JP3365943B2 - Operation sound generator for electrical equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation sound generating device for an electric device, and more particularly to an operation sound generating device for an electric device which can reliably notify a user of an operation by sound.

[0002]

2. Description of the Related Art For example, in a communication device such as a transceiver, a user may erroneously press a power key while holding it to turn on the power and drain the battery. Further, when the communication device can select and operate any one CH from a plurality of CHs, the CH switching key may be erroneously pressed to disable communication with the other party. In order to prevent these erroneous operations, when a power key is operated to turn on the power, a beep sound as a power-on operation sound is generated for a certain period of time to notify the user that the power is turned on. Similarly, when the operating CH is changed in response to the operation of the CH switching key, a beep sound as a CH switching operation sound is generated for a certain period of time to notify the user that the operating CH has changed.

FIG. 8 is a block diagram of a conventional FM transceiver having an operation sound generating function. Reference numeral 10 is a microphone, 11 is a microphone amplifier that amplifies a microphone input, 12 is an HPF that extracts a component of 300 Hz or more out of the microphone input, 13 is an IDC circuit (instantaneous deviation control circuit) for suppressing the maximum frequency deviation below a certain value. ), 14 is 3 kHz of the output of the IDC circuit
It is an LPF (splatter filter) that extracts the following components and creates a transmission baseband signal. Reference numeral 20 denotes a transmission / reception circuit, which FM-modulates the transmission baseband signal output from the LPF 14 to generate an FM-modulated wave having a transmission frequency of a desired operation CH when the transmission mode is switched to a transmission mode by a system controller described later. After power amplification,
It is fired from the antenna 21 for both transmission and reception. On the contrary, when the reception mode is switched to, after the RF amplification of the received signal received from the outside by the transmitting / receiving antenna 21,
The reception signal of the desired operation CH is taken out, converted into an intermediate frequency signal, and output. The system controller controls switching of the operating CH for the transmission / reception circuit 20 based on a user instruction.

Reference numeral 30 denotes I for amplifying an intermediate frequency signal of a desired operation CH output from the transmission / reception circuit 20 in the reception mode.
F amplifier circuit, 31 is FM for the output of the IF amplifier circuit 30.
An FM detection circuit that performs detection, 32 is a BPF that extracts an audio signal component of 300 Hz to 3 kHz from the output of the FM detection circuit 31, and 33 is an audio signal and is output when the user turns the power on (powers off) from the system controller. A summing amplifier for adding and amplifying a beep sound signal as a power-on operation sound signal (power-off operation sound signal) or a beep sound signal as a CH switching operation sound signal output when a CH switching operation is performed, and 34 is a summing amplifier. This is an audio power amplifier that amplifies the output of the amplifier by power, and here is a differential amplification type power amplifier PA-
It is configured using an IC (a resistor that determines the power amplification gain is built in the IC). Reference numeral 35 is a speaker for acoustic conversion, which is connected to the output side of the audio power amplifier 34 via a DC cut capacitor C1.

In the audio power amplifier 34, the output of the summing amplifier 33 is a differential amplification type power amplifier PA-
It is input to the non-inverting input terminal (+) of the IC, and the differential amplification type power amplifier PA-IC non-invertingly amplifies and outputs it.
Differential amplifier type power amplifier PA-IC inverting input terminal (-)
A capacitor C2 is connected between the ground and the ground, and the inverting input terminal (-) is grounded in an alternating current so that a predetermined power amplification gain can be obtained. Differential amplification type power amplifier P
When the power of the A-IC is turned on and normal amplification operation is possible, a certain DC potential appears at the inverting input terminal (-), but the capacitor C2 is placed between the inverting input terminal (-) and ground.
Is provided, it is possible to prevent the inverting input terminal (−) from being grounded in a DC manner.

Reference numeral 36 is a noise level detection circuit,
For example, 30 kHz to 80 kHz in the output of the detection circuit 31
The noise level is detected by extracting the noise component in the band and performing DC detection. Then, the noise level detection signal (DC voltage) NL is output to the system controller.
40 is a power supply circuit that selectively supplies power + B from a battery (not shown) to each unit under the control of the system controller, 41 is a key input unit, a power key 42 for turning on / off the power, and an operation CH. It has an up key 43 and a down key 44 for performing variable operations. The power key 42, the up key 43, and the down key 44 output a key signal that becomes L level while the key is pressed and becomes H level when the key is released. 45 is a PTT. SW, which outputs a switch signal that is at L level while being pressed and at H level when being released. Reference numeral 46 is a display unit for displaying the operating CH and the like.

Reference numeral 50 denotes a system controller having a microcomputer configuration which controls the FM transceiver as a whole, and performs key operation on the key operation unit 41 and PTT. Power ON / OFF control for the power supply circuit 40 is performed according to the operation of the SW 45, reception mode and transmission mode switching control for the transmission / reception circuit 20, operation CH switching control, operation CH display control. Or perform noise squelch control according to the magnitude of the noise level indicated by the noise level detection signal NL in the reception mode. Further, at the time of power on / off operation and operation CH switching operation, the power supply circuit 40 is temporarily controlled to power on the audio power amplifier 34, and a beep signal is generated and output to the summing amplifier 33. Then, the operation sound is generated.

