CN201732514U - Networked automatic timing high-precision digital permanent calendar with mutual-assistance sharing protocol - Google Patents
Networked automatic timing high-precision digital permanent calendar with mutual-assistance sharing protocol Download PDFInfo
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- CN201732514U CN201732514U CN2010202696594U CN201020269659U CN201732514U CN 201732514 U CN201732514 U CN 201732514U CN 2010202696594 U CN2010202696594 U CN 2010202696594U CN 201020269659 U CN201020269659 U CN 201020269659U CN 201732514 U CN201732514 U CN 201732514U
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Abstract
The utility model discloses a networked automatic timing high-precision digital permanent calendar with a mutual-assistance sharing protocol, which comprises a digital permanent calendar, and is characterized in that the digital permanent calendar with a wireless transmitting-receiving function includes a processor, a time display circuit, a key input circuit and a wireless transmitting-receiving module, the processor adopts a processor chip supporting a standard time mutual-assistance sharing protocol, and the time display circuit, the key input circuit and the wireless transmitting-receiving module are electrically connected onto corresponding functional pins of the processor. Accordingly, within a spatial range, one of all digital permanent calendars within a short-distance range receives standard time of a standard clock source, a system of the digital permanent calendar receiving the standard time corrects time of the digital permanent calendar and simultaneously transmits the standard time in a wireless mode, and the digital permanent calendars capable of receiving wireless signals in the range can also simultaneously correct time and share resources.
Description
Technical field:
The utility model belongs to a kind of digital perpetual calendar, relates in particular to a kind of digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement that has.
Background technology:
Existing general digital perpetual calendar is because to be based on quartz crystal be the time technological core, because quartz crystal has the error of itself, so after having crossed certain hour, just there have been cumulative errors the actual time, one day error of national Specification 3 seconds was qualified, and one day error 1 second was a high-class product.For a long time the rank that has just reached minute such as the error of time after 1 year must not only bother but also not meet development of technology with proofreading and correct manually.
Therefore, present high-end digital perpetual calendar has been used various one second the high precision clock standard sources of 300,000 years errors of atomic clock that can utilize and has been carried out the real-time clock correction, and the time inaccurate when automatically digital perpetual calendar being walked is in time proofreaied and correct, and eliminates cumulative errors! The means here are various, when mainly containing the shortwave school, and during the long wave school, during the phone school, satellite (GPS) time service or the like, main realization means are to add in digital perpetual calendar the inside when corresponding accepting device is accepted the signal of standard clock source and carried out the school! It is exactly that the various means of above theory all have its fatal weakness that but suitable distinct issues are arranged, during during such as the shortwave school and long wave school, owing to be to utilize national radio transmission radio station, so be subjected to the restriction of various site environments or because too far away from transmitting station, can not receive signal, in real time the function the during school becomes ornaments, especially abominable local or from far-off regions of wireless environment! Telephone time service is owing to will dial the school by specialized apparatus such as MODEM the time, also will collect telephone charge in the process the during school, so be the mode that belongs to very backward substantially! Though the precision of satellite time service is very high, also be subjected to the influence of environment, especially can not receive satellite-signal substantially, and on the high side indoor, generally only be used in special occasion and just can adopt, promote for civilian being unfavorable for.
Because our the clock source of present computing machine (computer PC) also utilizes quartz crystal to carry out timing, same principle is life period inaccurate also, because the electromagnetic environment of computer is also very complicated, so sometimes often more inaccurate in addition! Based on such reason, software when various computing machines school having occurred along with development of technology now, by this software, obtain the standard time by Internet technology from the standard time server and carry out the real-time correction of computer time, in the time of can accomplishing to stablize the school anywhere or anytime! Precision when carrying out the school according to related data is higher than general civilian precision fully at 10 Milliseconds, because the internet is maximum real-time network, almost omnipresent now, has the place of PC that the internet is all arranged basically.The influence that is subjected to environment be minimum also be the most stable, especially the stability of broadband network and real-time are best, are subjected to the influence of external environment hardly.Do not charge with regard to during with regard to the school.It only is an additional application of broadband internet!
