KR101311931B1 - Method for reproducing in real-time the file receiving in non real-time transfer protocol and video apparatus using the same - Google Patents

Abstract

Provided are a real-time playback method for a file being received according to a non-real-time transmission protocol and an imaging apparatus using the same. The playback method and video device according to the present invention can reproduce a file being received in real time according to a non-real time transmission protocol rather than a real time transmission protocol. As a result, even a file received from an external device capable of only transmitting a file according to a non-real time transfer protocol without supporting communication according to a real time transfer protocol can be reproduced in real time.

Non-real time transfer protocol, real time playback, file transfer

Description

Method for reproducing in real-time the file receiving in non real-time transfer protocol and video apparatus using the same}

1 is a block diagram of a TV according to an embodiment of the present invention;

FIG. 2 is a flowchart provided to explain a process of a TV shown in FIG. 1 reproducing an audio file being received in real time according to an FTP (File Transfer Protocol); FIG.

3 is a block diagram of an imaging apparatus according to another embodiment of the present invention, and

FIG. 4 is a flowchart provided to explain a process in which a video device shown in FIG. 3 reproduces a file being received in real time according to a non-real time transmission protocol.

Explanation of symbols on the main parts of the drawings

100: TV 110: broadcast receiving module

120: decoding unit 122: video decoding unit

124: audio decoding unit 140: output unit

142: video output unit 144: audio output unit

150: Bluetooth communication module 160: control unit

170: buffer

The present invention relates to a playback method and an image device to which the present invention is applied, and more particularly, to a playback method for reproducing a file received from an external device in real time and a video device to which the same is applied.

With the development of wireless communication and networking technology, it is possible to transmit and receive files wirelessly between devices constituting a network and use files held in one device by other peripheral devices.

The multimedia file transfer between the devices constituting the network may be performed in real time or non-real time, and a protocol for each is provided. The real-time transmission protocol supports the device receiving the multimedia file to play the multimedia file before the file reception is completed. However, the non-real time transmission protocol only supports playing the multimedia file after receiving the multimedia file.

One of the real-time transmission protocols used in the wireless network constructed according to the Bluetooth method is the AV protocol (Audio Video Protocol). The Bluetooth device A can play back in real time while receiving a file from the Bluetooth device B according to this AV protocol.

However, the AV protocol does not support the function of allowing the Bluetooth device A to receive a list of files stored in the Bluetooth device B.

Therefore, the user cannot select a multimedia file to be played out of the multimedia files stored in the Bluetooth device B through the Bluetooth device A. To enable this, the user has to take the inconvenience of moving to the place where the Bluetooth device B is located and manually selecting the desired file by manipulating the Bluetooth device B directly.

In addition, even when the multimedia file being played through the Bluetooth device A is to be changed, the user must move to the place where the Bluetooth device B is located, and then directly manipulate the Bluetooth device B to select a desired file. Discomfort is even worse.

In order to solve this problem, it is necessary to modify the AV protocol or to establish a protocol that supports the function of receiving a list of files stored in the Bluetooth device A by the Bluetooth device B, which is a difficult problem in reality.

Meanwhile, there may be a Bluetooth device C that supports communication according to the non-real time transmission protocol but does not support communication according to the real time transmission protocol. In this case, the Bluetooth device A may not play back in real time while receiving a multimedia file from the Bluetooth device C.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a playback method and a video device applying the same in real time to the file being received in accordance with the non-real-time transmission protocol rather than the real-time transmission protocol Is in.

According to the present invention for achieving the above object, the video device, the communication module is connected to communicate with an external device; A buffer in which data received through the communication module is stored; A decoding unit for decoding the applied data; The data constituting the file received from the external device through the communication module according to the non-real time transmission protocol is stored in the buffer, and the data is stored in the buffer before reception of all the data constituting the file is completed. A control unit for applying some of the data to the decoding unit; And an output unit for reproducing the data decoded by the decoding unit in real time.

The non-real time transmission protocol is preferably a protocol that does not support multimedia streaming. In addition, the non-real time transmission protocol may be FTP.

The controller may receive a list of files stored in the external device from the external device through the communication module according to the NRT protocol, and output the received list through the output unit. .

The decoding unit may transmit the decoded data to the output unit and request data to be decoded from the controller when the decoding of the data applied from the controller is completed.

