CN103795471B - Optical or acoustic communication method and system - Google Patents
Optical or acoustic communication method and system Download PDFInfo
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- CN103795471B CN103795471B CN201310574492.0A CN201310574492A CN103795471B CN 103795471 B CN103795471 B CN 103795471B CN 201310574492 A CN201310574492 A CN 201310574492A CN 103795471 B CN103795471 B CN 103795471B
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Abstract
The invention relates to an optical or acoustic communication method and system. The optical communication method comprises the following steps that: transmission signals carrying indication information is transmitted to a transmitting end of light from a receiving end of visible light; the transmission signals are received and decoded at the transmitting end, such that the indication information can be verified; and the indication information is responded, and optical communication signals containing communication data are transmitted to the receiving end from the transmitting end.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of light or sound wave communication method and system.
Background technology
Optical communication is a kind of emerging, short distance high-speed radio optical communication technique of growing up in LED technology.The general principle of optical communication utilizes light-emitting diode (LED) than fluorescent lamp and the fast feature of incandescent lamp switch speed exactly, is communicated by the high-frequency flicker of LED light source.There is light to represent binary one, unglazedly represent Binary Zero.The high-speed optical signal containing digital information can obtain information through opto-electronic conversion.Optical communication technique is because its data are not easily disturbed and catch, and optical communication equipment makes simple and should not damage or demagnetization, can be used for making light encryption key pair.Compared with microwave technology, optical communication has quite abundant frequency spectrum resource, and this is that general microwave communication and radio communication are incomparable; Optical communication simultaneously can be suitable for any communication protocol, be applicable to any environment; In fail safe, traditional magnetic material is compared in optical communication, without the need to worrying demagnetization problem, more need not worry that Content of Communication is stolen by people; The equipment erection of optical communication is convenient flexibly, and with low cost, is applicable to extensive popularization and application.
For unidirectional optical communication system, generally need before receiving-transmitting sides transmission information to shake hands through one or many.Only need transmit the system of simple information for some, such as gate control system, such shaking hands seems very consuming time, adds the stand-by period of user.Simple replacement method is, by transmitting terminal one side in the rear transmission information of the instruction receiving operator.But this needs user to intervene, and adds inconvenience.
In addition, although the directive property having benefited from light beam is strong, the probability that Content of Communication leaks reduces greatly, and light not has no potential safety hazard.A hidden danger is that light beam may be intercepted by third party's receiving equipment, thus decodes information wherein.Concerning safety applications, this information be decrypted may be used to verification system of out-tricking, thus brings the loss of the aspect such as privacy, property to user.
For unidirectional optical communication system, have at present and solve aforementioned hidden danger by the agreement of transmitting terminal and receiving terminal.
A kind of method is the asynchronous scheme adopted based on event or counting.The counter mechanism that this scheme is all appointed by transmitting terminal and receiving terminal, only has the count value receiving transmitting terminal when receiving terminal to meet decision rule and just thinks legal.But because receiving terminal can not give transmitting terminal feedback, increase progressively so this counter mechanism can only be unidirectional or successively decrease, algorithm easily cracks.
Another method adopts time-based synchronization scenario.This scheme all uses same start time at transmitting terminal and receiving terminal, and receiving terminal judges whether to meet predetermined clocking error by the clock information comparing transmitting terminal and receiving terminal, and whether judgement is legal.But the precision of this protocols call clock crystal oscillator is very high, As time goes on, may need to do clock alignment to transmitting terminal and receiving terminal, the actual use for product is very inconvenient.
Two-way communication can allow between transmit leg and recipient and mutually verify, thus greatly reduces aforementioned hidden danger.But two-way optical communication needs transmit leg and recipient all to possess light-receiving and decoding capability, higher to communication system requirements.
For other transmission medium of use, the simplex system of such as sound wave, foregoing problems also exists.For this reason, wish that one both can improve portability and fail safe, significantly can not change again the improvement project of system.
Summary of the invention
The invention provides a kind of light or sound wave communication method and system, to improve at least part of shortcoming of prior art.
One aspect of the present invention proposes a kind of optical communication method, comprises the following steps: the transmitting terminal of signal transmission to light carrying indication information from the receiving terminal transmission of light; Receive and this signal transmission of decoding at this transmitting terminal, to verify this indication information; And in response to this indication information, send communicate optical signal to this receiving terminal from this transmitting terminal, this communicate optical signal carries communication data.
In one embodiment of this invention, this indication information comprises identifying code.
In one embodiment of this invention, this communicate optical signal also carries this identifying code, the method also comprises: receive and this communicate optical signal of decoding at this receiving terminal, and judge that whether the identifying code comprised in this communicate optical signal is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified.
In one embodiment of this invention, this identifying code is random code.