Through above-mentioned numerous and diverse explanation, when we know the network school of computing machine at computing machine and network, not at timing products such as digital perpetual calendars, do a combination so propose a kind of internet and digital perpetual calendar of utilizing, and stipulated the corresponding communication agreement, have incomparable advantage for promoting large-scale popularization of civilian low cost, this technical scheme is the following problem that will solve of the utility model.
Because above-mentioned a variety of causes, so whole world national governments, research institution has all developed the real-time calibration method in clock source of various standards, such as early stage shortwave time service, telephone time service is when arriving modern gps satellite school, during the network school etc., huge input equals waste, finally still will be by manually proofreading and correct if but these means are that common user does not receive or unstable the reception for the client!
Along with telecommunications, phone, the propelling of the integration of three networks of internet could be imagined, in the near future, as long as high-precision 300,000 years errors standard time of 1 second only just can be obtained in the place that can surf the Net, and then carries out automatic correcting time!
Summary of the invention:
The utility model purpose is to be to provide a kind of common digital perpetual calendar function that both had, and has standard time digital perpetual calendar when helping each other the real-time school of sharing functionality again.
The purpose of this utility model is to realize like this, the described digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other, comprise digital perpetual calendar, its design feature is that digital perpetual calendar adopts the digital perpetual calendar that has radio transmission-receiving function, the described digital perpetual calendar that has radio transmission-receiving function comprises processor, time display circuit, button inputting circuits and radio receiving transmitting module, the processor adopting support standard time helps each other and shares the processor chips of agreement, is electrically connected with time display circuit on the corresponding function pin of processor, button inputting circuits and radio receiving transmitting module.
The purpose of this utility model also can be achieved through the following technical solutions, the described digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other, and its characteristics are to comprise the standard time transponder that has radio transmission-receiving function; The described standard time transponder that has radio transmission-receiving function comprises that microprocessor module, radio receiving transmitting module, USB interface are or/and Network Interface Module, be electrically connected with radio receiving transmitting module and USB interface or/and Network Interface Module on the corresponding function pin of microprocessor module, microprocessor module adopts to be supported the standard time to help each other to share the processor chips of agreement; The described digital perpetual calendar that has radio transmission-receiving function passes through wired connection or wireless connections with the standard time transponder that has radio transmission-receiving function.The described digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other, its characteristics are that the described digital perpetual calendar that has radio transmission-receiving function comprises infrared receiving circuit and/or speech chronopher circuit.Described have a digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement, its characteristics be the described standard time transponder that has a radio transmission-receiving function standard time obtain be by the internet during with interconnected network school the standard time server of agreement on the internet obtain.The described digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other, its characteristics are that the described standard time transponder that has radio transmission-receiving function also comprises gps satellite signal time reference signal source receiving interface or long wave correcting delay signal receiving interface or shortwave correcting delay signal receiving interface.Described have a digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement, and its characteristics are that the described standard time transponder that has radio transmission-receiving function is equipped with button circuit is set.Described have a digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement, and its characteristics are that the described digital perpetual calendar that has radio transmission-receiving function includes spider lines with the standard time transponder that has radio transmission-receiving function by wired connection and is connected.The described digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other, its characteristics are that the described digital perpetual calendar that has radio transmission-receiving function comprises that by wireless connections wireless network is connected with the standard time transponder that has radio transmission-receiving function.
A utility model advantage: the utility model proposes the notion and the technology of network mutual, reliability when having increased the real-time school of digital perpetual calendar especially! Briefly, in a spatial dimension, in a sub-district, (300 meters in 1 km) is as long as utilize the numerous digital perpetual calendar of this technology that the standard time that can receive standard clock source such as Chinese Academy of Sciences time service center is arranged in the in-plant scope, this digital perpetual calendar system of receiving the standard time is in the time adjustment of carrying out self, to launch the standard time by wireless mode, then the digital perpetual calendar that can receive wireless signal in this sub-district also simultaneously could carry out the correction of time, has accomplished the resource sharing that serve the people and be served by the people! Greatly utilized social resources, and needn't pay extra-pay! Certainly process is to have corresponding reliable and stable communication protocol to guarantee during this school! And this technology can say with the front various school the time means combine, as long as when supporting that this digital perpetual calendar of sharing agreement of helping each other can be accomplished reliable school, make digital perpetual calendar product enter into the epoch of Internet of Things first.Having very high technical progress character and novelty, is the update upgrading products of digital perpetual calendar!
