JP4093996B2 - Video playback device - Google Patents

Description

  The present invention relates to a video reproduction apparatus.

  Digital TV broadcasting or data sampled from analog video into digital information is compressed using a moving image compression method such as MPEG, and then stored in a hard disk or other recording media so that it can be played back when the user wants to view it. A video recording / reproducing apparatus is known.

  As described above, in the video recording / reproducing apparatus, it is possible to select and reproduce a desired one from a plurality of video sources stored in the recording medium. In addition, this type of video recording / playback apparatus generally has a function of searching an arbitrary place in a specific video source, such as fast-forwarding and rewinding, while checking the video.

  By the way, recently, in a variety program or the like, it is often performed that the same scene is broadcast before and after the CM. This is intended to let viewers who have started watching the channel during or immediately after the CM know the progress of the program contents and watch the program more interestingly. For viewers who continue to watch the channel, they will see the same scene twice, giving them a waste of time and a boring impression.

When such a program is recorded on a video recording / playback apparatus and played back, in order to avoid viewing the same scene twice, the viewer must fast-forward the same scene for the second time. At this time, if fast-forwarding is performed to a scene that has never been seen, rewinding must be performed.
Conventionally, a method for accurately detecting a CM section (see Patent Document 1) and a method for simply skipping a commercial portion during reproduction (see Patent Documents 2 and 3) have already been developed.
JP 2003-47031 A JP 2003-309813 A JP 2003-319314 A

  In the video source to be played back, if there is a section of the same scene across a certain section within a section within a predetermined time, the same scene section is recorded at the time of playback. It is an object of the present invention to provide a video playback apparatus that can skip from the end position of the same scene section with earlier time to the end position of the same scene section with later recording time.

  In addition, the present invention provides that, in a video source to be reproduced, if there is a section of the same scene across a certain section within a section within a predetermined time, at the time of playback, of these same scene sections An object of the present invention is to provide a video playback apparatus that can skip from the start position of the same scene section with earlier recording time to the start position of the same scene section with later recording time.

  According to a first aspect of the present invention, in a video playback apparatus having a function of playing back a video source recorded on a recording medium, the video source is recorded within a predetermined time based on the video source recorded on the recording medium. In this section, it is determined whether or not there is a section of the same scene across a certain section. If there is, the end position of the same scene section with the earlier recording time among these same scene sections And the end position of the same scene section whose recording time is later registered as the pair data of the skip start position and the skip end position, respectively, and at the time of reproduction, the skip position specification processing means Skip processing means is provided for performing skip processing based on the pair data, and the skip processing means has a playback position skipped. When the pair position registration processing means has reached the skip start position of the pair data, the first means for displaying that the skip is possible and the fact that the skip is possible are displayed by the first means. In the meantime, when a skip command is input by the user, there is provided second means for skipping the reproduction position to the skip end position of the pair data and erasing the indication that the skip is possible. .

  According to a second aspect of the present invention, in a video playback apparatus having a function of playing back a video source recorded on a recording medium, the video source is recorded within a predetermined time based on the video source recorded on the recording medium. In this section, it is determined whether or not there is a section of the same scene across a certain section. If there is, the end position of the same scene section with the earlier recording time among these same scene sections And the end position of the same scene section whose recording time is later registered as the pair data of the skip start position and the skip end position, respectively, and at the time of reproduction, the skip position specification processing means Skip processing means is provided for performing skip processing based on the pair data, and the skip processing means has a playback position skipped. Upon reaching the skip start position of the pair data registered by the flop position specifying processing means it is characterized in that it comprises means for skipping a reproduction position to the skip end position of the pair data.

  According to a third aspect of the present invention, in a video reproduction apparatus having a function of reproducing a video source recorded on a recording medium, the video source is recorded within a predetermined time based on the video source recorded on the recording medium. In this section, it is determined whether or not there is a section of the same scene across a certain section. If there is, the start position of the same scene section with the earlier recording time among these same scene sections And the start position of the same scene section with the later recording time registered as the skip start position and the skip end position pair data, respectively, and at the time of playback, the skip position specification processing means Skip processing means is provided for performing skip processing based on the pair data, and the skip processing means has a playback position skipped. When the pair position registration processing means has reached the skip start position of the pair data, the first means for displaying that the skip is possible and the fact that the skip is possible are displayed by the first means. In the meantime, when a skip command is input by the user, there is provided second means for skipping the reproduction position to the skip end position of the pair data and erasing the indication that the skip is possible. .

