JP4851909B2 - Video recording apparatus and program - Google Patents

Description

  The present invention relates to a video recording apparatus and a program for sequentially recording digital video data.

Conventionally, as a technology for receiving and recording a television broadcast and reproducing and outputting the recorded content, for example, a technology for extracting and highlighting an important scene from the recorded content after receiving and recording the television broadcast Is known (see Patent Document 1). In addition, after receiving and recording a TV broadcast, a subtitle list with the subtitles included in the recorded content as an index is displayed and output, and the video is reproduced from the corresponding subtitles arbitrarily selected from the subtitle list screen. A technique is known (see Patent Document 2). Furthermore, after receiving and recording a television broadcast, when reproducing the recorded content, a technique is known in which a keyword arbitrarily specified by the user is reproduced while jumping to the video included in the subtitle ( (See Patent Document 3).
JP 2006-180306 A JP 2004-80476 A JP-A-10-285528

 However, in the technology of Patent Document 1 described above, the recorded contents are sequentially analyzed, and for example, a volume part having a large volume, a video part having a large movement, and a video part including a specific keyword are extracted as important scenes. Analysis of the recorded content will increase time and power consumption. In the techniques of Patent Documents 2 and 3 described above, the subtitle portion is used to jump to a location desired by the user at the time of playback. After the playback jump, the normal playback operation is resumed. If the user wants to view the desired scene immediately, the user himself / herself needs to give a jump instruction, resulting in complicated operation.

  An object of the present invention is to make it possible to realize digest recording for sequentially recording a video portion in which a caption is inserted together with the caption when digital video data is sequentially recorded.

The invention according to claim 1 is a video recording apparatus for sequentially recording digital video data, wherein video data portions of moving images into which subtitles are inserted based on subtitle data separated from the video data are sequentially used as subtitle portions. specifying means for specifying, every time the subtitle part is sequentially identified by the identifying means, acquisition means for acquiring image data of the subtitle data and the still image corresponding to this caption part, subtitle portion where the previous SL specifying means specified in addition to the video image data to generate a still image of the video data, and determining means for determining in accordance with the display time for reproducing and displaying the video data of the still image data of the subtitle data, by the acquisition means Subtitle data and video data obtained for each subtitle portion are recorded in association with each other, and each decision portion is associated with the video data of the still image for each subtitle portion. The recording means for recording the display time determined by the recording medium, the remaining amount detection means for detecting the remaining amount of memory for recording, and the recording method is selected based on the predetermined information, and the recording operation corresponding to the selected recording method is executed. Recording method selection means for performing recording, wherein the recording means sequentially records the video data of the moving image and the caption data thereof, and the video for each subtitle portion from the video data of the moving image. And a second recording method for recording data and subtitle data in association with each other, and the recording method selection unit selects the first recording according to the remaining memory amount detected by the remaining amount detection unit. Instead of the method, the second recording method is selected and a recording operation according to the method is executed .
The invention according to claim 2 is a video recording apparatus for sequentially recording digital video data, wherein video data portions of moving images into which subtitles are inserted based on subtitle data separated from the video data are sequentially used as subtitle portions. A specifying unit for specifying, an acquisition unit for acquiring subtitle data corresponding to the subtitle part and video data of a still image each time a subtitle part is specified by the specifying unit, and a subtitle part specified by the specifying unit In addition to generating still image video data from moving image video data, a determination means for determining a display time for reproducing and displaying the still image video data according to the data amount of the caption data, and subtitles by the acquisition means The subtitle data and the video data obtained for each part are recorded in association with each other, and each decision part is associated with the video data of the still image for each subtitle part. Recording means for recording the determined display time, and recording method selection means for selecting a recording method based on predetermined information and executing a recording operation according to the selected recording method. A first recording method for sequentially recording video data and subtitle data of a moving image, and a second recording for recording the video data and subtitle data in association with each subtitle portion from the video data of the video The recording method selection means rewrites the recorded content by executing a recording operation according to the second recording method on the recorded content recorded by the first recording method. It is characterized by performing.
Furthermore, a program for realizing the main functions shown in the inventions described in claims 1 and 2 is provided to the computer (inventions described in claims 7 and 8).

In the video recording apparatus, the specifying unit sequentially receives the subtitle portion while separating video data and subtitle data of the video from the received content when receiving the digital broadcast on which the subtitle data is superimposed and recording the video. You may specify (invention of Claim 3 ).