The operation of the system controller 50 will be specifically described with reference to FIGS. 9 to 13. It is assumed that the built-in memory (rewritable non-volatile memory) of the system controller 50 previously stores the operation CH data = 5 immediately before power-off. (1) Power-on In the power-off state, when the user presses the power key 42 to perform a power-on operation, the power key signal falls from H to L. In response to the fall of the power key signal, the system controller 50 starts a first timer that measures 500 ms, which is a reference time for determining whether the operation is valid or invalid (steps S1 and S2 in FIG. 9), and the power key It is checked which of the signal rise and the time up is faster (steps S3 and S4). If the power key signal rises earlier, it is determined that the power key 42 is pressed by mistake and the power-on operation is invalid. The process returns to the first step without performing power-on control (YES in step S4). If the user keeps pressing for 500 ms or more and the time is up first (YES in step S3),
The system controller 50 determines that a valid power-on operation has been performed. At this time, the power supply circuit 40 is controlled to turn on the power to the audio power amplifier 34 so that the power is supplied and brought into an operating state (step S5).

Then, a beep sound signal as a power-on operation sound signal is generated for a certain period of time and output to the summing amplifier 32 (step S6). The beep sound signal is power-amplified by the audio power amplifier 34 and then output to the speaker 35 for acoustic conversion. User beeps to FM
When it is known that the transceiver power is turned on, and if the power is turned on by mistake, the power can be turned off immediately to prevent battery drain. After that, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34, and the power is once turned off to prevent battery consumption (step S7).

After that, the power supply circuit 40 is supplied with each circuit (display section 46, FM detection circuit 31,
Power-on control for the noise level detection circuit 36, the summing amplifier 33, and the transmission / reception circuit 20 that requires power supply for both transmission and reception, and circuits that require power supply only during reception (IF amplification circuit 30, transmission / reception) In the circuit 20, power-on control is performed on a circuit that requires power supply only during reception) to supply power to each circuit (step S8). Then, the transmission / reception circuit 20 is controlled to switch to the reception mode, the control to switch to the operating CH = 5 immediately before the last power-off, the display of the operating CH to the display unit 46, and waits for reception from the other party (step S9). .

For example, an operable C of an FM transceiver
Assuming that there are 10 Hs, the noise level detection signal NL output from the noise level detection circuit 36 has a large voltage value when there is no transmission from the other party on the 5th CH, indicating that the noise level is large. When there is a transmission on the 5th CH from the other party, the reception signal caught by the transmission / reception antenna 21 is subjected to RF amplification and conversion into an intermediate frequency signal in the reception system of the transmission / reception circuit 20. The intermediate frequency signal of the reception signal of the 5th CH is amplified by the IF amplification circuit 30, and then the FM detection circuit 31.
FM detection is performed at. When the other party is near and the reception electric field strength of the 5th CH is not weak, the noise level in the output of the FM detection circuit 31 is small and the noise level detection signal NL has a small voltage value. However, if the other party is far away and the reception electric field strength of the 5th CH is weak, the noise level in the output of the FM detection circuit 31 is large, and the noise level detection signal NL has a large voltage value.

In the reception mode, the system controller 50 sends the noise level detection signal NL to a predetermined threshold voltage V
_When the noise level detection signal NL is higher than the threshold voltage V _TH because the receiving electric field strength is weak because the other side is not transmitting on CH5 or is transmitting even if it is transmitting compared to _TH , the audio power amplifier The power of 34 is kept off to prevent the noise sound from being emitted from the speaker 35, and the consumption of the battery is prevented (step S20 of FIG. 10,
S21). If the other side is transmitting on channel 5 and the received electric field strength is above a certain level and the noise level detection signal NL is below the threshold voltage V _TH , the power of the audio power amplifier 34 is turned on. , The received voice is output from the speaker 35 (step S22).

(2) The transmitting user transmits the PTT. When the SW 45 is pressed, an L level switch signal is output, and the system controller 50 that has input the signal determines that there is a transmission instruction operation (YES in step S23), and the power supply circuit 40 is powered on only when receiving power. The power is controlled to be turned off to the necessary circuits (the circuits that need power only in the reception among the IF amplifier circuit 30 and the transmission / reception circuit 20) to turn off the power supply to the circuits, and the power is required only in the transmission. The circuit (in the microphone amplifier 11, the IDC 13, the transmission / reception circuit 20,
The power-on control is performed to the circuit requiring the power supply only at the time of transmission to supply the power to the circuit. Further, the power supply to the audio power amplifier 34 is turned off to prevent battery consumption. Further, the transmission / reception circuit 20 is controlled to switch to the transmission mode (step S40 in FIG. 11). Microphone 10
The audio signal input at is the microphone amplifier 11 and HPF1.
2, 300 Hz through the IDC circuit 13 and the LPF 14
It becomes a transmission baseband signal in the band of 3000 Hz, is FM-modulated and power-amplified by the transmission / reception circuit 20,
It is emitted from the transmission / reception antenna 21 to the outside at the transmission frequency of CH.

PTT. When the SW 45 is released, the switch signal rises to the H level, the system controller 50 determines that the transmission instruction operation is completed, and controls the power supply circuit 40 to turn on the power to the circuit that needs power only at the time of reception. Power is supplied to the circuit, the power supply to the circuit that requires power supply only at the time of transmission is controlled to be turned off, the power supply to the circuit is turned off, and the transmission / reception circuit 20 is controlled to switch to the reception mode (step. YES in S41, S4
2).

