JP2011205289A - Telephone communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telephone communication deice by which a telephone call is performed without minding the direction.SOLUTION: Voice is collected by each of a first sound collection part, a second sound collection part, and volume values are compared with each other. Then, the sound collection part, which collects voice with larger volume value, is determined, and the determined sound collection part is set so that the voice can be collected. A sound emission part on the same side as that of the sound collection part, by which the larger voice is not collected, is set so that the sound can be emitted.

Description

  The present invention relates to a call device.

  2. Description of the Related Art Conventionally, a communication device is known in which a speaker is provided on the upper side of an operation unit directed to the user's face side and a microphone is provided on the lower side. With respect to this type of communication device, Patent Document 1 discloses a mobile phone 1 in which a speaker 6 is provided on the upper side of the upper housing 2 and two microphones 8a and 8b are provided in parallel on the lower side of the lower housing 4. Has been.

JP2008-227775A

Problems to be solved by the invention

  However, in the communication device including the above-described mobile phone 1 and having a speaker on the upper side of the device main body and a microphone on the lower side, particularly when the upper and lower designs are targeted or used in the dark, In some cases, it was difficult to determine which was the upper side and which was the lower side. For this reason, there is a case where the user starts a call with the call device upside down.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a call device capable of making a call without worrying about the direction.

  As a means for achieving the above object, a communication device according to the invention of claim 1 is provided on one end side in the longitudinal direction of one side surface, and includes a first sound collecting unit that collects sound, A first sound emitting portion that emits sound, provided on one end side in the longitudinal direction, a second sound collecting portion that is provided on the other end side in the longitudinal direction of the one side surface, and collects sound; A second sound emitting unit provided on the other end side in the longitudinal direction and emitting a sound; a volume value storing unit for storing a volume value of the sound collected by the first sound collecting unit and the second sound collecting unit; , One of the first sound collecting unit and the second sound collecting unit can be set to collect sound, and one of the first sound emitting unit and the second sound emitting unit can emit sound. And the sound collection setting unit sets the first sound collection unit to be capable of collecting sound, and the sound emission setting unit sets the second sound emission. Is set so that sound can be emitted, and the first sound volume is controlled so that the first sound volume value, which is the sound volume value of the sound collected by the first sound collecting section, is stored in the sound volume value storing section. After the value storage control unit and the sound collection setting unit set the second sound collection unit to collect sound, and the sound emission setting unit sets the first sound emission unit to emit sound, the second sound collection unit A second volume value storage control unit for performing control so that a second volume value, which is a volume value of the sound collected by the sound collection unit, is stored in the volume value storage unit; and the first volume value storage unit The volume value comparison unit for determining which of the first volume value and the second volume value stored is greater, and the volume value comparison unit determines that the first volume value is greater than the second volume value. In this case, the first sound collection unit can be collected by the sound collection setting unit, and the second sound emission unit can be emitted by the sound emission setting unit. When the first setting control unit and the volume value comparison unit determine that the second volume value is greater than the first volume value, the second sound collection unit is collected in the sound collection setting unit. The sound emission setting section includes a second setting control section that allows the first sound emission section to be soundable so that sound can be emitted.

  According to a second aspect of the present invention, in the telephone device according to the first aspect, a first storage unit that stores a first threshold value, and a volume value difference that is a difference between the first volume value and the second volume value. A volume value difference calculating unit for calculating, and a first threshold value comparing unit for determining whether the volume value difference is equal to or greater than the first threshold value, wherein the first threshold value comparing unit includes: When it is determined that the volume value difference is greater than or equal to the threshold value, the volume value comparison unit makes a determination.

  According to a third aspect of the present invention, in the call device according to the first or second aspect, the first sound collection unit or the second sound collection unit set by the sound collection setting unit is stored, and the sound emission setting unit is The setting information storage unit that stores the set first sound emission unit or the second sound emission unit and the first sound collection unit or the second sound collection unit that is stored in the setting information storage unit when a call is started And a third setting control unit configured to cause the sound collection setting unit to set the first sound emission unit or the second sound emission unit stored in the setting information storage unit to the sound emission setting unit. And

  According to a fourth aspect of the present invention, in the communication device according to any one of the first to third aspects, the second storage unit that stores a second threshold value and the first, second, or third setting control. The sound collected by the first sound collection unit or the second sound collection unit set by the sound collection setting unit so that sound collection is possible after the sound collection setting unit and the sound emission setting unit are set by the unit A second threshold value comparing unit that determines whether or not a third volume value that is the volume value of the second value is equal to or greater than the second threshold value. When it is determined that the volume value is less than the threshold value, the first volume value storage control unit and the second volume value storage control unit execute control.

