| Patents for G04R 40 - Correcting the clock frequency (288) |
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| 02/04/2015 | CN103033828B 一种高灵敏度北斗辅助授时装置和授时接收机及授时方法 When a high-sensitivity device and when Hokuto grant aid granted receiver and timing method |
| 01/21/2015 | CN204116826U 一种节能电波钟 An energy-saving clock radio |
| 01/14/2015 | CN104281050A 电子手表的校时设备 When school equipment electronic watches |
| 01/07/2015 | CN204086846U 电子手表的校时设备 When school equipment electronic watches |
| 12/31/2014 | CN104252131A 指针式手表及其辅助校时方法 When secondary school wristwatch and methods |
| 12/31/2014 | CN103092068B 一种校时方法及其系统 Method and system for when a school |
| 12/17/2014 | CN204028585U 一种利用移动设备实现自动调校指针实现网络授时的手表 Watch a use of mobile devices to automatically adjust the pointer for network timing of |
| 08/13/2014 | CN103984226A 一种基于卫星信号的授时方法及系统 A satellite signal timing based method and system |
| 08/06/2014 | CN103970008A 一种基于晶振误差补偿的守时方法 Based on the crystal error compensation method punctuality |
| 07/23/2014 | CN203732737U 一种一体化微气象监测及授时装置 An integrated micro-meteorological monitoring and timing device |
| 07/09/2014 | CN103913987A Gps授时系统及其获得精确时间基准的方法 Gps timing system and method to obtain accurate time reference |
| 06/19/2014 | WO2014089988A1 High-sensitivity beidou auxiliary timing device, timing receiver and timing method |
| 06/04/2014 | CN103842918A Time control device, time control method, and program |
| 06/04/2014 | CN102759885B Pulsar time synchronous device with high reliability |
| 05/21/2014 | CN102981403B 一种时钟闰秒处理方法及其系统 A clock leap second processing method and system |
| 04/30/2014 | CN203573108U Wall clock capable of receiving Beidou satellite time |
| 04/30/2014 | CN102289191B Mechanism for positioning pointers of watch and methods for positioning, resetting and calibrating pointers |
| 04/23/2014 | CN103744281A GPS watch |
| 04/23/2014 | CN103744092A High-precision time service card applied to task navigation |
| 04/02/2014 | CN103699002A Time synchronizing method, device and system |
| 04/02/2014 | CN103699001A Method and system for realizing low-cost and high-precision timing through oven controlled crystal oscillator |
| 04/02/2014 | CN102566410B Method and device for calibrating local clock based on satellite time service |
| 04/02/2014 | CN102520608B Method and device for automatically correcting automobile vehicle-mounted clock |
| 03/26/2014 | CN103676635A Electronic timepiece and method of controlling electronic timepiece |
| 03/26/2014 | CN102323742B Clock calibration system and method for dynamic password token |
| 03/19/2014 | CN103645631A Time frequency calibration method and time frequency calibration service system between long distance time frequency laboratories |
| 03/19/2014 | CN102455656B Automobile clock calibration system and calibration method |
| 03/12/2014 | CN102830612B System and method of high-precision time service and time keeping of broadcast controller |
| 02/12/2014 | CN103580848A 参考时钟校准 Reference Clock Calibration |
| 02/12/2014 | CN103576543A Power grid time synchronization system |
| 01/29/2014 | CN102880045B Synchronous clock time output system based on global positioning system (GPS), compass satellite, optical fiber B code and high-accuracy constant-temperature crystal oscillator |
| 01/22/2014 | CN103529690A Wall clock for receiving Beidou satellite time and wall clock time calibrating method |
| 01/22/2014 | CN103529689A Main and standby satellite clock time frequency signal seamless switching device and method |
| 01/16/2014 | US20140016543 Synchronization device and synchronization method |
| 01/02/2014 | US20140003201 Electronic clock |
| 12/18/2013 | CN203350634U A synchronous time-offering device based on a satellite |
| 12/18/2013 | CN103454911A Rough synchronization method for satellite bidirectional time comparison |
| 12/18/2013 | CN102129218B Precision time service method using Beidou satellite |
| 11/27/2013 | CN203311175U GPS time service and DDS combined device for realizing stable high-speed synchronous clock |
| 11/27/2013 | CN103415816A Electronic clock |
| 11/27/2013 | CN102566408B Calibration system for satellite clock and calibration method thereof |
| 11/20/2013 | CN103399484A Local clock calibrating method and vehicle-mounted equipment |
| 11/20/2013 | CN102520607B Method for sharing standard time between timing watches |
| 11/06/2013 | CN203275901U BeiDou/GPS dual mode time service device based on solar power generation |
| 10/30/2013 | CN203259815U Remote monitoring turret clock with Beidou satellite positioning system |
| 10/30/2013 | CN203259811U Examination countdown timer |
| 10/23/2013 | CN203250149U Turret clock using Beidou satellite positioning system for comparison timing |
| 10/16/2013 | CN102495546B Timing method and device of data collection |
| 10/09/2013 | CN103345145A Method for utilizing lasers to conduct satellite borne clock measurement |
| 09/11/2013 | CN203191710U Time synchronization system of three screens of automobile |
| 09/11/2013 | CN103293947A Satellite-ground laser time comparison system |
| 08/28/2013 | CN203164620U High precision time synchronization device |
| 08/28/2013 | CN203164618U GPS timing apparatus |
| 08/14/2013 | CN102281409B Television capable of automatically calibrating time and time calibration method thereof |
| 07/31/2013 | CN103226324A High-precision time-frequency source capable of being tamed to time-frequency standard in real time |
| 07/31/2013 | CN103226203A Satellite signal reception device, timekeeping device, and satellite signal reception method |
| 07/10/2013 | CN102520606B Aircraft system clock time correcting and redundancy correction method |
| 06/26/2013 | CN103176405A GPS (global positioning system) timing system for products on industrial sewing machine controller production line |
| 06/19/2013 | CN103163780A Power network global position system (GPS)\big dipper dual system satellite synchronous clock system |
| 06/19/2013 | CN102411147B Unidirectional time-service discipline system and method for Beidou-I satellite system |
| 06/05/2013 | CN103135441A Global position system (GPS) timing device and running method thereof |
| 06/05/2013 | CN102426414B Time checking method of electric energy quality monitoring system |
| 06/05/2013 | CN101594190B Power system time synchronization method and device and power system thereof |
| 05/29/2013 | CN102331707B Electronic timepiece and time difference correction method for an electronic timepiece |
| 05/29/2013 | CN102323743B Electronic device |
| 05/22/2013 | CN202946425U Clock synchronization device for fan control system |
| 05/22/2013 | CN103116269A Beidou satellite receiving terminal time integrity verification method |
| 05/08/2013 | CN103092068A Timing method and timing system |
| 05/08/2013 | CN103092066A Clock synchronization device and method used for fan control system |
| 05/08/2013 | CN101718857B Satellite signal reception device, timekeeping device, and satellite signal reception method |
| 05/01/2013 | CN103076737A High-precision GPS (global position system) distributive time-service method based on ping-pong buffer and message mechanism |
| 04/17/2013 | CN202886873U Civil aviation airborne driving cabin clock |
| 04/17/2013 | CN103048919A Channel delay test-based satellite clock self-adjusting method |
| 04/10/2013 | CN202870480U Automatic timing digital display clock based on radio station time signals |
| 04/10/2013 | CN103033828A High-sensitivity compass-assisted time servicing device, time service receiver and time service method |
| 04/03/2013 | CN102221817B Time information acquisition apparatus and radio wave timepiece |
| 03/20/2013 | CN102981403A Clock leap second processing method and system thereof |
| 03/13/2013 | CN102968052A Electronic timepiece |
| 03/06/2013 | CN102955425A Satellite timing method with highly reliable fixed point position |
| 02/13/2013 | CN202735709U On-line simulation time-synchronism apparatus for unmanned aircraft |
| 02/13/2013 | CN102923073A Clock calibration system for automobile instrument and calibration method of clock calibration system |
| 01/30/2013 | CN102221816B Satellite time serving all-in-one machine and time serving method thereof |
| 01/23/2013 | CN202694022U Gps校时手表 Gps school watches |
| 01/16/2013 | CN102882586A Satellite time synchronization system |
| 01/16/2013 | CN102880045A Synchronous clock time output system based on global positioning system (GPS), compass satellite, optical fiber B code and high-accuracy constant-temperature crystal oscillator |
| 01/16/2013 | CN102880043A Manual leap second adjusting device |
| 01/02/2013 | CN101763029B Electronic apparatus, imaging device, method for time correction, and program |
| 12/26/2012 | CN102364399B Antenna frequency correction device and correction method for radio-controlled clock |
| 11/14/2012 | CN102183253B Software time synchronization method for position and orientation system |
| 10/04/2012 | WO2012132089A1 Synchronization device and synchronization method |
| 10/03/2012 | CN101995817B Marine secondary clock |
| 09/13/2012 | WO2012121013A1 Electronic clock |
| 09/07/2012 | WO2012118177A1 Synchronization device, time management method, and computer program |
| 09/05/2012 | CN202421768U Multifunctional time synchronization calibrator for electric power systems |
| 08/22/2012 | CN202394056U Beidou-1 satellite unidirectional time service system |
| 08/08/2012 | CN102629103A Low-order adjusting method for network clock timekeeping module of satellite time service system |
| 07/25/2012 | CN102608908A Method for adjusting speed of digital display electronic clock |
| 07/11/2012 | CN102566410A Method and device for calibrating local clock based on satellite time service |
| 07/04/2012 | CN102540868A Slow clock crystal frequency compensation method and device for mobile communication terminal |
| 07/04/2012 | CN102540211A BD-1 (Big Dipper No. 1) satellite multiple crystal oscillator time service system and method thereof |