JPH0128354B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic watch with an alarm, and in particular to an alarm clock, which always makes an alarm sound every 24 hours, regardless of whether a ring stop switch is activated.

Electronic watches with alarms generally have high accuracy because they use a vibrator with a stable frequency as a time source.
Therefore, an alarm sound that sounds exactly at the exact time every day is very convenient for waking up. However, analog electronic clocks (which display the time using hands), which are the most popular alarm clocks on the market, open and close every 12 hours because the switch function that sets the alarm time follows the hour hand. The alarm will sound. Therefore, in the case of the above-mentioned analog alarm clock, the hour hand rotates twice a day, so the reference switch is turned on twice according to the reference time. For example, if the alarm time is set at 7 o'clock, the alarm will sound twice at 7 a.m. and at 7 p.m. However, when used as a morning alarm, the pronunciation at 7 p.m. is unnecessary and is more of a noise. Then activate the ring stop switch to prevent the sound from ringing. Therefore, the next morning
Users who wish to sound an alarm sound at certain times have normally deactivated the sound stop switch well after 7:00 pm, for example, before going to bed, in preparation for the sounding of the alarm sound the next morning. However, busy modern users often forget to turn off the alarm, and because the alarm tone is not emitted, they sometimes fall asleep in the morning and end up being late against their will.

The present invention was made in view of the above problems, and
To provide an analog alarm clock that makes an alarm sound only every morning (or every night) regardless of the operating status of a ringing switch, thereby saving the user's effort in canceling the ringing. The present invention will be specifically described below based on examples.

FIG. 1 is an example of a clock circuit diagram providing an alarm device of the present invention, and FIG. 2 is a timing chart of output signals of the main parts of FIG. 1. Switch 1 is a reference switch that turns on and off twice a day following the hour hand, resulting in a frequency of 2 Hz per day as shown in Figure 2A.
It outputs H (high) level, (on state), and L (low) level (off state) signals with a period of . Switch 2 is a sound stop switch; when the alarm is sounding, it is H level. When the alarm is not sounding, it is L level.
Outputs level signal. Switch 3 is a switch that selects the method of sounding the wake-up alarm.
(Sounds every 12 hours), (B) Auto (Always sounds every 24 hours, regardless of whether the sound stop switch is on or off), (C) All off (Guideline switch, does not sound regardless of whether the sound stop switch is on or off) Select one of the three states depending on the purpose. Switch 4 is a check switch for checking whether an alarm will be sounded at the next estimated switch-on time. Next, the state of the output signal due to the operation of each switch will be explained. Signal A input from guide switch 1 is OR
The signal is inputted to a flip-flop 41 via a gate 31 and an inverter 11, and is frequency-divided to obtain a signal B. The switch 2 outputs H and L levels to the signal C. Therefore, the signal C is input to the flip-flop circuit 42 as a clock, and the signal B is used as the data.
When inputted, a clocked signal is obtained when the signal C changes from H to L level. Therefore, the inverted signal of the signal and the signal C are combined by the OR gate 32, and the signal A
An auto signal Q is obtained by combining the AND signal K of the signal B and the AND gate 21. As shown in the timing chart in Figure 2, the signal Q always reaches the reference switch 1 regardless of whether the noise stop switch is on or off.
Outputs H level at the same time as turning on. As a rough guide, when the stop switch 2 is off and the sound is stopped when the switch is turned on, if the stop switch 2 is turned on once and then turned off, the flip-flop 42
is clocked and the signal moves from L level to H level, so signal Q becomes L level and the sound generation stops. After that, the signal is at H level regardless of signal C because data signal B is at H level. Therefore, signal Q changes according to signal C. Furthermore, when the ring stop switch 2 is on and the sound is being generated when the reference switch is turned on, it is clear from the above description that the signal Q is determined by the signal C. Therefore, the alarm (b)
When used in the automatic state, the user only has to operate the sound stop switch 2 once more than in normal times to stop the alarm from sounding. In addition, the flip-flop 42 receives the opening/closing signal A of the reference switch.
Since it is reset at the fall of the alarm signal K, the gate 21 is forcibly opened before the next alarm signal K is output, and the sound is emitted regardless of the state of the ring stop switch. Here, the flip-flop 42, the gate 32, and the inverter connected to them generate a signal that forcibly opens the gate 21, and a signal that stops the gate 21.
It constitutes a control circuit that outputs a signal to close the terminal. Next, the operation of switch 4 will be explained. Once the switch 4 is turned on and off, the flip-flop 41 is advanced by one clock through the OR circuit 31. Therefore, as shown in FIG. 3, the level of signal B is inverted once by one operation of switch 4. Therefore, the alarm sounding state at the next estimated switch-on time is reversed. Therefore, the user may, for example,
By operating the switch 4 once, the alarm time that used to sound at 7 a.m. can be easily changed to 7 p.m. Also, by switch 4,
To easily correct the reversal of alarm time in the morning and afternoon due to force majeure when replacing batteries, etc. When switch 4 is turned on, the inversion signal of signal B
By performing AND, if the alarm is sounded at the next wake-up time, the alarm will be sounded during the ON time of the switch 4. This allows the user to confirm that the alarm will sound at the next alarm time. Also, if the alarm does not sound even when the switch 4 is turned on, it is known that the alarm will not sound at the next wake-up time. If the circuit shown in Figure 1 is used, and the switch 3 is set to the auto state (b), the ringer will automatically turn on and off every 24 hours by skillfully utilizing the characteristics of the flip-flop clock. It is possible to generate an alarm sound.

As described above, the present invention provides an electronic clock with an alarm that always sounds every morning (or every night).
The present invention has great significance because it is extremely convenient for modern people who worry about being late.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention. 2 and 3 are timing charts of signals in the main parts of the circuit of FIG. 1. 1: Reference switch, 2: Stop ringing switch,
3: Selection switch, 4: Check switch, 1
1: Inverter, 21: AND gate, 31: OR
Gate, 32: OR gate, 41: Flip-flop, 42: Flip-flop.

Claims (1)

[Scope of Claims] 1. A reference switch that opens and closes once every 12 hours in response to the operation of a pointer, a ring stop switch that outputs a signal to stop the alarm from sounding, and a 24-hour cycle based on the output signal of the reference switch. means for forming a signal; sound emitting means for emitting a sound in response to an alarm signal output once every 24 hours based on the 24-hour cycle signal and the output signal of the reference switch; and the alarm signal and control circuit. a gate circuit that receives an output signal from the control circuit and selectively prohibits the supply of the alarm signal to the sound emitting means based on the output signal from the control circuit; an output signal that forces the gate circuit to open before the next alarm signal is supplied;
An electronic timepiece with an alarm, characterized in that an output signal for closing the gate circuit is output to the gate circuit based on the ring stop signal when the sound is emitted.