Horology: time measuring systems or devices – Combined with disparate device
Reexamination Certificate
1999-04-15
2001-02-20
Miska, Vit (Department: 2859)
Horology: time measuring systems or devices
Combined with disparate device
C368S021000, C368S047000, C340S870030, C340S870030
Reexamination Certificate
active
06192007
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a pager which is supposed to be used in a wide area, and in particular, to a pager which is provided with functions for automatically correcting the time of day which is clocked by a clock section of the pager.
DESCRIPTION OF THE PRIOR ART
In these days, pagers for receiving radio selective calling from a paging system are widely used around the world. The pager is generally provided with a clock section for clocking the time of day in an area in which the pager is located. However, in the case of paging systems in Europe, in the United States, etc., there exist time differences between countries or areas (states etc.), and thus the user of the pager has to frequently correct the time which is clocked by the clock section if the user carries the pager across areas having time differences.
To resolve the problem, pagers which automatically correct the time clocked by the clock section have been proposed, as disclosed in Japanese Patent Application Laid-Open No.HEI6-188814 etc. The pager disclosed in the document receives an area code (indicating an area in which the pager is located) which is periodically transmitted by the paging system, and automatically corrects the time clocked by the clock section based on time difference information which is obtained by searching a time difference table using the received area code.
However, such a conventional pager is generally provided with only one clock section. Therefore, when the pager received an area code that is different from an area code which has been stored in the pager, the area code stored in the pager is updated to the newly received area code and the time clocked by the only one clock section is corrected (updated) to the time of day in the area corresponding to the received area code, and the updated local time is displayed by a display section such as an LCD (liquid crystal display) to the user. Therefore, when such a pager received a different area code, only the local time (i.e. the time of day in an area corresponding the received area code) is displayed to the user, and the user can not see the base time or the original time, that is, the time of day in the base area of the pager (i.e. the time of day in the area in which the pager has been distributed to the user).
SUMMARY OF THE INVENTION
It is therefore the primary object of the present invention to provide a pager which can automatically correct the time of day clocked by the clock section to the local time in the area in which the pager is located immediately and correctly and display the corrected local time, and which can also display the base time in the base area of the pager to the user.
Another object of the present invention is to provide a time display method for a pager, by which the time of day clocked by the clock section of the pager can automatically be corrected to the local time in the area in which the pager is located immediately and correctly and the corrected local time can be displayed, and by which the base time in the base area of the pager can also displayed to the user.
In accordance with a first aspect of the present invention, there is provided a pager for receiving radio selective calling from a paging system, comprising a base area code memory means, a time difference table storage means, a base clock means, a local clock means, a code reception means, a code matching judgment means, a time difference information searching means, a time difference information matching judgment means, a time difference information memory means, a local time correction means, and a time display means. The base area code memory means prestores a country code and an area code which indicate the base area of the pager. The time difference table storage means prestores a table including country codes and area codes of a plurality of countries and areas and time difference information of each country/area in comparison with a reference time such as the GMT (Greenwich Mean Time). The base clock means clocks base time, which is the time in the base area of the pager. The local clock means clocks local time, which is the time in an area in which the pager is located. The code reception means receives a country code and an area code which are transmitted by a base station of the paging system. The code matching judgment means judges whether or not the country code and the area code received by the code reception means are the same as the country code and the area code stored in the base area code memory means. The time difference information searching means searches the time difference table storage means for a piece of time difference information based on the country code and the area code received by the code reception means, if the code matching judgment means judged that the country code and the area code received by the code reception means are not the same as the country code and the area code stored in the base area code memory means. The time difference information matching judgment means judges whether or not the time difference information acquired by the time difference information searching means is the same as time difference information which has been stored in the time difference information memory means. Time difference information stored in the time difference information memory means is updated to the time difference information acquired by the time difference information searching means by the search, if the time difference information matching judgment means judged that the time difference information acquired by the time difference information searching means is not the same as the time difference information which has been stored in the time difference information memory means. The local time correction means executes correction of the local time clocked by the local clock means based on the time difference information acquired by the time difference information searching means and the base time clocked by the base clock means, if the time difference information matching judgment means judged that the time difference information acquired by the time difference information searching means is not the same as the time difference information which has been stored in the time difference information memory means. And the time display means displays the base time clocked by the base clock means and the local time clocked by the local clock means.
In accordance with a second aspect of the present invention, in the first aspect, the pager further comprises an informing means. The informing means informs the user about the correction of the local time and/or the corrected local time when the local time correction means executed the correction of the local time clocked by the local clock means.
In accordance with a third aspect of the present invention, in the first aspect, the pager further comprises an area name display means. The area name display means displays the names of a country and an area corresponding to the country code and the area code received by the code reception means, in the case where the code matching judgment means judged that the country code and the area code received by the code reception means are not the same as the country code and the area code stored in the base area code memory means.
In accordance with a fourth aspect of the present invention, there is provided a pager for receiving radio selective calling from a paging system, comprising a base area code memory means, a time difference table storage means, a base clock means, a local clock means, a code reception means, a code matching judgment means, a time difference information searching means, a time difference information matching judgment means, a time difference information memory means, a local time correction inquiry means, a local time correction means, and a time display means. The components of the pager other than the local time correction inquiry means and the local time correction means operate basically in the same way as those of the pager according to the first aspect of the present inve
McGuireWoods LLP
Miska Vit
NEC Corporation
LandOfFree
Pager and time display method for pager which can display... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pager and time display method for pager which can display..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pager and time display method for pager which can display... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2593539