<Invention of Claim 1>
According to the present invention, sound is collected by each of the first sound collection unit and the second sound collection unit, and the volume values are compared. Then, the sound collecting unit that collects the sound having a larger volume value is determined, and the determined sound collecting unit is set to be able to collect sound. The sound emitting unit on the same side as the sound collecting unit on which no loud sound is collected is set to be able to emit sound. Therefore, the user can start a call without worrying about the direction of the call device.

<Invention of Claim 2>
According to the present invention, when the volume value difference is determined to be greater than or equal to the first threshold value, the volume value comparison unit makes a determination, so that the volume comparison is performed only when the voice uttered by the user is collected. Judgment by the department will be made. That is, the reliability of the determination performed by the volume value comparison unit is increased.

<Invention of Claim 3>
According to the present invention, the sound collection unit that is set to be able to collect sound at the time of the previous call and the sound emission unit that is set to be able to emit sound are stored, and are stored when the call is started. The sound collection unit is set to be able to collect sound, and the sound emission unit is set to be able to emit sound. When a user starts a call again immediately after ending the call, the user often starts the call with the call device in the same direction as the previous call. Therefore, the call device according to claim 3 has an effect of increasing convenience when starting a call.

<Invention of Claim 4>
According to the present invention, even after the sound collection unit and the sound emission unit are once set, it is determined whether the volume value of the sound collected from the set sound collection unit is larger than the second threshold value, and is small. In this case, the sound is acquired again by the first sound collection unit and the second sound collection unit. Then, based on the volume value of the acquired sound, the sound collecting unit determined to be able to collect sound is set to be able to collect sound, and the sound emitting unit determined to be able to emit sound is set to be able to emit sound. Therefore, even if the user turns the call device upside down during a call, the call can be continued normally.

(A) is an external perspective view of a mobile phone, and (b) is an external front view of the mobile phone. It is a block diagram which shows the electric constitution of a mobile telephone. It is a flowchart which shows the process in which a microphone and a speaker are set (1st Embodiment). It is a flowchart which shows the process in which a microphone and a speaker are set (2nd Embodiment). It is a flowchart which shows the process in which a microphone and a speaker are set (3rd Embodiment).

(First embodiment)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. A mobile phone 1 shown in FIG. 1 is a device capable of making a call with a counterpart device connected via a base station 100, and can particularly make a call without worrying about the direction of the receiving side and the transmitting side. Is.

  The casing of the mobile phone 1 is formed in a flat box shape, and one side surface thereof is formed as an operation surface 1a facing the user's face side. The operation surface 1a is provided with an LCD 2 at the center thereof, the first hole 3 on one end side (upper side in the figure), and the other end side (lower side in the figure) sandwiching the LCD 2 between the first hole 3. A second hole 4 is formed. The operation surface 1a including the LCD 2, the first hole 3, and the second hole 4 is designed to be vertically and horizontally symmetrical.

  The LCD 2 displays various images. For example, numeric buttons “0” to “9”, a power button, a call button, a call button, and the like are displayed as the various images. Further, a touch panel 5 which is a kind of input device is disposed on the display surface of the LCD 2. When the user touches an area of the LCD 2 on which an image is displayed with a finger, each process corresponding to the image displayed on the area is executed.

  The first hole 3 is a hole for emitting or collecting sound, and the mobile phone 1 includes a first speaker 6a (see FIG. 2) and a second microphone 7a (see FIG. 2). Has been.

  The second hole 4 is a hole for emitting or collecting sound, and the mobile phone 1 includes a second speaker 6b (see FIG. 2) and a first microphone 7b (see FIG. 2). Has been.

  The first microphone 7b and the second microphone 7a convert the collected sound into an analog electric signal. The first speaker 6a and the second speaker 6b emit sound based on the input analog electric signal.

  The second microphone 7a is the first sound collecting unit of the present invention, the second microphone 7a is the second sound collecting unit of the present invention, and the first speaker 6a is the first sound collecting unit of the present invention, the second speaker 6b. Is the second sound collecting section of the present invention.

