JP4659713B2 - Acoustic device, portable terminal device and stand - Google Patents

Description

The present invention relates to an acoustic device , a portable terminal device, and a cradle .

Conventionally, when charging a battery of a mobile phone as a mobile terminal device, the mobile phone is charged by being inserted into a cradle. Incidentally, in recent years, with the development of music distribution services using mobile phones, the opportunity to play music on mobile phones has increased. In addition to reproducing music from a speaker with a mobile phone when being carried, it is also required to reproduce the speaker even in a charged state. Therefore, for example, Patent Document 1 discloses a mobile phone pedestal having a charging function for charging a secondary battery of a mobile phone, an amplifying unit for amplifying an audio signal from the mobile phone, and the amplification A speaker having a pair of speakers for emitting the sound signal amplified in the unit as stereo sound to the outside is disclosed, and it is shown that an audio device is configured by mounting a mobile phone on this pedestal. ing.
JP 2002-101177 A

  However, in the acoustic device of Patent Document 1, a set of loudspeaker parts larger than the speaker mounted on the mobile phone must be arranged on the pedestal, and the structure of the pedestal becomes large and the entire acoustic device is expensive. There was a problem of becoming.

Therefore, in view of the above-described problems, the present invention is an acoustic device including a portable terminal device and a table on which the portable terminal device is placed, and the portable terminal device stores a control unit and acoustic information. A storage unit; a reproduction unit that reproduces the acoustic information; a first speaker unit that emits an acoustic signal output from the reproduction unit; and an output terminal that outputs the acoustic signal to the outside. The pedestal includes an input terminal, and a second speaker unit that emits only a low frequency sound of the acoustic signal input from the input terminal that contacts the output terminal, and the control unit includes the control unit, While only the sound in the low frequency range is being emitted from the second speaker unit, the sound signal in the middle and high frequency range is also emitted from the first speaker unit.

Preferably, the cradle further includes an amplifying unit that amplifies only a low-frequency sound of the acoustic signal input from the input terminal.
Preferably, the amplification unit is driven based on a control signal from the control unit received via the output terminal.
Preferably, the pedestal further includes a leg portion that forms a gap between the bottom wall portion and the top surface of the table when placed on the tabletop, and a sound emission hole of the second speaker unit. That is good.
Preferably, the cradle further includes a power supply terminal that receives power from the outside to the amplifying unit, and the portable terminal device is supplied with power from the cradle via the output terminal. Is good.
Preferably, the portable terminal device further includes a ground terminal, and the pedestal further includes a ground terminal formed so as to protrude from the output terminal in a direction facing the portable terminal device when placed. That is good.
A portable terminal device according to a second aspect is a portable terminal device connected via an input terminal of a pedestal, and includes a control unit, a storage unit that stores acoustic information, and a reproduction unit that reproduces the acoustic information. A speaker unit that emits an acoustic signal output from the reproduction unit; and an output terminal that outputs the acoustic signal to the outside, and the control unit includes the input terminal in contact with the output terminal. During the output of the acoustic signal to the cradle, a sound in a middle and high range is emitted from the speaker unit.
A pedestal according to a third aspect is a pedestal that performs charging via an output terminal of a mobile terminal device, and is connected to a power supply terminal that receives external power supply and an output terminal of the mobile terminal device. A terminal, an amplifying unit for amplifying a low-frequency sound of an acoustic signal output from the mobile terminal device and input via the input terminal, and a medium-high frequency sound of the acoustic signal is released by the mobile terminal device. A speaker unit that emits only low-frequency sounds of the acoustic signal amplified by the amplification unit during sound, and the amplification unit is input from the portable terminal device via the input terminal The driving is based on the signal.

According to the present invention, when reproducing the sound information of the mobile terminal device, and the sound output to the outside as a stereo sound from a pair of speakers portion with the sound of high directivity mid-high range to the mobile terminal device, the directivity Since low-frequency low-frequency sounds are emitted outward from the speaker unit of the cradle, only one speaker unit is required on the cradle, and an acoustic device that can emit stereo sound effects is inexpensive. Can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. Hereinafter, a mobile phone will be described as a mobile terminal device. However, the present invention is not limited to this, and other mobile terminal devices such as a personal digital assistant (PDA), a notebook computer, a digital camera, and a small audio player. It may be. Moreover, although the cradle which mounts a portable terminal device on an upper surface as a stand is demonstrated, this invention is not limited to this, The form which mounts another shape and a portable terminal device is not limited to this. It may be a different cradle.

