CN1801009A - Radio-corrected timepiece - Google Patents
Radio-corrected timepiece Download PDFInfo
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- CN1801009A CN1801009A CN 200510136391 CN200510136391A CN1801009A CN 1801009 A CN1801009 A CN 1801009A CN 200510136391 CN200510136391 CN 200510136391 CN 200510136391 A CN200510136391 A CN 200510136391A CN 1801009 A CN1801009 A CN 1801009A
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Abstract
A reception means extracts a time code from a radio signal received by an antenna, thereby outputting it to a control means. The control means obtains an information of a present time instant from the time code extracted by the reception means and corrects a present time instant being clocked by its own clock means. A display means displays the present time instant being clocked by the clock means. In a case where there has been judged that the time code is not outputted from the reception means, the control means controls so as to alter a tuning frequency by altering a capacity value of a variable capacity diode.
Description
Technical field
The present invention relates to radio-corrected timepiece, the time information corrected time that basis receives by radiowave in this radio-corrected timepiece.
Background technology
For a long time, radio-corrected timepiece is developed always, in radio-corrected timepiece, come corrected time automatically by receiving the accurate radio signal constantly of expression.
At present, (for example Germany, Japan, the U.S., Britain etc.) send a kind of long wave standard wave from the radio station that provides in the precalculated position in each country, and time information has superposeed in the long wave standard wave.In Japan, the long wave standard wave of 40kHz and 60kHz is carried out amplitude modulation(PAM) respectively by the timing code form of similar Fig. 4, then they is sent from two cell sites.
Receive the radio-corrected timepiece commercialization of this long wave standard wave, the moment data of position circuit in radio-corrected timepiece.About this radio-corrected timepiece,, need have antenna and tuned circuit for the acceptance criteria ripple.
Fig. 3 is a kind of block diagram of the radio-corrected timepiece that comprises tuned circuit of routine.In Fig. 3, the 301st, antenna, it is caught radio signal and produces received signal.The 302nd, tuned circuit, capacitor wherein in parallel.By means of the inductance value of antenna 301 and the capacitance of tuned circuit 302, just can be tuned to the receive frequency of 40kHz for example.To be input to receiving trap 303 from the signal that antenna circuit is tuned to 40kHz, and output comprises the timing code of current time information.
By the moment format identification device of in control device 304, providing for oneself, just can obtain current time information, by means of the relevant information of current time accurately, just can proofread and correct in control device 304, provide, to constantly carrying out the current time of the clock apparatus of timing, thereby show constantly (in this case by display device 305, the accurate moment after proofreading and correct), this carries out timing by clock apparatus constantly.
Incidentally, by carrying out the opening/closing control of receiving trap 303, the opening/closing control of the reception operation of control device 304 operative norm ripple signals.
In addition, in recent years, about receiving for example radio-corrected timepiece of long wave standard wave in Japan and Germany, the JJY of Japan is 40kHz, 60kHz, the DCF of Germany is 77.5kHz, for timer be tuned to separately frequency, adopted a kind of method (referring to the JP-A-2002-82187 communique) of coming switching frequency by the capacitor that connects a plurality of parts.
In the above construction, adjustment about the receiving sensitivity of tuned circuit, adopt this a kind of method prepared in the multiple capacitor of in tuned circuit, using, when the electric capacity of capacitor is consistent with each inductance of bar antenna, judged the electric capacity of capacitor.
In above-mentioned reception susceptibility method of adjustment, about changing the method for condenser capacitance, owing to carry out adjustment by making up a plurality of capacitors, therefore the assembly work of radio-corrected timepiece just becomes pretty troublesome, so that have the low problem of work efficiency, this is owing to need long time to carry out above-mentioned adjustment.
And because bar antenna is relatively little dimensionally, and has high Q value, only by the minor alteration in temperature change and the element, such as under the situation that has contiguous metal, tuned frequency will change a lot.For this reason, in above-mentioned reception susceptibility method of adjustment, even in case be adjusted to tuning state, the possibility that becomes the nonresonant state after in being delivered to user's hand is very high, so that has the susceptibility problem of deterioration that becomes that receives.
Generation of the present invention is exactly in order to solve top problem, solve it problem in case can be easily be tuned to the standard wave signal.
And, solve problem of the present invention so as can be tuned to the different a plurality of standard wave signals of frequency.
And, solve problem of the present invention, so that can simply carry out assembly work.
Summary of the invention
According to the present invention, a kind of radio-corrected timepiece is provided, it is characterized in that comprising: antenna, it is used to receive the radio signal that comprises the timing code with current time information; Tuner, it has variable capacity device, and this tuner output is corresponding to the signal of the radio signal of antenna reception; Receiving trap, it from the signal of tuner output extraction time sign indicating number; The time correction device, it obtains the information of current time from the timing code that receiving trap extracts, thereby proofreaies and correct the current time by it self clock apparatus timing; Display device, it is used to show the current time by the clock apparatus timing; And control device, judging that not under the situation of receiving trap output time sign indicating number it is controlled so that change the tuned frequency of tuner by the capacitance that changes variable capacity device.