  FIG. 2 is a block diagram showing an electrical configuration of the mobile phone 1. In the mobile phone 1, the CPU 9, the ROM 10, the RAM 11, the display control unit 12, the touch detection unit 13, the shared machine 8, the first voice control unit 15, the second voice control unit 16, and the third speaker 17 are connected to the input / output port 18. Are connected to each other.

  The CPU 9 controls each function of the cellular phone 1 and connects to the input / output port 18 according to fixed values and programs stored in the ROM 10 and the RAM 11 or various data transmitted and received via the shared machine 8. Control each part.

  The ROM 10 is a non-rewritable memory that stores a control program executed by the mobile phone 1.

  The RAM 11 is a rewritable volatile memory, and temporarily stores various data when each operation of the mobile phone 1 is executed.

  The display control unit 12 performs control to display various images on the LCD 2 in accordance with instructions from the CPU 9.

  When the touch panel 5 is touched by the user, the touch detection unit 13 acquires position information of the touched area.

  The second audio control unit 16 is connected to the first microphone 7b or the second microphone 7a via the connection control unit 20. The sound collected by the first microphone 7a or the second microphone 7b is sent to the second sound control unit 16 via the connection control unit 20 as an analog electric signal. The second audio control unit 16 performs A / D conversion on the analog electrical signal, converts it into digital data, and further encrypts the digital data with a predetermined encryption key to obtain encrypted data. The digital data includes information such as sound volume and pitch, for example. The encrypted data is sent to the shared machine 8 via the input / output port 18.

  The first audio control unit 15 is connected to the first speaker 6a or the second speaker 6b via the connection control unit 19. The encrypted data sent from the shared machine 8 via the input / output port 18 is decrypted with a predetermined encryption key to obtain digital data, and the digital data is further D / A converted to obtain an analog electric signal. The obtained analog electric signal is sent to the first speaker 6a or the second speaker 6b via the connection control unit 19. The first speaker 6a or the second speaker 6b emits sound based on the analog electrical signal that has been sent.

  The shared machine 8 is connected to the antenna 14. The shared machine 8 modulates the encrypted data sent from the second voice control unit 16 and transmits it to the base station via the antenna. Furthermore, the shared device 8 demodulates the modulation data received from the base station 100 via the antenna 14 and sends it to the first voice control unit 15.

  The third speaker 17 is installed on the side surface facing the operation surface 1a (see FIG. 1), and emits a predetermined sound.

  The connection control unit 19 is a relay circuit controlled by the CPU 9 via the bus line 19 a and the input / output port 18. The connection control unit 19 connects the circuit so that the analog electrical signal input from the first audio control unit 15 is output to either the first speaker 6a or the second speaker 6b according to the control of the CPU. The connection control unit 19 corresponds to the sound emission setting unit of the present invention.

  The connection control unit 20 is a relay circuit controlled by the CPU 9 via the bus line 20 a and the input / output port 18. Under the control of the CPU 9, the connection control unit 20 connects the circuit so that the analog electric signal transmitted from the first microphone 7 b or the second microphone 7 a is input to the second sound control unit 16. The connection control unit 20 corresponds to the sound emission setting unit of the present invention.

  The operation of the mobile phone 1 when a call is made will be described. The mobile phone 1 transmits the collected sound as a signal to the other party and sends it to the other party, and receives the voice to be emitted based on the signal sent from the other party. Here, transmission and the operation of the mobile phone 1 when performing reception will be described in order.

  An operation performed by the mobile phone 1 when transmitting a voice will be described. The first microphone 7b or the second microphone 7a collects the sound emitted by the user. The second microphone 7 a sends the collected sound as an analog electric signal to the second sound control unit 16 via the connection control unit 20. The second audio control unit 16 performs A / D conversion on the sent analog electric signal, encrypts it, and converts it into encrypted data. The encrypted data is sent to the shared machine 8 via the input / output port 18. The shared device 8 modulates the encrypted data and transmits it to the base station 100 via the antenna 14.