In one embodiment of this invention, send the signal transmission that carries indication information to the step of the transmitting terminal of light to comprise from the receiving terminal of light: send this signal transmission in response to an operation instruction.
In one embodiment of this invention, send the signal transmission that carries indication information to the step of the transmitting terminal of light to comprise from the receiving terminal of light: continuously or interval send this signal transmission.
In one embodiment of this invention, if verify this indication information failure, then this transmitting terminal does not send communicate optical signal.
In one embodiment of this invention, this communicate optical signal also carries identification code, after being verified, is also included in this this identification code of receiving terminal process to identify this transmitting terminal.
In one embodiment of this invention, this signal transmission also carries the access level value of this receiving terminal, before sending this communicate optical signal, is also included in this transmitting terminal and determines that the access right limit value of this transmitting terminal reaches this access level value from this transmitting terminal.
In one embodiment of this invention, if the access right limit value of this transmitting terminal does not reach this access level value, then this transmitting terminal does not send communicate optical signal.
In one embodiment of this invention, after being verified, said method also comprises: carry the signal transmission of logout to this transmitting terminal from the transmission of this receiving terminal, this logout comprises identification code and the proving time of this receiving terminal.
In one embodiment of this invention, said method is also included in this transmitting terminal and this logout that decoding obtains is transferred to a server.
In one embodiment of this invention, after being verified, said method also comprises: carry the signal transmission of logout to server from the transmission of this receiving terminal, this logout comprises identification code and the proving time of this receiving terminal.
In one embodiment of this invention, this signal transmission is acoustic signals, low frequency signal, radiofrequency signal or infrared signal.
Another aspect of the present invention proposes a kind of sound wave communication method, comprises the following steps: the transmitting terminal of signal transmission to sound wave carrying indication information from the receiving terminal transmission of sound wave; Receive and this signal transmission of decoding at this transmitting terminal, to verify this indication information; And in response to this indication information, send from this transmitting terminal and comprise acoustic communication signals to this receiving terminal, this acoustic communication signals carries communication data.
In one embodiment of this invention, this indication information comprises identifying code.
In one embodiment of this invention, this acoustic communication signals also carries this identifying code, the method also comprises: receive and this acoustic communication signals of decoding at this receiving terminal, and judge that whether the identifying code comprised in acoustic communication signals is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified.
In one embodiment of this invention, this acoustic communication signals is ultrasonic signal, can listens ripple signal or infrasound signal.
Another aspect of the present invention proposes a kind of optical communication system, comprising: transmitting terminal, comprises light transmitting element and subsidiary communications receiving element; Receiving terminal, comprises light receiving unit and subsidiary communications transmitting element; Wherein this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, and this subsidiary communications receiving element is used for receiving and this signal transmission of decoding, to verify this indication information; This light transmitting element is used in response to this indication information, and send and comprise communicate optical signal to this light receiving unit, this communicate optical signal carries communication data.
In one embodiment of this invention, this indication information comprises identifying code.
In one embodiment of this invention, this communicate optical signal also carries this identifying code, this light receiving unit is also for receiving and this communicate optical signal of decoding, and judge that whether the identifying code comprised in communicate optical signal is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified.
In one embodiment of this invention, this communication data comprises identification code, and after being verified, this light receiving unit also processes this identification code to identify this transmitting terminal.
In one embodiment of this invention, this signal transmission also carries the access level value of this receiving terminal, and this light transmitting element also determines whether the access right limit value of this transmitting terminal reaches this access level value.
In one embodiment of this invention, if the access right limit value of this transmitting terminal does not reach this access level value, then this light transmitting element does not send communicate optical signal.
In one embodiment of this invention, after being verified, the transmission of this subsidiary communications transmitting element carries the signal transmission of logout to this subsidiary communications receiving element, and this logout comprises identification code and the proving time of this receiving terminal.
In one embodiment of this invention, this signal transmission is acoustic signals, low frequency signal, radiofrequency signal or infrared signal.
In one embodiment of this invention, this optical communication system is ticketing system, payment system, Antiforge system or gate control system.
Another aspect of the present invention proposes a kind of acoustic communication system, comprising: transmitting terminal, comprises sound wave transmitting element and subsidiary communications receiving element; Receiving terminal, comprises acoustic receiver unit and subsidiary communications transmitting element; Wherein this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, and this subsidiary communications subsidiary communications receiving element is used for receiving and this signal transmission of decoding, to verify this indication information; This sound wave transmitting element is used in response to this indication information, and send and comprise acoustic communication signals to this acoustic receiver unit, this acoustic communication signals carries communication data.
