JP2011139437A - Media apparatus, method of controlling the same, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a media apparatus for reproducing recorded audio or video in a correct direction even when the direction in recording or in reproduction is changed by a user, to provide a method of controlling the same, and to provide a program. <P>SOLUTION: A plurality of microphones 13 are disposed while being separated from one another. A detection unit 14 detects the direction of the media apparatus itself. An audio signal allocation section 200 allocates audio signals acquired from the plurality of microphones 13 to a plurality of audio channels on the basis of the detection result of the detection unit 14. A storage unit 17 records the audio signals allocated by the audio signal allocation section 200. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a media apparatus for recording and reproducing audio or video, a control method for the media apparatus, and a program. More specifically, the present invention relates to a media apparatus used by appropriately changing the direction, a control method for the media apparatus, and a program. .

  Small recording devices and recording devices are prevalent, and not only recording / playback or recording / playback dedicated devices, but also recording / playback functions and recording / playback functions are provided for portable media devices, smartphones, PDAs (Personal Digital Assistants), etc. Has been. In these apparatuses, a stereo microphone may be provided for recording, and the stereo microphone is arranged at a predetermined interval in the casing of the apparatus.

JP 2008-180857 A

  The technology of Patent Document 1 is a mobile terminal device in which a display panel and an operation unit are arranged on one surface, and a device that detects how to hold the device and displays an image on the display panel according to the detected orientation. It is disclosed. In such a device, when a recorded file is played back, the image is displayed in accordance with the user's usage direction, but the stereo sound recorded along with the image is used in the horizontal direction of the device. Depending on the orientation, the left and right are reversed.

  An object of the present invention is to provide a media device, a media device control method, and a program in which recorded audio or video is played back in the correct orientation even when the orientation during recording and playback is changed by the user. is there.

 In order to achieve the above object, a media device (1) according to the first invention includes a plurality of microphones (13) arranged apart from each other, a detection unit (14) for detecting the orientation of the own device, Based on the detection result by the detection unit (14), an audio signal allocation unit (200) that allocates audio signals acquired from the plurality of microphones (13) to a plurality of audio channels is allocated by the audio signal allocation unit (200). And a storage unit (17) for recording the audio signal.

 In the media device (1) according to the second invention, in the first invention, the plurality of microphones (13) are two microphones, and the audio signal allocating unit (200) is the two microphones (13). The audio signal acquired by the above is assigned to the right channel and the left channel.

 In the media device (1) according to a third aspect, in the second aspect, the detection unit (14) detects the vertical direction of the own device, and the audio signal allocation unit (200) When it is detected in 14) that the direction of the device is upside down, the audio signals acquired by the two microphones (13) are assigned to the left and right channels.

 A media device (1) according to a fourth aspect of the present invention is the imaging device (19) for capturing an image and processing of the video signal acquired by the imaging unit (19) in any one of the first to third aspects of the invention. A video data processing unit (220) that performs the video data processing unit (220), and the video data processing unit (220) changes a direction of the video signal acquired by the imaging unit (19) based on a detection result by the detection unit (14). The storage unit (17) records the video signal processed by the video data processing unit (220) in addition to the audio signal.

 In the media device (1) according to the fifth invention, in the fourth invention, the video data processing unit (220) is detected by the detection unit (14) that the direction of the own device is upside down. In the case where the image signal is received, the process of changing the direction of the video signal acquired by the imaging unit (19) upside down is performed.

 According to a sixth aspect of the present invention, there is provided a control method for a media device (1) comprising: a detection step for detecting a direction of the own device; and audio signals obtained by a plurality of microphones (13) based on a detection result in the detection step. An audio signal allocating step for allocating to a channel, and a recording step for recording the audio signal allocated by the audio signal allocating step are provided.