Has the radio signal that the signal of the tuner output of variable capacity device receives corresponding to antenna.Receiving trap from the signal of tuner output extraction time sign indicating number.This time correction device obtains the information of current time from the timing code that receiving trap extracts, thereby proofreaies and correct the current time by it self clock apparatus timing.Display device shows the current time by the clock apparatus timing.Judging that not under the situation of receiving trap output time sign indicating number control device is controlled so that change the tuned frequency of tuner by the capacitance that changes variable capacity device.
In this, can construct and make receiving trap have filter apparatus and pick-up unit, this filter apparatus make a plurality of frequency signals can optionally be able to by, this pick-up unit is used to extract the timing code of having passed filter apparatus, thereby with its output, even when the change of the capacitance of the variable capacity device of having carried out pre-determined number, judging not under the situation of receiving trap output time sign indicating number, control device control filters device is so that change the frequency of passing filter apparatus.
And, can construct and make receiving trap have memory storage, this memory storage is used for the capacitance of storage variable capacity device when successful time of reception sign indicating number, do not obtain under the situation of timing code even when the capacitance of the variable capacity device that has changed pre-determined number, judge, control device stops the reception operation of receiving trap, and the capacitance of variable capacity device is set to the capacitance of last time, in last time, successfully received the timing code of in memory storage, storing, handled thereby stop time correction.
And, can construct and make under the situation that is receiving timing code and the processing of execution time correction, control device should the time the capacitance of variable capacity device store memory storage into, and when next time correction is handled, control store is to the capacitance of memory storage, so that with its initial value as variable capacity device.
And, can construct and make control device control variable capacity device, in the time of can receiving the timing code of pre-determined number continuously with box lunch, carry out to receive operation by the capacitance that uses the variable capacity device that has been used.
And, can construct and make that variable capacity device is to be made of varicap.
And, can construct make variable capacity device have to have a plurality of coarse adjustment capacitors the coarse adjustment part and have the fine tuning part of fine tuning capacitor, this coarse adjustment capacitor has different capacitance mutually, the capacitance of this fine tuning capacitor is less than the capacitance of coarse adjustment capacitor, and control device changes the capacitance of variable capacity device by combination coarse adjustment capacitor and fine tuning capacitor.
And, can construct and make each coarse adjustment capacitor comprise and be selected as capacitance that when using the coarse adjustment capacitor, control device is adjusted the skew of tuned frequency and receive frequency subtly by using the fine tuning capacitor corresponding to receive frequency.
And, can construct and make fine tuning partly comprise to include a plurality of fine tuning capacitors, control device changes the capacitance of variable capacity device by the combination that is chosen in the capacitor that comprises in coarse adjustment part and the fine tuning partly.
And, can construct and make the fine tuning capacitor that in the fine tuning correction portion, comprises comprise fine tuning capacitor by the varicap structure, control device is selected the capacitor in the coarse adjustment part, and changes the capacitance of variable capacity device by the capacitance that changes varicap.
And, can construct and make under the situation at the edge of the digital signal of reception that can the continuous detecting pre-determined number, control device is judged and has been received timing code.
And, can construct and make it have operating means, this operating means is used to indicate tuner operation; And control device is in response to the instruction of the tuner operation of operating means, thereby changes the capacitance of variable capacity device, so as be tuned to radio signal.
And, can construct and make that in addition in the schedule time or the reset time judged in advance, control device changes the capacitance of variable capacity device, so as be tuned to radio signal.
Description of drawings
Be described in the drawings preferred form of the present invention, wherein:
Fig. 1 relates to the block diagram of the radio-corrected timepiece of the embodiment of the invention;
Fig. 2 is the processing flow chart that shows in the radio-corrected timepiece that relates to the embodiment of the invention;
Fig. 3 is the block diagram of the radio-corrected timepiece of routine;
Fig. 4 is the chart that is presented at the timing code of the Japanese standard wave of using;
Fig. 5 relates to the block diagram of the radio-corrected timepiece of other embodiment of the present invention;
Fig. 6 is the circuit diagram that is presented at the formation of the tuner that uses among other embodiment of the present invention; And
Fig. 7 is the processing flow chart that shows in the radio-corrected timepiece that relates to other embodiment of the present invention.
Embodiment
Hereinafter, set forth the radio-corrected timepiece that relates to the embodiment of the invention.
Fig. 1 relates to the block diagram of the radio-corrected timepiece of the embodiment of the invention, and it is an example of radio-corrected timepiece, carries out time correction by the Nippon Standard ripple signal that shows among use Fig. 4 in this radio-corrected timepiece.
In Fig. 1, radio-corrected timepiece has: the antenna 101 that is made of aerial coil; Have the tuner 102 of the varicap (variable capacity) as variable capacity device, variable capacity device is used to change tuned frequency; Receiving trap 103; By the control device 104 that CPU (central processing unit) (CPU) constitutes, it carries out the control etc. of each composed component and whole radio-corrected timepiece; By the display device 105 that LCD etc. constitutes, its shows current time etc.; By the operating means 106 that operating switch etc. constitutes, it is used to carry out the instruction that time correction handles, the instruction of tuner operation etc.; And as the semiconductor memory 107 of memory storage, it is used for the program that memory control device 104 carries out, the capacitance of varicap 102 etc.
