CN2384388Y

CN2384388Y - Loss preventing device for mobile telephone

Info

Publication number: CN2384388Y
Application number: CN99208489U
Authority: CN
Inventors: 方志平
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-01
Filing date: 1999-04-01
Publication date: 2000-06-21
Anticipated expiration: 2009-04-01

Abstract

The utility model relates to a loss preventing device for a mobile phone, which mainly comprises a transmitter arranged on the mobile phone and a receiving alarm, wherein, the transmitter can send out a detecting signal at a specific time interval, and the signal is received by the receiving alarm. When the mobile phone is not away from an owner, the detecting signal can be received by the receiving alarm which resets an internal timer to maintain a stand-by state; when the mobile phone is a certain distance away from the owner, the receiving alarm can start up an alarm to inform the owner because the detecting signal of the transmitter can not be effectively received so as to prevent the mobile phone being lost.

Description

Mobile phone prevents to lose device

The utility model is that a kind of mobile phone prevents to lose device, refer to especially a kind of can when mobile phone leaves the machine master and reaches certain distance at one's side, produce alert notification machine master prevent to lose device.

Mobile phone generally downgrades because of price, makes it no longer to be regarded as a kind of luxurious product that move, and becomes a kind of general individual electrical appliance gradually.Sale by existing market it seems that the popularity rate of mobile phone may be created the peak repeatly.

Because brisk market, mobile phone the dealer constantly weed out the old and bring forth the new, and also dwindles on volume as far as possible, conveniently to carry, both advantageous and disadvantageous, though small and exquisite mobile phone is convenient for carrying, accidentally just might lose, although the telephone bandset price declines to a great extent, just general consumption market, it still belongs to the high price product, if lose accidentally, except that loss is not little, all store a large amount of talk-back in the general mobile phone, it will cause machine master's greatest puzzlement once loss.

Therefore, the utility model main purpose is to provide a kind of removable phone to leave and can produces when the machine master reaches certain distance at one's side that alert notification machine master's prevents to lose device.

The technical solution of the utility model is to provide a kind of mobile phone to prevent to lose device, it includes: one is located at the reflector on the telephone bandset, the one receiving alarm device of carrying by the machine master, it is characterized in that: this reflector inside has a self-clocking and finishes back both encoder of timing of outupt coded signal automatically in timing, and one receive this regularly both the code signal of encoder output with the radiating circuit of the detection signal of intermittent transmission coding periodically.

Aforesaid mobile phone prevents to lose device, it is characterized in that: this receiving alarm device includes the receiving circuit of the detection signal of the described radiating circuit emission of a reception, the detection signal that a pair of receiving circuit received carries out the waveform shaping circuit of waveform shaping, signal after a pair of waveform shaping circuit shaping is decoded and is differentiated and comprise the processor of a timer and a circuit for alarming etc., wherein: when the receiving alarm device normally receives the detection signal of reflector, the processor timer of will resetting automatically, when treating normally to receive detection signal, then will start timer and behind certain hour, touch circuit for alarming.

Aforesaid mobile phone prevents to lose device, it is characterized in that: this circuit for alarming is made up of the buzzer that a transistor and this transistor are driven.

Aforesaid mobile phone prevents to lose device, it is characterized in that: this reflector is the battery supplied working power by telephone bandset.

Whether characteristics of the present utility model are: can detect mobile phone handsets exactly with this design and attend upon one's elder and betters in the machine master at one's side, because the reflector of setting up on the mobile phone, its signal only can be contained small area, when leaving the machine master, it reaches certain distance by the side of, promptly possible separating signal coverage area, it is once breaking away from this specific region, machine master receiving alarm device at one's side promptly produces alarm and is warned, and the prompting by alarm song, the machine master of making can be careful its mobile phone place at any time, takes place with the situation of effectively avoiding losing mobile phone.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1: be circuit block diagram of the present utility model.

Fig. 2: the detailed circuit diagram that is the utility model reflector.

Fig. 3: the detailed circuit diagram that is the utility model receiving alarm device.

Fig. 4: the workflow diagram that is the utility model reflector.

Fig. 5: the workflow diagram that is the utility model receiving alarm device.

The utility model mainly is to establish a high-frequency signal reflector on the mobile phone of mobile phone, the detection signal of its emission is to be received by a receiving alarm device, this receiving alarm device is then carried by the mobile phone master, utilize the adjustment of signal strength signal intensity again, make the detection signal of reflector emission only can contain one among a small circle, reflector on mobile phone and machine master receiving alarm device standoff distance on one's body exceeds aforesaid signal covering scope, the receiving alarm device will produce alarm song with the announcement machine master, to reach the purpose of reminding and preventing to lose.

