JPH11298565A - Radio communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication device where a notice unit notifying arrival of a call through vibration is built in, notice operations of plural kinds including notice of the incoming call are attained and a sufficient notice effect is obtained regardless of dispersion in the resonance frequency. SOLUTION: A vibration signal generating circuit 5 generates a drive signal Dv whose frequency fluctuates within a prescribed range, including a resonance frequency of a notice unit 2 and gives the signal to the notice unit 2. The fluctuation range of the frequency of the drive signal is selected corresponding to the dispersion range of the resonance frequency due to the tolerance of various factors deciding the resonance frequency of the notice unit 2. Moreover, an ON/OFF switch 71 is interposed between the vibration signal generating circuit 5 and the notice unit 2. Applying ON/OFF control to the switch 71 by a control signal generating circuit 72 depending on each operation mode generates different vibration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device such as a portable telephone or a pager, and more particularly to a wireless communication device having a built-in notification device for performing a plurality of types of notification operations including notification of an incoming call.

[0002]

2. Description of the Related Art Conventionally, a portable telephone has a sound generator (ringer) for notifying an incoming call by sound, that is, a vibration having an audible frequency, and a vibration having a sensible vibration, for example, a vibration having a frequency of several hundred Hz or less. And a vibration generating device for notifying an incoming call, which can be used properly depending on the situation. However, in a small device such as a mobile phone, there is almost no space for incorporating both a sound generator and a vibration generator, and there is a problem that the equipment becomes larger due to the provision of both devices.

The applicant has proposed a portable telephone as shown in FIG. 13 (Japanese Patent Application No. 8-161399). The mobile phone has a receiving section (12) for outputting a receiving voice, an operation button (14) such as a numeric keypad, and a transmitting voice on a flat housing (11) on which an antenna (1) is protruded. A notifying unit (2), which includes a transmitting unit (13) to be input and the like, and which can notify an incoming call by both sound and vibration, is mounted at an appropriate position inside the housing (11).

The notification unit (2) is driven at an audible frequency by a first drive signal to generate a sound wave, and is driven at a low frequency of several hundred Hz or less by a second drive signal to generate vibration. And a signal generating circuit for generating the first drive signal and the second drive signal. The first and second vibrators are housed in a common casing, and the first vibrator is configured by attaching a coil to the casing via a first diaphragm, while the second vibrator is mounted on the casing. It is configured by attaching a magnet body via two vibrating plates, and a magnetic gap for accommodating the coil of the first vibrating body is formed in the magnet body.

More specifically, as shown in FIG. 2, a first vibrating body (4) for mainly generating a sound wave is provided in a cylindrical casing (21).
And a second vibrating body (3) that is to mainly generate vibration. The casing (21) has a sound emission port (25) at the front opening of the cylindrical main body (22). A ring-shaped front cover member (24) is attached, and a ring-shaped rear cover member (23) is attached to the back opening of the main body (22), so that the whole structure is compact.

The first vibrating body (4) is a circular first vibrator having a peripheral portion sandwiched between a casing body (22) and a front cover member (24).
It is composed of a diaphragm (41) and a coil (42) fixed to the back of the first diaphragm (41). The first vibrator (4) is
It has an audible resonance frequency exceeding 0 Hz. On the other hand, the second vibrating body (3) includes a ring-shaped second vibrating plate (34) having an outer peripheral portion sandwiched between the casing body (22) and the rear cover member (23), and a second vibrating plate (34). ), A permanent magnet (31) magnetized in the axial direction (vertical direction) and fixed to the front surface of the outer yoke (32), and a permanent magnet (31). An inner yoke (33) fixed to the front
The coil (42) of the first vibrating body (4) is vertically movably accommodated in a ring-shaped magnetic gap formed between the facing surface of the inner yoke (2) and the inner yoke (33). The second vibrator (3) is given by
It has a resonance frequency lower than 00 Hz.