  An operation performed by the mobile phone 1 when receiving a call will be described. The shared machine 8 receives the modulated data via the antenna 14. The received modulated data is demodulated by the shared machine 8 and sent to the first voice control unit 15 as encrypted data. The first voice control unit 15 decrypts the sent encrypted data, and then D / A converts it into an analog electrical signal. The analog electrical signal is sent to the first speaker 6a or the second speaker 7a via the connection control unit 19. The first speaker 6a or the second speaker 7a emits sound based on the analog electrical signal that has been sent. Thus, the user can make a call by the mobile phone transmitting and receiving.

  Hereinafter, the first embodiment will be described with reference to a flowchart. FIG. 3 is a flowchart showing a process of selecting and connecting a microphone that collects sound and sends it to the second sound control unit 16 as an analog electric signal and a speaker to which the analog electric signal is input. is there. This process is executed when a call is started using the mobile phone 1. The call may be started either when the mobile phone 1 receives an incoming call or when the mobile phone 1 makes a call.

  The CPU 9 instructs the connection control unit 20 to connect the second microphone 7a and the connection control unit 19 to connect the second speaker 6b and the circuit. Upon receiving a command from the CPU 9, the connection control unit 20 connects circuits of the second audio control unit 16, the connection control unit 20, and the second microphone 7a. On the other hand, the connection control unit 19 connects the circuits of the second speaker 6b, the connection control unit 19, and the first audio control unit 15 (S301). By connecting the circuits in this way, an analog electric signal from the second microphone 7 a is sent to the second sound control unit 16. Then, the analog electric signal from the first sound control unit 15 is sent to the second speaker 6b. It is described that the circuit is connected in this way when the second microphone 7a and the second speaker 6b are turned on.

  The analog electric signal sent from the second microphone 7a is A / D converted by the second sound control unit 16 and becomes digital data. The CPU 9 extracts a volume value from the digital data and stores it in the RAM 11 (S302). The volume value may be obtained by extracting information indicating the volume from an analog electric signal before A / D conversion and digitizing it, or obtained from digital data after A / D conversion.

  The CPU 9 instructs the connection control unit 20 to connect the first microphone 7b and the connection control unit 19 to connect the first speaker 6a and the circuit. Upon receiving a command from the CPU 9, the connection control unit 20 connects circuits of the second audio control unit 16, the connection control unit 20, and the first microphone 7 b. On the other hand, the connection control unit 19 connects the circuits of the first speaker 6a, the connection control unit 19, and the first audio control unit 15 (S303). By connecting the circuits in this way, an analog electric signal from the first microphone 7 b is sent to the second sound control unit 16. Then, the analog electric signal from the first sound control unit 15 is sent to the first speaker 6a (S303). It is described that the circuit is connected in this way when the first microphone 7b and the first speaker 6a are turned on.

  By connecting the circuits as shown in S303, the first microphone 7b collects sound. Therefore, the CPU 9 acquires the volume value of the sound collected by the first microphone 7b from the second sound control unit 16 and stores it in the RAM 11 (S304). Of course, the volume value may be data obtained by either method described in paragraph 0029.

  The RAM 11 in S302 and S304 corresponds to the volume value storage unit of the present invention. The volume value stored in the RAM 11 in S302 corresponds to the first volume value, and the volume value stored in the RAM 11 in S304 corresponds to the second volume value. Further, the CPU 9 when performing the flow of S301 and S302 corresponds to the first volume value storage control unit, and the CPU 9 when performing the flow of S303 and S304 corresponds to the second volume value storage control unit.

  In the previous steps, the RAM 11 stores both the volume value of the sound collected by the first microphone 7b and the volume value of the sound collected by the second microphone 7a. The CPU 9 calculates the difference between the larger value and the smaller value of the two volume values stored in the RAM 11 (S305). The CPU 9 in S305 corresponds to the volume value difference calculation unit of the present invention, and the difference calculated at this time corresponds to the volume value of the present invention.

  The CPU 9 determines whether or not the difference between the volume values calculated in S305 is greater than or equal to a threshold value (S306). The threshold value is stored in advance in the ROM 10 as a numerical value such as “60 dB”. The CPU in S306 corresponds to the first threshold value comparison of the present invention, and the threshold value used at this time corresponds to the first threshold value of the present invention. Furthermore, the ROM 10 storing this threshold corresponds to the first storage unit.

  When the difference between the volume values is less than the threshold value (S307 / No), the process proceeds to S311.

