JP3845382B2 - Mobile phone speaker mounting system and ringing method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a speaker mounting system for a mobile phone. In particular, the present invention relates to a ringing correction method for correcting a sound pressure level of a ringtone from a speaker as a main sound source disposed on the back surface of a mobile phone.
[0002]
[Prior art]
In the conventional technology, when the ring tone pattern automatic change mode is selected, the ring tone pattern is changed from a chord melody to a single tone melody or from a chord melody to a ringer tone (see, for example, Patent Document 1). .
Furthermore, in the prior art, a vibrator or a speaker is selected as the incoming call notification means (see, for example, Patent Document 2).
[0003]
Further, in the conventional technique, the sounder sound pressure correction circuit changes the sounder sound pressure from the maximum sound volume to the minimum sound volume (see, for example, Patent Document 3).
Furthermore, in the conventional technology, a high-frequency sound including an ultrasonic band is output, and when the user listens to the sound, a brain wave called alpha wave (α wave) appears strongly in the user's brain, and the alpha wave Is generally said to be in a relaxed state (see, for example, Non-Patent Document 1).
[0004]
[Patent Document 1]
JP 2001-308962 (paragraph 0028, FIG. 1)
[Patent Document 2]
Japanese Patent Laid-Open No. 10-341464 (paragraph 0014, FIG. 1)
[Patent Document 3]
JP 2001-103127 (paragraph 0012, FIG. 1)
[Non-Patent Document 1]
Acoustical Society of Japan Spring Research Presentation, Presenter: Hiroyuki Matsushima et al., Proceedings of March 2002, Ip. 539 1-4-5
[0005]
As described above, some of the conventional techniques change the ringtone and the incoming means, and some require the application of ultrasonic waves. The problems of the prior art will be described below using an example of a mobile phone that is a premise of the present invention.
FIG. 21 is a diagram showing an outline of an example of a mobile phone as a premise of the present invention. Note that the same components are denoted by the same reference numerals and symbols throughout the drawings.
This figure (a) shows the perspective view of the folding-type mobile phone 101, and the mobile phone 101 is connected to a general telephone and another mobile phone via a wireless base station.
[0006]
A display unit 106 is provided in front of the mobile phone 101, and the display unit 106 is a part for displaying information necessary for the user.
Further, an operation unit 104 is provided in front of the mobile phone 101, and the key operation unit 104 is a part for performing dial input of the mobile phone.
A receiver unit 102 is provided at an upper position of the display unit 106, and the receiver unit 102 is a part where the user listens to hear the voice of the other party.
[0007]
A microphone unit 105 is provided at a lower position of the key operation unit 104, and the microphone unit 105 is a part that converts the sound into an electric signal in order to send the user's voice to the other party.
FIG. 2B shows a side view of the mobile phone 101, with the front surface of the receiver 107 of the receiver unit 102 facing the front surface of the mobile phone 101.
[0008]
A speaker unit 108 is provided on the back side of the display unit 106, and the front surface of the speaker 103 of the speaker unit 108 faces the back surface of the mobile phone 101. The speaker unit 108 is a part that emits a ring tone (melody) when an incoming call is received or when a melody is downloaded, informs the user of the incoming call, or notifies the user of information by the ring tone (melody).
FIG. 22 is a block diagram showing a schematic configuration of the speaker unit 108 of FIG.
[0009]
As shown in this figure, the ring tone ringing system of a mobile phone is provided with a sound source 109, and the sound source 109 generates a digital signal of a ring tone such as a melody (music) at the time of the incoming call.
A D / A (digital / analog) converter 110 is connected to the output side of the sound source 109, and the D / A converter 110 converts a digital signal from the sound source 109 into an analog signal.
[0010]
A speaker amplifier (SPKAMP) 111 is connected to the output side of the D / A converter 110, and the speaker amplifier 111 amplifies the analog signal from the D / A converter 110.
A speaker 103 is connected to the output side of the speaker amplifier 111, and the speaker 103 generates sound converted from the amplified signal of the speaker amplifier 111.
[0011]
In this manner, in the mobile phone 101, the display unit 106 and the key operation unit 104 are held in front, and thus the speaker 103 is positioned so as to face the back side.
[0012]
[Problems to be solved by the invention]
However, in the downloading method of music to the mobile phone 101 and the ringing method at the time of incoming call, output from the speaker 103 is performed. However, the mobile phone 101 itself becomes an obstacle and is difficult to reach in the direction opposite to the radial direction.
[0013]
For this reason, in particular, the sound pressure characteristic at a position about 30 cm away from the display unit 106 has deteriorated the sound pressure level in the high sound range.
Further, if the output level is increased in order to correct the sound pressure level deterioration with the display unit 106 as the front, another problem arises that noise is generated and uncomfortable surroundings are caused.
[0014]
Furthermore, not only correcting the sound pressure level degradation in the high sound range, but also actively improving the sound pressure characteristics in the high sound range is the next problem.
In other words, by actively playing high-frequency sound that includes an ultrasonic band that was not previously in the playback band range, the sound pressure characteristic's high-frequency sound pressure is increased, impacting the user (listener) ( The challenge is to make the brain waves in a relaxed state by giving inspiration and overwhelming) and listening to music including ultrasound.