 A program according to a seventh aspect of the present invention provides a direction determination step for causing a computer included in the media device (1) to determine the direction of the own device based on a signal from the detection unit (14) that detects the direction of the own device; Based on the determination result in the step, an audio signal allocating step for allocating an audio signal acquired by a plurality of microphones (13) to an audio signal allocating unit (200) for allocating an audio signal to a plurality of audio channels; The allocated audio signal is executed as a recording step for recording in the storage unit (17) for recording the audio signal.

    According to the present invention, the recorded audio or video is reproduced in the correct direction even when the recording and reproduction directions are changed by the user.

It is a block diagram of the configuration of a media device according to the present invention. It is a front perspective view of a media device in the present invention. It is a back perspective view of the media apparatus in this invention. It is a flowchart showing the operation | movement by the media apparatus based on 1st Example in this invention. It is an explanatory conceptual diagram in the case of recording and reproducing sound using the media device according to the first embodiment of the present invention. It is a flowchart showing the operation | movement by the media apparatus based on 2nd Example in this invention. It is an explanatory conceptual diagram when recording and reproducing both audio and video using the media device according to the second embodiment of the present invention. It is a description conceptual diagram of the audio | voice data allocation process by the audio | voice signal allocation part in this invention. It is a conceptual diagram which shows the circuit which comprises the audio | voice signal allocation part in this invention. It is an explanatory conceptual diagram of the audio data allocation processing by the audio signal allocation unit in the present invention.

  The media device 1 of the present invention will be described with reference to FIGS. FIG. 1 is a configuration block diagram of the media device 1, and FIGS. 2 and 3 are a front perspective view and a rear perspective view of the media device 1. The media device 1 preferably has vertical, horizontal, and thickness dimensions and weight that can be held by a user with both hands or one hand or placed on a palm.

  The media device 1 is a portable recorder or the like that can record audio or video in addition to audio, and if it has the same function, a portable media device, PDA, tablet type It may be a PC, a mobile phone, a smartphone, or the like.

  The media device 1 includes a display unit 11, an operation unit 12, a microphone 13, a detection unit 14, an input unit 15, an output unit 16, a storage unit 17, a speaker 18, an imaging unit 19, and a control unit 20.

  The display unit 11 is a liquid crystal display device, an organic EL (Electro Luminescence) display device, or the like provided integrally with the media device 1, and displays various types of information regarding the media device 1. The operation unit 12 is a switch or button for receiving various operations on the media device 1, a touch panel device provided on the display unit 11, or the like.

  The microphone 13 is provided in the media device 1 and acquires an audio signal. The microphone 13 includes a left microphone 13L disposed on the left side of the main body of the media device 1 and a right microphone 13R disposed on the right side of the main body.

  The detection unit 14 is a sensor that detects the orientation of the media device 1, and the media device 1 is in a normal direction (direction shown in FIGS. 2 and 3) or in a reverse direction (see FIG. 2) by an acceleration sensor or the like. 2 and the direction shown in FIG. 3 is reversed. As the acceleration sensor, for example, a sensor that detects acceleration in two, three, or more directions is used.

  The input unit 15 is an input terminal for inputting various data and various signals from the outside to the media device 1. The output unit 16 is an output terminal for outputting various data and various signals from the media device 1 to an external device or the like. The input unit 15 and the output unit 16 may perform input / output by wireless communication, non-contact communication, or the like without using a terminal or the like.

  The storage unit 17 includes, for example, an HDD (Hard Disk Drive), a flash memory, or the like, and stores various data. The storage unit 40 may be an external storage device such as a memory card, USB memory, or external HDD connected to a connection unit (not shown).

  The speaker 18 outputs sound such as various contents reproduced in the media device 1. The speaker 18 includes a left speaker 18L disposed on the left side of the main body of the media apparatus 1 and a right speaker 18R disposed on the right side of the main body. Further, an amplifying unit (not shown) may be included between the control unit 20 and the speaker 18.

  The imaging unit 19 includes an objective lens and the like in addition to a CCD (Charge Coupled Device) image sensor and a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and acquires an image incident on the objective lens as data. In addition to the image sensor and the objective lens, the imaging unit 19 may include a lens driving unit (not shown) that focuses by driving the objective lens and the like under the control of the control unit 20.

