JP2006245907A - Broadcast recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast recording and reproducing apparatus capable of easily finding the beginning of a desired scene and reproducing it. <P>SOLUTION: When reproducing a caption list display request, a system control section 103 reads a caption recording table from a received signal section 106 to display a caption list for a user. While the caption list is displayed, the user can carry out caption searching and word searching. When the caption searching is selected, the user selects a desired caption from a caption list display menu. The user acquires a display time with respect to the caption selected from the caption recording table and carries out finding of the caption at the display time and reproduces the caption. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a broadcast recording / reproducing apparatus that records and reproduces subtitle broadcasts, and more particularly to a broadcast recording / reproducing apparatus that can easily search for a desired scene.

  In a broadcast recording / reproducing apparatus, there are many users who want to watch a desired scene while playing a program.

  In the conventional broadcast recording / reproducing apparatus, although it is possible to start a program unit, it is necessary to search for a desired scene by fast-forward reproduction.

  In addition, an apparatus has been developed that displays a video at regular intervals as a still image and allows a user to select a video start point.

According to Patent Document 1 ("Japanese Patent Laid-Open No. 2003-23607"), the subtitles of several past scenes and the start points of subtitles are stored retroactively from the current scene, and the normal subtitles are returned to the start point of the desired subtitles. A technique for resuming playback is disclosed.
JP 2003-23607 A

  However, the conventional broadcast recording / reproducing apparatus has a problem that it is necessary to check the contents of the program by low-speed fast-forwarding from the start of the program by fast-forwarding reproduction, which takes time.

  In addition, the function of displaying a video as a still image at regular intervals also has a problem that it is difficult to confirm whether or not a desired scene is obtained with only a still image.

  In the invention disclosed in Patent Document 1, it is possible to return to a past subtitle, but there is no means for searching for an arbitrary scene.

  The present invention has been made in view of such a situation. By searching for a scene using subtitles, it is possible to surely start a desired scene. It is another object of the present invention to provide a broadcast recording / reproducing apparatus that also has a function of searching for words in subtitle sentence data in order to facilitate scene search.

  In order to solve such problems, the present invention adopts the following technical configuration and has the following features.

  A broadcast recording / reproducing apparatus according to the present invention is a broadcast recording / reproducing apparatus for receiving, recording, and reproducing a digital broadcast including subtitle information, and analyzes the subtitle information and outputs it as character information Display time information extracting means for extracting subtitle display time information from the subtitle information, means for storing the subtitle information and the subtitle display time information in association with each other, and the subtitle information stored by the storage means A list display unit, a unit for selecting a desired subtitle from the displayed subtitle information, and playing back the stored video corresponding to the display time information stored in association with the subtitle information selected by the selection unit And a means for causing the above to occur.

  The broadcast recording / reproducing apparatus according to the present invention is characterized by comprising means for searching for a desired word from stored caption text data and means for marking the searched word.

  The broadcast recording / playback apparatus according to the present invention further includes means for displaying a video corresponding to the display time information of the caption text as a still image when the cursor is moved to an arbitrary caption while searching for a scene by the caption text. It is characterized by providing.

  According to the broadcast recording and reproducing apparatus according to the present invention, the user can surely search for a desired scene by viewing a list of subtitle sentences of a program and viewing the subtitle sentences.

  The broadcast recording / playback apparatus according to the present invention can search for a desired word from stored caption text data, and can mark a searched word, so that a desired scene can be selected. It becomes possible to search more efficiently.

  In addition, when viewing a subtitle sentence list of a program, video corresponding to the display time information of the subtitle sentence can be displayed as a still image. Can be searched more reliably.

  An embodiment of a broadcast recording / reproducing apparatus according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a block diagram showing an embodiment of a broadcast recording / reproducing apparatus according to the present invention.

  As shown in the figure, a broadcast recording / reproducing apparatus 10 according to the present embodiment includes an antenna unit 100 that receives a terrestrial television signal, BS, and CS digital television signal, and a terrestrial television signal or BS, CS digital television signal. A tuner demodulator 101 that receives radio waves, a channel selector 102 that controls a reception channel of the tuner demodulator, and a digital signal that is selected by the tuner demodulator 101, encoded video signal, audio signal, and caption information A multiplex signal separating unit 105 for separating the separated audio signal, an audio decoding unit 107 for decoding the separated audio signal into the original audio signal, and a video decoding unit 108 for decoding the separated video signal into the original video signal. It is configured.

