JP2011004197A - Recording and reproducing apparatus and reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve viewing and listening to a music section in content while omitting an overlapped music section therein.SOLUTION: A theme song detector 14 consists of a music section detector 101, a provider scene detector 102, a shot detector 103, a telop detector 104, a closed caption detector 105, a language analyzer 106, and a detected information manager 107. The music section detector 101 detects an original story music section from an audio signal. The provider scene detector 102 detects a scene representing a provider from a video before and behind of the original story music section. The shot detector 103 detects a section whose average recording period of time of a shot interval in the original story music section is within a predetermined period of time. The language analyzer 106 detects the section in which a predetermined keyword exists by using the telop and closed caption of the original story music section detected by the telop detector 104 and the closed caption detector 105. The detected information manager 107 decides a theme song section for which reproduction is omitted on the basis of the detected result.

Description

  The present invention relates to a recording / playback apparatus and a method for playing back content stored in the recording / playback apparatus.

Since the capacity of the recording device mounted on the recording / playback device has increased, it has become possible to record a large number of contents. From this large number of contents, a part that the user desires to view is extracted and the contents are viewed efficiently.

For example, according to the technology disclosed in Patent Document 1, it is determined whether or not there is data common to a certain section in the content of a series of multiple stories, and as a result, for a certain section that is common, skip. Thereby, a common section in the same series can be omitted, and only the main content can be played back, and the viewing time can be shortened.

JP 2008-103585 A

Since the above-described technology determines a skipped section by comparing a plurality of contents, the viewing time cannot be shortened unless a plurality of episodes of the same series are recorded. Further, in the above-described technique, the data of the configuration is compared between the plurality of stories along the time. In other words, if the content is not recorded at the same time, it cannot be detected as a common scene. However, in the case of a series of multi-story content, the content configuration may be different at the first time and the last time, and there is a problem that it is not detected as a common scene. Therefore, it is desirable to detect a common scene even when the content configuration is different and to view the scene without the scene.

The present invention has been made in view of the above-described points, and an object thereof is to view a music section in content while omitting overlapping music sections.

In order to achieve the above object, a recording / reproducing apparatus according to the present invention includes a content receiving unit that receives content, a storage device that stores the content received by the content receiving unit,
In the main part of the content, a decoder unit that separates at least a video signal, an audio signal, and a caption signal among the signals constituting the content received by the content receiving unit and the audio signal separated by the decoder unit A first detection unit for detecting a section including music;
A second detection unit that detects characters existing in a section that overlaps with the serialized content from a character string configured by a caption signal that exists in the section detected by the first detection unit;
A detection information management unit that stores a detection result detected by the second detection unit, determines a section in which reproduction is omitted using the stored detection result, and a detection information management unit when reproducing the content And a reproduction control unit that reproduces data while omitting the section determined in (1).

Also, the playback method according to the present invention receives content, separates at least a video signal, an audio signal, and a caption signal from signals constituting the content, and includes music in the main content by using the audio signal. Detected from the character string composed of the caption signal existing in the detected section, the section where the character indicating the section overlapping the serialized content exists, and detection using the caption signal A section in which reproduction is omitted is determined based on the result, and the determined section is reproduced from the content by omitting it.

  It is possible to perform viewing by omitting overlapping music sections from the music sections in the content.

The functional block diagram of the recording / reproducing apparatus in this Embodiment. The functional block diagram of the theme song detection part in this Embodiment. The flowchart showing the detection procedure by the provider scene in this Embodiment. The flowchart showing the detection procedure by the shot space | interval in this Embodiment. The flowchart showing the detection procedure by the telop in this Embodiment. The flowchart showing the detection procedure by the caption in this Embodiment. The flowchart showing the detection procedure by the non-caption section in this Embodiment. The flowchart showing the procedure which determines the theme song area output by the detection information management part in this Embodiment. The flowchart showing the modification of the procedure which determines the theme song area output by the detection information management part in this Embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The recording / reproducing apparatus 1 is an apparatus that records and reproduces content received from a broadcasting station, a server on the Internet, or the like. For example, a television receiver or a personal computer. First, FIG.
The function of the recording / playback apparatus 1 will be described with reference to FIG. FIG. 1 is a functional block diagram of a recording / playback apparatus 1 according to the present embodiment.

