JP2014157460A - Content discovery support device, content display system, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content discovery support device or the like capable of reducing time lag for notification, by detecting the start of arising of a content using a message submission service.SOLUTION: The content discovery support device for detecting the start of arising of a content includes: submission message receiving means for receiving a submission message from a message sharing server; number-of-submissions calculating means for calculating the number of submissions corresponding to the content on the basis of the received submission message; and arising detecting means for detecting the start of arising of the content on the basis of the temporal change of the number of submissions, and outputting a detection signal.

Description

  The present invention relates to a content discovery support apparatus that supports discovery of exciting content from a plurality of contents.

  In recent years, the number of television broadcasts has been increasing, and more video content has been around than before, such as the provision of many video content on the Internet. It is not easy to find the content desired by the user from among these enormous amounts of video content, and tools and services for supporting the discovery of the content desired by the user are desired.

  Technologies that support the discovery of such content include, for example, technology that uses the genre or title that the user has viewed so far, and content history that has been viewed by other users who have viewed the same content as the content that they have viewed. There is technology to do.

  In addition, there is also known a technique in which a user displays a favorite channel / content by detecting the level of excitement of the content according to the audio level or scene in the content, or by using a channel selection history ( For example, see Patent Document 1 and Patent Document 2).

  In addition, recently, using a message sharing service represented by Twitter (registered trademark) that can deliver short messages written by users to other users, opinions on the channel content currently being viewed There are many things that you can do to post comments. A technique for extracting and displaying which channel content is currently attracting attention by the user according to the number of posted messages is known (for example, see Non-Patent Document 1).

JP 2009-218634 A Japanese Patent No. 4335187

Nifty Corporation, Mizozo, Internet <URL: http://miruzow.nifty.com/>

  However, the above-described channel selection candidate extraction / display method needs to determine the user's preference based on the usage history, and provides newly extracted content that is not related to the past history. I couldn't.

  In addition, the method for detecting the degree of excitement in content by video or audio requires decoding the content and extracting the audio level and scene feature amount. Implementing in real time on the channel is not practical.

  In addition, in the case of the method of detecting the current excitement using the message sharing service, the excitement level of the content (channel) has been determined based on the cumulative number of posted messages in the past. It could not be detected.

  In addition, in any of the conventional methods, a considerable time lag occurs until the swell is detected, and when the swell is detected, the user may miss the already swelled scene.

  In view of the above-described problems, the present invention provides a content discovery support apparatus and the like that can detect a rising content by reducing the time lag by detecting the start of the rising content using a message posting service.

In view of the above-described problems, the content discovery support apparatus of the present invention
A content discovery support device that detects the start of content swell,
Post message receiving means for receiving a post message from the message sharing server;
A post number calculating means for calculating the number of posts corresponding to the content from the received post message;
Based on the time change of the number of posts, the climax detection means for detecting the climax start of the content and outputting a detection signal;
It is provided with.

The content display system of the present invention includes:
A content reception display unit having a plurality of content data acquisition units, and selecting and displaying one content from the plurality of contents acquired by the plurality of content data acquisition units;
Post message receiving means for receiving a post message from the message sharing server;
Post number calculating means for calculating the number of posts corresponding to each of the plurality of contents from the received posted message;
Based on the time change of the number of posts, the climax detection means for detecting the climax start of each of the plurality of contents and outputting a detection signal;
An informing means for informing the presence of the content for which the start of the upsurge is detected when the content for which the start of the upsurge is detected is not displayed;
It is provided with.

The program of the present invention
A program executed on a computer that realizes a content discovery support function for detecting the start of content swell,
Post message reception function for receiving post messages from the message sharing server;
A post count calculation function for calculating the post count corresponding to the content from the received post message;
Based on the temporal change in the number of posts, the climax detection function that detects the climax start of the content and outputs a detection signal;
It is provided with.

  Thus, according to the present invention, the posted message is received from the message sharing server, and the number of posted messages corresponding to the content is calculated from the posted message. Then, the primary differential value and the secondary differential value of the number of postings are calculated, and based on the temporal change of the calculated primary differential value and secondary differential value, the climax of the content can be detected at an early time of the start of the climax. it can. As described above, based on the number of posts, by using up to the second derivative value of the number of posts, it is possible to detect the excitement at an early stage.

It is a figure for demonstrating the whole system in this embodiment. It is a figure for demonstrating the function structure of the service server in this embodiment. It is a figure for demonstrating the function structure of the content discovery assistance server in this embodiment. It is a figure for demonstrating the function structure of the content discovery assistance apparatus in this embodiment. It is a figure for demonstrating the operation | movement flow of the content discovery assistance server in this embodiment. It is a figure for demonstrating the operation | movement flow of the swelling detection part in this embodiment. It is a figure for demonstrating the operation example in this embodiment. It is a figure for demonstrating the operation example in this embodiment. It is a figure for demonstrating the operation example in this embodiment. It is a figure for demonstrating the 1st application example in this embodiment. It is a figure for demonstrating the content display apparatus in this embodiment. It is a figure for demonstrating the example of a screen in this embodiment. It is a figure for demonstrating the 2nd application example in this embodiment. It is a figure for demonstrating the operation | movement flow of the viewing-and-listening process in this embodiment. It is a figure for demonstrating the operation function in this embodiment. It is a figure for demonstrating the operation | movement flow of the viewing-and-listening process in this embodiment. It is a figure for demonstrating the example of a screen in this embodiment. It is a figure for demonstrating the example of a screen in this embodiment.

  Next, a detailed embodiment of a content display device to which the content discovery support method of the present invention is applied will be described.

