Electric wave correcting clock

Abstract

A start date and an end date of a daylight saving time input by a user is stored in the daylight saving time information storage unit (41). The radio-controlled adjustment section (20) generates a time to adjust the time which the clocking unit (10) is clocking, by daylight saving time information and a standard time received via an antenna (AT) and a reception circuit (21), and adjusts the time of the clocking unit (10) by use of the generated time. Here, the daylight saving time determination unit (42) references to the daylight saving time period stored in the daylight saving time information storage unit (41), and adjusts the time of the clocking unit (10) so that the time becomes one which corresponds to the user-set daylight saving time.

Description

technical field [0001] The invention relates to a radio wave correction clock. Background technique [0002] As a conventional radio wave corrected clock, there is a clock described in Patent Document 1, for example. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-107178 [0004] Currently, in Japan, standard radio waves indicating time information are transmitted under the jurisdiction of the Information and Communication Research Institute, an independent administrative corporation. The time information included in this standard radio wave is one frame per minute. This one frame includes time data representing the year (the last two digits of the Gregorian calendar), the total date (the cumulative number of days from January 1), the day of the week, the hour, the minute, etc., a parity bit, a spare bit, and the like. [0005] Specifically, 1 bit is set as a 1Hz rectangular pulse, and "1" and "0" are represented by setting the pulse width to 500 ms and 800...

AI Technical Summary

Problems solved by technology

Therefore, it is not possible to change the period of daylight saving time independently, or to select the implementation or non-execution of daylight saving time

[0009] In addition, there is a problem that in an area where standard radio waves cannot be received, it cannot be determined whether corrections corresponding to daylight saving time have been made, so the correct current time cannot be displayed.

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