JPH0456536A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To prevent throubles to other surrounding people without noticing the arrival of a call when external noise sound is large or when external noise sound is small by setting a tone volume of a call tone to match with the surrounding noise level automatically. CONSTITUTION:The surrounding noise collected by a microphone 1 is converted into an electric signal and given to a noise level measuring section 3. A control signal generating section 4 receives a digital noise level from the noise level measuring section 3 to calculate its mean value and outputs a control signal to a call tone volume adjustment section 6 to select the call tone volume depending on the mean value. The call tone volume adjustment section 6 adjusts the amplitude level of the electric signal being the call tone outputted from a call tone generating section 5 in response to the control signal outputted from the control signal generating section 4 and outputs the result to a speaker 7. Thus, unnoticeable call tone at a noisy location or troubling of other surrounding party due to too large tone volume at a quiet location is avoided.

Description

[Detailed description of the invention] [Industrial application field] TECHNICAL FIELD The present invention relates to a portable radio.

[Conventional technology]

As shown in FIG.
The device was configured to adjust the volume of the ringer output from the device.

[Problem to be solved by the invention]

The conventional portable radio device described above is configured to adjust the ringer volume by manually switching an external switch, so if the surrounding noise level fluctuates greatly when being carried around freely, Manually switching the external switch to change the ringer volume in response to ever-changing noise levels is difficult, making it difficult to hear in noisy areas, or too loud in quiet areas, making it difficult for people around you to adjust the ringer volume. There are disadvantages such as causing inconvenience.

[Means to solve the problem]

The portable wireless device of the present invention includes a control unit that sends out a control signal at preset intervals when in the standby state, and a level that is measured by measuring the level of a received signal from a microphone when the control signal is input. a level measuring unit that converts the digital value into a digital value and sends it; and a ringing volume control signal that receives the digital value, calculates an average value of the digital value within a preset period, and changes the ringing volume from this average value. a ringing tone generating section generating a ringing tone; a ringing tone generating section generating a ringing tone; and a ringing volume adjusting section changing the level of the ringing tone from the ringing tone generating section and amplifying the sound through a speaker by inputting the ringing volume control signal. and a power supply control section that turns on power supply to the level measuring section and the microphone only for a preset period of time in response to input of the control signal from the control section.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention.

In FIG. 1, the first embodiment includes a microphone 1 that converts external noise into an electrical signal, and a control section 2 that outputs a control signal at regular intervals when the portable wireless device of the first embodiment is on standby. , a noise level measuring section 3 that measures the amplitude level of the electrical signal input from the microphone 1 when a control signal is input from the control section 2, and outputs the digital value; and a ring tone generator that generates an electrical signal of a ring tone. 5, a ringing volume adjustment unit 6 that changes the ringing volume using a control signal, and a ringing volume adjustment unit 6 that receives the digital value of the electrical noise signal from the noise level measuring unit 3, calculates and averages a predetermined number of the digital values. The device includes a control signal generating section 4 that generates a control signal to change the ringing volume depending on the magnitude of the ringing sound, and a speaker 7 that amplifies the ringing sound.

Next, the operation of the first embodiment will be explained.

Ambient noise collected by the microphone 1 is input into the noise level measuring section 3 as an electrical signal. The noise level measuring section 3 measures the amplitude level of the electrical signal of noise only when a control signal is input from the control section 2, and outputs the digital value to the control signal generating section 4. Control signal generator 4
Then, when a digital value of the noise level is received from the noise level measurement unit 2 and a predetermined number of digital values of the noise level for a preset period are input, the average value is calculated and called according to the size of the average value. A control signal for switching the volume is output to the ring volume adjustment section 6. The ringing volume adjustment section 6 adjusts the amplitude level of the electrical signal of the ringing tone outputted from the ringing tone generation section 5 in accordance with the control signal outputted from the control signal generation section 4, and outputs it to the speaker 7. Output to
The ringing tone is amplified from the speaker 7.

FIG. 2 is a block diagram showing an example of the configuration of the noise level measuring section shown in FIG. 1, and FIG. 3 is a time chart of noise level measurement when the noise level measuring section shown in FIG. 2 is configured. .

Next, FIG. 1 shows part of the operation of the first embodiment.

This will be explained using FIGS. 2 and 3.

When the noise electrical signal is input from the microphone 1, the data measurement circuit 31 reads the amplitude level of the noise electrical signal at the rising edge or falling edge of the clock input from the control unit 2, and converts the data into A-D. It is output to the converter 32. The A-D converter 32 converts the analog data input from the data measuring circuit 32 into digital values and outputs the digital values to the control signal generator 4.

FIG. 4 is a block diagram showing a second embodiment of the present invention.

In FIG. 4, the same numbers are assigned to the same components as in the first embodiment shown in FIG.
The illustrated embodiment includes a microphone 1 and a noise level measuring section 3.
A power supply control unit 12 is installed to control the power supply to be turned on and off at predetermined intervals.

Next, the operation of the second embodiment will be explained using FIG. 4.

In response to a control signal from the control unit 2, the power supply control unit 12 turns on the power to the microphone 1 and the noise level measurement unit 3 for a certain period T. Microphone 1 and noise level measuring section 3
measures the noise during a certain period T when the power is on. After a certain period T, the microphone 1 and the noise level measuring section 3 are turned off, and then a control signal is input from the control section 2, and the off state continues.

The subsequent operations when the microphone 1 and the noise level measuring section 3 are powered on are the same as in the first embodiment.

〔Effect of the invention〕

As explained above, the present invention has a measuring means for measuring the ambient noise level and automatically adjusts the ringer volume to match the ambient noise level, thereby making it possible to receive a call when the external noise is loud. When you are unconscious and the outside noise is low,
This has the effect of preventing you from causing trouble to people around you.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention;
The figure is a block diagram showing an example of the configuration of the noise level measuring section shown in FIG. 1, FIG. 3 is a time chart of noise level measurement when the noise level measuring section shown in FIG. 2 is configured, and FIG. 4 is a block diagram showing a second embodiment of the present invention, and FIG. 5 is a block diagram showing an example of a conventional portable radio device. DESCRIPTION OF SYMBOLS 1... Microphone, 2... Control part, 3... Noise level measurement part, 31... Data measurement circuit, 32...
A-D conversion section, 4... Control signal generation section, 5... Ringing tone generation section, 6... Ringing volume adjustment section, 7... Speaker, 8... Ringing tone generation section, 9.・・External switch, 10
...Ring volume adjustment section, 11...Speaker, 12...
・Power control unit.

Claims (1)

[Claims] 1. A control unit that sends out a control signal at predetermined intervals during a standby state, and a control unit that measures the level of a signal received from a microphone when the control signal is input, and digitalizes the measured level. A level measurement section that converts into a value and sends it out,
a control signal generator that receives the digital values, calculates an average value of the digital values within a preset period, and generates a ring volume control signal that changes the ring volume from this average value; and a ringer that generates a ring tone. A portable wireless device comprising: a sound generating section; and a ringing volume adjusting section that changes the level of the ringing tone from the ringing tone generating section and amplifies the sound through a speaker in response to input of the ringing volume control signal. 2. The portable radio according to claim 1, further comprising a power control section that turns on power supply to the level measuring section and the microphone only for a preset period of time in response to input of the control signal from the control section. Machine.