JP2001141859A - Timer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timer device that can be switched to 24-hour count operation from date count operation, when the date of specifications is exceeded. SOLUTION: This timer device is equipped with an oscillator 2, an oscillation circuit 3, and a dividing circuit 4 that count date and time, a display part 11 that can indicate date and time, and a clock operation control part 12 that stores the upper limit value of the date, compares the date and the stored upper limit value, and stops the display of the date to the display part 11 for changing to the display of merely the time, when it is judged that the date reaches the upper limit value according to the result of comparison, thus achieving the timer device that operates as the state of a 24-hour clock, even if the date of the specifications is exceeded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timer device used for, for example, operating an audio device or the like with a timer.

[0002]

2. Description of the Related Art Conventionally, in audio equipment and the like equipped with a date and time clock as a timer device for operating a timer, most of them are considered in consideration of, for example, a configuration reason, a display reason, or a service life. It was designed to work only until a certain date. In such a case, it is convenient to operate as a 24-hour clock even if the date and time of the specification is exceeded without impairing the function as a clock. Therefore, such an operation has been required. Had not been realized.

Further, in the conventional timer device, when the date exceeds the limit of the date that can be counted or displayed, the clock does not operate thereafter, or the clock operates on the wrong date. Or was.

At that time, when the timer device has a timer function or the like, and it is possible to set without specifying the date such as the day of the week, hour, minute, etc., even if the limit of the date is exceeded, Since it is convenient to be able to perform an operation such as a timer function, such an operation has been required, but a timer device for realizing this operation has not been realized.

In a conventional timer device, when a date that exceeds the limit of the date that can be counted or displayed has been reached, the setting is canceled or the timer operates at a time different from the original time. I was

[0006]

However, in the above-mentioned conventional timer device, it was required to operate as a 24-hour clock even when the date and time of the specification was exceeded. However, a timer device for realizing this is realized. There was an inconvenience that he did not.

Further, when the date of the specification has been reached, the clock does not operate thereafter, or the clock operates on the wrong date, or the setting is canceled, or the original time is lost. In this case, it is required that settings such as days, hours, minutes, and the like can be made without specifying the date can be made, but a timer device for realizing this has not been realized.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a timer device which can set the year / month / day counting operation to a 24-hour counting operation when the date / time exceeds a specified date and time. And

[0009]

SUMMARY OF THE INVENTION A timer device of the present invention comprises: a clock means for measuring a date and time; a storage means for storing an upper limit of time for date measurement; a display means for displaying date and time; Comparing means for comparing the date output from the clock means with the upper limit value stored in the storage means, and stopping the display of the date on the display means when it is determined that the date reaches the upper limit value as a result of the comparison. And control means for switching to a display of only time.

Therefore, according to the present invention, the following operations are performed. The date and time are counted by the clock means, and the date, time, day, hour, minute and second of the limit of the clock operable range are displayed on the display means, and the clock operable range data stored in the storage means at this time is displayed. The comparison means compares the predetermined data with the current time held by the current time data holding unit, and the subsequent display becomes a limit. Therefore, the control means generates 24-hour clock control data, and the date is displayed on the display means. Is stopped and returned to the range that can be counted by the timekeeping means, and the display is switched to only the time. Therefore, after displaying the day of the week, hour, minute, and second on the same day as the 24-hour clock display, the 24-hour clock after the limit Displays the day of the week, hour, minute, and second. Thereafter, setting of year, month, day, hour, minute, and second is also possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A timer device according to the present embodiment
It is equipped with a date / time compatible clock and has a function of automatically operating as a date / time non-compliant clock when the time exceeds the range of the supported date / time.

In realizing the timer device of the present embodiment, a specific system configuration is an I / O dedicated to a clock.
There are a case where a C (integrated circuit) is used, a case where a clock processing unit is provided inside the device, and the like. Hereinafter, these configurations will be specifically described.