The structure of relevant aforementioned reflector and receiving alarm device at first sees also shown in Figure 1, this reflector 10 includes timing and an encoder 11 and a radiating circuit 12, the working power of this timing and encoder 11 and radiating circuit 12 is supplied by battery of mobile phone, its detailed circuit sees also shown in Figure 2, wherein:

This timing and encoder 11 have the function of self-clocking and coding, wherein self-clocking function is to make transmitting of reflector 10 non-standings, but with specific intermittent the transmitting of timing spacing, in present embodiment, this timing and encoder 11 produce the time base of a signal as timer by internal oscillator in per second, treat that timing is an autocoding after finishing, and is launched by radiating circuit 12 to modulate transmitting of a specific cryptosystem.Because utilize coded system to produce password, its cipher code set number can reach more than ten million group, do not receive so do not influence the normal transmission of mobile phone, and do not have signal interference problem.

Utilize aforementioned self-clocking function not only can keep reflector 10 normal transmission detection signals again, more transmit simultaneously, can effectively reduce power consumption because of intermittent.

Still see also shown in Figure 1ly, this receiving alarm device 20 includes a receiving circuit 21, a waveform shaping circuit 22, a processor 23 and a circuit for alarming 24 etc.; Its detailed circuit sees also shown in Figure 3, and wherein: this receiving circuit 21 is that the detection signal of its reception is promptly sent into waveform shaping circuit 22 and carried out signal shaping for the high frequency detection signal that receives reflector 10 emissions, sends into processor 23 differentiation of decoding subsequently.

This processor 23 is mainly providing decoding to differentiate and timer function, and utilize the decoding discrimination result to determine whether to reset timer, differentiating the result when decoding conforms to, processor 23 is reset timer by the internal work flow process, as decode and differentiate the result and be not inconsistent receiving circuit 21 and will do not produce a signal voluntarily during received signal, still after signal shaping, deliver to processor 23 differentiation of decoding, but this signal and processor 23 (in establish password different), then start timer function, behind certain hour, touch circuit for alarming 24 automatically, producing alarm song announcement machine master, and this timer function is mainly and prevents misoperation.

In present embodiment, this circuit for alarming 24 mainly is to utilize a transistor 241 to drive a buzzer 242, when processor 23 is exported high potential on corresponding pin, even transistor 241 conductings, and touch buzzer 242 and produce alarm songs.

Can find out physical circuit structure of the present utility model through above-mentioned explanation, sincerely cooperate flow chart to describe in detail as the back as for its working method: at first to see also shown in Figure 4, workflow for reflector 10, mainly be after system start-up and finishing initial setting, reflector 10 will start inner timer voluntarily, whether timing finishes to judge timer subsequently, do not finish timing and promptly continue timing, as finish timing and then start encoding function, and send the detection signal of specific coding via radiating circuit 12 modulations, return timer function subsequently with periodic duty.Seeing also Fig. 5 again shows, its exposure has the workflow of set processor 23 in the receiving alarm device 20, after system start-up and finishing initial setting, starting timer immediately picks up counting, simultaneously by receiving circuit 21 and waveform shaping circuit 22 received signals and give and send into processor 23 differentiation of decoding after shaping is handled, differentiate when correct when the password that solves, promptly remove the clocking capability of timer internal; Otherwise as the password that solves differentiates when not being inconsistent, and then do not do to remove the action of resetting, and whether timing finishes to differentiate timer immediately, and finishing as timing is that output signal is touched circuit for alarming 24 and produced alarms.

Claims

1, a kind of mobile phone prevents to lose device, it includes: one is located at the reflector on the telephone bandset, the one receiving alarm device of carrying by the machine master, it is characterized in that: this reflector inside has a self-clocking and finishes back both encoder of timing of outupt coded signal automatically in timing, and one receive this regularly both the code signal of encoder output with the radiating circuit of the detection signal of intermittent transmission coding periodically.

2, mobile phone according to claim 1 prevents to lose device, it is characterized in that: this receiving alarm device includes the receiving circuit of the detection signal of the described radiating circuit emission of a reception, the detection signal that a pair of receiving circuit received carries out the waveform shaping circuit of waveform shaping, signal after a pair of waveform shaping circuit shaping is decoded and is differentiated and comprise the processor of a timer and a circuit for alarming etc., wherein: when the receiving alarm device normally receives the detection signal of reflector, the processor timer of will resetting automatically, when treating normally to receive detection signal, then will start timer and behind certain hour, touch circuit for alarming.

3, mobile phone according to claim 2 prevents to lose device, it is characterized in that: this circuit for alarming is made up of the buzzer that a transistor and this transistor are driven.

4, mobile phone according to claim 1 prevents to lose device, it is characterized in that: this reflector is the battery supplied working power by telephone bandset.