  The control unit 20 includes, for example, a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), a digital signal processor (DSP), and the like, as well as an audio signal allocation unit 200, an audio data processing unit, and the like. 210, an ADC (Analog Digital Converter) 215, a DAC (Digital Analog Converter) 216, and a video data processing unit 220.

  The audio signal allocation unit 200 allocates left and right channels of the audio signal to be stored in the storage unit 17 corresponding to the tilt state of the media device 1 obtained by analyzing the signal acquired from the detection unit 14 by a CPU or the like. The audio signal allocating unit 200 is realized by processing such as a switch constituted by various electronic circuits and a DSP.

  The audio data processing unit 210 is realized by a DSP or the like, and performs processing such as decoding and encoding of audio data, sound quality adjustment, and surround processing according to a command from a CPU or the like. For example, the audio data acquired by the microphone 13 and converted into digital data by the ADC 215 described later is compressed into an MP3 (MPEG Audio Layer-3) format by the user's selection or the like.

  The ADC 215 converts an analog audio signal input from the microphone 13 or the input unit 15 into digital audio data. The DAC 216 converts the digital audio data stored and reproduced in the storage unit 17 into an analog audio signal and outputs the analog audio signal to the output unit 16 and the speaker 18. The ADC 215 and the DAC 216 may be dedicated ICs.

  The video data processing unit 220 is realized by a DSP, a processor for video data processing, and the like, and performs image quality adjustment, encoding, decoding, and the like of the video data acquired by the imaging unit 19. The image quality adjustment of the video data includes changing the direction of the video data. The video data may be a still image or a moving image. For example, when the video data acquired by the imaging unit 19 is a still image, the video data is compressed into the JPEG format or the like, and when the video data includes audio data and video data, the video data is compressed into the MPEG-4 format or the like.

  As an example, the media device 1 is configured as a rectangular casing as shown in FIGS. 2 and 3, but is not limited to a rectangle, and may have various other shapes. FIG. 2 is a front perspective view of the media device 1, and a display unit 11, an operation unit 12, and a speaker 18 are arranged on the front side. The speaker 18 has a left speaker 18L on the left and a right speaker 18R on the right. The operation unit 12 may be a touch panel formed on the display unit 11. The operation unit 12 and the speaker 18 are not limited to being arranged on the front side of the media device 1, but may be arranged on the side surface or the back side. The right speaker 18R is disposed on the right side.

  As shown in FIG. 2, the description will be made assuming that the left and right direction is the X-axis direction, the vertical direction is the Y-axis direction, and the depth direction is the Z-axis direction toward the front of the media device.

  FIG. 3 is a rear perspective view of the media device 1, and the imaging unit 19 and the microphone 13 are arranged on the rear side. The microphone 13 has a left microphone 13L disposed on the left side and a right microphone 13R disposed on the right side when facing the front. The microphone 13 is not limited to the arrangement on the back surface side of the media device 1 but may be arranged on the side surface or the front surface. Is placed.

  The user can record audio and video using the media device 1. For example, the microphone 13 can acquire sound around the media device 1 or in a specific direction and store it as sound data in the storage unit 17. Furthermore, an image centered on the direction in which the image capturing unit 19 faces can be stored in the storage unit 17 as image data by the image capturing unit 19. These audio data and video data are appropriately compressed by the audio data processing unit 210 or the video data processing unit 220 and stored in the storage unit 17.

 In addition, the media device 1 reproduces audio data and video data stored in the storage unit 17 by operating the operation unit 12 by the user. Various data stored in the storage unit 17 may be recorded by other devices in addition to the audio data and video data recorded by the own device. Various data to be reproduced may be supplied from an external storage device as the storage unit 17 or an external device via the input unit 15.

