JPS6236548B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound generation circuit for a watch, and particularly to a sound generation circuit for a watch that can generate onomatopoeic sounds such as birds or insects.

Clocks with a sounding mechanism are well known, and are particularly used as alarm clocks or time-signal clocks. In these conventional devices, the alarm sound or time-signal sound is usually generated by a buzzer or a bell with a hammer. It was performed with the sound of tapping. In recent electronic watches, electronic circuits have also been used for such sound-producing mechanisms, and alarm sounds or time-signal sounds have been generated by chimes and the like.

However, these conventional devices have a problem in that they do not necessarily provide a sounding effect that gives a pleasant feeling to the user.

An object of the present invention is to generate a sound that is pleasant to the user, specifically, a bird's voice or an insect's cry, and to easily switch and select from a variety of bird or insect onomatopoeias to create a desired onomatopoeic sound. An object of the present invention is to provide a sound generation circuit for a clock that makes an alarm or a time signal.

In order to achieve the above object, the present invention provides a notification operation start device that outputs a notification operation start signal at a preset time, and an oscillation stop signal output terminal connected to the output terminal of the notification operation start device. and a control circuit that outputs an oscillation stop signal and a reset signal from a reset signal output terminal and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal exists, and an oscillation stop signal output of this control circuit. a sound generation period reference signal generator connected to a terminal, which does not output a sound generation reference signal in the presence of the oscillation stop signal, and outputs a sound generation period reference signal of a constant frequency in response to cancellation of the oscillation stop signal; A reset signal input terminal is connected to a reset signal output terminal of the circuit, a clock input terminal is connected to a sound generation period reference signal output terminal of the sound generation period reference signal generator, and the sound generation period reference is reset in response to the release of the reset signal. A frequency division ratio selection counter that counts signals and has an output terminal of a normal rotation terminal and an inversion terminal for each output of each stage to be counted, and a pair of normal rotation terminal and inversion terminal of the output of all stages of this frequency division ratio selection counter. a frequency division ratio changeover switch that selects the normal rotation terminal and the inversion terminal and connects them to each frequency division ratio selection signal output terminal; a sound generation reference signal generator that does not output a sound generation reference signal in the presence of the signal and outputs a sound generation reference signal having a higher frequency than the sound generation frequency reference signal in response to cancellation of the oscillation stop signal; and a reset signal for the control circuit. A reset signal input terminal is connected to the output terminal, and a plurality of frequency division ratio selection input terminals are connected in correspondence to the frequency division ratio selection signal output terminals of each stage of the frequency division ratio selection switch, so that the sound generation reference signal generator generates sound. A clock input terminal is connected to the reference signal output terminal, and in response to release of the reset signal, the frequency of the sound generation reference signal is divided according to the state of each frequency division ratio selection input terminal, and the frequency-divided signal is output. The present invention is characterized in that it includes a program frequency divider and a sound generator connected to the program frequency divider and driving a sound generating element in accordance with the frequency-divided signal.

The present invention also provides a notification operation start device that outputs a notification operation start signal at a preset time, and an output terminal connected to the output terminal of the notification operation start device, and normally from an oscillation stop signal output terminal and a reset signal output terminal. a control circuit that outputs an oscillation stop signal and a reset signal, and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal is present; A sound generation reference signal generator that does not output a sound generation reference signal in the presence of an oscillation stop signal and outputs a sound generation reference signal in response to cancellation of the oscillation stop signal, and a sound generation reference signal output terminal of this sound generation reference signal generator. a frequency divider which divides the frequency of the sound generation reference signal and outputs a sound generation period reference signal having a constant frequency lower than that of the sound generation reference signal; and a reset signal input terminal is connected to the reset signal output terminal of the control circuit; A clock input terminal is connected to the output terminal of the sound generation cycle reference signal of the frequency divider, the clock input terminal is configured to count the sound generation cycle reference signal in response to release of the reset signal, and has an output terminal for each output of each counting stage. It is connected to a frequency division ratio selection counter and at least two specific stage output terminals of this frequency division ratio selection counter, and these output terminals are exchanged with each other.
A frequency division ratio selection switch is connected to one or more frequency division ratio selection signal output terminals, and a reset signal input terminal is connected to a reset signal output terminal of the control circuit. A plurality of frequency division ratio selection input terminals are connected in correspondence with the frequency ratio selection signal output terminal, a clock input terminal is connected to the sound generation reference signal output terminal of the sound generation reference signal generator, and in response to the release of the reset signal, a clock input terminal is connected to the sound generation reference signal output terminal of the sound generation reference signal generator. a program frequency divider that divides the frequency of the sound generation reference signal according to the state of each frequency division ratio selection input terminal and outputs the frequency-divided signal; and a sound generator that drives the sound generating element.

Further, the present invention includes a notification operation start device that outputs a notification operation start signal at a preset time, and an output terminal of the notification operation start device that is connected to the output terminal, and normally starts oscillation from an oscillation stop signal output terminal and a reset signal output terminal. a control circuit that outputs a stop signal and a reset signal and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal is present; a sounding reference signal generator that does not output a sounding reference signal in the presence of a stop signal and outputs a sounding reference signal in response to cancellation of the oscillation stop signal;
a frequency divider connected to the sound generation reference signal output terminal of the sound generation reference signal generator and configured to divide the sound generation reference signal and output a sound generation period reference signal having a constant frequency lower than the sound generation reference signal; A reset signal input terminal is connected to the reset signal output terminal, a clock input terminal is connected to the sound generation period reference signal output terminal of the frequency divider, and the sound generation period reference signal is counted in response to the cancellation of the reset signal; A frequency division ratio selection counter has an output terminal for each output of each stage to be counted, and a frequency division ratio selection counter is connected to a specific stage output terminal of this frequency division ratio selection counter, and this output terminal and a ground terminal are switched to each other to select a frequency division ratio. A frequency division ratio selection switch is connected to the signal output terminal, a reset signal input terminal is connected to the reset signal output terminal of the control circuit, and a division ratio selection signal output terminal of the frequency division ratio selection counter and the frequency division ratio selection switch is connected to the reset signal output terminal of the control circuit. A plurality of frequency division ratio selection input terminals are connected in correspondence, a clock input terminal is connected to a sound generation reference signal output terminal of the sound generation reference signal generator, and in response to the cancellation of the reset signal, the sound generation reference signal is outputted to each of the sound generation reference signals. A program frequency divider that divides the frequency according to the state of the frequency division ratio selection input terminal and outputs the divided signal; and a sound generator that is connected to the program frequency divider and drives the sound generation element according to the frequency division signal. It is characterized by having a container.

The present invention will be explained below based on the drawings.

FIG. 1 shows the model characteristics of the sound of a bird's song, with the sound frequency plotted on the vertical axis versus time on the horizontal axis. As is clear from Figure 1, the onomatopoeic sound of a bird's song exhibits a periodic waveform that repeats at a nearly constant pronunciation period T _a , and has a changing characteristic in which the frequency continuously decreases within each pronunciation period T _a . show.

Of course, the characteristic diagram in Figure 1 shows an extremely basic model, and actual bird chirps or insect calls are much more complex, and the pronunciation period itself changes.
Furthermore, it is clear that the change characteristics within the sound generation period T _a are also complex characteristics.

Therefore, in the present invention, if the sounding effect is performed at a frequency that repeatedly changes with the sounding period T _a , and the frequency change characteristics at this time can be arbitrarily selected,
You can obtain the onomatopoeic sound of a desired bird or insect,
By using this as an alarm sound, a time signal sound, or a background sound during a time signal operation, it is possible to obtain a sound-producing timepiece that gives the user an extremely pleasant feeling.

The present invention provides a clock sounding circuit based on the above-mentioned basic principle, and FIG. 2 shows the first invention.

In FIG. 2, the pronunciation reference signal generator 10 outputs a pronunciation reference signal of a constant frequency, and in order to obtain the model pronunciation characteristics as shown in FIG. It is necessary to form it from an oscillator that outputs a sound reference signal having the following characteristics.

The output of the sound generation reference signal generator 10 is supplied to a program frequency divider 12, which divides the frequency of the sound generation reference signal according to a predetermined program, and outputs the result from the program frequency divider 12 as a sound generation signal whose frequency changes.
In the embodiment, the program frequency divider 12 is formed of a programmable frequency divider whose frequency division ratio can be arbitrarily set in advance, and a plurality of different frequency division ratios are sequentially selected according to a predetermined program. The tone generation reference signal supplied to the clock input can be frequency-divided and output.

In order to sequentially select the programmed division ratios of the programmed frequency divider 12, each D of the frequency divider 12 is selected.
The Q output of the frequency division ratio selection counter 14 is supplied to each input, and the frequency division ratio corresponding to the frequency changing within the sound generation period T _a shown in FIG. 1 is determined by the Q output, that is, the frequency division ratio selection signal. is selectively read out from the program frequency divider 12. The frequency division ratio selection counter 14 sequentially counts the sound generation period reference signal supplied to the clock input, and at this time supplies Q or the output, that is, the count output, to the program frequency divider 12 as a frequency division ratio selection signal, and outputs the count output. The frequency division ratio of the program frequency divider 12 is sequentially selected by . The frequency division ratio selection counter 14 in the embodiment performs a repetitive counting operation by counting a predetermined number of clock inputs.

A characteristic feature of the present invention is that the frequency division ratio selection signal of the frequency division ratio selection counter 14 is supplied to the program frequency divider 12 via the frequency division ratio changeover switch 13. Each of the switches 13 has its fixed contact connected to the program frequency divider 1.
One of the switching contacts is connected to each Q output of the frequency division ratio selection counter 14, and the other is connected to the output. Therefore,
By selectively switching one of the frequency division ratio selection switches 13, the combined output from the frequency division ratio selection counter 14 can be arbitrarily changed and supplied to the program frequency divider 12. It becomes possible to set a desired frequency division ratio selection order.

A tone generation period reference signal generator 16 is provided to supply a tone generation period reference signal to the clock input of the frequency division ratio selection counter 14, and the tone generation period T _a is determined by the tone generation period reference signal.

The frequency divided output of the program frequency divider 12 described above is
The signal is supplied to the sound generator 18, and the sound generating elements of the sound generator 18 are driven in accordance with the frequency-divided output. The sound generator 18 in the embodiment includes an amplifier 20 and a speaker 22 forming a sound generation element, and after the frequency-divided output of the program frequency divider 12 is amplified by the amplifier 20, the speaker 22 is driven, and changes repeatedly with a sound generation period T _a . It is possible to perform a sound effect at a certain frequency.

It is incorporated into the alarm clock as shown in the diagram.
An alarm signal is detected from the reference contact 26 of the clock mechanism section 24, and the control circuit 28 is activated by the alarm signal.
is operated to control each of the circuits. That is, the control circuit 28 normally supplies a reset signal to the program frequency divider 12 and the frequency division ratio selection counter 14, and also supplies a generation stop signal to both reference signal generators 10 and 16. .
When the reference contact 26 of the clock mechanism section 24 is turned on, the control circuit 28 can cancel the reset signal and the oscillation stop signal and start the circuit operation.

The first invention has the above configuration, and its operation will be explained below.

First, assume that each switch of the frequency division ratio changeover switch 13 is switched to each Q output side of the frequency division ratio selection counter 14, as shown in FIG.

When the time indicated on the watch reaches the estimated time,
The reference contact 26 turns on, and the control circuit 28 puts each circuit into operation. As a result, the sound reference signal generator 10 outputs a sound reference signal of a constant frequency, in this embodiment, a reference signal of 1 MHz, to the programmed frequency divider. Output to 12. At the same time, the sound generation period reference signal generator 16 outputs a low frequency signal, 380Hz in this embodiment.
The sound generation period reference signal is supplied to the frequency division ratio selection counter 14, and the frequency division ratio selection counter 14 starts counting the sound generation period reference signal. counter 14
In its initial state, each Q output is "0000000"
At this time, the program frequency divider 12 is
A sound signal of 8KHz is output to the sound generator 18. Then, each time the frequency division ratio selection counter 14 counts the sound generation period reference signal, its Q output is "0000001",
Change it to "0000010"... and program frequency divider 1
2 selects a preprogrammed frequency division ratio in accordance with this frequency division ratio selection signal, and outputs the frequency-divided sounding reference signal based on this frequency division ratio. In the embodiment, the program frequency divider 12 sequentially performs a selection operation to increase its frequency division ratio according to a predetermined program, and as a result, a frequency conversion operation corresponding to the mode characteristic shown in FIG. 1 is performed within the sound generation period T _a . can be done.

When the frequency division ratio selection counter 14 counts 27 sound generation period reference signals, its count output, that is, the frequency division ratio selection signal, becomes "1111111", and at this time, the program frequency divider 12 determines that the frequency division ratio corresponds to the sound generation reference signal. A frequency division ratio that divides the frequency to approximately 4KHz will be selected. Then, the frequency division ratio selection counter 14 counts up in response to the input of the next sound generation cycle reference signal, returns to the initial state, and repeats the counting operation again.

As described above, according to the first embodiment, approximately
The frequency changes as shown in FIG. 3 corresponding to the characteristics shown in FIG. 1 are repeated at a sound generation period T _a of about 300 milliseconds, and the sound generator 18 performs a sound generation operation in response to a sound signal whose frequency continuously changes. As a result, the user can receive an alarm notification as an onomatopoeic sound of a bird's song or an insect's voice, and can hear an extremely pleasant alarm sound.

Further, in the present invention, the frequency division ratio selection order can be arbitrarily set by switching the frequency division ratio changeover switch 13, and the frequency change within the sound generation period T _a can be made into a more complex change. becomes possible,
Another feature is that the user can arbitrarily select and set different pronunciation characteristics by simply switching a switch.

The change in the combination output of the frequency division ratio selection signal in the present invention is shown in FIG. 2 as an example in which the changeover switch of the 6th bit (n-1) is changed from the Q output to the output. In this case, the output of the frequency division ratio selection counter 14 starts from "0100000" and sequentially changes to "0100001", "0100010", etc. every time the sound generation period signal is counted.
When the number of sound generation period reference signals is counted, the count output, that is, the frequency division ratio selection signal becomes "1011111". Therefore, the output waveform of the program frequency divider 12 at this switching time is as shown in FIG.
Compared to the diagram, the frequency changes within each sound generation period T _a are significantly more complex, and the advantage is that a sound effect similar to that of an actual bird's song can be obtained.

As described above, according to the first invention, the user can arbitrarily operate the changeover switch of the frequency division ratio changeover switch 13 to select a sound effect having complicated frequency change characteristics. This has the advantage of providing a multifunctional pronunciation clock.

Although the present embodiment is incorporated into an alarm clock and a reference signal is supplied to the control circuit 28, it is also possible to incorporate the present invention into a time signal, and a desired time signal is supplied at each hour on the hour. It is also preferable to use the onomatopoeic sound as the background sound for the time signal function or the time signal function. In addition, in the embodiment, the clock mechanism section 2
Although 4 is shown as an analog clock, it is of course possible to use a digital clock or the like.

A second invention is shown in FIG. 5, and the same members as in FIG. 2 are given the same reference numerals and their explanations will be omitted.

In this invention, the sound generation period reference signal generator is formed of a frequency divider 30 that divides the frequency of the sound generation reference signal and outputs the sound generation period reference signal, and the sound generation reference signal of the sound generation reference signal generator 10 is supplied. This invention consists of a multi-stage frequency divider, and has the advantage of not requiring an independent oscillator like the first invention.

The frequency division ratio selection switch 13 includes a switch that mutually switches at least two outputs of the frequency division ratio selection counter 14, and in FIG.
The bits are switchably connected, and by switching this interlocking switch, a desired frequency division ratio selection order can be set. FIG. 6 shows the sound generation signal output of the second invention, and it is understood that it has a complicated waveform different from the waveform in FIG. 4, and by switching the switch 13, the waveform shown in FIG. It is possible to switch between the waveform and the general waveform shown in FIG. 1 or 3.

