CN101237479A - Active miss prevention system and method for handheld device - Google Patents
Active miss prevention system and method for handheld device Download PDFInfo
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- CN101237479A CN101237479A CNA2008100141926A CN200810014192A CN101237479A CN 101237479 A CN101237479 A CN 101237479A CN A2008100141926 A CNA2008100141926 A CN A2008100141926A CN 200810014192 A CN200810014192 A CN 200810014192A CN 101237479 A CN101237479 A CN 101237479A
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Abstract
The invention discloses an active anti-loss system and an anti-loss method for a handheld device, comprising a handheld device and a short-distance wireless communication device for communicating with the handheld device, wherein the handheld device or the short-distance wireless communication device output an alarm when detecting that the signal intensity in between reaches a set threshold value, so that when moving away from the short-distance wireless communication device, the handheld device output an alarm to remind an owner of the loss of the handheld device. The method conducts real time detection of the distance between the handheld device and the short-distance communication device such as a Bluetooth device, an infrared device, etc. and actively outputs an alarm when the distance goes beyond a threshold value to remind the owner to prevent the handheld device from being lost, thereby reducing the risks of losing the handheld device. The active anti-loss method can not only prevent the handheld device from being stolen, but also prevent the handheld device from being stolen due to the carelessness of the owner.
Description
Technical field
The invention belongs to device security guard technology field, specifically, relate to a kind of method and system that prevent that handheld device from losing.
Background technology
Along with the continuous development of handheld device, the function that can realize is more and more, not only becomes user's multimedia recreation instrument, but also has the function of preserving subscriber information message.Particularly the mobile communication handheld device as the mobile phone had both been brought use flexible to the user, had brought great riches to people again.Handheld device lose the loss of for the machine master, being not only economically, and its inner data of preserving lose the loss that brings may be bigger.Therefore, the anti-function of losing that how to realize handheld device has become the problem that present numerous developers and consumer more and more pay close attention to.
At present, the anti-method of losing that is applied to mobile phone is more common, generally all be to adopt to be realized based on the method that remedies afterwards, such as: the mode that password is set by employing comes limiting handset to change SIM card or start, thereby makes the thief can't use stolen mobile phone; Also or by adopting in advance return, can not lose or the like with the hand-set data of guaranteeing the machine master to binding mobile phone with the mode of certain phone number binding inside information with lost mobile phone.These anti-methods of losing all adopt passive means to realize, therefore belong to the passive anti-method of losing.Though these passive anti-losses that method can reduce the machine master to a certain extent of losing, and steal desire by the containment thief and reduce the risk that handheld device is lost; But handheld device itself is to have lost after all, makes machine master's loss to avoid thus.
Summary of the invention
The present invention adopts the passive anti-problem that still there is big risk of missing in method of losing in order to solve existing cell phone apparatus, a kind of anti-method of losing of active of handheld device is provided, by detecting the distance between handheld device and the short-distance wireless communication equipment, and when described distance surpasses threshold value, send to report to the police and point out the machine primary attention, effectively prevent the handheld device loss thereby reached, avoid the purpose of design of machine master loss.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The initiatively anti-method of losing of a kind of handheld device, comprise handheld device and with the short-distance wireless communication equipment of its communication, described handheld device or short-distance wireless communication equipment is output alarm when the threshold value that the signal strength signal intensity that detects between the two arrive to be set, and then reminds machine master with anti-lost by output alarm in handheld device during away from short-distance wireless communication equipment.
Further, described handheld device or short-distance wireless communication equipment receive the safe distance set point of user's input, and then the table of comparisons of corresponding relation is determined described threshold value between equipment room distance by its storage inside and the signal strength signal intensity.
Further again, described handheld device or short-distance wireless communication equipment adopt bell sound or mode of vibration output alarm.
Preferably, test by the safe distance set point of described handheld device reception user input with to the equipment room signal strength signal intensity; Described handheld device output alarm or send control signal to described short-distance wireless communication equipment when detecting signal strength signal intensity and be lower than the threshold value of setting is by described short-distance wireless communication equipment output alarm.
Wherein, described short-distance wireless communication equipment can be bluetooth earphone or infrared signal transceiver etc.