[0015]
Next, since the volume of the ringtone of the speaker 103 is constant even if the distance between the mobile phone 101 and the user changes, the volume of the speaker 103 can be adjusted according to the distance between the mobile phone 101 and the user. If it can be done automatically, there is a problem that a more comfortable ringtone can be obtained.
In recent years, mobile phones equipped with a camera are rapidly spreading. As described above, a more comfortable mobile phone 101 can be obtained if focusing can be performed according to the distance between the mobile phone 101 and the user. There is a problem that would be.
[0016]
Therefore, in view of the above problems, the present invention increases the sound pressure level of the high sound pressure characteristics at the time of downloading and receiving music, corrects the sound characteristics of the ringtone and melody, and increases the directivity to the user. Improves the generation of speaker sound that can give comfort and relaxation by adding ultrasonic sound, and can respond to the distance between the mobile phone and the user It is an object of the present invention to provide a speaker mounting system and method for a mobile phone that is useful for adjusting the volume of sound and focusing the camera.
[0031]
[Means for Solving the Problems]
  In order to solve the above problems, the present invention provides a sound source that generates a ring tone signal including an ultrasonic band and a back surface of the mobile phone in a speaker mounting system for a mobile phone that rings a ring tone when an incoming call is received. A ringing ring speaker for ringing a ringtone signal generated by the sound source as a ringtone; and an ultrasonic band that is disposed in front of the mobile phone and extracts a ringtone of an ultrasonic band generated by the sound source. Of the ultrasonic band that rings the ringtone of the ringtone, and the ringtone of the ultrasonic band extracted by the ultrasonic speaker, the ringtone of the ringtone from the ringtone ringing speaker at the position in front of the mobile phone. Provided is a speaker mounting system for a mobile phone, comprising a ringtone correction unit for correcting ringing.
[0032]
  By this means, it is possible to improve the generation of the sound of the speaker that can give a feeling of comfort and relaxation by adding ultrasonic sound.
  Further, the ringtone correction unit delays the phase of the ringtone signal generated by the sound source by 180 °, and generates an ultrasonic band from the delayed ringtone signal.ofExtracted and extracted ultrasonic bandofRingtoneForA ringer is caused to ring, and the ringing tone from the ringing tone ringing speaker is corrected at the position in front of the mobile phone.
[0033]
  By this means, it is possible to adjust acoustic characteristics and directivity characteristics.
  Further, the ringing sound ring speaker is disposed on a side surface instead of the back surface of the mobile phone, an ultrasonic speaker is disposed on the front surface of the mobile phone, and the sound source generates a ring tone signal including an ultrasonic band. The ringtone correction unit is configured to generate an ultrasonic band from a ringtone signal generated by the sound source.ofExtracted and extracted ultrasonic bandofRingtoneForA ringer is caused to ring, and the ringing tone from the ringing tone ringing speaker is corrected at the position in front of the mobile phone.
[0034]
  By this means, it is possible to improve the generation of the sound of the speaker that can give a feeling of comfort and relaxation by adding ultrasonic sound.
  Further, the ringtone correction unit delays the phase of the ringtone signal generated by the sound source by 90 °, and generates an ultrasonic band from the delayed ringtone signal.ofExtracted and extracted ultrasonic bandofRingtoneForA ringer is caused to ring, and the ringing tone from the ringing tone ringing speaker is corrected at the position in front of the mobile phone.
[0035]
  By this means, it is possible to adjust acoustic characteristics and directivity characteristics.
  Preferably, the reproducible frequency of the ringing tone speaker is in a range of 100 Hz to 20 kHz, and the ultrasonic waveForThe reproducible frequency of the peaker is in the range of 15 kHz or more.
  By this means, it is possible to reproduce an ultrasonic band that exceeds the reproducible range of the ringing tone ringing speaker.
[0036]
  Preferably, the ultrasonic waveForThe reproducible frequency of the peaker is 5 kHz or less.
  By this means, it becomes possible to cope with a user who prefers reinforcement in the low frequency range.
  Furthermore, the ringing tone ringing speaker arranged on the back surface of the mobile phone is a wide band reproduction speaker.
[0037]
  This means simplifies the configuration.
  Further, a sub ultrasonic wave is placed on the back surface of the mobile phone on which the speaker for ringing ringing is arranged.ForPeaker is placed, the sub ultrasonicForPeeka is the ultrasonicForThe same ringing tone as that of the peaker is output, and the ringing tone from the ringing tone ringing speaker is corrected at the position on the back side of the mobile phone.
[0038]
  By this means, the effect of the present invention can be obtained regardless of whether the melody is heard from the front or the back.The
[0042]
  By this means, the present invention can be applied regardless of the arrangement of the incoming ringing speaker and the ultrasonic speaker.
  Furthermore, the present invention relates to a method of ringing a mobile phone speaker mounted on a mobile phone, a step of generating a ring tone signal including an ultrasonic band from a sound source, and a ring tone signal generated by the sound source of the mobile phone. Ringing as a ringtone from a ringtone ringing speaker arranged on the back surface, a step of delaying the phase of the ringtone signal generated by the sound source by 180 °, and an ultrasonic band from the delayed ringtoneofA step of extracting sound, and the extracted ultrasonic waveofUltrasonic waves placed on the front of the mobile phone as ringtonesForThere is provided a method for ringing a cellular phone speaker, comprising: a step of ringing with a speaker and correcting a ringtone from the ringing tone ringing speaker at a position in front of the cellular phone.