[1. overall structure]
First, the overall configuration of the system will be described. FIG. 1 is a diagram showing the entire system 1. In the system 1, a content discovery support server 10, a service server 20, and a content discovery support device 30 are connected to a network.

  The service server 20 is a server that provides various services such as a message sharing service and an SNS service. Thereby, for example, services such as Twitter, Facebook, Google+, and Shinnami Weihiro are provided.

  The content discovery support server 10 acquires a shared message provided by the service server 20, generates content discovery support information based on the shared message, and sends the content discovery support information to the content discovery support device 30.

  The content discovery support apparatus 30 receives content discovery support information from the content discovery support server 10 and processes it to generate information necessary for content discovery. The content discovery support apparatus 30 is connected to or built in a television or recorder device, and performs processing such as displaying the generated information on a screen and recording based on the generated information.

  Here, if the content is content that is broadcast and distributed in real time, for example, content that can be identified by the channel of the broadcast station, the broadcast station, and the distribution station (service) (for example, Ach broadcast as of 19:00) , Bch, Cch...) And storage-type on-demand distribution, streaming distribution, and moving image distribution by a moving image site, it means each content. That is, it means content that the user views, and the content identification information may be any information as long as it is information necessary for specifying the content.

  The term “content” includes, for example, the meaning of a broadcast program, a channel (broadcast station), and the like. That is, any standard that can be selected by the user (viewer) may be used.

[2. Functional configuration]
Next, individual functional configurations of the present system will be described in order with reference to the drawings.

[2.1 Service server]
First, the functional configuration of the service server 20 will be described with reference to FIG. As illustrated in FIG. 2, the service server 20 includes a control unit 200, a storage unit 210, and a network I / F unit 220. First, the service server 20 generates a group including each terminal (not shown) on the network and the content discovery support server 10.

  The control unit 200 is a functional unit for controlling the entire service server 20. The control unit 200 implements various functions by reading and executing various programs stored in the storage unit 210, and includes, for example, a CPU (Central Process Unit).

  The storage unit 210 is a functional unit that stores various programs and various data necessary for the operation of the service server 20. The storage unit 210 includes, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like.

  The network I / F unit 220 is a functional unit for the service server 20 to communicate with other devices and servers. For the network I / F unit, for example, wired connection such as Ethernet (registered trademark), wireless LAN such as IEEE802.11a / b / g / n, wireless connection such as 3G line, WiMAX is used.

  Here, as an outline of the operation of the service server 20, a message posted from a terminal connected to the network is received, and the received message is distributed to a terminal or server belonging to the generated group on the network. This makes it possible to share the posted message among the terminals belonging to the group.

[2.2 Content discovery support server]
Next, the functional configuration of the content discovery support server will be described with reference to the drawings. FIG. 3 shows the functional configuration of the content discovery support server 10.

  The content discovery support server 10 includes a control unit 100, a rising detection unit 110, a storage unit 120, and a network I / F unit 130.

  The control unit 100 is a functional unit for controlling the entire content discovery support server 10. The control unit 100 implements various functions by reading and executing various programs stored in the storage unit 120, and is configured by, for example, a CPU (Central Process Unit).

  The network I / F unit 130 is a functional unit for the content discovery support server 10 to communicate with other devices and servers. For the network I / F unit, for example, wired connection such as Ethernet, wireless LAN such as IEEE802.11a / b / g / n, 3G line, and wireless connection such as WiMAX are used.

  The upsurge detection unit 110 is a functional unit for detecting that the content that is currently being broadcast is up using the posted message information obtained from the service server 20.

  The number of messages of the posted message information, processing information based on the number of messages, and the like are stored in the storage unit 120 as the degree of excitement 122.

  The storage unit 120 is a functional unit that stores various programs and various data necessary for the operation of the content discovery support server 10. The storage unit 120 includes, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like. The storage unit 120 stores the degree of swell 122 described above.

  Note that, as an outline of the operation of the content discovery support server 10, content with high viewer interest and content with high attention are extracted using the degree of excitement 122 that is statistical information, and the network I / F unit 130 is used. It is transmitted to the content discovery support apparatus 30.

[2.3 Content Discovery Support Device]
Next, the functional configuration of the content discovery support apparatus 30 will be described. FIG. 4 shows the functional configuration of the content discovery support apparatus 30.

  As illustrated in FIG. 4, the content discovery support apparatus 30 includes a control unit 300, a rising reception unit 310, a conversion unit 320, a storage unit 330, a network I / F unit 340, and an output unit 350. It is configured.

  The control unit 300 is a functional unit for controlling the entire content discovery support apparatus 30. The control unit 300 realizes various functions by reading and executing various programs stored in the storage unit 330, and is configured by, for example, a CPU (Central Process Unit or the like).

  The climax receiving unit 310 receives the climax detection information transmitted from the content discovery support server 10 via the network I / F unit 340.

  The conversion unit 320 is a functional unit for converting the swell detection information transmitted from the content discovery support server 10 received by the swell receiving unit 310 into an appropriate format. Examples of the appropriate format include a bitmap format for superimposing and displaying on a display such as a television or a smartphone, an HTML format, and a BML format. If display is not essential, a data expression format such as XML may be used. Moreover, it is good also as audio formats, such as AAC and WAV format for outputting to acoustic apparatuses, such as a speaker.

  The storage unit 330 is a functional unit that stores various programs and various data necessary for the operation of the content discovery support apparatus 30. The storage unit 330 is configured by, for example, a semiconductor memory, an HDD (Hard Disk Drive), or the like.

