JPH0481688A - Alarm apparatus - Google Patents

Abstract

PURPOSE:To prevent a melody or a sound from breaking halfway by stopping generation of an alarm sound signal when a plurality of times of generation of a unit alarm sound signal is completed. CONSTITUTION:A control signal is sent from a control circuit CR to a selection circuit SL and a counting circuit CT, and a signal output from an alarm sound signal generating circuit AS is selectively input to the counting circuit CT to perform counting operation. A completion signal is sent each time one unit of a unit alarm sound signal is terminated from the alarm sound signal generation circuit AS, and the completion signal is input to the counting circuit CT through the selection circuit SL. The counting circuit CT is incremented each time the completion signal is input, and when the counted value reaches a predetermined value, a signal indicating the reaching is sent to the control circuit CR from the counting circuit CT. With the signal received, a stop signal is sent from a stop circuit ST to the alarm sound signal generation circuit AS. As a result, generation of the alarm sound signal in the alarm sound signal generation circuit AS is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an alarm device used in an alarm clock or the like.

[Prior Art] Some alarm devices used in alarm clocks and the like use a melody or voice as an alarm sound. Usually, this type of device repeatedly generates a unit alarm sound of a predetermined length of time, and stops the alarm sound after a certain period of time has elapsed.

[Problem to be Solved] In the conventional alarm device described above, even if the unit alarm sound is in the middle, the generation of the alarm sound is forcibly prohibited when a certain period of time is suitable. Therefore, there was a problem that the melody or voice would be interrupted in the middle.

SUMMARY OF THE INVENTION An object of the present invention is to provide an alarm device in which a melody or voice is not interrupted midway.

[Means for Solving the Problems] The alarm device according to the present invention stops generating the alarm sound signal when the generation of the unit alarm sound signal ends a plurality of times.

[Example] Hereinafter, details of an example of the present invention will be described with reference to FIG. 1.

FIG. 1 is a block diagram mainly showing the circuit portion of an alarm device in an alarm clock.

OC is an oscillation circuit. DV is a frequency dividing circuit which receives an oscillation signal from an oscillation circuit and divides the frequency thereof.

SWI is an alarm switch, which closes when a timer (not shown) reaches the alarm time and outputs an alarm signal.

SW2 is a snooze switch, which is closed by a predetermined operation and outputs a snooze signal.

CR is a control circuit that transmits and receives signals between each of the above-mentioned switches and each circuit block described later. This control circuit CR includes a starting circuit GE and a stopping circuit ST, which will be described later.

AS is an alarm sound signal generation circuit, which repeats a unit alarm sound such as a melody or sound dust that continues for a predetermined time,
It generates an alarm sound signal. Normally, the duration of one unit of the unit alarm sound signal is about several seconds to several tens of seconds. Further, every time one unit of the unit alarm signal is completed, a termination signal is sent to a selection circuit SL, which will be described later. This alarm sound signal generation circuit AS includes a circuit that D/A converts a digital signal sent from a storage circuit MR, which will be described later.
It consists of a circuit that amplifies the D/A converted signal.

MR is a storage circuit that stores one unit of sound information of a unit alarm sound signal as a digital signal, and is mainly composed of a ROM (read only memory).

SP is a speaker, which receives an alarm sound signal from the alarm sound signal generation circuit AS and generates an alarm sound.

GE is a starting circuit which receives an alarm signal from the alarm switch SW1 and starts generation of an alarm sound signal in the alarm sound signal generation circuit AS.

CT is a counting circuit which inputs either the end signal from the alarm sound signal generating circuit AS or the 1 second signal from the frequency dividing circuit DV and counts them.

When counting the end signal, the number of repetitions of the unit alarm sound signal is counted, and when the number of repetitions reaches a predetermined value, a signal is sent to the control circuit CR.

The counting operation of the 1-second signal is for measuring the elapsed time after the snooze signal is generated, and the counting operation of the 1-second signal is performed by the snooze switch SW2.
Control circuit CR after a certain period of time has passed after closing
send a signal to.

SL is a selection circuit that receives a control signal from the control circuit CR and sends either the end signal from the alarm sound signal generation circuit AS or the 1 second signal from the frequency divider circuit DV to the counting circuit CT. It is something.