Another aspect of the present invention proposes a kind of transmitting terminal of optical communication system, comprise light transmitting element and subsidiary communications receiving element, this subsidiary communications receiving element is for receiving and decoding from the signal transmission carrying indication information of the receiving terminal of optical communication system, to verify this indication information; This light transmitting element is used in response to this indication information, and send communicate optical signal to this receiving terminal, this communicate optical signal comprises communication data.
Another aspect of the present invention proposes a kind of receiving terminal of optical communication system, comprises light receiving unit and subsidiary communications transmitting element, and this subsidiary communications transmitting element is for sending the signal transmission carrying indication information; This light receiving unit is for receiving and decoding from the communicate optical signal sent in response to this indication information of a transmitting terminal.
Another aspect of the present invention proposes a kind of transmitting terminal of acoustic communication system, comprise sound wave transmitting element and subsidiary communications receiving element, this subsidiary communications receiving element, for receiving and decoding from the signal transmission carrying indication information of the receiving terminal of acoustic communication system, extracts this indication information to verify; This sound wave transmitting element is used in response to this signal transmission, and send acoustic communication signals to this receiving terminal, this acoustic communication signals comprises communication data.
Another aspect of the present invention proposes a kind of receiving terminal of acoustic communication system, comprises acoustic receiver unit and subsidiary communications transmitting element, and this subsidiary communications transmitting element is for sending the signal transmission carrying indication information; This acoustic receiver unit is for receiving and decoding from the acoustic communication signals sent in response to this indication information of a transmitting terminal.
The present invention, owing to adopting above technical scheme, makes the transmitting terminal of optical communication system or acoustic communication system in response to the triggering carrying indication information of receiving terminal, can send communicate optical signal.Like this, transmitting terminal is directly communicated when without the need to intervening, and it is more convenient to use.In addition, by the checking to indication information, to have made between transmitting terminal and receiving terminal many and verified together, improved fail safe.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates the structured flowchart of the optical communication system of one embodiment of the invention.
Fig. 2 illustrates the optical communication method flow chart of first embodiment of the invention.
Fig. 3 illustrates the optical communication method flow chart of second embodiment of the invention.
Fig. 4 illustrates the optical communication method flow chart of third embodiment of the invention.
Fig. 5 illustrates the optical communication method flow chart of third embodiment of the invention.
Fig. 6 illustrates the structured flowchart of the acoustic communication system of one embodiment of the invention.
Fig. 7 illustrates the sound wave communication method flow chart of one embodiment of the invention.
Embodiment
With reference now to accompanying drawing, describe invention required for protection, in whole accompanying drawing, use identical reference number to refer to identical parts or step.In the following description, for the purpose of explaining, numerous detail is disclosed to provide the complete understanding to theme required for protection.But it is evident that, these inventions also can not adopt these details to implement.
Embodiments of the invention propose a kind of light or sound wave communication method.This communication means is mainly based on unidirectional light or acoustic communication.Further, embodiments of the invention introduce extra auxiliary communication channel to increase by one checking, and after being verified, trigger the transfer of data on main communication port.Like this, transmitting terminal directly can send communication data without the need to manual operation, and it is more convenient to use.Such as, and for various authentication system, payment system, gate control system, this checking is of great advantage for raising security of system.But be appreciated that embodiments of the invention are not restricted to authentication system, also may be implemented in the data transmission system needing to improve fail safe.
Fig. 1 illustrates the structured flowchart of the optical communication system of one embodiment of the invention.With reference to shown in Fig. 1, optical communication system 100 comprises light transmitting terminal (hereinafter referred to as transmitting terminal) 110 and optical receiving end (hereinafter referred to as receiving terminal) 120.Transmitting terminal 110 comprises light transmitting element 111 and subsidiary communications receiving element 112.Receiving terminal 120 comprises light receiving unit 121 and subsidiary communications transmitting element 122.
Light transmitting element 111 can be encoded and be sent communicate optical signal.The common transmit mechanism of light transmitting element 111 is, utilizes the high-frequency of light-emitting diode (LED) light source to glimmer and sends communicate optical signal.As a rule, there is light to represent binary one, unglazedly represent Binary Zero.But be appreciated that various coding and modulation system can be used to obtain communicate optical signal.The high-speed optical signal containing digital information can obtain information through opto-electronic conversion.In addition, the photoflash lamp of the portable electric appts with camera function also can be used as light source.Certainly, the type of part photoflash lamp inherently LED.
Light receiving unit 121 can receive and communicate optical signal of decoding.Light receiving unit 121 can use the optical signal receiver such as photodiode, video camera.
Subsidiary communications transmitting element 122 can use frequency range various signal transmission widely, and such as low frequency signal, radiofrequency signal, infrared signal carry out transmission information.Therefore, subsidiary communications transmitting element 122 may be embodied as sound wave transmitting element, low-frequency electromagnetic wave transmitting element, radio frequency unit, WIFI unit, Bluetooth transmission unit, infrared emission unit etc.Subsidiary communications receiving element 112 and subsidiary communications transmitting element 122 with the use of.