  The network I / F (interface) unit 340 is a functional unit for the content discovery support apparatus 30 to communicate with an external device such as the content discovery support server 10, a television, or a smartphone. The network I / F unit 340 uses, for example, wired connection such as Ethernet, wireless LAN such as IEEE802.11a / b / g / n, wireless connection such as 3G line, WiMAX.

  The output unit 350 is a functional unit for outputting swell detection information to an external device. In order to transfer the swell detection information to an external device such as a television, a tablet, or a smartphone, a signal is generated in accordance with a standard such as DVI, HDMI, or USB. When outputting via the network I / F unit 340, a signal is generated in accordance with the communication protocol.

[3. Process flow]
Next, the operation flow of the content discovery support server 10 in this embodiment will be described with reference to FIG.

  First, the climax detection unit 110 reads the value of the climax 122 that is the statistical information of the posted message from the storage unit 120, and performs a climax start waiting process (step S102).

  When the swell detection unit 110 detects the swell start (step S104; Yes), the start of the swell is notified via the network I / F unit 130 (for example, the swell start information is transmitted to the content discovery support device 30) (step S104). S106).

  Next, the swell detection unit 110 reads the value of the swell degree 122 that is the statistical information of the posted message from the storage unit 120, and performs a swell end waiting process (step S108).

  When the swell detection unit 110 detects the swell end (step S110; Yes), the end of the swell is notified via the network I / F unit 130 (for example, swell end information is transmitted to the content discovery support apparatus 30). (Step S112).

  Here, the processing flow of the swell detection unit 110 will be described with reference to the operation flow of FIG.

  First, the posted message transmitted from the service server 20 that provides the message sharing service is acquired (received) (step S202). An attribute is added to the posted message, and this message is associated with a channel. For example, in the case of Twitter, a post message associated with Ach may have a tag related to a broadcasting station such as “#ach”, or a tag according to the content. In the present embodiment, the tag is described as a tag starting with “#”, but it may be associated with other identification information such as an identification number, a message ID, and an identification character string.

  Next, the number of posts is calculated for each content (step S204). The number of posts for each content may be calculated for, for example, the content currently being viewed, or may be calculated for each channel of the content being broadcast / distributed at the current time.

  Here, various methods are conceivable as a method for calculating the number of posts. For example, the number of posts of a post message associated with each content is set to the number of comments of Twitter (registered trademark) and the number of retweets, for example, every minute. It is possible to consider a method of counting.

  Subsequently, the first derivative of the number of posts is calculated (step S206), and then the second derivative is calculated (step S208). Here, steps S206 and S208 are performed for each content. The calculated differential value is temporarily stored. Temporary storage is performed within a range where the primary differential value is positive.

  Then, a change in swell is first detected based on temporal changes in the primary differential value and the secondary differential value (step S210). Based on the detected change in swell, the start of swell for each content is detected (step S212). Further, the degree of excitement is calculated (step S214), and the end of the excitement of the content is detected (S216). Here, the start of the excitement is a time when the number of posts starts to increase every moment, and the end of the excitement is a time when the post passes the peak and the number of posts itself decreases.

  FIG. 7 exemplifies the time change (thin line) of the first derivative and the time change (dotted line) of the second derivative corresponding to the time change (thick line) of the number of posts. In the figure, the start of the swell is represented by ts, and the end of the swell is represented by te. As shown in the figure, the portion ts at which the number of posts starts to increase is the first derivative is positive and the second derivative is increased. In the peak portion te of the number of posts, the first derivative is decreased toward 0, and the second derivative is increased. A characteristic change in the first and second derivative values, such as a large minus, can be seen.

  In order to calculate the differential value accurately, fine time interval data is required. However, in this example, for the sake of explanation, the increase / decrease in the number of posts will be simply used as the primary derivative. Is the second derivative, and the number of posts, the first derivative, and the second derivative data (for all 22 sections) for a certain content are illustrated in FIG. In addition, FIG. 9 illustrates a change in the data over time in a line graph. In the figure, the number of posts is plotted as a thick line, the primary differential value as a dashed line, and the secondary differential value as a dotted line.

Here, as a specific method for obtaining the differential value, in the present embodiment, it is calculated using a central difference method. Specifically, a difference is obtained between n + 1 and n−1 for the point n to be differentiated (that is, an average of the forward difference and the backward difference is obtained).
Δ is a central difference operator, Δ is a forward difference operator, and ▽ is a backward difference operator.

  Furthermore, since the differential value at the time point n-1 is obtained when the number of postings of n is obtained, the differential value may be calculated by shifting one segment at a time. In this case, more accurate excitement can be detected, but in the present embodiment, in order to clarify the relationship between the number of posts and the differentiation, it is described as it is.

Further, the second order difference (secondary differential) is calculated by the following mathematical formula.

  The excitement of posting on the message sharing service occurs after the event on the live content, so in the case of an unexpected short-term event, it may have already ended by the time the posting gets excited. On the other hand, if the number of submissions starts to rise gradually and gradually (primary differential value is more than a predetermined period), if there is a sudden rise (secondary differential value is more than a predetermined threshold) If it can be caught, it will be possible to detect an event of some size and long duration that is worth selecting before the content ends.

  Therefore, in the present embodiment, for example, the rise start time ts is detected at a time when the primary differential value at the two times of the previous time and the current time is positive and the value of the secondary differential value is equal to or greater than a predetermined threshold value. . In addition, the end time te of the excitement is detected at the time when the number of posts starts to decrease, that is, at the time when the primary differential value switches from positive to negative.