FIG. 1 shows an IC dedicated to a timepiece according to this embodiment.
FIG. 3 is a block diagram illustrating a configuration of a timer device when an (integrated circuit) is used. In FIG. 1, a timer device according to the present embodiment includes a clock-dedicated IC 1 capable of counting year, month, day, hour, minute, and second, and an oscillator 2 using a crystal piece for clock counting.
And a microcomputer (hereinafter, referred to as a "microcomputer") 10 for controlling the operation of the clock-dedicated IC 1, and a clock display by a fluorescent display tube or a liquid crystal display panel as output data of the microcomputer 10 as character / numerical data of a predetermined dot configuration. And a display unit 11 for performing the above.

The clock-only IC 1 includes an oscillation circuit 3 that oscillates at a predetermined frequency by a sine wave fed back to the oscillator 2, a frequency dividing circuit 4 that divides the output of the oscillation circuit 3 at a predetermined period, and A clock generation circuit 5 for generating a clock which is an interrupt cycle of the microcomputer 10 at the timing of a clock division output from the frequency division circuit 4; A comparator 6 that outputs a comparison output via a switch SW that is updated (turned on) at an interrupt cycle of the microcomputer 10 and that is updated at each divided output timing, and stores date, month, day, hour, minute, and second data. Year / month / day / minute / second data storage unit 7
And a clock count shift register 8 capable of counting year, month, day, hour, minute and second data, and a serial interface 9 for interfacing with the microcomputer 10.

The microcomputer 10 controls the operation of the clock dedicated IC 1 and outputs a display output data such as year, month, day, hour, minute, second, and day of the week to the display unit 11.
Is configured.

The timer device according to the present embodiment configured as described above operates as follows. Watch only IC1
The output XOUT such as a sine wave from the oscillation circuit 3 is connected to the terminal 1
The signal is fed back to the oscillator 2 via a, and when the harmonic vibration input XIN from the oscillator 2 is supplied to the oscillation circuit 3 via the terminal 1b, the feedback is applied and the oscillation circuit 3 oscillates.

The output of the oscillating circuit 3 is frequency-divided via a frequency dividing circuit 4 to generate a timing for clock counting such as year, month, day, hour, minute and second.

The comparator 6 has a date / time / hour / minute / second data storage unit 7
Is updated every time the frequency dividing output from the frequency dividing circuit 4 is performed. The clock generation circuit 5 switches the switch SW for each divided output timing from the frequency dividing circuit 4.
And outputs the comparison output from the comparator 6 as the synchronization detection data INT via the terminals 1c and 10a and supplies it to the clock operation control unit 12 of the microcomputer 10.

The clock operation control unit 12 of the microcomputer 10 receives the synchronization detection data, and the terminal 10b and the terminal 1d
The serial data is supplied to the serial interface 9 of the clock-dedicated IC 1 via the CPU 1 to request the clock-dedicated IC 1 to transmit year, month, day, hour, minute, and second data.

In response to the above-mentioned request for sending the date, month, day, hour, minute, second data, the date, month, day, hour, minute, second data storage unit 7 of the IC 1 for clock only.
Is supplied to the clock operation control unit 12 of the microcomputer 10 via the shift register 8 and the serial interface 9 and the terminals 1d and 10b.

The date, month, day, hour, minute, and second data is supplied from the clock operation control unit 12 of the microcomputer 10 to the display unit 11 via the terminal 10c and the terminal 11a. Will be displayed as

Here, in particular, in the present embodiment, in the timer device, the clock operation control unit 12 stores the upper limit value of the date measurement, and compares the date of the current time with the stored upper limit value. When it is determined that the date has reached the upper limit value as a result of the comparison, the display of the date on the display unit 11 is stopped and the display is switched to the display of only the time. A timer device that operates as a state can be realized.