  Here, the normal direction and the reverse direction of the media device 1 are defined. The user may use the media apparatus 1 by rotating it to various rotation angles (clockwise rotation direction positions) on the XY plane formed by the X axis and the Y axis, with the front side of the media device 1 facing toward him. is there. A reference rotation angle is determined for this rotation angle. The direction at the reference rotation angle is defined as “normal direction”, and the direction of the rotation angle rotated by 180 ° with respect to the reference angle is defined as “reverse direction”. In the media device 1, the rotation angle of the media device 1 in the state shown in FIG. Therefore, the direction of the media device 1 in FIG. 2 is the normal direction, and the direction in which the media device 1 in FIG. 2 is turned upside down is the reverse direction.

 The above-mentioned “normal direction” and “reverse direction” may have a width of about ± 45 degrees around the direction shown in FIG. 2 and the opposite direction. That is, if the rotation angle on the XY plane detected by the detection unit 14 centering on the state shown in FIG. 2 is within a range of ± 45 degrees, it is used in the normal direction, and the direction shown in FIG. If the rotation angle on the XY plane with respect to the state is within a range of ± 45 degrees, it may be used in the reverse direction.

  Further, the rotation angle on the YZ plane detected by the detection unit 14 around the state shown in FIG. 2 is also the rotation on the YZ plane formed by the Y axis and the Z axis as the rotation direction of the media device 1. If it is within the range of ± 45 degrees, it is used in the normal direction, and if the rotation angle on the YZ plane is within the range of ± 45 degrees with the direction shown in FIG. It may be used in

  Next, a first embodiment of the operation of the media device according to the present invention will be described with reference to FIGS. FIG. 4 is a flowchart for explaining the operation according to the first embodiment, and explains the operation concerning recording of sound.

  First, the control unit 20 of the media device 1 determines whether or not the voice recording operation is started by the operation of the operation unit 12 by the user (step S11). If it is determined in step S11 that the voice recording operation has been started (step S11: Yes), the control unit 20 determines whether the orientation of the media device 1 is the reverse direction based on the output from the detection unit 14. (Step S12). If it is determined in step S11 that the voice recording operation has not been started (step S11: No), the process of step S11 is repeated. The start of the voice recording operation in step S11 is normally performed by the operation of the operation unit 12 by the user, but may be the start of a voice recording operation using a timer set by the user using the operation unit 12.

  When it is determined in step S12 that the orientation of the media device 1 is the reverse direction (step S12: Yes), the control unit 12 performs a process of switching and recording the left and right channels of audio to be recorded (step S14). Although details of the processing in step S14 will be described separately, the control unit 20 converts the audio signal input from the left microphone 13L into audio data of the right channel by the processing of the audio signal allocation unit 200, and similarly input from the right microphone 13R. The audio signal is recorded in the storage unit 17 as audio data of the left channel by the processing of the audio signal allocation unit 200.

  If it is determined in step S12 that the orientation of the media device 1 is not the reverse direction (step S12: No), the control unit 12 performs normal audio recording processing without switching the left and right channels of the audio to be recorded (step S12). S13).

  During the voice recording operation in steps S13 and S14, the control unit 20 determines whether or not the voice recording operation is ended by the operation of the operation unit 12 by the user (step S15). If it is determined in step S15 that the voice recording operation has ended (step S15: Yes), this process ends. The voice recording operation in step S15 is normally terminated by the operation of the operation unit 12 by the user. However, the recording operation using the timer set by the user using the operation unit 12 is completed, or the remaining storage capacity of the storage unit 17 is stored. May be performed by determining that the remaining capacity of the battery (not shown) is equal to or less than a predetermined value.

 If it is determined in step S15 that the voice recording operation has not ended (step S15: No), the process proceeds to step S12.

  FIG. 5 is a conceptual diagram illustrating audio recording and reproduction according to the first embodiment. FIG. 5A is a conceptual diagram in which the audio of the recording target 50 is recorded using the media device 1, and the media device 1 is used in the upside down direction. When used in this way, the left microphone 13L is positioned on the right side and the right microphone 13R is positioned on the left side as viewed from the user. Therefore, based on the output signal from the detection unit 14 built in the media device 1, the control unit 20 records the audio signal input from the left microphone 13L by the audio signal allocation unit 200 as the right channel audio data, and the right microphone 13R. The audio signal input from is controlled so as to be recorded as audio data of the left channel.