[0043]
By this means, it is possible to improve the generation of sound from a speaker that can give a feeling of comfort and relaxation by adding ultrasonic sound, and further, it is possible to adjust acoustic characteristics and directivity characteristics. .
[0044]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration relating to a first embodiment of a ringtone ringing system for a mobile phone according to the present invention.
As shown in this figure, compared with FIG. 22, the output of the D / A converter 110 is branched, and a high-pass filter (HPF) 113 is connected to the branch side. A signal in a band of an arbitrary frequency or higher in the signal output from the A converter 110 is extracted and output.
[0045]
A receiver amplifier 112 is connected to the input side of the receiver 107, and the receiver amplifier 112 amplifies the analog signal of the voice of the other party.
The output side of the high-pass filter 113 is connected to the input side of the receiver amplifier 112. The receiver amplifier 112 amplifies the output signal extracted from the high-pass filter 113 and causes the receiver 107 to generate a ring tone.
[0046]
Next, the operation of the ringtone ringing system for mobile phones in FIG. 1 will be described.
The signal output from the sound source 109 is converted into an analog signal by the D / A converter 110 and becomes an input signal of the speaker 103 and the receiver 107.
An input signal to the speaker 103 is amplified by the speaker amplifier 111 and converted into a ring tone radiated from the speaker 103.
[0047]
On the other hand, the input signal to the receiver 107 becomes a high-frequency component signal by the high-pass filter 113, is amplified by the receiver amplifier 112, and is converted into sound radiated from the receiver 107.
In this way, when the high-frequency sound of the ringtone is transmitted from the speaker due to the ringtone radiated from the receiver 107, the mobile phone 101 itself becomes an obstacle, and the high-frequency range that is difficult to reach in the reverse direction of the radial direction. Sound waves are corrected. That is, similarly to the front direction of the arrangement surface of the speaker 103, the sound pressure level increases in the high frequency range in the front direction of the receiver 107 arrangement surface (the arrangement surface of the display unit 106).
[0048]
FIG. 2 is a block diagram showing a schematic configuration relating to a second embodiment of the ringing tone ringing system for a mobile phone according to the present invention.
As shown in this figure, compared with FIG. 1, a delay circuit 114 is provided in front of the high-pass filter 113, and the delay circuit 114 determines the phase of the signal output from the D / A converter 110, for example, The output is delayed by 180 ° and output to the receiver amplifier 112.
[0049]
Next, the operation of the ringtone ringing system for a mobile phone in FIG. 2 will be described.
The input signal to the receiver 107 is delayed in phase by 180 ° by the delay circuit 114, becomes a high-frequency component signal by extraction by the high-pass filter 113, is amplified by the receiver amplifier 112, and is converted into a ringtone that is radiated from the receiver 107. Is done.
In this embodiment, as shown in FIG. 21B, the speaker 103 and the receiver 107 are arranged in exactly opposite directions, and the receiver 107 is 180 degrees behind the speaker 103 in the phase of its high frequency sound. And radiate a ringtone.
[0050]
The arrangement of the speaker 103 is not limited to the back surface of the mobile phone 101 in general.
FIG. 3 is a diagram showing the result of a simulation regarding the directivity of the ringtone ringing system of the mobile phone in FIG.
As shown in this figure, the back surface direction (R) where the speaker 103 is arranged is 0 ° (starting point), the frequency is 6 kHz, the observation point is 0.3 m, and the speaker 103 and the receiver 107 are sound sources. It is the result of the simulation which compared the directivity of an Example and the directivity which used only the speaker 103 which is a prior art as a sound source.
[0051]
By adding the receiver 107 as a sound source, the sound pressure level in the direction of the display unit 106 can be increased, and the sound pressure level in the side surface direction of the mobile phone 101 can be decreased.
FIG. 4 is a diagram showing the result of simulation regarding the frequency characteristics of the sound pressure level at a point about 30 cm away from the display unit 106.
[0052]
As shown in the figure, when the user holds the display unit 106 in a state of viewing, the simulation is performed on the frequency characteristics of the sound pressure level at a point (position of the user's ear) about 30 cm away from the display unit 106. As a result, compared with the frequency characteristics of the sound pressure level of the conventional example, the sound pressure level in the high sound range of 1.5 kHz or more can be increased as a whole by the method of the embodiment.
[0053]
Therefore, according to the present embodiment, since the phase of the ringtone from the speaker 103 and the sound from the receiver 107 is delayed by the same amount on the side surface portion of the mobile phone 101, the phase difference between the two is canceled out at 180 °. Fit. Thereby, the discomfort given to the circumference | surroundings can be reduced.
The phase to be delayed is generally an arbitrary phase angle. This is to enable the cancellation at an arbitrary position of the mobile phone 101.
[0054]
As described above, the effect of increasing the sound pressure level is maintained as it is even in the high sound range in the front direction of the receiver 107 arrangement surface (the arrangement surface of the display unit 106) in the same manner as the front direction of the arrangement surface of the speaker 103. The
FIG. 5 is a block diagram showing a schematic configuration relating to the third embodiment of the ringtone ringing system for a mobile phone according to the present invention.
