JP3070204B2 - Alarm clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece having an alarm function.

[0002]

2. Description of the Related Art A clock with an alarm function that sounds an alarm sound at a set time is known. However, it is not necessary to sound the alarm sound at the same time as a weekday on holidays. Some alarms do not sound on holidays even if the time is set. Also,
Some holidays allow you to set a different alarm time from weekdays.

[0003] In any case, an alarm is sounded at the usual alarm time on the day after the holiday, but since the wake-up time is often delayed on holidays, the alarm is released on the day after holiday. There was a problem that it was difficult to wake up even if the sound was heard.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an alarm clock which can be surely awakened on the day after a holiday.

[0005]

The gist of the present invention is to detect whether or not the current day is the day after a holiday, and if the current day is a day after a holiday, emit an alarm sound at a volume higher than the volume of a weekday. Further, the volume of the alarm sound is changed depending on the number of consecutive days of the holiday.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit configuration diagram of the alarm clock of the embodiment.

In FIG. 1, a clock signal generated by an oscillation circuit 1 is frequency-divided by a frequency dividing circuit 2 to a predetermined frequency and output to a time counting circuit 3 as a clock signal. Further, from the frequency dividing circuit 2, an alarm signal for driving a speaker 13 described later is output to the AND gate 9.

The time counting circuit 3 counts the time signal from the frequency dividing circuit 2 to obtain time data, and converts the time data to C
The signal is output to the PU 5 and the date carry signal is output to the calendar counting circuit 4.

The calendar counting circuit 4 counts the date carry signal to obtain date data, and outputs the date data to the CP.
Output to U5. The RAM 6 has a holiday storage unit 6a for storing holidays set by the user, a register Q for storing the number of consecutive holidays, a register L for storing the volume level of the alarm sound, and whether or not the alarm sound is being sounded. Flag F indicating
A and a register AL for storing an alarm time are provided.

In this embodiment, the volume of the alarm sound can be varied in three stages depending on whether the current day is a weekday, a weekday following a holiday of two days or less, or a weekday following a consecutive holiday of three days or more. For example, when the alarm sound is emitted at the lowest volume, "1" is set in the register L, and when the alarm sound is emitted at the second highest volume, "2" is set, and the alarm is emitted at the highest volume. Sometimes “3” is set.

The CPU 5 detects a switch operation signal from the switch unit 7, controls the volume of the alarm sound, and displays the display unit 8.
It is a central processing unit that displays the date and the current time on the display. The RS flip-flop d is a circuit that is set by a signal from the CPU 5 when the alarm time has been reached. The output Q of the flip-flop d is the AND gate 9
When the flip-flop d is set, the signal from the frequency dividing circuit 2 input to the other input terminal of the AND gate 9 is supplied to the AND gate 1 when the flip-flop d is set.
It is output to one of the input terminals 0, 11, and 12.

The RS flip-flops a, b and c are circuits for controlling whether or not to supply an alarm signal to the bases of transistors TR1, TR2 and TR3 which will be described later.
It is set or reset by a signal output from PU5.

The output Q of the flip-flops a, b, and c is connected to the other input terminal of the AND gates 10, 11, and 12, and the flip-flop d is set and any one of the flip-flops a, b, and c Is in the set state (when the output Q is at a high level), the AND gates 10, 11 or 12 connected to the respective flip-flops are turned on, and the signal from the frequency dividing circuit 2 is applied to the transistors TR1, T2.
Output to the base of R2 or TR3.

The output of each AND gate 10, 11, 12 is connected to transistors TR1, T2 via resistors R1, R2, R3.
The collectors of the transistors TR1, TR2, and TR3 are connected between one end of the speaker 13 and the ground.

The transistors TR1, TR2, TR
The resistance values of the resistors R1, R2, and R3 connected to the base of the transistor TR3 have a relationship of R1 <R2 <R3. When an alarm signal is supplied from each of the AND gates 10, 11, and 12, the resistance of the transistor TR1 is reduced. The largest base current flows through the base, the second largest base current flows through the base of the transistor TR2, and the smallest base current flows through the base of the transistor TR3.

For example, when the flip-flop d and the flip-flop a are set by the CPU 5 at the alarm time, a signal output from the frequency dividing circuit 2 is applied to the base of the transistor TR1 via the AND gate 10 and the resistor R1. Can be

As described above, since the base resistance R1 of the transistor TR1 is the smallest among the resistances R1 to R3,
The largest base current flows through the base of R1, and the current flowing through the collector also becomes maximum. As a result, the speaker 13
The alarm sounds at the loudest volume.

The flip-flop b by the CPU 5
Is set, the signal output from the frequency dividing circuit 2 is supplied to the transistor T via the AND gate 11 and the resistor R2.
Given to the base of R2.

The base resistance R2 of the transistor TR2 is
Since it is the second smallest among the resistors R1 to R3, the second largest current flows through the base of the transistor TR2, and the second largest current also flows through the collector. As a result, an alarm sound is emitted from the speaker 13 at the second largest volume.