  Specifically, when the first derivative value and the second derivative value of the previous time and the current time are acquired, the first derivative value of the two times is positive, and the second derivative value of the current time is equal to or greater than a predetermined threshold value, It is determined that the climax starts, and information is output, and at the same time, the climax end determination is started. At the time when the value of the first derivative changes from positive to negative, it is determined that the excitement has ended, and information is output.

  For example, in FIG. 9, the primary differential values at time 4 and time 5 are continuously positive, but are dropped because the secondary differential value at time 5 is negative. On the other hand, at time 9, the secondary differential value has risen sharply, and the primary differential values at both time 8 and time 9 are both positive. The number of posts at time 5 and time 10 is also 800, but there is no sign in the vicinity of time 5 and there is a sudden rise, whereas around time 10 is a sudden rise while gradually starting to rise. . Thus, if attention is paid to the temporal change of the primary differential value and the secondary differential value, it is considered that there is a high possibility of finding a feature that cannot be captured only by the absolute value of the number of posts.

  In the above, the primary differential values at the two times of the previous time and the current time are used for the determination, but three or more primary differential values including the primary differential value at the previous time are further used for the determination. It doesn't matter.

  In addition, the determination of the start of excitement is performed, for example, when the secondary differential value exceeds the threshold, for example, the time when the primary differential value has changed from negative to positive, that is, the number of posts at the time when there is a possibility of start of excitement, and the current time If the number of posts is acquired and the increase is 200% or more, it may be determined that the excitement starts.

  In the example of FIG. 8, time 9 is a 100% increase in the number of posts 200 compared to the number of posts 100 at time 7 that may start excitement. Since time 10 is an increase of 700% in the number of posts 800, time 10 is detected as a start of excitement.

  In this way, the swell detector 110 detects the start of swell of content based on the temporal change in the number of posts corresponding to the content. More specifically, the start of content excitement is detected based on temporal changes in the primary differential value and secondary differential value of the number of posts.

  In the graph of the change in the number of postings that is the basis of processing (thick line in FIG. 9), various noises can be mixed during actual operation. For this reason, it is possible to more accurately detect the start / end of the swell by applying a process for removing certain noise such as a low-pass filter before the differentiation process.

  Finally, the detection result is output. For example, in the format of (indicator indicating the start or end of swell, actual detection time), it is output each time when the start of swell and the end of swell are detected.

  The process for detecting the start and end of swell in one content (channel) has been described above. However, when the start and end of swell are detected in a plurality of contents (channels), for example, (Content 1, Start of swell, ts− 1) The timing when the start or end of the climax is detected in the format of (content 2, climax end, te-2, etc., (information specifying the content, indicator indicating the start or end of the climax, actual detection time)) And you can output each time.

  In actual operation, it is difficult to use the start of frequent swells in multiple contents (channels). In particular, if multiple swell starts are detected at the same time, it may be difficult for the user depending on the degree of swells. It is also possible to perform a process of determining whether to notify.

  For example, a method of notifying content that is more exciting by comparing the degree of excitement at the start of the excitement detected in a plurality of contents can be considered.

  Using the detection of the climax start time ts (step S212) as a trigger, the climax degree calculation is started (step S214).

The degree of swell 122 can be calculated by the following method, for example.
Method A: The value of the second derivative of the number of posts at the climax start time is detected.
Method B: An increase rate (%) of the number of posts at the climax start time is calculated with respect to the number of posts at the time when the primary differential value of the number of posts has changed from negative to positive immediately before the climax start time.

A calculation result of the degree of excitement 122 is shown below for the post count data illustrated in FIG.
Calculation result of climax 122 at time 9 by method A: 520
Calculation result of climax 122 at time 10 by method B: 700%

With the above method, it is conceivable to detect the start of swell for all channels currently being broadcast, and output only the start of swell of channels with a higher degree of swell.
For example, when a plurality of swell starts are detected at the same time, only the swell start information of a channel having a greater swell level is output.

  It is also possible to apply a filter by providing a threshold value. For example, the climax degree of the climax start time is stored before the climax ends, and when the climax start is detected in another channel, the detection information is dropped if the climax degree is lower than the previous excitement degree stored. .

  With the above-described configuration, it is possible to detect the excitement of content at a relatively early time when the excitement starts. By using this, the user can reduce the probability of missing a really interesting content.

[4. Application example]
For the contents described above, a combination with another apparatus such as a digital broadcast receiving apparatus is conceivable. Hereinafter, application examples of the present invention will be described.

[4.1 First application example]
First, as a first application example, an application example in which the contents in the present embodiment described in FIG. 1 and subsequent figures are combined with the content display device 40 will be described with reference to FIG.

  In this application example, while watching with the content display device 40 based on the rising detection information, the rising of another content broadcast in the same time zone is grasped. Since the components other than the content display device 40 and the broadcast station 45 are the same as those already described, description thereof will be omitted.

  FIG. 11 is a functional configuration diagram schematically illustrating the content display device 40.

  The tuner unit 410 is a functional unit that receives a broadcast wave corresponding to a channel desired by the user among broadcast waves transmitted from the broadcast station 45 via an antenna. The received broadcast wave is output to the data separator 420 as content data.

  The content acquisition unit 415 is a functional unit for acquiring desired content from, for example, content acquired via a network or content that has already been acquired. The acquired content data is output to the data separator 420. Note that the tuner unit 410 and the content acquisition unit 415 are all functional units that acquire content data, and hence are collectively referred to as a content data acquisition unit.

  The content discovery support apparatus 30 transmits the content identification information acquired by the tuner unit 410 or the content acquisition unit 415 to the content discovery support server 10. Based on the content identification information, the content discovery support server 10 detects excitement of content other than the content already acquired (currently viewed or viewed) by the content data acquisition unit.

