JP2016208167A - Audio visual adapter and audio visual data transmission/reproduction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the transmission of audio visual data from an electronic apparatus to an audio visual apparatus without need of reading the audio visual data in a batch on a file-by-file basis, if the data is not transmitted in a file but playback data is transmitted at any time.SOLUTION: An audio visual data transmission/reproduction method includes: file emulating means for camouflaging as if the audio visual data are bundled into one audio visual data file in a file format which is readable and reproducible by an audio visual apparatus, is spite of the audio visual data not formed in one file because of being transmitted at any time in time series through communication means; and interface means for connecting an audio visual adapter in a recognizable mode by the audio visual apparatus as a memory in which the audio visual data are preserved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an audio-visual adapter for sending audio-visual data to an audio-visual device for playing back audio-visual data from an electronic device that stores audio-visual data obtained by converting audio and video into data, and transmission / reproduction of audio-visual data. Regarding the method.

  Conventionally, for example, a storage medium such as a USB memory is connected to an audio visual device such as a car audio or an audio system, and audio visual data obtained by converting audio and video stored in the storage medium into data is played back on the audio visual device. Things have been done.

  However, with the method of playing back audiovisual data by connecting a storage medium to an audiovisual device, only the audiovisual data that currently exists in the storage medium can be played back. Once the storage medium is removed from the audiovisual device, the audiovisual data must be written to the storage medium using another device and then reconnected to the audiovisual device.

  As an example of a method for eliminating such complexity, for example, a configuration shown in Patent Document 1 is effective. In the example of Patent Document 1, a memory card incorporating a wireless LAN AP (access point) and STA (station) is shown. By registering a memory card with a built-in wireless LAN function in a computer or smartphone and setting automatic capture of photos and videos, the video and music of the device with the registered WLAN built-in memory card inserted automatically. In other words, it is taken into a PC or smartphone and becomes reproducible.

JP 2013-235401 A

  However, with any conventional connection device (connection method), audiovisual data is handled as an actual file, so it cannot be played back until the audiovisual device has read it as a single file, or file transfer Therefore, there are some problems that a special program (application software) is required for an audio-visual device such as a personal computer or a smartphone, or that streaming audio that is not filed such as Internet radio cannot be reproduced.

  The present invention has been made in view of such circumstances, and it is not necessary to read audiovisual data in batches in units of files, and data is not sent in files, and playback data is stored as needed. An object of the present invention is to provide an audio-visual adapter and an audio-visual data transmission / reproduction method capable of transmitting audio-visual data from an electronic device to an audio-visual device even when it is sent.

  The audio visual adapter according to claim 1 is not a single file because the audio visual data is transmitted and received in time series by the communication means for transmitting and receiving audio visual data to and from the electronic device. Nevertheless, a file emulating device that disguises as if bundled into one file as an audiovisual data file in a file format that can be read and played by an audiovisual device, and the audiovisual adapter is connected to an audiovisual device. Interface means for connecting to a device in a form recognizable as a memory in which an audiovisual data file is stored, and audiovisual data sent continuously from an electronic device as needed. Characterized by a continuously renewable in Al device.

  The audiovisual adapter according to claim 2, wherein the file emulating unit does not store the audiovisual data transmitted from time to time by the communication unit as a single file, but stores the audiovisual data received from the communication unit. The audiovisual data file appears to exist even though it is not filed, and the audiovisual data is disguised so that it can be read out as part of the data of the audiovisual data file. .

  The audiovisual adapter according to claim 3, wherein audiovisual data optimized for communication sent from the electronic device side is converted and controlled to data suitable for an audiovisual data file. It is characterized by providing.

  The audio visual adapter according to claim 4 is characterized in that the interface means is connected to the audio visual device using the USB format.

  The audio visual adapter according to claim 5 is characterized in that the communication means is a wireless means.

  The audio visual adapter according to claim 6 is characterized in that the communication method of the wireless means is Bluetooth (registered trademark).

  According to a seventh aspect of the present invention, there is provided a method for transmitting and reproducing audiovisual data, wherein the audiovisual adapter receives audiovisual data from and to an electronic device via the communication means of the audiovisual adapter, and the audiovisual adapter that has received the audiovisual data receives the audiovisual data. The audio visual data is sent as time series by the communication means at any time, so that it is not a single file, but as an audio visual data file in a file format that can be read and played by an audio visual device. Disguised as bundled in one file, and connected the audiovisual adapter to the audiovisual device in a form recognizable as a memory where audiovisual data files are stored Appropriate manner the audiovisual data transmitted in a continuous, characterized by a continuously renewable in audiovisual equipment from the electronic device.

