JPH048686Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is a dial system that converts a pre-entered or stored telephone number into a dial tone and outputs it instead of actually operating the dial (or push button) of a telephone. This invention relates to a sound generator.

[Conventional technology]

With conventional dial tone generators, by specifying the desired telephone number and then pressing the execution switch,
A dial tone corresponding to the telephone number can be output from the speaker to the transmitter of the telephone. At this time, the output of the dial sound is automatically started after a predetermined period of time has elapsed (for example, about 3 seconds) after the execution switch is pressed. A sound insulating member made of rubber or the like is provided around the speaker, and when dial sound is output, this sound insulating member is brought into close contact with the transmitter to block external noise from the speaker. It's summery.

[Problems with conventional technology]

When outputting dial sound using the above conventional device,
After pressing the execution switch and before the predetermined time period elapses, the speaker must be placed so as to face the transmitter of the telephone so that external sounds are blocked by the sound insulating member. However, even if the speaker is placed in an inappropriate position, output of the dial sound will start as long as the predetermined time has elapsed. Therefore, even though the dial tone is output from the speaker, the dial tone is often not input to the transmitting unit, resulting in a problem that calls cannot be made successfully.

[Purpose of invention]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a dial sound generating device that can reliably output a dial sound to a transmitting section of a telephone with simple operation.

[Key points of the idea]

In order to achieve the above object, the present invention detects external noise, and when the detected volume becomes lower than a predetermined volume, the device moves to an appropriate position relative to the transmitter of the telephone. In this example, the output of a dial tone is started.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of an electronic wristwatch incorporating an embodiment of the present invention. In the figure, a watch body 1 includes a display section 2 for displaying the time, telephone number, etc., and a microphone 3 that also serves as a speaker and for outputting a dial sound and detecting surrounding noise.
Furthermore, an annular sound insulating member 4 made of an elastic material such as rubber is attached so as to surround the display section 2 and the speaker/microphone 3. This sound insulating member 4 can be placed in close contact with the transmitting section of the telephone when outputting a dial sound, and when in close contact, external noise is blocked from the speaker/microphone 3. . Additionally, on the side of the watch body 1, there is a mode changeover switch S1 for alternating the display mode of the display section 2 between watch mode and telephone mode, and a mode changeover switch _S1 for adjusting the time, setting a telephone number, etc. A correction switch _S2 , a search switch _S3 that is operated when searching for a necessary name and telephone number from the storage section 15, which will be described later, and a dial tone corresponding to the telephone number read out by this search switch _S3 . An execution switch _S4 is provided which is operated when outputting.

Next, FIG. 2 shows the internal configuration of this embodiment.
In the figure, the switches S ₁ to _{S 4} , the display section 2 and the speaker/microphone 3 are the same as those shown in FIG. 1. When each of the switches _S1 to _S3 is operated, each block is controlled by the switch control section 10 based on the operation.

First, when the display mode is switched to clock mode by the mode changeover switch _S1 , the oscillator 1
A clock signal of a constant frequency output from 1 is divided by a frequency divider circuit 12, and further divided by a counter circuit 13.
is counted a predetermined number of times to obtain time data such as hours, minutes, seconds, etc. This time data is then displayed on the display section 2 by the switching display drive section 14.

In the above clock mode, press the mode selector switch S ₁
When is operated, the display mode switches to telephone mode. In this mode, it is possible to set a telephone number, output a dial tone, etc.

First, the storage unit 15 includes a plurality of storage areas,
Names and telephone numbers of multiple people can be stored in the storage areas. Therefore, when the search switch _S3 is operated in the telephone mode, each storage area in the storage section 15 is sequentially specified. Then, the contents of this designated storage area (name and telephone number for one person) are temporarily stored in the one-page storage section 16. The storage contents of the storage section 15 can be set or changed by specifying an arbitrary storage area with the search switch _S3 and then operating the modification switch _S2 .