FIG. 2 is a block diagram showing the configuration of another timer device when the clock processing unit of the present embodiment is provided inside the device. In FIG. 2, another timer device according to the present embodiment includes a microcomputer 13 that performs a clock processing operation, an oscillator 14 that uses a crystal piece for clock counting, and a microcomputer that outputs output data of the microcomputer 13 to a character having a predetermined dot configuration. A display unit 21 for performing a clock display using a fluorescent display tube or a liquid crystal display panel as numerical data;

The microcomputer 13 performs an oscillating operation at a predetermined frequency by a sine wave fed back to the oscillator 14 and controls an input / output between the oscillator 14 and the microcomputer 13. A frequency dividing circuit 16 for dividing the output of the output control circuit 15 by a predetermined period;
A counter 17 for counting the frequency division output from the counter 6, a clock mode control register 18 for making predetermined settings for the frequency division circuit 16 and the counter 17, and an output control circuit 19 for performing output control based on the count output of the counter 17.
And a clock operation control unit 20 that controls the operation of clock processing by the output of the output control circuit 19 and outputs output data for display such as year, month, day, hour, minute, second, and day of the week to the display unit 21. You.

The other timer device of this embodiment having the above-described structure operates as follows. Microcomputer 1
The output XOUT such as a sine wave from the oscillation circuit of the input / output control circuit 15 is fed back to the oscillator 14 via the terminal 13a, and the harmonic vibration input XI from the oscillator 14 is output.
When N is supplied to the oscillation circuit of the input / output control circuit 15 via the terminal 13b, feedback is applied and the oscillation circuit of the input / output control circuit 15 oscillates. At this time, the input / output control circuit 15 controls the level of input / output between the microcomputer 13 and the oscillator 14 so that the level can be processed in the microcomputer 13.

The output of the input / output control circuit 15 is supplied to a frequency dividing circuit 16
, And a clock count timing such as year, month, day, hour, minute, and second in the counter 17 is generated. At this time, the frequency dividing circuit 16 performs frequency division at a predetermined cycle based on the setting from the clock mode control register 18 in advance. The counter 17 counts at the timing of the frequency division output from the frequency division circuit 16. At this time, similarly, the counter 17 counts at a predetermined digit based on the setting from the clock mode control register 18 in advance.

The output control circuit 19 controls the output at the timing of the count output from the counter 17 and supplies timing data to the clock operation control unit 20. The clock operation control unit 20 updates the date, month, day, hour, minute, second data from the internal year, month, day, hour, minute, second data storage unit at each timing.

The clock operation control unit 20 performs a clock operation process for transmitting the date, month, day, hour, minute, and second data at this timing, and displays the display unit 2 via the terminal 13c and the terminal 21a.
1 is supplied with year, month, day, hour, minute, second data, and is displayed on a fluorescent display tube or the like of the display unit 21 as character / numerical data in dot configuration.

Here, in the present embodiment, in particular, in the timer device, the clock operation control section 20 stores the upper limit value of the time measurement of the date, and compares the date of the current time with the stored upper limit value. When it is determined that the date has reached the upper limit value as a result of the comparison, the display of the date on the display unit 21 is stopped and the display is switched to the time only display. A timer device that operates as a state can be realized.

FIG. 3 is a block diagram showing the configuration of the clock operation control unit 20. In FIG. 3, the clock operation control unit 20
Is a clock operable range data storage unit (ROM (Read Only Memory) storing a table of comparison data.
ry)) 22 and a current time data holding unit (RAM (Random Access Mem) that holds the current time count value at the timing of output from the output control circuit 19.
ory)) 23, a comparator 24 for comparing the comparison data with the current time count value, and 24-hour clock control data or year / month / day clock control data based on the comparison result from the comparator 24. 24-hour clock / year / month / day clock control data generation unit 25 and current time data holding unit (RAM) 2
Day data calculator 2 that calculates the day of the present time from the date / time clock control data from the 24-hour clock / year / date clock control data generator 25 with respect to the data held in 3
6, a date and time for a clock which holds each data of the date and time for the clock based on the day of the week output data from the day of the week data calculation unit 26 and the data held in the current time data holding unit (RAM) 23; A day of the week, hour, minute and second data holding unit 27.