  The audio visual data transmission / playback method according to claim 8 is such that the audio visual adapter receives the audio visual data sent from time to time by the communication means from the communication means instead of storing it as a single file. To make an audiovisual data file appear to exist even though the audiovisual data is not filed, and to disguise the audiovisual data as if it could be read as part of the data in the audiovisual data file Features.

  According to the audio visual data transmission / playback method of claim 9, the audio visual adapter disguises the audio visual data as an audio visual data file as if bundled into one file from the electronic device side. The audio visual data optimized for communication to be sent is converted and controlled into data suitable for the audio visual data file.

  The audio visual data transmission / playback method according to claim 10 is characterized in that the audio visual adapter is connected to the audio visual device using the USB format.

  The audio visual data transmission / reproduction method according to claim 11 is characterized in that the communication means is a wireless means.

  The audio visual data transmission / reproduction method according to claim 12 is characterized in that the communication method of the wireless means is Bluetooth (registered trademark).

  According to the invention of the present application, it is not necessary to read audiovisual data all at once, and data is not sent as a file, but even if playback data is sent as needed, audiovisual data is sent from an electronic device. Audio visual data can be sent to

It is a block diagram which shows an example of the system configuration | structure which concerns on the audio visual adapter which concerns on this invention. It is explanatory drawing which shows an example of the usage method of the audio visual adapter. It is a block diagram which shows the other example of the system configuration | structure which concerns on the audio visual adapter which concerns on this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a configuration diagram showing an example of a system configuration relating to an audiovisual adapter according to the present invention. FIG. 2 is an explanatory diagram showing an example of how to use the audiovisual adapter.

  The audio-visual adapter 1 shown in the figure is an audio-visual device that is car audio for reproducing audio-visual data from an electronic device 6 that is a tablet-type portable information terminal that stores audio-visual data obtained by converting audio and video data. The audio visual data is sent to 4 and the audio visual data stored in the electronic device 6 is reproduced by the audio visual device 4.

  The audiovisual data sent from the electronic device 6 to the audiovisual device 4 and reproducible by the audiovisual device 4 includes sound, sound, music, video, and combinations thereof, but is sound or video.

  In this embodiment, the electronic device 6 is described as a tablet-type portable information terminal. However, the present invention is not limited to this, and any electronic device that stores audiovisual data may be used. The electronic device 6 has a built-in or external wireless function capable of transferring audiovisual data to and from the wireless unit 10 of the audiovisual adapter 1 described later.

  Furthermore, although the audio visual apparatus 4 is described as car audio, the present invention is not limited thereto, and any audio visual apparatus that is audio capable of reproducing audio visual data may be used. The audiovisual device 4 is a device that can read and reproduce in the form of an audiovisual data file bundled in a file in units of reproducing audiovisual data, and a memory (storage medium) in which the audiovisual data file is stored. ) In a recognizable form.

  Next, the audio visual adapter 1 that connects the electronic device 6 and the audio visual device 4 will be described. The audio visual adapter 1 includes a wireless unit 10, a USB microcomputer 20, a USB connector 30, a switch 12, an LED 14, and the like. The switch 12 is for turning on / off the power of the audio visual adapter 1 or changing the function or setting of the audio visual adapter 1. The LED 14 is for turning on / off the power of the audio visual adapter 1, the operating state, or the like. Is for displaying.

  The wireless unit 10 of the audiovisual adapter 1 is a communication unit that transmits and receives audiovisual data to and from the electronic device 6 and is a wireless unit. In the present embodiment, the communication method of the wireless unit 10 that is a communication unit and a wireless unit will be described as Bluetooth (registered trademark), but any wireless method may be used. Examples of wireless systems (wireless means) include Bluetooth (registered trademark), DLNA (registered trademark), Wi-Fi (registered trademark), infrared rays, and the like. However, using Bluetooth (registered trademark) makes it easy to wirelessly transmit audio and video, and is suitable when the distance between the electronic device 6 and the audiovisual adapter 1 (audiovisual device 4) is short.

  The USB microcomputer 20 of the audio visual adapter 1 is a microcomputer having functions for operating software for realizing various functions to be described later and generating hardware signals for the wireless unit 10 and the USB connector 30. In the audio visual adapter 1 of the present embodiment, in order to realize various functions to be described later, processing is performed by a microcomputer using software. However, the present invention is not limited to such a form. It is also possible to realize the functions described later with only hardware.

