile phone authentication, gate inhibition's control and mobile payment that are used for mobile phone is sent are binary data.In concrete implementation process, conversion chip 11c can be a binary data with the information translation that receives, and converts binary data into the lower edge triggering signal according to the Manchester's code mode again.For example, in a time cycle, convert binary data " 1 " into the rising edge triggering signal, " 0 " is converted into the trailing edge triggering signal.
The photophore 11d that be embedded in shell one end, is connected with conversion chip 11c is used for the form that the binary number that conversion chip 11c changes glistens is according to this sent.For example, luminous when photophore 11d receives the trailing edge triggering signal, not luminous when receiving the rising edge triggering signal.Photophore 11d can be a light-emitting diode.
In the present embodiment, handset port connects the visible light signal emitter, as long as corresponding software is installed on mobile phone, can realize functions such as address list transmission, audio frequency and video transmission broadcast, mobile phone authentication, gate inhibition's control and mobile payment.
Embodiment two,
Referring to Fig. 2, be the mobile phone external device structural representation that the embodiment of the invention two provides based on visible light communication, with respect to embodiment one, comprise also and the transparent dust cover 11e of the corresponding setting of photophore 11d that this transparent dust cover 11e can be a condenser.
Present embodiment has added dust cover 11e, on the one hand photophore 11d is played the effect of protection; On the other hand light signal is played the effect of converging, can improve effective propagation path.
Embodiment three,
Referring to Fig. 3, be the mobile phone external device structural representation that the embodiment of the invention three provides based on visible light communication, with respect to embodiment two, also comprise the memory cell 11f that is connected with said conversion chip 11c, be used for the information that memory mobile phone sends.
In the present embodiment, this mobile phone external device 11 can be used as the external memorizer of mobile phone 12, further improves user experience.
Embodiment four,
Referring to Fig. 4; It is the mobile phone external device structural representation that the embodiment of the invention four provides based on visible light communication; With respect to embodiment three, also comprise the ciphering unit 11g that is connected with said conversion chip 11c, be used for the binary data that conversion chip 11c is converted to is encrypted.
In the present embodiment, when user transmission be security information such as address list the time, through ciphering unit 11g this information is encrypted, improve fail safe.
Embodiment five,
Referring to Fig. 5; It is the mobile phone external device structural representation that the embodiment of the invention five provides based on visible light communication; With respect to embodiment four, also comprise the drive circuit 11h that is connected between conversion chip 11c and the photophore 11d, be used to guarantee the operating current of photophore 11d.
Present embodiment, the electric current constant current through drive circuit 11h guarantees input photophore 11d especially when ± 15% change takes place supply voltage, still should be able to keep output current in ± 10% scope, to change.
Embodiment six,
Referring to Fig. 6, be the mobile phone external device structural representation that the embodiment of the invention six provides based on visible light communication, with respect to embodiment four, also comprise the inverter 11k that is connected between conversion chip 11c and the photophore 11d.Can be when the photophore 11d transmission visible light signal through inverter 11k, the number of times of " bright " than " going out " often the time, save electric energy.
The above disclosed a kind of preferred embodiments of the present invention that is merely can not limit the present invention's interest field certainly with this, so according to the equivalent variations that claim of the present invention is done, still belong to the scope that the present invention is contained.