Based on the anti-method of losing of above-mentioned active, the present invention has proposed initiatively anti-lose system of a kind of handheld device again, comprise handheld device and with the short-distance wireless communication equipment of its communication; Described handheld device and short-distance wireless communication equipment carry out communication by the short-range wireless communication module that is provided with separately; And, signalization intensity detection module in the described handheld device, when described signal strength detection module detects the threshold value of the signal strength signal intensity arrival setting between the equipment, control the warning circuit output alarm in its inside or the described short-distance wireless communication equipment.
Preferably, adopt described handheld device to come signal strength signal intensity between the checkout equipment.Specifically, in described handheld device, mainly comprise with the lower part:
Input module receives the safe distance set point of user's input, and then converts corresponding data-signal output to;
Primary processor receives the data-signal of described input module output, and searches the table of comparisons of corresponding relation between the equipment room distance of storage in advance and the signal strength signal intensity according to described data-signal, and then determines described threshold value;
Short-range wireless communication module receives the wireless signal that short-distance wireless communication equipment sends, and is converted into digital signal and exports primary processor to; Perhaps receive data-signal, and be converted into wireless signal and be sent to short-distance wireless communication equipment from primary processor;
The signal strength detection module, receive the threshold value of described primary processor output, when the signal strength signal intensity that detects short-distance wireless communication equipment is lower than described threshold value, generate control signal and transfer to the warning circuit output alarm or export short-distance wireless communication equipment to, and then control the warning circuit output alarm in the described short-distance wireless communication equipment by short-range wireless communication module.
Preferably, the short-range wireless communication module in the described short-distance wireless communication equipment is uninterruptedly launched short range radio signals and is detected to judge whether to arrive the threshold value of described setting for the signal strength detection module in the described handheld device.
Preferably, described handheld device is a mobile phone, described primary processor is the baseband chip in the mobile phone, described signal strength detection module is built in the described baseband chip, described baseband chip connects its inner short-range wireless communication module, with the wireless telecommunications between realization and the short-distance wireless communication equipment; The warning circuit of described signal strength detection inside modules is the bell sound output circuit or the vibrating circuit of mobile phone inside.
Further, described short-distance wireless communication equipment is bluetooth earphone or infrared signal transceiver; Warning circuit in the described short-distance wireless communication equipment is audio output circuit or the vibrating circuit that is arranged in described bluetooth earphone or the infrared signal transceiver.
Compared with prior art, advantage of the present invention and good effect are: the present invention is by detecting in real time the distance between handheld device and bluetooth, the short-distance wireless communication equipment such as infrared, and adopt when distance surpasses threshold value betwixt initiatively the mode of output alarm to remind the machine primary attention, preventing that handheld device from losing, thereby greatly reduce the risk that handheld device is lost.This active prevents that losing method can prevent effectively that not only handheld device is stolen, also can prevent the careless loss that causes owing to the machine master simultaneously.
Description of drawings
Fig. 1 is the theory diagram of handheld device and short-distance wireless communication device interior circuit;
Fig. 2 is the theory diagram of Fig. 1 medium or short range wireless communication module internal circuit;
Fig. 3 is the theory diagram of mobile phone and short-distance wireless communication device interior circuit;
Fig. 4 is the initiatively workflow diagram of anti-lose system of handheld device.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
So-called handheld device is initiatively anti-loses, and is meant to lose in the process in handheld device initiatively to remind the machine primary attention by warning system, thereby reduces to the risk that handheld device is lost minimum.The disclosed handheld device method of initiatively preventing losing need be bound a short-distance wireless communication equipment to handheld device and be assisted it to finish, portable communications instruments such as bluetooth earphone that the present handheld device user of described short-distance wireless communication equipment can specifically selecting for use adopts usually or infrared signal transceiver are realized, judge between the two distance by the signal strength signal intensity between real-time detection handheld device and the short-distance wireless communication equipment, signal strength signal intensity judges with the characteristic that the increase of distance between the equipment decays whether the distance between handheld device and the machine master is in safe distance when utilizing radio communication, and when being reduced to the threshold value of setting, signal strength signal intensity starts warning system detecting, remind the machine primary attention by modes such as handheld device or short-distance wireless communication equipment jingle bell or vibrations, in case handheld device is lost.