The recording / playback apparatus 1 includes a content reception unit 10, a recording / playback unit 11, a recording device 12, a decoder unit 13, a theme song detection unit 14, a CM detection unit 15, a reception unit 16, and a playback control unit 1.
7 and an I / F (Interface) unit 18.

The content receiving unit 10 demodulates a content signal received via an external antenna, and transmits signals such as video and audio and captions to the recording / reproducing unit 11 and the decoder unit 13. Content includes those broadcast from broadcast stations and those distributed over the Internet.

The recording / reproducing unit 11 receives various signals from the content receiving unit 10 and outputs them to the recording device 1.
2. Convert to the format recorded in 2. In addition, the recording / reproducing unit 11 adds metadata specifying the theme song section input from the theme song detection unit 14 to various signals and records them in the recording device 12. The metadata specifying the theme song section includes time information of the theme song section, an algorithm used for detecting the theme song section, and various keywords and videos corresponding to various signals when the algorithm is used. Further, when receiving an operation signal representing a reproduction operation from the reproduction control unit 17, the recording / reproducing unit 11 reads various signals and added metadata from the recording device 12 and converts them into a format handled by the reproduction control unit 17. To the playback control unit 17.

The recording device 12 records various signals constituting the content such as video / audio and subtitles converted by the recording / reproducing unit 11. Moreover, the recording device 12 records the metadata specifying the theme song section determined by the theme song detection unit 14 together with various signals. The recording device 12 is, for example, a hard disk, a semiconductor memory, an optical disk, a magnetic disk, or the like.

The decoder unit 13 separates various signals constituting the content received from the content receiving unit 10 into a video signal, an audio signal, and a caption signal. Then, the decoder unit 13 converts the separated video signal, audio signal, and subtitle signal into a format that can be processed by the theme song detection unit 14 and transmits the converted signal to the theme song detection unit 14. The decoder unit 13 converts the separated audio signal into a format that can be processed by the CM detection unit 15 and transmits the converted signal to the CM detection unit 15. The decoder unit 13
When various signals are transmitted to the theme song detector 14 and the CM detector 15, time information is added so that the separated signals can be synchronized with each other.

The theme song detection unit 14 uses the various signals received from the decoder unit 13 to detect a theme song section according to a detection method executed by each functional block described later. The theme song detection unit 14
Based on the metadata specifying the detected theme song section, the theme song section to be output is determined, and the determined theme song section is transmitted to the recording / reproducing unit 11. The function of the theme song detection unit 14 will be described later with reference to FIG.

The CM detection unit 15 uses the audio signal received from the decoder unit 13 to perform the main music section and C
M section is detected. The CM detection unit 15 obtains the time information of the detected CM section as the theme song detection unit 1
4 to send. As a method for detecting the CM section, the method disclosed in Japanese Patent Laid-Open No. 3-184443 can be used, and detailed description thereof will be omitted.

The receiving unit 16 is a remote controller (not shown) for operating the recording / reproducing apparatus 1.
The operation control signal is received from the control unit 17 and converted into a format that can be processed by the reproduction control unit 17.
Send to. The operation signal is, for example, a signal for instructing content reproduction or various special reproductions.

The reproduction control unit 17 executes processing represented by the operation signal received from the receiving unit 16. For example,
When the received operation signal indicates content playback, the recording / playback unit 11 is instructed to read the content from the recording device 12. If you are instructed to play a special song that skips the theme song,
The metadata specifying the theme song section stored together with the content is read together, and reproduction is performed to skip the specified theme song section.

The I / F unit 18 is an interface that mediates transmission of various signals between the reproduction control unit 17 and the output device 19. The content reproduced by the reproduction control unit 17 is converted into a format output by the output device 19 and transmitted to the output device 19.

The output device 19 is an external device for displaying various signals transmitted from the I / F unit 18. Examples of the output device 19 include a display and a speaker.

Next, the function of the theme song detection part 14 is demonstrated using FIG. FIG. 2 is a functional block diagram of the theme song detection unit 14 in the present embodiment.

The theme song detection unit 14 includes a music section detection unit 101, a provider scene detection unit 102, a shot detection unit 103, a telop detection unit 104, a caption detection unit 105, a language analysis unit 106, and a detection information management unit. 107 and a memory unit 107a.

