JP2010130106A - Radio communication terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain excellent communication quality by securely canceling echo, even when speech communication is available in a plurality of different styles. <P>SOLUTION: A display unit housing case 100 is slidably attached to an operation unit housing case 200. A microphone 302 is mounted on a reverse surface of a substrate 301. Furthermore, a receiver for outputting a reception speech is mounted on the top surface of the substrate 301. Namely, the microphone 302 and receiver are mounted on the different surfaces of the one substrate 301. A speech from outside the housing, such as a user's spoken speech, enters the gap between the display unit housing case 100 and operation unit housing case 200 from a sound collection hole 160. Then the speech having entered the gap between the two housing cases is input to the microphone 302 via a through-hole 305. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wireless communication terminal device.

  In general, some wireless communication terminal devices having a call function such as a mobile phone can change the shape between a non-call and a call. In other words, so-called foldable mobile phones, slide-type mobile phones, etc. are carried in a folded or contracted state when not in a call, thereby ensuring good portability and being expanded or extended during a call. As a result, it is possible to ensure convenience of calls and operations.

  The casing of such a wireless communication terminal device is usually divided into two casing cases, and the other casing case is movably connected to one casing case. That is, for example, in a slide type mobile phone, a display unit casing case including a display unit such as a display is slidably attached to an operation unit casing case including an operation unit such as a key. Therefore, the user can carry the wireless communication terminal device in a contracted state in which the operation unit housing case and the display unit housing case are completely overlapped during a non-calling operation, and extend by sliding the display unit housing case during a call. In this state, the keys of the operation unit housing case can be operated.

  However, if the call is completely impossible in the contracted state at the time of non-calling, for example, when receiving an incoming call, the call must be started after changing the shape of the wireless communication terminal device to the expanded state. It may interfere with the start of the call. Therefore, in recent years, many wireless communication terminal devices that can talk even in a contracted state have been commercialized. In such a wireless communication terminal device, in addition to the display unit, main operation keys and the like are provided in the display unit housing case, thereby enabling a minimum operation necessary for a call even in a contracted state. In addition, recently, by mounting a liquid crystal panel and a touch panel in a display unit housing case, as long as the display unit (that is, the liquid crystal panel) of the display unit housing case is visible, more in a contracted state. Operation is possible.

  When a call is made in a contracted state using such a wireless communication terminal device, the received voice output from the receiver provided in the display unit casing case is transmitted between the display unit casing case and the operation unit casing case. It is easy to input to a microphone provided in the operation unit housing case via a gap between them, and an echo is likely to occur. For this reason, it has been studied to provide a protrusion in the gap between the display unit case and the operation unit case to block the received voice output from the receiver.

JP 2006-135889 A

  In a wireless communication terminal device having a telephone call function, it is inevitable that the received voice output from the receiver is input to the microphone and some echo is generated. Especially, the performance of the microphone is improved and the sensitivity is improved. Echoes are likely to occur. Therefore, normally, a process of electrically canceling echo is executed, and most of the echo is erased and the speech quality is kept good.

  However, in the wireless communication terminal device that can talk in the contracted state and the expanded state as described above, the echo characteristics in the contracted state and the echo characteristics in the expanded state are different, and it is difficult to perform reliable echo cancellation. There's a problem. Specifically, the echo characteristics change because the distance between the receiver and the microphone is different between a call in the contracted state and a call in the extended state. For example, even if the echo can be canceled sufficiently in the contracted state, It is possible that the echo cannot be canceled sufficiently.

  That is, in the contracted state, the distance between the receiver provided in the display unit casing case and the microphone provided in the operation unit casing case is relatively small, but as the display unit casing case is slid, the receiver And the distance between the microphones increases. If the distance between the receiver and the microphone changes, the volume of the received voice that reaches the microphone changes, and the echo characteristics change. Therefore, uniform echo cancellation cannot reliably cancel echoes in the contracted state and the extended state.

  Such a problem occurs not only in a slide type mobile phone but also in a rotary type mobile phone in which a display unit housing case and an operation unit housing case are rotatably connected by a hinge, for example. In other words, in a wireless communication terminal device that can change the shape, if there are multiple shapes that can be used for communication, the echo characteristics may change in each shape, and there is a possibility that echo cancellation cannot be sufficiently performed in either shape. There is.

