KR20100124950A - Apparatus and method for controling contents trick play - Google Patents

Abstract

The present invention relates to an apparatus and method for controlling content trick play. For example, in various types of digital devices such as a network BD-player, a predetermined amount of content data downloaded from a content providing server is buffered. In the meantime, while performing a decoding operation, through the interface with the content providing server, search point data of a predetermined time interval is received, stored in the storage, and a search table for accessing the search point data ( Search table information is generated and recorded, and when a jump operation is requested while reproducing the content data, the search table information is searched to immediately reproduce any search point data stored in the storage. , Then request and receive content data thereafter to connect and play back. As a result, it is possible to process a trick play of a jump operation requested by a user who receives and watches content such as a VOD title in real time, thereby minimizing user waiting time.

Description

Apparatus and method for controling contents trick play}

The present invention relates, for example, to an apparatus and method for controlling content trick play in a digital device that downloads and reproduces various types of content data provided by a content providing server in real time.

A commonly used video on demand (VOD) service, also known as an on-demand video service, for example, allows a large number of users from a central Contents Provider Server via a television or computer screen. It is a network content providing service for selecting a VOD title such as a provided movie and allowing viewing in real time.

The V-audio service may be used for various network services such as ordering a movie transmitted digitally, watching educational video, and video conferencing, and pausing a user while watching a video. It provides various functions such as slow speed or repeated viewing.

For example, when a user selects a VOD title such as a movie and watches in real time, when a user requests a forward jump operation or a backward jump operation, the content providing server downloads in real time. The transmission of the content data is paused.

Then, after jumping for a predetermined time interval or jumping to a recording position set as a search point in advance, content data is read and transmitted from the position. When the same jump operation occurs, a problem arises in that the user must temporarily wait.

The present invention, for example, in a variety of types of digital devices, such as a network BD-Player, if a certain amount of content data downloaded from the content providing server is buffered, while performing a decoding operation, during the content An apparatus and method for controlling content trick play for receiving a search point data through an interface with a providing server to more quickly process a trick play of a jump action requested by a user. It is to provide.

The content trick play control method according to the present invention performs a decoding operation when a predetermined amount of content data downloaded from a content providing server is buffered, and while performing the decoding operation, performs an interface with the content providing server. Requesting and receiving search point data at a predetermined time interval; Storing and storing the received search point data in storage, and generating and recording search table information for accessing the search point data; And retrieving the search table information and immediately reproducing any one search point data stored in the storage when a jump operation is requested while reproducing the content data.

In the search table information, any one or more of each search point number, a reproduction time, and address information in the storage in which the search point data is recorded are stored and managed in the form of a lookup table.

In addition, in the step 3, if a forward jump operation is requested while playing the content data, after confirming the playing time of the content data at that time, the search point data of the next adjacent playing time is immediately played.

In the third step, if a backward jump operation is requested while the content data is being played back, after confirming the playback time of the content data at the time, the search point data of the nearest previous playback time is immediately played. ,

In addition, in step 3, the search point data is immediately reproduced. During the reproducing operation, after requesting and receiving content data based on the playback time of the search point data and receiving the buffer, It is characterized in that the connection and playback following the search point data,

In addition, the content trick play control apparatus according to the present invention, communication means for communication with the content providing server; Buffering means for temporarily storing content data downloaded from said content providing server; Decoding means for decoding if a predetermined amount of content data is temporarily stored in the buffering means; And while performing the decoding operation, request and receive search point data at a predetermined time interval through an interface with the content providing server, store the search point data in storage, and access search table information for accessing the search point data. And a control means for retrieving the search table information and immediately reproducing any one search point data stored in the storage when a jump operation is requested while generating, recording and managing the content data. Features,

In the search table information, any one or more of each search point number, a reproduction time, and address information in the storage in which the search point data is recorded are stored and managed in the form of a lookup table.

In addition, the control means, if the forward jump operation is requested while playing the content data, after confirming the playback time of the content data at that time, characterized in that for immediately reproducing the search point data of the next subsequent playback time,

In addition, when the backward jump operation is requested while the content data is being reproduced, the control means checks the reproduction time of the content data at that time, and immediately reproduces the search point data of the nearest previous reproduction time. ,

Further, the control means immediately reproduces the search point data, and during the reproducing operation, requests and receives and buffers content data thereafter based on the playback time of the search point data, and then The playback function is characterized in that the playback is performed following the search point data.

The apparatus and method for controlling content trick play according to the present invention is, for example, decoding various amounts of content data downloaded from a content providing server in various types of digital devices such as a network BD-Player, and the like. In the meantime, a search table for receiving and retrieving search point data at a predetermined time interval through an interface with a content providing server, storing the data in storage, and accessing the search point data In addition to generating and recording information, when a jump operation is requested while reproducing the content data, the search table information is searched to immediately reproduce any search point data stored in the storage, and By requesting and receiving subsequent content data and connecting and playing it, It is possible to process a trick play of a jump operation requested by a user who receives and watches contents such as an audio title in real time, thereby minimizing user waiting time.

Hereinafter, exemplary embodiments of a content trick play control device and method according to the present invention will be described in detail with reference to the accompanying drawings.

First, the apparatus and method for controlling content trick play according to the present invention can be applied to various types of digital devices equipped with a network function. For example, the network video player 100 which is one of the digital devices to which the present invention is applied. 1, the optical disc 10, the optical pickup 11, the digital signal processing unit 12, the decoder 13, the CPI 14, the buffer memory 15, and the OSD generator ( 16, the storage 17, and the network module 18 may be included.

Meanwhile, the network module 18 is connected to the content providing server 200 providing content such as a VOD title through a network such as the Internet, and then provided by the content providing server 200. The content is downloaded and temporarily stored in the buffer memory 15.

In addition, the decoder 13 performs a series of decoding operations in which content data temporarily stored in the buffer memory 15 is read, decoded into audio and video data, and reproduced, for example. The decoder 13 may be divided into a first decoder for decoding data read from the optical disc 10 and a second decoder for decoding data downloaded through the network module 18.

The storage 17 may include various types of storage, such as a hard disk (HDD) or a flash memory, for example, and the storage 17 corresponds to a jump operation requested by a user. Search point data and search table information for quickly processing trick play are stored and managed.

For example, as shown in FIG. 2, the content data stream provided by the content providing server 200 includes a plurality of search points for jumping to a predetermined time interval (for example, one minute interval). Example: P1, P2, P3 ...) may be pre-assigned.

In the CPI 14 of the network video player 100 which downloads and reproduces the content data stream in real time, when a predetermined amount of content data downloaded from the content providing server is buffered in the buffer memory 15, The decoder 13 operates to perform a decoding operation, during which time the search point data of the predetermined time interval is received and stored in the storage 17 through an interface with a content providing server.

In the CPI 14, search table information for accessing the search point data is generated and recorded. For example, as shown in FIG. 2, the search table information includes each search point. The numbers P1 to Pk, the reproduction time (Time), and address information in the storage in which the search point data is recorded are stored and managed in the form of a lookup table.

Meanwhile, a buffering flag indicating whether the corresponding search point data is stored in the storage may be additionally recorded in the search table information, and the search point data may be, for example, 1 minute each. Content data corresponding to 5 seconds on the basis of the interval, and associated with the address information in the search table information.

In the CPI 14, when a trick play of a forward jump or a backward jump is requested while playing the content data buffered in the buffer memory 15, the search table is requested. By retrieving the information, any one search point data stored in the storage 17 is immediately reproduced, which will be described in detail as follows.

3 is a flowchart illustrating an embodiment of a method for controlling a content trick play according to the present invention. For example, the CPI 14 is provided by the content providing server 200 according to a user's request. In operation S10, a series of content buffering operations for buffering a content such as a VOD title to the buffer memory 15 are performed.

On the other hand, when the predetermined amount of content data is buffered in the buffer memory 15, the decoder 13 performs a series of decoding operations for reading out the content data and playing the audio and video data. In operation 14, when the decoding operation is started as described above (S11), an interface operation with the content providing server connected and connected through the network module 18 is performed to request and receive search point data. (S12).

Then, as described above with reference to FIG. 2, the search point data received from the content providing server is stored in the storage 17, and search table information for accessing the search point data is created ( S13).

For example, while receiving the first to third search point data P1 to P3 and storing the same in the storage, a predetermined ratio (eg, 50%) of content data buffered in the buffer memory 15 is stored. When decoded, the CPI 14 determines that buffering of content data is necessary in the buffer memory.

If it is determined that the buffering of the content data is necessary as described above (S14), the interface with the content providing server 200 is performed to continuously transmit the content data transmitted in real time before transmitting the search point data. And a series of content reproducing operations which decode content data transmitted according to the request into the buffer memory 15 and then decode it into audio and video.

On the other hand, in the CPI 14, when a search operation is requested by the user (S15), the search table information is searched and an arbitrary search point is determined by referring to the playback time at the present time. (S17).

For example, as shown in FIG. 4, when a forward jump operation is requested while reproducing content data corresponding to a middle portion of the first search point P1 and the second search point P2, In the CPI 14, a jump to the second search point P2 corresponding to the next playback time (eg, 2:00 to 2:05) after the current playback time is determined.

The second search point data stored in the storage 17 is immediately reproduced by referring to the address (Address #) information of the second search point recorded in the search table information (S17), and the second search is performed. After transmitting the information of the playback time (for example, 2:00 to 2:05) of the point to the content providing server 200, the content data of the playback time is requested and received thereafter (S18).

In addition, the content data after the second search point received through the above process is buffered in the buffer memory 15, and the operation is controlled to decode the audio data such as audio and video. The operation is connected and reproduced after the second search point data (S19).

On the other hand, in the CPI 14, as shown in FIG. 4, while playing the content data corresponding to the middle portion of the third search point P3 and the fourth search point P4, the backward (Backward) When the jump operation is requested, the jump to the third search point P3 that is before the current playback time and corresponds to the closest playback time (eg, 3:00 to 3:05) is determined.

The third search point data stored in the storage 17 is immediately reproduced by referring to the address (Address #) information of the third search point recorded in the search table information, and the reproduction of the third search point is performed. After transmitting time (for example, 3: 00-3: 05) information to the content providing server 200, thereafter, content data of a reproduction time is requested and received.

In addition, the content data after the third search point received through the above process is buffered in the buffer memory 15, and the operation is controlled to decode the audio data such as audio and video. The operation is connected to and reproduced after the third search point data.

And, until the end of playback is requested (S20), the above-described trick play (Trick Play) of the jump operation is performed, so that the user who received and watched the content such as the V-audio title in real time request of the jump operation The trick play can be processed more quickly, without user waiting time.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. , Alteration, substitution, addition, or the like.

Figure 1 shows the configuration of an embodiment for a network video player to which the present invention is applied,

2 illustrates a configuration of an embodiment of search table information stored and managed according to the present invention.

3 is a flowchart illustrating an embodiment of a content trick play control method according to the present invention;

4 illustrates an embodiment in which a forward jump and a backward jump are performed according to the present invention.

[Description of Drawings]

10: optical disc 11: optical pickup

12 digital signal processor 13 decoder

14: CPI 15: Buffer Memory

16: OSD generation unit 17: storage

18: network module 100: network video player

200: content providing server

Claims (10)

When a certain amount of content data downloaded from a content providing server is buffered, a decoding operation is performed, and while performing the decoding operation, an interface with the content providing server is requested to request and receive search point data at a predetermined time interval. Step 1 to do; Storing and storing the received search point data in storage, and generating and recording search table information for accessing the search point data; And And a step of retrieving the search table information and immediately reproducing any one search point data stored in the storage when a jump operation is requested while playing the content data. . The method of claim 1, And one or more of each search point number, a reproduction time, and address information in the storage in which the search point data is recorded are stored and managed in the form of a lookup table in the search table information. 3. The method of claim 2, In the third step, if a forward jump operation is requested while the content data is being played, the content trick play is characterized by immediately reproducing the search point data of the next closest play time after confirming the play time of the content data at that time. Control method. 3. The method of claim 2, In the third step, if a backward jump operation is requested while playing the content data, the content trick is characterized by immediately reproducing the search point data of the nearest previous play time after confirming the play time of the content data at the time. Play control method. 3. The method of claim 2, In the step 3, the search point data is immediately reproduced. During the playback operation, the search point is requested and received after the content data based on the playback time of the search point data. Content trick play control method characterized in that the connection and playback following the data. Communication means for communicating with a content providing server; Buffering means for temporarily storing content data downloaded from said content providing server; Decoding means for decoding if a predetermined amount of content data is temporarily stored in the buffering means; And During the decoding operation, through the interface with the content providing server, search point data of a predetermined time interval is requested and received, stored in storage, and generating search table information for accessing the search point data. Records management, And a control means for retrieving the search table information and immediately reproducing any one search point data stored in the storage when a jump operation is requested while reproducing the content data. controller. The method of claim 6, And one or more of each search point number, a reproduction time, and address information in the storage in which the search point data is recorded are stored and managed in the form of a look-up table in the search table information. The method of claim 7, wherein When the forward jump operation is requested while the content data is being reproduced, the control means checks the reproduction time of the content data at the time and immediately reproduces the search point data of the next adjacent reproduction time. controller. The method of claim 7, wherein When the backward jump operation is requested while the content data is being reproduced, the control means checks the reproduction time of the content data at that time and immediately reproduces the search point data of the nearest previous reproduction time. Play control device. The method of claim 7, wherein The control means immediately reproduces the search point data, and during the reproducing operation, requests and receives and buffers content data thereafter based on the playback time of the search point data, and then buffers the search point. And a content trick play control device for connecting and playing back data.

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