JP3230731B2 - Time adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DST for correcting the time of a clock used in an area that adopts daylight saving time.
The present invention relates to a time adjustment device having a (daylight saving time) function.

[0002]

2. Description of the Related Art Since the day on which the daylight saving time starts is 23 hours each day and the day on the end day is 25 hours, one hour is deleted at the beginning of the day on the start date, and the end date is deleted. Is added at the end of the day for one hour. For example, in the United States, the daylight saving time
Since it is the first Sunday of the month and the end date is the last Sunday of October, a clock with a summer time correction function having a DST function for correcting the time on each date is used. This time adjustment device is AM 2: 00'-AM on the first Sunday of April.
2:59 'deleted, AM 1:00' on the last Sunday of October
ＡＭAM1: Automatically corrects the time to add 59 '.
Therefore, when shifting from a period other than the summer time period (hereinafter referred to as a normal period) to the summer time period or when shifting from the summer time period to the normal period, it is not necessary to correct the time of the clock. by the way,
This type of clock does not change the time display state for the last hour on the end date of the summer time period,
The progress at this time could not be grasped. Therefore, a clock with a daylight saving time correction function has been proposed in which the last hour on the end date of the daylight saving time period can be recognized by the "hour" display portion, and the elapsed time during this time can be recognized by the "minute" display portion. (Actual 7-543)
No. 7).

[0003]

However, since the above-mentioned conventional clock with a daylight saving time correction function does not have the function of operating the device by adjusting the time when a timer is reserved, the start date and the end date of the daylight saving time period are set. Had a problem in each of them. For example, in the case of recording by timer reservation with a VTR, if the reservation start and end times are between 2:00 'and 2:00:59' on the first Sunday of April, this time zone is deleted even if the time is displayed. Therefore, recording is not executed. Between 1:00 'and 1:00:59' on the last Sunday of October, the last hour on the end date of the daylight saving time period can be recognized by the display unit of "hour" or "minute". Since the time is twice, if the reservation is made in this time period, the reservation may be executed in the first time period and ended in spite of the fact that it is originally the second reservation, and the actual recording is not performed. Sometimes it wasn't. In this way, when the user makes a reservation, if it is on the start date or the end date of the daylight saving time period, it is unclear whether the reservation will be executed in the time zone of the time correction, so the user should make a reservation avoiding this time zone The problem was that the reservation itself had to be stopped.

The present invention has been made in view of the above-mentioned problems, and it is possible to confirm whether a reservation is valid or invalid on a start date and an end date of a daylight saving time period, and to perform recording without any trouble in a reservation time zone. It is intended to provide a time adjustment device.

[0005]

In order to achieve the above-mentioned object, the present invention according to claim 1 provides a start time when shifting from a normal period to a summer time period based on a perpetual calendar, and a start time and a normal period from a summer time period. Time management means for managing the end time when returning to the above, warning means for issuing a warning sound requesting a re-reservation operation, display means for displaying that the reservation is invalid, and time management data of the time management means When the start time and the end time of the reservation set by the reservation setting unit correspond to the daylight saving time start day deletion time, the warning unit emits a warning sound and starts the reservation set by the reservation setting unit. When the time and the end time correspond to the added time of the daylight saving end date, a control unit that controls the display unit to display invalidation of the reservation. It is characterized by comprising a.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an electrical block diagram showing a time adjustment device according to the present invention. This time adjustment device has a DST function that corrects the time of a clock used in an area that adopts daylight saving time.
The main unit includes a time management unit 1, a display unit 5, a speaker 7, a time control unit 8, a CPU 11, and the like.
AV devices such as the TR12 are operated.
The time management unit 1 includes a timer 2, a calendar memory 3, a key operation unit 4, and the like.
1 connected. The timer 2 counts time and sends time data to the CPU 11. Further, the calendar memory 3 stores data of a normal period and a daylight saving time period for each year based on a perpetual calendar. In the United States, the daylight saving time period starts on the first Sunday of April and ends on the last Sunday of October. Is stored in the calendar memory 3 with one hour added at the end of the day.

The key operation unit 4 has various function keys. When the DST function key is operated, the CPU 11 reads data from the calendar memory 3 and starts managing the normal period and the summer time period. When the time shifts to the summer time period, the time management unit 1 deletes AM 2:00 'to AM 2:59' on the first Sunday in April and adds AM 1:00 'to AM 1:59' on the last Sunday in October. Automatically. The time control unit 8 has a built-in microcomputer, and receives an output signal of the CPU 11 and outputs a control signal to the VTR 12, the ON timer 9, the OFF timer 10, and the like. When the CPU 11 executes the DST and shifts from the normal time period to the summer time period, the device operates properly according to each time zone when the normal time returns to the normal time period from the summer time period. Note that V
The TR 12 is provided with a reservation key for operating the timer program 13 and a reservation memory 14. When a recording start time and an end time are input by operating the reservation key, this data is transmitted from the timer program 13 to the CPU 11 and is executable. Let the program decide whether or not it is a program. Then, the CPU 11 checks the recording reservation data transmitted at appropriate times against the data relating to summer time in the time management unit 1, and when it is determined that the reservation is valid, the program is stored in the reservation memory 14 together with the data of the channel. Is done. Also, an on-timer 9 and an off-timer 1
0 sends an ON signal or an OFF signal to the electric equipment connected to each.