FIG. 15 shows a vibration characteristic Cs of the first vibrating body (4).
And the vibration characteristics Cv of the second vibrating body (3), and peaks occur in amplitude at the resonance frequencies Fs and Fv of the vibrating bodies (4) and (3). Accordingly, by supplying signals having the resonance frequencies Fs and Fv as the sound drive signal and the vibration drive signal to the coil (42) of the notification unit (2), a large notification effect can be obtained.

[0008] That is, when performing notification by sound, FIG.
When a sound drive signal Ds having a frequency (for example, about 2 kHz) matching the resonance frequency Fs is supplied to the coil (42) as shown in FIG. As shown, a frequency (for example, 100
(About Hz) is supplied to the coil (42). The sound drive signal Ds is the coil of the notification unit (2)
When supplied to the coil (42), the coil (4) is applied according to Fleming's left-hand rule, based on the relationship between the magnetic field lines radially penetrating the magnetic gap and the circumferential current flowing through the coil (42).
2) generates an axial driving force. Here, since the driving force acts at the frequency of the resonance point, the first vibrator (4) resonates and generates a sound wave. On the other hand, the second vibrating body (3) hardly vibrates because the resonance point is shifted. By the generation of this sound wave, an incoming call is notified audibly.

On the other hand, when the vibration drive signal Dv 'is supplied to the coil (42) of the notification unit (2),
Although an axial driving force is generated in (42), the first vibrating body (3)
Is shifted from the frequency of the driving force,
The vibrating body (3) hardly vibrates, and the second vibrating body (3) having a resonance point at the frequency of the driving force resonates by receiving the reaction force of the driving force, and generates vibration. The occurrence of the vibration informs the user of the incoming call.

[0010]

In the notification unit (2), the diaphragms (41) and (34) and the yokes (32) and (3)
3) and vibrating body (4) such as shape, dimensions, material, etc. of permanent magnet (31)
It is unavoidable that the resonance frequencies of the vibrators (4) and (3) vary due to the tolerance of the parameters for determining the resonance frequency of (3). For example, the thickness of the second diaphragm (34) constituting the second vibrator (3) has a tolerance of 120 μm ± 8 μm, and the resonance frequency Fv when the plate thickness t is 120 μm is 100 Hz. In some cases, since the resonance frequency Fv is proportional to the 1.5th power of the plate thickness t, the variation of the resonance frequency is 100 Hz ± 10 Hz.

FIG. 16 shows a state in which the vibration characteristic a indicated by a solid line deviates from the vibration characteristics b and c indicated by broken lines due to dimensional tolerances and the like. If the vibrating body having the characteristic b is driven, no resonance occurs, and the amplitude of the vibrating body greatly decreases from the peak value Wp at the resonance point to the value W '. In this way, when the notification unit is driven by a drive signal of a constant frequency ignoring the variation of the resonance frequency,
There has been a problem that the amplitude of the vibrator also varies, and a sufficient notification effect cannot be obtained.

In recent mobile phones, it is possible to set various operation modes such as displaying the telephone number of the caller at the time of an incoming call and operating the phone as a pager. With the diversification of functions, as the notification function of the notification unit, not only notification of incoming calls,
There is a need to notify various operation modes set in the telephone.

Accordingly, an object of the present invention is to provide a radio apparatus equipped with an alarming device capable of performing a plurality of types of alarming operations including notification of an incoming call and obtaining a sufficient alarming effect irrespective of a variation in resonance frequency. To provide a communication device.

[0014]

SUMMARY OF THE INVENTION A radio communication apparatus according to the present invention has a built-in notification device for performing a plurality of types of notification operations including notification of an incoming call. It comprises a vibrator to be driven and a drive signal supply circuit for supplying a drive signal to the vibrator. Here, the drive signal supply circuit receives a notification command signal and generates a notification signal signal that is different for each notification content in accordance with the notification content, and receives the notification command signal and sets the frequency within a certain range including the resonance frequency of the vibrating body. And a driving signal generating means for generating a driving signal in which the frequency fluctuation state is different for each notification command signal and supplying the driving signal to the vibrating body.