According to one embodiment of the invention, before optical communication, subsidiary communications transmitting element 122 can send carry indication information signal transmission to subsidiary communications receiving element 112.Indication information can comprise identifying code.Subsidiary communications receiving element 112 can receive and this signal transmission of decoding, to verify this indication information.
For the receiving terminal 120 that mate legal in transmitting terminal 110, its indication information sent can be sent out end 110 and be proved to be successful.Like this, the light transmitting element 111 of transmitting terminal 110 in response to indication information, can send the communicate optical signal comprising communication data.Correspondingly, the light receiving unit 121 of receiving terminal 120 can receive and communicate optical signal of decoding.
If receiving terminal 120 mates with transmitting terminal 110 is illegal, then the subsidiary communications receiving element 112 of transmitting terminal 110 usually cannot good authentication indication information.So transmitting terminal 110 can not send communicate optical signal to receiving terminal 120.In one embodiment, indication information can comprise identifying code.Further, transmitting terminal 110 can also comprise identifying code to return to receiving terminal 120 at communicate optical signal.Receiving terminal 120 so the identifying code comprised in judging the signal transmission that the identifying code and receiving terminal that comprise in communicate optical signal send self whether consistent, if consistent, be verified.Like this, receiving terminal 120 also can just verify before the data content of decoding communicate optical signal that whether transmitting terminal 110 is legal conversely.This mode is for the communicate optical signal content decoded between transmitting terminal 110 and receiving terminal 120, and the illegal means attempting to visit with the transmitting terminal of falseness receiving terminal has good interception.
In one embodiment of this invention, the subsidiary communications transmitting element 122 of receiving terminal is preferably and continues or compartment of terrain sends and carries the signal transmission of identifying code.When sending at interval, can be rule or erratic transmission signal transmission.Like this, transmitting terminal 110, when receiving terminal 120, just can send communicate optical signal in response to this signal transmission, not need human intervention.In another embodiment of the invention, the subsidiary communications transmitting element 122 of receiving terminal can be after acquisition one indicates, send the signal transmission carrying identifying code.Like this, can avoid sending loss power for a long time.Those skilled in the art can select one of above two kinds of modes according to the enforcement occasion of optical communication system.
In the various embodiments of the invention, various algorithm known can be used to guarantee can not cracking of identifying code.Such as, random algorithm is used to obtain random code.
Fig. 2 illustrates the optical communication method flow chart of first embodiment of the invention.Shown in seeing figures.1.and.2, method comprises the following steps:
Step 201, carries the signal transmission of indication information to transmitting terminal 110 from receiving terminal 120 transmission.
Step 202, receives and decodes transport signal at transmitting terminal 110, to verify indication information.
Step 203, judges good authentication at transmitting terminal 110, if so, then enters step 204, otherwise enters step 208.
Step 204, in response to indication information, sends the communicate optical signal comprising communication data from transmitting terminal 110.
Step 205, receives and this communicate optical signal of decoding at receiving terminal 120.
Step 206, continues the communication data of process transmitting terminal at receiving terminal 120.
Step 207, transmitting terminal or receiving terminal standby.
In step 201, indication information preferably can comprise identifying code.Identifying code can be random code.
In step 203, if the failure of checking indication information, flow process enters step 208, means that transmitting terminal 110 does not send communicate optical signal.
The method of the present embodiment usually can be used in the optical communication system of data communication.At this, the communication data in communicate optical signal can be any content.
Fig. 3 illustrates the optical communication method flow chart of second embodiment of the invention.Shown in reference Fig. 1 and Fig. 3, method comprises the following steps:
Step 301, carries the signal transmission of indication information to transmitting terminal 110 from receiving terminal 120 transmission.Indication information comprises identifying code.
Step 302, receives and decodes transport signal at transmitting terminal 110, to verify the indication information comprising identifying code.
Step 303, judges indication information whether good authentication at transmitting terminal 110, if so, then enters step 304, otherwise enter 308.
Step 304, in response to signal transmission, sends the communicate optical signal comprising identifying code and identification code from transmitting terminal 110.
Step 305, receives and this communicate optical signal of decoding at receiving terminal 120.
Step 306, judges that at receiving terminal 120 whether the identifying code comprised in communicate optical signal is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified, enter step 307, otherwise enter step 308.
Step 307, processes the identification code of communicate optical signal to identify transmitting terminal 110 at receiving terminal 120.
Step 308, transmitting terminal or receiving terminal standby.
In step 301, identifying code can be random code.
In step 303, if indication information authentication failed, flow process enters step 308, means that transmitting terminal does not send communicate optical signal.