The CPU 11 comprises a ROM (not shown),
A microcomputer comprising a RAM and an interface, the output of which is connected to a liquid crystal drive unit and a speaker drive unit 6 incorporated in the time adjustment device. A speaker 7 provided in the apparatus main body is connected to the speaker driving unit 6, and a liquid crystal display unit 5 mounted on a front panel is connected to the liquid crystal driving unit. The CPU 11 controls the operation of the entire apparatus, and displays the start time and the end time of the reservation set by the reservation key of the VTR 11 or the key operation unit 4 on the display unit 5 according to the time management data of the time management unit 1. When the time corresponds to the deletion time of the daylight saving time start date, a command signal is sent to the speaker driving unit 6 to emit a warning sound from the speaker 7 to prompt the user to set the reservation again. When the start time and the end time of the reservation set by the reservation key correspond to the added time of the daylight saving time end date, a command signal is sent to the liquid crystal drive unit to sign an “invalid” sign indicating that the reservation is invalid. An operation control such as displaying on the display unit 5 is performed.

Next, the operation of the time adjusting device will be described.
This will be described with reference to a flowchart. In the description of this operation, it is assumed that the time adjustment device 1 causes the VTR 12 to perform scheduled recording. First, if the user
When a recording reservation is made on day 12, it is on the daylight saving time start date. When the user performs a key operation for time setting with the reservation key, a reservation setting operation is started. And
When the reservation start time is input (step S11), the time is displayed on the display unit 5 (step S12). Subsequently, this reservation start time is AM2: 0 on the first Sunday of April.
It is determined whether 0 'to AM2: 59' (step S13). When this time period is reached, the CPU 11 sends a command signal to the speaker driving unit 6 and emits a warning sound from the speaker 7 (step S14). The user who has heard this warning sound knows that the reservation start time is invalid, and can reconsider the reservation time. On the other hand, if the reservation start time is not in an invalid time zone, the reservation is valid, no warning sound is emitted, and the input reservation start time is stored in the RAM.

Thereafter, when the user inputs the reservation end time (step S15), the time is displayed on the display unit 5 (step S16). Then, similarly to the case where the above-mentioned reservation start time is input, it is determined whether or not this reservation end time is 2:00 'to AM 2:59' on the first Sunday in April (step S17). In this time zone, the CPU 11 emits a warning sound from the speaker 7 (step S18), so that the user knows that the reservation is invalid and reconsiders the end time. On the other hand, if the reservation end time is not an invalid time zone, this time
Then, the operation of setting the start and end of the reservation is completed. At the end of this, since the recording reservation of the VTR 12 on the start date of the summer time period is determined to be valid, a reservation program including the channel, reservation start time, end time, and the like is recorded in the reservation memory 14 of the VTR 12.

After completion of such reservation setting, the CPU 11
Operates the timer program 13 of the VTR 12 with the start of DST. For example, if a recording reservation for one hour is made on the VTR 12 from AM 1:30 'on the first Sunday of April, this day is the start date of the summer time period and one hour is deleted. Thus, even if the reservation content for ending the recording at AM2: 30 ', the CPU 11 ends the recording at AM3: 30'. Therefore, after the recording is started at AM1: 30 ', there is no problem that the recording is ended at AM2: 30' in the deletion time zone and the recording is performed only for 30 minutes. Done.

Next, the case where the user makes a reservation for recording in the VTR 12 and the day on which the daylight saving time ends is reached. First, when a user performs a key operation for setting a time with a reservation key, a reservation setting operation is started. Then, when the reservation start time is input (step S21), the time is displayed on the display unit 5 (step S22). Subsequently, the reservation start time is from 1:00 'to AM 1:00 on the last Sunday of October.
1:59 'is determined (step S2).
3). When the time zone is set, the time is added, so the CPU 11 sends a command signal to the liquid crystal drive unit and causes the display unit 5 to display a sign that the setting of the time zone is invalid (step S24). . The user who sees this invalid display knows that the reservation start time corresponds to the additional time, and can reconsider the reservation time. That is, on this daylight saving time end date, AM 1: 00'-AM
Since 1:59 'is repeated twice, the user decides the first time or the second time in consideration of the reservation end time based on the scheduled recording time. Then, when the user inputs the first time or the second time (step S25), the time is displayed on the display unit 5 (step S26). The input reservation start time is stored in the RAM. On the other hand, if the reservation start time is not in an invalid time zone, the reservation is valid and no invalid display is made, and the inputted reservation start time remains unchanged from the RA.
M will be stored.