  The apparatus of the present disclosure has been made in view of the above points, and even when a call with a plurality of different shapes is possible, a radio communication terminal apparatus capable of canceling an echo and realizing a good call quality The purpose is to provide.

  In order to solve the above-described problem, a wireless communication terminal device includes a first casing including a display unit, and a second casing including an operation unit that is movably coupled to the first casing and receives a user operation. The first casing is a receiver that outputs a received voice that is received during a call, and a voice that is open toward the outside of the apparatus and that includes the received voice that is output by the receiver. The sound collecting unit that collects the sound and the microphone that acquires the sound collected by the sound collecting unit are employed.

  Thus, even if the first housing moves relative to the second housing, the distance between the receiver and the microphone does not change, and the incoming voice output from the receiver is input to the microphone. The echo characteristics do not change. As a result, if measures are taken for echoes whose characteristics do not change, echoes can be canceled and good call quality can be realized even when calls with a plurality of different shapes are possible.

  According to the wireless communication terminal device disclosed in the present specification, echo can be canceled and good call quality can be realized even when calls in a plurality of different shapes are possible.

  Hereinafter, embodiments of the apparatus of the present disclosure will be described in detail with reference to the drawings. In the following, the case where the present embodiment is applied to a slide-type mobile phone will be described. However, the present embodiment can be widely applied to a wireless communication terminal device having a plurality of callable shapes such as a rotary mobile phone. .

(Embodiment 1)
1 and 2 are perspective views showing an appearance of the wireless communication terminal device according to the first embodiment. The housing of the wireless communication terminal device shown in these drawings is largely divided into a display unit housing case 100 and an operation unit housing case 200. The display unit housing case 100 is attached to the operation unit housing case 200 so as to be slidable in the longitudinal direction. That is, when the display unit housing case 100 is slid in the longitudinal direction from the contracted state shown in FIG. 1, the extended state shown in FIG. 2 is obtained. And this radio | wireless communication terminal device can be talked in any shape of a contracted state and an expansion | extension state.

  As shown in FIGS. 1 and 2, the display unit case 100 is provided with a liquid crystal panel 110, an illuminance sensor 120, an incoming LED (Light Emitting Diode) 130, a sound generation hole 140, a camera 150, and a sound collection hole 160. It has been. The illuminance sensor 120, the incoming LED 130, and the camera 150 are mounted on the same substrate and stored in the display unit housing case 100. Further, as shown in FIG. 2, a plurality of operation keys 210 are arranged in the operation unit housing case 200 in an aligned manner.

  The liquid crystal panel 110 displays an image output as a result of processing by the wireless communication terminal device. Further, a touch panel (not shown) is attached to the back surface of the liquid crystal panel 110. When the user touches the front surface of the liquid crystal panel 110, the touch panel detects the contact position of the user and accepts an operation according to the detected contact position. . Specifically, for example, when there is an incoming call to the wireless communication terminal device, the liquid crystal panel 110 displays that the call is being received, and when the user touches the call start button displayed on the liquid crystal panel 110, the call start button is displayed. A touch is detected by the touch panel, and a call start process is executed.

  The illuminance sensor 120 measures ambient illuminance. The measured illuminance is used when appropriately controlling the brightness of the display screen of the liquid crystal panel 110. The incoming LED 130 repeats blinking, for example, when the wireless communication terminal apparatus receives an incoming call. In addition to repeatedly blinking the incoming LED 130, the wireless communication terminal device receives an incoming call to the user by outputting a ring tone from a speaker (not shown) or vibrating the casing by rotation of a motor (not shown). Notify you.

  The sound generation hole 140 is a through hole formed in the display unit casing case 100 in the vicinity of the receiver installed on the substrate, and generates a received voice output from the receiver to the outside of the display unit casing case 100. The receiver is mounted on the same substrate as the illuminance sensor 120, the incoming LED 130, and the camera 150 described above. The camera 150 executes an imaging process according to a user operation. For example, the image obtained by the imaging process is displayed on the liquid crystal panel 110 or stored in a recording medium (not shown).