The music section detection unit 101 receives an audio signal from the decoder unit 13 and CM section information from the CM detection unit 15. First, the music section detection unit 101 detects the main content that excludes the received CM section from the content. Next, the music section detection unit 101 detects a section in which music is inserted from the main content section. If a section in which music is inserted is called a main part music section, the recording time of the main part music section is shorter than the main part of the content. Here, it can be said that the main content section is a large section and the main music section is a small section.

Next, the music section detecting unit 101 transmits the detected small section to the providing scene detecting unit 102, the shot detecting unit 103, the telop detecting unit 104, and the caption detecting unit 105. That is, the section handled by the source scene detection unit 102, the shot detection unit 103, the telop detection unit 104, and the caption detection unit 105 is the main music section detected by the music section detection unit 101. As a method for detecting a music section, for example, the method disclosed in Japanese Patent Application Laid-Open No. 2008-310338 can be used, and detailed description thereof will be omitted. However, the method of music section detection is not limited to this.

The source scene detection unit 102 receives the video signal and audio signal existing in the main music segment received from the music segment detection unit 101 from the decoder unit 13, and performs pattern matching with the image or audio of the source scene registered in advance. Do. The provider scene is inserted before and after the theme song section of content in drama or animation, and displays a provider's logo or the like. It is determined whether or not the main music section detected by detecting the providing source scene is a theme song section from among certain sections before and after the main music section received from the music section detection unit 101. When the scene representing the provider is detected, the provider scene detector 102 detects that the theme song section has been detected by the provider scene detector 102, the detected provider scene, and the main music section detected as the theme song section. The time information is transmitted to the detection information management unit 107. The procedure for detecting the theme song section by the provider scene will be described later with reference to FIG.

The shot detection unit 103 receives a video signal existing in the main music segment received from the music segment detection unit 101 from the decoder unit 13 and detects a cut point that divides a continuous video constituted by the video signal into shot units. . Here, a shot is an image taken continuously without a break. As the shot detection means, for example, it is possible to use a technique of calculating the similarity between the image frame input for each image and the image frame input immediately before and detecting the point at which the image content is switched. However, the shot detection method is not limited to this. In the opening scene and the ending scene (hereinafter referred to as OP / ED), the shot interval is often smaller than the main content. That is, the OP / ED plays a role of representing the outline of the content up to the previous time or the next notice, and is often configured to collect symbolic scenes. Therefore, the detected shot intervals can be compared among a plurality of main music sections, and the section with the shortest average shot interval can be detected as the theme song section. When the shot detection unit 103 detects the shot interval, the shot detection unit 103 transmits the detection of the shot interval and the time information of the main music section detected as the theme song section to the detection information management unit 107.

The telop detection unit 104 receives the video signal existing in the main music segment received from the music segment detection unit 101 from the decoder unit 13 and extracts the telop from the video composed of the video signal. The telop detection unit 104 converts the extracted telop into a character string and transmits the character string to the language analysis unit 106. Here, a telop is a character string embedded in an image, and is also called an open caption. That is, the telop is distinguished from the closed caption composed of the caption signal transmitted separately from the video signal. As a technique for detecting a telop, for example, the technique of No. 3692018 can be used, and a detailed description thereof will be omitted. However, the telop detection method is not limited to this.

The caption detection unit 105 receives a caption signal (also referred to as closed caption) present in the main music segment received from the music segment detection unit 101 from the decoder unit 13, converts the caption signal into a character string, and sends it to the language analysis unit 106. Send. When the caption signal includes graphic information, the caption detection unit 105 analyzes the meaning of the graphic and converts it into a character string.

The language analysis unit 106 processes the character strings received from the telop detection unit 104 and the caption detection unit 105, and whether or not keywords representing the theme song, music, and provider registered in advance are included in the character strings. Is determined. By the telop acquired from the telop detection unit 104,
FIG. 5 shows a technique for detecting a keyword included in OP / ED and a keyword representing a provider.
Will be described later. Keywords included in OP / ED include, for example, “content title”, “staff”, “production”, “cast”, “music”, “opening theme”, “
Ending theme ". The keyword representing the provider is, for example, “provide”
, “Sponsored by” and the like.

A method for detecting a keyword representing a theme song and music from subtitles acquired from the subtitle detection unit 105 will be described later with reference to FIG. The keyword representing the theme song is, for example, “theme music”, “theme”, “opening”, “ending”, and the like. In addition, keywords representing music include “♪ ˜” and “music”.