  The data separation unit 420 is a functional unit for separating the input content data into various signals. The separated signal is output to the decoding unit 430.

  Specifically, a signal related to video is output to the video decoding unit 432, and a signal related to audio is output to the audio decoding unit 434. For example, in the case of digital broadcasting, since the broadcast data is in a TS (Transport Stream) packet format defined by the MPEG-2 Systems standard, it is separated by a PID (Packet ID) assigned to the TS.

  The decoding unit 430 is a functional unit for decoding (demodulating) various data from the input signal. In the case of this embodiment, a video decoding unit 432 that decodes video data and an audio decoding unit 434 that demodulates audio data are included.

  The display composition unit 440 synthesizes the decoded video and the swell detection information provided from the content discovery support apparatus 30 and displays them.

(Screen example)
Next, description will be made using an example of a display screen of the content display device 40 (a display screen output from the display composition unit 440). FIG. 12 is an example of a display screen W100 on which content is displayed. On the screen, the content is decoded and displayed by the tuner.

  At this time, if the swell of the A-CH is detected by the swell detector 110, for example, “A-CH is swelled” is displayed in the region R10, for example, from the start to the end of the swell. Thereby, the user can grasp | ascertain the content currently excited in real time.

  In addition to the display, the means for notifying the excitement may be notified by, for example, voice or alarm sound.

  Thus, based on the first application example, the user can grasp the excitement of other content (content other than the viewing channel) in real time while viewing the content (for example, broadcast content of a predetermined channel).

[4.2 Second Application Example]
Next, a second application example will be described with reference to FIG. In this application example, by combining with a digital broadcast receiving apparatus 50 including two or more master-slave tuners, a function for quickly selecting a channel is added to the extracted climax channel.

  By providing a plurality of tuner units 510, data separation units 520, and decoding units 530 in the application example of FIG. 13, it is possible to switch and output received broadcasts.

  For example, as shown in FIG. 13, the tuner unit 510 includes a first tuner unit 512 and a second tuner unit 514, the data separation unit 520 includes a first data separation unit 522 and a second data separation unit 524, and the decoding unit 530 includes A first decoding unit 532 and a second decoding unit 534 are included.

  A signal decoded by the combination of the tuner unit 510, the data separation unit 520, and the decoding unit 530 is switched and output by the display switching synthesis unit 540, whereby a plurality of contents can be switched and output. The digital broadcast receiving apparatus 50 includes a user instruction input unit (not shown) that receives a switching instruction from the user, and inputs the switching instruction to the display switching composition unit 540.

  For example, the first tuner unit 512, the first data separation unit 522, and the first decoding unit 532 are used as a main tuner, and the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534 are used as sub-tuners. The content can be switched and output.

  In the present embodiment, two systems are described as an example for convenience of explanation, but three or more systems may be provided, for example. Furthermore, either main tuner or secondary tuner may be used. For example, the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534 are selected as the first sub-tuner, but this may be selected as the main tuner by receiving for a predetermined time. .

  Further, instead of the first tuner unit 512 and the second tuner unit 514, for example, a content acquisition unit for acquiring desired content from content acquired via a network or content already acquired may be provided. Good. Similarly to the above, the tuner unit and the content acquisition unit are collectively referred to as a content data acquisition unit. However, in the following, a case where a tuner unit is provided will be described as an example.

  Subsequently, an operation flow of viewing processing in the present embodiment will be described with reference to FIG. Specifically, the viewing process using the result of the swell detection process in FIG. 6 will be described.

  First, content output processing is executed by the main tuner (step S302). Specifically, the content decoded by the first tuner unit 512, the first data separation unit 522, and the first decoding unit 532 is selected and output by the display switching composition unit 540.

  Next, when the swell is detected by the swell detector 110 (step S304; Yes), the swell detection is notified (step S306).

  Here, the content of the channel whose rise has been detected is received by the sub-tuner (second tuner unit 514, second data separation unit 524, and second decoding unit 534) (step S307).

  Next, it is determined whether or not the user has performed a channel selection operation for the exciting channel (step S308). If the tuning operation has not been performed before the excitement is finished (step S308; No), the excitement notification is cleared (step S318), and the processing is repeated from step S302. That is, the display of the rise detection notified in step S306 is deleted, and reception at the sub tuner is stopped.

  On the other hand, when the channel selection operation is performed on the exciting channel (step S308; Yes), the display switching combining unit 540 displays the sub tuner (second tuner unit 514, second data separation unit 524, and second decoding unit 534). ) To display the content output (step S310).

  If a channel selection operation for returning to the original channel is performed within a predetermined time after tuning to the rising channel (step S312; Yes), the rising notification is cleared (step S218), and the processing is repeated from step S202. . That is, the content received by the main tuner is displayed again. Also, the reception of the content received at the secondary tuner is stopped.

  On the other hand, when the channel selection operation for returning within the predetermined time is not performed (step S312; No → step S314; Yes), the currently selected tuner becomes the main tuner (step S316). For example, when contents decoded by the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534 are displayed in step S310, these are set as the main tuner and the first tuner unit 512 is displayed. The first data separation unit 522 and the first decoding unit 532 serve as sub-tuners.

  Here, in step S308, various methods are conceivable as a method for determining the presence or absence of a channel selection operation. For example, when it is determined that a channel selection operation has not been performed within a predetermined time by providing a timer unit, it may be determined that there is no operation.