When the request is received from the decoding unit, the control unit applies some of the data stored in the buffer to the decoding unit, and the data having the most recently received location in the file structure to the external device through the communication module. By requesting the next data one step further, the next data received from the external device through the communication module according to the NRT protocol may be stored in the buffer.

The decoding unit may decode the data to be decoded when the application of the data to be decoded from the controller is completed.

The communication module may be connected to communicate with the external device wirelessly. In addition, the communication module may be connected to the external device to enable wireless communication in a Bluetooth manner.

The file may be at least one of an audio file and a video file.

The video apparatus may further include a broadcast receiving module configured to receive a broadcast signal, wherein the decoding unit decodes a broadcast signal received by the broadcast receiving module, and the output unit decodes the broadcast signal decoded by the decoding unit. It is preferable to output the broadcast for.

On the other hand, the playback method according to the present invention comprises the steps of: storing data constituting a file received according to the non-real-time transmission protocol from an external device; Decoding some of the stored data before reception of all the data constituting the file is completed; And reproducing the decoded data in real time.

The non-real time transmission protocol is preferably a protocol that does not support multimedia streaming. In addition, the non-real time transmission protocol may be FTP.

And receiving a list of files stored in the external device from the external device according to the NRT protocol. And outputting the received list.

In addition, the decoding step, the control unit for storing the data constituting the received file in the buffer performs a portion of the data stored in the buffer before the reception of all the data constituting the file is completed. Applying to a decoding unit to perform; Decoding, by the decoding unit, data applied from the controller; Transmitting the decoded data to an output unit which reproduces the decoded data in real time when the decoding of the data applied from the control unit is completed; And requesting data to be decoded by the decoding unit from the control unit.

The reproduction method may further include: when the request is received from the decoding unit, the control unit applying some of the data stored in the buffer to the decoding unit; And requesting, by the controller, the next data one position behind the most recently received data in the file structure to the external device, and storing the next data received from the external device according to the NRT protocol in the buffer. It may further include.

The decoding unit may further include decoding the data to be decoded when the application of the data to be decoded from the controller is completed.

In the storing step, it is preferable to store data constituting a file wirelessly received from the external device. The storing may include storing data constituting a file wirelessly received from the external device in a Bluetooth manner.

The file may be at least one of an audio file and a video file.

The present playback method may further include decoding a received broadcast signal; And outputting a broadcast on the decoded broadcast signal.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of a TV according to an embodiment of the present invention. The TV 100 shown in FIG. 1 may receive a broadcast and provide it to a user, as well as play an audio file received from a wirelessly connected Moving Picture Experts Group Layer 3 (MP3) player 10 in real time. .

In this case, the TV 100 may reproduce the audio file being received in real time according to a file transfer protocol (FTP) which is a kind of a non-real time transfer protocol. That is, the TV 100 may play back a file being received in accordance with FTP, which is a kind of protocol that does not support multimedia streaming.

As shown in FIG. 1, the TV 100 according to the present embodiment includes a broadcast receiving module 110, a decoding unit 120, a GUI generating unit 130, an output unit 140, and a Bluetooth communication module 150. ), A controller 160, a buffer 170, and a storage 180.

The broadcast receiving module 110 receives a broadcast signal from a broadcasting station or a satellite by wire or wirelessly. The broadcast receiving module 110 separates the received broadcast signal into video data, audio data, and other data and outputs the separated broadcast signal.

The decoding unit 120 decodes the applied data, and includes a video decoding unit 122 and an audio decoding unit 124.

The video decoding unit 122 decodes the applied video data and converts the applied video data into a playable format. The audio decoding unit 124 decodes the applied audio data and converts the audio data into a reproducible format. The video decoding unit 122 and the audio decoding unit 124 may receive data from the broadcast receiving module 110 or the controller 160 to be described later.

The GUI generator 130 generates a GUI to be displayed on the screen, and adds the generated GUI to the video decoded and output by the video decoder 122.

The output unit 140 outputs video and audio, and includes a video output unit 142 and an audio output unit 144.

The video output unit 142 displays a video to which a GUI output from the GUI generator 130 is added on a display (not shown), or an external device (for example, another TV connected through an external output terminal (not shown)). )

The audio output unit 144 outputs audio output from the audio decoding unit 124 through a speaker (not shown) or to an external device connected through an external output terminal (not shown).