In the wireless communication apparatus of the present invention, even if the resonance frequency fluctuates due to the dimensional tolerance of the vibrating body of the alarm device, the frequency of the drive signal repeatedly fluctuates within a certain range. , Resonance occurs at the time when the resonance frequency matches the true resonance frequency, and a large amplitude is obtained. Thereafter, when the frequency of the drive signal deviates from the true resonance frequency, resonance does not occur and the amplitude decreases, but when the drive signal again matches the resonance frequency, the amplitude increases. As described above, with the fluctuation of the frequency of the drive signal, the amplitude of the vibrating body repeatedly increases and decreases with the peak at the time of resonance as the peak.

Also, in response to an incoming call or other device operation, a specific notification command signal for notifying the operation is generated, and based on the notification command signal, the vibrating body is driven in different vibration states. A drive signal is created. For example, at the time of a normal incoming call, a first drive signal in which the fluctuation of the vibration frequency is continuous is generated based on the incoming call notification command signal, while at the time of an incoming call from a specific caller, a caller notification command signal is generated. , A second drive signal intermittently generated at a constant cycle is generated. When the notification device is driven by the first drive signal, resonance occurs at a constant cycle, whereas when the notification device is driven by the second drive signal, the resonance occurs intermittently. . The caller can be identified by the difference in the vibration state.

Further, when the operation mode as the telephone is set, a drive signal having a first cycle of the frequency fluctuation is generated based on the mode notification command signal,
When another operation mode such as a pager function is set, a drive signal having a second cycle of the frequency fluctuation is created based on the mode notification command signal. As a result, in different operation modes, a difference occurs in the state of occurrence of intermittent periodic resonance. The operation mode can be identified by the difference in the vibration state.

In a specific configuration, the variation width of the frequency of the drive signal corresponds to the variation width of the resonance frequency due to the tolerance of various factors that determine the resonance frequency of the vibrating body. Here, the variation width of the resonance frequency due to the tolerance of the specifications can be obtained experimentally, empirically or theoretically, and by corresponding to the variation width, the variation width of the frequency of the drive signal can be rationally determined. You can decide.

For example, the resonance frequency of the vibrating body is lower than the audible band frequency, specifically, a low frequency of several hundred Hz or less, and the vibration of the vibrating body at the resonance frequency has an amplitude that can be felt. doing. Thereby, a sensible notification effect can be obtained. The drive signal has a pulse-like or sine-wave-like alternating waveform, and its frequency fluctuates periodically at one to several hertz. As a result, resonance occurs with a period that is highly effective for the body.

The frequency of the drive signal varies in a triangular wave, a sine wave, or a sawtooth wave. In particular, when the frequency of the drive signal is changed by a sawtooth wave, resonance occurs at a constant period corresponding to the period of the sawtooth wave, and the notification without discomfort is possible. The variation in the frequency of the drive signal is not limited to a continuous one, but may be a stepwise increase or decrease.

[0021]

According to the radio communication apparatus of the present invention, resonance occurs periodically or aperiodically irrespective of the variation in the resonance frequency, and the amplitude of the vibrating body peaks at the resonance. Since the increase / decrease is repeated as above, a large notification effect can be obtained audibly or physically. Further, the content of the notification can be identified by the difference in the vibration state.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a portable telephone shown in FIG. 13 will be specifically described with reference to the drawings. As shown in FIG. 13, the mobile phone according to the present invention has a receiving section (12) with a built-in speaker, an operation button (10-key, etc.) on the surface of a flat housing (11) on which an antenna (1) is protruded. 14), a transmission unit (13) with a built-in microphone, etc., and a notification unit (2) for notifying an incoming call by sound or vibration is attached at an appropriate position inside the housing (11). .

As shown in FIG. 2, the notification unit (2) is provided in a common casing (21) with a first vibrating body to generate mainly sound waves.
(4) and a second vibrating body (3) that mainly generates vibration. The casing (21) has a ring-shaped front cover member (24) having a sound emission opening (25) attached to a front opening of the cylindrical main body (22), and a back opening of the main body (22). A ring-shaped rear cover member (23) is attached.