  In addition, when the swell detection unit 110 determines that the swell has ended, it may be determined that the operation has not been performed. It should be noted that it may be determined that there is no channel selection for the current channel when a higher climax is detected in another channel before the climax ends.

  Note that the channel selection operation in step S308 can be more quickly selected to the climax channel by providing a dedicated operation function in addition to the normal channel number designation operation. A case where a method such as so-called round trip channel selection is used may be considered.

  As shown in FIG. 15, as an example of an operation unit having a dedicated operation function, for example, a channel selection button 910 for selecting each channel and a round trip button 920 for realizing a round trip function to be described later. And various operation cursors, operation instruction buttons 930 for selecting a selected subject vertically and horizontally, and inputting a decision, and the like.

  Next, the operation flow of the viewing process taking into account the channel selection operation using the round trip button will be described with reference to FIG.

  First, content output processing is executed by the main tuner (step S402). Specifically, the content decoded by the first tuner unit 512, the first data separation unit 522, and the first decoding unit 532 is selected and output by the display switching composition unit 540.

Next, when a swell is detected by the swell detector 110 (step S404; Yes), the swell detection is notified (step S406).

  Here, the content of the channel for which the climax has been detected is received by the secondary tuner (the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534).

  Next, it is determined whether or not a round trip channel selection operation has been performed by the user (step S408). If the round trip channel selection operation has not been performed before the excitement is completed (step S408; No), the excitement notification is cleared (step S418), and the processing is repeated from step S402. In other words, the climax detection display notified in step S406 is deleted, and reception at the sub-tuner is stopped.

  On the other hand, when the round trip channel selection operation is performed (step S408; Yes), the display switching composition unit 540 receives the sub tuner (the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534). The content output is switched to and displayed (step S410).

  When an operation for returning within a predetermined time is performed during the round trip channel selection (step S412; Yes), the climax notification is cleared (step S418), and the processing is repeatedly executed from step S402. That is, the content of the round trip channel selection is cleared, and the content received by the main tuner is displayed again. Also, the reception of the content received at the secondary tuner is stopped.

  On the other hand, when the operation of returning within the predetermined time is not performed (step S412; No → step S414; Yes), the currently selected tuner becomes the main tuner. For example, when contents decoded by the second tuner unit 514, the second data separation unit 524, and the second decoding unit 534 are displayed in step S410, these are set as the main tuner and the first tuner unit 512 is displayed. The first data separation unit 522 and the first decoding unit 532 serve as sub-tuners.

  Here, in step S408, various methods are conceivable as a method for determining whether or not there is a round trip channel selection operation. For example, when it is determined that a channel selection operation has not been performed within a predetermined time by providing a timer unit, it may be determined that there is no operation.

  In addition, when the swell detection unit 110 determines that the swell has ended, it may be determined that the operation has not been performed. It should be noted that it may be determined that there is no channel selection for the current channel when a higher climax is detected in another channel before the climax ends.

[4.2.1 Screen example]
Next, description will be given using an example of a display screen of the digital broadcast receiving device 50 of the second application. FIG. 12 is an example of a display screen on which content is displayed. This content is decoded and displayed by the main tuner.

  At this time, if the swell of the A-CH is detected by the swell detector 110, for example, “A-CH is swelled” is displayed in the region R10. Thereby, the user can grasp in real time that the content of other channels is exciting.

  At this time, for example, when a round trip button 920 is pressed, a round trip channel selection is performed. Then, as shown in FIG. 17, the content is decoded and displayed by the sub tuner.

  At this time, “Round trip channel selection” is displayed in the area R20 of the display screen. As a result, the user knows that the round-trip channel selection is currently being performed. When an operation of returning within a predetermined time is performed, the content received by the main tuner is switched and displayed again.

  If the operation of returning within a predetermined time is not performed, the currently selected tuner becomes the main tuner, and the displayed content is continuously displayed. In this case, the display of region R20 is erased.

  In the case of normal channel selection, “During exciting channel selection, original channel is OOCH” or the like may be displayed in region R20.

  As means for notifying the excitement, as shown in FIG. 18, a picture-in-picture area R30 may be provided in the display screen, and the content decoded by the sub-tuner may be displayed in the picture-in-picture format. In this case, the display switching composition unit 540 can display the content decoded by the main tuner on the main display screen, and display the content decoded by the sub-tuner in a small picture-in-picture.

  In the second application example described above, as means for notifying the excitement, means for displaying the effect on the display screen is used. However, for example, sound or alarm sound may be notified.

  As described above, in the above-described embodiment, since two or more tuners are operating at the same time, when another channel is excited while viewing a certain channel, the channel is switched once and returned. Zapping viewing can be performed quickly.

[5. Modified example]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design and the like within the scope of the present invention are also within the scope of the claims. include. For example, the description has been made assuming that the content discovery support server 10 and the content discovery support device 30 are connected via a network. However, the content discovery support server 10 may include the function of the content discovery support device 30. .

[5.1 First Modification]
In the above-described embodiment, the description has been given on the assumption that two tuners are built in one content display device. However, as another embodiment, two tuners are built in different content display devices. The form to be considered is also conceivable. In this case, if the content discovery support device and the content display device are connected via a communication path such as a network and the user is watching the content on the content reception display device, It is also conceivable to give an instruction from the content discovery support apparatus such as selecting a channel in advance or recording the content reception display apparatus.

[5.2 Second Modification]
In the above-described embodiment, the content discovery support apparatus has been described on the assumption that it is an independent apparatus. However, the present invention is not necessarily limited to such a form. A form in which a content discovery support device is built in a tablet, smartphone or PC at hand and combined with a content reception display device such as a digital TV is also conceivable.