This technical scheme of the present utility model is that traditional technology is incomparable, mode during traditional school is shared the support of agreement owing to help each other, all belong to the unit effect, function just equals ornaments, utterly useless during the advanced person's that he is had self real-time school as long as can not receive time reference signal!
The technology that the technical solution of the utility model is supported has a special advantage to be exactly: the digital perpetual calendar of shared agreement of supporting to help each other is installed howly more, and reliability is high more, and the effect the during school is good more! Enter millisecond precision epoch for the civilian digital perpetual calendar that promotes China and have positive meaning! According to present various data, also there be not clear and definite delivering in the disclosed data of this technical scheme.
The technical solution of the utility model is utilized modern IC technology again, it is integrated in the chip, make special chip, will promote the manufacturing and the use of digital perpetual calendar chip greatly.
The utility model also might offer this time reference signal other equipment, the shared agreement as long as this equipment support is helped each other, just can be low-cost highly reliable this social public resource of standard time of obtaining, as long as vicinity has relevant above-mentioned digital perpetual calendar, just can obtain the national standard time, for national economy is done a little contributions, such as the place of particularly answering the rate charge in the field of checking meter, the difference of time period, the price of electricity charge water rate etc. is different, thus the time accurately just become vital factor.Must by check meter network in real time to the time, just can't operate as normal as long as network failure occurs.
Description of drawings:
Fig. 1 is the circuit theory synoptic diagram that has the digital perpetual calendar of radio transmission-receiving function of the present utility model.
Fig. 2 is the circuit theory synoptic diagram that has the standard time transponder of radio transmission-receiving function of the present utility model.
Fig. 3 is a kind of topological structure theory diagram of example for the utility model during with interconnected network school.
Fig. 4 is another topological structure theory diagram of example for the utility model during with interconnected network school.
Embodiment:
Below in conjunction with drawings and Examples the utility model is elaborated:
As shown in Figure 1, the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other described in the utility model, comprise digital perpetual calendar, its design feature is: described digital perpetual calendar adopts the digital perpetual calendar that has radio transmission-receiving function, the digital perpetual calendar that has radio transmission-receiving function comprises processor, time display circuit, button inputting circuits and radio receiving transmitting module, processor can adopt as existing all processor chips available in same domain such as single-chip microcomputers, it is that the chip that can support the standard time to help each other to share agreement is installed, on the corresponding function pin of processor, be electrically connected with time display circuit, button inputting circuits and radio receiving transmitting module, radio receiving transmitting module has the wireless receiving and dispatching interface, the data communication of time reference signal is provided by the wireless receiving and dispatching interface, make digital perpetual calendar main body of the present utility model except having the various basic functions of common digital perpetual calendar, such as the high-precision timing Presentation Function, temperature, week, outside the basic function of the date Gregorian calendar lunar calendar etc., increased the function of acceptance criteria time signal, infrared receiving circuit can also be arranged, functional circuit such as speech chronopher, these circuit can be matched, decide as required, all above-mentioned electricity consumption module or circuit are powered by power supply.