Similarly, when the flip-flop c is set by the CPU 5, the signal output from the frequency dividing circuit 2 is supplied to the base of the transistor TR3 via the AND gate 12 and the resistor R3.

The base resistance R3 of the transistor TR3 is
Since it is the largest among the resistors R1 to R3, the transistor T
The current flowing to the base of R3 is minimized, and the current flowing to the collector is also minimized. As a result, the speaker 13 emits an alarm sound at the lowest volume.

Next, the operation of the above circuit will be described with reference to the flowchart of FIG. In step S1 of FIG. 2, it is determined whether or not a switch input has been made. If there is a switch input, the switch processing of the next step S2 is executed, and then it is determined in step S3 whether a day carry signal has been generated.

When a day carry signal is generated, the holiday storage section 6a of the RAM 6 is checked in step S4 to determine whether the current day is a holiday. If the day is a holiday, step S5
Increments the register Q for counting the number of consecutive holidays.

If the day is not a holiday, the process proceeds to step S6 to determine whether or not the day is after a holiday.
In step S7, it is determined whether the value of the register Q is equal to or less than "2".

When the day is a holiday and Q ≦ 2,
Since it is a holiday after one or two consecutive days, step S is performed so that the alarm sound is emitted at the second largest volume.
At step 8, "2" is set in the register L for specifying the volume of the alarm sound. Then, in step S9, the register Q that counts the number of consecutive holidays is cleared.

If Q ≦ 2 is not determined in step S7,
Since it is a holiday after three or more consecutive days, "3" is set in the register L in step S11 so that the alarm sound is emitted at the loudest volume.

If it is determined in step S6 that the current day is not a holiday, the register L is set to "1" in step S10 so that the arm sound is emitted at the lowest volume. If the day carry signal has not been generated in step S3, the process proceeds to step S12 to determine whether or not the flag FA フ ラ グ 0.

If FA ≠ 0, it is determined in step S13 whether the current time matches the alarm time. If the current time does not match the alarm time, step S21
And display the date and time data on the display unit 8.

If the current time coincides with the alarm time in step S13, the flag F is set in step S14.
A is set to “1”, and one of the flip-flops a, b, and c is set based on the value of the register L in step S15.

For example, if the register L is "1", the flip-flop c is set to sound the alarm sound at the lowest volume, and if the register L is "2", the alarm is set at the second highest volume. The flip-flop b is set to emit a sound. If the register L is "3", the flip-flop "a" is set to sound the alarm sound at the loudest volume.

Thereafter, in step S16, the flip-flop d is set to start supplying the alarm signal from the frequency dividing circuit 2 to each of the AND gates 10 to 12, and then the above-described display processing in step S21 is executed.

If FA = 1 in the determination in step S12, the alarm sound is being sounded, and step S1 is executed.
At 7, it is determined whether or not one minute has elapsed since the start of the alarm sound. If one minute has not elapsed, the alarm tone continues to be emitted, and if one minute has elapsed, the flag FA is set to "0" in step S18.

Further, in step S19, the flip-flop d is reset to stop the supply of the alarm signal, and in step S20, the set flip-flop among the flip-flops a to c is reset. After that, the display processing in step S21 described above is executed.

As described above, in the above embodiment, the volume of the alarm sound is changed between the day after the holiday and the other days, and the day after the holiday of 3 days or more and the day of the holiday 2 days or less are changed. Is used to change the volume of the alarm sound. For example, when the day is not a holiday, an alarm sound is emitted at a normal volume (the smallest volume), and on a day after a holiday of two days or less, an alarm is emitted at the second largest volume, and three days or more. On the day after the holidays, the loudest alarm sounds.

Therefore, even if the awakening is poor after a rest, the alarm sound is emitted at a volume higher than usual on the day after the holiday, so that the awakening can be surely performed.

[0036]

According to the present invention, by changing the volume of the alarm sound between a weekday and a day after a holiday, it is possible to wake up reliably even on a day after a holiday.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of an embodiment.

FIG. 2 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

 5 CPU 6 RAM 6a Holiday storage unit ad Flip-flop R1-13 Base resistor TR1-TR3 Transistor 13 Speaker

Claims (2)

(57) [Claims] 1. Holiday storage means for storing holiday data; alarm sound generation means for generating an alarm sound when the current time reaches an alarm time; and, based on the holiday data, whether the current day is a day after a holiday. An alarm detecting means for detecting the end of holiday, and a volume changing means for changing the volume of the alarm sound when the holiday detecting means detects that the current day is a day after the holiday. clock. 2. Holiday storage means for storing holiday data, alarm sound generation means for generating an alarm sound when the current time reaches an alarm time, and whether or not the current day is a day after a holiday based on the holiday data. Holiday day detecting means for detecting the number of consecutive holidays on the current day based on the holiday data, and holiday day number detecting means for detecting how many consecutive days the current day is a holiday. The holiday day detecting means detects that the day is a day after the holiday. An alarm clock, comprising: a sound volume varying unit that varies a volume of the alarm sound in accordance with the number of holiday days detected by the holiday days detecting unit when the alarm clock is detected.