CN116643479A - Timepiece calibration system, timepiece calibration method, and timepiece manufacturing method - Google Patents

Abstract

The invention provides a clock calibration system, which comprises clocks and clocks capable of being connected in a communication way and clock sources, wherein the clocks and clocks send own clock signals to the clock sources, the clock sources receive the clock signals containing the clocks and clocks from the clocks, the clock signals of the clocks and clocks are compared with standard clock signals of the clock sources, correction data of the clocks are calculated, the correction data are output to the clocks, the clocks receive the correction data from the clock sources, the correction data are stored, and the travel time deviation is corrected based on the correction data according to a preset period. The clock calibrated by the clock calibration system can automatically correct the travel time deviation of the clock, and the correction precision is higher along with the higher crystal oscillation of the standard clock signal source. Moreover, the clock calibration system is simple in execution flow and beneficial to mass production. The invention also provides a timepiece, a timepiece calibration method and a timepiece manufacturing method.

Description

Timepiece calibration system, timepiece calibration method, and timepiece manufacturing method

Technical Field

The present invention relates to a timepiece calibration system, a timepiece calibration method, and a timepiece manufacturing method, and more particularly to a high-precision calibration system.

Background

The current method for adjusting the daily travel time deviation of the clock is generally realized by adjusting the capacitance values of two ends of a quartz crystal. Specifically, a clock tester (such as an overssecond meter) is used for sensing deviation values of quartz crystals, classifying the deviation values, and then correcting the deviation values by matching different capacitances. However, this adjustment method has a large error and is also greatly affected by temperature. Moreover, the production process of such a timepiece is cumbersome.

Disclosure of Invention

In view of the above, it is necessary to provide a high-precision timepiece calibration system, a timepiece calibration method, and a timepiece manufacturing method.

In one aspect, the invention provides a timepiece calibration system comprising a timepiece capable of being connected in communication with each other and a clock source, the timepiece transmitting its own clock signal to the clock source, the clock source receiving the clock signal from the timepiece including the timepiece itself and comparing the clock signal of the timepiece with a standard clock signal of the clock source, calculating correction data for the timepiece and outputting the correction data to the timepiece, the timepiece receiving the correction data from the clock source, storing the correction data, and correcting a travel time deviation based on the correction data according to a prescribed period.

Another aspect of the present invention provides another timepiece calibration system including a timepiece and a clock source capable of being communicatively connected to each other, the clock source transmitting a standard clock signal to the timepiece, the timepiece comparing a clock signal of the timepiece itself with a standard clock signal from the clock source, calculating and storing correction data for the timepiece, and the timepiece correcting a travel time deviation based on the correction data according to a prescribed period.

In a further aspect of the invention, there is provided a timepiece including an internal oscillator for generating a clock signal of the timepiece itself, a first frequency divider and a memory, the timepiece receiving correction data calculated by comparing the clock signal of the timepiece itself with a standard clock signal, and storing the correction data in the memory, the timepiece correcting a travel time deviation based on the correction data according to a prescribed period.

In a further aspect, the invention provides a method of calibrating a timepiece using a clock source, comprising the steps of:

step one: receiving a clock signal of the timepiece;

step two: comparing the clock signal of the timepiece with a standard clock signal;

step three: calculating correction data of the timepiece;

step four: outputting correction data of the timepiece;

step five: storing correction data of the timepiece; and

step six: the time variation of the timepiece is corrected based on the correction data according to a predetermined period.

In a further aspect, the invention provides a method of calibrating a timepiece, using the method of calibrating a timepiece described above.

The clock calibrated by the clock calibration system can automatically correct the travel time deviation of the clock, and the correction precision is higher along with the higher crystal oscillation of the standard clock signal source. The clock calibration system is simple in flow and beneficial to large-scale production.

Drawings

Fig. 1 is a block diagram of a timepiece calibration system of an embodiment of the invention.

Fig. 2 is a flow chart of a timepiece calibration system of an embodiment of the invention.

Description of the main reference signs

Timepiece calibration system 100

Timepiece 10

Internal oscillator 11

First frequency divider 12

Memory 13

Clock source 20

Standard clock signal source 21

Second frequency divider 22

Comparator 23

The invention will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, in one embodiment of the present invention, a timepiece calibration system 100 is provided that includes a timepiece 10 and a clock source 20 that are capable of being communicatively coupled to each other. Timepiece 10 transmits its own clock signal to clock source 20. The clock source 20 receives the clock signal from the timepiece 10, including the timepiece 10 itself, and compares the clock signal of the timepiece 10 with the standard clock signal source of the clock source 20, thereby calculating correction data of the timepiece 10, and outputs the correction data to the timepiece 10. The timepiece 10 receives correction data from the clock source 20, stores the correction data, and corrects the travel time deviation based on the correction data according to a predetermined cycle. The clock 10 can automatically correct the travel time deviation itself, and the correction accuracy is higher as the crystal oscillation of the standard clock signal source is higher. The timepiece 10 is simple in structure and suitable for mass production.

In one embodiment, timepiece 10 and clock source 20 may be communicatively coupled via a direct connection such as a single wire, serial port, SPI, IIC, or the like. In another embodiment, timepiece 10 and clock source 20 may be communicatively coupled via RF wireless.

Timepiece 10 includes an internal oscillator 11, a first frequency divider 12 and a memory 13. The internal oscillator 11 is used to generate its own clock. The memory 13 is used to store correction data of the clock. The memory 13 may be a nonvolatile memory such as HDD, flash memory, EEPROM, or a semiconductor memory such as SSD. The timepiece 10 can automatically read the correction data in the memory and does not lose them even after restarting or resetting the timepiece 10 after power-down, and therefore is not affected by the power-down. It will be appreciated that in other embodiments, the memory 13 may also be replaced by a register.