  FIG. 1 shows an external perspective view of an acoustic device 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the acoustic device 1 according to the present embodiment includes a foldable mobile phone 2 as a mobile terminal device and a cradle 3 as a dome-shaped table. The cellular phone 2 in a folded state is placed so as to be inserted into a placement portion 31 formed on the upper surface of the cradle 3.

  FIG. 2 shows an external perspective view in a state where the mobile phone 2 is opened. FIG. 3 shows an external perspective view of the cellular phone 2 in a folded state.

As shown in FIG. 2, the mobile phone 2 includes an operation unit side body 21 having a rectangular planar shape and a display unit side body 22 having a rectangular planar shape. The operation unit side body 21 has an inner operation button group 24 disposed on the inner side surface 21a which is a surface facing the display unit side body 22 in a folded state, and a voice uttered by the user of the mobile phone 2 during a call. comprises an audio input unit 26 is input, a pair of speakers for outputting ringer sound or music information such as a stereo sound (250 in FIG. 7), the.

Inside the operation button group 24, and the function setting operation button 24a for operating various settings and various features such as a telephone directory function and a mail function, the input in order to enter the characters such as numbers and e-mail phone number The operation button 24b and a determination operation button 24c for performing determination and scrolling in various operations and for selecting and determining a music to be reproduced are configured.

  Further, a battery (260 in FIG. 7) accommodated on the outer surface 21b side which is the surface opposite to the inner surface 21a of the operation unit side body 21, and a mobile phone (not shown) disposed on the outer surface 21b. Side terminal group. The mobile phone side terminal group includes an acoustic signal output terminal for outputting an acoustic signal, a control signal output terminal for outputting a control signal for controlling an amplification unit (310 in FIG. 7) to be described later, a charging terminal, and a ground terminal. And.

The display unit side body 22 is arranged on an inner side surface 22a that is a surface facing the operation unit side body 21 in a folded state, and an inner display unit 27 such as a liquid crystal display or an organic EL display for displaying various information. When provided with an audio output unit 29 to output the sound of the other party of the call, the.

Further, the upper end portion of the operation unit side body 21 and the lower end portion of the display unit side body 22 are connected via a hinge mechanism 23 so as to be opened and closed. Mobile phone 2 by the operation unit side body 21 connected via a hinge mechanism 23 and the display unit side body 22 relatively rotates (rotates), the display and operation unit side body 21 The unit-side housing 22 can be opened (closed state) or the operation unit-side housing 21 and the display unit-side housing 22 can be folded (folded state).

  FIG. 3 shows an external perspective view of the cellular phone 2 in a folded state. As shown in FIG. 3, the mobile phone 2 displays various types of information that are arranged at the approximate center of the outer operation button group 25 arranged on the outer side in the folded state and the side surface 22 b of the display unit side body 22. And an outer display unit 28 such as a liquid crystal display or an organic EL display. The outer operation button group 25 is arranged so as to surround the outer display unit 28 of the display unit side body 22, and performs a determination and scrolling in various operations and a selection operation button 25a for selecting and determining a music to be reproduced. Function setting operation buttons 25b and 25c for operating various functions such as various settings, a telephone book function, and a mail function are provided.

  Here, the outer operation button group 25 and the outer display unit 28 are exposed to the outside even when placed on the cradle 3 shown in FIG. In addition, in this embodiment, although the form of what is called a folding-type mobile telephone apparatus is shown, the form of the mobile telephone apparatus according to the present invention is not particularly limited to this.

  FIG. 4 shows an external oblique view of the cradle 3 as a cradle. FIG. 5 is a view for explaining a cross section of the cradle 3 of FIG. FIG. 6 is a diagram illustrating a mechanism in which the cradle side terminal group in the cradle 3 projects.

As shown in FIG. 4, the cradle 3 includes a concave placement portion 31 on which the mobile phone 2 is placed, and a cradle-side terminal group 41 disposed at the same height from the bottom surface 33 of the placement portion 31. . Here, the mobile phone 2, together with the surface 20 mounting in FIG. 3 is location mounting so as to abut against the bottom surface 33, outer surface 22b of the operation unit side body 21 Shi facing 41 side groups cradle-side terminal Placed.

As shown in FIG. 5, the cradle 3 includes a speaker (320 of FIG. 7) disposed therein, is disposed on the bottom wall portion 50, a plurality of sound waves to be output from the speaker 320 to the outside A speaker hole 51 is provided. The cradle 3 includes a holding member 32 that is disposed inside and holds the cradle-side terminal group 41. Reference numeral 55 denotes leg portions provided on the bottom wall portion 50 of the cradle 3, and four legs are provided at a predetermined interval, and a gap is provided between the desktop and the bottom wall portion 50 when placed on the table. Is supposed to form.