  The sound collection hole 160 is a through-hole formed in the display unit housing case 100 in the vicinity of the microphone installed on the substrate, and collects sound outside the display unit housing case 100 and inputs it to the microphone. The sound collecting hole 160 is provided in the vicinity of the boundary between the display unit housing case 100 and the operation unit housing case 200, and the sound collected by the sound collecting hole 160 is a gap between the two housing cases. It reaches the microphone with the sound that enters. The microphone is mounted on the same substrate as the illuminance sensor 120, the incoming LED 130, and the camera 150 described above.

  That is, the microphone is mounted on the same substrate as the receiver, and the microphone and the receiver are housed inside the display unit housing case 100 together with the substrate. Therefore, even if the display unit case 100 is slid with respect to the operation unit case 200, the distance between the receiver and the microphone does not change, and the echo characteristics do not change. As a result, if the echo canceller can sufficiently cancel the echo in the contracted state, the echo in the expanded state can also be canceled sufficiently. Therefore, regardless of the shape of the wireless communication terminal device during a call, it is possible to sufficiently cancel the echo and improve the call quality.

  The operation key 210 can be pressed when the display unit housing case 100 is slid in the longitudinal direction to be extended, and accepts an operation by the user such as designation of a telephone number, for example. When an operation is accepted by the operation key 210, various processes corresponding to the operation are executed, and a necessary image is displayed on the liquid crystal panel 110.

  Next, the configuration around the microphone of the wireless communication terminal apparatus according to the present embodiment will be described with reference to FIG. FIG. 3 is a schematic diagram showing a cross section around the microphone when the wireless communication terminal device according to the present embodiment is in a contracted state. In the following description, the direction from the operation unit housing case 200 to the display unit housing case 100 in the contracted state is the upward direction, and the direction from the display unit housing case 100 to the operation unit housing case 200 is the downward direction. The direction.

  As shown in FIG. 3, a microphone 302 is mounted on the lower surface of the resin substrate 301. On the upper surface of the substrate 301, in addition to the illuminance sensor 120, the incoming LED 130, and the camera 150 shown in FIG. 1, a receiver that outputs received voice is mounted. That is, the microphone 302 is a surface facing the operation unit housing case 200 of the substrate 301 in order to efficiently collect sound entering the gap between the display unit housing case 100 and the operation unit housing case 200. To be implemented. On the other hand, the receiver is mounted on the surface of the substrate 301 facing the liquid crystal panel 110 so that the received voice can be heard clearly by reducing the distance from the user's ear. That is, the microphone 302 and the receiver are mounted on different surfaces of the same substrate 301.

  In addition, a bracket portion 304 is locked to the display unit housing case 100, and a microphone packing 303 serving as a buffer member is compressed and sandwiched between the microphone 302 and the bracket portion 304. The microphone packing 303 and the bracket portion 304 are provided with through holes 305 that allow the microphone 302 and the gap between the display unit housing case 100 and the operation unit housing case 200 to be conducted. The microphone packing 303 is made of, for example, a soft material having elasticity such as urethane rubber or silicon rubber. The microphone packing 303 is compressed and clamped by the microphone 302 and the bracket portion 304 to seal the periphery of the through hole 305.

  On the other hand, the sound collection hole 160 is formed near the boundary between the display unit housing case 100 and the operation unit housing case 200. Therefore, sound outside the housing, such as the user's speech, enters the gap between the display unit housing case 100 and the operation unit housing case 200 through the sound collection hole 160. The sound that has entered the gap between the two housing cases is input to the microphone 302 through the through hole 305. Here, since the microphone packing 303 is compressed and clamped by the microphone 302 and the bracket portion 304, the periphery of the through hole 305 is sealed, and sound is not diffused around the through hole 305. As a result, the sound collected by the sound collection hole 160 can reach the microphone 302 without waste.

  As described above, the receiver is also mounted on the substrate 301, and the received voice output from the receiver reaches the microphone 302. However, the positional relationship between the receiver and the microphone 302 does not change in the contracted state or the extended state. For this reason, the echo characteristic does not change depending on the shape of the wireless communication terminal device, and the echo generated when the received voice is input to the microphone 302 can be canceled reliably.