(3) Switching of Operation CH For example, when it is desired to change the operation CH to the sixth CH, the CH switching operation is performed twice by pressing the up key 43 of the key operation unit 41 twice in the reception mode. . When the up key signal falls from H to L by the first press of the up key 43, the system controller 50 starts the second timer that measures 100 ms, which is the reference time for determining whether the operation is valid or invalid ( Step S2 of FIG.
4, S25), it is checked which of the rising edge of the up key signal and the time up is earlier (steps S26, S25).
27) If the rising edge of the up key signal is earlier, the up key 43 is simply pressed by mistake, and it is determined that the operation is an invalid CH switching operation, and the operation CH switching control is not performed. The process proceeds (YES in step S27).

If the user keeps pressing for 100 ms or more and the time is up first (YE in step S26)
S), the system controller 50 determines that a valid operation CH switching operation has been performed. At this time, the power supply circuit 40 is controlled to turn on the power to the audio power amplifier 34 to supply the power and bring it into the operating state (step S28). Next, a beep sound signal as a CH variable operation sound signal is generated for a certain period of time and output to the summing amplifier 32 (step S29). This beep signal is power-amplified by the audio power amplifier 34 and then amplified by the speaker 35.
Is output to and converted into sound. If the user recognizes from the beep sound that some operation has been performed, and if he is erroneously performing the CH variable operation, the user immediately returns the operation so that communication with the other party is not disabled. Thereafter, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34, and the power is turned off once to prevent the battery from being consumed (step S30).

After that, the operating CH data is incremented to 6 and the operating CH is sent to the transmitting / receiving circuit 20 as the sixth channel.
Control to switch to H, and operation C after changing to display unit 46
H is displayed (step S31). Similarly, when the up key signal falls from H to L again by the second press of the up key 43, if the user continues to press for 100 ms or more, a beep sound is emitted for a certain period of time, and the operation CH
The data is incremented to 7 and the transmitting / receiving circuit 20 is controlled to switch the operating CH to the 7th CH.

On the contrary, when it is desired to change the operation CH to the sixth CH, the down key 44 of the key operation unit 41 in the reception mode.
Press once to perform CH switching operation. When the down key signal falls from H to L by pressing the down key 44, the system controller 50 starts a second timer that measures 100 ms (step S5 in FIG. 12).
0, S51), and checks whether the down key signal rises or times up earlier (steps S52, S51).
53) If the rising edge of the down key signal is earlier, the down key is simply pressed by mistake, and the operation proceeds to step S70 of FIG. 13 without controlling the switching of the operating CH because it is an invalid CH switching operation. (Step S
Yes at 53).

If the user keeps pressing for 100 ms or more and the time is up first (YES in step S52)
S), the system controller 50 determines that a valid CH switching operation has been performed. At this time, the power supply circuit 4
0, the audio power amplifier 34 is turned on to supply power, and the audio power amplifier 34 is put into operation (step S
54). Next, a beep sound signal as a CH variable operation sound signal is generated for a certain period of time and output to the summing amplifier 32 (step S55). The beep sound signal is power-amplified by the audio power amplifier 34 and then output to the speaker 35 for acoustic conversion. If the user recognizes from the beep sound that some operation has been performed, and if he is erroneously performing the CH variable operation, the user immediately returns the operation so that communication with the other party is not disabled. Thereafter, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34, and the power is once turned off to prevent battery consumption (step S56).

Thereafter, the operation CH data is decremented to 6 and the operation CH is transmitted to the transmission / reception circuit 20 as the sixth CH.
Control to switch to H. In addition, the operation C is displayed on the display unit 46.
H is displayed (step S57).

(4) Power off When the power is to be turned off, the power key 42 is pressed to perform the power off operation. When the user presses the power key 42 in the power-on state, the power key signal falls from H to L. The system controller 50 starts the first timer which measures 500 ms in response to the fall of the power key signal (steps S70 and S7 in FIG. 13).
1) Check whether the power key signal rises or times up faster (steps S72 and S73). If the power key signal rises earlier, the power key 42 is simply pressed by mistake, and the invalid operation is performed. 10 and returns to step S20 in FIG. 10 (YES in step S73).
S). If the user keeps pressing for 500 ms or more and the time is up first (YES in step S72), the system controller 50 determines that a valid power-off operation has been performed.

At this time, the power supply circuit 40 is controlled to turn on the power to the audio power amplifier 34 so that the power is supplied and brought into an operating state (step S74). Then, a beep sound signal as a power-off operation sound signal is generated for a certain period of time and output to the summing amplifier 32 (step S).
75). This beep signal is the audio power amplifier 3
The power is amplified in 4 and then output to the speaker 35 for acoustic conversion. When the user knows from the beep sound that some operation has been performed, and if the user has accidentally performed a power-off operation, he can immediately perform a power-on operation to restore the communicable state. Thereafter, the power supply control circuit 40 is controlled to turn off the power supply of all supply systems to turn off the power supply (step S76).

[0023]

By the way, the above-mentioned F
In the M transceiver, the audio power amplifier 34
When the power source is ON and is in a normal operation state, the capacitor C2 is connected to the predetermined DC potential (this is referred to as E) which appears at the inverting input terminal (-) of the differential amplifier PA-IC. Although it is in a completely charged state, when the power supply to the audio power amplifier 34 is turned off, the charging voltage V _C2 of the capacitor C2 gradually decreases due to discharging,
Eventually, it drops to the ground potential (see FIG. 14 (1)).

Therefore, after the power supply to the audio power amplifier 34 is turned off, the system controller 50 supplies the power to the audio power amplifier 34 and generates a beep sound signal when a key is pressed after a while. At this time, the capacitor C2 has an inverting input terminal (-).
It is charged by the current from the
_C2 is much lower than E, and the potential of the inverting input terminal (-) is also E
Much lower. At this time, the differential amplifier PA-IC cannot perform a normal amplification operation and cannot amplify and output even if a beep sound signal is input. Therefore, the beep sound is cut off (see FIG. 14 (2)).
In this case, there is a problem that the user does not notice that he or she accidentally performed some operation and leaves the FM transceiver in an undesired operating state.

The present invention has been made in view of the above-mentioned problems of the prior art.
It is an object of the present invention to provide an operation sound generation device for an electric device that can reliably notify the user that an operation has been performed.

[0026]

In the operation sound generating apparatus for electric equipment according to claim 1 of the present invention, the power amplifying means (34) for amplifying the audio signal and the output of the power amplifying means (34) are acoustically transmitted. A sound converting means (35) for converting, an operating means (41) for performing a predetermined operation on an electric device, and when a certain operation is performed by the operating means (41), a control operation according to the operation is performed and a power source is supplied. Control means (50A) for controlling the supply means (40) to temporarily supply power to the power amplification means (34) and for generating an operation sound signal to input to the power amplification means (34) . The control means (50
A) is an operation means (41) for which a certain operation is performed within a predetermined reference time.
Treated as a valid operation when continuously performed and prescribed
If the operation is canceled before the reference time of
In the operation sound generating device for an electric device to be handled , the control means (50A), when a certain operation is performed by the operation means (41), the power amplification means before a predetermined reference time elapses.
The power supply ON control to the
The operation is canceled before the predetermined reference time has elapsed after the operation.
If the power supply is turned off, the power supply to the power amplification means is controlled to be turned off.
Whether the certain operation is continuously performed for a predetermined reference time or longer,
From the power supply ON control to the power amplification means,
The operation sound signal should be generated after a lapse of time.
And, is characterized.

Thus, the power amplifying means (34) is embodied by using the differential amplifier (PA-IC), and the operation sound signal is input to one input terminal (+) of the differential amplifier (PA-IC). It is the other input terminal (-) and also have a configuration in which a capacitor (C2) is connected between ground, operating the hand
When a certain operation is performed for a predetermined reference time or more on the stage (41)
If a certain operation is performed, the specified
The power amplification means (34) is supplied with power before the reference time of
Since the source is supplied, some operation is performed and a predetermined reference time
The delay before the operation sound is heard after the
You can prevent the feeling of harmony. In addition, in claim 1
Operation sound is generated for all operations on electrical equipment.
May be allowed, but some one or more specific operations
You may make it generate only when it is hit.

[0028]

[0029]

According to a third aspect of the present invention, there is provided an operation sound generating apparatus for electric equipment, in which power amplification means (3) for amplifying a voice signal is used.
4), an acoustic converting means (35) for acoustically converting the output of the power amplifying means (34), an operating means (41) for performing a power-on operation, and a power supply means (4) according to the power-on operation.
0) and control means (50A) for inputting the generated operation sound signal at power-on operation along with the control to the performing ON control of the power supply to each unit power amplifying means (34), comprising a control means The power source (50A) is turned on by the operating means (41).
Yes, when the operation is continued for more than the specified reference time.
Treated as an effective power-on operation, and before the prescribed reference time
A control means (50A) in an operation sound generating device for an electric device, which is treated as an invalid operation when stopped.
When the power is turned on by the operating means (41),
Supplying power to the power amplification means before the fixed reference time has elapsed
If the power-on operation is
When the operation is stopped before the predetermined reference time has elapsed
Controls to turn off the power supply to the power amplification means (34).
The power-on operation is continuously performed for a predetermined reference time or longer,
Also, from the power supply ON control to the power amplification means (34)
Generate an operation sound signal after a lapse of a certain fixed time
It is characterized by

Thus, the power amplifying means (34) is embodied by using the differential amplifier (PA-IC), and the operation sound signal is input to one input terminal (+) of the differential amplifier (PA-IC). It is the other input terminal (-) and also have a configuration in which a capacitor (C2) is connected between ground, operating the hand
At step (41), the power-on operation is performed for a predetermined reference time or longer.
If the power is turned on when the power is turned on,
The power amplification means (3
Since power is supplied to 4), the power is turned on.
Delay until the operation sound is heard after the fixed reference time has elapsed
You can make it smaller so that you don't feel uncomfortable.

[0032]

[0033]

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to FIG.
One embodiment will be described. FIG. 1 is a block diagram showing the configuration of an FM transceiver with an operation sound generating function according to the present invention, and the same components as those in FIG. 8 are designated by the same reference numerals. Reference numeral 50A denotes a system controller having a microcomputer configuration that controls the entire FM transceiver, and performs key operation on the key operation unit 41 and PTT. The power ON / OFF control for the power supply circuit 40 is performed according to the operation of the SW 45, the reception mode and transmission mode switching control for the transmission / reception circuit 20, the operation CH switching control, and the noise level detection signal NL. The noise squelch control is performed according to the magnitude of the noise level indicated by.

Further, the system controller 50A, during the power ON / OFF operation and the operation CH switching operation,
Audio power amplifier 34 for power supply circuit 40
And a beep sound signal is generated and output to the summing amplifier 33 to generate an operation sound. However, before the generation of the beep sound signal, the power of the audio power amplifier 34 is turned on, and after the normal amplification operation is possible, the beep sound signal is input so that the beep sound is not truncated. There is. The other components are configured exactly as in FIG.

The operation of the system controller 50A will be described in detail with reference to FIGS. 2 to 6 are flowcharts showing the operation of the system controller 50A,
FIG. 7 is a waveform diagram for explaining the operation sound generation operation.
It is assumed that the internal memory (rewritable non-volatile memory) of the system controller 50A stores the operation CH data = 5 immediately before the power-off last time. Further, the charging voltage V _C2 of the capacitor C2 of the audio power amplifier 34 is 0 V, and the audio power amplifier 3
Even when the power supply of No. 4 is turned on, it is assumed that E is sufficiently reached within 200 ms.

(1) Power-on In the power-off state, when the user presses the power key 42 to turn on the power, the power key signal falls from H to L. The system controller 50A measures the time of 300 ms in response to the fall of the power key signal.
Start the timer (steps S101 and S1 in FIG. 2)
02), it is checked which of the power supply key signal rising and the time up is earlier (steps S103 and S10).
4) If the power key signal rises earlier, it is determined that the power key 42 has been pressed by mistake and the power-on operation is invalid, and the process returns to the first step without performing power-on control (at step S104). Yes). If the user continues to press the button for 300 ms or more and the time is up first (YES in step S103), the system controller 50A controls the power supply circuit 40 to turn on the power to the audio power amplifier 34, and outputs the beep sound signal. Power is supplied prior to generation (step S105).
The capacitor C2 of the audio power amplifier 34 rises toward E (see FIG. 7 (1)).

Then, the second timer for measuring the time of 200 ms is started (step S106), and it is checked which of the rising edge of the power key signal and the time up is earlier (steps S107 and S108), and the rising edge of the power key signal is checked. If it is earlier, the power supply circuit 40 controls the power supply circuit 40 to turn off the power to the audio power amplifier 34 because it is an invalid power-on operation simply by operating the power key 42 by mistake, and the process returns to the first step S101 (step S101).
If YES, S109). If the user continues to operate the power key 42 for a period of 500 ms or more, which is the reference time for determining whether the operation is valid or invalid, and the second timer times out first (YES in step S107),
The system controller 50A determines that a valid power-on operation has been performed, generates a beep sound signal as a power-on operation sound signal for a certain period of time, and outputs it to the summing amplifier 32 (step S110).

At this time, a beep sound signal is generated 200 m
Since the power of the audio power amplifier 34 has been turned on before s, when the beep sound signal is input to the audio power amplifier 34, the charging voltage V _{C2 of the} capacitor _C2
Has reached E and the differential amplification type power amplifier PA-IC is capable of normal power amplification operation, and the beep signal is amplified in power by the audio power amplifier 34 without interruption from the head portion, and then the beep sound signal is output to the speaker 35. It is output and acoustically converted (see FIG. 7 (1)). As a result, the user can be sure that the FM transceiver is powered on from the beep sound that does not cause a head cut, and if the user accidentally performs the power on operation, immediately turn off the power and operate the battery. It can prevent consumption. After that, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34, and the power is once turned off (step S111).

After that, in each of the circuits (the display section 46, the FM detection circuit 31, the noise level detection circuit 36, the summing amplifier 33, and the transmission / reception circuit 20) that require constant power supply to the power supply circuit 40, either transmission or reception is possible. Power-on control for circuits requiring power supply) and power-on control for circuits requiring power only during reception (of the IF amplifier circuit 30 and the transceiver circuit 20, circuits requiring power only during reception) Then, power is supplied to each circuit (step S112). Then, the transmission / reception circuit 20 is controlled to switch to the reception mode, the control to switch to the operation CH = 5 immediately before the last power-off, and the display control of the operation CH to the display unit 46 are waited for (step S113). .

For example, an operable C of the FM transceiver
Assuming that there are 10 Hs, the noise level detection signal NL output from the noise level detection circuit 36 has a large voltage value when there is no transmission from the other party on the 5th CH, indicating that the noise level is large. When there is a transmission on the 5th CH from the other party, the reception signal caught by the transmission / reception antenna 21 is subjected to RF amplification and conversion into an intermediate frequency signal in the reception system of the transmission / reception circuit 20. The intermediate frequency signal of the reception signal of the 5th CH is amplified by the IF amplification circuit 30, and then the FM detection circuit 31.
FM detection is performed at. When the other party is near and the reception electric field strength of the 5th CH is not weak, the noise level in the output of the FM detection circuit 31 is small and the noise level detection signal NL has a small voltage value. However, if the other party is far away and the reception electric field strength of the 5th CH is weak, the noise level in the output of the FM detection circuit 31 is large, and the noise level detection signal NL has a large voltage value.

In the reception mode, the system controller 50A outputs the noise level detection signal NL to a predetermined threshold voltage V
_When the noise level detection signal NL is higher than the threshold voltage V _TH because the receiving electric field strength is weak because the other side is not transmitting on CH5 or is transmitting even if it is transmitting compared to _TH , the audio power amplifier The power of 34 is kept off so that no noise sound is produced from the speaker 35 (steps S120 and S121 in FIG. 3). However, if the other side is transmitting on the 5th CH, the received electric field strength is above a certain level, and the noise level detection signal NL is the threshold voltage V _TH.
When it is less than, the power of the audio power amplifier 34 is turned on, and the received voice is output from the speaker 35 (step S122).