  In the state shown in FIG. 5A, the display unit 11 may display that voice is being recorded. In the example of FIG. 5A, “Recording” is displayed. Further, since the audio recording operation is performed in the upside down direction based on the output of the detection unit 14, the display unit 11 may also display that the audio channel is reversed and recorded. .

  FIG. 5B is a conceptual diagram in which audio data recorded in the state of FIG. 5A is reproduced by using the media device 1 in the normal direction. Here, the sound output from the left speaker 18 </ b> L is sound that is input from the right microphone 13 </ b> R in FIG. 5A and recorded as sound data of the left channel in the storage unit 17. Similarly, the sound output from the right speaker 18R is input by the left microphone 13L and recorded as sound data of the right channel in the storage unit 17.

  FIG. 5C is a conceptual diagram in which the audio data recorded in the state of FIG. 5A is reproduced by the external audio reproducing device 60 using the portable recording medium 55 which is the storage unit 17. . The external audio reproduction device 60 is an audio reproduction device of various forms such as a stationary type and a portable type, and may be an in-vehicle device, and includes a left channel speaker 61L and a right channel speaker 61R. Here, when the recording medium 55 is inserted into a memory card slot (not shown) provided in the external audio reproducing device 60 and the audio data recorded by the media device 1 is reproduced, the left channel speaker 61L displays the right side in FIG. Audio recorded as left channel audio data input by the microphone 13R is output. Similarly, the right channel speaker 61R outputs the sound that is input through the left microphone 13L and recorded as the right channel sound data.

  As described above, even though the media device 1 is used in the opposite direction at the time of voice recording, the right and left voices are not reversed even when playback is performed on the own device or another device, and there is no sense of incongruity. Playback is possible.

  Next, a second embodiment of the operation of the media device according to the present invention will be described with reference to FIGS. FIG. 6 is a flowchart for explaining the operation according to the second embodiment, and explains the operation relating to recording of a moving image by sound and video. In the description of FIG. 6, a description of the same processing as that of the first embodiment shown in FIG. 4 is omitted.

  First, the control unit 20 of the media device 1 determines whether or not a moving image recording operation is started by the operation of the operation unit 12 by the user (step S21). When it is determined in step S21 that the moving image recording operation has started (step S21: Yes), the control unit 20 determines whether the orientation of the media device 1 is the reverse direction based on the output from the detection unit 14. (Step S12). When it is determined in step S21 that the moving image recording operation has not been started (step S21: No), the process of step S21 is repeated. The start of the moving image recording operation in step S21 is normally performed by the operation of the operation unit 12 by the user, but may be the start of the moving image recording operation using a timer set by the user using the operation unit 12.

  If it is determined in step S12 that the orientation of the media device 1 is the reverse direction (step S12: Yes), the control unit 12 switches the left and right channels of the audio in the moving image to be recorded and flips the video in the moving image upside down. A recording process is performed (step S24). Although details of the processing in step S24 will be described separately, the control unit 20 converts the audio signal input from the left microphone 13L into audio data of the right channel by the processing of the audio signal allocation unit 200, and similarly input from the right microphone 13R. The audio signal is converted into audio data of the left channel by the processing of the audio signal allocation unit 200. Further, the control unit 20 causes the video data processing unit 220 to invert the video data acquired by the imaging unit 19 and records it in the storage unit 17 together with the sound.

  In step S12, when it is determined that the orientation of the media device 1 is not the reverse direction (step S12: No), the control unit 12 does not switch the left and right channels of the audio to be recorded and does not invert the video to be recorded upside down. Then, a normal moving image recording process is performed (step S23).