  For example, when a tablet or smartphone with a built-in content discovery support apparatus is connected to a digital TV via a communication path such as a network, when the content discovery support apparatus detects an excitement, R10 in FIG. The detection is displayed in the form of R20 of 17 and R30 of FIG. The user can select the displayed content and display it on the television as necessary.

  By setting it as the above embodiment, the television can perform multi-viewing, which is the main viewing, channel selection and viewing of the channel that is excited on the tablet, smartphone or PC at hand.

  In addition, an embodiment is also conceivable in which the content that the system is excited is automatically selected one after another without the user's channel selection operation.

  Furthermore, it is good also as a form which records on the back instead of channel selection. For example, by using a second tuner built in the TV or another tuner connected to the network, the content sections that have risen without permission according to instructions from the content discovery support device built in the tablet at hand are recorded one after another. Various embodiments are also conceivable.

[5.3 Third Modification]
In the above embodiment, the content discovery support device and the content reception display device have been described assuming different forms, but the present invention is not necessarily limited to such a form. For example, as another embodiment, a configuration in which a content discovery support device is combined with a content reception display device such as incorporating a content discovery support device in a television or a recorder is also conceivable.

[6. Others]
Thus, according to this embodiment,
A content discovery support device that detects the start of content swell,
Post message receiving means for receiving a post message from the message sharing server;
A post number calculating means for calculating the number of posts corresponding to the content from the received post message;
Based on the time change of the number of posts, the climax detection means for detecting the climax start of the content and outputting a detection signal;
A content discovery support apparatus characterized by comprising

Also,
The swell detection means can realize a content discovery support apparatus characterized by detecting the swell start of each content for a plurality of contents.

Also,
The swell detection means calculates a primary differential value and a secondary differential value of the number of posts, and when the primary differential value is a positive value for a predetermined period and the secondary differential value is a predetermined value or more, It is possible to realize a content discovery support device characterized by detecting the start of excitement.

Also,
The rising detection means is the second derivative value of the rising start time, or
Calculating either the ratio of the number of posts at the climax start time to the number of posts at the time before the climax start and the first derivative value changing from negative to positive Can be realized.

Also,
The swell detection means calculates a primary differential value of the number of posts, and when the ratio of the current number of posts to the number of posts at the time when the primary differential value has changed from negative to positive is greater than or equal to a predetermined value, A content discovery support apparatus characterized by detecting the start of the swell can be realized.

Also,
The swell detection means calculates a ratio of the number of posts at the swell start time with respect to the number of posts at the time when the primary differential value changes from negative to positive as a swell level. Can be realized.

Also,
The content detection support apparatus can realize a content discovery support device that determines notification to a user according to the level of the level of swell or by comparing the level of swell with a predetermined threshold.

Also,
A content reception display device that has a plurality of content data acquisition units, and selects and displays one content from the plurality of contents acquired by the plurality of content data acquisition units;
A content display device characterized by comprising the content discovery support device described above can be realized.

Also,
A content reception display device that has a plurality of content data acquisition units, and selects and displays one content from the plurality of contents acquired by the plurality of content data acquisition units;
A content display device characterized by being connected to the content discovery support device via a communication path can be realized.

Also,
The content display device can realize a content display device that notifies the presence of the content that has been detected to start the excitement when the content that has been detected to start the excitement by the content discovery support device is not displayed. .

Also,
The content display device can realize a content display device that notifies the information of the content where the start of the swell is detected by an image, sound, or alarm sound.

Also,
The content receiving device sets the content data acquisition unit that acquires the content being displayed as a main content data acquisition unit, and sets the other content data acquisition units as subordinate content data acquisition units,
When the detection signal is obtained from the content discovery support device, the content corresponding to the detection signal is acquired in advance in the subordinate content data acquisition unit,
According to a user instruction, it is possible to realize a content display device that performs a process of switching and displaying the content acquired by the main content data acquisition unit and the content acquired by the subordinate content data acquisition unit.

Also,
When a predetermined time has elapsed after performing the process of switching and displaying, the subordinate content data acquisition unit is set as a main content data acquisition unit, and the main content data acquisition unit is set as a subordinate content data acquisition unit A content display device characterized by that. Can be realized.

  Further, it is possible to realize a content display device characterized in that the process of switching and displaying and the process of returning the process of switching and displaying are performed by a round trip button.

A content discovery support method for detecting the start of content swell,
Receiving a posted message from the message sharing server;
Calculating the number of posts corresponding to the content from the received post message;
Detecting the start of swell of the content based on the temporal change in the number of posts, and outputting a detection signal;
The content discovery support method characterized by having

Also,
A program executed on a computer that realizes a content discovery support function for detecting the start of content swell,
Post message reception function for receiving post messages from the message sharing server;
A post count calculation function for calculating the post count corresponding to the content from the post message;
Based on the temporal change in the number of posts, the climax detection function that detects the climax start of the content and outputs a detection signal;
Can be realized.

Also,
A content reception display unit having a plurality of content data acquisition units, and selecting and displaying one content from the plurality of contents acquired by the plurality of content data acquisition units;
Post message receiving means for receiving a post message from the message sharing server;
A post number calculating means for calculating the number of posts corresponding to each of the plurality of contents from the post message;
Based on a temporal change in the number of posts, a swell detection unit that detects a swell start of each of the plurality of contents and outputs a detection signal;
A content display system can be realized that includes notifying means for notifying the presence of the content for which the start of swell is detected when the content for which the swell start has been detected by the swell detection means is not displayed.