  The USB connector 30 is a connector for connecting the audio visual adapter 1 to the audio visual device 4. In this embodiment, the USB connector 30 is described as being connected using the USB format. Although not limited to the USB format, the audio visual adapter 1 can be connected to many audiovisual devices 4 by using the USB format.

  Next, various functions and operations of the audio visual adapter 1 will be described. First, the audio visual adapter 1 is connected to the audio visual device 4 by inserting the USB connector 30 of the audio visual adapter 1 into the connector port 4 a of the audio visual device 4. Then, the switch 12 of the audio visual adapter 1 is operated or the audio visual adapter 1 starts to operate automatically.

  When audio visual data is to be sent from the electronic device 6 to the audio visual adapter 1 while the audio visual adapter 1 is operating, the wireless unit 10 of the audio visual adapter 1 detects it and receives the audio visual data. It becomes possible. Then, audio visual data starts to be sent from the electronic device 6 to the audio visual adapter 1. Note that the audiovisual data sent from the electronic device 6 to the audiovisual adapter 1 is not a single file, but is sent as needed in time series.

  In this embodiment, since Bluetooth (registered trademark) is used as a wireless system, when audio data is sent as audio visual data, AAC (Advanced Audio Coding), SBC (SubBand Codec), It is sent using a compression format such as aptX. The wireless unit 10 sends the received audiovisual data to the USB microcomputer 20 as needed in time series in analog or digital format.

  In the USB microcomputer 20 that has received the audiovisual data in an analog format or a digital format, if the audiovisual data sent from the wireless unit 10 is not in a format that can be immediately processed by the file emulation unit 24 described later. The audio visual control unit 22 that is an audio visual control means performs a predetermined process. That is, for example, audio visual data optimized for communication (wireless communication) sent from the electronic device 6 side is converted and controlled into data suitable for the audio visual data file. In addition, when the signal from the wireless unit 10 is analog, it may be necessary to perform AD conversion by the audiovisual control unit 22.

  Next, the USB microcomputer 20 performs predetermined processing on the audiovisual data received from the wireless unit 10 or the audiovisual control unit 22 by the file emulation unit 24 that is a file emulation unit.

  Specifically, in the file emulation unit 24, since the audiovisual data is sent from the wireless unit 10 (the audiovisual control unit 22 if necessary) in time series, it is not a single file. Regardless, the audio visual data file in a file format that can be read and played by the audio visual device 4 is processed as if it were bundled into one file.

  More specifically, the file emulation unit 24 does not store the audiovisual data that is sent as needed in time series by the wireless unit 10 (the audiovisual control unit 22 if necessary) as a single file. Even though the audiovisual data received from the wireless unit 10 (the audiovisual control unit 22 as necessary) is not filed, the audiovisual data file appears to exist and the audiovisual data is as if Disguise it so that it can be read out as part of the data in the audiovisual data file.

  As such processing of the file emulation unit 24, for example, FAT (File Allocation Table) information which is file management information is generated in a pseudo manner. Thereby, it seems that the audio visual data sent from time to time by the wireless unit 10 (audio visual control unit 22 as necessary) is bundled in a file format such as WAV or MP3. become.

  Then, the interface unit 26 serving as interface means performs processing for connecting the audiovisual adapter 1 to the audiovisual device 4 in a form recognizable as a memory in which the audiovisual data file is stored. As a result, the audiovisual device 4 recognizes the audiovisual adapter 1 of the present embodiment as a USB memory in which the audiovisual data file is stored. As a result, the audiovisual data can be reproduced by the audiovisual device 4.

  According to the audio visual adapter 1 configured and operated as described above, it is not necessary to read audio visual data all at once, and data is not sent as a file, but playback data is sent as needed. Even when coming, audiovisual data can be sent from the electronic device 6 to the audiovisual device 4.

  In the audio visual adapter 1 described above, the communication unit is described by the wireless unit 10 which is a wireless unit, and communication between the electronic device 6 and the audio visual adapter 1 is performed wirelessly. However, the present invention is not limited to wireless communication, and wired communication is also possible. FIG. 3 illustrates the wired communication unit 16 as the communication means. The audio visual adapter 2 in FIG. 3 is connected to the electronic device 6 via a connector 18 with a cable. Then, the wired communication unit 16 exchanges audiovisual data between the audiovisual adapter 2 and the electronic device 6 through the cable as an operation according to the wireless unit 10 that is a wireless means. Thus, the connection between the audiovisual adapters 1 and 2 and the electronic device 6 may be wireless or wired.

