JP2016114838A - Playback apparatus with wireless lan function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a playback apparatus that can conduct backup-recording excellent in operability and work efficiency by wireless-connecting the playback apparatus and a portable device such as a smartphone.SOLUTION: A playback apparatus 10 includes a Wi-Fi module for a Wi-Fi connection with a smart phone 12, for example, and streaming-regenerates an audio signal and sends the audio signal to the smart phone 12 as well as inputting an audio signal from a built-in microphone, for example, and recording the audio signal. The smart phone 12 receives and backup-records an audio signal.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a recording apparatus, and more particularly to a recording / reproducing apparatus having a wireless LAN function.

  Conventionally, when performing backup recording using a recording / reproducing device, a plurality of recording / reproducing devices are prepared and the same sound source is recorded at the same time, or a plurality of recording media are mounted on the recording / reproducing device, and the plurality of recording media are mounted. There are known methods such as recording the same audio signal at the same time, or dividing a single recording medium into a plurality of recording areas and simultaneously recording the same audio signal in each divided area.

  Patent Document 1 describes a recording device that records a digitized audio signal on a recording medium and transmits audio data generated during a recording operation to an external processing device connected to be communicable, It is described that, when an incomplete notification due to communication failure is received from an external processing device, audio data that may have failed to be transmitted is read from the recording medium and retransmitted.

  Patent Document 2 describes a recording apparatus that writes digital waveform data to auxiliary storage means and backup auxiliary storage means via a plurality of recording buffers.

JP 2012-203659 A Japanese Patent No. 2823033

  When performing backup recording using multiple recording / playback devices, it is necessary to place multiple recording / playback devices adjacent to each other in the same environment and to control the same actions at the same time in order to function correctly. There is a problem of very low efficiency.

  In addition, in order to be able to mount a plurality of recording media, the recording / playback apparatus is enlarged in order to secure a mounting space for the recording medium, and the size reduction is required to provide a portable recording / playback apparatus. Become.

  Furthermore, in the method of dividing a single recording medium into a plurality of recording areas, there is a problem that the maximum recording capacity of audio data is substantially reduced and recording for a long time becomes difficult.

  Patent Document 1 describes that audio data generated during a recording operation is transmitted to an external processing device that is communicably connected and recorded. However, in recent years, the technology has been remarkably owned by many users. No consideration is given to cooperation with smartphones that are currently operating.

  An object of the present invention is to provide a recording / reproducing apparatus capable of performing backup recording with excellent operability and work efficiency by wireless connection with a mobile device having a wireless connection function such as a smartphone.

  The present invention comprises input means for inputting an audio signal, processing means for reproducing the streaming while recording the audio signal on a recording medium, and a wireless LAN module for transmitting the audio signal reproduced by streaming. The audio signal can be backed up by a portable device wirelessly connected to the module. The number of wirelessly connected portable devices is not necessarily one, and may be a plurality.

  In one embodiment of the present invention, it further comprises a recording buffer memory in which the audio signal is stored, and a streaming playback buffer memory in which the audio signal is stored, and the processing means includes the recording buffer memory Is recorded on the recording medium, and the audio signal stored in the streaming playback buffer memory is played back by streaming.

  In another embodiment of the present invention, the processing means performs streaming reproduction while recording the audio signal on a recording medium in accordance with a command transmitted from the portable device.

  ADVANTAGE OF THE INVENTION According to this invention, backup recording excellent in operativity and work efficiency is attained by carrying out wireless connection between portable apparatuses provided with wireless connection functions, such as a smart phone.

It is a system configuration figure of an embodiment. It is a processing flowchart of an embodiment. 1 is a configuration block diagram of a recording / reproducing apparatus of an embodiment. It is a schematic diagram which shows the process of the system controller of embodiment. It is a schematic diagram which shows the other process of the system controller of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a system configuration diagram of this embodiment. The recording / reproducing apparatus 10 is wirelessly connected to a portable device having a wireless connection function. In this embodiment, the smart phone 12 is illustrated as a portable device having a wireless connection function, and a wireless LAN, more specifically, a Wi-Fi connection is illustrated as a wireless connection. A smartphone equipped with a Wi-Fi module is known and can be connected to the Internet via an access point such as a wireless router.