The present embodiment can be used in various identity authorization system, such as payment system, ticketing system, Antiforge system, gate control system etc.With payment system, the identification code that transmitting terminal 110 sends pays for authority to pay system.With gate control system, the identification code that transmitting terminal 110 sends is for opening gate.
Fig. 4 illustrates the optical communication method flow chart of third embodiment of the invention.Shown in reference Fig. 1 and Fig. 4, method comprises the following steps:
Step 401, carries the signal transmission of indication information to transmitting terminal 110 from receiving terminal 120 transmission.Indication information comprises identifying code.
Step 402, receives and decodes transport signal at transmitting terminal 110, to verify the indication information comprising identifying code.
Step 403, judges indication information whether good authentication at transmitting terminal 110, if so, then enters step 404, otherwise enter 409.
At transmitting terminal 110, step 404, judges whether the access right limit value of transmitting terminal reaches the access level value of receiving terminal 120, if so, enters step 405, otherwise enters step 409.
Step 405, in response to signal transmission, sends the communicate optical signal comprising identifying code and identification code from transmitting terminal 110.
Step 406, receives and this communicate optical signal of decoding at receiving terminal 120.
Step 407, judges that at receiving terminal 120 whether the identifying code comprised in communicate optical signal is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified, enter step 408, otherwise enter step 409.
Step 408, processes the identification code of communicate optical signal to identify transmitting terminal 110 at receiving terminal 120.
Step 409, transmitting terminal 110 or receiving terminal 120 standby.
In step 401, identifying code can be random code.
In step 403, if the unsuccessful checking of indication information, flow process enters step 409, means that transmitting terminal does not send communicate optical signal.
The present embodiment can be used in various identity authorization system, such as payment system, ticketing system, Antiforge system, gate control system etc.With payment system, the identification code that transmitting terminal 110 sends pays for authority to pay system.With gate control system, the identification code that transmitting terminal 110 sends is for opening gate.
The access right limit value of the personnel of access gate inhibition is divided into A1 according to safe class, A2, A3.。。, Am etc.Such as common cleaning worker has the rudimentary A1 of minimum authority, and common employee has permission A2, and administrative support group has permission A3 etc., and highest level manager has highest weight to limit Am.Access level value as the gate inhibition of receiving terminal is also divided into A1, A2, A3.。。, Am etc.Access level value is stored in receiving terminal 120.The access level value of personnel is stored in transmitting terminal 110.The access level value of personnel is only had to reach the access level value of gate inhibition, could opening gate.
Fig. 5 illustrates the optical communication method flow chart of fourth embodiment of the invention.Shown in reference Fig. 1 and Fig. 5, method comprises the following steps:
Step 501, carries the signal transmission of indication information to transmitting terminal 110 from receiving terminal 120 transmission.Indication information comprises identifying code.
Step 502, receives and decodes transport signal at transmitting terminal 110, to verify the indication information comprising identifying code.
Step 503, judges indication information whether good authentication at transmitting terminal 110, if so, then enters step 504, otherwise enter 511.
At transmitting terminal 110, step 504, judges whether the access right limit value of transmitting terminal reaches the access level value of receiving terminal 120, if so, enters step 505, otherwise enters step 511.
Step 505, in response to signal transmission, sends the communicate optical signal comprising identifying code and identification code from transmitting terminal 110.
Step 506, receives and this communicate optical signal of decoding at receiving terminal 120.
Step 507, judges that at receiving terminal 120 whether the identifying code comprised in communicate optical signal is consistent with the identifying code comprised in the signal transmission that this receiving terminal sends, if consistent, be verified, enter step 508, otherwise enter step 511.
Step 508, processes the identification code of communicate optical signal to identify transmitting terminal 110 at receiving terminal 120.
Step 509, carries the signal transmission of logout to transmitting terminal 110 from receiving terminal 120 transmission.This logout can comprise identification code and the proving time of receiving terminal 120.Proving time and the time of receiving terminal by verifying.
Step 510, is transferred to a server at transmitting terminal 110 by this logout that decoding obtains.At this, transmitting terminal 110 optional equipment is needed to have mobile comm unit.
Step 511, transmitting terminal 110 or receiving terminal 120 standby.
In step 501, identifying code can be random code.
In step 503, if extract this identifying code failure, flow process enters step 511, means that transmitting terminal does not send communicate optical signal.
In step 505, if the access right limit value of transmitting terminal does not reach the access level value of receiving terminal 120, flow process enters step 511, means that transmitting terminal does not send communicate optical signal.
In step 507, if checking is not passed through, flow process enters step 511, means that transmitting terminal does not send communicate optical signal.
As step 509,510 replacement, can from receiving terminal 120 directly send carry logout signal transmission to server.