Embodiment one, and referring to shown in Figure 1, present embodiment has specifically been set forth initiatively a kind of implementation structure of anti-lose system of described handheld device.Wherein, in described handheld device, mainly comprise: input module, primary processor, short-range wireless communication module, signal strength detection module and warning circuit etc.; With the short-distance wireless communication equipment of its communication in then include major parts such as short-range wireless communication module, MCU and warning circuit.
Described handheld device receives the safe distance set point of user's input by input module, and then converts corresponding data-signal to and export primary processor to; Described primary processor is searched the table of comparisons of corresponding relation between the equipment room distance that is stored in advance in its inside or the storage chip and the signal strength signal intensity according to the data-signal that receives, and then the threshold value of definite signal strength signal intensity, and described threshold value is defined as the threshold value that the user sets transfers to the signal strength detection module.In the process of handheld device and the work of short-distance wireless communication equipment collaboration, realize the real-time Transmission of wireless signal between two equipment by short-range wireless communication module, being handheld device receives the wireless signal that short-distance wireless communication equipment sends by its inner short-range wireless communication module, and exports primary processor to after its demodulation is converted to digital signal; Perhaps receiving the data-signal from primary processor output, such as audio signal, control signal or the like, and is that wireless signal is sent to short-distance wireless communication equipment with its modulation conversion; Its inner short-range wireless communication module of described short-distance wireless communication equipment utilization is realized modulation, the demodulation to wireless signal, and then realizes the broadcast of audio signal or to the processing output of user's operational order under the control action of MCU.Meanwhile, signal strength detection module in the handheld device is by the real-time signal strength signal intensity that detects between two equipment of short-range wireless communication module, when the signal strength signal intensity that detects short-distance wireless communication equipment is lower than its threshold value that receives, be distance between handheld device and the short-distance wireless communication equipment when surpassing the safe distance set point of user's input, generate control signal and start warning circuit and report to the police to the machine master.The mode of reporting to the police can be divided into by the direct warning of handheld device with by short-distance wireless communication equipment alarm dual mode.Handheld device can be reported to the police to the machine master by the mode of the tinkle of bells (comprising MP3 and true man's sound) or vibration; The also short-distance wireless communication equipment that can carry by the machine master is such as bluetooth earphone or the infrared signal transceiver carries out audio alert or the short-distance wireless communication vibration equipment is reported to the police.At this moment, handheld device need export alarm control signal to short-distance wireless communication equipment by short-range wireless communication module, and then in short-distance wireless communication equipment under the control action of MCU, utilize its internal alarm circuit output alarm, and then cause machine master's attention, realize the anti-function of losing of active of handheld device.
Fig. 2 is the internal circuit theory diagram of short-range wireless communication module, comprise wireless transmission chip, wireless receiving chip, communication protocol processing and control chip, power supply, crystal oscillator and with the interface circuit of system control chip (in handheld device, specifically refer to described primary processor, and in short-distance wireless communication equipment, specifically refer to described MCU) connection etc.Wherein, described communication protocol handle and control chip according to and the short-distance wireless communication equipment bound of handheld device different and concrete selection.
When adopting bluetooth earphone as described short-distance wireless communication equipment, described communication protocol is handled and control chip is a Bluetooth chip, is mainly used to handle Bluetooth communication protocol, and responsiblely communicates by letter with system control chip.Crystal oscillator provides clock for Bluetooth system; The wireless transmission chip is converted into analog signal with the output of Bluetooth chip, is gone out by antenna transmission again; The wireless receiving chip is converted into digital signal with the bluetooth analog signal that receives, and carries out subsequent treatment by Bluetooth chip; Power supply provides operating voltage and interface power supply etc. for Bluetooth chip; The circuit of building by resistance and electric capacity play as filtering, voltage stabilizing, on draw, effect such as drop-down.When the active of needs startup handheld device is prevented losing function, open the function of Bluetooth communication of handheld device, at this moment, handheld device begins to detect the Bluetooth signal intensity of bluetooth earphone, and then realizes the real-time detection of distance between handheld device and the bluetooth earphone.