When the execution switch _S4 is operated in the above-mentioned telephone mode, a dial tone can be output.
When the execution switch _S4 is operated, the Q output of the flip-flop 17 is maintained at H (high) level, and the frequency dividing circuit 12 outputs 10Hz every 1/10 seconds.
Signal a can now pass through AND circuit 18. This 10Hz signal a is transmitted to a noise detection section 20, which will be described later.
and sent to the arithmetic unit 21. On the other hand, ambient noise is converted into an electrical signal by the speaker/microphone 3, amplified by the amplifier circuit 19, and then the noise detector 2
Sent to 0. This noise detection unit 20 has the above-mentioned 10Hz
According to signal a, the noise volume is detected every 1/10 seconds. The detection results every 1/10 second are sent to the calculation unit 21, where the average of the 10 detection results, that is, 1
Calculate the average for seconds. This calculation result is held in the latch circuit 22, and is also held in the comparison detection section 23.
sent to. This comparison detection section 23 includes a calculation section 21
The calculation result obtained by the calculation unit 21 is successively compared with the previous calculation result held in the latch circuit 22 in accordance with the operation command signal b outputted from the 1-second interval 1/2 of the result
(below), the flip-flop 24 is set. When the flip-flop 24 is set, its Q output becomes H level, and the gate 25
opens.

Then, the telephone number stored in the 1-page storage section 16 (that is, the telephone number read out from the storage section 15 by operating the search switch 3) passes through the gate 25 and is input to the tone dial waveform generation section 26. Sent. Tone dial waveform generator 26
generates a tone dial waveform according to the telephone number sent. This tone dial waveform is amplified by the amplifier circuit 27, and the speaker microphone 3
is output as a dial sound. The above noise detection is not performed while the dial sound is being output.

When the tone dial waveform generator 26 finishes outputting the tone dial waveform, it outputs a termination signal c. This termination signal c resets the flip-flop 17, latch circuit 22 and flip-flop 24 to return to their initial states.

When making a telephone call using the device of this embodiment as described above, first switch to the telephone mode with the mode changeover switch _S1 , and then press the search switch _S3 while looking at the name and telephone number displayed on the display section 2. After specifying the desired telephone number, operate execution switch _S4 . Then, when the transmitting part of the telephone is brought into close contact with the sound insulating member 4 shown in FIG. 1, the output of the dial sound starts. In other words, when the transmitter is placed in close contact with the speaker/microphone 3, external noise is blocked, so the noise detected by the noise detector 20 is much smaller than the noise when the transmitter is not in close contact (at least (It will be less than 1/2). Then, the average value for one second obtained by the calculation section 21 also becomes 1/2 or less, and when this is detected by the comparison detection section 23, the output of the dial sound is started. Therefore, the sound insulation member 4
The dial sound will be output only when the transmitting section is brought into close contact with the transmitting section, that is, only when the speaker/microphone 3 is placed at an appropriate position relative to the transmitting section. Therefore, the dial sound output from the speaker-cum-microphone 3 is always input to the transmitter, so that the call can be made without fail.

Note that the interval at which the noise detection unit 20 detects noise is not limited to 1/10 second, but may be set to any time. Further, the noise level when outputting the dial sound is started does not need to be limited to 1/2 as described above, and may be set as appropriate depending on the material, shape, etc. of the device.

Furthermore, the present invention can be applied not only to the above-mentioned wristwatch but also to various electronic devices such as a small electronic calculator.

[Effect of idea]

According to the present invention, it is possible to output a dial tone to the transmitting part of a telephone with a simple operation and reliably, so that even though the dial tone is output, a call is not received. This situation will no longer exist.

[Brief explanation of drawings]

FIG. 1 is an external view showing an electronic wristwatch incorporating an embodiment of the present invention, and FIG. 2 is a block diagram showing the internal structure of the embodiment. 3...Mic that doubles as a speaker, 4...Sound insulation member,
15...Storage unit, 20...Noise detection unit, 21...
Arithmetic unit, 23... Comparison detection unit, 26... Tone dial waveform generation unit.

Claims (1)

[Claims for Utility Model Registration] Storage means for storing telephone number data; dial sound output means for converting the telephone number data stored in the storage means into a dial sound and outputting it to a telephone; and the dial sound. a sound insulating means that is brought into close contact with the transmitting section of the telephone to isolate the dial sound output means from external noise when the sound is output; a noise detecting means that detects the external noise via the sound insulating means; and the noise detecting means. 1. A dial sound generating device comprising: dial sound output control means for starting output of the dial sound based on the volume of the noise detected in the dial sound generating device.