  According to a fourth aspect of the present invention, in a video playback apparatus having a function of playing back a video source recorded on a recording medium, the video source is recorded within a predetermined time based on the video source recorded on the recording medium. In this section, it is determined whether or not there is a section of the same scene across a certain section. If there is, the start position of the same scene section with the earlier recording time among these same scene sections And the start position of the same scene section with the later recording time registered as the skip start position and the skip end position pair data, respectively, and at the time of playback, the skip position specification processing means Skip processing means is provided for performing skip processing based on the pair data, and the skip processing means has a playback position skipped. Upon reaching the skip start position of the pair data registered by the flop position specifying processing means it is characterized in that it comprises means for skipping a reproduction position to the skip end position of the pair data.

  According to the present invention, in the video source to be reproduced, if there is a section of the same scene across a certain section in a section within a predetermined time, at the time of playback, of these same scene sections It is possible to skip from the end position of the same scene section with earlier recording time to the end position of the same scene section with later recording time.

  Further, according to the present invention, in the video source to be played back, if there are sections of the same scene across a certain section within a section within a predetermined time, these same scene sections are reproduced at the time of playback. Of these, it is possible to skip from the start position of the same scene section with earlier recording time to the start position of the same scene section with later recording time.

  Embodiments of the present invention will be described below with reference to the drawings.

[1] Description of Electrical Configuration of Video Recording / Reproducing Device FIG. 1 shows an electrical configuration of the video recording / reproducing device.

  Reference numeral 1 denotes a tuner unit for receiving BS, CS, terrestrial digital broadcasting, and the like. Reference numeral 2 denotes a demodulation unit that demodulates a signal output from the tuner unit 1 and outputs compressed video / audio data such as an MPEG2 transport stream.

  3 extracts a digital stream corresponding to a channel designated by the control unit 10 from a digital stream (such as an MPEG2 transport stream) output from the demodulation unit 2 and separates video, audio, program information, and the like from the digital stream. It is a separation part.

  Reference numeral 4 denotes a compressed data storage unit for recording the compressed video data and the compressed audio data obtained by the separation unit 3 as files. The compressed data storage unit 4 includes, for example, a storage medium such as a hard disk drive, a nonvolatile memory, a writable CD, or a writable DVD, and a file system.

  Reference numeral 5 denotes an audio decoding unit that decodes and outputs an audio signal from the compressed audio data output from the separation unit 3 or the compressed audio data read from the compressed data storage unit 4. Reference numeral 6 denotes a video decoding unit that decodes and outputs a video signal from the compressed video data output from the separation unit 3 or the compressed video data read from the compressed data storage unit 4.

  Reference numeral 7 denotes an OSD multiplex processing unit for synthesizing OSD data for on-screen display of a program guide screen and various setting screens with a video signal output from the video decoding unit 6. Reference numeral 8 denotes an operation unit. Reference numeral 10 denotes a control unit for controlling each unit of the video recording / reproducing apparatus.

[2] Description of operation during viewing of broadcast program When viewing of the broadcast program is instructed by the operation unit 8, the control unit 10 adjusts the tuner unit 1 and the demodulation unit according to the channel selected by the operation unit 8. 2 and separation unit 3 are controlled to perform a channel selection operation. Thereby, the digital data output from the demodulator 2 is separated into video data and audio data by the separator 3. The video data is decoded by the video decoding unit 6 and then output via the OSD multiplex processing unit 4. The audio data is output after being decoded by the audio decoding unit 5.