  During the moving image recording operation in step S23 and step S24, the control unit 20 determines whether or not the moving image recording operation is ended by the operation of the operation unit 12 by the user (step S25). If it is determined in step S25 that the moving image recording operation has been completed (step S25: Yes), this process ends. The end of the moving image recording operation in step S25 is normally performed by the operation of the operation unit 12 by the user, but the end of the recording operation using a timer set by the user using the operation unit 12 or the remaining recording capacity of the storage unit 17 May be performed by determining that the remaining capacity of the battery (not shown) is equal to or less than a predetermined value.

 If it is determined in step S25 that the moving image recording operation has not ended (step S25: No), the process proceeds to step S12.

  FIG. 7 is a conceptual diagram illustrating recording and playback of moving images according to the second embodiment. FIG. 7A is a conceptual diagram in which a moving image of the recording target 50 is recorded using the media device 1, where the media device 1 is used upside down. When used in this way, the left microphone 13L is positioned on the right side and the right microphone 13R is positioned on the left side as viewed from the user. Therefore, based on the output signal from the detection unit 14 built in the media device 1, the control unit 20 converts the audio data in the recorded moving image into the right channel of the audio signal input from the left microphone 13L by the audio signal allocation unit 200. Control is performed so that the audio signal recorded as audio data and input from the right microphone 13R is recorded as audio data of the left channel. Further, in the state of FIG. 7A, the video shot by the imaging unit 19 is converted upside down by the processing of the video data processing unit 220 and recorded in the storage unit 17.

  In the state of FIG. 7A, the display unit 11 may display that a moving image is being recorded. In the example of FIG. 7A, “recording” is displayed, and an image in the recording range including the currently recorded recording target 50 is displayed in the background. The display unit 11 may display a video before being inverted upside down by the video data processing unit 220, or a video after being inverted upside down.

  FIG. 7B is a conceptual diagram in which the moving image data recorded in the state of FIG. 7A is reproduced by using the media device 1 in the normal direction. Here, the sound output from the left speaker 18 </ b> L is sound that is input from the right microphone 13 </ b> R in FIG. 7A and recorded as sound data of the left channel in the storage unit 17. Similarly, the sound output from the right speaker 18R is input by the left microphone 13L and recorded as sound data of the right channel in the storage unit 17. Further, the video displayed on the display unit 11 is a video acquired by the imaging unit 19 in FIG. 7A and converted upside down by the video data processing unit 220 and recorded in the storage unit 17.

  FIG. 7C is a conceptual diagram in which the moving image data recorded in the state of FIG. 7A is reproduced by the external video / audio reproduction device 70 using the portable recording medium 55 which is the storage unit 17. is there. The external video / audio reproduction device 70 is a moving image reproduction device of various forms such as a stationary type and a portable type, and may be an in-vehicle device. In the example of FIG. 7C, the external video / audio reproduction device 70 is a video / audio reproduction device 71 such as a DVD (Digital Versatile Disc) reproduction device or a BD (Blu-ray Disc) reproduction device, and a video display device such as a liquid crystal television device. 72. The video display device 72 includes a left channel speaker 73L and a right channel speaker 73R.

Here, when the recording medium 55 is inserted into a memory card slot or the like (not shown) provided in the video / audio reproduction device 71 and the moving image data recorded by the media device 1 is reproduced, the left channel speaker 73L in the video display device 72 receives FIG. In a), the sound that is input by the right microphone 13R and recorded as the sound data of the left channel is output. Similarly, the right channel speaker 73R outputs the sound that is input from the left microphone 13L and recorded as the right channel sound data. Further, the video display device 72 displays the video recorded upside down acquired in FIG.

  As described above, even when the media device 1 is used in the reverse direction at the time of moving image recording, the right and left of the sound and the top and bottom of the video are not reversed even when the reproduction is performed by the own device or another device. Video playback without any sense of incongruity becomes possible.