  As shown in FIG. 6, the holding member 32 is formed on the cradle side formed on the protrusions 40 arranged on one end side of the surface, the holding parts 45 and 46 holding the cradle side terminal group 41, and the holding parts 45 and 46. The terminal group 41 includes openings 45a and 46a projecting from the back surface side to the front surface side, and a rotating shaft 49 disposed on the side surface. As shown in FIG. 5, the holding member 32 is arranged in a state in which a rotation shaft 49 is pivotally supported by a bearing portion (not shown).

Cradle-side terminal group 41 is composed of a sound signal input terminal 41a, a control signal input terminal 41b, a power supply terminal 41c, and a ground receiving terminal 41d, by. The acoustic signal input terminal 41a and the control signal human power terminal 41b are disposed so as to protrude from the opening 45a, and the power supply terminal 41c and the ground receiving terminal 41d are disposed so as to protrude from the opening 46a. And in the cradle side terminal group 41, it is comprised so that the front-end | tip of the ground receiving terminal 41d may protrude most. Each terminal is formed so that a wire-like member is bent to protrude to one side, and a predetermined portion continuous with each terminal portion is wound around the outer periphery of the fixed shaft 53 in FIG. Be placed. Thereby, each terminal elastically deforms with the fixed shaft 53 as a fixed point, and functions as a so-called spring terminal.

  As shown in FIG. 6, the cradle-side terminal group 41 is arranged on the other end side with the protrusion 40 and the rotation shaft 49 interposed therebetween. The protrusion 40 and the cradle-side terminal group 41 in the holding member 32 are configured to be able to protrude from the inside of the cradle 3 to the outside (inside the placement portion 31). Specifically, as shown in FIG. 5, the protrusion 40 is disposed so as to protrude from the protrusion opening 40 formed on the bottom surface 33 of the concave mounting portion 31, and the cradle-side terminal group 41 is mounted on the mounting surface 31. It arrange | positions so that it can protrude from the opening group 410 for terminals formed in the side surface of the mounting part 31. FIG. Further, the holding member 32 is urged by an urging member (not shown) in a direction in which the protruding portion 40 protrudes from the bottom surface 33 of the placement portion 31.

  Here, the operation of the holding member 32 when the mobile phone 2 is placed on the cradle 3 will be described.

  First, the mobile phone 2 in a folded state shown in FIG. 3 is placed so as to be inserted into the concave placement portion 31 in the cradle 3, so that the placement surface 20 of the mobile phone 2 becomes the bottom surface of the placement portion 31. The projecting portion 40 that projects from 33 is pushed down to the inner side of the cradle 3. As a result, as shown in FIG. 6, the protrusion 40 side of the holding member 32 rotates about the rotation shaft 49 in the direction of arrow F1, and the opposite end of the protrusion 40 rotates in the direction of arrow F2. . By this turning operation, the cradle side terminal group 41 protrudes from the side surface of the placement unit 31 into the placement unit 31 and is electrically connected to the mobile phone side terminal group.

  FIG. 7 is a block diagram for explaining the electrical configuration of the acoustic apparatus 1 including the mobile phone 2 and the cradle 3.

As shown in FIG. 7, the acoustic apparatus 1 performs predetermined charge the cradle 3 is portable lightning talking device 2, an acoustic signal及beauty control signal is configured to be output from the cellular phone 2 on the cradle 3 The

  Specifically, the cellular phone 2 includes an antenna 205 that receives radio waves, a radio unit 210 that amplifies the received radio waves and demodulates the received radio data, and a battery 260. In addition, the mobile phone 2 includes display units 27 and 28, operation button groups 24 and 25, a storage unit 230, a playback unit 240 that converts predetermined music data into an acoustic signal, and a control 220 that controls them. And a speaker 250 that outputs an acoustic signal from the reproduction unit 240 to the outside as a sound wave.

The cradle 3 includes an amplifying unit 310 that amplifies low-frequency sound, one speaker 320 that outputs the acoustic signal amplified by the amplifying unit 310 to the outside as a sound wave, and supplies power to the amplifying unit 310 and a cellular phone. It comprises a power supply terminal 330 connected via the primary power supply and an AC adapter (not shown) for charging the 2.

The mobile phone 2 and the cradle 3 constituting the acoustic device 1 are electrically connected to the mobile phone side terminal group 61 and the cradle side terminal group 41. Specifically, the cellular phone 2, an acoustic signal output terminal 61a for outputting a sound signal from the reproducing unit 240, a control signal output terminal 61b to output the control signal for controlling the amplification section 310 from the control unit 220 The charging terminal 61c for charging a battery (not shown) and the ground terminal 61d are provided.