Also comprise 2) have a standard time transponder of radio transmission-receiving function, as shown in Figure 2, its design feature is: comprise microprocessor module, radio receiving transmitting module, USB interface is or/and Network Interface Module, on the corresponding function pin of microprocessor module, be electrically connected with radio receiving transmitting module, USB interface is or/and Network Interface Module, microprocessor module can adopt as existing all processor chips available in same domain such as single-chip microcomputers, be to support the standard time to help each other to share the processor chips of agreement equally, can be in the light of actual conditions by various media acceptance criteria time signals, have network interface can be directly and the internet communicate, obtain the standard time from the network authorization time server (as China national time service central server etc.) of internet, and send to the digital perpetual calendar that is installed on the strange land through wave point with radio receiving transmitting module by radio receiving transmitting module, described transponder also can be equipped with the computing machine USB interface, can communicate with computing machine like this, obtain the standard time by computer internet from the network authorization time server (as China national time service central server etc.) of internet, transponder of the present utility model also can increase other time signal receiving interface such as gps satellite signal, the long wave correcting delay signal, receiving interfaces such as shortwave correcting delay signal, support the time reference signal source of various modes by these receiving interfaces and then acquisition, this will see that actual demand need come to add these functional modules, certainly selling price is just different, as long as there is the interface of reception a kind of acceptance criteria time signal wherein just passable generally speaking; Transponder of the present utility model also can add and button is installed the circuit that circuit etc. can be matched is set, to increase additional function.All above-mentioned electricity consumption module or circuit are powered by power supply.
The most special feature is exactly the shared agreement (be called for short time service and share the agreement of helping each other) of helping each other the standard time in this scheme, and this agreement is the technology that those skilled in the art can realize, it is characterized by:
This agreement is divided into shares agreement and proprietary protocol: shared agreement is the open data communication format that time reference signal is provided, and belongs to open and shares, as long as receive the utilization of can decoding of these data; Proprietary protocol then is between the own digital perpetual calendar of each family and its supporting transponder and fixed agreement, its data are not share, encrypt, have only between supporting digital perpetual calendar and the transponder and just can communicate by letter normally, mainly be for timing, birthdays etc., privately owned information setting was used, could not be shared!
The standard time information that this agreement receives only is decided by authority's standard clock source, such as national time service center, Chinese Academy of Sciences time service center, the Unite States Standard (USS) technology NITS of institute (state of Colorado) etc., clock standard is authority's unique can not changing, and its precision and degree of stability be decided by the atomic clock of these standard clock sources, and present technology has accomplished not differ from 300,000 years one second! The standard time of the described standard time transponder that has a radio transmission-receiving function obtain be by the internet during with interconnected network school the standard time server of agreement on the internet obtain.The prior art that agreement can realize for those skilled in the art during interconnected network school.
About the standard time data layout that receives then according to disclosed various standard data communications form, such as long-wave communication RRC, forms such as BPC, gps data form GPRMC form.
Civilian free common frequency channel 315MHZ or 433MHZ etc. are adopted in the transmission of standard radio data, and data layout is 2 milliseconds of initial low levels, sync byte (1 byte), order (1 byte) during the school, transponder address (4 byte), year, month, day, the time, divide second (each 1 byte), millisecond (2 byte), CRC8 check code (1 byte).Data are 16 scale codings, and signal 0 is 0.56 millisecond a low level, 1 millisecond high level; Signal 1 is 0.56 millisecond a high level, 0.56 millisecond low level.Modulation system is pulse modulation technology (PWM)
During for fear of frequent school, the frequency the during school can be provided with, basically once a day, also can be arranged to one month to the time once, as long as digital perpetual calendar is in this frequency scope during the school, when just crossing once no longer the school.
The time of transponder at the same time must received during the school, just when time data is more repeatedly made actual school, mainly be to disturb and the misconnection receipts in order to prevent.
In order to prevent malicious interference, if between this machine time and the real-time time greater than the time of setting, when just not carrying out the school, when keeping original time of digital perpetual calendar to walk, necessary in this case manual intervention.
The proprietary protocol form is then stipulated voluntarily by each manufacturer.Finish the various settings of digital perpetual calendar.Can be general between each producer can be not general yet, main in order to protect user's privately owned right
Specific embodiment is as follows:
Be that the example topological structure is during with interconnected network school:
When if digital perpetual calendar has real-time automatic correcting time function in the existing technical scheme, necessarily require every digital perpetual calendar that highly reliable automatic correcting time signal accepting device must be arranged, module etc. during such as GPS or long wave school, because function all is independently directly to accept corresponding standard clock source during the school of all digital perpetual calendars, so receiving unit must be reliable fully when necessarily requiring the school of every digital perpetual calendar, otherwise just equal a pile refuse, new solution then does not have this situation and occurs!