The video recording apparatus further includes a selection instruction receiving unit that receives a selection instruction, and when the selection instruction receiving unit receives the first selection instruction, the determination unit is configured to display the moving image of the subtitle portion specified by the specifying unit. Still image video data is generated from the video data, and a display time for reproducing and displaying the generated still image video data is determined according to the data amount of the caption data. The subtitle data obtained for each portion and the video data of the still image are recorded in association with each other, and the determined display time is recorded in association with the video data of the still image for each subtitle portion, and the selection instruction is accepted. When the means accepts the second selection instruction, the obtaining means obtains video data of the moving image of the subtitle portion, and the recording means uses the subtitle portion by the obtaining means. It may be recorded in association with image data obtained subtitle data and video (the invention described in claim 4).

3. The recording method selecting unit according to claim 2 , wherein the recording method selection means rewrites the recording content recorded by the first recording method to the recording content according to the second recording method, and sets the rewriting target as a video type. The selection may be made on the basis of (the invention according to claim 5 ). The recording method selection means selects the rewriting target based on the recording date and time when rewriting the recording content recorded by the first recording method to the recording content according to the second recording method. (Invention of claim 6 ).

  The present invention acquires subtitle data and video data from the subtitle portion each time the video data portion into which the subtitle is inserted is sequentially specified as the subtitle portion based on the subtitle data separated from the video data as digital data. By recording subtitle data and video data in association with each other, it is possible to perform digest recording in which the video portion in which the subtitle is inserted is recorded sequentially along with the subtitle. It becomes possible to grasp the whole easily.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This embodiment exemplifies a case where the present invention is applied to a mobile phone device with a TV reception function as a video playback device, and FIG. 1 shows basic components of the mobile phone device with a TV reception recording / playback function. It is a block diagram.
This mobile phone device includes a telephone function, a mail function, an Internet connection function (Web access function), a TV reception function for receiving a digital TV broadcast, a recording function for recording (including recording) the received TV broadcast, It has a playback function for playing back and outputting recorded contents of TV broadcasts and recorded contents externally supplied from the Internet.

  The CPU 1 is a core central processing unit that controls the overall operation of the mobile phone device in accordance with various programs in the storage unit 2. The storage unit 2 is an internal memory, and has a program area and a data area. In this program area, a program for realizing the present embodiment according to an operation procedure shown in FIGS. In the data area, a still image table TA, a character number table TB, a genre table TC, a moving image content MC, and the like, which will be described later, are stored. The external recording medium 3 is a detachable portable memory that supplies various data programs such as recorded contents to the outside. For example, the external recording medium 3 includes an SD card, an IC card, and the like. The memory 4 is an internal memory having a work area, and various data in the memory 4 is saved in the storage unit 2 as necessary.

  The telephone communication unit 5 takes in a signal from the reception side of a transmission / reception unit (baseband unit) connected to an antenna constituting the radio unit, demodulates it to a reception baseband signal, and then receives a reception speaker via the acoustic control unit 6. 7 to output sound. In addition, the telephone communication unit 5 takes in the voice data input from the transmission microphone 8 from the acoustic control unit 6, encodes it into a transmission baseband signal, gives it to the transmission side of the transmission / reception unit, and outputs it from the antenna. . On the other hand, the video content received and acquired via the telephone communication unit 5 by the Internet connection function or the like is given to the main display unit 10 such as an LCD (Liquid Crystal Display) via the display control unit 9 and displayed and output. The sub display unit 11 displays the current date and time, a simple message, an icon, and the like.

  The display unit 10 is an LCD (Liquid Crystal Display) or the like that can display a television broadcast with high image quality, and the key operation unit 12 performs dial input, character input, command input, and the like. A start / stop key and the like are provided, and the CPU 1 executes processing according to a key input signal from the key operation unit 12. The TV broadcast receiving unit 13 receives terrestrial digital TV broadcasts for portable receivers such as mobile phones, and can receive not only TV video and audio information but also an electronic program guide (EPG). The TV video data and the character data are displayed and output from the display unit 10, and the TV sound data is output from the sound speaker 14.

