Produits et services

(1) Atomic clocks; chronometers; clocks; clocks and watches, electric; clocks incorporating radios; control clocks; movements for clocks and watches; stopwatches; watches; wristwatches

Produits et services

Clocks; Watches; Atomic clocks; Clocks and watches, electric; Clocks incorporating radios; Master clocks; Movements for clocks and watches; Wrist watches

Produits et services

Parts for clocks; Clocks incorporating radios; wristwatches; watches; Timing clocks; chronometers; clocks and watches, electric; clocks; atomic clocks; control clocks [master clocks].

Abrégé

A low power consumption control method for a satellite time service clock system, and a clock system. The method comprises the following steps: (1) the clock system compensates for a travel time frequency according to a preset crystal frequency/temperature function relationship to compensate for the time difference of a clock caused by the temperature change, to improve the travel time accuracy; (2) a satellite receiving module (20) receives and decodes to obtain the satellite standard time; (3) synchronize the clock time according to the satellite standard time, measure the time difference between the clock time and the satellite standard time, and calculate the frequency accuracy of the clock crystal; (4) correct the preset crystal frequency/temperature function relationship according to the frequency accuracy of the crystal to compensate for the frequency aging of the travel time crystal so as to keep travel time accuracy; (5) adjust the receiving cycle of the satellite standard time according to the frequency accuracy of the crystal. The system can reduce the time and frequency of receiving a satellite signal as much as possible, reduce the power consumption of the clock system, and keep the clock with high-precision travel time.

Classes IPC  ?

• G04R 20/04 - Accord ou réceptionCircuits associés

Abrégé

A movement with pure-tungsten metal clamping plates, comprising a movement body and clamping plates (6) supporting the movement body. The clamping plates (6) include an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate being provided with journal holes configured to mount the movement body, and the clamping plates (6) being made from pure-tungsten metal materials. Clamping plates of a movement of a watch are made from pure-tungsten metal so as to be difficult to deform and rust, such that the watch has long-term stability, and is high in time precision and long in service life; a temperature coefficient is low, thereby improving the time precision of the watch; the surface roughness is high, and high time precision can be achieved without jewel bearings accordingly; and the structure of the movement is simplified, and the dimensional tolerance of the movement is reduced, thereby improving the time precision of the movement.

Classes IPC  ?

• G04B 29/02 - PlatinesPontsCoqs

Abrégé

A quartz electronic watch high-precision timekeeping method comprising: S11: pre-setting a correspondence between frequency accuracy of a quartz crystal oscillator and environmental temperatures, and pre-setting a time difference compensating period; S12: collecting a environmental temperature at the end of the time difference compensating period, and computing the average value of the environmental temperature and the environmental temperature measured at the end of former time difference compensating period as the average temperature value in the present time difference compensating period; S13: according to the correspondence between frequency accuracy of the quartz crystal oscillator and the environmental temperature and the average temperature value computed in step S12, the actual oscillation frequency accuracy of the quartz crystal oscillator in the corresponding time difference compensating period being obtained; S14: according to the actual oscillation frequency accuracy of the quartz crystal and the time value of the time difference compensating period, the timekeeping error of the quartz crystal oscillator being obtained; S15: the timekeeping of the timekeeping circuit of quartz electronic watch being compensated according to the timekeeping error. The small error occurs between the time and the standard time. A quartz electronic watch using the method.

Classes IPC  ?

• G04G 5/00 - Mise à l'heure, c.-à-d. correction ou changement de l'indication de l'heure

Abrégé

A time service watch and an implementation method thereof. The time service watch comprises a shell, a watch chip, a big dipper chip and a big dipper antenna. The big dipper chip and big dipper antenna are arranged on the shell respectively. The watch chip is arranged inside the time service watch and connected to the big dipper antenna through a big dipper chip. The implementation method of the time service watch comprises: A. the big dipper antenna receiving a time signal (202) sent by a big dipper satellite; B. the big dipper chip obtaining the time signal (203) from the big dipper antenna; C. the big dipper chip performing signal demodulation processing on the time signal to form a digital time signal (204); D. the watch chip obtaining the digital time signal from the bid dipper chip and carrying out timing (205) for the watch. The time service watch can improve time accuracy on a watch.

Classes IPC  ?

• G04G 7/02 - par radio