As: user one is in the A family online, see Fig. 3, be installed on real-time time service software in the home computer (time service software is installed) obtains national time service center by the internet according to the default time (such as every day 2 times) standard time as China national time service center time service server (Chinese Shaanxi Observatory), the back sends to the standard time transponder (supporting time service to share the agreement of helping each other) of internet type by USB interface, the data layout of sharing agreement by wireless civilian free communication channel with time service by transponder is launched among a small circle again, after the digital perpetual calendar of A family receives this time reference signal, through the time that the time adjustment one-tenth of walking time error of self is the same with the national standard time after certain verification decoding supervisor eliminating interference, because the digital perpetual calendar in the B of same sub-district family also supports this time service to share the agreement of helping each other, so the digital perpetual calendar of B family also can receive this standard time, with being arranged, the time adjustment of error comes, even if the digital perpetual calendar of B family is because problem of environment causes GPS not receive, in the time of also can passing through this kind mode school.
As user two: there is a wireless time service transponder of GPS modular type in B family, see Fig. 4, gps satellite wireless channel by Big Dipper gps satellite system receives this time reference signal, the digital perpetual calendar of (the supporting time service to share the agreement of helping each other) with wireless receiving function of its family also could keep long-term consistent with country or international standard time even if A family is not online for a long time!
Comprehensive it, need only timing devices such as the digital perpetual calendar of the type within the specific limits in this sub-district, as long as the standard time that can obtain country, so as long as support to share the especially digital perpetual calendar of timing product of the agreement of helping each other among a small circle, can keep with the national standard time synchronously! Utilized public resource greatly, solved last 1 meter problem!
Same and reason suppose in the family of a villa type, if there is digital perpetual calendar in a plurality of room, according to existing product technology, each perpetual calendar all could be walked time error behind the certain hour basically, and finally the time is different! Unless each perpetual calendar all is (such as the GPS's) of model when buying expensive school, or selling at exorbitant prices, or not receiving satellite-signal forms ornaments! If then there is not this problem in scheme when adopting interconnected network school, as long as there is one normally to link network, how digital perpetual calendars synchronously just! Reach the effect of GPS scheme equally, and stability and economical raising greatly!
Obtain sharing fully and utilizing for this public resource of standard time as can be seen by above process, again needn't worry because the intrinsic problem of quartz crystal causes the long-term accumulation of digital perpetual calendar to walk time error, the precision of the crystal oscillator of raising crystal clock simply, not only in theory also be extremely difficult, and the crystal oscillator of superhigh precision substantially can't civilian popularization, because price is too high, only, also can't accomplish automatic correcting time in the military just usefulness of special occasions that waits! Keep the time precision the same, need only whole system and keep normally with the standard time, can be not variant even if cross 300,000 years its time errors yet! Meet present Internet of Things developing direction, utilized social public resource greatly! Promote the quality of the digital perpetual calendar of China! Especially in telecommunications, the internet is under the overall background of the CATV (cable television) integration of three networks, if can access the support and the popularization of country, transponder is independently made the common apparatus that can support Internet protocol cheaply, and real-time automatic correcting time precision of each family and reliability are solved completely! Its meaning is inestimable! Might if can realize, will be the major contribution that this technology is made for country in digital perpetual calendar even first country that becomes time precision the highest (civilian 10 Milliseconds) and enter the digital perpetual calendar of Internet of Things formula of clock field China.
As long as timing products such as global digital perpetual calendar are all supported to share the agreement of helping each other, then civilian timing product in the world will enter the Internet of Things epoch comprehensively in the same way!
Transponder of the present utility model is connected by network interface with the internet, and during by interconnected network school agreement as: the SNTP agreement communicates.Digital perpetual calendar of the present utility model is connected by the wireless connections mode with transponder, and communicate by sharing the agreement of helping each other, help each other by the standard time by the radio receiving transmitting module that is provided with separately and antenna and to share agreement and carry out wireless connections, certainly also can be by connections such as wireless network such as GPS; Perpetual calendar of the present utility model generally separates with transponder, can independently exist, but generally be the supporting action function of a cover product just the network school can be arranged the time that become; In some special usages, perpetual calendar of the present utility model and transponder could unite two into one, and can partly remove wireless receiving and dispatching like this! Directly connecting as wired connection or by the wired network winding thread with circuit and carry out the cable network connection, is to separate under the situation mostly, adopts wireless connections.