Thereafter, when the user inputs the reservation end time (step S27), the time is displayed on the display unit 5. Then, similarly to the case where the above-mentioned reservation start time is input, the reservation end time is set to AM1: on the last Sunday of October.
It is determined whether or not 00 'to AM1: 59' (step S28). If it is this time zone, a sign indicating that the setting of this time zone is invalid is displayed on the display unit 5 (step S29). The user who sees this invalid display knows that the reservation end time is invalid, and thus decides the first time or the second time as described above based on the recording time. Here, when the user inputs the first time or the second time (step S30),
The time is displayed on the display unit 5 (step S31).
Also, the input reservation end time is stored in the RAM.
On the other hand, if the reservation end time is not in an invalid time zone, the input reservation end time is stored in the RAM as it is, and the operation of setting the start and end of the reservation ends. At the end of this, since the recording reservation of the VTR 12 on the end date of the summer time period is determined to be valid, the reservation information including the channel, the reservation start time, the end time, and the like is recorded in the reservation memory 14 of the VTR 12.

After the above reservation setting is completed, the CPU 1
1 operates the timer program 13 of the VTR 12. On the VTR 12 side, for example, A on the last Sunday of October
When a one-hour recording reservation is made from M1: 30 ', this day is the end date of the daylight saving time period and one hour is added. Therefore, the CPU 11 starts recording at the second AM1: 30', and makes one hour. The recording ends at AM2: 30 '. Therefore, when the user sets the reservation, 1
Even if the recording is started at the second time or the second time and the end time of the recording cannot be grasped, the CPU 11 continues the second AM1: one hour before the AM2: 30 'to end the recording.
30 'is started recording. For this reason, the recording is started at the first AM 1:30 'of the additional time zone, and one hour is added. At the time of AM 2:30', the recording ends, and the problem of two hours of recording does not occur. Scheduled recording of time is performed without any trouble. Also, when the recording end time is set, it is possible to determine whether to end the recording at the first time or the second time, so that an appropriate reservation can always be made.
As described above, when the user makes a reservation for recording on the VTR 12 and the day falls on the daylight saving start or end date, the input time is displayed on the display unit 5, and a warning sound is output from the speaker 7 when the deletion time period is reached. Is emitted while the display section 5 also displays an invalid display during the additional time period.
The user can recognize the available reservation time and make valid reservation settings.

[0015]

As described above, according to the present invention, the start of the reservation set by the reservation setting means in accordance with the time management data from the time management means for managing the start and end times of the day of transition or return to the daylight saving time period. When the time and end time correspond to the daylight saving time start day deletion time, a warning sound is emitted from the warning means, and the user who listens to this warning sound must make a reservation invalid for the time zone to be deleted. You can reconsider the reservation time. When the start time and end time of the reservation set by the reservation setting unit correspond to the added time of the daylight saving end date, the display unit displays the invalidation of the reservation. It can be seen that the same time is repeated twice for the added time zone, and it is possible to determine whether the reserved time should be the first or second and set the reservation at an appropriate time. Therefore, when the user makes a reservation, the time zone in which the time is adjusted on the start date or end date of the daylight saving time period becomes clear, and a valid reservation setting can always be made. There is an effect that it is possible to record information and operate devices based on an appropriate reservation without stopping the reservation itself.

[Brief description of the drawings]

FIG. 1 is an electrical block diagram showing a time adjustment device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation when a VTR recording reservation is made on a daylight saving time start date.

FIG. 3 is a flowchart showing an operation when a recording reservation of a VTR is made on a daylight saving time end date.

[Explanation of symbols]

 1 time management means 4 reservation setting means 5 display means 7 warning means 11 control means

Claims (1)

(57) [Claims] 1. A time management means for managing a start time when shifting from a normal period to a summer time period and an end time when returning from a summer time period to a normal time period based on a perpetual calendar, and a warning requesting a re-reservation operation. A warning unit that emits a sound, a display unit that indicates that the reservation is invalid, and a start time and an end time of the reservation that are set by the reservation setting unit according to the time management data of the time management unit are deleted by the daylight saving time start date. When the time corresponds to the time, the warning means emits a warning sound, and when the start time and the end time of the reservation set by the reservation setting means correspond to the additional time of the daylight saving end date, the display means. A time adjusting device comprising: a control unit for performing control to display the invalidation of the reservation.