(2) The PTT. When the SW 45 is pressed, an L level switch signal is output, and the system controller 50A that has input the signal determines that there is a transmission instruction operation (YES in step S123), and the power supply circuit 40 is turned on only when receiving power. Required circuit (I
In the F amplification circuit 30 and the transmission / reception circuit 20, the power supply to these circuits is turned off by controlling the power supply to the circuits that require power supply only during reception, and the circuits that require power supply only during transmission (microphone). In the amplifier 11, the IDC 13, and the transmission / reception circuit 20, the power supply is controlled to a circuit that requires power supply only during transmission to supply the power to the circuit, and the power supply to the audio power amplifier 34 is turned off. Further, the transmission / reception circuit 20 is controlled to switch to the transmission mode (step S140 in FIG. 4.) The voice signal input by the microphone 10 passes through the microphone amplifier 11, the HPF 12, the IDC circuit 13, and the LPF 14 and is from 300 Hz to 3000 Hz.
The transmission baseband signal in the band
After being FM-modulated and power-amplified by, the signal is transmitted from the transmission / reception antenna 21 to the outside at the transmission frequency of the 5th CH.

PTT. When SW45 is released, the switch signal rises to the H level and the system controller 50A
Judges that the transmission instructing operation is completed, controls the power supply circuit 40 to turn on the power to the circuit that needs the power supply only at the time of reception to supply the power to the circuit, and to the circuit that needs the power supply only at the time of transmission. Power off control to turn off the power supply to the circuit, and control the transmission / reception circuit 20 to switch to the reception mode (YES in step S141, S
142).

(3) Switching of Operation CH For example, when it is desired to change the operation CH to the 7th CH, the up key 43 of the key operation unit 41 is pressed twice in the reception mode, and the CH switching operation is performed twice. When the up key signal falls from H to L by the first operation of the up key 43, the system controller 50A first controls the power supply circuit 40 to turn on the power to the audio power amplifier 34 to generate a beep sound signal. Power is supplied prior to (steps S124 and S125 in FIG. 3). The charging voltage V _C2 of the capacitor C2 of the audio power amplifier 34 is E
(See Fig. 7 (2)).

Then, a third timer for measuring 100 ms, which is a reference time for determining whether the operation is valid or invalid, and 20
The second timer that measures 0 ms is started (step S126), and it is checked which of the rising edge of the up key signal and the time up of the third timer is earlier (steps S127 and S128). If it is early, it is considered that the operation is an invalid CH switching operation only by operating the up key 43 by mistake, and the operation CH switching control is not performed, but the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34 (step S
129), and proceeds to step S150 in FIG.

If the user continues to operate for 100 ms or more and the third timer times out first (step S
(YES in 127), the system controller 50A determines that a valid CH switching operation has been performed. At this time,
Further, it waits for the second timer to time out (step S130). Then, when the second timer times out, a beep sound signal as a CH variable operation sound signal is generated for a certain period of time and output to the summing amplifier 33 (step S).
131).

Since the power of the audio power amplifier 34 is turned on from 200 ms before the beep sound signal is generated, when the beep sound signal is input to the audio power amplifier 34, the charging voltage V _C2 of the capacitor _C2 becomes E. After reaching the normal power amplification operation, the beep signal is power-amplified by the audio power amplifier 34 without being interrupted from the head portion and then output to the speaker 35 for acoustic conversion (FIG. 7 (2)). reference). As a result, the user knows that some operation was surely made from the beep sound without the head cut, and when he / she was erroneously performing the CH variable operation, he / she immediately returns it to the original state to make a contact with the other party. Make sure communication is not disabled. After that, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34 to turn off the power once (step S13).
2).

Thereafter, the operating CH data is incremented to 6 and the operating CH is sent to the transmitting / receiving circuit 30 as the sixth channel.
Control to switch to H, and operation C after changing to display unit 46
H is displayed (step S133). Up key 43
Similarly, when the up key signal falls from H to L again by the second operation, if the user keeps pressing it for 100 ms or more, a beep sound is emitted for a certain time and the operation C is performed.
The H data is incremented to 7 and the transmission / reception circuit 30
The operation CH is controlled to the 7th CH.

On the contrary, when it is desired to change the operation CH to the sixth CH, the down key 44 of the key operation unit 41 is set in the reception mode.
Press once to perform CH switching operation once. When the down key signal falls from H to L by the operation of the down key 44, the system controller 50A first controls the power supply circuit 40 to turn on the power to the audio power amplifier 34, and generates the beep sound signal. To supply power (steps S150 and S151 in FIG. 5). Charging voltage V _C2 of the capacitor C2 of the audio power amplifier 34
Rises toward E (see FIG. 7 (2)).

Next, a third timer for counting 100 ms, which is a reference time for determining whether the operation is valid or invalid, and 20
The second timer that measures 0 ms is started (step S152), and it is checked which of the rising edge of the down key signal and the time up of the third timer is faster (steps S153 and S154). If it is early, the operation CH switching control is not performed because it is an invalid CH switching operation because the operation is simply made by pressing the Dunw key 44 by mistake, and the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34. (Step S155), the process proceeds to step S170 in FIG.

If the user continues to press the button for 100 ms or more and the third timer times out first (YES in step S153), the system controller 50A determines that a valid CH switching operation has been performed. At this time, it waits for the second timer to further time out (step S156). Then, when the second timer times out, a beep sound signal as a CH variable operation sound signal is generated for a certain period of time and output to the summing amplifier 33 (step S157).

Since the power supply of the audio power amplifier 34 is turned on from 200 ms before the beep sound signal is generated, when the beep sound signal is input to the audio power amplifier 34, the charging voltage V _C2 of the capacitor _C2 becomes E. After reaching the normal power amplification operation, the beep signal is power-amplified by the audio power amplifier 34 without being interrupted from the head portion and then output to the speaker 35 for acoustic conversion (FIG. 7 (2)). reference). As a result, the user knows that some operation was surely made from the beep sound without the head cut, and when he / she was erroneously performing the CH variable operation, he / she immediately returns it to the original state to make a contact with the other party. Make sure communication is not disabled. Thereafter, the power supply circuit 40 is controlled to turn off the power to the audio power amplifier 34, and the power is turned off once (step S15).
8).