If wish by the bluetooth earphone output alarm, the vibrating circuit that then need in bluetooth earphone, set up the audio output circuit formed by audio frequency control module and loud speaker or form by motor and cam etc., and then adopt modes such as output voice or vibration to machine master output alarm.Because bluetooth earphone itself promptly has audio output function, thereby preferably adopt the speech form output alarm, at this moment, only need in bluetooth earphone, to set up loud speaker, utilize in the bluetooth earphone existing audio frequency control module that it is controlled, can realize the earphone warning function.
When adopting the infrared signal transceiver, the design of infrared signal transceiver can held on the waist folder of handheld device as described short-distance wireless communication equipment.Install shielding wireless radiation device at waist folder additional near a side of human body, as metallic plate etc., to reduce infrared equipment on the waist folder to the wireless radiation of human body.At this moment, described communication protocol is handled and control chip is infrared chip, is mainly used to handle infrared communication protocol, and responsible and system control chip communicates.Crystal oscillator provides clock for infrared chip; The wireless transmission chip is converted into analog signal with the output of infrared chip, is gone out by antenna transmission again; The wireless receiving chip is converted into digital signal with the infrared simulation signal that receives, and carries out subsequent treatment by infrared chip; Power supply provides operating voltage and interface power supply etc. for infrared chip; The circuit of building by resistance and electric capacity play as filtering, voltage stabilizing, on draw, effect such as drop-down.When handheld device being suspended to the waist folder, open the infrared of waist folder and handheld device, lose function so that the active that starts handheld device is anti-, at this moment, handheld device begins to detect the infrared signal intensity on the waist folder, and then realizes the real-time detection of distance between handheld device and the waist folder.
If wish then need in the infrared signal transceiver, set up audio output circuit or vibrating circuit etc., and then adopt modes such as output voice or vibration to machine master output alarm by infrared signal transceiver output alarm.Because the infrared signal transceiver is designed on the waist folder, thereby preferably adopts the mode of vibration output alarm, to make things convenient for machine master perception alarm signal.Described vibrating circuit can specifically adopt motor and cam to set up and form, and by the MCU in the infrared signal transceiver startup and the rotating speed of motor is controlled, and with the driving cam rotation, and then drives waist folder vibration alarming.
Certainly, described short-distance wireless communication equipment does not exceed with above-mentioned bluetooth earphone and infrared signal transceiver, can adopt based on the portable communication device of other wireless communication protocol yet and realize, the invention is not restricted to this.
Embodiment two, referring to shown in Figure 3, present embodiment is wherein a kind of circuit composition form that example is specifically set forth handheld device with the mobile phone, mainly comprises: input module, baseband chip, audio frequency control module, loud speaker, microphone, camera (Camera sensor), camera (Camera) chip, short-range wireless communication module and NAND FLASH, SDRAM memory etc.Wherein, core cell as mobile phone inside---baseband chip is finished the task of primary processor in the described handheld device, receive the less radio-frequency RF signal of base station, and it is demodulated into digital signal exports the audio frequency control module to control loudspeaker output incoming bell sound or the other side's voice; After the voice signal that sends for the cellphone subscriber receives by microphone, after being converted to digital data transmission to baseband chip under the effect of audio frequency control module and handling, and then be modulated to less radio-frequency RF signal and be transmitted into the base station.Input module receives the operational order that the cellphone subscriber keys in, and transfers to baseband chip with control machine system response user operation.With the mobile phone of camera, by setting up camera chip, and then under the control action of baseband chip, realize the catching of video image, processing and hold function for band in mobile phone inside.NAND FLASH memory that is connected with baseband chip and SDRAM memory are stored the data that produce in the working procedure of baseband chip and the baseband chip course of work respectively.