  The television broadcast receiver 13 has the configuration shown in FIG. The TV broadcast receiving unit 13 is connected to a TV antenna (not shown), selects a reception channel according to a user operation, extracts a broadcast signal of the station, and receives the broadcast signal by OFDM (orthogonal). Frequency division multiplexing) A multiplexed signal separation unit 13B that demodulates or separates a multiplexed broadcast signal into video, audio, and data (character data), and a video signal and audio separated by the multiplexed signal separation unit 13B. The video signal decoder unit 13C, the audio signal decoder unit 13D, and the character signal decoder unit 13E are provided for decoding signals and character signals while analyzing them and decompressing compressed data.

  When receiving a recording instruction such as a reserved recording of a television broadcast, the CPU 1 executes a recording operation for recording the broadcast reception content in accordance with the recording instruction, and stores a moving image recording file (moving image content) in the storage unit 2 or the external recording medium 3. ) Is stored. Here, when a broadcast with subtitles is received, the recording method “digest recording” for recording by jumping the received content other than the subtitle portion is instructed, or the other normal recording method “normal recording” is instructed When “normal recording” is instructed, a recording operation for sequentially recording the broadcast reception contents is executed, but when “digest recording” is instructed, subtitles are received from the broadcast reception contents. While specifying the portion, digest recording for recording the caption data and video data is executed for each caption portion.

 That is, when video recording is performed by receiving a digital broadcast on which caption data is superimposed and video recording is specified, video data into which captions are inserted based on caption data separated from the video data Are sequentially specified as subtitles, and the subtitle data and video data of the subtitles are recorded in association with each other. For digest recording, there are two types of recording methods, “still image digest” shown in FIG. "And a" video digest "shown in FIG. “Still image digest” is a recording method for recording a still image generated from a moving image included in a subtitle portion every time a subtitle portion is specified. In FIG. 3, the hatched portion indicates the identified caption portion, and (1), (2),... Indicate the identification order.

 In this case, the video signal received by the television broadcast receiver 13 is a signal that has been compression-encoded by a moving image compression method (MPEG), and the video signal separated from the broadcast signal by the multiplexed signal separator 13B is frame-by-frame. At the time of decoding, the video signal decoder unit 13C extracts a specific frame, for example, an I frame (a frame in which one image is independently compressed) that appears first in the caption portion, and generates a still image video. I have to. In this case, a plurality of I frames included in the subtitle portion may be extracted, but in this embodiment, a still image video (still image video of a subtitle insertion start scene) that appears first in the subtitle portion is extracted. Yes.

 “Movie digest” is a recording method in which each time a subtitle portion is specified, a moving image included in the subtitle portion is sequentially recorded together with the subtitle data. In FIG. 4, the hatched portion indicates the specified caption portion, and (1), (2),... Indicate the specifying order. Here, every time the subtitle portion is specified from the broadcast reception content, the CPU 1 extracts the subtitle data together with the moving image included therein, and sequentially records the subtitle data, so that the recording amount is (1), (2), It becomes much more compact than "normal recording".

FIG. 5 is a diagram for explaining the still image table TA.
This still image table TA is a table created in response to a recording instruction of “still image digest”, and is configured to sequentially store “still image video data”, “subtitle data”, and “playback time” for each subtitle portion. It has become. “Still image video data” is a still image generated from a moving image included in a subtitle portion each time a subtitle portion is specified. “Subtitle data” is character string data included in the subtitle portion every time the subtitle portion is specified. “Playback time” is a time for continuously displaying video data and subtitle data of the subtitle portion, and a time corresponding to the number of characters constituting the subtitle is set. Each time a subtitle portion is specified, “still image video data”, “subtitle data”, and “reproduction time” are sequentially stored in the still image table TA.

FIG. 6 is a diagram for explaining the character number table TB.
The number-of-characters table TB is a table that is referred to when obtaining the “reproduction time” of the still image table TA, and is configured to store “number of subtitle characters” and “reproduction time” in association with each other. That is, “2 seconds” is set as “playback time” when “number of subtitle characters” is “1-10”, “4 seconds” when “11-20”, “6 seconds” when “21-30”. , ... are set. In this case, when storing still image video data in the still image table TA, the CPU 1 counts the number of characters constituting the “subtitle data” and searches the character number table TB based on the counted value (number of subtitle characters). The corresponding “reproduction time” is determined as the display time of the “subtitle data” and “still image video data”.

