Radio-controlled adjustment timepiece

1. A radio-controlled adjustment timepiece comprising:

a receiver which receives a standard wave containing time information and received daylight saving information indicating whether or not the time information is provided by being adjusted by a time adjustment value for a period of daylight saving time,

a clock which keeps a clock time;

a storer which stores a period of daylight saving time set in advance independently from the received daylight saving information contained in regards to the period of daylight saving time in the standard wave;

a first adjuster which adjusts the clock time to match the time information received by the receiver;

a controller which, when information which indicates that the first adjuster performed the adjustment and the received daylight saving information upon the adjustment by the first adjuster are notified, references to the contents stored in the storer and a stored daylight saving information, determines whether a present point is in a set daylight saving time period, specifies a current time, and adjusts the clock time after the adjustment by the first adjuster, by the specified current time; and

a notifier which notifies the information which indicates that the first adjuster performed the adjustment and the stored daylight saving information upon the adjustment by the first adjuster to the controller, wherein

the controller detects whether the clock time after the adjustment by the first adjuster includes the time adjustment value from the stored daylight saving information notified by the notifier,

when detecting that the clock time after the adjustment by the first adjuster includes the time adjustment value, subtracts the time adjustment value from the clock time, determines whether the clock time derived by subtracting the time adjustment value is in the set daylight saving time period,

when determining that the clock time derived by subtracting the time adjustment value is in the set daylight saving time period, specifies the clock time derived by subtracting the time adjustment value plus the time adjustment value as the current time, and

when determining that the clock time derived by subtracting the time adjustment value is not in the set daylight saving time period, specifies the clock time derived by subtracting the time adjustment value as the current time, and

when detecting that the clock time after the adjustment by the first adjuster does not include the time adjustment value, determines whether the clock time is in the set daylight saving time period,

when determining that the clock time is in the set daylight saving time period, specifies the clock time plus the time adjustment value as the current time, and

when determining that the clock time is not in the set daylight saving time period, specifies the clock time as the current time, and

adjusts by the specified current time the clock time after the adjustment by the first adjuster.

2. The radio-controlled adjustment timepiece according to claim 1 , further comprising a second adjuster which: disables the controller; when the time information contains the time adjustment value, specifies a time derived by subtracting the time adjustment value from the time information as the current time, and when the time information does not contain the time adjustment value, specifies a time indicated by the time information as the current time; and adjusts the clock time by the specified current time.

3. The radio-controlled adjustment timepiece according to claim 2 , further comprising a third adjuster which disables the controller, and adjusts the clock time, by setting a time indicated by the time information as the current time.

4. The radio-controlled adjustment timepiece according to claim 1 , further comprising a third adjuster which disables the controller, and adjusts the clock time, by setting a time indicated by the time information as the current time.

5. A radio-controlled adjustment timepiece comprising:

a receiver which receives a standard wave including time information and daylight saving information indicating whether or not a current time point indicated by the time information is in a daylight saving time;

a clock which keeps a clock time;

a storer which stores a period of daylight saving time set independently from the daylight saving information contained in regards to the period of daylight saving time in the standard wave;

a controller which: references to contents stored in the storer; determines whether the clock time is in a set daylight saving time period; when determining that the clock time is in the set daylight saving time period, specifies the time information plus a time adjustment value for the daylight saving time period as the current time, and specifies the time information as the current time when determining that the clock time is not in the set daylight saving time period; and adjusts the clock time by the specified current time;

a first adjuster which adjusts the clock time to match the time information received by the receiver; and

a notifier which notifies information which indicates that the first adjuster performed the adjustment to the controller, wherein

the controller, when the first adjuster adjusts the clock time by the time information,

in cases where the clock time after the adjustment by the first adjuster is from a start timing of the set daylight saving time period until a timing, which an end timing of the set daylight saving time period goes back to by a time corresponding to the time adjustment value, determines that a present time is in the set daylight saving time period, sets the clock time and which is adjusted by the time information plus the time adjustment value for the daylight saving time period as the current time, and turns on a flag indicating being in the set daylight saving time period, and

in case of determining that the time after the adjustment by the first adjuster is not in the set daylight saving time period, turns the flag off,

confirms a state of the flag for determining whether the clock time is in the set daylight saving time period, and

in cases where the flag is off, determines whether the clock time is the start timing of the set daylight saving time period, when the clock time reaches the start timing, adds the time adjustment value to the clock time and turns the flag on, and

in cases where the flag is on, determines whether the clock time is the end timing of the set daylight saving time period, when the clock time reaches the end timing, subtracts the time adjustment value from the clock time and turns the flag off.

6. The radio-controlled adjustment timepiece according to claim 5 , further comprising a second adjuster which: disables the controller; when the daylight saving information indicates being within the daylight saving time period, specifies the time information plus the time adjustment value as the current time; and when not being within the daylight saving time period, specifies a time which the time information indicates as the current time; and adjusts the clock time, by the specified current time.

7. The radio-controlled adjustment timepiece according to claim 6 , further comprising a third adjuster which disables the controller, specifies the time indicated by the time information as the current time, and adjusts the clock time, by the specified current time.

8. The radio-controlled adjustment timepiece according to claim 5 , further comprising a third adjuster which disables the controller, specifies a time indicated by the time information as the current time, and adjusts the clock time by the specified current time.

9. The radio-controlled adjustment timepiece according to claim 5 , further comprising a time difference adjuster which adjusts the clock time, by adding a value which corresponds to a time difference set separately for each time zone.

10. The radio-controlled adjustment timepiece according to claim 9 , wherein the receiver receives the standard wave on or after that the time adjusted by the time difference adjuster becomes the set daylight saving time period, and the controller adjusts the clock time, based on a result of reception of the standard wave by the receiver.