The first vibrator (4) is a circular first vibrator having a peripheral portion sandwiched between the casing body (22) and the front cover member (24).
It is composed of a diaphragm (41) and a coil (42) fixed to the back of the first diaphragm (41). The first vibrator (4) is
It has an audible resonance frequency exceeding 0 Hz. On the other hand, the second vibrating body (3) includes a ring-shaped second vibrating plate (34) having an outer peripheral portion sandwiched between the casing body (22) and the rear cover member (23), and a second vibrating plate (34). ), A permanent magnet (31) magnetized in the axial direction (vertical direction) and fixed to the front surface of the outer yoke (32), and a permanent magnet (31). An inner yoke (33) fixed to the front
The coil (42) of the first vibrating body (4) is vertically movably accommodated in a ring-shaped magnetic gap formed between the facing surface of the inner yoke (2) and the inner yoke (33). The second vibrating body (3) has a frequency band that is practically inaudible, for example, 50 Hz to 30 Hz.
It has a resonance frequency of 0 Hz. The first and second diaphragms (41) and (34) can be formed of a known elastic material such as metal, rubber, and resin. Also, the second diaphragm (34)
In order to obtain a large amount of displacement, a notch or the like is formed as necessary.

FIG. 1 shows a circuit configuration of a main part of a portable telephone provided with the notification unit (2). By operating the operation button (14), the mobile phone can select a calling method based on either the notification of an incoming call by sound or the notification of an incoming call by vibration. The circuit (55) sets the calling method for the control circuit (54). The notification unit (2) is connected to a sound signal generation circuit (57) and a vibration signal generation circuit (5) via a changeover switch (59). The changeover operation of the changeover switch (59) is controlled by a control circuit (54). ).

Radio waves transmitted from the base station are transmitted through an antenna.
The signal is always received at a fixed period by (1), and the received signal is subjected to frequency conversion and demodulation by a radio circuit (51), and then supplied to a signal processing circuit (52), where the digital audio signal is received. And the control signal is extracted. The operation of the signal processing circuit (52) is controlled by the control circuit (54). The control signal obtained from the signal processing circuit (52) is supplied to the incoming call detection circuit (53), and the presence or absence of a call to the own station is detected. On the other hand, the audio signal obtained from the signal processing circuit (52) is emitted from the speaker via an audio signal processing circuit (not shown).

The sound signal generating circuit (57) generates a sound drive signal Ds having an audible frequency in order to perform sound notification. On the other hand, the vibration signal generation circuit (5) generates a low-frequency vibration drive signal Dv of several hundreds Hz or less in order to perform notification by sensible vibration, and includes a modulation signal generation circuit (56). It comprises a vibration signal processing circuit (58). Specific configurations of the modulation signal generation circuit (56) and the vibration signal processing circuit (58) will be described later. or,
An ON / OFF switch (71) is interposed between the vibration signal generation circuit (5) and the changeover switch (59), and operates the modulation signal generation circuit (56) and the ON / OFF switch (71). It is controlled by a control signal creation circuit (72).

When the incoming call detection circuit (53) detects a call to the own station, the control circuit (54) switches the changeover switch (59) according to the call setting by the operation button (14). When the incoming call is notified only by sound, the changeover switch (59) is switched to the sound signal generation circuit (57), and only the sound drive signal is supplied to the notification unit (2). On the other hand, if you want to notify the incoming call only by vibration,
(59) is switched to the vibration signal generation circuit (5), and only the vibration drive signal is supplied to the notification unit (2).