[0055]
As shown in this figure, the branch signal output from the D / A converter 110 may be directly input to the receiver amplifier 112 as compared with FIG.
As a result, the sound of the entire frequency is generated from the receiver 107 in the same manner as the speaker 103, so that the sound pressure level in the high sound range is increased and the sound wave in the high sound range is corrected. In addition, the directivity of the speaker 103 approaches the directivity of the receiver 107.
FIG. 6 is a block diagram showing a schematic configuration relating to the fourth embodiment of the ringtone ringing system for a mobile phone according to the present invention.
[0056]
As shown in this figure, as compared with FIG. 1, the output of the D / A converter 110 is branched, and a low-pass filter (LPF) 115 is connected to the branch side. A signal in a band below an arbitrary frequency in the signal output from the A converter 110 is output to the receiver amplifier 112.
As a result, the low-frequency sound of the ringtone from the speaker 103 is also generated from the receiver 107, the sound pressure level in the low-frequency range is increased, and the low-frequency sound wave is corrected so as to suit the user's preference for the low-frequency range. Is done.
[0057]
FIG. 7 is a block diagram showing a schematic configuration relating to the fifth embodiment of the ringtone ringing system for a mobile phone according to the present invention.
As shown in this figure, compared with FIG. 2, the amplification factor of the receiver amplifier 112 is made variable, the amplification factor is reduced during a call, while the melody is ringing at the time of incoming call, while the ringing tone is ringing at the time of downloading. Increases the degree of amplification.
[0058]
As a result, the sound pressure level generated from the receiver 107 can be reduced during a call while the mobile phone 101 is placed on the ear, while the melody is ringing when the mobile phone 101 is separated from the ear and the ringtone at the time of downloading is downloaded. During sounding, the sound pressure level generated from the receiver 107 can be increased.
It should be noted that the sound pressure level of the ring tone from the receiver 107 can be adjusted within a range similar to or lower than the sound pressure level from the speaker 103.
[0059]
FIG. 8 is a block diagram showing a schematic configuration relating to the sixth embodiment of the ringtone ringing system for a mobile phone according to the present invention.
As shown in this figure, as compared with FIG. 2, the digital data from the sound source 109 is delayed by the digital delay unit 114A, and the digital data of the high-frequency sound is converted by the digital high-pass filter 113A. The digital data of the high frequency sound that has been passed through and delayed is converted into an analog signal by the D / A converter 116 and output to the receiver amplifier 112.
[0060]
Thereby, since digital processing is performed, the applicability of signal processing is widened, and the configuration can be simplified.
In the present invention, the speaker 103 is not limited to the back surface side of the receiver unit 102 and the side surface side of the mobile phone 101, and may be located on any surface of the mobile phone 101. The delay circuit 114 can adjust the acoustic characteristics and directivity by adjusting the delay of the ringtone generated from the receiver 107 depending on the position of the speaker 103.
[0061]
FIG. 9 is a diagram illustrating an example in which the speaker unit 108 is located on the side surface of the position mobile phone 101.
As shown in the figure, when the speaker unit 108 is provided on the side surface of the mobile phone 101, the direction of the ring tone generated from the speaker 103 of the speaker unit 108 is not directed to the front of the receiver 107 but is horizontal.
[0062]
For this reason, as a seventh embodiment, a ringing tone is generated simultaneously with the speaker unit 108 from the receiver 107 using the configuration of FIG.
Thereby, the directivity of the speaker 103 is corrected so that the directivity of the speaker 103 approaches the front direction of the receiver 107.
Furthermore, as an eighth embodiment, using the configuration of FIG. 1, a high-frequency ring tone is generated simultaneously with the speaker unit 108 from the receiver 107.
[0063]
In FIG. 9, since the ring tone from the speaker 103 comes from the left side in FIG. 9, the user's head itself becomes an obstacle, and the high-frequency sound reaches the right ear more than the low-frequency sound due to diffraction. This is because the high-frequency sound wave has a problem that the mobile phone 101 itself becomes an obstacle and is difficult to reach in the opposite direction of the radiation direction.
Thereby, the ringtone of the speaker 103 is corrected by the high-range ringtone generated from the receiver 107.
[0064]
Furthermore, as a ninth embodiment, a high-frequency ringtone is generated by delaying 90 ° from the receiver 107 using the configuration of FIG. This is to adjust the acoustic characteristics and directivity.
Furthermore, as a tenth embodiment, the receiver 107 generates a ringtone in the low frequency range simultaneously with the speaker unit 108 using the configuration of FIG.
[0065]
As a result, the sound pressure level in the low sound range is increased, and the sound wave in the low sound range is corrected according to the user's preference for the low sound range.
FIG. 10 is a diagram showing a schematic configuration of a mobile phone according to an eleventh embodiment of the present invention. As shown in FIG. 20, compared with FIG. 20, an ultrasonic speaker 115 is provided in the lower part of the display unit 106 in front of the mobile phone 101, and the ultrasonic speaker 115 has a higher frequency band that the speaker 103 cannot generate. Generate sound.
[0066]
Preferably, the reproducible frequency of the speaker 103 is in the range of 100 Hz to 20 kHz, whereas the reproducible frequency of the ultrasonic speaker 115 is in the range of 15 kHz to 1 GHz.