After that, the operating CH data is incremented to 6 and the operating CH is sent to the transmitting / receiving circuit 20 as the sixth channel.
Control to switch to H, and operation C after changing to display unit 46
H is displayed (step S159).

(4) Power OFF To turn off the power, use the power key 4 as a power off operation.
Press 2 once to operate. When the power is on,
When the user operates the power key 42, the power key signal falls from H to L. In response to the fall of the power key signal, the system controller 50A starts the first timer that counts 300 ms (step S17 in FIG. 6).
0, S171), it is checked which of the rising of the power key signal and the time up is earlier (step S172,
S173), if the rise of the power key signal is earlier, it is determined that the power key 43 is inadvertently operated by pressing the power key 43, and the power off operation is not performed. Return (Step S
Yes at 173). When the user keeps pressing for 300 ms or more and time is up first (step S172)
YES), the system controller 50A controls the power supply circuit 40 to turn on the power to the audio power amplifier 34, and supplies the power before the generation of the beep signal (step S174). Audio power amplifier 3
The capacitor C2 of No. 4 rises toward E (see FIG. 7 (1)).

Subsequently, the second timer for measuring the time of 200 ms is started (step S175), and it is checked which of the rising edge of the power key signal and the time up is earlier (steps S176 and S177), and the rising edge of the power key signal is checked. If it is faster, it is determined that the power-off operation is invalid just because the power key 43 is erroneously operated by pressing the power key 43.
The power-off control is performed to No. 4 and the process returns to step 120 of FIG. 3 (YES in step S177, S178). If the user keeps pressing the button for 500 ms or more and the second timer times out first (step S17).
6), the system controller 50A determines that a valid power-off operation has been performed, and generates a beep sound signal as a power-off operation sound signal for a certain period of time to generate the summing amplifier 3
2 (step S179).

Since the power supply of the audio power amplifier 34 is turned on 200 ms before the beep sound signal is generated, when the beep sound signal is input to the audio power amplifier 34, the charging voltage V _C2 of the capacitor _C2 becomes E. After reaching the normal power amplification operation, the beep signal is power-amplified by the audio power amplifier 34 without being interrupted from the head portion and then output to the speaker 35 for acoustic conversion (FIG. 7 (1)). reference). As a result, the user can confirm from the beep sound that the head has not been cut off without fail, and if he or she accidentally performs the power off operation, immediately turn on the power to enable communication. Can be returned. Thereafter, the power supply circuit 40 is controlled to turn off the power supply of all supply systems to turn off the power supply (step S180).

According to this embodiment, the system controller 50A is turned on or off by the operation of pressing the power key 42 of the key operation unit 41,
When an operation CH is up-switched or down-switched by pressing the up key 43 or the down key 44, power supply ON control to the audio power amplifier 34 is performed in advance, and 200 ms after that. A beep sound signal is generated as an operation sound signal.
Therefore, even when the capacitor C2 is connected between the inverting input terminal (−) of the differential amplification type power amplifier PA-IC configuring the audio power amplifier 34 and the ground, various operations are performed. Audio power amplifier 34
The power is supplied to the first, after the charging voltage V _C2 becomes possible normal amplifying operation reaches the E of capacitor C2, it means that the beep sound signal is input to the audio power amplifier 34, a speaker 35 The beeping sound coming out of will not be cut off, the user will always know that some operation has been performed, and will not leave the FM transceiver in an undesired operating state.

Further, the system controller 50A treats a power-on operation or a power-off operation by pressing the power key 42 on the key operation section 41 as an operation effective when it is continuously performed for 500 ms or more, and the power supply to each section of the FM transceiver is treated. ON control or power off control, but 5
When the operation is released before the lapse of 00 ms and the operation is stopped, it is treated as an invalid operation. In this regard,
For example, when the power-on operation by pressing the power key 42 is started, power-on control of the power supply to the audio power amplifier 34 is performed before 500 ms.
If the operation is stopped before 500 ms has passed since the power-on operation was started, the audio power amplifier 3
Power supply to 4 is turned off, but the power on operation is 50
If it is continued for 0 ms or more, a beep sound signal is generated 200 ms after the power supply ON control to the audio power amplifier 34 is performed. Therefore, when the power ON operation is performed, the reference time for determining valid / invalid. Is 500
It is possible to reduce the delay from the lapse of ms until the beep sound is output, and prevent discomfort. The same is true when the power is turned off.

Further, the system controller 50A treats the CH switching control as an effective operation when the CH switching operation by pressing the up key 43 in the key operation section 41 is continuously performed for 100 ms or more, and the CH switching control is performed for 100 ms.
If it is released before the operation and the operation is canceled, it is treated as an invalid operation. In this regard, when the CH switching operation by pressing the up key 43 is started,
At the same time, power supply ON control to the audio power amplifier 34 is performed in advance. Then, when the operation is stopped before 100 ms has elapsed from the start of the CH switching operation, the power supply off control to the audio power amplifier 34 is performed, but if the CH switching operation is continued for 100 ms or more, the audio is switched off. A beep sound signal is generated after 200 ms have elapsed from the power supply ON control to the power amplifier 34. Therefore, when a CH switching operation is performed, a beep sound is emitted after 100 ms, which is the reference time for determining validity / invalidity, has elapsed. You can reduce the delay before you go out so that you don't feel uncomfortable. The same applies when the down key 44 is pressed.