  In S311, the CPU 9 determines whether or not the call has ended (S311). If it is determined that the call has ended (S311: Yes), this process ends. On the other hand, if it is determined that the call has not ended (No at S311), the process returns to S301 at the beginning of this flowchart.

  When the difference between the volume values is equal to or greater than the threshold value (S306 / Yes), the process proceeds to S307.

  In S307, the CPU 9 determines whether or not the volume value of the sound collected by the second microphone 7a is larger than the volume value of the sound collected by the first microphone 7b (S307).

  When the volume value of the sound collected by the second microphone 7a is larger (S307 / Yes), the process proceeds to S308.

  In S308, the CPU 9 instructs the connection control unit 19 to connect the second microphone 7a and the connection control unit 20 to connect the second speaker 6b and the circuit. Upon receiving a command from the CPU 9, the connection control unit 20 turns on the second microphone 7a, and the connection control unit 19 turns on the second speaker 6b (S308). Then, the process proceeds to S309. The CPU 9 in S308 corresponds to the first setting control unit of the present invention.

  On the other hand, when the volume value of the audio signal collected by the first microphone 7b is larger (No in S307), the process proceeds to S309. In S307 · No, the reason for proceeding directly to S309 is that in S305, the connection control unit 20 and the connection control unit 19 turn on the first microphone 7b and the first speaker 6a. Therefore, the process performed by the second setting control unit of the present invention corresponds to the CPU 9 when directly proceeding from S307 to S309.

  Again, the CPU 9 acquires the volume value of the sound collected by the microphone from the second sound control unit 16, and stores it in the RAM 11 (S309). The microphone from which the sound is collected is the second microphone 7a if Yes in S307 in the previous step, and the first microphone 7b if No. Note that the sound stored in the RAM 11 at this time corresponds to the third volume value of the present invention.

  Subsequently, the CPU 9 determines whether or not the volume value stored in the RAM 11 in S309 is greater than or equal to a threshold value (S310). This threshold value is used in S306. Further, different values may be stored in the ROM 10 and used. The threshold value used at this time corresponds to the second threshold value of the present invention, and the ROM 10 storing this threshold value corresponds to the second storage unit. Further, the CPU 9 in S310 corresponds to the second threshold value comparison unit.

  If it is determined that the volume value is equal to or greater than the threshold value (Yes in S310), the process returns to S309 again to acquire the volume value. Then, the process proceeds to S310, where it is determined whether the acquired volume value is equal to or greater than a threshold value.

  When it is determined that the volume value is less than the threshold value (No in S310), the process proceeds to S311. The CPU 9 determines whether or not the call has ended (S311). If the call is terminated (S311, Yes), this process is terminated. On the other hand, if the call has not ended (S311 No), the process returns to the beginning of this flowchart.

  Further, S301 to S304 may be performed in the order of S303, S304, S301, and S302. In this case, in S307, if Yes, the process proceeds directly to S309. And when it is No, it progresses to S308. Further, S308 is a step of turning on the first microphone 7b and the first speaker 6a. The CPU 9 in S308 corresponds to the second setting control unit of the present invention, and the CPU 9 when directly proceeding from S307 to S309 corresponds to the first setting control unit of the present invention.

  As described above, in the mobile phone 1, sounds are collected by the first microphone 7b and the second microphone 7a, and the volume values are compared. Then, the microphone that collects the sound with the higher volume value is determined, and the circuit is connected so that the analog electrical signal sent from the determined microphone is sent to the second sound control unit 16. . A circuit is connected so that an analog electrical signal is sent to a speaker built in the same side as the microphone on which no loud sound has been collected. Therefore, the user can start a call without worrying about the top and bottom of the mobile phone.

  Even after the microphone and speaker are set once, it is determined whether the volume value of the sound collected from the set microphone is larger than the threshold value, and if it is smaller, the microphone and speaker are set again. Therefore, even if the user turns the mobile phone 1 upside down during the call, the call can be continued normally.

(Second Embodiment)
Next, a second embodiment will be described. An external perspective view, an external front view, and a block diagram showing an electrical configuration are the same as those in the first embodiment, and only a flowchart showing processing is different. Specifically, in the first embodiment, the CPU 9 repeatedly changes the settings of the microphone and the speaker until the call ends after the call starts. On the other hand, in the second embodiment, once the CPU 9 sets the microphone and speaker to ON, the CPU 9 maintains the settings until the call ends. The timing at which this process is started is the same as in the first embodiment. Hereinafter, a description will be given with reference to FIG.