  As described above, according to the present invention, it is not necessary to read audiovisual data all at once, and the electronic device is not always sent as a file, but even when playback data is sent as needed. Therefore, it is possible to provide an audio-visual adapter that can send audio-visual data to an audio-visual device and a method for transmitting and reproducing audio-visual data.

DESCRIPTION OF SYMBOLS 1 ... Audio visual adapter 2 ... Audio visual adapter 4 ... Audio visual equipment 4a ... Connector port 6 ... Electronic equipment 10 ... Radio | wireless part 12 ... Switch 14 ... ..LED
DESCRIPTION OF SYMBOLS 16 ... Wired communication part 18 ... Connector 20 ... USB microcomputer 22 ... Audio visual control part 24 ... File emulation part 26 ... Interface part 30 ... USB connector

Claims (12)

In an audio-visual adapter for sending audio-visual data from an electronic device that stores audio-visual data obtained by converting audio and video into audio-visual equipment for reproducing the audio-visual data,
A communication means for transmitting and receiving the audiovisual data to and from the electronic device;
As the audiovisual data file in a file format that can be read and played by the audiovisual device even though the audiovisual data is not always in one file because it is sent in time series by the communication means, File emulation means that disguise as if bundled in one file,
Interface means for connecting the audiovisual adapter to the audiovisual device in a form recognizable as a memory storing the audiovisual data file;
An audiovisual adapter characterized in that the audiovisual data sent continuously from the electronic device can be reproduced continuously on the audiovisual device. The file emulation means
Rather than storing the audiovisual data sent from time to time in the communication means as a single file,
Even though the audiovisual data received from the communication means is not filed, it appears that the audiovisual data file exists,
2. The audiovisual adapter according to claim 1, wherein the audiovisual data is disguised so that it can be read out as part of the data of the audiovisual data file.   Audio visual control means for converting and controlling the audiovisual data optimized for communication sent from the electronic device side to data suitable for the audiovisual data file is provided. The audio visual adapter according to claim 1 or 2.   4. The audio visual adapter according to claim 1, wherein the interface means is connected to the audio visual device using a USB format.   The audio visual adapter according to any one of claims 1 to 4, wherein the communication means is a wireless means.   6. The audio visual adapter according to claim 5, wherein a communication method of the wireless means is Bluetooth (registered trademark). An audio-visual adapter attached to the audio-visual device for sending the audio-visual data to an audio-visual device for reproducing the audio-visual data from an electronic device that stores audio-visual data obtained by converting audio and video into data In the method of transmitting and reproducing the audiovisual data via
The audiovisual adapter receives the audiovisual data with the electronic device via the communication means of the audiovisual adapter,
The audio-visual adapter that has received the audio-visual data reads the audio-visual device even though the audio-visual data is not a single file because the audio-visual data is sent in time series by the communication means.・ As an audio-visual data file in a playable file format, disguise it as if it were bundled into one file,
Connecting the audiovisual adapter to the audiovisual device in a form recognizable as a memory in which the audiovisual data file is stored;
A method of transmitting and reproducing audiovisual data, characterized in that the audiovisual data transmitted continuously from the electronic device can be continuously reproduced by the audiovisual device. The audiovisual adapter is
Rather than storing the audiovisual data sent from time to time in the communication means as a single file,
Even though the audiovisual data received from the communication means is not filed, it appears that the audiovisual data file exists,
8. The method of transmitting and reproducing audiovisual data according to claim 7, wherein the audiovisual data is disguised so as to be read out as part of the data of the audiovisual data file. The audiovisual adapter is
Prior to disguising the audiovisual data as the audiovisual data file as if it were bundled into one file, the audiovisual data optimized for communication sent from the electronic device side 9. The method of transmitting and reproducing audiovisual data according to claim 7, wherein the audiovisual data file is converted and controlled to data suitable for the audiovisual data file.   10. The audio visual data transmission / reproduction method according to claim 7, wherein the audio visual adapter is connected to the audio visual device using a USB format.   11. The audio visual data transmission / reproduction method according to claim 7, wherein the communication unit is a wireless unit.   12. The method of transmitting and reproducing audiovisual data according to claim 11, wherein the communication method of the wireless means is Bluetooth (registered trademark).

Images