As shown in FIG. 14A, the sound drive signal Ds generated by the sound signal generation circuit (57) has an audible band of 2 kHz.
A pulse signal having a frequency of z is intermittently formed at a cycle of 16 Hz, and the intermittent pulse generates an audible notification sound of "Plurul ...". The frequency of 2 kHz corresponds to the vibration shown in FIG. It matches the resonance frequency Fv in the characteristic Cs. On the other hand, the vibration drive signal Dv generated by the vibration signal generation circuit (5) is shown in FIG.
As shown in the figure, the frequency is, for example, 100 Hz ± around a frequency of about 100 Hz that the human body easily feels as vibration.
It fluctuates periodically in the range of 10 Hz, and the center frequency 100 Hz matches the resonance frequency Fv in the vibration characteristic Cv shown in FIG.

FIG. 3A shows an example in which the frequency F of the vibration driving signal Dv is changed by a triangular wave.
Is ± ΔF = ± 10 assuming the center frequency Fm = 100 Hz.
Hz, and its fluctuation frequency (1 / Tm) is 1 to
It is set to several Hz. Here, the fluctuation width of the frequency ± Δ
F is determined according to the variation width of the resonance frequency caused by the tolerance of the parameters for determining the resonance frequency of the second vibrating body (3).

In this case, if there is no deviation in the resonance frequency of the second vibrating body (3), the frequency F becomes the center frequency F
Resonance occurs when the value coincides with m, and an amplitude curve Wa varying with the amplitude Wp at the resonance point as a peak is obtained as shown by the solid line in FIG. Further, the resonance frequency of the second vibrating body (3) is shifted due to dimensional tolerance of the diaphragm or the like. For example, even if a true resonance point exists at point P in FIG. At the point of passing the point P, resonance occurs, and an amplitude curve Wb fluctuating with the amplitude Wp at the resonance point as a peak is obtained as shown by a broken line in FIG.

As described above, by varying the frequency of the vibration drive signal Dv within the range of Fm ± ΔF, an amplitude that fluctuates with the amplitude Wp at the resonance point as a peak is always obtained regardless of the variation of the resonance frequency. And a sufficient notification effect can be obtained. Further, the fluctuation of the amplitude further increases the perceived notification effect.

On the other hand, at the constant frequency Fm, the second vibrator
In the case of driving (3), if a deviation occurs in the resonance frequency of the second vibrating body (3), no resonance occurs and the second vibrating body (3)
Has a small value W 'greatly reduced from the peak value Wp at the resonance point, as shown by the two-dot chain line in FIG. 3B. Therefore, a sufficient notification effect cannot be obtained.

The frequency of the vibration drive signal Dv can be changed not only by a triangular wave but also by a sine wave or a sawtooth wave. For example, in the case where the frequency is changed by a sawtooth wave as shown in FIG.
Assuming that there is no deviation in the resonance frequency of (3),
As shown by the solid line in (b), an amplitude curve Wa fluctuating with the amplitude Wp at the resonance point as a peak is obtained. Even if there is a shift in the resonance frequency of the second vibrating body (3), FIG. As shown by a broken line, an amplitude curve Wb fluctuating with the amplitude Wp at the resonance point as a peak is obtained. In particular, in this case, the resonance of the second vibrating body (3) occurs at a constant period, so that notification without discomfort is realized.

The frequency of the vibration drive signal Dv is shown in FIG.
As shown in (1), a method of gradually increasing or decreasing stepwise with a minute frequency width can be adopted. In this case, the same effect can be obtained.

In this embodiment, as shown in FIG. 1, the vibration signal generation circuit (5) is composed of a modulation signal generation circuit (56) and a sound signal generation circuit (57). Here, the modulation signal generation circuit
(56) generates a modulation signal Sm for modulating the frequency of the vibration drive signal, and the modulation signal is a vibration drive signal shown in FIG. 3 (a) or FIG. 5 (a). Is created with the same waveform as the fluctuation waveform of the frequency.

The vibration signal processing circuit (58) can be configured, for example, as shown in FIG. The vibration signal processing circuit (5
8) is connected to an output terminal of a charging unit (6) including a capacitance element C and resistance elements R1 and R2 via a first comparator (61) and a second comparator (62) via an RS-flip-flop circuit (6).
3) and the RS-flip-flop circuit (6)
The output terminal of 3) includes a discharge control transistor (64) and a T-
The flip-flop circuit (65) is connected. First
The above-mentioned modulation signal S is supplied to the inverting input terminal of the comparator (61).
m is input, and the reference voltage signal Vref is input to the non-inverting input terminal of the second comparator (62).