The clock operation control unit 20 thus configured
Operates as follows. In FIG. 3, the current time data holding unit (the table-like comparison data stored in the clock operable range data storage unit (ROM) 22) and the output timing from the output control circuit 19 input via the terminal 20 a are used. The comparator 24 compares the count value at the current time held by the RAM 23 with
Output to the 4-hour clock / year / month / day clock control data generation unit 25.

The 24-hour clock / year / month / day clock control data generation unit 25 generates a clock based on the comparison result from the comparator 24.
Generate time / clock control data or year / month / day clock control data. The day-of-the-week data calculator 26 converts the data held in the current-time data holder (RAM) 23 from the date / time clock control data from the 24-hour clock / year / month / date clock control data generator 25 to the current time. Calculate the day of the week of the time. The clock date / time / day / hour / second / second data holding unit 27 stores the date / time / time / minute / second for clock based on the day output data from the day of the week data calculation unit 26 and the data stored in the current time data storage unit (RAM) 23. Each data is held and output so as to be displayed on the display unit 21 via the terminal 20b.

Here, in the present embodiment, in particular, in the timer device, the clock operation control unit 20 stores the upper limit value of date measurement by the clock operable range data storage unit (ROM) 22, and stores the current time data. The comparator 24 compares the date of the current time held by the holding unit (RAM) 23 with the upper limit value stored by the clock operable range data storage unit (ROM) 22, and sets the date to the upper limit value according to the comparison result. Is reached, the 24-hour clock / year / month / day clock control data generation unit 25 generates 24-hour clock control data, stops displaying the date on the display unit 21, and displays only the time. Since the switching is performed, a timer device that operates as a 24-hour clock even when the date and time of the specification are exceeded can be realized. Also in this case, the day of the week output data from the day of the week data calculation unit 26 can be displayed according to the 24-hour display.

FIG. 4 is a state transition diagram of the timer device.
In the timer device according to the present embodiment, there are three states described below. In FIG. 4, S1 is a state where the clock is not set, and the initial state also belongs to this state. S2 belongs to this state if the current time falls within the settable range in the operation state of the date / time clock. S3 belongs to this state when the current time is outside the set range when the 24-hour clock is operating.

Regarding the state transition, first, when the event of S4 is performed in the state S1 where the clock is not set, the state transits to the state S2 of the date corresponding to the date. If the current time is within the settable range in the state S2, the event of the count of S5 is executed, and the state remains as the state S2 of the date / time corresponding clock.

Next, the settable range NG of S6 in state S2
When an (out of range) event occurs, the status is 24
The state transits to the state S3 of the time clock, and since the current time is out of the settable range in the state S3, the state remains in the state S3 of the 24-hour clock due to the count event of S7.

When the event of the date / time clock setting S8 occurs in the state S3, the state 3 of the 24-hour clock transits to the state S2 of the date / time clock.

A control flowchart of the timer device according to the present embodiment will be described below. As a control flowchart of the timer device of the present embodiment, there are three controls of a count operation unit, a setting operation unit, and a display operation unit.

FIG. 5 is a flowchart showing the operation of the counting section. The counting operation unit in FIG.
Corresponds to the microcomputer 10 shown in FIG. 2 and the clock operation control unit 20 shown in FIG.
The clock operation control unit 20 operates by the output control circuit 1
9 is operated by the output from.

In FIG. 5, in the clock operation, first, a second count is performed in step F1, and it is determined whether or not 60 seconds has been reached in step F2. If 60 seconds has been reached in step F2, the second count is performed in step F3. Clear the value and count minutes.

At step F4, it is determined whether or not the time has reached 60 minutes.
At 5 the minute count value is cleared and the hour is counted.

In step F6, it is determined whether or not the time has reached 24:00.
At 7, the hour count value is cleared and the date is counted.

It is determined whether or not the time set in step F8 is outside the settable range. If the time is out of the settable range in step F8, the set data is used for a 24-hour clock in step F9, and the day of the week is set in step F10. After calculating the data, the time data is updated in step F13.