In order to realize the signal transmission between mobile phone and the outside short-distance wireless communication equipment (such as portable communication devices such as bluetooth earphone, infrared signal transceivers), also be provided with the short-range wireless communication module that can carry out transmission of wireless signals in described mobile phone inside with short-distance wireless communication equipment.Described short-range wireless communication module can be based on the communication module of Bluetooth protocol or infrared protocol, connect described baseband chip, the data-signal (such as voice signal or control signal etc.) that baseband chip produces can be modulated on the one hand, and then export short-distance wireless communication equipment to and export; Can carry out demodulation process to the wireless signal (such as control signals such as off-hook, on-hook, user speech or volume adjustings) of short-distance wireless communication equipment output on the other hand, handle to export baseband chip to, and then control its inside function circuit is carried out corresponding operating.In described baseband chip, be built-in with the signal strength detection module, be that described baseband chip has the signal strength detection function, when bluetooth that starts mobile phone or radio communication function such as infrared, the signal strength signal intensity between detection of handset and the short-distance wireless communication equipment in real time.This function based on baseband chip, and the characteristic that decays with the increase of equipment room distance of signal strength signal intensity, we can set up " initiatively anti-losing " function choosing-item in the function menu of mobile phone, when the cellphone subscriber enables this function, start the radio communication function of mobile phone, and receive the safe distance threshold value that the user sets, and then determine the threshold value of signal strength signal intensity according to the table of comparisons of corresponding relation between equipment room distance of preserving in advance in baseband chip or the SDRAM memory and the signal strength signal intensity by input module.After setting completed, baseband chip in the mobile phone begins the signal strength signal intensity between real-time detection of handset and the short-distance wireless communication equipment, when user's mobile phone during away from short-distance wireless communication equipment, signal strength signal intensity therebetween weakens thereupon, when being reduced to the threshold value of signal strength signal intensity, baseband chip output control signal is reported to the police to the machine master by suitable mode.
Described warning can specifically select by mobile phone alarm or by two kinds of channels of short-distance wireless communication equipment alarm, its type of alarm can adopt modes such as bell sound or vibration to realize.Because present mobile phone all possesses bell sound and vibration output function, therefore, consider the preferred anti-function of losing of active that realizes cell phone apparatus by the mode of mobile phone output alarm that adopts from the angle of simplifying circuit structure, saving cost.At this moment, and can not make any changes in portion's circuit and the software programming within it of the short-distance wireless communication equipment of its communication, realize easily.
There is individual difference in the signal strength signal intensity of handheld device and short-distance wireless communication equipment, and environment also can have influence on the signal strength signal intensity of short-distance wireless communication equipment simultaneously.Moreover (as leave behind bluetooth equipment or for power saving) needs the anti-function of losing of active of open and close handheld device because the machine owner factor that is, adjusts the signal strength threshold of reporting to the police.So just need write the control handheld device and initiatively prevent losing the code of function in the software of handheld device, this part code mainly comprises:
(1) the corresponding relation table of comparisons of distance and change in signal strength when handheld device and short-distance wireless communication apparatus bound;
(2) the anti-unlatching of losing function of handheld device, close;
(3) setting of the threshold value of the anti-signal strength signal intensity of losing function of handheld device;
(4) the anti-type of alarm setting of losing function of handheld device.
Fig. 4 is the initiatively workflow diagram of anti-lose system of handheld device proposed by the invention, specifically may further comprise the steps:
A, active prevent losing the function initialization;
B, whether open " initiatively anti-loses " function; If then carry out following steps; Otherwise, jump to step I;
C, handheld device and short-distance wireless communication apparatus bound promptly start the radio communication function of handheld device;
D, wait for that the user imports the alarm threshold value, promptly the user thinks safe ultimate range threshold value; Perhaps select the threshold value of acquiescence; Also or adopt the threshold value of preserving last time; Such as 80 centimeters or 1 meter etc.;
E, wait user are provided with type of alarm, and promptly the user selects to report to the police still by the short-distance wireless communication equipment alarm by handheld device; And be to adopt bell sound mode to report to the police or adopt mode of vibration warning etc.; Concrete chosen content need specifically be provided with according to the function that handheld device and short-distance wireless communication equipment are disposed when the design; Certainly, also can select type of alarm of giving tacit consent to or the type of alarm that adopts preservation last time;
The table of comparisons of corresponding relation between f, the invocation facility spacing information intensity, and then the threshold value of definite signal strength signal intensity;
G, detect signal strength signal intensity between handheld device and the short-distance wireless communication equipment in real time, when signal intensity attenuation during to the determined threshold value of step f, execution in step h; Otherwise, repeat this step;
The type of alarm output alarm that h, driving warning system are selected according to the user; In alarm procedure, the machine master can be by keying in any button or the special anti-function of losing is closed button and finished to report to the police, and at this moment, system enters new round signal strength detection process;
I, the anti-function subprogram of losing of active finish.