FIG. 7 is a diagram for explaining the moving image content MC.
This moving image content MC is recorded content generated by normal recording (sequential recording) of the broadcast content received from the TV broadcast receiving unit 13 or externally supplied moving image content, and is stored in the storage unit 2 or the external recording medium 3. Are stored in a recording memory (not shown). This moving image content MC is stored and managed by being divided into data areas corresponding to moving image video data, audio data, and character (caption) data. Of the various moving image contents MC stored in the storage unit 2 or the external recording medium 3, an old moving image content MC that has been stored for a predetermined period (for example, two weeks or more) has been stored as a still image. Digest (compact) is made. That is, the amount of recording is greatly reduced by converting the content of the normally recorded moving image content MC into a still image digest.

FIG. 8 is a diagram for explaining the genre table TC.
The genre table TC is referred to when determining whether or not the stored moving image content MC is to be converted into a still image digest (compact) according to the genre, and is compact corresponding to each genre. It is the structure which memorize | stores the information which shows the possibility of conversion. For example, in the figure, “○” indicates that compactification is affirmed, “×” indicates that it is denied, and “○” is set corresponding to “drama”, “sports”, “news” “X” is set corresponding to “movie”.

Next, the operation concept of the cellular phone device in this embodiment will be described with reference to the flowcharts shown in FIGS. Here, each function described in these flowcharts is stored in the form of a readable program code, and operations according to the program code are sequentially executed. In addition, the operation according to the above-described program code transmitted via the transmission medium can be sequentially executed. In other words, in addition to the recording medium, an operation peculiar to this embodiment can be executed by using a program / data supplied externally via a transmission medium. Incidentally, FIGS. 9 to 12, of the overall operation of the mobile phone device, a flow chart showing an operation outline of the features of the present embodiment, when it comes out of the flow of FIGS. 9-12, the entire Returning to the operation flow (not shown).

9 and 10 are flowcharts showing a recording application process that is started in response to an instruction operation for instructing recording of a television broadcast.
First, the CPU 1 displays and outputs a recording menu in response to a recording instruction (step A1). This recording menu screen displays a list of “1: normal”, “2: still image digest”, and “3: video digest” as menu items indicating the recording method, and an arbitrary menu item can be selected and designated from the list. If so (step A2), the selection menu is discriminated and it is checked whether “1: normal” has been selected (step A3).

 If the menu item “1: normal” is selected and normal recording is designated (YES in step A3), the program to be recorded is referred to with reference to the electronic program table (EPG) acquired in advance. In addition to obtaining the broadcast time, the remaining memory for recording (for example, the recordable time when recording with standard image quality) is detected, and this broadcast time is compared with the remaining memory (recordable time) ( Step A4), it is checked whether all of the current broadcast program can be recorded until the end, that is, whether full recording is possible (Step A5).

 If full recording is possible, a recording operation for recording the broadcast content received by the television broadcast receiver 13 is started (step A6), and then an end operation for instructing the end of recording or an end of the program is instructed. Whether there is an end instruction (step A7), whether there is no remaining memory (step A8), until there is an end operation / end instruction (YES in step A7), or until no remaining capacity is detected (step A7) In step A8, YES), the recording operation for sequentially recording the broadcast contents is repeated.

 On the other hand, if full recording is impossible with the current remaining memory capacity (NO in step A5), a confirmation message for reconfirming the recording method is displayed and output, and a recording menu is displayed and output (step A9). When an arbitrary menu item is selected and specified from this menu screen (step A10), the selected menu is discriminated, it is checked whether “1: normal” is selected (step A11), and “1: normal”. When the menu item is selected and normal recording is specified (YES in step A11), the recording operation is started (step A6), and then the broadcast content is recorded until an end instruction or no remaining amount is detected. (Steps A7 and A8).

 If a menu other than “1: normal” is selected (NO in step A3 or A11), the process proceeds to the flow of FIG. 10, and either “2: still image digest” or “3: video digest” is selected. It is checked whether it has been selected (step A12). When the menu item “2: still image digest” is selected and still image digest recording is designated, the broadcast content received by the TV broadcast receiving unit 13 is sequentially decoded. Each time, the decoding result is checked (step A13).

 In this case, on the television broadcast receiver 13 side, the multiplexed signal separator 13B separates the broadcast signal into video, audio, and character data, and the video signal decoder 13C, audio signal decoder 13D, and character signal decoder 13E The operation of decoding the separated video signal, audio signal, and character signal is started. At that time, the CPU 1 starts the subtitle insertion start scene (subtitle portion of the subtitle portion) based on the character (subtitle) data separated from the broadcast reception content. It is checked whether it is the first scene) (step A14). In this case, the presence or absence of character data is examined while analyzing the character data, and the scene in which the character appears is specified as the subtitle insertion start scene.