If it is within the settable range in step F8,
In step F11, the setting data is used for the date and time clock. In step F12, the day data is updated. Then, in step F13, the time data is updated. Hereafter, microcomputer 1
These processes and determinations are repeated at 0 or the interrupt timing of the microcomputer 13.

The operation when the setting data is set for the 24-hour clock in step F9 corresponds to the state S3 of the 24-hour clock in the state transition diagram shown in FIG. The operation in the case of using a clock corresponds to the state S2 of the year / month / date clock in the state transition diagram shown in FIG.

FIG. 6A is a flowchart showing the operation of the setting operation section. The setting operation unit in FIG. 6A corresponds to the setting event S4 and the year / month / day clock setting event S8 shown in FIG. The setting operation unit in FIG. 6A corresponds to the clock operation control unit 12 of the microcomputer 10 shown in FIG. 1 and the clock operation control unit 20 of the microcomputer 13 shown in FIG.

In FIG. 6A, the setting operation first determines whether or not to set the date and time in step F21. If the date and time is to be set in step F21, the date and time of the current time are determined in step F22. Is set. Step F21
When the clock is set to 24 hours, the setting of the hour, minute, second and day of the present time is controlled in step F23. When the date, month, day, hour, minute, and second are set in step F22, step F22 is executed.
The second data of 23 is cleared. Based on the data of the setting operation, the count operation unit shown in FIG. 5 updates the time.

FIG. 6B is a flowchart showing the operation of the display operation unit. 6B is a display operation unit 12 of the microcomputer 10 shown in FIG. 1 and a display unit 11 shown in FIG. 1 and a display unit shown in FIG. 2 by the clock operation control unit 20 of the microcomputer 13 shown in FIG. The data output operation to the unit 21 corresponds.

In FIG. 6B, first, in step F31, it is determined whether the set data is for a 24-hour clock or year / month / day clock. The minute / second data is transmitted to the display unit, and the date clear data is transmitted in step F33.

If it is determined in step F31 that the date is for the date, the date, month, day, hour, minute and second are transmitted to the display unit in step F34.

However, when the clock-specific IC 1 shown in FIG. 1 is used, the transmission of the day of the week, hour, minute and second data in step F32, the transmission of the date clear data in step F33, and the date in step F34 Before transmission of the date, time, minute, and second data, the data reception operation is performed from the clock IC 1 to the clock operation control unit 12 of the microcomputer 10.

FIG. 7 is a flowchart showing the operation of setting the timer. In FIG. 7, the operation of setting the timer is to first determine whether or not to set the date timer in step F41. If the date and time timer is set in step F41, the date and time timer is set in step F42. .

If it is not the year / month / day timer in step F41, it is determined whether or not a weekly timer is set in step F43. If it is in step F43, the weekly timer is set in step F44.

If it is not the weekly timer in step F43, it is determined whether or not a daily or once timer is set in step F45. If it is a daily or once timer in step F45, the daily or once timer is set in step F46. .

In this manner, a weekly timer (weekly timer), a daily timer (daily timer), a once timer (one-time timer), and the like can be designated, and further, less than one month. You can specify a timer, how many days ahead, and what day of the week.

FIG. 8 is a flowchart showing the operation of checking the timer. In FIG. 8, the operation of checking the timer is as follows. First, it is determined in step F51 whether or not the date timer is set. If the date / time timer is set in step F51, the date / time clock is activated in step F52. It is determined whether or not the timer is operating. If the date / time clock is operating in step F52, a timer operation using the date / time clock is performed in step F54.

If it is not the year / month / day timer at step F51, a 24-hour clock operation is performed at step F54.

If the year / month / day clock is not operating in step F52, the setting is cleared in step F53.

The case where the value is out of the setting range in step F8 in FIG. 5 described above corresponds to, for example, a leap year, the year 2000, or 100 or 200 years after production.