When a specific keyword is detected, the language analysis unit 106 indicates information indicating whether the theme song segment is detected using telop or subtitle, the detected keyword, and time information of the main music segment detected as the theme song segment Is transmitted to the detection information management unit 107. On the other hand, when a specific keyword is not included, the detection information management unit 107 detects that a section without subtitles (referred to as a non-subtitle section) is detected as a theme song section, and time information of a main music section detected as a theme song section. Send. A method of detecting the theme song section by the non-caption section will be described later with reference to FIG.

The detection information management unit 107 stores, in the memory unit 107 a, metadata that identifies the theme song section received from the source scene detection unit 102, the shot detection unit 103, and the language analysis unit 106. The detection information management unit 107 reads the metadata from the memory unit 107 a and outputs the theme song section to the recording / playback unit 11. For the determination of the theme song section, FIG. 8 and FIG.
Will be described later.

Next, a procedure for detecting a theme song section by the provider scene detection unit 102 using an image or sound of the provider scene will be described with reference to FIG. FIG. 3 is a flowchart showing a detection procedure by a source scene in the present embodiment.

First, it is determined whether or not there is a music section that has not been subjected to the processing from step S101 onward among the main music sections detected in advance by the music section detection unit 101 (step S10).
0). As a result, when it is determined that there is no main part music section for which the processing after step S101 is not performed (No in step S100), this procedure is ended. On the other hand, step S101
When it is determined that there is a main music section that has not been processed thereafter (Y in step S100)
es) Next, one of the main music sections in which the processes in and after step S101 are not performed is acquired (step S101).

Next, it is determined whether or not the length of the acquired main music section is within a predetermined time (
Step S102). Usually, since the theme song section is several minutes, a candidate for the theme song section is selected from the main music section by setting a threshold for the time.

As a result, when it is determined that the acquired main music section is not within the predetermined time (No in step S102), the process returns to step S100 described above. On the other hand, when it is determined that the acquired main music section is within the predetermined time (Yes in step S102), acquisition of one shot before and after the acquired main music section is executed (step S103). Since scenes representing the provider's logo and the like are often inserted before and after the theme song section, the source scene is detected by acquiring the previous and subsequent shots.

Next, the shot that has been acquired is matched with an image and sound representing the provider that has been registered in advance, and it is determined whether or not the source scene is present in the shot that has been acquired (step S104). .

As a result, when it is determined that there is no image representing the provider in the section where the shot is acquired (No in step S104), the process returns to step S100 described above. On the other hand, when it is determined that an image representing the provider exists in the section where the shot is acquired (Yes in step S104), the section acquired in step S101 is detected as the theme song section (step S1).
05). That is, when the source scene detection unit 102 detects the theme song section, the information indicating that the theme song section is detected using the image or sound of the source scene, the detected image or sound of the source scene The time information of the main music section detected as the theme song section is detected information management unit 1
Send to 07. And it returns to above-mentioned step S100. That is, the above procedure is repeated until the processing is performed for all main music sections.

Next, the detection of the theme song section by the shot detection unit 103 using the calculation result of the shot interval will be described with reference to FIG. FIG. 4 is a flowchart showing a detection procedure based on shot intervals in the present embodiment.

First, in the main music section detected by the music section detecting unit 101 in advance, step S1.
It is determined whether or not there is a music section for which the process after 11 has not been performed (step S110).
. As a result, when it is determined that there is no main music section for which the processing from step S111 is not performed (No in step S110), the process proceeds to step S114 described later. On the other hand, when it is determined that there is a main music section that has not been processed after step S111 (step S1).
Next, one of the main part music sections for which the process after step S111 is not performed is acquired (step S111).

Next, it is determined whether or not the length of the acquired main music section is within a predetermined time (
Step S112). As a result, when it is determined that the acquired main music section is not within the predetermined time (No in step S112), the process returns to step S110 described above. On the other hand, when it is determined that the acquired main music section is within a predetermined time (Y in step S112)
es), the average shot interval of the acquired main music section is calculated (step S113).

Then, the process returns to step S110. In other words, the above procedure is repeated until the shot intervals for all the main music sections are calculated.