In this way, it is possible to reproduce the ultrasonic band that exceeds the reproducible range of the ringing tone ringing speaker.
[0067]
Even if the level of the output sound of the ultrasonic speaker 115 is the same as the level of the output sound of the speaker 103 or a radiation sound level of 50%, sufficient sound pressure correction can be expected.
FIG. 11 is a block diagram showing a schematic configuration of a ringing system for a mobile phone according to the eleventh embodiment of FIG.
As shown in this figure, as compared with FIG. 21, the sound source 109 is a sound source (100 Hz to 1 GHz) capable of generating a digital signal of a ring tone such as a melody signal and an audio signal including an ultrasonic band.
[0068]
The output of the D / A converter 110 connected to the sound source 109 is branched, an ultrasonic high-pass filter (HPF) 117 is connected to the branch side, and the ultrasonic high-pass filter 117 is connected to the D / A converter 110. A signal whose pass band is an ultrasonic band (range of 15 kHz to 1 GHz) in the signal output from the A converter 110 is extracted and output.
An ultrasonic amplifier 116 is connected to the output side of the ultrasonic high-pass filter 117, and the ultrasonic amplifier 116 amplifies the output signal extracted from the ultrasonic high-pass filter 117, The sound is output to the ultrasonic speaker 115, and the ultrasonic speaker 115 outputs the sound in the ultrasonic band (range of 15 kHz to 1 GHz) of the ringtone.
[0069]
Next, the operation of the ringtone ringing system for mobile phones in FIG. 11 will be described.
The signal output from the sound source 109 is converted into an analog signal by the D / A converter 110 and becomes an input signal of the speaker 103 and the speaker 115 for ultrasonic waves.
An input signal to the speaker 103 is amplified by the speaker amplifier 111 and converted into a radiated ringing tone of 20 kHz or less from the speaker 103.
[0070]
  On the other hand, an input signal to the ultrasonic speaker 115 becomes a high-frequency component signal by the ultrasonic high-pass filter 117, is amplified by the ultrasonic amplifier 116, and is ultrasonicated from the ultrasonic speaker 115.BandwidthIt is converted into a radiated sound of any frequency including
  With these two speaker outputs, a melody including an ultrasonic band can be reproduced, and a sound pressure level in a high sound range can be increased.
[0071]
FIG. 12 is a diagram showing the result of a simulation regarding the directivity of the ringtone ringing system for the mobile phone in FIG.
As shown in this figure, the back surface direction (R) where the speaker 103 is arranged is 0 ° (starting point), the frequency is 6 kHz, the observation point is 0.3 m, the speaker 103 and the ultrasonic speaker 115 This is a result of a simulation comparing the directivity of the embodiment using the sound source as a sound source and the directivity using only the speaker 103 as a conventional sound source.
[0072]
By adding the ultrasonic speaker 115 as a sound source, the sound pressure level in the direction of the display unit 106 can be increased.
FIG. 13 is a diagram showing a result of simulation regarding the frequency characteristics of the sound pressure level at a point about 30 cm away from the display unit 106.
As shown in the figure, when the user holds the display unit 106 in a state of viewing, the simulation is performed on the frequency characteristics of the sound pressure level at a point (position of the user's ear) about 30 cm away from the display unit 106. As a result, as compared with the frequency characteristics of the sound pressure level of the conventional example, the sound pressure level in the high sound range of 5 kHz or higher can be increased as a whole by the method of the embodiment.
[0073]
Therefore, according to the embodiment of the present invention, the sound pressure in the high frequency range is corrected in the direction of the display unit 106 which is deteriorated only by the speaker 103 by outputting the high frequency range sound from the ultrasonic speaker 115. Therefore, in a state where the user holds the mobile phone 101 on which the speaker 103 is mounted on the back surface (the surface opposite to the display surface 106) for the purpose of viewing the display unit 106, the high sound range The acoustic characteristics of are improved.
[0074]
Furthermore, in addition to the output equivalent to that of the conventional example from the speaker 103, a high-frequency sound including an ultrasonic band is output from the ultrasonic speaker 115, and the user listens to the sound, so that it is transmitted to the user's brain. Since the alpha waves appear strongly, it is possible to feel a comfortable state when playing the melody sound and to obtain a relaxed state.
Furthermore, by outputting a high-frequency melody sound including an ultrasonic component from the ultrasonic speaker 115, the user is moved and impressed by the timbre, so that the user can impress the melody sound. It becomes possible.
[0075]
Note that the ultrasonic speaker 115 outputs a sound in the ultrasonic band (range of 15 kHz to 1 GHz) of the ringtone, but may output a low sound range of 5 kHz or less. This is for users who prefer low-frequency reinforcement.
In the above description, the ultrasonic speaker 115 is disposed on the front when the direction of the display unit 106 is the front. However, the ultrasonic speaker 115 is not limited to the front and may be located on any surface of the mobile phone 101 or on the side. .
[0076]
This is because the present invention can be applied regardless of the arrangement of the speaker 103 and the speaker 115 for ultrasonic waves.
In this case, the phase angle of the sound generated from the ultrasonic speaker 115 is determined based on the positions of the ultrasonic speaker 115 and the speaker 103, and a delay circuit is added between the ultrasonic speaker 115 and the speaker 103. Thus, the acoustic characteristic and directivity can be adjusted by giving an arbitrary phase angle.