Further, as a specific display example on the display unit, as a date clock, the year 2089, December 31
Date, Saturday, 11:59 pm year, month, day, hour, minute, second (seconds are indicated by, for example, blinking :) are respectively set to "2089, 12.31, SAT, 11:59 P".
When the count is displayed as "M", the IC specification data, which is the clock operable range data stored in the clock operable range data storage (ROM) 22 at this point, and the current time data holding unit (RAM) 23 The comparator 24 compares the stored current time with the current time, and the subsequent display becomes a limit. Therefore, the 24-hour clock / year / month / day clock control data generation unit 2
5 generates 24-hour clock control data, and the display unit 2
Since the display of the date to 1 is stopped and returned to the countable range (for example, one day or more before) and switched to the display of only the time, the day of the week, hour, minute, and second are displayed as the 24-hour clock display on the same day ( In other words, “SAT, 11:59 P” at 11:59 pm on Saturday, 1 day before the day, which is originally the next day.
"M", and then "SUN, 00:00 AM" at 0:00 AM on Sunday, which is the original next day. After that, it is also possible to set the year, month, day, hour, minute, and second. Alternatively, a 24-hour clock may be set as a default.

The timer device of the present embodiment described above
If there is a limit on the date that can be set or displayed on devices such as audio equipment equipped with a date / time compatible clock function,
When the date exceeds the limit, the clock automatically operates as a 24-hour clock. Therefore, even if the date exceeds the set operation limit, the count can be returned to a countable range, thereby preventing the stoppage or malfunction of the operation.

Further, the timer device of the present embodiment
When operating as a four-hour clock, in addition to the function of the clock, the timer function that automatically turns on or off the power when a certain time is reached is activated. Even when the limit is exceeded, the operation of the timer function can be performed.

The timer device according to the present embodiment can be used, for example, to set the date and time by using a predetermined operation key.
By making it possible to select between setting as a date and time clock and setting as a 24-hour clock, it is possible to set as a 24-hour clock even within the range where the date can be counted.

According to the above-described timer device of the present embodiment, when the operation of the year / month / day clock becomes impossible, the timer automatically operates as a 24-hour clock. Function is hardly impaired, and normal use can be continued without resetting.

Further, in the timer device of the present embodiment, the set 24-hour timer which does not include the date can be normally operated without resetting.

Further, in the timer device of the present embodiment, when the resetting operation is performed, the date display is automatically displayed, so that the 24-hour clock operation can be easily returned to the date clock operation. .

In FIG. 4, the state transition from the date / time clock state S2 to the 24-hour clock state S3 due to the out-of-settable range S6 or the 24-hour clock state S3 due to the date / time clock setting S8. Clock status S2 corresponding to the date
The calculation of the day of the week in the case of the state transition to is performed by the clock operation control unit 12 of the microcomputer 10 or the day data calculation unit 26 of the clock operation control unit 20 of the microcomputer 13. At the time of the date / time setting S8, by setting the same day of the week or the month and day in the date / time corresponding clock state S2 before resetting, no malfunction occurs and the setting is not canceled. .
Similarly, at the time of setting S8, the day of the week is updated once every 24 hours by the day of the week data calculation unit 26,
There is no malfunction and the setting is not canceled.

[0068]

According to the timer apparatus of the present invention, there are provided a clock means for measuring a date and time, a storage means for storing an upper limit value of the date and time, a display means for displaying a date and time,
Comparing means for comparing the date output from the clock means with the upper limit value stored in the storage means, and stopping the display of the date on the display means when it is determined that the date reaches the upper limit value as a result of the comparison. And a control means for switching to display only the time, so that a timer device that operates as a 24-hour clock even when the date and time of the specification is exceeded can be realized. , The clock will not operate on the wrong date, its settings will not be canceled, or will not operate at a time different from the original time, and it will be able to continue operating as a clock after that It works.