  S401 to S406 are the same as S301 to S306 of the first embodiment. Further, S407 is the same as S311, S408 is the same as S307, and S409 is the same as S308. Therefore, explanation is omitted.

  When the process proceeds from S409 to S410, in S410, the CPU 9 determines whether or not the call is finished (S410). If it is determined that the call has not ended (No at S410), the determination is repeated again at S410. If it is determined that the call has ended (S410: Yes), this process ends.

  As described above, in the second embodiment, sound is collected by each of the first microphone 7b and the second microphone 7a, and the volume values are compared. Then, the microphone that collects the sound with the higher volume value is determined, and the circuit is connected so that the analog electrical signal sent from the determined microphone is sent to the second sound control unit 16. . A circuit is connected so that an analog electrical signal is sent to a speaker built in the same side as the microphone on which no loud sound has been collected. Therefore, the user can start a call without worrying about the top and bottom of the mobile phone.

(Third embodiment)
Next, a third embodiment will be described. An external perspective view, an external front view, and a block diagram showing an electrical configuration are the same as those in the second embodiment, and only a flowchart showing processing is different. Specifically, the microphone and speaker that were turned on at the previous call are stored in the RAM, and the contents stored in the RAM are read. Then, in the initial stage of processing, the point that the microphone and the speaker that were turned on at the previous call are turned on is different from the second embodiment. The timing at which this process is started is the same as in the second embodiment. Hereinafter, a description will be given with reference to FIG.

  CPU9 reads the setting information at the time of the last call memorize | stored in RAM11 (S501). This setting information refers to which of the second microphone 7a and the first microphone 7b was set to ON during the previous call, and which of the first speaker 6a and the second speaker 6b was set to ON. This is information indicating whether or not.

  Next, the process proceeds to S502. In S502, the CPU 9 determines whether or not setting information for the previous call is stored in the RAM 11 (S502).

  If it is determined in S502 that the setting information for the previous call is not stored (No in S502), the process proceeds to S504. On the other hand, if it is determined in S502 that the setting information for the previous call is stored (S502: Yes), the process proceeds to S503.

  In S503, the CPU 9 determines whether or not the second microphone 7a and the second speaker 6b were on during the previous call (S503). When it is determined that the second microphone 7a and the second speaker 6b are on (S503 / Yes), the process proceeds to S504, while when it is determined that the first microphone 7b and the first speaker 6a are on (S503, No), the process proceeds to S506.

  In S504, upon receiving a command from the CPU 9, the connection control unit 20 and the connection control unit 19 turn on the second microphone 7a and the second speaker 6b (S504). Then, the process proceeds to S505.

  In S505, the CPU 9 acquires the volume value of the sound collected by the second microphone 7a from the second sound control unit 16, and stores it in the RAM 11 (S505). Then, the process proceeds to S508.

  In S506, upon receiving a command from the CPU 9, the connection control unit 20 and the connection control unit 19 turn on the first microphone 7b and the first speaker 6a (S506). Then, the process proceeds to S507.

  In S507, the CPU 9 acquires the volume value of the sound collected by the first microphone 7b from the second sound control unit 16, and stores it in the RAM 11 (S507). Then, the process proceeds to S508.

  In S508, the CPU 9 determines whether or not the volume value stored in the RAM 11 is greater than or equal to a threshold value (S508). The volume value stored in the RAM 11 is the volume value stored in the previous step (S505 or S507). Further, the threshold value is stored in advance in the ROM 10 as a numerical value such as “60 dB” as in the first and second embodiments. If it is determined that the volume value stored in the RAM 11 is equal to or greater than the threshold value (S508 / Yes), the process proceeds to S509. When it is determined that the volume value stored in the RAM 11 is less than the threshold value (No in S508), the process proceeds to S511.

  In S509, the CPU stores in the RAM 11 which microphone and speaker is currently turned on (S509). Here, the information stored in the RAM 11 is read in S501 when the next process is executed. Then, the process proceeds to S510.

  In S510, the CPU 9 determines whether or not the call is finished (S510). If it is determined that the call has ended (S510: Yes), this process ends. If it is determined that the call has not ended (S510: No), the process returns to S510 and repeats the determination.

  On the other hand, in S511, the CPU determines whether or not the call has ended (S511). If it is determined that the call has ended (S511: Yes), this process ends. On the other hand, if it is determined that the call has not ended (S511, No), the process proceeds to S512. Since S512 to S516 are the same as S401 to S405 of the second embodiment, description thereof will be omitted.

  After S516, the process proceeds to S517. In S517, the CPU 9 determines whether or not the difference between the volume values calculated in S516 is greater than or equal to a threshold value (S517). The threshold value is stored in advance in the ROM. And it is the same value as the threshold value used in S508. A configuration different from S508 may be used. If it is determined that the threshold value is exceeded (S517, Yes), the process proceeds to S518. On the other hand, if it is determined that the value is less than the threshold value (No in S517), the process proceeds to S511 again.

  In S518, the CPU 9 determines whether or not the volume value of the sound collected by the second microphone 7a is larger than the volume value of the sound collected by the first microphone 7b (S518).

  When the volume value of the sound collected by the second microphone 7a is larger (Yes in S518), the process proceeds to S519. On the other hand, when the volume value of the sound collected by the first microphone 7b is larger (No in S518), the process proceeds to S509.

In S519, upon receiving a command from the CPU 9, the connection control unit 20 turns on the second microphone 7a, and the connection control unit 19 turns on the second speaker 6b (S519). Then, the process proceeds to S509. In S518 · No, the reason for proceeding directly to S509 is that in S514, the connection control unit 20 and the connection control unit 19 turn on the first microphone 7b and the first speaker 6a.
The processing after S509 is as described above.

  In S502, when the CPU determines that the setting information at the time of the previous call is not stored (No in S502), the process may advance to S512 without proceeding to S504. The RAM 11 in S509 corresponds to the setting information storage unit of the present invention. Then, after determining that the previous state is stored in S502 (S502, Yes), the CPU 9 when turning on the microphone and the speaker stored in the RAM 11 in S504 or S506 performs the third setting control. Corresponds to the division.

  As described above, in the mobile phone 1, sounds are collected by the first microphone 7b and the second microphone 7a, and the volume values are compared. Then, the microphone that collects the sound with the higher volume value is determined, and the circuit is connected so that the analog electrical signal sent from the determined microphone is sent to the second sound control unit 16. . A circuit is connected so that an analog electrical signal is sent to a speaker built in the same side as the microphone on which no loud sound has been collected.

  Furthermore, in the third embodiment, the microphone and the speaker that were turned on at the previous call are stored in the RAM, and the content stored in the RAM is read. In the initial stage of processing, the microphone and speaker that were turned on at the previous call are turned on. When a user starts a call again immediately after ending a call, the user often starts the call with the mobile phone 1 in the same direction as the previous call. Also, when the user often holds the mobile phone 1 and starts a call according to the orientation of the display content displayed on the LCD 2, the user should start the call with the form phone 1 in the same direction as the previous call. There are many. Therefore, the mobile phone 1 according to the third embodiment has an effect of increasing convenience when starting a call.

  In the present embodiment, the mobile phone 1 has been described as the call device of the present invention. However, the present invention is not limited to the mobile phone 1 and can also be applied to a phone including a cordless receiver and a main body. In this telephone, the handset transmits and receives data via the main body and the antenna 14. Further, the main body transmits / receives data transmitted / received from the handset to / from the telephone line network via the NCU built in the main body.

  Further, although 60 dB is used as an example of the threshold value, a different value may be used. Further, a plurality of options may be provided as threshold candidates, and the user may select a desired value from them.

  In the present embodiment, the first voice control unit 15 performs decryption of encrypted data and D / A conversion, and the second voice control unit 16 performs A / D conversion and digital data encryption. It was. However, the first voice control unit 15 may perform D / A conversion, the second voice control unit 16 may perform A / D conversion, and the shared machine 8 may perform encryption and decryption of digital data.

  In the present embodiment, the connection control unit 19 and the connection control unit 20 are relay circuits, but an integrated circuit such as an ASIC may be used. In that case, the connection control unit 19 and the first voice control unit 15, and the connection control unit 20 and the second voice control unit 16 may be integrated into one integrated circuit.