FIG. 10 shows the operation of the vibration signal processing circuit (58). That is, when the charging unit (6) is supplied with power and charged, the voltage signal Vo output from the charging unit (6) gradually increases, and the magnitude of the signal becomes the level of the modulation signal Sm. , The set signal is supplied from the first comparator (61) to the RS-flip-flop circuit (63), and the output So of the RS-flip-flop circuit (63) is turned on. As a result, the transistor (64) is turned on, and the charging section (6) starts discharging. Thereafter, when the voltage signal Vo output from the charging unit (6) drops to the level of the reference voltage signal Vref, the second comparator (62) is turned on, and the second comparator (62) outputs the RS-flip-flop circuit (63). And the output of the RS-flip-flop circuit (63) is turned off.
It becomes F. As a result, the transistor (64) is turned off, and the charging of the charging section (6) is restarted.

In this way, the charging section (6) repeats charging and discharging (FIG. 10 (a)), and the output So of the RS-flip-flop circuit (63) repeats ON / OFF (FIG. 10 (b)). ),
In synchronization with the rise of the output So, the output of the T-flip-flop circuit (65) is switched from ON to OFF and from OFF to ON. As a result, the T-flip-flop circuit (6
From 5), the drive signal Dv that is turned on / off every time the voltage signal Vo reaches the level of the modulation signal So as shown in FIG.
Is obtained. Here, when the modulation signal So fluctuates, for example, with a triangular wave, the period To of the drive signal Dv also fluctuates with a triangular wave.
v is obtained.

The modulation signal generating circuit (56) has a period switching section (7) as shown in FIG.
When the control signal is input to the cycle switching unit (7) from the controller, the modulation signal Sm to be supplied to the vibration signal processing circuit (58) is output.
Is switched.

FIG. 7 shows a specific configuration example of the modulation signal generation circuit (56), and FIGS. 8 (a) and 8 (b) show the modulation signal generation circuit (56).
Of the operation. The modulation signal generation circuit (56) includes first and second comparators (73) and (74), a plurality of parameter selection resistors R1, R2, and R3, a changeover switch S, feedback resistors Rb and Rc, a capacitor C, and the like. A cycle switching unit (7) is constituted by the parameter selection resistors R1, R2, R3 and the changeover switch S. The changeover switch S is switched by a control signal supplied from the control signal generation circuit (72). As a result, the slope (VB / CR) of the output voltage (modulation signal Sm) of the second comparator (74) shown in FIG. 8B changes according to the resistance value R of the parameter selection resistor. The voltage E at the point E in FIG. 7 is changed as shown in FIG.
Every time the voltage rises from (E = Vcc-VB) to (E = Vcc + VB), the output voltage of the second comparator (74) decreases as shown in FIG. become. In this way, the cycle of the modulation signal Sm can be switched to a plurality of types.

The control signal generation circuit (72) is provided with a cycle switching unit in response to a mode notification command signal obtained from the control circuit (54).
A switching control signal for the changeover switch S constituting (7), and an ON / O for the ON / OFF switch (71);
Create an FF control signal.

For example, in the case where telephone numbers of one or more specific callers are registered in advance, when a call is received from an unregistered caller, the incoming call is detected by a call detection circuit.
The control circuit (54) generates a mode notification command signal for instructing that there is such an incoming call, and supplies the mode notification command signal to the control signal generation circuit (72). by this,
The control signal generation circuit (72) controls the period switching unit (7) of the modulation signal generation circuit (56) to generate a sawtooth modulation signal having a constant period T0 as shown in FIG. Let me
An ON / OFF switch (71) is always turned on, and a drive signal whose frequency fluctuates in accordance with the modulation signal is sent to the notification unit
Supply to (2). As a result, resonance occurs in the notification unit (2) in the period T0.