[3] Description of Operation During Recording of Broadcast Program When the operation unit 8 instructs the recording of the broadcast program, the control unit 10 adjusts the tuner unit 1 and the demodulation unit according to the channel selected by the operation unit 8. 2 and the separation unit 3 are controlled to perform a channel selection operation, and the compressed video data and the compressed audio data obtained by the separation unit 3 are sent to the compressed data storage unit 4. The compressed data storage unit 4 sequentially records the input digital data.

[4] Description of operation during reproduction of recorded data When reproduction of recorded data is instructed by the operation unit 8, the control unit 10 reads out the recorded data designated by the operation unit 8 from the compressed data storage unit 4. . The obtained compressed video data is sent to the video decoding unit 6, and the obtained compressed audio data is sent to the audio decoding unit 5.

[5] Explanation of CM Skip In this embodiment, when a program in which the same scene is broadcast before and after the CM is played, the end of the same scene before the CM is changed to the same scene after the CM. It has a function to skip to the end position.

  For example, as shown in FIG. 2, in the program to be recorded, if the same scene section (AB and CD) exists before and after the CM section (BC), the same scene before the CM When playback is performed up to the end position B, the OSD display “CM can be skipped” is displayed. When the viewer desires CM skip, the viewer operates a CM skip button provided on the operation unit 8 and inputs a CM skip command. When a CM skip command is input, the program skips to the end position D of the same scene after the CM. That is, the playback position is moved to the end position of the same scene after the CM.

  In order to perform such a CM skip, in this embodiment, a skip position specifying process is performed at the time when the recording of the broadcast program ends.

  FIG. 3 shows a procedure for specifying the skip position.

  First, the first frame of the file is set to the comparison source frame number (FR_ORG) (step S1). Next, the frame number 30 seconds after the possibility that the CM has already ended with respect to the comparison source frame number (FR_ORG) is set as the comparison target frame number (FR) (step S2).

  It is determined whether or not the comparison target frame (FR-th frame) is after the end of the file (step S3). If the comparison target frame is after the end of the file, the skip position specifying process for this file is terminated.

  If it is determined in step S3 that the comparison target frame is not after the end of the file, whether the comparison source frame (FR_ORGth frame) and the comparison target frame (FRth frame) are the same scene or not. Is discriminated (step S4).

  If the comparison source frame and the comparison target frame are not the same scene, the comparison target frame number (FR) is incremented by 1 (step S5). That is, the comparison target frame is advanced by one frame. Then, it is determined whether or not the difference between the comparison target frame number (FR) and the comparison source frame number (FR_ORG) corresponds to 3 minutes or more (step S6).

  If the difference between the comparison target frame number (FR) and the comparison source frame number (FR_ORG) does not correspond to 3 minutes or more, the process returns to step S3. When the difference between the comparison target frame number (FR) and the comparison source frame number (FR_ORG) corresponds to 3 minutes or more, the comparison source frame number (FR_ORG) is incremented by 1 (step S7). That is, the comparison source frame is advanced by one frame. Then, the process returns to step S2.

  If it is determined in step S4 that the comparison source frame and the comparison target frame are the same scene, 1 is set to the variable D (step S8). Then, it is determined whether or not the (FR + D) -th frame (D-th frame from the comparison target frame) is after the end of the file (step S9). If the (FR + D) th frame is after the end of the file, the skip position specifying process for this file is terminated.

  If it is determined in step S9 that it is not after the end of the (FR + D) th frame file, the (FR_ORG + D) th frame (Dth frame from the comparison source frame) and the (FR + D) th frame (comparison) It is determined whether or not the D-th frame from the target frame is the same scene (step S10). If the (FR_ORG + D) th frame and the (FR + D) th frame are the same scene, the variable D is incremented by 1 (step S11), and the process returns to step S9.

  If it is determined in step S10 that the (FR_ORG + D) th frame and the (FR + D) th frame are not the same scene, it is determined whether or not the variable D corresponds to 15 seconds or more (step S12). ). If it is determined that the variable D corresponds to 15 seconds or more, that is, if it is determined that the same scene section is 15 seconds or more, the position of the (FR_ORG + D) th frame (the end of the same scene on the front side) (Position) and the position of the (FR + D) th frame (the end position of the same scene on the rear side) are registered as a skip start position and a skip end position (step S13). Then, after updating the comparison source frame number (FR_ORG) to (FR_ORG + D) (step S14), the process returns to step S2.