Next, when calculation of shot intervals for all main music sections is completed (No in step S110), a section in which the average shot interval is within a predetermined time is detected as a theme song section (step S114). That is, when detecting the theme song section, the shot detection unit 103 detects information indicating that the theme song section is detected using the detection result of the shot interval, and detects time information of the main music section detected as the theme song section. The information is transmitted to the information management unit 107. In the present embodiment, the theme song section is detected by calculating the shot interval, but it may be detected by the number of shots. That is, when the number of shots is greater than a predetermined number in a certain section, it may be detected as a theme song section. The predetermined time and the predetermined number of times are set from the average value of the shot interval and the number of shots of the conventional OP / ED.

Next, the detection of the theme song section by the language analysis unit 106 using a telop will be described with reference to FIG. FIG. 5 is a flowchart showing a detection procedure using a telop in this embodiment.

First, in the main music section detected by the music section detecting unit 101 in advance, step S1.
It is determined whether or not there is a music section for which the processing after 21 has not been performed (step S120).
. As a result, when it is determined that there is no main part music section for which the processing after step S121 is not performed (No in step S120), this procedure is ended. On the other hand, when it is determined that there is a main music section for which the processing from step S121 onward is not performed (Yes in step S120)
) Next, one of the main music sections that have not been processed in step S121 and thereafter is acquired (
Step S121).

Next, it is determined whether or not the length of the acquired main music section is within a predetermined time (
Step S122). As a result, when it is determined that the acquired main music section is not within the predetermined time (No in step S122), the process returns to step S120 described above. On the other hand, if it is determined that the acquired main music section is within a predetermined time (Y in step S122)
es), the telop corresponding to the acquired main music section is acquired (step S123).
).

Next, it is determined whether or not a keyword representing the OP / ED and the provider exists in the section in which the telop is acquired (step S124). As a result, when it is determined that there is no keyword in the section in which the telop acquisition is executed (No in step S124), the process returns to step S120 described above. On the other hand, when it is determined that the keyword exists in the section in which the telop acquisition is executed (Yes in step S124), the section is detected as the theme song section (step S125). That is, when detecting the theme song section, the language analysis unit 106 uses information indicating that the theme song section has been detected using the telop, the detected keyword, and the time information of the main music section detected as the theme song section. It transmits to the detection information management part 107. And it returns to above-mentioned step S120. That is, the above procedure is repeated until the processing is performed for all main music sections.

Next, the detection of the theme song section by the language analysis unit 106 using subtitles will be described with reference to FIG. FIG. 6 is a flowchart showing a detection procedure using captions in the present embodiment.

First, in the main music section detected by the music section detecting unit 101 in advance, step S1.
It is determined whether or not there is a music section that has not been processed after step 31 (step S130).
. As a result, when it is determined that there is no main part music section for which the processing from step S131 is not performed (No in step S130), this procedure is ended. On the other hand, when it is determined that there is a main music section that has not been processed after step S131 (Yes in step S130).
) Next, one of the main music sections that have not been processed in step S131 and thereafter is acquired (
Step S131).

Next, it is determined whether or not the length of the acquired main music section is within a predetermined time (
Step S132). As a result, when it is determined that the acquired main music section is not within the predetermined time (No in step S132), the process returns to step S130 described above. On the other hand, if it is determined that the acquired main music section is within a predetermined time (Y in step S132)
es) Next, acquisition of subtitles corresponding to the acquired main music section is executed (step S13).
3).

Next, it is determined whether or not a keyword representing a theme song and music exists in the acquired subtitle (
Step S134). As a result, when it is determined that there is no keyword in the acquired subtitle (No in step S134), the process returns to step S130 described above. On the other hand, when it is determined that a keyword is present in the acquired subtitle (Yes in step S134), the section is detected as a theme song section (step S135). That is, when the language analysis unit 106 detects the theme song section, information indicating that the theme song section has been detected using subtitles, the detected keyword, and time information of the main music section detected as the theme song section. It transmits to the detection information management part 107. The process returns to step S130 described above. That is, the above procedure is repeated until the processing is performed for all main music sections.

Next, the detection of the theme song section by the non-subtitle section will be described with reference to FIG. FIG. 7 is a flowchart showing a detection procedure based on a non-caption section in the present embodiment.

First, in the main music section detected by the music section detecting unit 101 in advance, step S1.
It is determined whether or not there is a music section for which the processing after 41 is not performed (step S140).
. As a result, when it is determined that there is no main part music section for which the processing after step S141 is not performed (No in step S140), this procedure is ended. On the other hand, when it is determined that there is a main part music section for which the process after step S141 is not performed (Yes in step S140)
) Next, one of the main music sections for which the processing from step S141 onward is not performed is acquired (
Step S141).