The present embodiment can be used in various identity authorization system, such as payment system, ticketing system, Antiforge system, gate control system etc.With payment system, the identification code that transmitting terminal 110 sends pays for authority to pay system.With gate control system, the identification code that transmitting terminal 110 sends is for opening gate.
The access right limit value of the personnel of access gate inhibition is divided into A1 according to safe class, A2, A3.。。, Am etc.Such as common cleaning worker has the rudimentary A1 of minimum authority, and common employee has permission A2, and administrative support group has permission A3 etc., and highest level manager has highest weight to limit Am.Access level value as the gate inhibition of receiving terminal is also divided into A1, A2, A3.。。, Am etc.Access level value is stored in receiving terminal 120.The access level value of personnel is stored in transmitting terminal 110.The access level value of personnel is only had to reach the access level value of gate inhibition, could opening gate.
Fig. 6 illustrates the structured flowchart of the acoustic communication system of one embodiment of the invention.With reference to shown in Fig. 1, acoustic communication system 600 comprises sound wave transmitting terminal (hereinafter referred to as transmitting terminal) 610 and sound wave receiving terminal (hereinafter referred to as receiving terminal) 620.Transmitting terminal 610 comprises sound wave transmitting element 611 and subsidiary communications receiving element 612.Receiving terminal 620 comprises acoustic receiver unit 621 and subsidiary communications transmitting element 622.
Sound wave transmitting element 611 can be encoded and be sent acoustic communication signals.Acoustic receiver unit 621 can receive and acoustic communication signals of decoding.At this, sound wave preferably uses not at ultrasonic wave or the infrasound of people's ear earshot, to avoid noise.But can moment, sound wave still can use can listen ripple.
Subsidiary communications transmitting element 622 can use frequency range various signal transmission widely, and such as low-frequency electromagnetic wave, radiofrequency signal, infrared signal carry out transmission information.Therefore, subsidiary communications transmitting element 622 may be embodied as low-frequency electromagnetic wave transmitting element, radio frequency unit, WIFI unit, Bluetooth transmission unit, infrared emission unit etc.Subsidiary communications receiving element 612 and subsidiary communications transmitting element 622 with the use of.
According to one embodiment of the invention, before acoustic communication, subsidiary communications transmitting element 622 can send carry indication information signal transmission to subsidiary communications receiving element 612.Subsidiary communications receiving element 612 can receive and this signal transmission of decoding, to verify this indication information.
For the receiving terminal 620 that mate legal in transmitting terminal 610, its indication information sent can be sent out end 110 and be proved to be successful.Like this, the sound wave transmitting element 611 of transmitting terminal 610 in response to indication information, can send the acoustic communication signals comprising communication data.Correspondingly, the acoustic receiver unit 621 of receiving terminal 620 can receive and acoustic communication signals of decoding.
If receiving terminal 620 mates with transmitting terminal 610 is illegal, then the subsidiary communications receiving element 612 of transmitting terminal 610 usually cannot good authentication indication information.So transmitting terminal 610 can not send acoustic communication signals to receiving terminal 620.
In one embodiment, indication information can comprise identifying code.Further, transmitting terminal 610 can also comprise identifying code to return to receiving terminal 620 at acoustic communication signals.Receiving terminal 620 and then judge that whether the identifying code comprised in acoustic communication signals is consistent with the identifying code comprised in the signal transmission that receiving terminal 620 sends self, if consistent, is verified.Like this, receiving terminal 620 just can verify that whether transmitting terminal 610 was legal before the data content of decoding acoustic communication signals.This mode is for the acoustic communication signals content decoded between transmitting terminal 610 and receiving terminal 620, and the illegal means attempting to visit with the transmitting terminal of falseness receiving terminal has good interception.
In the various embodiments of the invention, various algorithm known can be used to guarantee can not cracking of identifying code.Such as, random algorithm is used to obtain random code.
Fig. 7 illustrates the sound wave communication method flow chart of first embodiment of the invention.Shown in reference Fig. 6 and Fig. 7, method comprises the following steps:
Step 701, carries the signal transmission of indication information to transmitting terminal 610 from receiving terminal 620 transmission.
Step 702, receives and decodes transport signal at transmitting terminal 610, to verify indication information.
At transmitting terminal 610, step 703, judges whether indication information is proved to be successful, if so, then enters step 704, otherwise enter 707.
Step 704, in response to signal transmission, sends the acoustic communication signals comprising communication data from transmitting terminal 610.
Step 705, receives and this acoustic communication signals of decoding at receiving terminal 620.
Step 706, continues the communication data of process transmitting terminal at receiving terminal 620.
Step 707, transmitting terminal or receiving terminal standby.
In step 701, identifying code can be random code.
In step 703, if the failure of checking indication information, flow process enters step 707, means that transmitting terminal 610 does not send acoustic communication signals.