The Bluetooth communication module 150 is connected to the MP3 player 10, which is a kind of Bluetooth device, to enable wireless communication, and performs wireless communication with the MP3 player 10.

The controller 160 controls the overall operation of the TV 100. Specifically, the broadcast reception operation of the broadcast reception module 110, the communication operation of the Bluetooth communication module 150, and the GUI generation operation of the GUI generation unit 130 are controlled.

The controller 160 stores the audio data received from the MP3 player 10 through the Bluetooth communication module 150 in the buffer 170 or the storage unit 180. The storage unit 180 may be implemented as a recording medium (not shown) such as a memory or a hard disk drive (HDD) and a controller (not shown) that stores audio data in or reads audio data stored in the recording medium. .

In this specification, audio data refers to a part of an audio file. In other words, the audio file is composed of a plurality of audio data. When the audio file is transmitted to the TV 100, the MP3 player 10 divides the audio file into a plurality of audio data and transmits the divided audio data to the TV 100 one by one.

When the controller 160 stores the audio data in the buffer 170, it is a case where the audio file is to be reproduced in real time. On the other hand, when the control unit 160 stores the audio data in the storage unit 180, it is a case where the audio file is to be played in non-real time (after the reception of all audio data constituting the audio file is completed later). .

In both the case where the audio file is to be played back in real time and when the audio file is played back in real time, the controller 160 receives the audio file from the MP3 player 10 through FTP via the Bluetooth communication module 150. That is, the controller 160 receives audio data constituting the audio file to be reproduced in real time according to FTP.

Hereinafter, the TV 100 shown in FIG. 1 reproduces the audio file being received in real time according to FTP, that is, the real time playback of the audio file is completed before reception of all audio data constituting the audio file is completed. A process to be performed will be described in detail with reference to FIG. 2.

As shown in FIG. 2, first, the controller 160 sets the communication protocol between the TV 100 and the MP3 player 10 to FTP (S200). In addition, the controller 160 requests and receives an audio file list from the MP3 player 10 through the Bluetooth communication module 150 (S205). Here, the 'audio file list' means a list of audio files stored in the MP3 player 10.

In step S200, the communication protocol between the TV 100 and the MP3 player 10 is set to FTP. The FTP supports a function of receiving a file list of a connected device. Therefore, the controller 160 can request and receive an audio file list from the MP3 player 10 through step S205.

Thereafter, the controller 160 controls the GUI generator 130 to output the audio file list received in step S205 through the video output unit 142 (S210). If any one of the audio files listed in the audio file list displayed on the screen is selected by the user in step S210 (S215-Y), the control unit 160 transmits a decoding command to the audio decoding unit 124 ( S220).

Then, the audio decoding unit 124 requests the audio data to be decoded from the control unit 160 (S225). The reason why the audio decoding unit 124 requests audio data to be decoded from the control unit 160 is that audio data to be decoded does not exist in a buffer (not shown) provided in the audio decoding unit 124.

The control unit 160 receiving the request from the audio decoding unit 124 requests and receives the first audio data from the MP3 player 10 through the Bluetooth communication module 150, and receives the received first audio data into the buffer 170. Save (S230). Here, the "first audio data" refers to audio data having the earliest position in the file structure among audio data constituting the file with the audio selected by the user in step S215.

Since the communication protocol between the TV 100 and the MP3 player 10 has been set to FTP in step S200, initial audio data reception in step S230 is also performed according to FTP.

When the first audio data is stored in the buffer 170, the controller 160 applies the first audio data stored in the buffer 170 to the audio decoding unit 124 (S235). The controller 160 requests and receives the next audio data from the MP3 player 10 through the Bluetooth communication module 150 and stores the received next audio data in the buffer 170 (S240).

Here, 'next audio data' refers to audio data whose position in the file structure is one second behind the most recently received audio data. In addition, since the communication protocol between the TV 100 and the MP3 player 10 has been set to FTP in step S200, the next audio data reception in step S240 is also performed according to the FTP, as in step S230.

On the other hand, when the step S235 is completed, the audio decoding unit 124 decodes the first audio data and converts it into a playable format (S245). Completion of step S235 means that the first audio data has been stored in a buffer provided in the audio decoding unit 124.