  5 and 7, various data recorded by the media device 1 can be reproduced by the external audio reproduction device 60 or the external video / audio reproduction device using the recording medium 55 such as a memory card. The transmission is not limited to wired or wireless. For example, connection using an RCA standard cable or HDMI (High-Definition Multimedia Interface), Wi-Fi (Wireless Fidelity) communication, communication such as Bluetooth, or data transmission using short-range communication such as a transfer jet.

  Note that the processing in steps S12, S13, and S14 in FIG. 4 and the processing in steps S12, S23, and S24 in FIG. 6 each time a result different from the orientation of the media device 1 detected by the initial detection unit 14 is obtained. Instead of executing the processes of S13, S14, S23, and S24, it may be determined only at the start of recording. Furthermore, when a predetermined time elapses from when it is detected that the direction is different, processing corresponding to the different direction may be performed. In that case, the control unit 20 is provided with a delay circuit (not shown), and processing corresponding to a different direction may be performed from audio data or moving image data when a different direction is detected after a predetermined time has elapsed. Good. Such processing can prevent unintended reversal of audio and video due to an erroneous operation of the media device 1 or the like.

  Next, audio signal left / right switching processing by the audio signal allocating unit 200 in the above embodiment will be described with reference to FIGS.

FIG. 8 is a conceptual diagram showing processing by the audio signal assignment unit 200 when the audio data is a linear PCM signal. In the linear PCM signal, a right channel audio signal (Rch data) and a left channel audio signal (Lch data) are alternately arranged. As shown in FIG. 8, the audio data of the linear PCM data 300 are arranged as L _n−1 , R _n−1 , L _n , R _n , L _{n + 1} , R _{n + 1} , L _{n + 1} . In this case, the audio signal allocation unit 200 configured by a DSP or the like replaces the audio data of the right channel and the left channel with these audio signals as phase-inverted linear PCM data 300 ′. By this processing, the linear PCM data 300 has a phase in which R ′ _n−1 , L ′ _n−1 , R ′ _n , L ′ _n , R ′ _{n + 1} , L ′ _{n + 1} , and R ′ _{n + 2} are arranged. It is converted into inverted linear PCM data 300 ′ and stored in the storage unit 17. By reproducing the converted audio data, the audio data with the left and right channels switched can be reproduced.

  FIG. 9 is a conceptual diagram in which the audio signal allocation unit 200 is configured with another configuration. The audio signal allocation unit 200 in this case is realized by an audio switch IC or the like controlled by the control unit 20. When the control unit 20 determines that the orientation of the media device 1 is reverse based on the output of the detection unit 14, the control unit 20 outputs a signal such as a predetermined voltage to the audio switch that is the audio signal allocation unit 200. The switch is switched to turn on the circuit represented by the broken line in FIG. Thereby, the audio signal acquired by the left microphone 13L is input to the right channel DAC 215R in the ADC 215 by the audio signal allocation unit 200. Similarly, the audio signal acquired by the right microphone 13R is input to the left channel DAC 215L. The audio data converted into digital data by the ADC 215 is appropriately subjected to processing such as compression processing by the audio data processing unit 210 and stored in the storage unit 17.

  FIG. 10 is a conceptual diagram showing processing by the audio signal allocating unit 200 when the audio signal is defined as the right channel and the left channel by the LR clock signal. The audio signal allocating unit 200 is a DSP constituting the control unit 20. Etc. FIG. 10A is a processing example in the audio signal allocating unit 200 when the media apparatus 1 is in the normal direction, and the audio data 300 (DATA) is data that is input from the microphone 13 and converted into digital data by the ADC 215. And shows a state synchronized with the system clock 315. The audio data 300 is allocated as left channel audio data (Left Data) and right channel audio data (Right Data) for each predetermined bit length. For this reason, the audio data 300 is assigned as a signal for each of the left and right channels by the LR clock 310 synchronized with the system clock 315.