Incidentally, control device 104 also has the function as time correction device and clock apparatus.And owing to the change that just can carry out the tuned frequency of tuner by the capacitance that changes varicap, for convenience's sake, the label 102 that use is applied to varicap is described.
Receiving trap 103 has: AGC amplifier 108, and it is used to amplify the signal from varicap 102; As the wave filter 109 of filter apparatus, it make the signal of the preset frequency in the output signal of AGC amplifier 108 be able to by; And as the testing circuit 110 of pick-up unit, it is extracted in the timing code that comprises in the standard wave signal that is received by antenna 101, thereby it is outputed to control device 104 by the output signal of detection filter device 109.
Wave filter 109 has a plurality of quartz (controlled) oscillators in its inside, switches the selection quartz (controlled) oscillator by the control of control device 104, just can select any frequency signal in multifrequency signal, thereby it is passed through.And, testing circuit 110 from the signal that passes wave filter 109 extraction time sign indicating number, thereby it is outputed to control device 104, and the gain of control AGC amplifier 108.
Fig. 2 is the process flow diagram that is presented at the processing in the radio-corrected timepiece of Fig. 1, and it has shown mainly that control device 104 is implemented in the storer 107 program stored in advance and the processing carried out.
Hereinafter, by using Fig. 1 and Fig. 2 to explain operation in the radio-corrected timepiece that relates to the embodiment of the invention.
In radio-corrected timepiece, when arriving in advance in storer 107 moment of storage, perhaps when the user operated by operating operation device 106 indication time corrections, control device 104 detected these situations, thus the zero hour correct operation.
If the zero hour correct operation, when receiving timing code first in time correction running time last time, and when normally having carried out the time correction processing, since control device 104 in executable operations so that the capacitance of varicap that should the time stores storer 107 into, this control device 104 is controlled, so that carry out will storing the initial value (step S201 in Fig. 2) of the capacitance of storer 107 as varicap 102 into when time correction is handled in this time.
In this case, control device 104 outputs to receiving trap 103 with control signal, thereby controls so that receiving trap 103 begins to receive operation.Adopt this mode, receiving trap 103 begins to receive operation.
Antenna 101 receives the radio signal that includes timing code, and this timing code has the information of current time, and by varicap 102 (tuner 102) this radio signal is input to receiving trap 103.In receiving trap 103, AGC amplifier 108 amplifies the signal from varicap 102, wave filter 109 make the signal of preset frequency from the signal of AGC amplifier 108 inputs be able to by, thereby it is input to testing circuit 110.Testing circuit 110 detects the signal from wave filter 109, thus extraction time sign indicating number, and the timing code of extracting outputed to control device 104, and control AGC Amplifier Gain.
Control device 104 reads signal (if it is a normal signal from testing circuit 110, timing code) (step S202), and come by judging whether the signal of self-detection circuit 110 is digital signal (whether this signal is the signal of logical one or " 0 "), control device judges whether the signal that comes self-detection circuit 110 is timing code (step S203).
Judging that coming the signal of self-detection circuit 110 is under the situation of digital signal, be under the situation of timing code promptly in judgement, the capacitance of the varicap 102 that control device 104 should the time be defined as be tuned to the electric capacity (tuning capacity) (step S204) of related radio signal.Control device 104 control receiving traps 103 are so that receiving trap 103 stops its reception operation (step S205) at the fixed time afterwards.
Next, till step S205, control circuit 104 judges and receives the reception fully whether operation has completed successfully timing code, promptly judged whether to have completed successfully for distinguish the reception (step S206) of all required information of the current time that comprises in timing code.
In step S206, judge under the situation about receiving fully that has completed successfully timing code when control device 104, after its calibrated moment by clock apparatus (clock apparatus of oneself) timing, this clock apparatus is the clock apparatus of providing for oneself in control device 104, and come by the current time information that in the timing code of reception, comprises (step S207) after constantly carrying out timing at it, it will store storer 107 at the capacitance of the varicap 102 in this moment, thereby stop time correction operation (step S208).
Judged that in step S203 the signal that comes self-detection circuit 110 is not under the situation of digital signal, not under the situation of timing code promptly judging, after the capacitance of the varicap 102 that makes control device 104 change predetermined quantities by increase or minimizing predetermined quantity (step S209), control device judges whether this has carried out predetermined times (step S210), also do not carry out under the situation of predetermined times at it, this process turns back to step S202, thereby repeats this processing.
The above-mentioned processing of judgement has been carried out under the situation of pre-determined number in step S210, and in step S206, judge under the situation also not have complete time of reception sign indicating number successfully, control device 104 judges that skew greatly takes place tuned frequency, and control filters 109, so that use other quartz (controlled) oscillator, replace the quartz (controlled) oscillator of the current use in a plurality of quartz (controlled) oscillators that wave filter 109 had.Adopt this method, switch the signal frequency (receive frequency) (step S211) of passing (pass through) wave filter 109.Adopt this method, receive frequency just for example changes over 60kHz from 40kHz.
In this case, control device 104 reads signal (if it is a normal signal from testing circuit 110, timing code) (step S212), and whether be digital signal (whether this signal is " 1 " or " 0 " signal of logic) by the signal that judges self-detection circuit 110, it judges whether the signal that comes self-detection circuit 110 is timing code (step S213).