 If it is not a subtitle insertion start scene, the process proceeds to step A17. If it is a subtitle insertion start scene (YES in step A14), “still image video data” and “subtitle data” of the scene are associated with each other. Record in the still image table TA (step A15). Then, the number of characters constituting the subtitle data is counted, the character number table TB is searched based on the counted value (number of subtitle characters), a “reproduction time” corresponding to the number of subtitle characters is determined, and the reproduction time is set as the “subtitle” It is recorded in the still image table TA in association with “data” and “still image video data” (step A16). Thereafter, it is checked whether there is an end operation for instructing the end of recording or an end instruction for instructing the end of the program (step A17), and the process returns to step A13 until an end operation or an end instruction is issued, and each time a subtitle insertion start scene is detected. In addition, the operation of recording the “reproduction time” together with the “still image video data” and “caption data” in the still image table TA is repeated.

 When the menu item “3: video digest” is selected and video digest recording is specified (NO in step A12), the broadcast content received by the TV broadcast receiver 13 is the same as described above. The contents are sequentially decoded and checked (Step A18). If the scene is a caption insertion start scene (first scene of the caption section) (YES in Step A19), the recording operation is started from this scene (Step A20). Further, the received content is sequentially decoded and checked (step A21). If it is a subtitle insertion end scene (the end scene of the subtitle portion) (YES in step A22), the recording operation is stopped (step A23). . Thereafter, it is checked whether there is an end operation for instructing the end of recording or an end instruction for instructing the end of the program (step A24), and the process returns to step A18 until an end operation or an end instruction is issued. The operation of recording the moving image from the caption insertion start scene to the end scene is repeated.

FIG. 11 is a flowchart showing the operation when the moving image content MC is downsized (still image digest).
First, in response to an instruction operation for instructing downsizing of the moving image content MC, the CPU 1 saves the moving image content MC stored in the storage unit 2 or the external recording medium 3 for a predetermined period or longer. It is determined whether there is an old video content MC that has passed (for example, two weeks or more) (step B1), and if there is an old video content MC, one of them is designated as the corresponding content (step B2).

 Then, based on the type added to the designated content, the genre table TC is referred to determine whether or not compaction (digesting) is possible (step B3). After specifying the content on the condition that there is content (step B2), it is determined whether or not compaction is possible based on the type of the specified content (step B3). The content is specified as the content to be compacted (step B4). Thereafter, the above-described operation is repeated until all the corresponding contents are designated (step B5).

 After designating any one of the contents to be compactified thus identified (step B10), the contents of the designated content are checked (step B11), and it is checked whether it is a subtitle insertion start scene (step B11). B12). In this case, the presence / absence of character data is examined while analyzing the contents (character data) of the designated content, and the scene where the character appears is specified as the subtitle insertion start scene. If it is not a subtitle insertion start scene, the process proceeds to step B15. If it is a subtitle insertion start scene (YES in step B12), “still image video data” and “subtitle data” of this scene are associated with each other. Record in the still image table TA (step B13). Then, the number of characters constituting the subtitle data is counted, the character number table TB is searched based on the counted value (number of subtitle characters), a “reproduction time” corresponding to the number of subtitle characters is determined, and the reproduction time is set as the “subtitle” It is recorded in the still image table TA in association with “data” and “still image video data” (step B14).

 Thereafter, it is checked whether or not the end position of the designated content has been reached (step B15). The process returns to step B11 until the end position is reached, and every time a caption insertion start scene is detected, the “still image video data” and “caption data” ”And the operation of recording the“ reproduction time ”in the still image table TA. After downsizing one moving image content MC (still image digest), the presence or absence of other target content is checked (step B16), and the process returns to step B10 until all the target content is compacted. repeat.

 On the other hand, as a result of determining whether or not there is an old video content MC that has passed a predetermined period (for example, two weeks or more) since the storage (step B1), if there is no old video content MC, the process proceeds to step B6, and the video Based on the type added to the content MC, the genre table TC is referenced to check whether there is a content that can be made compact. As a result, if no corresponding content exists, a guidance message indicating that compactification is impossible is displayed and output (step B17). If the corresponding content exists (YES in step B6), Along with the content name, a list of the types is displayed (step B7).