ST is a stop circuit, and when the counting circuit CT is counting the end signal of the unit alarm sound signal sent from the alarm sound signal generation circuit AS, When the counting circuit CT
In response to the signal from the alarm sound signal generating circuit AS, a stop signal for stopping the generation of the alarm sound signal is sent to the alarm sound signal generation circuit AS. .

At this point, the operation will be explained using the block diagram shown in FIG.

When the alarm switch SW1 is closed by a clock section (not shown) at alarm time, an alarm signal is sent to the control circuit CR. The activation circuit GE receives this alarm signal and activates generation of an alarm sound signal in the alarm sound signal generation circuit AS. At the same time, memory circuit MR
is accessed, and a digital signal corresponding to the unit alarm sound signal is sent from the storage circuit MR to the unit alarm sound signal generation circuit AS. Alarm sound signal generation circuit AS
Then, this digital signal is D/A converted and amplified, and the amplified analog signal is sent to the speaker SP. on the other hand,
A control signal is sent from the control circuit CR to the selection circuit SL and the counting circuit CT, and the alarm sound signal generation circuit A
A counting operation is performed by manually inputting the signal outputted from S to the counting circuit CT. Alarm sound signal generation circuit AS
A termination signal is sent out every time one unit of the unit alarm sound signal is completed, and this termination signal is input to the counting circuit CT through the selection circuit SL. The counting circuit CT counts up each time a termination signal is input, and when the count value reaches a preset value, a signal to that effect is sent from the counting circuit CT to the control circuit CR. Upon receiving this signal, a stop signal is sent from the stop circuit ST to the alarm sound signal generation circuit AS. As a result, alarm sound signal generation circuit A
The generation of the alarm sound signal at S stops.

In this manner, the alarm sound signal generation circuit AS immediately stops generating the alarm sound signal after the end signal is sent from the alarm sound signal generation circuit AS to the counting circuit CT. In other words, the generation of the alarm sound signal stops when one unit of the unit alarm sound signal is completed.

The above operation description is based on the operation of the snooze switch SW during the period from when the alarm switch SWI is closed until the counting circuit CT counts a predetermined number of repetitions of the unit alarm sound signal.
Although the description has been made for the case where the snooze switch SW2 is not operated, if the snooze switch SW2 is operated during this time, the following operation is performed.

When the snooze switch SW2 is closed, a snooze signal is sent to the control circuit CR. Upon receiving this signal,
A stop signal is sent from the control circuit CR to the alarm sound signal generation circuit AS, and the generation of the alarm sound signal is stopped. In this case, the generation of the alarm sound signal immediately stops even if the unit alarm sound signal is in the middle. On the other hand, a control signal is sent from the control circuit CR to the selection circuit SL and the counting circuit CT, and the 1 second signal output from the frequency dividing circuit DV is selectively input to the counting circuit CT.

The counting circuit CT is counted up every time a 1 second signal is input manually, and when the count value reaches a preset value, a signal to that effect is sent from the counting circuit CT to the control circuit CR. Upon receiving this signal, a start signal is sent from the control circuit CR to the alarm sound signal generation circuit AS, and generation of the alarm sound signal is resumed.

In addition to the embodiments described above, the elapsed time after the alarm switch is opened is measured, and after the elapsed time reaches a preset time, the alarm sound signal is emitted in synchronization with the end of the unit alarm sound signal. It is also possible to stop the occurrence of.

[Effects] In the present invention, the generation of the alarm sound signal is stopped when the generation of the unit alarm sound signal has finished multiple times, so the melody, voice, etc. are not interrupted midway, and the alarm device is superior to the conventional one. can be realized.

ST・・・・・・Stop circuit that's all Applicant: Seikosha Co., Ltd. Agent: Patent attorney: Kazuko Matsu 1)

[Brief explanation of drawings]

FIG. 1 is a block diagram mainly showing the circuit portion of the alarm device according to the present invention. AS...Alarm sound signal generation circuit GE...
・Start circuit

Claims (1)

[Claims] An alarm sound signal generation circuit that generates an alarm sound signal by repeating a unit alarm sound signal of a predetermined length such as a melody or voice, and an alarm sound signal generation circuit that generates an alarm sound signal in the alarm sound signal generation circuit upon receiving the alarm signal. An alarm device comprising: a start circuit that starts generation of the alarm sound signal; and a stop circuit that stops the generation of the alarm sound signal in the alarm sound signal generation circuit when the generation of the unit alarm sound signal ends a plurality of times.