Judging that coming the signal of self-detection circuit 110 is under the situation of digital signal, be under the situation of timing code promptly in judgement, the capacitance of the varicap 102 that control device 104 should the time be defined as be tuned to the electric capacity (tuning capacity) (step S214) of related radio signal.Control device 104 control receiving traps 103 are so that receiving trap 103 stops its reception operation (step S215) after preset time.
Next, whether successfully complete control circuit 104 judgements operate time of reception sign indicating number by the reception among the step S211-step S215, and promptly judging whether successfully to have received is required all information (step S216) of differentiation current time.
When control device 104 has been judged successfully fully the situation of time of reception sign indicating number in step S216 under, at control device after calibrated the moment by clock apparatus (clock apparatus of oneself) timing, this clock apparatus is the clock apparatus of providing for oneself in the control device 104, and the current time information that comprises in by the timing code that is receiving is come (step S217) after constantly carrying out timing, it should the time the capacitance of varicap 102 store storer 107 into, thereby stop time correction operation (step S218).
On the other hand, judge that in step S213 coming the signal of self-detection circuit 110 is not under the situation of digital signal, not under the situation of timing code promptly judging, by increase or reduce predetermined quantity make control device 104 changed the capacitance of varicap 102 of predetermined quantity after (step S219), control device judges whether this operation has carried out predetermined times (step S220), do not carry out under the situation of predetermined times at it, this process turns back to step S212, thereby repeats this processing.
The above-mentioned processing of judgement has been carried out under the situation of predetermined times in step S220, and in step S216, judge under the situation also not have complete time of reception sign indicating number successfully, control device 104 is changed into the capacitance of variable diodes 102 and was received the successfully capacitance of time last time, this capacitance is to be stored in (step S221) in the storer 107, and after relevant capacitance is stored in storer 107, stop this processing (step S218).
As mentioned above, according to embodiments of the invention, allow to be easy to be tuned to the standard wave signal become possibility, but also can be tuned to the different a plurality of standard wave signals of frequency become possibility.
And, owing to need the time not adjust tuned frequency subtly in assembling, therefore just can be at short notice and carry out assembly work simply, and also processing becomes easy.
And the change in the tuned frequency that can also resist because temperature etc. caused is possible owing to adjust to tuning state automatically, has therefore just produced and has improved the advantage that receives susceptibility.
Incidentally, in the above embodiments, although taked at step S204, judge among the S214 that coming the signal of self-detection circuit 110 is under the situation of digital signal, be under the situation of timing code promptly in judgement, control device 104 should the time the capacitance of varicap 102 be defined as be tuned to the electric capacity (tuning capacity) of related radio signal, if be configured to so that with predetermined times continuously under the situation of receiving digital signals, just judge and received timing code, and the capacitance of varicap 102 that should the time be defined as be tuned to the electric capacity (tuning capacity) of related radio signal, structure is so that the time of reception sign indicating number is possible by using relevant capacitance to come more definitely.Adopt this method, just can access the improvement that designs in fact in receiving susceptibility.
And, can construct like this, so that indicate tuner operation by the user by operating means 106, when control device 104 instructed at the tuner operation in response to operating means 106, the tuner operation of carrying out except treatment step S207, S217 was handled.In this case, control device 104 is not carried out correct operation constantly, but changes the capacitance of varicap 102, so as be tuned to radio signal.And control device 104 stores the capacitance of the varicap 102 of change into storer 107.For time correction operation next time, just use the capacitance of storage in storer 107 as initial value.
And, the even now structure, so that store the capacitance of varicap 102 into storer 107, but also can construct like this, so that when successfully finishing reception, store the information (being the information of the quartz (controlled) oscillator of given filter use) and the capacitance of varicap 102 that is used to specify the frequency of passing wave filter 109 into storer 107 together.In this case, can construct like this, so that in time correction operation next time, control device 104 has stored the capacitance of the varicap 102 of storer 107 into by use, and removes tuning by use as the frequency of passing of the wave filter 109 of initial value.
Fig. 5 relates to the block diagram of the radio-corrected timepiece of other embodiment of the present invention similar to the above embodiments, it is an example of radio-corrected timepiece, and the Nippon Standard ripple signal that shows in Fig. 4 by use in this radio-corrected timepiece is carried out time correction.
In Fig. 5, radio-corrected timepiece has: the antenna 601 that is made of aerial coil; Be used to change the tuner 602 of tuned frequency; Receiving trap 603; By the control device 604 that CPU (central processing unit) (CPU) constitutes, it carries out the control etc. of each composed component and whole radio-corrected timepiece; By the display device 605 that LCD etc. constitutes, its shows the current moment etc.; By the operating means 606 that operating switch etc. constitutes, it is used to carry out the instruction that time correction handles, the instruction of tuner operation etc.; And as the semiconductor memory 607 of memory storage, it is used for program that memory control device 604 carries out, the capacitance of the variable capacity device (showing in the accompanying drawings) that comprises at tuner etc.Incidentally, control device 604 also has the function as time correction device and clock apparatus.