Claims (8)
1. one kind has the digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement, comprise digital perpetual calendar, it is characterized in that: digital perpetual calendar adopts the digital perpetual calendar that has radio transmission-receiving function, the described digital perpetual calendar that has radio transmission-receiving function comprises processor, time display circuit, button inputting circuits and radio receiving transmitting module, the processor adopting support standard time helps each other and shares the processor chips of agreement, is electrically connected with time display circuit, button inputting circuits and radio receiving transmitting module on the corresponding function pin of processor.
2. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 1 is characterized in that: comprise the standard time transponder that has radio transmission-receiving function; The described standard time transponder that has radio transmission-receiving function comprises that microprocessor module, radio receiving transmitting module, USB interface are or/and Network Interface Module, be electrically connected with radio receiving transmitting module and USB interface or/and Network Interface Module on the corresponding function pin of microprocessor module, microprocessor module adopts to be supported the standard time to help each other to share the processor chips of agreement; The described digital perpetual calendar that has radio transmission-receiving function passes through wired connection or wireless connections with the standard time transponder that has radio transmission-receiving function.
3. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 2, it is characterized in that: the described digital perpetual calendar that has radio transmission-receiving function comprises infrared receiving circuit and/or speech chronopher circuit.
4. according to claim 2 have a digital perpetual calendar of network-type automatic correcting time high precision of helping each other and sharing agreement, it is characterized in that: the standard time of the described standard time transponder that has a radio transmission-receiving function obtain be by the internet during with interconnected network school the standard time server of agreement on the internet obtain.
5. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 2, it is characterized in that: the described standard time transponder that has radio transmission-receiving function also comprises gps satellite signal time reference signal source receiving interface or long wave correcting delay signal receiving interface or shortwave correcting delay signal receiving interface.
6. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 2, it is characterized in that: the described standard time transponder that has radio transmission-receiving function is equipped with button circuit is set.
7. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 2, it is characterized in that: the described digital perpetual calendar that has radio transmission-receiving function includes spider lines with the standard time transponder that has radio transmission-receiving function by wired connection and is connected.
8. the digital perpetual calendar of network-type automatic correcting time high precision with the shared agreement of helping each other according to claim 2, it is characterized in that: the described digital perpetual calendar that has radio transmission-receiving function comprises that by wireless connections wireless network is connected with the standard time transponder that has radio transmission-receiving function.
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| CN2010202696594U CN201732514U (en) | 2010-07-26 | 2010-07-26 | Networked automatic timing high-precision digital permanent calendar with mutual-assistance sharing protocol |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520607A (en) * | 2011-12-16 | 2012-06-27 | 东莞市泰斗微电子科技有限公司 | Method for sharing standard time between timing watches |
| CN104238354A (en) * | 2013-08-10 | 2014-12-24 | 漳州市恒丽电子有限公司 | Whole set type wrist watch combination with automatic time correction function |
| CN104345635A (en) * | 2013-08-06 | 2015-02-11 | 徐家品 | Multimedia simulation electronic clock |
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
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2010
- 2010-07-26 CN CN2010202696594U patent/CN201732514U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520607A (en) * | 2011-12-16 | 2012-06-27 | 东莞市泰斗微电子科技有限公司 | Method for sharing standard time between timing watches |
| CN104345635A (en) * | 2013-08-06 | 2015-02-11 | 徐家品 | Multimedia simulation electronic clock |
| CN104238354A (en) * | 2013-08-10 | 2014-12-24 | 漳州市恒丽电子有限公司 | Whole set type wrist watch combination with automatic time correction function |
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
| CN104850004B (en) * | 2015-04-13 | 2017-09-29 | 长沙天穹电子科技有限公司 | A kind of digital clock with air quality monitoring |
| CN104834209B (en) * | 2015-04-13 | 2017-11-03 | 长沙天穹电子科技有限公司 | A kind of time set with air quality monitoring and satellite automatic correcting time |
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