  In addition, the subtitle information analysis unit 109 that analyzes the subtitle display time and the subtitle sentence body necessary for synchronizing the display of the video and the subtitles from the subtitle information separated by the multiplexed signal demultiplexing unit 105, and the subtitle information analysis unit 109 The analyzed caption information display time is monitored, the caption control unit 110 that instructs the caption display, and the video signal decoded by the video decoding unit 108 and the caption text decoded by the caption information analysis unit 109 are combined and displayed. An OSD (on-screen display) processing unit 111, an audio output terminal 112 decoded by the audio decoding unit 107, and an output terminal 113 of a video signal processed by the OSD processing unit 111 are configured.

  Furthermore, the audio output from the audio decoding unit 107 and the video output from the OSD processing unit 111 are recorded, or the recording unit 106 that outputs the recorded audio and video to the output terminal, the entire system, and the channel selection. The local unit 102 has a receiving channel instruction, an audio / video output instruction recorded in the recording unit 106, a recording / reproduction instruction, and the like, and a part that processes input from the remote control and the control panel. A remote control for transmitting a signal to the system control unit 103 and a control panel input processing unit 104.

  Next, the data structure of the video signal, audio signal, and caption information transmitted in digital broadcasting will be described.

  FIG. 2 is a diagram illustrating a configuration of a data stream in digital broadcasting.

  In digital broadcasting, MPEG-2 TS (Transport Stream) is used as a transmission method. All data used in video signals, audio signals, and data broadcasts are transmitted in TS packets 201.

  In particular, the video signal, the audio signal, and the caption information are encoded and compressed into ES (Elementary Stream) to become a caption ES202, a video ES203, and an audio ES204. Each ES is packetized in a PES format to which a PES header 205 indicating display time information (time stamp) is added. It is possible to synchronize reproduction of each packet by the time stamp.

  For example, when there is a program recording request from the remote control and control panel input processing unit 104, the recording unit 106 associates the subtitles of the recorded program with the display time information of each subtitle under the control of the subtitle control unit 110. Remember. At this time, the subtitles of the recorded program and the display time information of each subtitle are stored in a table format. FIG. 3 is a diagram illustrating an example of a table stored in the storage unit 106. The table shown in FIG. 3 shows display time information 301 read from the PES header and caption information 302 corresponding to the display time.

  Next, an operation from displaying a subtitle list during playback of a recorded program and starting playback of a scene corresponding to the desired subtitle will be described.

  FIG. 4 is a flowchart for explaining an operation from displaying a subtitle list during playback of a recorded program to starting playback of a scene corresponding to the desired subtitle.

  The system control unit 103 detects a subtitle list display request from the user during playback of the recorded program (step S1). When there is a subtitle list display request (step S1; Yes), the system control unit 103 reads the subtitle recording table shown in FIG. 3 from the recording unit 106 and displays a subtitle list to the user (step S2). While displaying the subtitle list, the user can perform subtitle search and word search. In step S3, subtitle search or word search is selected. When subtitle search is selected, the user selects a desired subtitle from a subtitle list display screen shown in FIG. 5 described later (step S4). The display time for the selected subtitle is acquired from the subtitle recording table, and the heading reproduction of the display time is performed (step S5). When word search is selected in step S3, the user selects a desired word on a caption list display screen shown in FIG. 6 to be described later (step S6). The selected word is searched from the subtitle list (step S7), and the search result is displayed to the user (step S8). When the word search is ended by the operation of the remote controller 104 by the user (step S8), the selection information is transmitted to the control unit 103 as to whether the word search is performed again or the subtitle search is performed based on the search result.

  FIG. 5 is a diagram illustrating a screen display example when a caption search is performed using the caption list information of FIG.

  As shown in FIG. 5, all subtitles 501 of the program being reproduced are displayed.