  If it is determined in step S12 that the variable D does not correspond to 15 seconds or longer, the process proceeds to step S14 without performing the process in step S13.

  In the example of FIG. 2, when the comparison source frame is set to the position C after the comparison source frame is set to the frame at the position A, it is determined in step S4 that both frames are the same scene. . If the variable D is within a value corresponding to the distance in the section AB, it is determined in step S10 that the (FR_ORG + D) th frame and the (FR + D) th frame are the same scene. . If the variable D exceeds a value corresponding to the distance in the section AB, it is determined in step S10 that the (FR_ORG + D) th frame and the (FR + D) th frame are not the same scene, and the position B (exactly, A position slightly beyond position B) and a position D (more precisely, a position slightly beyond position D) are registered as a skip start position and a skip end position.

  FIG. 4 shows time-pair data including a skip start position and a skip end position registered by a skip position specifying process for a certain file. In this example, three sets of time pair data are registered in the order of early time. Each pair of time pair data is assigned a time pair number starting from 1 with the earliest time.

  FIG. 5 shows a processing procedure during reproduction.

  First, a variable N representing time pair No is set to 1 (step S21). Also, SKIP_FLAG is reset (SKIP_FLAG = 0) (step S22). Then, the playback position is set to the file head position (step S23).

  Next, it is determined whether or not the Nth time pair data (time pair data whose time pair No is N) exists (step S24). If the Nth time pair data exists, it is determined whether or not the skip start position in the Nth time pair data is the same as the reproduction position (step S25). If the skip start position in the Nth time pair data is different from the playback position, it is determined whether or not the skip end position in the Nth time pair data is the same as the playback position (step S26).

  If the skip end position in the Nth time pair data is different from the playback position, it is determined whether or not SKIP_FLAG is set (step S27). If SKIP_FLAG is not set (SKIP_FLAG = 0), the process proceeds to step S35, where the video is played for 1 second, and the playback position is advanced by 1 second. Then, it is determined whether or not the playback position has reached the end of the file (step S36). If the playback position has not reached the end of the file, the process returns to step S24. If the playback position has reached the end of the file, playback ends.

  If it is determined in step S25 that the skip start position in the Nth time pair data is the same as the playback position, after SKIP_FLAG is set (SKIP_FLAG = 1) (step S28), “CM skip is possible. Is displayed on the screen (step S29). Then, it is determined whether or not the CM skip button has been pressed while the message “CM skip is possible” is displayed (step S30). If the CM skip button has not been pressed, the process proceeds to step S35. If the CM skip button is pressed, the process proceeds to step S31.

  In step 31, the playback position is advanced to the skip end position in the Nth time pair data. Further, the display of the message “CM skip is possible” is deleted and SKIP_FLAG is reset (SKIP_FLAG = 0). Then, the process proceeds to step S35.

  In step S27, if SKIP_FLAG is set (SKIP_FLAG = 1), the process proceeds to step S29.

  If it is determined in step S26 that the skip end position in the Nth time pair data is the same as the playback position, the message “CM skip is possible” is deleted (step S32). Further, SKIP_FLAG is reset (SKIP_FLAG = 0) (step S33). Further, after the variable N is incremented by 1 (step S34), the process proceeds to step S35.

  If the Nth time pair data does not exist in step S24, the process proceeds to step S35.

  In the above embodiment, in the skip position specifying process, the end position of the same scene before CM (B in FIG. 2) and the end position of the same scene after CM (D in FIG. 2) are detected and registered. However, the start position of the same scene before CM (A in FIG. 2) and the start position of the same scene after CM (C in FIG. 2) may be detected and registered. That is, in step S13 of FIG. 3, the position of the FR_ORGth frame (the start position of the same scene on the front side) and the position of the FRth frame (the start position of the same scene on the back side) are Registered as the skip end position.