 Then, it is checked whether or not any content is selected and specified from the list screen (step B8). If no content is selected, it is determined that all the moving image contents MC are specified to be stored as they are. Then, the process proceeds to step B17 to display and output a guidance message indicating that compactification is impossible. If any content is selected (YES in step B8), this selected content is designated as the content to be compacted. After that (step B9), the above operation is repeated (steps B10 to B16). As a result, the arbitrarily selected moving image content MC is made compact (still image digest).

FIG. 12 is a flowchart showing content reproduction processing.
First, in addition to the moving image content MC stored in the storage unit 2 or the external recording medium 3, the CPU 1 displays and outputs a content menu including a still image digest and a moving image digest (step C1). When any content is selected and designated as a playback target (step C2), it is checked whether the selected content is a moving image (step C3). That is, it is checked whether the selected content is the moving image content MC or the moving image digest. If the reproduction target is a moving image, moving image reproduction for sequentially reproducing the content is started (step C4). Then, the moving image reproduction is continued until an end operation for instructing the end of reproduction or an instruction for ending the content (step C5).

If the content selected as the reproduction target is a still image digest ( NO in step C3), “subtitle data” and “still image video data” are read from the head position of the still image table TA and displayed (step S3). Step C6). After starting the digest reproduction of the subtitled video in this way, it is checked whether or not the “reproduction time” has elapsed (step C7), and when the sending operation is performed before the reproduction time has elapsed (YES in step C8). Then, the still picture table TA is accessed to check whether or not there is a next still picture (step C9).

 That is, it is checked whether or not all the contents of the still image table TA have been displayed. If the next still image video is not displayed, the still image video is designated (step C10), and then the process returns to the above-mentioned step C6. Display with data. If the “reproduction time” has elapsed (YES in step C7), the process proceeds to step C9 described above until the next still image video is checked and all the contents of the still image table TA are displayed and output. Repeat the operation.

 As described above, in this embodiment, the caption data superimposed on the video data received by the television broadcast receiver 13 is separated from the video data, and the video portion into which the caption data is inserted is used as the caption portion. The CPU 1 obtains and records subtitle data and video data from the subtitle portion each time it is sequentially specified, thereby enabling digest recording to sequentially record the video with the subtitle portion together with the subtitle. Even if recording is not sequentially recorded, it is possible to easily grasp the whole at the time of reproduction. In this case, it is possible to quickly and accurately identify the subtitle portion from the characters separated from the video, rather than identifying the important portion by analyzing the recorded content itself during playback. Thus, it is possible to continuously reproduce each subtitle portion without depending on the user operation.

In this case, the video data for each subtitle portion is a still image obtained from the moving image video of the subtitle portion, and the recorded contents can be made compact, and also read out from the still image table TA during playback and displayed. It is only necessary, and efficient reproduction is possible.
In addition, when generating a still image from a moving image of a subtitle, by generating a still image from a moving image by extracting the first I frame that appears after detection of the subtitle as a still image, Conversion to still image video can be performed efficiently. Also, the playback time for playing back and displaying still images with subtitles is the time determined based on the number of characters that make up this subtitle data, and the playback time can be increased in proportion to the number of characters. It will be a thing.

  In addition, when a TV program is normally recorded and the program content cannot be recorded to the end with the current memory remaining capacity, the recording method can be switched from “normal recording” to “digest recording”. The entire program overview can be recorded even when the remaining memory is low. In addition, regarding the moving image content MC having a long storage period among the various moving image contents MC, the storage capacity can be reduced by performing rewriting by making the still image digest (compact). In this case, among the video content MC having a long storage period, the video content MC of a specific genre can be targeted for downsizing, and the video content MC other than the specific genre is stored as it is even with the old video content MC. can do.

In addition, when recording a video by receiving a digital broadcast, “Normal”, “Still Image Digest”, and “Video Digest” are displayed as menus, and any recording format can be selected. Thus, recording according to the user's wishes can be performed.
In addition, when playing back a still image digest, video with subtitles is switched and displayed sequentially according to the “playback time”, but if a feed operation is performed at that time, the video is switched to the next video with subtitles. , It is possible to jump playback of subtitles unnecessary for the user.