[0077]
For example, the phase of the output sound of the speaker 103 may be delayed by 180 ° by a delay circuit in order to eliminate the uncomfortable feeling when the output sound of the ultrasonic speaker 115 and the speaker 103 disposed on the back surface and the front surface is auditioned. .
Furthermore, the phase of the output sound of the speaker 103 may be delayed by 90 ° by a delay circuit in order to eliminate the uncomfortable feeling when the output sound of the ultrasonic speaker 115 and the speaker 103 arranged on the side surface and the back surface is auditioned. .
[0078]
The location of the ultrasonic speaker 115 and the speaker 103 in the back direction is arbitrary, and they may be arranged on the same surface.
When arranged on the same plane, a wide-band reproduction speaker in which the speaker 103 and the ultrasonic speaker 115 are combined as described below may be used.
This simplifies the configuration.
[0079]
FIG. 14 is a block diagram showing a schematic configuration of a ringing system for a mobile phone according to a twelfth embodiment.
As shown in this figure, the wide band reproduction speaker 118 is a speaker capable of reproducing a wide band sound from a band that can be output by the speaker 103 of FIG. 11 to an ultrasonic band.
The sound source 109 generates a melody signal and an audio signal of the wide band reproduction speaker 118 including an ultrasonic band.
[0080]
The D / A converter 110 converts the digital signal and audio signal generated by the sound source 109 into an analog signal.
The broadband amplifier 119 amplifies the output signal of the D / A converter 110 and outputs it to the broadband playback speaker 118.
In this way, it is possible to reproduce a melody sound that is more impressive than the sound generated from the speaker 103 in FIG.
[0081]
FIG. 15 is a diagram showing a schematic configuration of a mobile phone according to a thirteenth embodiment of the present invention. As shown in this figure, compared to FIG. 10, a sub-ultrasonic speaker 120 is provided, and the sub-ultrasonic speaker 120, similar to the ultrasonic speaker 115, generates sound in a high frequency band. In the arrangement position, the ultrasonic speaker 115 is positioned in a direction opposite to the arrangement position.
[0082]
Furthermore, a camera unit 121 and a microphone unit 122 are provided on the same plane as the position where the sub ultrasonic speaker 120 is arranged.
The camera unit 121 captures a person, an animal, a landscape, and the like and plays the same role as a digital camera.
The microphone part 122 is in the sound hole part, and has a role of collecting sound when shooting a moving image using the camera part 121 and converting it into an electric signal.
[0083]
FIG. 16 is a block diagram showing a schematic configuration of an incoming ringing system for a mobile phone according to the thirteenth embodiment of FIG.
As shown in the figure, the sub-ultrasonic speaker 120 is connected in parallel with the ultrasonic speaker 115 and inputs the signal amplified by the ultrasonic amplifier 116.
[0084]
In addition, the speaker 103 always rings during melody (voice) reproduction, and the melody including the ultrasonic band can be reproduced by causing the ultrasonic speaker 115 and the sub ultrasonic speaker 120 to sound simultaneously or only one of them. it can.
Here, since the ultrasonic wave has a short wavelength λ (360 [m / s] / 15 [kHz] = 22.67 mm or less), the radiated sound of the ultrasonic speaker 115 becomes a baffle plate on the mounting surface, and in the front direction. Has directivity.
[0085]
For this reason, in the above-described embodiments, the effect of the present invention is not expected in the back direction of the display unit 106 where the ultrasonic speaker 115 is located. In this embodiment, the ultrasonic speaker 115 is arranged in the direction of the display unit 106, and the sub ultrasonic speaker 120 is arranged in the back direction (the direction of the speaker 103), so that a melody can be generated on either the front side or the back side. The effect of the present invention can be obtained even by listening.
[0086]
FIG. 17 is a diagram showing a schematic configuration of a mobile phone according to a fourteenth embodiment of the present invention. The mobile phone 101 shown in this figure is the same as that shown in FIG. 15, and the microphone unit 122 collects sound when shooting a moving image using the camera unit 121 and converts it into an electrical signal. The ultrasonic wave output from the sound wave speaker 120 has a role of detecting a reflected wave returned by hitting a subject.
[0087]
FIG. 18 is a block diagram showing a schematic configuration of an incoming ringing system for a mobile phone according to the fourteenth embodiment of FIG.
As shown in FIG. 11, compared with FIG. 11, an ultrasonic level determination circuit 123 is further connected between the microphone unit 122 and the camera unit 121, and the ultrasonic level determination circuit 123 is detected by the microphone unit 122. The reflected sound level of the sub ultrasonic speaker 120 is determined, and the distance R between the mobile phone 101 and the subject is calculated.
[0088]
The camera unit 121 is provided with a lens control unit 121A. The lens control unit 121A adjusts the camera lens of the camera unit 121 based on the distance R to the subject calculated by the ultrasonic level determination circuit 123 so as to focus. Used for.
In this way, the distance R between the mobile phone 101 and the subject can be measured by combining the camera unit 121 and the microphone unit 122 included in the mobile phone 101 and the sub-ultrasonic speaker 120 of the present invention. Accurate lens adjustment is possible at the time of camera shooting, and clear shooting is possible compared to the conventional case.