Next, it is determined whether or not the length of the acquired main music section is within a predetermined time (
Step S142). As a result, when it is determined that the acquired main music section is not within the predetermined time (No in step S142), the process returns to step S140 described above. On the other hand, if it is determined that the acquired main music section is within a predetermined time (Y in step S142)
es), acquisition of subtitles corresponding to the acquired main music section is executed (step S143).

Next, it is determined whether or not there is a caption in the section in which caption acquisition is executed (step S1).
44). As a result, when it is determined that there is a caption in the section in which caption acquisition is performed (Yes in step S144), the process returns to step S140 described above. On the other hand, when it is determined that there is no caption in the section in which caption acquisition is executed (No in step S144), the section is detected as a theme song section (step S145). That is, when detecting the theme song section, the language analysis unit 106 detects information indicating that the theme song section has been detected using the non-captioned section, and time information of the main music section detected as the theme song section. To the unit 107. And it returns to above-mentioned step S140. That is, the above procedure is repeated until the processing is performed for all main music sections.

Next, a procedure for determining the theme song section to be output to the recording / playback unit 11 using the metadata that identifies the theme song section stored in the memory unit 107a by the detection information management unit 107 will be described. It is assumed that which metadata is used to determine the theme song section to be output is set in advance or can be set by the user. FIG. 8 shows the detection information management unit 107 in the present embodiment.
It is a flowchart showing the procedure which determines the theme song area output by this.

First, the detection information management unit 107 detects a keyword representing a theme song from subtitles (
It is determined whether or not it is set to output the detection result of the theme song subtitle (step S).
10). As a result, when it is determined that the detection result based on the theme song subtitle is set (Yes in step S10), the process proceeds to step S17 described later.

On the other hand, if it is determined that the detection result based on the theme song subtitle is not output (No in step S10), then the result of detecting a keyword representing music from the subtitle (the detection result based on the music subtitle) is output. Then, it is determined whether or not it is set (step S11). As a result, when it is determined that the detection result based on music subtitles is set to be output (Yes in step S11), the process proceeds to step S17 described later.

On the other hand, if it is determined that the detection result based on the music caption is not output (No in step S11), it is then determined whether or not the detection result based on the non-caption section is set (step S12). ). As a result, when it is determined that the detection result by the non-caption section is set to be output (Yes in Step S12), the process proceeds to Step S17 described later.

On the other hand, when it is determined that the detection result based on the non-captioned section is not output (No in step S12), the result of detecting the keyword representing OP / ED from the telop (detection by OP / ED telop) Whether or not it is set to output (result)
Step S13). As a result, if it is determined that the detection result by the OP / ED telop is set to be output (Yes in step S13), the process proceeds to step S17 described later.

On the other hand, when it is determined that the detection result by the OP / ED telop is not output (No in step S13), the result of detecting the keyword representing the provider from the telop (detection result by the provider telop) ) To determine whether or not it is set (
Step S14). As a result, when it is determined that the detection result by the providing source telop is set to be output (Yes in step S14), the process proceeds to step S17 described later.

On the other hand, if it is determined that the detection result by the provider telop is not output (
Next, it is determined whether or not it is set to output the detection result based on the providing source scene (step S15). As a result, when it is determined that the detection result by the providing source scene is set to be output (Yes in Step S15), Step S described later is performed.
Proceed to 17.

On the other hand, if it is determined that the detection result based on the source scene is not output (No in step S15), it is then determined whether or not the detection result based on the shot interval is set (step S16). ). As a result, when it is determined that the detection result based on the shot interval is set to be output (Yes in step S16), the theme song section is output to the recording / reproducing unit 11 based on the set detection result (step S17). Then, this procedure is finished.

In the present embodiment, the determination procedure of the detection information management unit 107 is performed in the order as described above, but the present invention is not limited to this. That is, the order of steps S10 to S16 is in no particular order.

Further, as a modification of the present embodiment, a procedure as shown in FIG. 9 is also conceivable. FIG. 9 is a flowchart showing a modification of the procedure for determining the theme song section to be output by the detection information management unit 107 in the present embodiment. In this modification, steps S10 to S
Using all the detection results up to 16, the theme song section to be output is determined.