The method of the present embodiment can be used in the acoustic communication system of data communication.At this, communication data can be any content.Such as common data, identifying code, identification code etc.
In an embodiment of the present invention, optical communication system or acoustic communication system can be embodied as ticketing system, payment system, Antiforge system or gate control system etc.The transmitting terminal of optical communication system or acoustic communication system may be embodied as portable terminal.This portable terminal can be special equipment, also can be common apparatus.With gate control system, portable terminal can be special photon key, also can be mobile phone, panel computer, wearable device etc.
Various embodiment described herein can be implemented in the computer-readable medium of the such as combination of computer software, hardware or computer software and hardware.For hardware implementation, embodiment described herein can at one or more application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processor (DAPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, be implemented for the selection combination performing other electronic installation of above-mentioned functions or said apparatus.In some circumstances, this kind of embodiment can be implemented by controller.
For implement software, embodiment described herein by such as program module (procedures) sum functions module (functions) etc. independently software module implemented, wherein each module performs one or more function described herein and operation.Software code is implemented by the application software of writing in suitable programming language, can be stored in internal memory, is performed by controller or processor.
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, change or the replacement of various equivalence also can be made when not departing from spirit of the present invention, therefore, as long as all will drop in the scope of claims of the application the change of above-described embodiment, modification in spirit of the present invention.
Claims (17)
1. an optical communication method, comprises the following steps:
Carry the signal transmission of indication information to the transmitting terminal of light from the authentication receiving terminal transmission of light, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this signal transmission;
Receive and this signal transmission of decoding at this transmitting terminal, to verify this indication information, this indication information comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, before sending this communicate optical signal from this transmitting terminal, be also included in this transmitting terminal and determine that the access right limit value of this transmitting terminal reaches this access level value;
If verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this transmitting terminal does not send communicate optical signal;
If verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then in response to this indication information, communicate optical signal is sent to this authentication receiving terminal from this transmitting terminal, this communicate optical signal carries communication data, identifying code and identification code, receive and this communicate optical signal of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in this communicate optical signal and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal; Wherein, this transmitting terminal utilizes the flicker of light source to send visible light communication signal.
2. optical communication method as claimed in claim 1, it is characterized in that, this identifying code is random code.
3. optical communication method as claimed in claim 1, is characterized in that, after being verified, also comprise: carry the signal transmission of logout to this transmitting terminal from the transmission of this receiving terminal, this logout comprises identification code and the proving time of this receiving terminal.
4. optical communication method as claimed in claim 3, is characterized in that, is also included in this transmitting terminal and this logout that decoding obtains is transferred to a server.
5. optical communication method as claimed in claim 1, is characterized in that, after being verified, also comprise: carry the signal transmission of logout to server from the transmission of this receiving terminal, this logout comprises identification code and the proving time of this receiving terminal.
6. optical communication method as claimed in claim 1, it is characterized in that, this signal transmission is acoustic signals, low frequency signal, radiofrequency signal or infrared signal.
7. a sound wave communication method, comprises the following steps:
Carry the signal transmission of indication information to the transmitting terminal of sound wave from the authentication receiving terminal transmission of sound wave, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this signal transmission;
Receive and this signal transmission of decoding at this transmitting terminal, to verify this indication information, this indication information comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, before sending this acoustic communication signals from this transmitting terminal, be also included in this transmitting terminal and determine that the access right limit value of this transmitting terminal reaches this access level value;
If verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this transmitting terminal does not send acoustic communication signals;
If verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then in response to this indication information, send from this transmitting terminal and comprise acoustic communication signals to this authentication receiving terminal, this acoustic communication signals carries communication data, identifying code and identification code, receive and this acoustic communication signals of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in acoustic communication signals and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal.
8. sound wave communication method as claimed in claim 7, it is characterized in that, this acoustic communication signals is ultrasonic signal, can listens ripple signal or infrasound signal.
9. an optical communication system, comprising:
Transmitting terminal, comprises light transmitting element and subsidiary communications receiving element;
Authentication receiving terminal, comprises light receiving unit and subsidiary communications transmitting element;
Wherein this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, specifically comprises: send this signal transmission in response to an operation instruction, or sends this signal transmission continuously, or interval sends this signal transmission; This subsidiary communications receiving element is used for receiving and this signal transmission of decoding, to verify this indication information, this indication information comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, this light transmitting element also determines whether the access right limit value of this transmitting terminal reaches this access level value;
If verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this light transmitting element does not send communicate optical signal;
If verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then this light transmitting element is used in response to this indication information, transmission comprises communicate optical signal to this light receiving unit, this communicate optical signal carries communication data, identifying code and identification code, this light receiving unit is also for receiving and this communicate optical signal of decoding, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in communicate optical signal and this authentication receiving terminal send is consistent, if consistent, is verified; After being verified, this light receiving unit also processes this identification code to identify this transmitting terminal;
Wherein, described transmitting terminal utilizes the flicker of light source to send visible light communication signal.
10. optical communication system as claimed in claim 9, it is characterized in that, after being verified, the transmission of this subsidiary communications transmitting element carries the signal transmission of logout to this subsidiary communications receiving element, and this logout comprises identification code and the proving time of this receiving terminal.
11. optical communication systems as claimed in claim 9, it is characterized in that, this signal transmission is acoustic signals, low frequency signal, radiofrequency signal or infrared signal.
12. optical communication systems as claimed in claim 9, it is characterized in that, this optical communication system is ticketing system, payment system, Antiforge system or gate control system.
13. 1 kinds of acoustic communication systems, comprising:
Transmitting terminal, comprises sound wave transmitting element and subsidiary communications receiving element;
Authentication receiving terminal, comprises acoustic receiver unit and subsidiary communications transmitting element;
Wherein this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this signal transmission, this subsidiary communications receiving element is used for receiving and this signal transmission of decoding, to verify this indication information, this indication information comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, this sound wave transmitting element also determines whether the access right limit value of this transmitting terminal reaches this access level value;
If verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this sound wave transmitting element does not send acoustic communication signals;
If verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then; This sound wave transmitting element is used in response to this indication information, transmission comprises acoustic communication signals to this acoustic receiver unit, this acoustic communication signals carries communication data, identifying code and identification code, receive and this acoustic communication signals of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in acoustic communication signals and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal.
The transmitting terminal of 14. 1 kinds of optical communication systems, comprise light transmitting element and subsidiary communications receiving element, this subsidiary communications receiving element is for receiving and decoding from the signal transmission carrying indication information of the authentication receiving terminal of optical communication system, to verify this indication information; This light transmitting element is used in response to this indication information, and this indication information comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, and this light transmitting element also determines whether the access right limit value of this transmitting terminal reaches this access level value; If verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this light transmitting element does not send communicate optical signal; If verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then send communicate optical signal to this authentication receiving terminal, this communicate optical signal comprises communication data, identifying code and identification code, receive and this communicate optical signal of decoding at this receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in communicate optical signal and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal;
Wherein, described transmitting terminal utilizes the flicker of light source to send visible light communication signal.
The authentication receiving terminal of 15. 1 kinds of optical communication systems, comprise light receiving unit and subsidiary communications transmitting element, this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this signal transmission, this indication information comprises identifying code; This light receiving unit is for receiving and decoding from the communicate optical signal sent in response to this indication information of a transmitting terminal, this communicate optical signal comprises communication data, identifying code and identification code, receive and this communicate optical signal of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in communicate optical signal and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal.
The transmitting terminal of 16. 1 kinds of acoustic communication systems, comprise sound wave transmitting element and subsidiary communications receiving element, this subsidiary communications receiving element is for receiving and decoding from the signal transmission carrying indication information of the authentication receiving terminal of acoustic communication system, this indication information is extracted to verify, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this signal transmission, this indication information comprises identifying code; This sound wave transmitting element is used in response to this signal transmission, send acoustic communication signals to this authentication receiving terminal, this acoustic communication signals comprises communication data, identifying code and identification code, receive and this acoustic communication signals of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in acoustic communication signals and this authentication receiving terminal send is consistent, if consistent, is verified; And after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal.
The authentication receiving terminal of 17. 1 kinds of acoustic communication systems, comprise acoustic receiver unit and subsidiary communications transmitting element, this subsidiary communications transmitting element is for sending the signal transmission carrying indication information, specifically comprise: send this signal transmission in response to an operation instruction, or send this signal transmission continuously, or interval sends this indication information of this signal transmission and comprises identifying code, or this signal transmission also carries the access level value of this receiving terminal, this sound wave transmitting element also determines whether the access right limit value of this transmitting terminal reaches this access level value, if verify the failure of this indication information, if or the access right limit value of this transmitting terminal do not reach this access level value, then this sound wave transmitting element does not send acoustic communication signals, if verify that the access right limit value of this indication information success or transmitting terminal reaches the access level value of authentication receiving terminal, then this acoustic receiver unit is for receiving and decoding from the acoustic communication signals sent in response to this indication information of a transmitting terminal, this acoustic communication signals comprises communication data, identifying code and identification code, receive and this acoustic communication signals of decoding at this authentication receiving terminal, and whether the identifying code comprised in judging the signal transmission that the identifying code that comprises in acoustic communication signals and this authentication receiving terminal send is consistent, if consistent, be verified, and after being verified, in this this identification code of authentication receiving terminal process to identify this transmitting terminal.
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