Also,
Acquiring a plurality of contents;
Selecting and displaying one content from the plurality of contents;
Receiving a posted message from the message sharing server;
Calculating the number of posts corresponding to each of the plurality of contents from the received posted message;
Detecting a swell start of each of the plurality of contents based on a temporal change in the number of posts, and outputting a detection signal;
When the content for which the start of the swell is detected by the swell detection means is not displayed, it is possible to realize a content display method comprising a step of notifying the presence of the content for which the swell start has been detected.

Also,
A content reception display unit having a plurality of content data acquisition units, and selecting and displaying one content from the plurality of contents acquired by the plurality of content data acquisition units;
Post message receiving means for receiving a post message from the message sharing server;
A post number calculating means for calculating the number of posts corresponding to each of the plurality of contents from the post message;
Based on a temporal change in the number of posts, a swell detection unit that detects a swell start of each of the plurality of contents and outputs a detection signal;
An informing means for informing the presence of the content for which the start of the upsurge is detected when the content for which the start of the upsurge is detected is not displayed;
It is possible to realize a content display program characterized by having

  Moreover, the content display apparatus mentioned above is good also as notifying the information of the excitement content detected from the said content discovery assistance apparatus in formats, such as an image, an audio | voice, and an alarm sound which a user understands.

  In addition, the above-described content receiving apparatus is integrally provided with two or more digital broadcast receiving tuners, or is connected via a communication channel, and the tuner that is currently receiving the content is the main tuner and the other tuners are subordinate. As a tuner, when a detection signal is obtained from the swell detection means, the swell content may be selected by the subordinate tuner and switched to the content of the main tuner according to a user instruction.

  The master tuner and the master-slave relationship may be switched when a predetermined time has elapsed since switching to the content received by the slave tuner described above.

  In addition, the content being received by the master / slave tuner according to the user's instruction may be switched quickly by a round trip button.

  In addition, the program that operates in each device in the embodiment is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments. Information handled by these devices is temporarily stored in a temporary storage device (for example, RAM) at the time of processing, then stored in various ROM or HDD storage devices, and read and corrected by the CPU as necessary. • Writing is performed.

  Here, as a recording medium for storing the program, a semiconductor medium (for example, ROM, a non-volatile memory card, etc.), an optical recording medium / a magneto-optical recording medium (for example, a DVD (Digital Versatile Disc), MO (Magneto Optical), etc. Disc), MD (Mini Disc), CD (Compact Disc), BD, etc.), magnetic recording medium (for example, magnetic tape, flexible disk, etc.), etc. In addition, by executing the loaded program, not only the functions of the above-described embodiment are realized, but also based on the instructions of the program, the processing is performed in cooperation with the operating system or other application programs. The functions of the invention may be realized.

  In addition, when distributing to the market, the program can be stored and distributed in a portable recording medium, or transferred to a server computer connected via a network such as the Internet. In this case, of course, the storage device of the server computer is also included in the present invention.

  In addition, a part or all of each device in the above-described embodiments may be realized as an LSI (Large Scale Integration) that is typically an integrated circuit. Each functional block of each device may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, it is of course possible to use an integrated circuit based on this technology.

1: System 10: Content discovery support server 20: Service server 30: Content discovery support device 40: Content display device 45: Broadcast station 50: Digital broadcast receiver 100: Control unit 110: Swell detection unit 120: Storage unit 122: Swell Degree 130: Network I / F unit 200: Control unit 210: Storage unit 220: Network I / F unit 300: Control unit 310: Swell receiving unit 320: Conversion unit 330: Storage unit 340: Network I / F unit 350: Output Unit 410: tuner unit 415: content acquisition unit 420: data separation unit 430: decoding unit 432: video decoding unit 434: audio decoding unit 440: display synthesis unit 510: tuner unit 512: first tuner unit 514: second tuner unit 520: Data separation unit 52 : First data separation unit 524: Second data separation unit 530: Decoding unit 532: First decoding unit 534: Second decoding unit 540: Display switching composition unit 910: Channel selection button 920: Round trip button 930: Operation instruction button

Claims (5)

A content discovery support device that detects the start of content swell,
Post message receiving means for receiving a post message from the message sharing server;
A post number calculating means for calculating the number of posts corresponding to the content from the received post message;
Based on the time change of the number of posts, the climax detection means for detecting the climax start of the content and outputting a detection signal;
A content discovery support apparatus characterized by comprising:   2. The content discovery support apparatus according to claim 1, wherein the swell detection unit detects a swell start of each content for a plurality of contents.   The swell detection means calculates a primary differential value and a secondary differential value of the number of posts, and when the primary differential value is a positive value for a predetermined period and the secondary differential value is a predetermined value or more, The content discovery support apparatus according to claim 1, wherein a start of swell is detected. A content reception display unit having a plurality of content data acquisition units, and selecting and displaying one content from the plurality of contents acquired by the plurality of content data acquisition units;
Post message receiving means for receiving a post message from the message sharing server;
Post number calculating means for calculating the number of posts corresponding to each of the plurality of contents from the received posted message;
Based on the time change of the number of posts, the climax detection means for detecting the climax start of each of the plurality of contents and outputting a detection signal;
An informing means for informing the presence of the content for which the start of the upsurge is detected when the content for which the start of the upsurge is detected is not displayed;
A content display system comprising: A program executed on a computer that realizes a content discovery support function for detecting the start of content swell,
Post message reception function for receiving post messages from the message sharing server;
A post count calculation function for calculating the post count corresponding to the content from the received post message;
Based on the temporal change in the number of posts, the climax detection function that detects the climax start of the content and outputs a detection signal;
A program characterized by comprising: