JPH028276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clock that generates a melody as an alarm sound and a bell sound or a buzzer sound as another monotonous alarm sound due to repetition of sounds from the same circuit.

Conventionally, the sounding devices used in clocks were music boxes, bells, buzzers, etc., but because they were mechanical, they took up a lot of space inside the clock body.
Watches were still far from being miniaturized. Furthermore, almost all of these devices use a spring as a power source, and once the alarm is activated, the mainspring must be wound in order to operate the alarm the next time, which is inconvenient. The integrated circuit of a watch that has a built-in integrated circuit that generates an acoustic signal is only one that can output only a buzzer sound, and as shown in FIG.
The only option available was a method in which the electro-acoustic converter was driven by the acoustic signal amplified by the 14 amplifying sections, which consisted of a 2 frequency dividing section, 13 buzzer sound synthesizing sections, and 14 amplifying sections. According to this method, the only acoustic signal that can be generated as an alarm sound is the buzzer sound, so it is not possible to generate a wide variety of acoustic signals such as melodies, bell sounds, buzzer sounds, etc., and the product value of the alarm clock is significantly reduced. was. Also, when considering generating a wide variety of acoustic signals such as melodies, bell sounds, buzzer sounds, etc.
Separate circuits are required for each buzzer sound generation, and the circuits are complicated, which can lead to failures. In addition, because the circuit requires a large number of integrated circuit elements, it is extremely difficult to incorporate them into the watch body, making it difficult to realize a watch with a complex alarm function. Ta.

The purpose of the present invention is to eliminate such conventional drawbacks, and to automatically generate a melody and other alarm tones (bell sound,
The purpose is to generate a buzzer sound, etc.).

Another object of the present invention is to perform switching settings between a melody and other alarm sounds as an alarm sound using a control signal input from the outside of the watch, and to generate the set sound externally as an alarm.

Such a watch with an electronic sound generator of the present invention includes a timekeeping section that counts the time, a reference signal generation section that generates a reference signal, and frequency division ratio data of a melody scale that becomes an alarm sound and frequency division of other alarm sounds. a memory section that stores ratio data; a frequency dividing section that divides the frequency of the reference signal based on the frequency division ratio data read from the memory section; and an envelope that adds an envelope to the output signal from the frequency dividing section. a control section; an electro-acoustic converter that receives an output signal from the envelope control section and generates the melody or the other alarm sound as an alarm; and a switching control signal input from the outside to switch the generated sound. the data read out from the memory section in response to the melody scale or the other alarm sound, and the switched melody scale or the other alarm sound. It is characterized by comprising a control section that sequentially reads frequency division ratio data from the memory section and sends it to the frequency division section.

The present invention will be explained below using the drawings.

FIG. 2 is a diagram showing an embodiment of the electronic sound generating device according to the present invention, in which the 24 control section controls the 25, 26
Reads the melody, bell sound, and buzzer sound data programmed in the memory section. The 25 memory section and the 26 memory section respectively store frequency division ratio data of the melody scale and frequency division ratio data of the bell sound and buzzer sound, and the data is sequentially transferred to the frequency division section according to the control data of the control section. Send. The 22 frequency dividing section divides the reference signal generated by the 21 reference signal generating section using the frequency division ratio data from the 25 and 26 memory sections, and generates a scale signal, a bell sound signal, and a buzzer sound signal. The 23 envelope control section adds an envelope as necessary to the scale signal, bell sound signal, and buzzer sound signal generated by the 22 frequency dividing section according to the envelope addition signal from the 24 control section,
Improve the auditory effect. After passing through a mixing section 29, this signal is amplified at an amplifying section 210 and output as an acoustic signal by an electro-acoustic converter. Further, by amplifying the frequency dividing section 27 and the envelope control section 28 shown by broken lines, it is possible to play the main melody and accompaniment in the melody, and it is possible to provide electronic sounds with rich musicality.

Furthermore, since complex sounds such as bell sounds and buzzer sounds can be output, various alarm sounds can be provided.
Further, a switching control signal for switching the type of electronic sound to be generated is input to the control section 24. This control signal is input from outside the watch. The control section receives this switching control signal, and 25,
The type of frequency division ratio data read from the 26 memory section is switched and outputted, and not only the melody signal but also the bell sound signal is switched and outputted from the frequency division section and the envelope control section. Furthermore, by switching the signal input from the outside to the control section, it is possible to shift to another mode, such as a bell sound, even while a melody is being generated, so a wide range of usage methods can be considered.

In addition, when the time measured by the clock unit and the preset time match, the electronic sound generation control signal outputted from the clock unit is detected, and one of the following sounds is heard: a melody, a bell sound, a buzzer sound, etc. , they can also be generated by switching.

FIG. 3 is a diagram showing an embodiment of the amplifying section of the electronic sound generating device according to the present invention, in which a 33 power amplification stage built in a 31 integrated circuit produces a melody, a bell sound, A buzzer sound is applied and output as an acoustic signal. FIG. 4 is a diagram showing another embodiment of the amplifier circuit, which is used when a large amount of output power is taken out.
Since power amplification is performed using the 44 power amplification transistor, stable operation can be performed without problems such as heat generation within the integrated circuit.

In the method for manufacturing an integrated circuit of an electronic sound generating device according to the present invention, some or all of the elements constituting the circuit are manufactured using a bipolar process or a MOS
Furthermore, the process can be configured using a combination of these processes, and the memory section, frequency division section, etc. can be configured using MOS
By configuring the circuit using a bipolar process and configuring the amplifying section and the like using a bipolar process, the advantages of both can be exploited, resulting in a very useful integrated circuit. Furthermore, since all the electronic circuits can be built into the same integrated circuit, the electronic circuits within the watch body can be grouped together in a very small space, making it possible to downsize the watch body.

In the embodiment of the present invention, when a straight 50 mm speaker is used, the electronic sound generating device including the speaker can be configured with a diameter of 50 mmφ and a thickness of about 20 mm.
When using a unit approximately 55mm x 55mm x 16mm in the watch body, the size including two batteries is 115mm x 60mm x 25mm.
It was possible to construct a watch with just a few steps, and to provide an ultra-compact watch. In addition, as an electronic sound generator,
A simple integrated circuit can generate melodies, bell sounds, and buzzer sounds to create complex acoustic signals with simple operation.Furthermore, the amplification section can be provided as a single integrated circuit, making it an ultra-compact electronic sound generator. can be manufactured.

As described above, the electronic sound generator watch according to the present invention stores the frequency division ratio data of the melody serving as the alarm sound and other alarm sounds in the memory section,
Since the data readout is initially changed according to the control signal input from the outside to the control section, circuits such as the reference signal generation section, frequency division section, envelope control section, amplifier section, etc. are shared, and various types of data can be generated from the same circuit. can output an acoustic signal as an alarm, simplifying the circuit.
Furthermore, the reliability is improved by simplifying the circuit, and the chip area when integrated is reduced, so it is hoped that the cost will be reduced. Furthermore, since it can be implemented as an LSI, it is possible to miniaturize the overall electronic sound production system, which is useful. Therefore,
When applied to an alarm clock or an alarm clock, it is possible to select the electronic sound to be generated according to one's preference, and a wide variety of electronic sounds can be generated from the miniaturized clock.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of a conventionally used timepiece with an electronic sound generator. FIG. 2 is a diagram showing an embodiment of an electronic sound generating device for a timepiece according to the present invention. FIG. 3 is a diagram showing an embodiment of the amplifying section of the electronic sound generator for a timepiece according to the present invention. FIG. 4 is a diagram showing an embodiment of the amplifying section of the electronic sound generator for a timepiece according to the present invention. 11, 21...Reference signal generation section, 12, 22,
27... Frequency division section, 13... Buzzer sound synthesis section, 1
4,210...Amplification section, 15...Timekeeping section, 23,
28... Envelope control unit, 24... Electronic sound control unit, 25, 26... Memory unit, 29... Mixing unit, 31, 41... Integrated circuit, 32, 45... Electric-acoustic transducer, 33... ...Power amplifier circuit, 42...
...Voltage amplification stage, 43...Power amplification transistor (PNP), 44...Power amplification transistor (NPN).

Claims (1)

[Claims] 1. A timekeeping section that counts time, a reference signal generation section that generates a reference signal, a memory section that stores frequency division ratio data of a melody scale that serves as an alarm sound, and frequency division ratio data of other alarm sounds, and the memory. a frequency division section that divides the frequency of the reference signal based on the frequency division ratio data read from the frequency division section; an envelope control section that adds an envelope to the output signal from the frequency division section; and an output from the envelope control section. an electro-acoustic transducer that receives a signal and generates the melody or the other alarm sound as an alarm; and an electro-acoustic converter that receives a signal and generates the melody or the other alarm sound as an alarm; Switching to frequency division ratio data of the melody scale or frequency division ratio data of the other alarm sound, and sequentially reading out frequency division ratio data of the switched melody scale or frequency division ratio data of the other alarm sound from the memory section. 1. A timepiece with an electronic sound generating device, comprising: a control section for causing the frequency dividing section to output the frequency.