  In this case, during playback, when the playback position reaches the start position (A in FIG. 2) of the same scene before CM, a message “CM skip is possible” is displayed. When the CM skip button is pressed, the playback position is advanced to the start position (C in FIG. 2) of the same scene after the CM.

  Further, in the above embodiment, the CM skip is performed only when the CM skip button is pressed. However, when the CM skip mode is prepared and the user sets the CM skip mode before the reproduction is started. When the playback position reaches the skip start position, the playback position may be automatically advanced (skip) to the skip end position.

It is a block diagram which shows the electric constitution of a video recording / reproducing apparatus. It is the schematic diagram explaining CM skip of a present Example. It is a flowchart which shows the specific process sequence of a skip position. It is a schematic diagram which shows the time pair data which consist of the skip start position and skip end position which were registered by the skip position specific process about a certain file. It is a flowchart which shows the process sequence at the time of reproduction | regeneration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tuner part 2 Demodulation part 3 Separation part 4 Compressed data storage part 5 Audio decoding part 6 Video decoding part 7 OSD multiple processing part 8 Operation part 10 Control part

Claims (4)

In a video playback device having a function of playing back a video source recorded on a recording medium,
Based on the video source recorded on the recording medium, it is determined whether or not there is a section of the same scene across a certain section within the predetermined time within the video source. In the same scene section, the end position of the same scene section with the earlier recording time and the end position of the same scene section with the later recording time are registered as pair data of the skip start position and the skip end position, respectively. Skip position specifying processing means to be performed, and skip processing means for performing skip processing based on the pair data registered by the skip position specifying processing means at the time of reproduction,
The skip processing means can be skipped by the first means and the first means for displaying that the skip is possible when the reproduction position reaches the skip start position of the pair data registered by the skip position specifying processing means. When a skip command is input by the user while the message is displayed, the second means for skipping the reproduction position to the skip end position of the pair data and erasing the display indicating that the skip is possible is provided. A video playback device comprising: In a video playback device having a function of playing back a video source recorded on a recording medium,
Based on the video source recorded on the recording medium, it is determined whether or not there is a section of the same scene across a certain section within the predetermined time within the video source. In the same scene section, the end position of the same scene section with the earlier recording time and the end position of the same scene section with the later recording time are registered as pair data of the skip start position and the skip end position, respectively. Skip position specifying processing means to be performed, and skip processing means for performing skip processing based on the pair data registered by the skip position specifying processing means at the time of reproduction,
The skip processing means includes means for skipping the playback position to the skip end position of the pair data when the playback position reaches the skip start position of the pair data registered by the skip position specifying processing means. A video playback device. In a video playback device having a function of playing back a video source recorded on a recording medium,
Based on the video source recorded on the recording medium, it is determined whether or not there is a section of the same scene across a certain section within the predetermined time within the video source. In the same scene section, the start position of the same scene section with the earlier recording time and the start position of the same scene section with the later recording time are registered as pair data of the skip start position and the skip end position, respectively. Skip position specifying processing means to be performed, and skip processing means for performing skip processing based on the pair data registered by the skip position specifying processing means at the time of reproduction,
The skip processing means can be skipped by the first means and the first means for displaying that the skip is possible when the reproduction position reaches the skip start position of the pair data registered by the skip position specifying processing means. When a skip command is input by the user while the message is displayed, the second means for skipping the reproduction position to the skip end position of the pair data and erasing the display indicating that the skip is possible is provided. A video playback device comprising: In a video playback device having a function of playing back a video source recorded on a recording medium,
Based on the video source recorded on the recording medium, it is determined whether or not there is a section of the same scene across a certain section within the predetermined time within the video source. In the same scene section, the start position of the same scene section with the earlier recording time and the start position of the same scene section with the later recording time are registered as pair data of the skip start position and the skip end position, respectively. Skip position specifying processing means to be performed, and skip processing means for performing skip processing based on the pair data registered by the skip position specifying processing means at the time of reproduction,
The skip processing means includes means for skipping the playback position to the skip end position of the pair data when the playback position reaches the skip start position of the pair data registered by the skip position specifying processing means. A video playback device.

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