Receiving trap 603 has: multiplying arrangement 608, this multiplying arrangement are used to amplify the signal from tuner 602; Filter apparatus 609, it make the signal of preset frequency in the output signal of multiplying arrangement 608 be able to by; Pick-up unit 610, the output signal of its detection and output filter device 609; Demodulating equipment 611, it extracts the timing code that comprises in the standard wave signal that is received by antenna 601 by the output signal of demodulation pick-up unit 610, and it is outputed to control device 604; And amplification control device 612, it controls the gain of multiplying arrangement 608 in accordance with the output signal level of pick-up unit 610.Multiplying arrangement 608 is the amplifying circuits with variable gain, and it is controlled by amplification control device 612, so that make gain abide by voltage level (AGC voltage) from the control signal of amplification control device 612.
In this, in narration about the corresponding relation between Fig. 1 and Fig. 5 embodiment, the AGC multiplying arrangement that is made of multiplying arrangement 608 and amplification control device 612 has the function corresponding to AGC amplifier 108, and pick-up unit 610 and demodulating equipment 611 have the function corresponding to testing circuit 110.And operating means 606 has the function corresponding to operating means 106, and storer 607 has the function corresponding to storer 107.
Fig. 6 is the circuit block diagram that shows the formation of tuner 602, and identical label is applied to the identical part of Fig. 5.
In Fig. 6, tuner 602 has coarse adjustment part 701 and fine tuning part 702, this coarse adjustment partly has capacitance different a plurality of capacitor 703a-703c mutually, this fine tuning partly has fine tuning capacitor 705a-705n, their capacitance is less than the capacitor 703a-703c in coarse adjustment part 701, and they are the capacitances that are used for adjusting subtly capacitor 703a-703c.Capacitor 703a-703c is chosen to be the capacitance (can be similar to by tuning capacitance) of the frequency (for example, being 40kHz, 60kHz for Japan, the U.S., Britain, is 77.5kHz for Germany) corresponding to received signal.The capacitance of capacitor 705a-705n is set to the less value of comparing with capacitor 703a-703c.
For capacitor 703a-703c, 705a-705n, have open/close switch 704a-704c, the 706a-706c of series connection respectively.Coarse adjustment part 701 and fine tuning part 702 have constituted variable capacity device.According to the signal from A/D conversion equipment 613, capacitor 703a-703c, the 705a-705n of control device 604 by being combined in coarse adjustment part 701 and comprising in fine tuning part 702 changes the capacitance of variable capacity device.
Incidentally, as shown in Figure 6, although can construct so that by being configured in a plurality of fine tuning capacitor 705a-705n that comprise in the fine tuning part 702, and be chosen in the capacitor 703a-703c that comprises in coarse adjustment part 701 and the fine tuning part 702 by control device 604, the combination of 705a-705n changes the capacitance of variable capacity device, but also can adopt by one or more varicaps and be configured in the fine tuning capacitor 705a-705n that comprises in the fine tuning part 702, and be chosen in capacitor 703a-703c in the coarse adjustment part 701 by control device 604, and control so that change the capacitance of varicap, change the capacitance of variable capacity device.In this case, can take by be configured in the fine tuning capacitor that comprises in the fine tuning part 702 by one or more varicaps, and the control that is chosen in the capacitance of the varicap of capacitor and execution in the coarse adjustment part 701 by control device 604, perhaps when the capacitance of a plurality of varicaps of control, pass through the capacitance of synthetic a plurality of varicaps, change the capacitance of variable capacity device.
Fig. 7 is the processing flow chart that is presented in the radio-corrected timepiece that shows among Fig. 5 and Fig. 6, and has shown that mainly being implemented in the storer 607 in advance program stored by control device 604 carries out this processing.
Hereinafter, by using Fig. 5-Fig. 7, at length narrated the operation in the radio-corrected timepiece that relates to other embodiment of the present invention.
In radio-corrected timepiece, when arriving in storer 607 moment of storage in advance, perhaps as user during by the 606 indication time corrections processing of operating operation device, control device 604 detects these operations, thus the zero hour treatment for correcting.
If the zero hour treatment for correcting, in tuning point, received timing code first when the time correction processing time of mentioning in the back last time, and when normally having carried out the time correction processing, since control device 604 just in executable operations so that the capacitance of the variable capacity device of tuner 602 that should the time stores storer 607 into, control device is controlled so that carry out time correction when handling in this time, will store the initial value of the capacitance of storer 607 as variable capacity device into.Adopt this method, use switch 704a-704c in the coarse adjustment part 701 and the switch 706a-706c in the fine tuning part 702 to select capacitor 703a-703c in the coarse adjustment part 701 and the capacitor 705a-705n in the fine tuning part 702, switch 704a-704c and switch 706a-706c can selectively control open/close state, so that the total capacitance value of coarse adjustment part 701 and fine tuning part equals above-mentioned capacitance (step S801).
In this case, control device 604 outputs to receiving trap 603 with control signal, thereby control makes receiving trap 603 begin to receive operation.Adopt this mode, receiving trap 603 begins to receive operation.
The signal that testing circuit 610 detects from filter apparatus 609, thus it is outputed to demodulating equipment 611, and demodulating equipment 611 demodulation come the signal of self-test device 610.Adopt this method, demodulating equipment 611 extracts the timing code from the signal that multiplying arrangement 608 is exported, and by digital signal the timing code of extracting is outputed to control device 604.