In addition, in the above-described embodiment, FIG.
The first timer started in step S102 of FIG. 6 and step S171 of FIG. 6 may measure a time other than 300 ms such as 200 ms or 400 ms, and step S106 of FIG. 2 and step S175 of FIG.
In the second timer to start, when the charging voltage V _C2 of the capacitor C2 is the power of the audio power amplifier is turned on in a state of zero V, the charging voltage V of the capacitor C2
_{If C2} is sufficient to reach E, a time other than 200 ms, such as 150 ms or 250 ms, may be measured. Further, the third timer started in step S126 of FIG. 3 and step S152 of FIG.
Times other than 100 ms such as ms or 150 ms may be measured, and the second timer started in step S126 of FIG. 3 and step S152 of FIG.
When the charging voltage V _C2 of the capacitor C2 is the power of the audio power amplifier is turned on in a state of zero V, the charging voltage V _C2 of the capacitor C2 as long as sufficient to reach E, such as 150ms or 250ms, 200 ms Times other than the above may be measured.

In the above-described embodiment, the case where the operation sound is emitted when the power on / off operation or the CH switching operation is performed has been described as an example, but other operation keys are provided in the key operation portion. In some cases, the same can be applied when the other key is operated. In addition, the operation sound may be output only for some of the various operations performed on the key operation unit, such as outputting the operation sound only when the power is turned on. Further, the application target of the present invention is not limited to the FM transceiver at all, and can be applied to various electric devices such as a mobile information terminal, an OA device, and a game device.

[0063]

According to the present invention, the power amplifying means is embodied by using a differential amplifier, the operation sound signal is inputted to one input terminal of the differential amplifier, and the operation sound signal is inputted between the other input terminal and the ground. Even if the capacitor is connected to the power supply, when a certain operation is performed, the power is first supplied to the power amplification means, and after a normal amplification operation is possible, an operation sound signal is generated to generate power. Since the input is made to the amplification means, the operation sound emitted from the acoustic conversion means is not cut off, and the user can always know that a certain operation is performed, and the electric device is kept in an inconvenient operating state. There is no need to leave it.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an FM transceiver according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the system controller in FIG.

FIG. 3 is a flowchart showing an operation of the system controller in FIG.

FIG. 4 is a flowchart showing an operation of the system controller in FIG.

5 is a flowchart showing the operation of the system controller in FIG.

FIG. 6 is a flowchart showing the operation of the system controller in FIG.

7 is an explanatory diagram illustrating an operation sound generation operation in the FM transceiver of FIG.

FIG. 8 is a block diagram showing a configuration of a conventional FM transceiver.

9 is a flowchart showing the operation of the system controller in FIG.

10 is a flowchart showing the operation of the system controller in FIG.

11 is a flowchart showing the operation of the system controller in FIG.

FIG. 12 is a flowchart showing the operation of the system controller in FIG.

13 is a flowchart showing the operation of the system controller in FIG.

14 is an explanatory diagram illustrating an operation sound generation operation in the FM transceiver of FIG.

[Explanation of symbols]

10 microphone 20 transmitting / receiving circuit 33 summing amplifier 34 audio power amplifier 35 speaker 40 power supply circuit 41 key input section 42 power key 43 up key 44 down key 50A system controller PA-IC differential amplification type power amplifier C2 capacitor

Claims (2)

(57) [Claims] 1. Power amplification means for amplifying an audio signal,
A sound converting means for converting the output of the power amplifying means into sound, an operating means for performing a predetermined operation on the electric device, and a control operation according to the operation when a certain operation is performed by the operating means, and a power supply means. controlled to a and a control means for inputting generated to the power amplification means an operation sound signal with to temporarily supply power to the power amplifying means, the control hand
The stage is an operating means, and a certain operation is continued for a predetermined reference time or longer.
Treated as a valid operation when performed, and the specified reference time
Treat as an invalid operation if aborted before
In operation sound generating device for an electric apparatus to which the control means, when a certain operation is the operation unit, advance performed prior to the power supply ON control to the power amplifier means before the predetermined reference time has passed When the operation is stopped before a predetermined reference time has elapsed after the certain operation is performed, power supply off control to the power amplification means is performed, and the certain operation is continuously performed for a predetermined reference time or more, Further, the operation sound generation device for an electric device is characterized in that an operation sound signal is generated after a lapse of a predetermined constant time from the power supply ON control to the power amplification means. 2. A power amplification means for amplifying an audio signal,
According to the sound conversion means for converting the output of the power amplification means into sound, the operation means for turning on the power supply, and the power-on operation,
And a control means for input to the power amplifier means with controlling the power supply means performs on-control of the power supply to each portion to generate the operation sound signal at power-on operation, and control the hand
The stage is the operation means and the power-on operation continues for the specified reference time or longer.
When it is done, it is treated as a valid power-on operation, and
If the operation is canceled before the fixed reference time has elapsed, the operation is invalid.
In operation sound generating device for an electric apparatus to which the handle Te, the control means, when the power-on operation is an operation means, prior to the power supply ON control to the power amplifier means before the predetermined reference time has passed If the operation is stopped before the elapse of a predetermined reference time after the power-on operation, the power supply is turned off to the power amplification means and the power-on operation continues for a predetermined reference time or longer. The operation sound generation device for electric equipment is characterized in that the operation sound signal is generated after a predetermined period of time elapses from the power supply ON control to the power amplification means.