  As described above, according to the present embodiment, the wireless communication terminal device is divided into the operation unit housing case and the display unit housing case, and the display unit housing case is slidable with respect to the operation unit housing case. The microphone and the receiver are mounted on the substrate in the display unit housing case. For this reason, even if the display unit housing case is slid with respect to the operation unit crazy case, the positional relationship between the microphone and the receiver does not change, and the echo characteristics do not change. As a result, even when a call with a plurality of different shapes is possible, the echo can be canceled reliably and a good call quality can be realized.

(Embodiment 2)
In the first embodiment, since the microphone 302 and the receiver are mounted on different surfaces of the substrate 301, a space is formed above the substrate 301 in the vicinity where the microphone 302 is mounted. For this reason, in the vicinity where the microphone 302 is mounted, the substrate 301 is easily deformed into a shape warped upward, and the microphone 302 cannot sufficiently compress the microphone packing 303. Sealability may not be ensured. Therefore, in Embodiment 2 of the present invention, the microphone is mounted on the same surface as the receiver of the board, and a duct member for collecting sound is newly inserted, and the microphone packing is made stronger by the board and the duct member. A configuration for compression will be described.

  The external appearance of the wireless communication terminal apparatus according to the present embodiment is the same as the external appearance (FIGS. 1 and 2) of the wireless communication terminal apparatus according to Embodiment 1, and therefore description thereof is omitted. In the present embodiment, the structure around the microphone is different from that of the first embodiment.

  FIG. 4 is a schematic diagram showing a cross section around the microphone when the wireless communication terminal device according to the present embodiment is in a contracted state. In the figure, the same parts as those in FIG.

  In the present embodiment, a microphone 302 is mounted on the upper surface of the substrate 301, and a rib 403 protrudes above the microphone 302, and the vertical position of the microphone 302 is fixed by the rib 403. Yes. On the other hand, a through hole 301 a is formed in the substrate 301 below the microphone 302. The duct member 401 is fixed to the bracket portion 402 provided with the sound collection hole 160, and the microphone packing 303 is compressed and held between the upper surface of the duct member 401 and the lower surface of the substrate 301.

  As described above, since the microphone 302 fixed by the rib 403 is mounted on the upper surface of the substrate 301, no space is formed above the substrate 301, and the substrate 301 is not deformed into a shape warped upward. . Therefore, the substrate 301 can strongly compress the microphone packing 303 in contact with the lower surface. Further, in the present embodiment, a duct member 401 is inserted between the microphone packing 303 and the bracket portion 402. For this reason, there is no room above and below the microphone packing 303, and the microphone packing 303 can be compressed and clamped more strongly.

  In addition, a through-hole connected to the through-hole of the microphone packing 303 and the through-hole 301 a of the substrate 301 is formed on the upper surface of the duct member 401, and the duct member 401 is fixed to the bracket portion 402. A tubular duct that guides the sound collected by the sound hole 160 to the through hole of the duct member 401 is formed. The sound guided to the through hole of the duct member 401 is input to the microphone 302 through the through hole of the microphone packing and the through hole 301a of the substrate 301. For this reason, the sound collected by the sound collection hole 160 does not diffuse outside the duct, and the acoustic characteristics can be improved. The shape of the duct member 401 will be described in detail later.

  FIG. 5 is an assembly diagram showing the configuration around the microphone according to the present embodiment. As shown in the figure, the microphone 302 is mounted on the same surface as the receiver of the substrate 301, and the substrate 301 is stored in the display unit housing case 100. The display unit housing case 100 is attached to the operation unit housing case 200 so as to be slidable in the longitudinal direction.

  Further, the duct member 401 is fixed to the bracket portion 402 so that a groove portion provided on the lower side is connected to the sound collection hole 160. Thereby, a duct is formed by the groove portion of the duct member 401 and the upper surface of the bracket portion 402. The through hole formed in the upper surface of the duct member 401 is connected to the through hole of the microphone packing 303 and the through hole 301 a of the substrate 301. Further, the microphone 302 is mounted at a position where the through hole 301 a of the substrate 301 is blocked from the upper surface of the substrate 301. As a result, a sound path including the sound collection hole 160, the duct formed by the duct member 401, the through hole of the duct member 401, the through hole of the microphone packing 303, and the through hole 301a of the substrate 301 is formed. The sound collected by the signal reliably reaches the microphone 302.