And, the signal that pick-up unit 610 detects from filter apparatus 609, thus it is outputed to amplification control device 612.Amplification control device 612 abides by to come the signal of self-test device 610 that the control signal of voltage level is provided.Adopt this method, amplification control device 612 is in accordance with controlling multiplying arrangement 608 from the signal level of multiplying arrangement 608, so that the gain of multiplying arrangement 608 becomes suitable.
Control device 604 detects the voltage level (step S802) that offers the control signal (AGC signal) of multiplying arrangement 608 from amplification control device 612, and the voltage level of this time added and stores storer 607 (step S803) into.Control device 604 judges whether above-mentioned processing has carried out predetermined times (step S804), does not also carry out under the situation of predetermined times at it, and process turns back to step S801.
Above-mentioned predetermined times is the number of times of carrying out about the predetermined combinations of capacitor that comprises in coarse adjustment part 701 and the capacitor that comprises in fine tuning part 702.
For example, in Fig. 6, come to carry out for the first time coarse adjustment by a capacitor in the middle of the selection coarse adjustment capacitor 703a-703c.In this case, carry out the fine tuning of capacitance by selecting fine tuning capacitor 705a-705n one by one in order, these fine tuning capacitors all are parallel to selected coarse adjustment capacitor.Aforesaid operations is carried out at all coarse adjustment capacitor 703a-703c.Because then it is all carried out n time about each coarse adjustment capacitor 703a-703c, therefore above-mentioned predetermined times becomes 3n time.Incidentally, can construct so that select a plurality of fine tuning capacitor 705a-705n about coarse adjustment capacitor 703a-703c.
The above-mentioned processing of judgement is not carried out under the situation of pre-determined number in step S804, after control device 604 has increased or has reduced the capacitance of variable capacity device of predetermined quantity, by changing capacitor 603a-603c that in tuner 602, constitutes coarse adjustment part 701 and the combination that constitutes the capacitor 705a-705n of fine tuning part 702, thereby it is changed predetermined quantity (step S801), and control device is implemented treatment step S802, S803.By carrying out above-mentioned processing, thereby then store a plurality of AGC magnitudes of voltage into storer 607.
The above-mentioned processing of judgement has been carried out under the situation of pre-determined number in step S804, when AGC voltage minimum in a plurality of AGC voltages was stored in storer 607 as tuning point, the capacitance (step S805) of the tuning point with this capacitance changed into the capacitance (value that the condenser capacitance value of selecting by total is obtained) of variable capacity device by control device 604 from the capacitor that comprises coarse adjustment part 701 and fine tuning part.Just, when the capacitance of the variable capacity device of each change predetermined value, control device 604 detects the voltage of signals level of exporting from multiplying arrangement 608 in a plurality of points, and will in the middle of a plurality of points of detected voltage level, satisfy the point of predetermined condition (in above-mentioned example, AGC voltage is minimum voltage) as tuning point.
Incidentally, can construct so that control device 604 wherein the voltage level in voltage level a plurality of points after testing become point in the preset range of judging in advance as tuning point.In this case, the preset range of voltage level is stored into storer 607 in advance, and when reference memory 607, control device 604 is judged tuning point.
Be tuned at tuner 602 under the situation of standard wave signal, from the received signal of tuner 602 output predetermined levels, AGC voltage this moment becomes minimum level, and from pick-up unit 610 output time sign indicating numbers.Do not carry out under the tuning situation at tuner 602, the signal level of output becomes very little from tuner 602, and the AGC voltage from amplification control device 612 outputs becomes high level at the moment, not output from demodulating equipment 611 of timing code.Like this, in the present embodiment, make that variable capacity device is present in tuning point when the AGC magnitude of voltage of output from amplification control device 612 is minimum level.
In this case, control device 604 reads by pick-up unit 610 from the signal of demodulating equipment 611 (if it is a normal signal, timing code) (step S806), and by judging whether the signal from demodulating equipment 611 is digital signal (whether this signal is the signal of logical one or " 0 "), it judges whether the signal from demodulating equipment 611 is timing code (step S807).
Judging that the signal from demodulating equipment 611 is under the situation of digital signal, be under the situation of timing code promptly in judgement, control device 604 should the time the capacitance (i.e. capacitor 703a-703c from coarse adjustment part 701 and fine tuning part 702, the total capacitance value of the capacitor of selecting among the 705a-705n) of variable capacity device be defined as be tuned to the electric capacity (tuning capacity) (step S808) of related radio signal.
By carrying out such operation, under the situation that tuning point is exported from receiving trap 603, control device 604 is set to be used for the capacitance of time of reception sign indicating number at the capacitance of the variable capacity device of tuning point at the judgement time sign indicating number.
Hereinafter, the processing of enforcement and treatment step S205-S208 are similar, thereby carry out the preservation operation of time correction operation and tuning capacity.
On the other hand, judge in step S807 not detect under the situation of timing code that control device 604 stops this processing.In this case, can adopt carry out to Fig. 2 in the similar processing of treatment step S221.