In the timer device of the present invention, when the control means determines that the date reaches the upper limit value as a result of the comparison, the control means resets the date of the clock means at least one day earlier. When the specified date is reached, the setting outside the count range is returned to the setting within the count range, so that the clock operates on the wrong date, the setting is canceled, or the original time It does not operate at a different time, and even if it exceeds the date and time of the specification, 24
There is an effect that a timer device that operates as a time clock can be realized.

In the timer device according to the present invention, when the control means resets the date of the clock means,
Since the date is reset to the same day as the day before resetting, the clock may operate on the wrong day even when setting the year / month / day clock after transitioning to the 24-hour clock state. In addition, there is an effect that it is possible to prevent the setting from being canceled or to operate at a time different from the original day of the week.

In the timer device according to the present invention, when the control means resets the date of the clock means,
Since the month and day are reset to the same as the month and day before resetting, the clock operates on the wrong month and day even when setting the year / month / day clock after temporarily transiting to the 24-hour clock state This makes it possible to prevent the setting from being canceled or the operation from being performed at a time different from the original month and day.

In the timer device according to the present invention, the day of the week storage means for storing the day of the week, the day of the week is calculated from the date to update the storage contents of the day of the week storage, and the date is reset by the control means. 24 after done
A day-of-week updating means for updating the storage contents of the day-of-week storage means once a time is also provided. Since the clock is updated, the clock can be prevented from operating on an incorrect day of the week, its setting being canceled, or operating at a time different from the original day of the week. .

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a timer device according to the present embodiment.

FIG. 2 is a block diagram illustrating a configuration of another timer device.

FIG. 3 is a block diagram illustrating a configuration of a clock operation control unit.

FIG. 4 is a state transition diagram of a timer device.

FIG. 5 is a flowchart illustrating an operation of a counting section.

FIG. 6A is a flowchart illustrating an operation of a setting operation unit, and FIG. 6B is a flowchart illustrating an operation of a display operation unit.

FIG. 7 is a flowchart illustrating a timer setting operation.

FIG. 8 is a flowchart showing an operation of checking a timer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Watch IC, 2 ... Oscillator, 10 ... Microcomputer, 11
... display unit, 12 ... clock operation control unit, 14 ... oscillator, 20
... Clock operation control unit, 21 ... Display unit, 22 ... Clock operable range data storage unit, 23 ... Current time data holding unit, 24 ...
Comparator, 25: 24-hour clock / year / month / day clock control data generation unit, 26: Day of week data calculation unit, 27: Clock year / month / day / minute / second data holding unit, S1: time unset state, S2: year / month Day corresponding clock state, S3 ... 24 hour clock state

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Koji Hirano, Inventor 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Miho Sakagami 6-35, Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Hiroshi Kaneda 5-1-2 Sotokanda, Chiyoda-ku, Tokyo Suehiro Building Microtechnology Corporation F-term (reference) 2F002 AA00 DA00 ED02 ED04 EH01 EH03 GC11

Claims (5)

[Claims] A clock means for measuring a date and time; a storage means for storing an upper limit value of the time measurement of the date; a display means capable of displaying a date and time; a date output from the clock means; Comparing means for comparing the upper limit value stored in the storage means with the upper limit value, if the date is determined to reach the upper limit value as a result of the comparison, display of the date on the display means is stopped, and only the time is displayed. A timer device comprising: control means for switching to display. 2. The timer according to claim 1, wherein the control means resets the date of the clock means at least one day before when it is determined that the date reaches the upper limit value as a result of the comparison. apparatus. 3. The timer device according to claim 1, wherein when resetting the date of the clock means, the control means resets the date on the same day as the day before resetting. 4. The timer device according to claim 1, wherein, when resetting the date of the clock means, the control means resets the same month and day as the month and day before resetting. 5. The timer device according to claim 1, wherein the day of the week is stored from the date, the day of the week is calculated from the date, the storage content of the day of the week is updated, and the date is reset by the control unit. 2. The timer device according to claim 1, further comprising a day of the week updating means for updating the stored contents of said day of the week memory once every 24 hours.