  In the present embodiment, the connection control unit 19 and the microphone 6 to be turned on are switched. However, any configuration that switches between the microphone 6 and the CPU 9 is within the scope of the present invention. For example, each of the first microphone 7b and the second microphone 7a may have a connection control unit that switches on and off, and the CPU 9 may directly control the first microphone 7b and the second microphone 7a. In addition, considering the occurrence of howling, it is not realistic, but the following welfare is also possible. Both the sound collected by the first microphone 7b and the sound collected by the second microphone 7a are sent to the second sound control unit 16 at the same timing. The CPU 9 selects and acquires only the sound collected by one microphone 7. In addition, the CPU 9 may acquire encrypted data of sound collected from both microphones 7 at the same timing, and process only the sound collected by one microphone.

DESCRIPTION OF SYMBOLS 1 Cellular phone 1a Operation surface 6a 1st speaker 6b 2nd speaker 7b 1st microphone 7a 2nd microphone

Claims (4)

A first sound collecting unit that is provided on one end side in the longitudinal direction of one side surface and collects sound;
A first sound emitting unit that is provided on one end side in the longitudinal direction of the one side surface and emits sound;
A second sound collecting unit that collects sound and is provided on the other end side in the longitudinal direction of the one side surface;
A second sound emitting unit provided on the other end side in the longitudinal direction of the one side surface for emitting sound;
A volume value storage unit for storing a volume value of the sound collected by the first sound collection unit and the second sound collection unit;
A sound collection setting unit for setting one of the first sound collection unit and the second sound collection unit to be capable of collecting sound;
A sound emission setting unit for setting one of the first sound emission unit and the second sound emission unit to emit sound;
After the sound collection setting unit sets the first sound collection unit to be capable of collecting sound and the sound emission setting unit sets the second sound emission unit to be able to emit sound, the first sound collection unit collects sound. A first volume value storage control unit that performs control so as to store a first volume value that is a volume value of the voice that has been performed in the volume value storage unit;
After the sound collection setting unit sets the second sound collection unit to be able to collect sound and the sound emission setting unit sets the first sound emission unit to be able to emit sound, the second sound collection unit collects the sound. A second volume value storage control unit that performs control so as to store the second volume value that is the volume value of the voice that is stored in the volume value storage unit;
A volume value comparison unit for determining which of the first volume value and the second volume value stored by the first volume value storage unit is larger;
When the volume value comparison unit determines that the first volume value is greater than the second volume value, the sound output setting is made so that the first sound collection unit can collect sound in the sound collection setting unit. A first setting control unit that causes the second sound emitting unit to be configured to emit sound;
If the volume value comparison unit determines that the second volume value is greater than the first volume value, the sound output setting is made so that the second sound collection unit can collect sound in the sound collection setting unit. And a second setting control unit configured to set the first sound emitting unit so that the first sound emitting unit can emit the sound. A first storage unit for storing a first threshold value;
A volume value difference calculating unit that calculates a volume value difference that is a difference between the first volume value and the second volume value;
A first threshold value comparison unit for determining whether or not the volume value difference is greater than or equal to the first threshold value;
When the first threshold value comparison unit determines that the volume value difference is greater than or equal to the threshold value,
The call device according to claim 1, wherein the volume value comparison unit makes a determination. (Configuration to read the previous call settings history)
Setting information for storing the first sound collection unit or the second sound collection unit set by the sound collection setting unit and for storing the first sound emission unit or the second sound emission unit set by the sound emission setting unit A storage unit;
When a call is started, the first sound collection unit stored in the setting information storage unit is configured to cause the sound collection setting unit to set the first sound collection unit or the second sound collection unit stored in the setting information storage unit. The communication apparatus according to claim 1, further comprising a third setting control unit that causes the second sound emitting unit to be set in the sound emitting setting unit. A second storage unit for storing a second threshold value;
The first sound collection set by the sound collection setting unit so that sound collection is possible after the sound collection setting unit and the sound emission setting unit have been set by the first, second, or third setting control unit Or a second threshold value comparison unit for determining whether a third volume value, which is the volume value of the sound collected by the second sound collection unit, is equal to or greater than the second threshold value. ,
When the second threshold value comparison unit determines that the third volume value is less than the threshold value, the first volume value storage control unit and the second volume value storage control unit are: The communication device according to any one of claims 1 to 3, wherein control is executed.

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