On the other hand, when an incoming call is received from a registered caller, the incoming call is detected by the incoming call detection circuit (53), and the control circuit (54) informs the user that there is such an incoming call. A mode notification command signal to be commanded is created and supplied to the control signal creation circuit (72). This allows the control signal generation circuit (7
2) controls the cycle switching section (7) of the modulation signal generating circuit (56) to generate a sawtooth modulation signal having a constant cycle T0 as shown in FIG. The OFF switch (71) is turned on / off at a constant period T1 as shown in FIG. As a result, an intermittent drive signal that repeats on / off at period T1 as shown in FIG.
It is supplied to (2). As a result, the notification unit (2)
Resonance occurs during the ON period of the drive signal, and the resonance stops during the OFF period, and the vibration state changes. Thereby, it is possible to recognize that there is an incoming call from the registered caller.

When the portable telephone has three operation modes, for example, as a telephone, a pager, and a transceiver, and when the operation mode as the telephone is set, a control signal is issued in response to an incoming call. Creation circuit (7
2) controls the cycle switching section (7) of the modulation signal generating circuit (56) to generate a saw-tooth wave modulation signal having a constant cycle T2 as shown in FIG. The OFF switch (71) is always turned on, and a drive signal whose frequency fluctuates according to the modulation signal is supplied to the notification unit (2).
As a result, resonance occurs in the notification unit (2) in the cycle T2.

On the other hand, when the operation mode as the pager is set, the control signal generation circuit (72) controls the cycle switching section (7) of the modulation signal generation circuit (56), and
As shown in (b), a modulation signal of a sawtooth wave having a constant period T3 is generated, and an ON / OFF switch (71) is always turned on, and a drive signal whose frequency varies according to the modulation signal is generated. Supply to the notification unit (2). As a result,
In the notification unit (2), resonance occurs at a period T3 different from the case of FIG.

When the operation mode of the transceiver is set, the control signal generation circuit (72) controls the cycle switching section (7) of the modulation signal generation circuit (56), and the control signal generation circuit (72) of FIG.
As shown in the figure, a saw-tooth wave modulated signal having a constant period T2 is generated, and the ON / OFF switch (71) is turned on / off at a constant period T4. As a result, a drive signal that repeats on / off at period T4 as shown in FIG.
It is supplied to the notification unit (2). As a result, in the notification unit (2), the resonance occurs during the ON period of the drive signal, and the resonance stops during the OFF period, and the periodic resonance occurs intermittently. Therefore, it is possible to recognize in which operation mode there is an incoming call based on the difference in the vibration state.

It should be noted that ON / O by the control signal generation circuit (72)
The on / off timing of the FF switch (71) is shown in FIG.
As shown in (c) and FIG. 12 (c), it is desirable to synchronize with the rise or fall of the frequency fluctuation of the modulation signal.

As described above, according to the portable telephone of the present invention, resonance occurs periodically or aperiodically regardless of the variation of the resonance frequency, and the amplitude of the vibrating body is reduced by the amplitude at the time of resonance. Since the increase / decrease is repeated as a peak, a large notification effect is obtained audibly or physically. Of course, it is possible to identify the contents of the notification by the difference in the vibration state

The configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims. For example, the present invention provides a notification unit having both functions of a sound generator and a vibration generator as shown in FIG.
The present invention is not limited to (2), and the present invention can be applied to an alarm device having a sound generator and a vibration generator separately. Further, the vibrating body of the notification unit (2) is not limited to the one using the magnetic force as described above, and various known structures can be adopted as long as it uses resonance. For example, a piezoelectric element is used. Those that have done can also be adopted. Also, a vibration signal generation circuit (5)
The ON / OFF switch (71) may be constituted by a microcomputer, and the above-described drive signal may be created by software processing. Further, the content of the notification based on the difference in the vibration state is not limited to the notification of the operation mode at the time of an incoming call, but may include the notification of various functional operations such as a warning of a decrease in battery voltage. Furthermore, FIG.
(a) By combining the on / off and switching of the on / off cycle of the drive signal shown in (c) with the switching of the variation cycle of the drive signal shown in FIGS. Notification is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a circuit configuration of a mobile phone according to the present invention.