[0089]
FIG. 19 is a block diagram showing a schematic configuration of a ringing system for mobile phones according to the fifteenth embodiment of FIG.
As shown in FIG. 18, compared to FIG. 18, a level adjuster 124 and a voice recorder 125 are provided on the output side of the microphone unit 122, and the level adjuster 124 is connected to the mobile phone 101 and the subject from the ultrasonic level determination circuit 123. The result of calculating the distance R to is input.
[0090]
The level adjuster 124 controls the output gain of the microphone unit 122 according to the distance R to the subject and adjusts the volume when the voice recorder 125 is used.
FIG. 20 is a block diagram showing a schematic configuration of a ringing system for a mobile phone according to the sixteenth embodiment of FIG.
As shown in this figure, as compared with FIG. 18, a level adjuster 126 is provided between the speaker amplifier 111 and the speaker 103, and the level adjuster 126 is connected to the mobile phone 101 and the subject from the ultrasonic level determination circuit 123. The result of calculating the distance R is input.
[0091]
The level adjuster 126 controls the output level of the speaker amplifier 111 according to the distance R to the subject, and automatically reduces the level of the melody sound pressure when the user is nearby, so that the user is far away. If so, increase the melody sound pressure level.
In the above description, the structure of the folding mobile phone has been described. However, the present invention is not limited to this, and other mobile phones, pagers, PHSs (Personal Handyphones).
(System) and the like.
[0092]
【The invention's effect】
As described above, according to the present invention, a ringing tone signal is generated from a sound source, and the ringing tone signal generated by the sound source is ringed as a ringing tone from a ringing tone ringing speaker disposed on the back surface of the mobile phone. The phase of the ringtone signal generated in step 1 is delayed by 180 °, the high range sound is extracted from the delayed ringtone, and the extracted high range sound is placed on the front of the mobile phone, from the receiver for making a voice call Since the ringtone output from the speaker for ringtone ringing is corrected at the position in front of the mobile phone, the sound pressure level deterioration of the ringtone due to the transmission of the high frequency sound from the ringtone ringing speaker is corrected. When the music is downloaded or received, the sound pressure level in the high sound range is increased. On the side surface of the mobile phone, the phase difference between the ringtone from the ringtone ringing speaker and the ringtone from the receiver is 180. Strike at ° Since they disappear, the discomfort given to the surroundings can be reduced.
[0093]
Furthermore, a ring tone signal including the ultrasonic band is generated from the sound source, and the ring tone signal generated by the sound source is ringed as a ring tone from the ring tone ring speaker arranged on the back side of the mobile phone. The phase of the signal is delayed by 180 °, the sound including the ultrasonic band is extracted from the delayed ringtone, and the sound including the extracted ultrasonic wave is disposed on the front surface of the mobile phone, and is used for an ultrasonic for performing a voice call. Since the ringtone output from the speaker and the ringtone from the speaker for ringtone ringing is corrected at the position in front of the mobile phone, the sound of the speaker that can give comfort and relaxation by adding ultrasonic sound Occurrence can be improved, and acoustic characteristics and directivity characteristics can be adjusted.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration relating to a first embodiment of a ringtone ringing system for a mobile phone according to the present invention;
FIG. 2 is a block diagram showing a schematic configuration relating to a second embodiment of a ringtone ringing system for a mobile phone according to the present invention;
3 is a diagram showing a result of a simulation regarding directivity of the ringtone ringing system of the mobile phone in FIG. 2. FIG.
FIG. 4 is a diagram showing a result of a simulation regarding a frequency characteristic of a sound pressure level at a point about 30 cm away from a display unit.
FIG. 5 is a block diagram showing a schematic configuration relating to a third embodiment of a ringtone ringing system for a mobile phone according to the present invention;
FIG. 6 is a block diagram showing a schematic configuration relating to a fourth embodiment of a ringtone ringing system for a mobile phone according to the present invention;
FIG. 7 is a block diagram showing a schematic configuration relating to a fifth embodiment of a ringtone ringing system for a mobile phone according to the present invention;
FIG. 8 is a block diagram showing a schematic configuration relating to a sixth embodiment of a ringtone ringing system for a mobile phone according to the present invention;
9 is a diagram showing an example in which the speaker unit 108 is located on the side surface of the position mobile phone 101. FIG.
FIG. 10 is a diagram showing a schematic configuration of a mobile phone according to an eleventh embodiment of the present invention.
11 is a block diagram showing a schematic configuration of a mobile phone ringing system according to an eleventh embodiment of FIG. 10;
12 is a diagram showing a result of a simulation regarding directivity of the ringtone ringing system for the mobile phone in FIG. 11. FIG.
FIG. 13 is a diagram showing a result of a simulation regarding a frequency characteristic of a sound pressure level at a point about 30 cm away from the display unit.
FIG. 14 is a block diagram showing a schematic configuration of an incoming ringing system for a mobile phone according to a twelfth embodiment.
FIG. 15 is a diagram showing a schematic configuration of a mobile phone according to a thirteenth embodiment of the present invention.
16 is a block diagram showing a schematic configuration of a mobile phone ringing system according to a thirteenth embodiment of FIG. 15;
FIG. 17 is a diagram showing a schematic configuration of a mobile phone according to a fourteenth embodiment of the present invention.
