Time adjustment device, timepiece with a time adjustment device, and time adjustment method

A technology of a correction device and a timing device, which is applied to radio-controlled timers, electronic timers, and time indications, and can solve problems such as inability to perform accurate time corrections

Inactive Publication Date: 2008-07-16
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, if the time adjustment device receives leap second data from the base station and performs time adjustment during this period, there is a problem that accurate time adjustment cannot be performed.

Method used

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  • Time adjustment device, timepiece with a time adjustment device, and time adjustment method
  • Time adjustment device, timepiece with a time adjustment device, and time adjustment method
  • Time adjustment device, timepiece with a time adjustment device, and time adjustment method

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no. 1 Embodiment approach

[0052] Fig. 1 is a schematic diagram showing a timing device with a time correcting device of the present invention, such as a watch 10 with a time correcting device (hereinafter referred to as "wrist watch"), and Fig. 2 shows the main hardware structure inside the watch 10 of Fig. 1 etc. sketches.

[0053] As shown in FIG. 1 , a wristwatch 10 has a dial 12 , hands 13 such as long hands and short hands, etc. arranged on its surface, and a display 14 composed of LEDs or the like for displaying various messages is formed. Note that the display 14 may of course be an LCD, an analog display, or the like other than LEDs.

[0054] Furthermore, as shown in FIG. 1 , the wristwatch 10 has an antenna 11 configured to receive signals from base stations such as CDMA base stations 15a and 15b. That is, the CDMA base station 15a and the like are base stations of a CDMA mobile phone communication network.

[0055] However, the wristwatch 10 of this embodiment does not have a mobile phone f...

no. 2 Embodiment approach

[0203] 15 and 16 are schematic flow charts showing main operations of the wristwatch with a time corrector according to the second embodiment of the present invention, and FIGS. 17 and 18 are main schematic block diagrams of the wristwatch with a time corrector according to this embodiment. .

[0204] Most of the structures of the wristwatch with a time corrector of this embodiment are the same as those of the wristwatch 10 of the first embodiment, so the common structures are assigned the same reference numerals and their descriptions are omitted, and the following description will focus on the differences.

[0205] In the above-mentioned first embodiment, as shown in ST14 of FIG. 9 , the currently received leap second data is compared with the registered received leap second data to determine whether the "leap second" data transmitted from the CDMA base station 15a or the like has been changed.

[0206] This is configured to compare the "currently received leap second data" ...

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Abstract

A reception unit that receives a prescribed signal containing time information transmitted by a base station, a display time information adjustment unit that adjusts the time information displayed by a time information display unit based on the time information, a leap seconds information storage unit for storing leap seconds information that is time adjustment information based on rotation of the Earth and is contained in the time information, and a leap seconds application time information storage unit that stores leap seconds application time information for adjusting the displayed time information based on the leap seconds information. The display time information adjustment unit corrects the displayed time information based on the leap seconds information and the leap seconds application time information.

Description

technical field [0001] The present invention relates to a time adjustment device for performing time adjustment based on time information contained in a signal transmitted from a base station by a mobile telephone communication network of the CDMA (Code Division Multiple Access) method, and a device with a time adjustment device. Timing device and time correction method. Background technique [0002] At present, the signal transmitted from the base station to the mobile phone in the mobile phone communication network using the CDMA method includes time information, which is an extremely accurate time consistent with the GPS time of the atomic clock based on the GPS (Global Positioning System) satellite. information. [0003] Therefore, a proposal has been proposed in which a terminal acquires GPS time data transmitted from a base station using the CDMA mobile phone communication network, and uses the GPS time data to correct the time data of a built-in clock (for example, P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G5/00G04G99/00G04R20/14
CPCG04G5/002G04C9/02G04R20/18G04R20/16H04B1/40
Inventor 浦野治
Owner SEIKO EPSON CORP
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