  At this time, the microphone 302 is pressed from above by the rib 403, and accordingly, the microphone packing 303 is strongly compressed and sandwiched between the lower surface of the substrate 301 and the upper surface of the duct member 401. The nearby seal is secured, and there is no leakage of sound from the sound path. Therefore, the sound collected by the sound collection hole 160 is surely input to the microphone 302. Also in the present embodiment, as in the first embodiment, since the microphone 302 is mounted on the same substrate 301 as the receiver, the echo is transmitted regardless of whether the wireless communication terminal device is in a contracted state or an expanded state. The characteristics do not change. As a result, the call quality in the wireless communication terminal device can be improved.

  Next, the shape of the duct member 401 according to the present embodiment will be described with reference to FIGS. 6 and 7. 6 is a perspective view showing the upper shape of the duct member 401, and FIG. 7 is a perspective view showing the lower shape of the duct member 401. As shown in FIG.

  The duct member 401 is provided with a through hole 401a, and on the upper side, a compression part 401b for compressing and holding the microphone packing 303 with the lower surface of the substrate 301 protrudes from the periphery. In FIG. 6, the through hole 401a is formed in the compression part 401b. A groove 401c connected to the sound collection hole 160 is formed on the lower side of the duct member 401, and the through hole 401a is formed at one end of the groove 401c. Around the groove portion 401c, a fixing portion 401d for fixing the duct member 401 to the upper surface of the bracket portion 402 is formed.

  By fixing the fixing portion 401 d to the upper surface of the bracket portion 402, a tubular duct is formed by the groove portion 401 c and the upper surface of the bracket portion 402. One end of this duct is connected to the sound collecting hole 160, and the other end is connected to the through hole of the microphone packing 303 through the through hole 401a. Therefore, the duct formed by the duct member 401 can guide the sound collected by the sound collection hole 160 to the through hole of the microphone packing 303. The adhering portion 401d is bonded to the upper surface of the bracket portion 402 with, for example, a double-sided tape. For this reason, the airtightness of the duct is ensured, and no sound leaks from the duct to the surroundings.

  Moreover, since the compression part 401b has protruded upwards rather than the circumference | surroundings, the microphone packing 303 can be pinched strongly between the lower surfaces of the board | substrate 301. FIG. Furthermore, the duct member 401 is thicker than the surroundings in the compression portion 401b due to the protrusion of the compression portion 401b. And since the groove part 401c is formed in the back side of the compression part 401b, the groove part 401c can be deepened rather than forming in thin parts other than the compression part 401b. As a result, the cross-sectional area of the duct is increased, and the sound transmission efficiency can be improved.

  As described above, according to the present embodiment, the microphone is mounted on the same surface as the receiver of the substrate, the through-hole is formed in the microphone mounting portion of the substrate, and the microphone and the substrate are pressed by the ribs. The microphone packing is compressed and sandwiched between the surface of the substrate on which the microphone and receiver are not mounted and the duct member. For this reason, even if force is applied to a board | substrate by compression with respect to microphone packing, a board | substrate and a duct member can compress and clamp microphone packing more strongly, without a board | substrate deform | transforming. As a result, the sealing property of the sound path through which the sound input to the microphone passes can be improved, and the acoustic characteristics can be improved.

  In the second embodiment, the configuration in which the duct member 401 is provided separately from the bracket portion 402 has been described. However, the display unit housing case is formed by a bracket member having a shape in which the bracket portion 402 and the duct member 401 are integrated. The vicinity of 100 sound collecting holes may be formed. That is, when the cushioning member is disposed between the sound collection hole opened in the display unit housing case 100 and the microphone, a part of the display unit housing case 100 is raised from the periphery, and The inside may function as a duct that guides sound from the sound collecting hole, and the outside of the raised portion may function as a compression unit that compresses the buffer member.

  Regarding the above embodiment, the following additional notes are disclosed.

(Supplementary note 1) a first housing having a display unit;
A second casing that is movably coupled to the first casing and includes an operation unit that receives a user operation;
The first housing is
A receiver that outputs a received voice received during a call;
A sound collection unit that opens toward the outside of the device and collects sound around the device including the received sound output by the receiver;
A wireless communication terminal apparatus, comprising: a microphone that acquires sound collected by the sound collection unit.