18 is a block diagram showing a schematic configuration of a mobile phone ringing system according to the fourteenth embodiment of FIG. 17;
FIG. 19 is a block diagram showing a schematic configuration of an incoming ringing system for a mobile phone according to the fifteenth embodiment of FIG. 17;
20 is a block diagram showing a schematic configuration of a mobile phone ringing system according to the sixteenth embodiment of FIG. 17;
FIG. 21 is a diagram showing an outline of an example of a mobile phone as a premise of the present invention.
22 is a block diagram showing a schematic configuration of a speaker unit 108 of FIG. 21. FIG.
[Explanation of symbols]
101 ... Mobile phone
102 ... Receiver unit
103 ... Speaker
104: Key operation unit
105 ... Microphone part
106 ... Display section
107: Receiver
108 ... Speaker unit
109 ... Sound source
110 ... D / A converter
111 ... Speaker amplifier
112 ... Receiver amplifier
113, 113A: high-pass filter
114, 114A ... delay circuit, delay unit
115 ... Ultrasonic speaker
116 ... Ultrasonic amplifier
117 ... High-pass filter for ultrasonic waves
118 ... Wide-band playback speaker
119 ... Wideband amplifier
120 ... Sub ultrasonic speaker
121 ... Camera unit
121A ... Lens control unit
122 ... Microphone part
123 ... Ultrasonic level determination circuit
124, 126 ... Level adjuster
125 ... Voice recorder

Claims (9)

In a mobile phone speaker mounting system that rings a ringtone when an incoming call is received,
A sound source that generates a ringtone signal including an ultrasonic band;
An incoming ring speaker that is arranged on the back surface of the mobile phone and rings as a ringtone signal generated by the sound source;
An ultrasonic speaker that is arranged in front of the mobile phone, extracts a ringtone of an ultrasonic band generated by the sound source, and rings a ringtone of the extracted ultrasonic band;
A ring tone correcting unit that rings a ringtone of an ultrasonic band extracted by the ultrasonic speaker and corrects ringing of the ringtone from the ringtone ringing speaker at a position in front of the mobile phone. A cellular phone speaker mounting system. The ringtone correction unit delays the phase of the ringtone signal generated by the sound source by 180 °, extracts the ringtone of the ultrasonic band from the delayed ringtone signal, and extracts the ringtone of the ultrasonic band as the ultrasonic wave. is ringing in Yosu speaker, said at positions in front of the mobile phone, and correcting the ringing of the ringtone from the ringtone ringing speaker, mobile phone speaker mounting system according to claim 1. The ringtone ringing speaker is disposed instead sides on a rear surface of the mobile phone, the mobile in front of the phone ultrasonic Yosu speaker disposed, the sound source generates a ring tone signal comprises an ultrasonic band, wherein ringtone correction unit ringtone ultrasonic band that extracts the ringtone ultrasonic extraction from the incoming sound signal generated by the sound source is sound in the ultrasonic Yosu speaker, at a position in front of the mobile phone , and correcting the ringing of the ringtone from the ringtone ringing speaker, mobile phone speaker mounting system of claim 1. The ringtone correction unit delays the phase of the ringtone signal generated by the sound source by 90 °, extracts the ringtone of the ultrasonic band from the delayed ringtone signal, and extracts the ringtone of the ultrasonic band for the ultrasonic wave . It is ringing in speaker, wherein at the location of the front of the mobile phone, and correcting the ringing of the ringtone from the ringtone ringing speaker, mobile phone speaker mounting system according to claim 3. Reproducible frequency of the ringing tone ringing speaker is in the range of 100Hz～20kHz, wherein the reproducible frequency of the ultrasonic Yosu speaker is in the range of more than 15 kHz, claims 1 4 portable telephone loudspeaker mounting system according to one of the claims. The ultrasonic frequency which can be reproduced in Yosu speaker is equal to or less than 5 kHz, the cellular phone loudspeaker mounting system according to claim 5. The speaker mounting system for a mobile phone according to claim 1 or 2 , wherein the ring-tone ringing speaker disposed on the back surface of the mobile phone is a wide-band playback speaker. Wherein the ring tone ringing speaker is disposed sub ultrasound Yosu speaker on the rear surface of the mobile phone to be located, said sub-ultrasonic Yosu speaker is outputting the ultrasonic Yosu speaker the same ringtone and correcting the ringtone from the ringtone ringing speaker on the rear surface of the position of the cellular phone, the cellular phone loudspeaker mounting system according to one of claims 1 to claim 4. In the ringing method of the mobile phone speaker mounted on the mobile phone,
Generating a ringtone signal including an ultrasonic band from a sound source; and
Ringing a ringtone signal generated by the sound source as a ringtone from a ringtone ringing speaker disposed on the back surface of the mobile phone; and
Delaying the phase of the ringtone signal generated by the sound source by 180 °;
Extracting a sound including an ultrasonic band from the delayed ringtone;
A step of correcting Ringtone ringtones containing the extracted the ultrasonic waves from said ultrasonic Yosu the ringtone sound for speakers located in front of the mobile phone is ringing in speaker disposed on the front of the mobile phone An incoming ringing method for a cellular phone speaker, comprising:

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