As mentioned above, according to the other embodiments of the invention that are similar to the foregoing description, possible is can be easily be tuned to the standard wave signal, but also become possible be can be tuned to the different a plurality of standard wave signals of frequency.
And, because the present invention need not adjust tuned frequency subtly in installation time, therefore can be simply and carry out assembly work at short notice, and handle and become easier.
And the variation in the tuned frequency that can also resist because temperature etc. caused is possible owing to adjust to tuning state automatically, has therefore just produced and has improved the advantage that receives susceptibility.
Incidentally, in being similar to other embodiments of the invention of the foregoing description, also can construct so that indicate the tuner operation of operating means 606,, just can carry out tuner operation and handle when control device 604 during in response to the instruction of the tuner operation of operating means 606 by the user.In this case, control device 604 is not carried out correct operation constantly, but the capacitor 703a-703c that comprises in coarse adjustment part 701 by being chosen in variable capacity device and the fine tuning part 702, the combination of 705a-705n change capacitance, so as be tuned to radio signal.And control device 604 stores the capacitance of the variable capacity device of change into storer 607.Time correction for next time is handled, and the capacitance that stores storer 607 into is used as initial value.
And, in other embodiments of the invention, although construct so that will be used to realize the capacitor 703a-703c of the capacitance of variable capacity device, the combined information of 705a-705n stores storer 607 into, but also can construct so that construct the signal of filter apparatus 609 in advance and run through (passing-through) characteristic, so that it can change, when successfully finishing reception, the information (for example, the information of the quartz (controlled) oscillator of given filter device 609 uses) and the capacitance of variable capacity device 602 that appointment can be passed the frequency of filter apparatus 609 store storer 607 together into.In this case, can construct so that in the time correction of next time is handled, control device 604 by using the variable capacity device that has stored storer 607 into capacitance and (passing-through) frequency that runs through of filter apparatus 609 begin tuning processing.
And, in other embodiments of the invention,, can use one or more varicaps as the fine tuning capacitor.In this case, make the fine tuning capacitor only not carry out by structure and select, and the change control of control device 604 execution capacitances, the adjustment of capacitance just can be carried out.
And, in other embodiments of the invention, although constructed, also can construct the capacitance that changes-control variable capacity device according to signal from multiplying arrangement 608 outputs so that control the variable capacity device of tuner 602 according to the output signal of amplification control device 612.
And, in above-mentioned each embodiment, for the capacitor that in the change of tuned frequency, uses, can carry out various modifications, so that be configured to not only can be variable capacitance capacitor, can also use the capacitor that in integrated circuit (IC), utilizes, and the IC interior capacitor can be switched directly.
And, in above-mentioned each embodiment, as adopting tuning timing, can select suitably regularly, for example at each time of reception and only tuning in the unsuccessful time execution of reception, perhaps tuning in the predetermined period of time ground execution of judging in advance, and carry out tuning in reset time at the radio-corrected timepiece of Product transport time and battery altering time.
And, in above-mentioned each embodiment, as judging whether that it is the method for timing code, can also construct so that judge whether to detect accurately, continuously the edge (rise (standing up) edge or (standing down) edge that descends) of received digital signal by predetermined times.
According to the present invention, can be at an easy rate be tuned to the standard wave signal.And, be tuned to the different a plurality of standard wave signals of frequency be possible.
Because the present invention need not adjust tuned frequency subtly in installation time, therefore just can be simply and carry out assembly work at short notice, and also processing becomes easier.
And the change of the tuned frequency that can also resist because temperature etc. caused is possible owing to automatically adjust to tuning state, has therefore just produced and has improved the advantage that receives susceptibility.
The present invention can be applied to also having the radio-corrected timepiece that uses in the country of the U.S. such as Japan not only, is used for the standard wave of time correction in these countries.
Claims (13)
1. radio-corrected timepiece comprises:
Antenna, it receives the radio signal that comprises the timing code with current time information;
Tuner, it has variable capacity device, and this tuner output is corresponding to the signal of the radio signal of described antenna reception;
Receiving trap, it extracts described timing code from the signal of described tuner output;
The time correction device, it obtains the information of current time from the timing code that described receiving trap extracts, thereby proofreaies and correct the current time by it self clock apparatus timing;
Display device, it is used to show the current time by described clock apparatus timing; With
Control device is judging that it is controlled so that change the tuned frequency of described tuner by the capacitance that changes described variable capacity device not under the situation of described receiving trap output time sign indicating number.
2. radio-corrected timepiece according to claim 1, wherein said receiving trap has filter apparatus, this filter apparatus makes a plurality of frequency signals optionally to be passed, described receiving trap also has pick-up unit, this pick-up unit is used to extract the timing code of having passed described filter apparatus, thereby with its output and
Wherein said control device is controlled described filter apparatus, even so that when the change of the capacitance of the described variable capacity device of having carried out pre-determined number, judging not under the situation of described receiving trap output time sign indicating number the frequency that described filter apparatus is passed in change.
3. radio-corrected timepiece according to claim 1 also comprises:
Memory storage, it is used for storing the capacitance of described variable capacity device when successfully receiving described timing code, and
Do not obtain under the situation of described timing code even wherein when the capacitance of the described variable capacity device that has changed pre-determined number, judge, described control device stops the reception operation of described receiving trap, and the capacitance of described variable capacity device is set to the capacitance of last time, in last time, successfully received described timing code, this timing code is stored in the described memory storage, handles thereby stop time correction.