  The recording / reproducing apparatus 10 has a known recording / reproducing function, processes an audio signal input from the built-in microphone 22 or the line input terminal 24, records the signal on a recording medium such as an SD card, and records the signal on the SD card. Play the audio signal and output it from the built-in speaker. The recording / reproducing apparatus 10 includes a Wi-Fi module and performs Wi-Fi connection with the smartphone 12. The Wi-Fi connection between the recording / playback apparatus 10 and the smartphone 12 may be a one-to-one connection or a one-to-many connection.

  The user of the recording / reproducing apparatus 10 plays a desired music part and inputs a desired audio signal to the built-in microphone 22 (or the line input terminal 24) of the recording / reproducing apparatus 10 for recording. In FIG. 1, the part of the instrument 14 such as a guitar is shown as a desired music part, but any other part such as a bass part, vocal part, drum part, or the like may be used. The recording / reproducing apparatus 10 inputs the audio signal generated by the musical instrument 14, records it on a recording medium such as an SD card, and records it. In parallel with this, the audio signal is reproduced by streaming and connected to Wi-Fi. It transmits to the smart phone 12 via.

  The smartphone 12 includes a Wi-Fi module and is connected to the recording / reproducing apparatus 10 via Wi-Fi. The user activates a predetermined application installed in the smartphone 12, operates the application, receives an audio signal transmitted from the recording / playback apparatus 10, and records it on a built-in recording medium such as an SD card. Record. Accordingly, the audio signal is recorded in the recording / reproducing apparatus 10 via the built-in microphone 22 (or the line input terminal 24), and at the same time, is recorded in the smartphone 12, and the recording in the smartphone 12 is recorded. 10 can be positioned as a backup recording.

  In this way, the recording / playback apparatus 10 and the smartphone 12 are connected via Wi-Fi, the audio signal is recorded by the recording / playback apparatus 10, is streamed and transmitted to the smartphone 12, and backup recording is performed by the smartphone 12. Since the smartphone 12 can be freely arranged at a desired position within a Wi-Fi connectable range, the operability and work efficiency are remarkably improved.

FIG. 2 is a process flowchart of the present embodiment.
First, the recording / reproducing apparatus 10 performs Wi-Fi connection with the smartphone 12 (S101). Specifically, the Wi-Fi button of the recording / reproducing apparatus 10 is operated to activate the Wi-Fi module. Next, the Wi-Fi module is activated by operating the Wi-Fi button or icon on the smartphone 12 side. When the recording / reproducing apparatus 10 is detected by the smartphone 12 and the SSID that is the identification name of the access point in the wireless LAN of the recording / reproducing apparatus 10 is displayed, the corresponding password is input to establish the Wi-Fi connection. . The password can be displayed on the display unit of the recording / reproducing apparatus 10 and made visible to the user. When the recording / playback apparatus 10 establishes a Wi-Fi connection with a specific smartphone 12, the recording / playback apparatus 10 displays that fact by lighting an LED or the like. The recording / reproducing apparatus 10 functions as an access point in the wireless LAN. In addition, a desired application is activated on the smartphone 12 side, and the state shifts to a reception waiting state for an audio signal transmitted from the recording / reproducing apparatus 10. The connection between the smartphone 12 and the recording / playback apparatus 10 may be established using NFC (Near Field Communication) technology.

  Next, the operation button of the recording / reproducing apparatus 10 is operated to start recording, the musical instrument 14 is played, and the audio signal is input from the built-in microphone 22 (or the line input terminal 24) (S102).

  Next, while recording and recording the audio signal on a recording medium such as an SD card, the recording / reproducing apparatus 10 performs streaming reproduction of the audio signal in parallel with the recording (S103). That is, while storing the audio signal in the recording buffer memory, the audio signal is stored in the streaming playback buffer memory, and at the same time, the audio signal is read from the streaming playback buffer memory and supplied to the Wi-Fi module. It transmits to the smart phone 12 (S104). The audio signal stored in the recording buffer memory is recorded on an SD card or the like. The protocol used for streaming playback is arbitrary, and RTSP, MMS, RTMP, HTTP Live Streaming, MPEG-DASH, or the like can be used.

  The smartphone 12 receives the audio signal transmitted from the recording / playback apparatus 10, records it on a recording medium such as an SD card, and records it (S105).

  When recording by the recording / reproducing apparatus 10 is completed, the user operates the operation button of the recording / reproducing apparatus 10 to stop recording. Along with this, the recording / reproducing apparatus 10 stops transmission of the audio signal, and also stops backup recording on the smartphone 12.