 In the above-described embodiment, the reservation recording is not mentioned, but when the reservation date and time is reached, the same operation as in the case of recording by a user operation may be performed. Although no particular mention is made regarding audio, the recording may be cut when recording a still picture digest, or may be recorded for each subtitle portion when recording a moving picture digest.

 In the above-described embodiment, the “reproduction time” of the subtitle portion is determined from the number of characters constituting the subtitle, but the “reproduction time” of the portion is determined according to the time length of the subtitle portion. It may be determined. That is, the “reproduction time” may be determined in proportion to the insertion time of the same character string. Furthermore, the playback time for each subtitle portion may be set to a certain time.

 In the above-described embodiment, the case where the digital broadcast is received and the digest recording is illustrated, but the present invention is not limited to the recording of the digital broadcast, but also when the movie content supplied from the Internet or the external recording medium 3 is recorded. Similarly to the above, a subtitle portion may be specified from character data separated from video data, and “video data” and “subtitle data” of the portion may be associated with each other and stored in the still image table TA.

 In the above-described embodiment, when “1: normal” is selected from the recording menu screen, a confirmation message for reconfirming the recording method is displayed if full recording is not possible with the current remaining memory. Although displayed and output, it may be switched from normal recording to video digest recording. In this case, a guidance display may be made to switch from normal recording to video digest recording. In addition, when “3: video digest” is selected from the recording menu screen, the video digest recording may be switched to the still image digest recording if the current remaining memory capacity is equal to or less than a predetermined amount.

In the above-described embodiment, when still image digest recording is performed, one still image video is obtained from the moving image video of the subtitle portion. However, a plurality of still image videos may be obtained for each subtitle portion. Good. Further, in the above-described embodiment, when the moving image content MC is made compact, the still image digest is made. However, the moving image digest may be made.
In addition, the present invention is not limited to a mobile phone device with a video recording function, and can be similarly applied to a mobile terminal device such as a PDA, an electronic camera, and an electronic wristwatch with a video recording function. Not limited to this, a stationary video recording apparatus may be used.

The block diagram which showed the basic component of the mobile telephone apparatus with a television reception recording reproduction function applied as a video recording device. The block diagram which showed the structure of the television broadcast receiving part 13. FIG. The figure for demonstrating "still picture digest" as a video recording system. The figure for demonstrating "video digest" as a video recording system. The figure for demonstrating still picture table TA. The figure for demonstrating the character number table TB. The figure for demonstrating the moving image content MC. The figure for demonstrating the table TC classified by genre. The flowchart which showed the video recording application process started execution according to instruction | indication operation which instruct | indicates the recording of a television broadcast. The flowchart following FIG. The flowchart which showed the operation | movement in the case of downsizing the moving image content MC (still image digest). The flowchart which showed the content reproduction process.

Explanation of symbols

1 CPU
2 storage unit 3 external recording medium 9 display control unit 10 main display unit 12 key operation unit 13 TV broadcast reception unit 13A tuner 13B multiplexed signal separation unit 13C video signal decoder unit 13D audio signal decoder unit 13E character signal decoder unit 14 sound speaker TA Still image table TB Character number table TC Genre table MC Video content

Claims (8)

