Horology: time measuring systems or devices – Plural timepiece system or system device
Reexamination Certificate
1999-01-11
2001-10-02
Miska, Vit (Department: 2859)
Horology: time measuring systems or devices
Plural timepiece system or system device
C368S047000, C368S055000
Reexamination Certificate
active
06298014
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a time information management system, and more particularly to a time information management system that uses public standard time information and which causes the timekeeping condition of one or more clock means existing within a pre-established area to always coincide with this public standard time information.
2. Background of the Invention
In the past, in a system for example such as a master-slave clock system, one known method of aligning the time information of clocks within one system to the same time information, such as noted in Japanese Unexamined Patent Publication (KOKAI) No. 62-276488, is that in which a plurality of transmission lines are used to connect the master clock to a plurality of slave clocks and in which, in the time-setting mode, the master clock sends to the slave clocks time information for use after the time setting, using digital time-division multiplexing transmission, so that transmission is made to each of the slave clocks in sequential fashion, thereby setting the time information of clocks in one system to one and the same time information.
Recently, other known methods include a method of making a connection to a time displaying means that has a telephone control apparatus by using a telephone line, and using standard time information, such as JJY time information, that is sent via this telephone line to correct the time information of the time displaying means, a method of receiving either time information that is included in radio information that is transmitted from a man-made satellite or receiving standard time information that is included in ground-based television or radio broadcasts to either automatically or manually correct the time information that is currently being displayed by a prescribed timekeeping display means.
However, in these methods of the past, such as with the time information correction method that is noted in Japanese Unexamined Patent Publication (KOKAI) No. 62-276488, because the time information that is kept by the master clock is the reference time information, in the case in which there is an error in the time information kept by the master clock with respect to standard time information, all the slave clocks connected thereto will have an error with respect to the standard time information, the result being that it was necessary to use some means to accurately correct the time information of the master clock.
In the latter described methods of time information correction, using the above-noted public standard time information it is possible in a single operation to correct the time of only one clock, so that in the case in which there is a plurality of clocks or timekeeping means, it is necessary to execute the above-noted correction operation separately and repeatedly.
For this reason, with respect to a plurality of clocks or timekeeping means, the operation of correcting the currently displayed time information to coincide with the standard time information became complex and time consuming.
An object of the present invention is to provide a time information correction system which improves on the drawbacks of the prior art as noted above and, while having a simple configuration, causes the individual time information of one or more clocks existing within a prescribed area, or of a timekeeping means that forms an appropriate timer means to instantaneously coincide with the current standard time information.
DISCLOSURE OF THE INVENTION
To achieve the above-noted object, the present invention adopts the following basic constitution.
Specifically, this is a time information management system that is formed by a time information management system that comprises a time information signal generating means that generates time information that includes standard time information, a time information adjusting means that is provided independently from the time information signal generating means, including within it a first timekeeping means, which receives a time information signal that includes standard time information and also outputs time information of the timekeeping means, one or a plurality of second timekeeping means provided independently from the time information adjusting means and disposed in a fixed or movable manner in an area surrounding the time information adjusting means, the time information adjusting means including a standard time information extracting means that extracts standard time information from a time information signal that is received from the time information signal generating means, a standard time information correction means that corrects the current time of the first timekeeping means that is included within the time information adjusting means to the correct standard time information utilizing the standard time information extracted from the standard time information extracting means, and a time information that outputs the standard time information from the first timekeeping means that is set to the correct standard time information, the configuration being such that the second timekeeping means receives the standard time information that is output form the time information output means and the timekeeping information within the second timekeeping means is corrected based on the standard time information.
By using the above-noted technical constitution, a time information management system according to the present invention can receive standard time information that is periodically output via a prescribed medium by a prescribed public organization in various countries in the world and, based on this standard time information, can easily and quickly adjust the time information of all appropriate timekeeping means provided in a fixed manner within a prescribed region, or appropriate timekeeping means provided in a movable manner within this prescribed region to the standard time information at that point in time.
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Kihara Hiroyuki
Murakami Tomomi
Sase Masahiro
Umemoto Toshio
Citizen Watch Co. Ltd.
Miska Vit
Scully Scott Murphy & Presser
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