Cradle 3 includes a sound signal input terminal 41a for inputting a sound signal to the amplifier 310, and a control signal input terminal 41b to enter a control signal to the amplifier 310, electricity to the mobile phone 2 which is supplied from the power supply terminal 330 And a ground receiving terminal 41d.

Then, it is connected to the sound signal output terminal 61a and the audio signal input terminal 41a is electrically, the control signal output and input terminal 61b and a control signal input terminal 41b is electrically SeMMitsuru, charging terminal 61c and the feeding terminal 41c Are electrically connected, and the ground terminal 61d and the ground receiving terminal 41d are electrically connected. Thus, the cellular phone 2 acoustic signals及beauty control signal output from is entered in each amplification unit 310, the cradle 3, the amplifying unit 310 is controlled by the control signal, the amplified audio signal is a speaker 320 is output outward as a sound wave.

  Here, operation | movement of the audio equipment 1 is demonstrated based on the flowchart of FIG.

First, in step S1, by operating the inner operation board motor down group 24 of the portable phone 2 shown in FIG. 2, and select and determine a predetermined music from the music list displayed on the inner display unit 27, the cellular telephone 2, the music data stored in the storage unit 230 is converted into an acoustic signal by the playback unit 240 and emitted from the speaker 250.

  Next, in step S2, the cellular phone 2 is folded as shown in FIG. 3 and placed on the placement unit 31 of the cradle 3 as shown in FIG. In step S <b> 3, the placement surface 20 of the mobile phone 2 pushes down the protrusion 40 protruding from the bottom surface 33 of the placement portion 31. The cradle side terminal group 41 protrudes into the placement portion 31 by the projection 40 being pushed down.

In step S4, the ground receiving terminal 41d is first brought into contact with and electrically connected to the ground terminal 61d. Subsequently, in step S5, the audio signal input terminal 41a is electrically connected in contact with the acoustic signal output terminal 61a. At the same time, the control signal input terminal 41b is in contact electrically connected to the control signal output terminal 61b. At the same time, the power supply terminal 41c contacts and is electrically connected to the charging terminal 61c.

In step S6, the playback unit 240 under the action of the control unit 220 when the acoustic signal all registers is output to the amplifier 310 through an audio signal output terminal 61a, mid-high range by the filter function provided to the amplifier 310 Are cut, and only the low-frequency sound is amplified and output to the speaker unit 320.

By step S7, the sound signal in the middle / high range with high directivity is emitted from the speaker 250 on the mobile phone 2 side, and the sound signal in the low range with low directivity is emitted from the speaker 320 on the cradle 3 side. Here, the low sound range and the middle and high sound range can be divided on the basis of, for example, 1 kHz. The charging is also started in the battery 260 in the mobile phone 2 at step S8.

In step S9, the outer operation board motor down group 25 shown in FIG. 1, and select and determine with the music that is different from the piece of music being reproduced viewed outside the display unit 28, to change the music. Bass also changed music is sounded from the cradle 3 side of the speaker 320, mid-high range is emitted from the portable phone 2 side of the speaker 250.

In step S10, when separating the cellular phone 2 from the cradle 3, the audio signal input terminal 41a is separated from the audio signal output terminal 61a, a control signal input terminal 41b is separated from the control signal output terminal 61b by step S11 The power feeding terminal 41c is separated from the charging terminal 61c. In step S12, the ground receiving terminal 41d is finally separated from the ground terminal 61d.

In step S13, the reproduction section 240 under the action of the control unit 220 output the acoustic signals of all frequencies to the cellular phone 2 side of the speaker 250. As a result, the entire sound range of the music is emitted from the speaker 250 on the mobile phone 2 side.

According to the present embodiment, it is possible to provide the acoustic device 1 that includes the mobile phone 2 and the cradle 3 and outputs a control signal for controlling the amplification unit 310 of the cradle 3 from the mobile phone 2 to the cradle 3 side. Furthermore, electrical connection between the ground terminal 61d and a ground receiving terminal 41d is provided a composed acoustic device 1 to be made faster than the electrical connection between the control signal output terminal 61d and the control signal input terminal 41d can do. Accordingly, noise generation such as pop noise from the speaker 320 when the mobile phone 2 is placed on the cradle 3 can be suppressed, and it is not necessary to provide a control circuit for each sound range in the cradle 3. It can be simplified and downsized.