(Appendix 2) The first housing is
The wireless communication terminal apparatus according to appendix 1, further comprising a substrate on which the receiver is mounted on one surface and the microphone is mounted on the other surface.

(Supplementary note 3)
Forming the opening in a part of the first housing, and a bracket portion formed with a through hole for guiding sound entering from the opening toward the microphone;
The wireless communication device according to claim 2, further comprising: a buffer portion sandwiched between the bracket portion and the microphone, connected to a through hole formed in the bracket portion, and formed with a through hole at a position in contact with the microphone. Communication terminal device.

(Appendix 4) The first housing is
The wireless communication terminal apparatus according to appendix 1, further comprising a substrate on which the receiver and the microphone are mounted on the same surface.

(Appendix 5) The microphone is
The wireless communication terminal apparatus according to appendix 4, wherein the wireless communication terminal apparatus is mounted at a position that closes a through hole formed in the substrate.

(Supplementary note 6)
Forming the opening in a part of the first housing, and a bracket portion formed with a through hole for guiding sound entering from the opening toward the microphone;
Appendix 5 characterized by having a through-hole sandwiched between the bracket portion and the substrate and formed with a through-hole formed in the bracket portion and a through-hole connected to the through-hole formed in the substrate. Wireless communication terminal device.

(Appendix 7) The bracket portion is
7. The radio according to claim 6, further comprising a through-hole that guides the sound entering from the opening toward the microphone and a duct member that compresses the buffer portion by a surface around the through-hole. Communication terminal device.

(Appendix 8) The duct member is
A fixing portion fixed to the inner surface of the first housing;
A compression part that rises from the periphery and thickens, and compresses the buffer part by a compression surface that abuts the buffer part when the fixing part is fixed to the inner surface of the first housing;
8. The wireless communication terminal device according to appendix 7, wherein a groove portion is provided on a surface opposite to the compression surface of the compression portion, and has a groove portion formed with a through hole connected to the through hole of the buffer portion at one end.

1 is a diagram illustrating an appearance of a wireless communication terminal device according to Embodiment 1. FIG. 5 is a diagram showing another appearance of the wireless communication terminal device according to Embodiment 1. FIG. 3 is a schematic diagram showing a cross section around the microphone according to Embodiment 1. FIG. 6 is a schematic diagram showing a cross section around a microphone according to Embodiment 2. FIG. FIG. 6 is an assembly diagram illustrating a configuration around a microphone according to a second embodiment. It is a perspective view which shows the upper side shape of the duct member which concerns on Embodiment 2. FIG. 6 is a perspective view showing a lower shape of a duct member according to Embodiment 2. FIG.

Explanation of symbols

100 Display Case 110 Liquid Crystal Panel 120 Illuminance Sensor 130 Incoming LED
140 Sound generation hole 150 Camera 160 Sound collection hole 200 Operation part housing case 210 Operation key 301 Substrate 301a Through hole 302 Microphone 303 Microphone packing 304, 402 Bracket part 305 Through hole 401 Duct member 401a Through hole 401b Compression part 401c Groove part 401d Adhering part 403 ribs

Claims (5)

A first housing having a display unit;
A second casing that is movably coupled to the first casing and includes an operation unit that receives a user operation;
The first housing is
A receiver that outputs a received voice received during a call;
A sound collection unit that opens toward the outside of the device and collects sound around the device including the received sound output by the receiver;
A wireless communication terminal apparatus, comprising: a microphone that acquires sound collected by the sound collection unit. The first housing is
The wireless communication terminal device according to claim 1, further comprising a substrate on which the receiver and the microphone are mounted on the same surface. The microphone is
The wireless communication terminal device according to claim 2, wherein the wireless communication terminal device is mounted at a position that closes a through hole formed in the substrate. The sound collector is
Forming the opening in a part of the first housing, and a bracket portion formed with a through hole for guiding sound entering from the opening toward the microphone;
4. A shock absorber having a through hole formed between the bracket portion and the substrate and formed with a through hole formed in the bracket portion and a through hole connected to the through hole formed in the substrate. The wireless communication terminal device described. The bracket portion is
The through-hole which guides the sound which approachs from the said opening toward the said microphone is formed, and it has a duct member which compresses the said buffer part with the surface around the said through-hole. Wireless communication terminal device.

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