FIG. 2 is an enlarged sectional view of a notification unit.

FIG. 3 is a waveform diagram showing a relationship between a frequency of a drive signal and an amplitude of a vibrating body.

FIG. 4 is a waveform diagram of a drive signal.

FIG. 5 is a waveform chart showing a relationship between a frequency of a drive signal and an amplitude of a vibrating body in another embodiment.

FIG. 6 is a waveform diagram showing a change in the frequency of a drive signal in still another embodiment.

FIG. 7 is a diagram illustrating a configuration example of a modulation signal generation circuit.

FIG. 8 is a waveform chart showing an operation of the modulation signal generation circuit.

FIG. 9 is a diagram illustrating a configuration example of a vibration signal processing circuit.

FIG. 10 is a waveform chart showing an operation of the vibration signal processing circuit.

FIG. 11 is a waveform diagram showing two types of modulation signals used for operation mode identification.

FIG. 12 is a waveform diagram showing three types of modulation signals used for operation mode identification.

FIG. 13 is a perspective view illustrating an appearance of a mobile phone to which the present invention is applied.

FIG. 14 is a waveform diagram showing a sound drive signal and a vibration drive signal in a conventional mobile phone.

FIG. 15 is a graph showing vibration characteristics of a vibrating body.

FIG. 16 is a diagram illustrating a decrease in amplitude due to a shift in resonance frequency.

[Explanation of symbols]

 (2) Notification unit (4) First vibrating body (3) Second vibrating body (57) Sound signal creation circuit (5) Vibration signal creation circuit (56) Modulation signal generation circuit (7) Period switching section (58) ) Vibration signal processing circuit (71) ON / OFF switch (72) Control signal generation circuit

[Procedure amendment]

[Submission date] June 25, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (7)

[Claims] A built-in notification device for performing a plurality of types of notification operations including notification of an incoming call, wherein the notification device receives a driving signal and supplies a vibrating body to be resonated and a driving signal to the vibrating body. In the wireless communication device configured to supply the drive signal supply circuit, the drive signal supply circuit includes: a command signal generation unit configured to generate a different notification command signal for each notification content according to the notification content; A drive signal generating means for generating a drive signal in which the frequency fluctuates within a certain range including the resonance frequency of the vibrating body and for which the fluctuation state of the frequency varies for each notification command signal, and supplying the driving signal to the vibrating body. A wireless communication device characterized by the above-mentioned. 2. The wireless signal according to claim 1, wherein the drive signal creating means creates a drive signal in which the frequency variation is continuous according to a notification command signal or intermittent at a specific cycle according to the notification command signal. Communication device. 3. The wireless communication apparatus according to claim 1, wherein the drive signal creating means creates a drive signal in which the change in the frequency has a specific cycle according to a notification command signal. 4. The vibration signal according to claim 1, wherein the variation width of the frequency of the drive signal corresponds to the variation width of the resonance frequency due to a tolerance of specifications for determining the resonance frequency of the vibrating body. The wireless communication device according to claim 1. 5. The resonance frequency of the vibrating body is a low frequency of several hundred Hz or less, and the vibration of the vibrating body at the resonance frequency is:
The wireless communication device according to claim 1, wherein the wireless communication device has an amplitude that can be felt. 6. A command signal generating means for notifying an incoming call notification command signal for notifying an incoming call, a caller notification command signal for identifying a caller, and / or an operation mode of the apparatus. The wireless communication device according to claim 1, wherein the wireless communication device generates a mode notification command signal. 7. The vibrating body of the alarm device includes a casing, a vibrating plate having a fixed end on an inner peripheral wall of the casing, a magnet body attached to a free end of the vibrating plate, and provided to face the magnet body. The wireless communication device according to claim 1, further comprising a coil provided with a drive signal.