  Further, when the mobile phone 2 is placed on the cradle 3, the mid-high range with high directivity is emitted from the speaker 250 on the mobile phone 2 side, and the low range with low directivity is emitted from the speaker 320 on the cradle 3 side. Thus, the entire sound range can be covered, and a low-frequency sound that is insufficient with the small speaker 250 mounted on the mobile phone 2 can be sufficiently output. It is possible to realize the acoustic device 1 capable of outputting a sound having a noise.

  In addition, since only one speaker unit 320 is disposed on the cradle 3, the cradle 3 can be reduced in size and the acoustic device 1 can be provided at low cost.

  In addition, by configuring so as to emit a low sound area with low directivity from the speaker 320 of the cradle 3, the speaker 320 can be disposed so as to face the bottom wall portion 50 of the cradle 3, and a speaker hole is formed in the bottom wall portion 50. 51 can be provided. Thereby, the freedom degree of the design property in the cradle 3 is improved, and the sound can be outputted in all directions by emitting sound from the flat bottom wall portion 50. Moreover, the dust resistance and drip resistance of the cradle 3 are also improved.

  As mentioned above, although preferred embodiment of this form was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above.

1 shows an external perspective view of an acoustic device according to an embodiment of the present invention. The external appearance perspective view of the state which opened the mobile telephone is shown. The external appearance perspective view of the state which folded the portable thunder talk machine is shown. An oblique perspective view of the cradle is shown. It is a figure explaining the cross section in the cradle of FIG. It is a figure explaining the mechanism in which the cradle side terminal group in a cradle protrudes. It is a block diagram explaining the electrical structure of an audio equipment. It is a flowchart explaining operation | movement of an audio equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound apparatus 2 Mobile phone (mobile terminal device)
3 Cradle
20 mounting surface 21 operation unit side body 22 display unit side body 31 mounting portion 32 holding member 33 bottom 41a acoustic signal input terminal 41b control signal input terminal 41c feeding terminal 41d ground receiving terminals 50 bottom wall portion 55 leg 61a acoustic signal output terminal 61b a control signal output terminal 61c charging terminal 61d ground terminal 220 controller 250 speaker 310 amplifying unit 320 speaker 330 power supply terminal

Claims (8)

An acoustic device including a mobile terminal device and a table on which the mobile terminal device is placed,
The portable terminal device
A control unit, a storage unit for storing acoustic information, a reproducing unit for reproducing the acoustic information, a first speaker unit for emitting an acoustic signal output from the reproducing unit, and outputting the acoustic signal to the outside An output terminal;
The stand is
An input terminal, and a second speaker unit that emits only the low frequency sound of the acoustic signal input from the input terminal in contact with the output terminal,
The control unit is configured to emit a sound in a middle to high range from the first speaker unit while emitting only a low range sound from the second speaker unit.   The acoustic device according to claim 1, wherein the pedestal further includes an amplifying unit that amplifies only a low-frequency sound of the acoustic signal input from the input terminal.   The acoustic device according to claim 2, wherein the amplification unit is driven based on a control signal from the control unit received via the output terminal.   The pedestal further includes a leg portion that forms a gap between the bottom wall portion and the top surface of the table when placed on the tabletop, and a sound emitting hole of the second speaker unit. The acoustic device according to any one of claims 1 to 3. The cradle further includes a power supply terminal that receives power supply from the outside to the amplification unit,
5. The acoustic device according to claim 2 , wherein the mobile terminal device is supplied with electric power from the cradle via the output terminal. 6. The mobile terminal device further includes a ground terminal,
The said mounting base further has the ground receiving terminal formed so that it might protrude from the said output terminal in the direction facing the said portable terminal device at the time of mounting, It is any one of Claim 1 to 5 characterized by the above-mentioned. Sound equipment. A portable terminal device connected via an input terminal of a cradle,
A control unit;
A storage unit for storing acoustic information;
A playback unit for playing back the acoustic information;
A speaker unit that emits an acoustic signal output from the reproduction unit;
An output terminal for outputting the acoustic signal to the outside,
The control unit causes the speaker unit to emit a sound in a middle and high range while outputting the acoustic signal to the cradle through the input terminal that is in contact with the output terminal. Terminal device. A stand for charging through the output terminal of the mobile terminal device,
A power supply terminal to receive power supply from outside;
An input terminal connected to an output terminal of the mobile terminal device;
An amplifying unit for amplifying a low frequency sound of an acoustic signal output from the mobile terminal device and input via the input terminal;
A speaker unit that emits only the low frequency sound of the acoustic signal amplified by the amplifying unit during sound emission of the middle and high frequency range of the acoustic signal by the portable terminal device, and
The amplifying unit is driven based on a control signal input from the portable terminal device via the input terminal.

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