  In the process of FIG. 2, recording start / stop at the recording / reproducing apparatus 10 and recording start / stop at the smartphone 12 are separately operated, but the smartphone 12 functions as a remote controller for the recording / reproducing apparatus 10. Recording start / stop may be controlled collectively on the 12 side.

  Specifically, when the Wi-Fi connection between the recording / playback apparatus 10 and the smartphone 12 is established, the user activates a predetermined application (an application necessary for monitoring and controlling the recording / playback apparatus 10) installed in the smartphone 12. . When the start of recording is instructed in a predetermined application, the smartphone 12 shifts to a reception standby state, and transmits a command instructing start of recording from the smartphone 12 to the recording / reproducing apparatus 10. The recording / reproducing apparatus 10 starts recording in response to a command from the smartphone 12. When the user instructs to stop recording in a predetermined application of the smartphone 12, the recording is stopped on the smartphone 12 side, and a command to stop recording is transmitted from the smartphone 12 to the recording / playback apparatus 10. The recording / reproducing apparatus 10 stops recording in response to a command from the smartphone 12.

  In the process of FIG. 2, the same audio signal is simultaneously recorded on the recording / reproducing apparatus 10 and the smartphone 12, but the formats are not necessarily the same and may be different. For example, the recording / reproducing apparatus 10 records the audio signal in the wav format, while the smartphone 12 records in the mp3 format in consideration of the communication speed of the Wi-Fi connection. In this case, in the recording / reproducing apparatus 10, the recording buffer memory stores in the wav format, and on the other hand, the streaming reproducing buffer memory stores the converted data in the mp3 format.

  The backup recording performed by the smartphone 12 can be used for various purposes. For example, it is possible to easily and easily confirm the audio signal recorded in the recording / reproducing apparatus 10 by reproducing the audio signal backup-recorded on the smartphone 12. In addition, the user may upload an audio signal backed up and recorded on the smartphone 12 to a service (cloud site) on the Internet.

Next, a specific configuration of the recording / reproducing apparatus 10 in the present embodiment will be described.
FIG. 3 is a configuration block diagram of the recording / reproducing apparatus 10 of the present embodiment. The recording / playback apparatus 10 includes a Wi-Fi module 20, a built-in microphone 22, a line input terminal 24, a built-in speaker 30, a display 32, operation buttons 34, a system controller 36, and an SD connector 42.

  The Wi-Fi module 20 is a wireless LAN module, and is a module that performs Wi-Fi connection and data transmission / reception with the smartphone 12. The Wi-Fi module 20 is activated in response to the operation of the operation button 34, establishes a Wi-Fi connection with the smartphone 12, and transmits an audio signal that has been streamed to the smartphone 12. In addition, the Wi-Fi module 20 receives a command from the smartphone 12 as necessary, and supplies the received command to the system controller 36. This command is a command for controlling the operation of the recording / reproducing apparatus 10, and is, for example, recording start, recording stop, or the like. The smartphone 12 may acquire the status of the recording / playback device 10 from the system controller 36 via the Wi-Fi module 20 and display the status on the display of the smartphone 12.

  The built-in microphone 22 is an R channel and L channel stereo microphone, and inputs an audio signal of a musical instrument or the like that is played, and outputs the audio signal to an interface (I / F) 26.

  The line input terminal 24 inputs an audio signal from an external device and outputs it to an interface (I / F) 26.

  The interface (I / F) 26 outputs an audio signal from the built-in microphone 22 or the line input terminal 24 to a codec (CODEC) 28.

  The codec (CODEC) 28 converts the input audio signal into a digital signal, and compresses and encodes it to supply it to the system controller 36. Further, the audio signal supplied from the system controller 36 is decompressed and decoded, converted into an analog audio signal, and output from the built-in speaker 30. The codec (CODEC) 28 may be separated into a module that processes an audio signal from the built-in microphone 22 or the line input terminal 24 and a module that processes an audio signal output to the built-in speaker 30.

  The display 32 is composed of an LCD panel, an organic EL panel or the like, and displays various statuses of the recording / reproducing apparatus 10, such as a recording / reproducing time counter and a recording level. The display 32 includes LEDs that indicate the activation state and connection state of the Wi-Fi module 20. For example, when the Wi-Fi button is operated and the Wi-Fi module 20 is activated and enters the connection standby state, the LED blinks. When the connection with the smartphone 12 is established, the LED is lit and the Wi-Fi button is operated. When the Wi-Fi module 20 is turned off, the LED is also turned off.