A third invention is shown in FIG. 7, and since it is similar to FIG. 5, the same members are given the same reference numerals and their explanation will be omitted.

The frequency division ratio switch 13 is the program frequency divider 1.
The frequency division ratio selection counter 14 is composed of a switch that switches at least one input of the frequency division ratio selection counter 14 between the corresponding output of the frequency division ratio selection counter 14 and a ground terminal, and the frequency division ratio selection signal of the seventh bit is switched. According to this FIG. 7, the seventh bit input of the program frequency divider 12 can always be set to "0", and as shown in the waveform diagram of FIG. 8, the sound generation period T _a is halved. The sound generation signals shown in FIG. 3 and FIG. 8 can be selectively switched. As is clear from FIG. 8, the present invention has the advantage that the sound generation period T _a is shortened, and as a result, the width of frequency change is also reduced, and the tone of the onomatopoeic sound can be changed significantly.

As explained above, according to the present invention, it is possible to perform a sounding operation with a frequency that repeatedly changes at a predetermined sounding cycle, and further to switch and change this frequency change as appropriate by switching the frequency division ratio switch. Therefore, it is possible to obtain a desired onomatopoeic sound of a bird, insect, etc., thereby providing a sound generation circuit for a watch that makes an alarm or time signal that gives the user a sense of pleasure.

[Brief explanation of the drawing]

FIG. 1 is a model characteristic diagram of the onomatopoeic sound obtained by the present invention, FIG. 2 is a block circuit diagram showing the sound generation circuit for a clock according to the first invention, and FIGS.
Figure 5 is a block circuit diagram showing the second invention, Figure 6 is a diagram showing the sound generation signal characteristics in the second invention, Figure 7 is a block circuit diagram showing the third invention. It is a sound generation signal characteristic diagram in the third invention. T _a ... Sound generation period, 10 ... Sound generation reference signal generator, 12 ... Program frequency divider, 13 ... Frequency division ratio selection switch, 14 ... Frequency division ratio selection counter, 1
6... Sound generation period reference signal generator, 18... Sound generator.

Claims (1)