  If captions cannot be displayed on the screen, the screen is switched using the cross key of the remote controller 104. In FIG. 5, subtitles that cannot be displayed can be confirmed by selecting the next page switching icon 502 with the cursor of the remote controller 104.

  Furthermore, the user can select the subtitle search icon 504 and the word search icon 505 by remote control operation. The selected icon is made recognizable by the user by changing the background color or the character color (mark). If subtitle search 504 is selected, the user selects a desired subtitle using the up and down keys of the remote controller 104. The subtitle 503 selected by the user can be recognized by the user by changing the color of the background or the color of the character (mark).

  Thus, when a caption is selected, the display time can be read from the storage table of FIG. 3 and reproduction from the display time can be started.

  When the word search is selected, the word search icon 505 is activated as shown in FIG. Reference numeral 601 denotes a cursor for word search, and a word start point is selected by using the up and down keys of the remote controller 104. The start point of the word is determined by moving the cursor to the start point of the word and pressing the enter key or the like on the remote control 104. Next, the word selection is completed by moving the cursor 602 to the end point of the word and determining it. As shown in FIG. 6B, the selected word 603 is easy to be confirmed by the user by changing the character of the word or the color of the background. When the execution icon 604 is selected, the selected word is searched in the subtitle list. The search result may be a method of enumerating and displaying subtitles including words by changing the character color or background color of the corresponding word.

  In this way, subtitle search can be efficiently performed by using the word search result.

  When the cursor is moved to the subtitle in the subtitle search, a function for displaying the video at the display time of the subtitle as a still image is provided. Thereby, the retrieval of the scene desired by the user is made more reliable. It is conceivable to display this still image so as to overlap the subtitle list or to display it on a sub-screen.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

It is a functional block diagram which shows embodiment of the broadcast recording / reproducing apparatus by this invention. It is a figure which shows the structure of the data stream in digital broadcasting. It is a figure which shows an example of the storage table of the caption information memorize | stored in the recording process of a program. It is a flowchart which shows an example of the cueing reproduction | regeneration process by subtitle search at the time of reproduction | regeneration of a recorded program. It is a figure which shows the example of a screen display at the time of performing a subtitle search using the subtitle list information of FIG. It is a figure which shows the example of a screen display at the time of performing a word search using the title list information of FIG. (A) is a figure which shows the example of a screen display as which the word search icon 505 became an active state. (B) is a figure which shows the example of a screen display made easy for a user to confirm by the character of the selected word, the color of a background, etc. changing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Broadcast recording / reproducing apparatus 100 Broadcast receiving antenna 101 Tuner demodulation part 102 Channel selection part 103 System control part 104 Remote control and control panel input process part 105 Multiplex signal demultiplexing part 106 Recording part 107 Audio decoding part 108 Video decoding part 109 Subtitle analysis part 110 Subtitle control unit 111 OSD processing unit 112 Audio output terminal 113 Video output terminal 201 Transport stream 202 Subtitle ES
203 Video ES
204 Voice ES
205 PES header 301 Display time information 302 Subtitle 501 Subtitle 502 Next page switching icon 503 Selected subtitle 504 Subtitle search 505 Word search 601 and 602 Cursor for word search 603 Selected word 604 Execution icon

Claims (3)

A broadcast recording / reproducing apparatus for receiving, recording, and reproducing a digital broadcast including subtitle information,
A subtitle analysis unit that analyzes the subtitle information and outputs it as character information;
Display time information extraction means for extracting subtitle display time information from the subtitle information;
Means for associating and storing the caption information and the display time information of the caption;
Means for displaying a list of the subtitle information stored by the storage means;
Means for selecting a desired subtitle from the displayed subtitle information;
Means for reproducing the stored video corresponding to the display time information stored in association with the caption information selected by the selection means;
A broadcast recording / reproducing apparatus comprising:   2. The broadcast recording / reproducing apparatus according to claim 1, further comprising means for searching for a word from the stored caption text information, and means for marking the searched word.   2. The apparatus according to claim 1, further comprising means for displaying the stored video corresponding to the display time information of the subtitle as a still image when the cursor is moved to an arbitrary subtitle on the subtitle information list display. Item 3. The broadcast recording / reproducing apparatus according to Item 2.

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