When the step S245 is completed, the audio decoding unit 124 transmits the first decoded audio data to the audio output unit 144 (S250). When the step S250 is completed, the audio decoding unit 124 requests the control unit 160 to decode the audio data (S255).

Step S255 is preferably performed immediately after step S250 is completed. When the step S255 is completed, the audio decoding unit 124 stops the decoding operation until the next audio data is applied.

The control unit 160 receiving the request from the audio decoding unit 124 applies the audio data stored in the buffer 170 to the audio decoding unit 124 (S260). The controller 160 requests and receives the next audio data from the MP3 player 10 through the Bluetooth communication module 150, and stores the received next audio data in the buffer 170 (S265).

As described above, the next audio data is the audio data one position behind the most recently received audio data in the file structure. Receiving the next audio data in step S265 is also performed according to the FTP, as in steps S230 and S240. On the other hand, if reception of all the audio data constituting the audio file is completed, step S265 is not performed.

On the other hand, when the step S260 is completed, the audio decoding unit 124 decodes the applied audio data and converts it into a playable format (S270). The audio decoding unit 124 transmits the decoded audio data to the audio output unit 144 (S275).

Thereafter, if the decoding of all the audio data constituting the audio file is not completed (S280-N), the process is performed again from step S255.

In addition, while such steps are being performed, the audio output unit 144 reproduces and outputs the decoded audio data transmitted in steps S250 and S275 in real time.

In step S200, the communication protocol between the TV 100 and the MP3 player 10 has been set to FTP. After reception of all audio data constituting the audio file is completed, decoding of the audio data is performed according to FTP. However, in the present embodiment, 1) the audio data received from the MP3 player 10 is directly applied to the audio decoding unit 124 (S235, S260), and 2) the audio data applied is directly transmitted from the audio decoding unit 124. By decoding (S245, S270), it is possible to implement a real-time playback of the audio file being received according to the FTP.

In the present embodiment, the audio file is assumed to be composed of a plurality of audio data. The size of the audio data is not determined, and may be determined in consideration of the specification of the audio file, the communication protocol, and the performance of the MP3 player and the TV. In addition, the size of the audio data may be changed according to the state of the wireless channel.

In addition, in the present embodiment, it is assumed that audio data received at once from the MP3 player to the TV is decoded at once. That is, the reception unit and the decoding unit for the audio file are assumed to be the same as one audio data, but this is an example for convenience of description. Therefore, the reception unit and the decoding unit for the audio file may be implemented differently. For example, one audio data is received from the MP3 player to the TV at a time, and decoding may be implemented such that only half of the audio data is performed at a time. In this case, the audio data received and not decoded is buffered.

In the present embodiment, it is assumed that one next audio data is further received / stored after the first audio data reception / storage. The number of next audio data further received / stored after the first audio data reception / storage can be changed. If the channel condition is bad, it is desirable to increase this number.

In the present embodiment, the audio file received according to the FTP is reproduced in real time, but the technical idea of the present invention is applicable to a video file in addition to the audio file.

In addition, FTP described in the present embodiment is a kind of non-real-time transmission protocol, and the technical spirit of the present invention may be applied even when using another non-real-time transmission protocol.

In addition, in the present embodiment, the MP3 player and the TV have been described as performing the wireless communication by Bluetooth method. As an example of the wireless communication method using the Bluetooth method, the MP3 player and the TV may perform wireless communication or wired communication in a different manner. Even if the technical idea of the present invention can be applied.

In addition, as an example of an external device that can be connected to a TV, the MP3 player may be applied to other external devices in addition to the MP3 player, and the TV may be applied to other video devices other than a TV as a kind of video device. Of course.

Hereinafter, another embodiment of the present invention will be described in detail with reference to FIGS. 3 and 4.

As shown in FIG. 3, an imaging apparatus according to another embodiment of the present invention includes a communication module 310, a controller 320, a decoder 330, an output unit 340, and a buffer 350.

The communication module 310 is connected to communicate with an external device, the buffer 350 is a storage medium that stores the data received through the communication module 310, the decoding unit 330 decodes the applied data.

The controller 320 stores the data constituting the file received according to the non-real time transmission protocol from the external device through the communication module 310 in the buffer 350. The controller 320 applies some of the data stored in the buffer 350 to the decoding unit 330 before the reception of all the data constituting the file is completed.

The output unit 340 reproduces the data decoded by the decoding unit 330 in real time.