The clock source 20 comprises a standard clock signal source 21, a second frequency divider 22 and a comparator 23. The standard clock source 21 may be, for example, a high precision quartz crystal with a crystal oscillator of 32768Hz, for generating the clock source. The comparator 23 compares the clock signal of the timepiece 10 with the standard clock signal source of the clock source 20.

In the present embodiment, the predetermined period for automatically correcting the timepiece 10 is daily, but the present invention is not limited to this, and may be half a day or the like.

In the embodiment, the influence of temperature on the crystal oscillator can be split through a frequency temperature characteristic formula, time-period time compensation is carried out, and the influence of temperature change on the crystal oscillator is ensured to be minimized.

Referring to fig. 2, the clock 10 is calibrated by the clock source 20 based on the clock calibration method of the clock 10 and the clock source 20 of the clock calibration system, which performs the following procedure.

Step S1, receiving a clock signal of a clock at normal temperature.

Specifically, in the present embodiment, the clock source 20 receives a clock signal of a timepiece.

And S2, comparing the clock signal of the clock with a standard clock signal.

Specifically, in the present embodiment, the comparator 23 of the clock source 20 compares the clock signal of the timepiece with the standard clock signal source.

Step S3, calculating correction data of the clock.

Specifically, in the present embodiment, the clock source 20 calculates correction data of the timepiece.

And S4, outputting correction data of the clock.

Specifically, in the present embodiment, the clock source 20 outputs correction data of the timepiece.

Step S5, storing correction data of the clock.

Specifically, in the present embodiment, the memory 13 of the timepiece 10 stores the correction data described above.

Step S6, correcting the travel time deviation based on the correction data according to a preset period.

Specifically, in the present embodiment, the timepiece 10 corrects the travel time deviation based on the correction data according to a predetermined period. In the present embodiment, the predetermined cycle is one day, that is, the timepiece 10 automatically reads correction data and corrects the travel time deviation once a day, but the present invention is not limited thereto.

The invention also provides a clock manufacturing method, which uses the clock 10 and the clock source 20 based on the clock calibration system in the manufacturing process, has simple working procedures, and can automatically calibrate the clock 10 after the clock 10 is manufactured, and the correction precision is higher.

The timepiece 10 calibrated by the timepiece calibration system described above is capable of automatically correcting the travel time deviation itself, with higher correction accuracy as the crystal oscillation of the standard clock signal source is higher. The clock calibration system is simple in flow and beneficial to large-scale production.

In the above embodiment of the present invention, the correction data of the timepiece 10 is calculated by the clock source 20, but not limited thereto, and in another embodiment of the present invention, the correction data of the timepiece may be calculated by the timepiece 10 based on the difference between the calculated clock signal of the timepiece and the standard clock signal. That is, the timepiece 10 includes a comparator that compares the clock signal of the timepiece 10 with the standard clock signal source of the clock source 20. The calculated correction data is stored in the memory 13.

The present invention is not limited to the above-mentioned embodiments, but is capable of other and obvious modifications and equivalents of the above-mentioned embodiments, which will be apparent to those skilled in the art from consideration of the present invention without departing from the scope of the present invention.

Claims (10)

1. A timepiece calibration system including a timepiece capable of being connected to each other in communication, the timepiece transmitting a clock signal of the timepiece itself to the clock source, the clock source receiving the clock signal of the timepiece itself from the timepiece, comparing the clock signal of the timepiece with a standard clock signal of the clock source, calculating correction data of the timepiece, and outputting the correction data to the timepiece, the timepiece receiving the correction data from the clock source, storing the correction data, and correcting a travel time deviation based on the correction data according to a predetermined period.

2. The timepiece calibration system of claim 1 in which the clock signal is the clock signal of a timepiece at ambient temperature.

3. The timepiece calibration system of claim 1 wherein the predetermined period is one day.

4. The clock calibration system of claim 1 or 2, wherein the influence of temperature on the crystal oscillator is split by a frequency-temperature characteristic formula, and time-period time is compensated, so that the influence of temperature change on the crystal oscillator can be reduced.

5. The timepiece calibration system of claim 1 wherein the standard clock signal source is a signal source produced by a high precision quartz crystal having a crystal oscillator of 32768 Hz.

6. A timepiece calibration system comprising a timepiece and a clock source capable of being connected in communication with each other, the clock source transmitting a standard clock signal to the timepiece, the timepiece comparing its own clock signal with a standard clock signal from the clock source, calculating and storing correction data for the timepiece, and the timepiece correcting a travel time deviation based on the correction data according to a predetermined period.

7. The clock is characterized by comprising an internal oscillator, a first frequency divider and a memory, wherein the internal oscillator is used for generating a clock signal of the clock, the clock receives correction data of the clock, which is calculated by comparing the clock signal of the clock with a standard clock signal, and the correction data is stored in the memory, and the clock corrects the travel time deviation based on the correction data according to a preset period.

8. The timepiece of claim 7, wherein the predetermined period is one day.

9. A method of calibrating a timepiece using a clock source, comprising the steps of:

step one: receiving a clock signal of the timepiece;

step two: comparing the clock signal of the timepiece with a standard clock signal;

step three: calculating correction data of the timepiece;

step four: outputting correction data of the timepiece;

step five: storing correction data of the timepiece; and

step six: the time variation of the timepiece is corrected based on the correction data according to a predetermined period.

10. A method of manufacturing a timepiece, characterized in that the method of calibrating a timepiece according to claim 9 is used.