A video recording device for sequentially recording digital video data,
A specifying means for sequentially specifying a portion of video data of a moving image into which a subtitle is inserted based on subtitle data separated from the video data as a subtitle portion;
An acquisition means for acquiring subtitle data corresponding to the subtitle portion and video data of a still image each time a subtitle portion is sequentially specified by the specifying means ;
In addition to generating the video data of the still image from the video data of the moving image of the subtitle portion specified by the specifying means, the display time for reproducing and displaying the video data of the still image is determined according to the data amount of the subtitle data. A determination means ;
The subtitle data and the video data obtained for each subtitle portion by the acquisition unit are recorded in association with each other, and the display time determined by the determination unit is recorded in association with the video data of the still image for each subtitle portion. Recording means;
A remaining amount detecting means for detecting the remaining amount of memory for recording;
A recording method selection unit that selects a recording method based on predetermined information and executes a recording operation according to the selected recording method;
The recording means includes
A first recording method for sequentially recording video data of video and subtitle data thereof;
A second recording method for recording the video data and subtitle data in association with each subtitle portion from the video data of the moving image,
The recording method selection means includes
In accordance with the remaining amount of memory detected by the remaining amount detecting means, the second recording method is selected instead of the first recording method, and a recording operation corresponding to the method is executed.
A video recording apparatus characterized by that. A video recording device for sequentially recording digital video data,
A specifying means for sequentially specifying a portion of video data of a moving image into which a subtitle is inserted based on subtitle data separated from the video data as a subtitle portion;
An acquisition means for acquiring subtitle data corresponding to the subtitle portion and video data of a still image each time a subtitle portion is sequentially specified by the specifying means ;
In addition to generating the video data of the still image from the video data of the moving image of the subtitle portion specified by the specifying means, the display time for reproducing and displaying the video data of the still image is determined according to the data amount of the subtitle data. A determination means ;
The subtitle data and the video data obtained for each subtitle portion by the acquisition unit are recorded in association with each other, and the display time determined by the determination unit is recorded in association with the video data of the still image for each subtitle portion. Recording means;
A recording method selection unit that selects a recording method based on predetermined information and executes a recording operation according to the selected recording method;
The recording means includes
A first recording method for sequentially recording video data of video and subtitle data thereof;
A second recording method for recording the video data and subtitle data in association with each subtitle portion from the video data of the moving image,
The recording method selection means includes
Rewriting the recorded content by executing a recording operation according to the second recording method with respect to the recorded content recorded by the first recording method;
A video recording apparatus characterized by that. The identifying means sequentially identifies the caption portion while separating the video data and the caption data of the moving image from the received content when receiving the digital broadcast on which the caption data is superimposed and recording the moving image.
The video recording apparatus according to claim 1 or 2, characterized in that. A selection instruction receiving means for receiving a selection instruction;
When the selection instruction receiving means receives a first selection instruction,
The determining means generates still picture video data from the video data of the subtitle portion specified by the specifying means, and sets the display time for reproducing and displaying the generated still picture video data to the data amount of the caption data. Depending on the
The recording unit records the subtitle data obtained for each subtitle portion and the video data of the still image by the acquisition unit in association with each other, and determines the subtitle portion in association with the video data of the still image. Record the display time,
When the selection instruction receiving means receives a second selection instruction,
The acquisition means acquires video data of a moving image of the subtitle part,
The recording means records the subtitle data obtained for each subtitle portion by the acquisition means and video data of the moving image in association with each other;
The video recording apparatus according to claim 1 , wherein the video recording apparatus is a video recording apparatus. The recording method selection means includes
When rewriting the recording content recorded by the first recording method to the recording content according to the second recording method, the rewriting target is selected based on the video type;
The video recording apparatus according to claim 2 . The recording method selection means includes
When rewriting the recording content recorded by the first recording method to the recording content according to the second recording method, the rewriting target is selected based on the recording date and time.
The video recording apparatus according to claim 2 . On the computer,
A process of sequentially identifying video data portions of a moving image into which subtitles are inserted based on subtitle data separated from digital video data as subtitle portions;
Each time a subtitle portion is sequentially specified , processing for obtaining subtitle data corresponding to this subtitle portion and video data of a still image ,
In addition to generating video data of still images from the video data of the identified subtitle part video, processing for determining the display time when reproducing and displaying the video data of this still image according to the data amount of the subtitle data ,
A process of recording subtitle data and video data obtained for each subtitle portion in association with each other, and recording a display time determined in association with the video data of the still image for each subtitle portion;
Processing to detect the remaining memory for recording,
According to the detected remaining memory capacity, the video data and subtitle data for each subtitle portion from the video data of this video instead of the first recording method for sequentially recording the video data of the video and its subtitle data. A process of selecting a second recording method for recording in association with each other and executing a recording operation according to the method;
A program that executes On the computer,
A process of sequentially identifying video data portions of a moving image into which subtitles are inserted based on subtitle data separated from digital video data as subtitle portions;
Each time a subtitle portion is sequentially specified , processing for obtaining subtitle data corresponding to this subtitle portion and video data of a still image ,
In addition to generating video data of still images from the video data of the identified subtitle part video, processing for determining the display time when reproducing and displaying the video data of this still image according to the data amount of the subtitle data ,
A process of recording subtitle data and video data obtained for each subtitle portion in association with each other, and recording a display time determined in association with the video data of the still image for each subtitle portion;
Corresponding video data and subtitle data for each subtitle part of the video data of the video for the recorded contents recorded by the first recording method that sequentially records the video data of the video and its subtitle data A process of rewriting the recorded content by executing a recording operation according to the second recording method to be recorded,
A program that executes

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