In addition, it is not necessary to use about all the detection results, without using all the detection results of step S10-step S16.

In the present embodiment configured as described above and its modifications, it is possible to detect a theme song portion in a series of multi-story content. Therefore, more efficient viewing can be realized without duplicating viewing of the theme song section inserted in the serialized content.

Also, it is possible to create a playlist by collecting only the detected theme song sections. By storing together with the keywords used for the detection of the theme song section, it is possible to search when the theme song section is stored in another music content or the like stored in the recording device 12.

Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example,
Some constituent elements may be deleted from all the constituent elements shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Recording / reproducing apparatus 10 Content receiving part 11 Recording / reproducing part 12 Recording apparatus 13 Decoder part 14 Theme song detecting part 15 CM detecting part 16 Receiving part 17 Playback control part 18 I / F part 19 Output device 101 Music section detecting part 102 Provider Scene detection unit 103 Shot detection unit 104 Telop detection unit 105 Subtitle detection unit 106 Language analysis unit 107 Detection information management unit 107a Memory unit

Claims (8)

A content receiver for receiving content;
A storage device for storing the content received by the content receiving unit;
A decoder unit that separates at least a video signal, an audio signal, and a caption signal among the signals constituting the content received by the content receiving unit;
A first detection unit that detects a first section including music in the main content using the audio signal separated by the decoder unit;
A second detection unit for detecting a second section in which a character indicating a section overlapping with the serialized content exists from a character string configured by the subtitle signal existing in the first section;
A detection information management unit that determines a section in which reproduction is omitted based on a detection result by the second detection unit;
A recording / playback apparatus comprising: a playback control unit that plays back the content determined by the detection information management unit when the content is played back. A third detection for extracting a telop from the video composed of the video signal existing in the first section, and detecting a third section in which a character indicating a section overlapping the content serialized from the telop exists. Further comprising
The said detection information management part determines the area which skips reproduction | regeneration based on at least any one of the detection result by the said 2nd detection part or the said 3rd detection part. Recording / playback device. A scene indicating a content providing source is detected using at least one of a video signal and an audio signal existing in a certain section before and after the first section, and when the scene is detected, the first section is detected. And a fourth detection unit for detecting as a fourth section,
The detection information management unit determines a section in which reproduction is omitted based on at least one of detection results from the second detection unit to the fourth detection unit. Recording / playback device. When the video of the first section is switched, the first section is divided into a plurality of fifth sections having a recording time shorter than that of the first section, and recording of the plurality of fifth sections is performed. A fifth detection unit that detects the first section having an average time value within a predetermined time as a sixth section;
The said detection information management part determines the area which skips reproduction | regeneration based on at least any one of the detection result by the said 2nd detection part thru | or a 5th detection part. Recording / playback device. Separation means for separating at least a video signal, an audio signal, and a caption signal among signals constituting the received content;
First detection means for detecting a first section including music in the main content using the audio signal separated by the separation means;
Second detection means for detecting a second section in which a character indicating a section overlapping with the serialized content exists from a character string configured by the caption signal existing in the first section;
Detection information management means for determining a section for which reproduction is to be omitted, using the detection result of the second detection means;
And a playback control means for playing back by omitting the section determined by the detection information management means. A telop is extracted from the video in the first section using the video signal separated by the separating means, and a third section in which characters indicating a section overlapping with the serialized content exists is detected. And further detecting means
The said reproduction | regeneration control means determines the area which a reproduction | regeneration is skipped using either one of the detection results of the said 2nd detection means or the said 3rd detection means. How to play. A discriminating means for discriminating whether or not a scene indicating a content providing source exists by using at least one of the video signal and the audio signal existing in a fixed section before and after the first section;
And a fourth detection means for detecting the first section as a fourth section when the determination section determines that the scene exists.
The reproduction control means determines a section in which reproduction is omitted by using any one of detection results of the second detection means to the fourth detection means. How to play. A dividing means for dividing the first section into a plurality of fifth sections having a recording time shorter than that of the first section at the time when the signal of the first section is switched;
A fifth detecting means for detecting, as a sixth section, the first section in which an average value of recording times of the fifth section is within a predetermined time;
8. The reproduction control unit according to claim 7, wherein the reproduction control unit determines a section in which reproduction is omitted by using any one of detection results of the second detection unit to the fifth detection unit. How to play.

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