According to the playback method illustrated in FIG. 4, first, the controller 320 stores data constituting a file received from an external device according to a non-real time transmission protocol in the buffer 350 (S410). Then, the decoding unit 330 decodes some of the data stored before reception of all the data constituting the file is completed (S420). Thereafter, the output unit 340 reproduces the decoded data in real time (S430).

In this way, the audio file being received can be reproduced in real time according to the non-real time transmission protocol.

As described above, according to the present invention, the file being received can be reproduced in real time according to the non-real-time transmission protocol. Accordingly, since the communication according to the real-time transmission protocol is not supported, a file received from an external device capable of only transmitting a file according to the non-real-time transmission protocol can be reproduced in real time.

In addition, even when a file is to be played in real time, a list of files stored in an external device can be provided to the user, thereby further increasing user convenience.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (22)

A communication module connected to communicate with an external device; A buffer in which data received through the communication module is stored; A decoding unit for decoding the applied data; The data constituting the file received from the external device through the communication module according to the non-real time transmission protocol is stored in the buffer, and the data is stored in the buffer before reception of all the data constituting the file is completed. A control unit for applying some of the data to the decoding unit; And And an output unit for reproducing the data decoded by the decoding unit in real time. The method of claim 1, The non-real time transmission protocol, Video equipment, characterized in that the protocol does not support multimedia streaming. The method of claim 1, The non-real-time transfer protocol is a video device, characterized in that the FTP (File Transfer Protocol). The method of claim 1, The control unit, And receiving a list of files stored in the external device from the external device through the communication module according to the NRT protocol, and outputting the received list through the output unit. The method of claim 1, The decoding unit, And when the decoding of the data applied from the controller is completed, the decoded data is transmitted to the output unit, and the controller requests data to be decoded from the controller. 6. The method of claim 5, The control unit, When the request is received from the decoding unit, some of the data stored in the buffer is applied to the decoding unit, and the next data in which the location of the file structure is one second behind the most recently received data is transmitted to the external device through the communication module. And request and store the next data received from the external device through the communication module according to the NRT protocol in the buffer. 6. The method of claim 5, The decoding unit, And when the application of the data to be decoded from the controller is completed, decoding the data to be decoded. The method of claim 1, The communication module includes: Imaging device is connected to the external device so as to communicate wirelessly. 9. The method of claim 8, The communication module includes: And an external device connected to the external device in a wireless manner. The method of claim 1, The file is And at least one of an audio file and a video file. The method of claim 1, It further comprises a broadcast receiving module for receiving a broadcast signal, The decoding unit, Decoding a broadcast signal received by the broadcast receiving module; The output unit includes: And outputting a broadcast on the broadcast signal decoded by the decoding unit. Storing data constituting a file received according to a non-real-time transmission protocol from an external device; Decoding some of the stored data before reception of all the data constituting the file is completed; And And reproducing the decoded data in real time. 13. The method of claim 12, The non-real time transmission protocol, Playback method characterized in that the protocol does not support multimedia streaming. 13. The method of claim 12, The non-real time transfer protocol is a file transfer protocol (FTP). 13. The method of claim 12, Receiving a list of files stored in the external device from the external device according to the NRT protocol; And And outputting the received list. 13. The method of claim 12, The decoding step, A control unit for storing data constituting the received file in a buffer and applying a portion of data stored in the buffer to a decoding unit for decoding before reception of all the data constituting the file is completed; ; Decoding, by the decoding unit, data applied from the controller; When the decoding of the data applied from the controller is completed, transmitting the decoded data to an output unit which reproduces the decoded data in real time; And Requesting the decoding unit to decode the data from the control unit. 17. The method of claim 16, When the request is received from the decoding unit, the control unit applying some of the data stored in the buffer to the decoding unit; And Requesting, by the controller, the next data one position behind the most recently received data in the file structure to the external device and storing the next data received from the external device according to the NRT protocol in the buffer; The playback method further comprising. 17. The method of claim 16, And decoding the data to be decoded when the application of the data to be decoded from the control unit is completed. 13. The method of claim 12, The storing step, And reproducing data constituting a file wirelessly received from the external device. The method of claim 19, The storing step, And reproducing data constituting a file wirelessly received from the external device via a Bluetooth method. 13. The method of claim 12, The file is At least one of an audio file and a video file. delete

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