  FIG. 10B shows a state in which the signals defining the left and right channels in the LR clock 310 are reversed. Specifically, the levels of a normal Hi level signal (for example, a signal representing a level “1” of a digital signal) and a low level signal (for example, a level signal representing a “0” of a digital signal) in the LR clock 310 are set. By inverting, the left and right channel assignments are reversed. Besides the level inversion, the left and right channel assignments can be reversed by shifting the cycle of the LR clock 310 by a half cycle.

  In this way, by reversing the left and right channel assignment by the LR clock 310, the audio signal acquired by the left microphone 13L becomes the right channel audio data, and the audio signal acquired by the right microphone 13R is similarly used by the left channel audio. Data can be stored in the storage unit 17. Accordingly, the audio data stored in the storage unit 17 can be reproduced with the left and right channels reversed.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications (including addition and deletion) are possible without departing from the scope of the present invention.

  For example, the orientation of the media device 1 detected by the detection unit 14 is tilted about 90 degrees (± 45 degrees) clockwise or counterclockwise on the XY plane from the state shown in FIG. If so, the audio signal allocating unit 200 may acquire the audio signal acquired by the microphone 13 positioned above in that state as audio data of the right channel. Specifically, when a sound or a moving image is recorded by tilting 90 degrees clockwise from the state of FIG. 2, the sound signal acquired by the left microphone 13L located above is recorded as the sound data of the right channel, The audio signal acquired by the right microphone 13R located at is recorded as audio data of the left channel. The reverse setting may also be used.

  The same applies to the video data. When the media device 1 is recorded in a state where the media device 1 is tilted by about 90 degrees (± 45 degrees) clockwise, the video data processing unit 220 processes the video data in the reverse direction (counterclockwise). Rotate 90 degrees around) and store in the storage unit 17. Even when the image data is recorded 90 degrees (± 45 degrees) counterclockwise, the video data is rotated 90 degrees clockwise and stored.

1: Media device, 11: Display unit, 13: Microphone, 14: Detection unit, 18: Speaker, 19: Imaging unit, 20: Control unit, 200: Audio signal allocation unit, 220: Video data processing unit

Claims (7)

A plurality of microphones spaced apart from each other;
A detector that detects the orientation of the aircraft,
An audio signal allocation unit that allocates audio signals acquired from the plurality of microphones to a plurality of audio channels based on the detection result by the detection unit;
A media apparatus comprising: a storage unit that records the audio signal allocated by the audio signal allocation unit. The plurality of microphones are two microphones;
The audio signal allocation unit allocates audio signals acquired by the two microphones to a right channel and a left channel.
The media device according to claim 1.
new The detection unit detects the vertical direction of its own machine,
The audio signal allocating unit allocates audio signals acquired by the two microphones to the left and right channels when the detection unit detects that the direction of the own device is upside down.
The media device according to claim 2. An imaging unit for shooting images,
A video data processing unit for processing a video signal acquired by the imaging unit;
Further comprising
The video data processing unit performs a process of changing the direction of the video signal acquired by the imaging unit based on the detection result by the detection unit,
The storage unit stores the video signal processed by the video data processing unit in addition to the audio signal;
The media device according to any one of claims 1 to 3. The video data processing unit performs processing to change the direction of the video signal acquired by the imaging unit upside down when the detection unit detects that the orientation of the own device is upside down.
The media device according to claim 4. A detection step for detecting the orientation of the aircraft;
An audio signal assignment step for assigning audio signals acquired by a plurality of microphones to a plurality of audio channels based on the detection result in the detection step;
A recording step of recording the audio signal allocated by the audio signal allocation step;
A method for controlling a media device, comprising: A computer provided in the media device;
Direction determination step for determining the direction of the own machine based on the signal from the detection unit for detecting the direction of the own machine;
An audio signal allocation step of allocating audio signals acquired by a plurality of microphones to an audio signal allocation unit that allocates audio signals to a plurality of audio channels based on the determination result in the orientation determination step;
A recording step of recording the audio signal allocated in the audio signal allocation step in a storage unit for recording the audio signal;
A program characterized by being executed as

Images