Certainly, also can be by the anti-function of losing of active that described input module and signal strength detection module realize handheld device is set on short-distance wireless communication equipment, but need do bigger change to the internal circuit of short-distance wireless communication equipment, implement more complicated, and be unfavorable for the miniaturization and the portability of short-distance wireless communication equipment.
In addition, in another preferred embodiment of invention short-range wireless communication module internal circuit, it only comprises short-range wireless communication module and is the power module of its power supply, can further reduce cost like this.Described short-distance radio communication module comes to provide detection signal to the signal strength detection module that is arranged in handheld device by continual emission wireless signal.Wherein, described short-range wireless communication module can be Bluetooth transmission chip, infrared head or DSRC (Dedicated Short Range Communication, Dedicated Short Range Communications) communication module or the like.
Should be understood that; the above only is a kind of preferred implementation of the present invention, for those skilled in the art, and under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, the initiatively anti-method of losing of a kind of handheld device, it is characterized in that: comprise handheld device and with the short-distance wireless communication equipment of its communication, described handheld device or short-distance wireless communication equipment is output alarm when detecting between the two signal strength signal intensity and arrive the threshold value of setting.
2, the initiatively anti-method of losing of handheld device according to claim 1, it is characterized in that: described handheld device or short-distance wireless communication equipment receive the safe distance set point of user's input, and then determine described threshold value according to the table of comparisons of corresponding relation between equipment room distance and the signal strength signal intensity.
3, handheld device according to claim 1 is initiatively anti-loses method, and it is characterized in that: described handheld device or short-distance wireless communication equipment adopt bell sound or mode of vibration output alarm.
4, initiatively prevent losing method according to claim 1 or 2 or 3 described handheld devices, it is characterized in that: test by the safe distance set point of described handheld device reception user input with to the equipment room signal strength signal intensity; Described handheld device output alarm or send control signal to described short-distance wireless communication equipment when detecting signal strength signal intensity and be lower than the threshold value of setting is by described short-distance wireless communication equipment output alarm.
5, initiatively prevent losing method according to claim 1 or 2 or 3 described handheld devices, it is characterized in that: described short-distance wireless communication equipment is bluetooth earphone or infrared signal transceiver.
6, a kind of handheld device anti-lose system initiatively is characterized in that: comprise handheld device and with the short-distance wireless communication equipment of its communication; Described handheld device and short-distance wireless communication equipment carry out communication by the short-range wireless communication module that is provided with separately; And, signalization intensity detection module in the described handheld device, when described signal strength detection module detects the threshold value of the signal strength signal intensity arrival setting between the equipment, control the warning circuit output alarm in its inside or the described short-distance wireless communication equipment.
7, handheld device active anti-lose system according to claim 6, it is characterized in that: be provided with input module and primary processor in described handheld device, described input module receives the safe distance set point of user's input, and then converts corresponding data to primary processor; Described primary processor is searched the table of comparisons of corresponding relation between the equipment room distance of storage in advance and the signal strength signal intensity according to the data-signal that receives, and then determines described threshold value.
8, according to claim 6 or 7 described handheld devices active anti-lose systems, it is characterized in that: the short-range wireless communication module in the described short-distance wireless communication equipment is uninterruptedly launched short range radio signals and is detected to judge whether to arrive the threshold value of described setting for the signal strength detection module in the described handheld device.
9, according to claim 6 or 7 described handheld devices active anti-lose systems, it is characterized in that: described handheld device is a mobile phone, described primary processor is the baseband chip in the mobile phone, described signal strength detection module is built in the described baseband chip, described baseband chip connects its inner short-range wireless communication module, with the wireless telecommunications between realization and the short-distance wireless communication equipment; The warning circuit of described signal strength detection inside modules is the bell sound output circuit or the vibrating circuit of mobile phone inside.
10, according to claim 6 or 7 described handheld devices active anti-lose systems, it is characterized in that: described short-distance wireless communication equipment is bluetooth earphone or infrared signal transceiver; Warning circuit in the described short-distance wireless communication equipment is audio output circuit or the vibrating circuit that is arranged in described bluetooth earphone or the infrared signal transceiver.
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2008
- 2008-02-25 CN CNA2008100141926A patent/CN101237479A/en active Pending
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