4. radio-corrected timepiece according to claim 1, wherein receiving described timing code and carrying out under the situation of time correction processing, described control device should the time the capacitance of described variable capacity device store described memory storage into, and when next time correction is handled, described control device control store is to the capacitance of described memory storage, so that with its initial value as described variable capacity device.
5. radio-corrected timepiece according to claim 1, wherein said control device is controlled described variable capacity device, in the time of can receiving described timing code continuously with box lunch with predetermined times, carry out the reception operation by the capacitance that uses the described variable capacity device that has been used.
6. radio-corrected timepiece according to claim 1, wherein said variable capacity device is made of varicap.
7. radio-corrected timepiece according to claim 1, wherein said variable capacity device has the coarse adjustment part with a plurality of coarse adjustment capacitors and has the fine tuning part of fine tuning capacitor, described coarse adjustment capacitor has different capacitance mutually, the capacitance of described fine tuning capacitor is less than the capacitance of described coarse adjustment capacitor, and
Described control device is by making up the capacitance that described coarse adjustment capacitor and described fine tuning capacitor change described variable capacity device.
8. radio-corrected timepiece according to claim 7, wherein each described coarse adjustment capacitor comprises the capacitance that is selected as corresponding to receive frequency, and
When using described coarse adjustment capacitor, described control device is adjusted the skew of described tuned frequency and described receive frequency subtly by using described fine tuning capacitor.
9. radio-corrected timepiece according to claim 7, wherein said fine tuning partly comprises a plurality of fine tuning capacitors that comprise, and described control device changes the capacitance of described variable capacity device by the combination that is chosen in the capacitor that comprises in described coarse adjustment part and the described fine tuning part.
10. radio-corrected timepiece according to claim 7, wherein the described fine tuning capacitor that comprises in described fine tuning correction portion comprises the fine tuning capacitor by the varicap structure, described control device is selected the capacitor in the described coarse adjustment part, and changes the capacitance of described variable capacity device by the capacitance that changes described varicap.
11. radio-corrected timepiece according to claim 1 wherein can detect under the situation at edge of digital signal of reception continuously with predetermined times, described control device is judged and has been received described timing code.
12. radio-corrected timepiece according to claim 1 also comprises:
Operating means is used to indicate tuner operation; And
Wherein said control device is in response to the instruction of the tuner operation of described operating means, thereby changes the capacitance of described variable capacity device, so as be tuned to described radio signal.
13. radio-corrected timepiece according to claim 12, wherein said control device changes the capacitance of described variable capacity device, so that be tuned in addition described radio signal in the schedule time of judging in advance or reset time.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004340356 | 2004-11-25 | ||
| JP2004340356 | 2004-11-25 | ||
| JP2005314050 | 2005-10-28 |
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| Publication Number | Publication Date |
|---|---|
| CN1801009A true CN1801009A (en) | 2006-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510136391 Pending CN1801009A (en) | 2004-11-25 | 2005-11-25 | Radio-corrected timepiece |
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| Country | Link |
|---|---|
| CN (1) | CN1801009A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364399A (en) * | 2011-10-20 | 2012-02-29 | 河源市全成电子有限公司 | Antenna frequency correction device and correction method for radio-controlled clock |
| CN102147140B (en) * | 2010-02-08 | 2013-04-10 | 珠海格力电器股份有限公司 | Timing appointment method of air conditioner |
| CN104915305A (en) * | 2014-03-11 | 2015-09-16 | 泰凌微电子（上海）有限公司 | USB equipment chip and frequency calibration method thereof |
| CN109581853A (en) * | 2017-09-29 | 2019-04-05 | 巨擘科技股份有限公司 | Wristwatch and method for controlling short-distance communication signal intensity of wristwatch |
-
2005
- 2005-11-25 CN CN 200510136391 patent/CN1801009A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147140B (en) * | 2010-02-08 | 2013-04-10 | 珠海格力电器股份有限公司 | Timing appointment method of air conditioner |
| CN102364399A (en) * | 2011-10-20 | 2012-02-29 | 河源市全成电子有限公司 | Antenna frequency correction device and correction method for radio-controlled clock |
| CN102364399B (en) * | 2011-10-20 | 2012-12-26 | 河源市全成电子有限公司 | Antenna frequency correction device and correction method for radio-controlled clock |
| CN104915305A (en) * | 2014-03-11 | 2015-09-16 | 泰凌微电子（上海）有限公司 | USB equipment chip and frequency calibration method thereof |
| CN109581853A (en) * | 2017-09-29 | 2019-04-05 | 巨擘科技股份有限公司 | Wristwatch and method for controlling short-distance communication signal intensity of wristwatch |
| CN109581853B (en) * | 2017-09-29 | 2020-11-20 | 巨擘科技股份有限公司 | Wristwatch and method for controlling short-distance communication signal intensity of wristwatch |
| US11048214B2 (en) | 2017-09-29 | 2021-06-29 | Princo Corp. | Wristwatch and method applicable to wristwatch for controlling magnitude of short distance communication signals |
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