  The operation button 34 is a button for instructing the operation of the recording / reproducing apparatus 10. The operation buttons 34 include a Wi-Fi button for switching Wi-Fi on / off, a recording / playback / stop button, a recording level adjustment button, a track selection button, and the like. The operation button 34 may be configured as a jog dial or a touch button on the display 32.

  The system controller 36 includes a processor and a memory, and controls each part of the recording / playback apparatus 10. The system controller 36 executes various processes using the RAM 40 as a working memory according to a processing program recorded in the ROM 38. Various processes include activation / off of the Wi-Fi module 20, establishment of connection with the smartphone 12, processing of an audio signal input from the built-in microphone 22 or the line input terminal 24, recording of the audio signal to an SD card, The streaming reproduction of the audio signal, the supply of the streamed audio signal to the Wi-Fi module 20 and the like are included. The system controller 36 may include a plurality of processors and may cooperate with a PLD (programmable logic device).

  An SD card is attached to the SD connector 42. The system controller 36 records the audio signal by recording it on the SD card. Also, the audio signal recorded on the SD card is read out and output from the built-in speaker 30 via the codec (CODEC) 28.

  As described above, the system controller 36, while recording the audio signal, performs streaming playback and transmits the audio signal to the smartphone 12. The system controller 36 executes this processing using a plurality of built-in buffer memories.

FIG. 4 is a schematic diagram of processing in the system controller 36.
The system controller 36 uses an input buffer memory 36a, a recording buffer memory 36b, and a streaming playback buffer memory 36c as buffer memories.

  The audio signal input from the built-in microphone 22 (or the line input terminal 24) is digitized, compressed and encoded, and stored in the input buffer memory 36a. Then, the audio signal is read from the input buffer memory 36a, stored in the recording buffer memory 36b, and converted into a predetermined format for transmission, for example, mp3 format, and then the streaming playback buffer memory 36c. Is also stored.

  The audio signal stored in the recording buffer memory 36 b is recorded on the SD card attached to the SD connector 42.

  On the other hand, the audio signal stored in the streaming buffer memory 36 c is streamed and reproduced, supplied to the Wi-Fi module 20, and transmitted to the smartphone 12. The streaming playback buffer memory 36c is configured by a ring buffer in which the buffer memory is arranged in a ring shape and the reading position rotates while following the writing position. An area from the read position to the write position is used as a data storage area, and by making this area prohibited from being changed, written data can be read correctly. The other area is an area where data can be updated in preparation for the next reading. If necessary, the entire buffer memory may be divided into N equal parts (for example, four equal parts), and an area to be updated in one process may be defined.

  FIG. 5 is a schematic diagram of another process in the system controller 36. This is a case where the recording / reproducing apparatus 10 and the plurality of smartphones 12 are connected via Wi-Fi. Although two smartphones 12a and 12b are illustrated in FIG. 5, it may be more than this.

  The system controller 36 uses an input buffer memory 36a, a recording buffer memory 36b, and streaming playback buffer memories 36c and 36d as buffer memories.

  The audio signal input from the built-in microphone 22 (or the line input terminal 24) is digitized, compressed and encoded, and stored in the input buffer memory 36a. Then, the audio signal is read from the input buffer memory 36a, stored in the recording buffer memory 36b, and converted into a predetermined format for transmission, for example, mp3 format, and then the streaming playback buffer memory 36c. , 36d.

  The audio signal stored in the recording buffer memory 36 b is recorded on the SD card attached to the SD connector 42.

  On the other hand, the audio signals stored in the streaming buffer memories 36c and 36d are streamed and reproduced, supplied to the Wi-Fi module 20, and transmitted to the smartphones 12a and 12b, respectively. The streaming playback buffer memories 36c and 36d are configured by ring buffers in which the buffer memories are arranged in a ring shape as in the case of FIG. 4 and the read position follows the write position. An area from the read position to the write position is used as a data storage area, and by making this area prohibited from being changed, written data can be read correctly. The other area is an area where data can be updated in preparation for the next reading.

  By performing backup recording simultaneously with a plurality of smartphones 12a and 12b, even if there is a smartphone in which a communication failure has occurred, it can be recovered by backup recording with another smartphone.

  In addition, when performing backup recording simultaneously with a plurality of smartphones 12a and 12b, it is also possible to perform backup recording by changing the format according to the smartphones 12a and 12b. For example, the same format as the recording / reproducing apparatus 10 is used for the smartphone 12a, and the compressed format is used for the smartphone 12b.

  As described above, in this embodiment, since the audio signal is recorded by the recording / reproducing apparatus 10 and the smartphone 12 performs the backup recording, the backup recording with excellent operability and work efficiency is realized.

In this embodiment, the recording stop at the recording / playback apparatus 10 and the recording stop at the smartphone 12 are linked, but even when the recording at the recording / playback apparatus 10 stops, the backup recording on the smartphone 12 continues. You may continue. For example, if the capacity of the recording medium of the smartphone 12 is larger than the capacity of the recording medium of the recording / reproducing apparatus 10, the recording medium capacity becomes full during recording by the recording / reproducing apparatus 10, and further recording is not possible. Even if it becomes possible, it is possible to substantially extend the recording time by continuing the backup recording with the smartphone 12. In this embodiment, the advantages of backup recording with the smartphone 12 are summarized as follows.
(1) Backup recording can be performed easily and easily.
(2) Recording can be performed for a long time using the memory capacity of the smartphone 12.
(3) The backup recorded audio signal can be easily uploaded to the Internet.
(4) By installing a predetermined application on the smartphone 12, the recording / reproducing apparatus 10 can be controlled remotely to control the start / stop of recording.
(5) By performing backup recording on a plurality of smartphones 12 at the same time, reliable backup is possible.

  Incidentally, when the recording medium becomes full during recording by the recording / reproducing apparatus 10 and further recording becomes impossible, the recording / reproducing apparatus 10 performs recording when backup recording is continued on the smartphone 12. The recording is resumed by exchanging the medium. However, the audio signal that is lost during the exchanging operation of the recording medium may be taken in from the smartphone 12 to be repaired. In this case, it is desirable that the recording format of the recording / reproducing apparatus 10 and the recording format of the smartphone 12 are the same.

  In addition, when performing backup recording on a plurality of smartphones 12 as shown in FIG. 5, information on which smartphone 12 was backed up and recorded may be held on the recording / reproducing apparatus 10 side. For example, the date and time of backup recording and the file name are recorded on the SD card together with IDs for specifying the smartphones 12a and 12b, respectively. By checking this information, the user can easily check which smartphone 12 has a backup of the specific file.

  Moreover, in this embodiment, while performing backup recording with the smart phone 12, you may acquire the recording status in the recording / reproducing apparatus 10, and you may display on the screen of the smart phone 12, Thereby, a user is in the position away from the recording / reproducing apparatus 10. The recording state of the recording / reproducing apparatus 10 can be visually confirmed.

  In this embodiment, an audio signal is input from the built-in microphone 22 of the recording / playback apparatus 10, but an external microphone may be used instead of the built-in microphone 22.

  In the present embodiment, Wi-Fi connection is exemplified as the wireless connection, but Bluetooth (registered trademark) or the like may be used.

  DESCRIPTION OF SYMBOLS 10 Recording / reproducing apparatus, 12 Smartphone, 14 Musical instrument, 20 Wi-Fi module, 22 Built-in microphone, 24 Line input terminal, 30 Built-in speaker, 32 Display, 34 Operation button, 36 System controller, 42 SD connector.

Claims (3)

An input means for inputting an audio signal;
Processing means for streaming reproduction while recording the audio signal on a recording medium;
A wireless LAN module for transmitting the streamed audio signal;
A recording / reproducing apparatus having a wireless LAN function, wherein the audio signal can be backed up by a portable device wirelessly connected to the wireless LAN module. The recording / reproducing apparatus having a wireless LAN function according to claim 1, further comprising:
A recording buffer memory in which the audio signal is stored;
A buffer memory for streaming playback in which the audio signal is stored;
The processing means records the audio signal stored in the recording buffer memory on the recording medium, and performs streaming playback of the audio signal stored in the streaming playback buffer memory. Recording / playback device with wireless LAN function. In the recording / reproducing apparatus provided with the wireless LAN function according to claim 1,
The recording / reproducing apparatus having a wireless LAN function, wherein the processing means performs streaming reproduction while recording the audio signal on a recording medium in accordance with a command transmitted from the portable device.

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