[Scope of Claims] 1. A notification operation start device that outputs a notification operation start signal at a preset time; and a device connected to an output terminal of the notification operation start device,
A control circuit that normally outputs an oscillation stop signal and a reset signal from an oscillation stop signal output terminal and a reset signal output terminal, and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal exists; A sound generation period that is connected to the oscillation stop signal output terminal of the control circuit, does not output a sound generation cycle reference signal in the presence of the oscillation stop signal, and outputs a sound generation cycle reference signal of a constant frequency in response to cancellation of the oscillation stop signal. A reset signal input terminal is connected to a reference signal generator and a reset signal output terminal of the control circuit, a clock input terminal is connected to a sound generation cycle reference signal output terminal of the sound generation cycle reference signal generator, and the reset signal is released. a frequency division ratio selection counter that counts the sound generation period reference signal in response to the frequency division ratio selection counter and has an output terminal of a normal rotation terminal and an inversion terminal for each output of each counting stage, and outputs of all stages of the frequency division ratio selection counter. a frequency division ratio switching switch connected to a normal rotation terminal and an inversion terminal pair of the control circuit, and selecting the normal rotation terminal and the inversion terminal, respectively, and connecting them to each frequency division ratio selection signal output terminal; and an oscillation stop signal output of the control circuit. a sound generation reference signal generator connected to the terminal, which does not output a sound generation reference signal in the presence of the oscillation stop signal, and outputs a sound generation reference signal having a higher frequency than the sound generation cycle reference signal in response to release of the oscillation stop signal; A reset signal input terminal is connected to the reset signal output terminal of the control circuit, and a plurality of frequency division ratio selection input terminals are connected in correspondence to the frequency division ratio selection signal output terminals of each stage of the frequency division ratio selection switch. , a clock input terminal is connected to the sounding reference signal output terminal of the sounding reference signal generator, and in response to the release of the reset signal, the sounding reference signal is frequency-divided according to the state of each of the frequency division ratio selection input terminals. and a program frequency divider that outputs the frequency-divided signal; and a sound generator connected to the program frequency divider and that drives a sound element according to the frequency-divided signal. circuit. 2. A notification operation start device that outputs a notification operation start signal at a preset time; and a device connected to an output terminal of the notification operation start device;
A control circuit that normally outputs an oscillation stop signal and a reset signal from an oscillation stop signal output terminal and a reset signal output terminal, and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal exists; a sound generation reference signal generator that is connected to an oscillation stop signal output terminal of a control circuit, does not output a sound generation reference signal in the presence of the oscillation stop signal, and outputs a sound generation reference signal in response to cancellation of the oscillation stop signal; a frequency divider connected to the sound generation reference signal output terminal of the sound generation reference signal generator and configured to divide the sound generation reference signal and output a sound generation period reference signal having a constant frequency lower than the sound generation reference signal; A reset signal input terminal is connected to the reset signal output terminal, a clock input terminal is connected to the sound generation period reference signal output terminal of the frequency divider, and the sound generation period reference signal is counted in response to the cancellation of the reset signal; A frequency division ratio selection counter having an output terminal for each output of each stage to be counted; and a frequency division ratio selection counter connected to at least two specific stage output terminals of this frequency division ratio selection counter; A frequency division ratio selection switch is connected to the frequency division ratio selection signal output terminal, and a reset signal input terminal is connected to the reset signal output terminal of the control circuit, and the frequency division ratio selection counter and the frequency division ratio selection switch are connected to each other. A plurality of frequency division ratio selection input terminals are connected to the signal output terminal in correspondence with each other, a clock input terminal is connected to the sound generation reference signal output terminal of the sound generation reference signal generator, and the sound generation standard is set in response to the cancellation of the reset signal. a program frequency divider that divides the frequency of the signal according to the state of each frequency division ratio selection input terminal and outputs the frequency-divided signal; and a sound generating element connected to the program frequency divider according to the frequency division signal. A sound generation circuit for a watch, comprising: a sound generator for driving; and a sound generation circuit for a watch. 3. A notification operation start device that outputs a notification operation start signal at a preset time; and a device connected to an output terminal of the notification operation start device,
A control circuit that normally outputs an oscillation stop signal and a reset signal from an oscillation stop signal output terminal and a reset signal output terminal, and releases the output of the oscillation stop signal and reset signal on the condition that the notification operation start signal exists; a sound generation reference signal generator that is connected to an oscillation stop signal output terminal of a control circuit, does not output a sound generation reference signal in the presence of the oscillation stop signal, and outputs a sound generation reference signal in response to cancellation of the oscillation stop signal; a frequency divider connected to the sound generation reference signal output terminal of the sound generation reference signal generator and configured to divide the sound generation reference signal and output a sound generation period reference signal having a constant frequency lower than the sound generation reference signal; A reset signal input terminal is connected to the reset signal output terminal, a clock input terminal is connected to the sound generation period reference signal output terminal of the frequency divider, and the sound generation period reference signal is counted in response to the cancellation of the reset signal; A frequency division ratio selection counter having an output terminal for each output of each stage to be counted, and a frequency division ratio selection counter connected to a specific stage output terminal of this frequency division ratio selection counter, and switching this output terminal and a ground terminal to each other to select a frequency division ratio. A frequency division ratio selection switch is connected to the signal output terminal, a reset signal input terminal is connected to the reset signal output terminal of the control circuit, and a division ratio selection signal output terminal of the frequency division ratio selection counter and the frequency division ratio selection switch is connected. A plurality of frequency division ratio selection input terminals are connected in correspondence, a clock input terminal is connected to a sound generation reference signal output terminal of the sound generation reference signal generator, and in response to the cancellation of the reset signal, the sound generation reference signal is outputted to each of the sound generation reference signals. A program frequency divider that divides the frequency according to the state of the frequency division ratio selection input terminal and outputs the divided signal; and a sound generator that is connected to the program frequency divider and drives the sound generation element according to the frequency division signal. What is claimed is: 1. A sounding circuit for a watch, comprising: