1. Field of the Invention
The present invention relates to a system delivering video picture information, and more particularly, to a delivering apparatus delivering video picture information according to a request from a user, a receiving apparatus receiving video picture information delivered from a server device, and a storing device receiving and storing video picture information.
2. Description of the Related Art
In recent years, a video picture information delivering system delivering video contents according to a request of a user from a server device, which stores video picture information, via a network has started to widespread. Such a system is generally called a VOD (Video on Demand) system.
In the above described video picture delivering system, a terminal device which receives and displays video picture information normally comprises a function for making a request to make special reproduction (skip, fast-forward playback, pause, etc. of moving pictures) in addition to a function for making a request to deliver moving pictures to the server device. In the meantime, the server device reads from the storing device video contents corresponding to the request from the user, and delivers the read contents to the terminal device of the user as shown in
Incidentally, a video picture desired to be securely viewed by a user is often inserted in video picture information delivered by the above described system. For example, a video picture of an advertisement of a sponsor of the video picture information is inserted in the delivered video picture information. However, a user often skips the video picture of the advertisement by using the above described special reproduction function when reproducing the received video picture information. Here, if the video picture of the advertisement is not viewed by the user, it is expected that the sponsor will not offer funds for producing video contents in the current business model. Namely, good-quality programs can possibly decrease.
For this reason, various methods are proposed to avoid such a situation. For example, a configuration having a function for prohibiting the skip of a video picture portion of an advertisement, a configuration for charging an extra fee when the video picture portion of the advertisement is skipped, and the like are proposed.
However, there is a possibility that these methods are not user-friendly, or not accepted by users.
This problem can occur not only in a video picture information delivering system such as a VOD system, etc. but also in a case where video picture information received by a normal TV tuner, etc. is stored onto a storage medium, and the stored video picture information is reproduced.
An object of the present invention is to provide a method for securely making a user view particular information (especially, advertisement information), which is included in delivered video contents, in a system where video picture information is delivered.
A video picture information delivering apparatus according to the present invention delivers moving pictures according to a request from a terminal device. This apparatus comprises: a determining unit for determining whether or not a predetermined particular picture is included in some of moving pictures to be skipped, upon receipt of a request to skip the some of the moving pictures; and a transmitting unit for transmitting associated information corresponding to the particular picture along with the moving pictures after being skipped if the particular picture is included in the some of the moving pictures to be skipped.
If this video picture delivering apparatus is used in the video picture delivering system, and the particular picture is skipped, associated information corresponding to the particular picture is transmitted to the terminal device. Accordingly, even if the particular picture is skipped, the associated information corresponding to the particular picture is displayed on the terminal device. Namely, it is possible to make a user securely view the information associated with the particular picture.
This video picture information delivering apparatus may be configured to further comprise a storing unit for storing the associated information, and a combining unit for combining the moving pictures after being skipped and the associated information stored in the storing unit. In this case, the transmitting unit transmits the pictures combined by the combining unit to the terminal device. With this configuration, the moving pictures after being skipped, in which the associated information is embedded, can be displayed on the terminal device.
Or, this video picture information delivering apparatus may be configured to further comprise a storing unit for storing the above described associated information, wherein the transmitting unit may multiplex the moving pictures after being skipped and the associated information, and transmit the multiplexed pictures to the terminal device. In this case, the moving pictures after being skipped and the associated information are combined and displayed by the terminal device.
A video picture information receiving apparatus according to the present invention is used to receive moving pictures from a server device in a system where the moving pictures are delivered from the server device according to a request from a user. This apparatus comprises: a requesting unit for transmitting a request to skip some of the moving pictures to the server device; an obtaining unit for obtaining associated information corresponding to a predetermined particular picture if the particular picture is included in the some of the moving pictures to be skipped; and a displaying unit for making the display device display the moving pictures after being skipped and the associated information.
With this video picture information receiving apparatus, associated information corresponding to a particular picture is received from the server device, etc. if the particular picture is skipped. Accordingly, the associated information corresponding to the particular picture can be displayed on the display device even if the particular picture is skipped. Namely, it is possible to make a user securely view the information associated with the particular picture.
Preferred embodiments according to the present invention are described hereinafter.
The user terminal 10 comprises a requesting unit 11 transmitting a request from a user to the server device 20, and a reproducing unit 12 reproducing moving picture data received from the server device 20. Here, the request from the user includes “playback”, “pause”, “fast-forward playback”, “skip”, etc. Furthermore, the user terminal 10 comprises a display device 13 displaying the moving pictures delivered from the server device 20.
The server device 20 comprises an accepting unit 21, a storing device 22, a controlling unit 23, and a transmitting unit 24. The accepting unit 22 accepts a user request transmitted from the user terminal 10. The storing device 22 stores moving picture data of video picture information to be delivered to the user terminal 10. The controlling unit 23 reads corresponding moving picture data from the storing device 22 according to the user request accepted by the accepting unit 21. The transmitting unit 24 transmits to the user terminal 10 the moving picture data that the controlling unit 23 reads from the storing device 22.
With the above described configuration, the user transmits a request to the server device 20 by using the user terminal 10, whereby he or she can receive and view desired video contents.
Moving picture data (including audio data) stored in the storing device 22 is not particularly limited. However, the moving picture data is assumed to conform, for example, to the specifications stipulated by MPEG (Moving Picture Experts Group).
Each piece of picture data is configured by a plurality of slices, each of which is configured by a plurality of macro blocks (MBs). Each of the macro blocks (MBs) is configured by a brightness signal (Y), and color difference signals (Cb,Cr). The brightness signal (Y) is configured by four 8×8 blocks, whereas each of the color difference signals (Cb,Cr) is configured by one 8×8 block.
An access to the above described video data is fundamentally made in units of groups of pictures (GOPs) Additionally, moving picture data is compressed with a discrete cosine transform (DCT), quantization, variable encoding, etc. in units of the above described 8×8 blocks.
The above described video data is put into packets in units of pictures of GOPs, whereas the audio data is put into packets in units of AAUs. A plurality of video packets or audio packets are bound, whereby a “pack” is configured as shown in
To each pack, a pack header and a system header are attached. Here, the pack header includes an SCR (System Clock Reference) which represents a reference time when moving picture data is reproduced. In the meantime, the system header includes information which indicates a bit rate, information which indicates the number of video channels/audio channels, and the like.
When video data and audio data, which have the above described configurations, are stored in the storing device 22, a table which manages a correspondence between the SCR of each pack and a storage address is created. When moving picture data is read from the storing device 22, that table is referenced.
Additionally, a time stamp which indicates reproduction timing is added to moving picture data. Specifically, for example, a PTS (Presentation Time Stamp) for managing the time of a reproduction output, and a DTS (Decoding Time Stamp) for managing the time of decoding are added for each frame of the video data.
Specific embodiments of the video picture information delivering system according to the present invention are described below.
In the first embodiment, whether or not an advertisement picture is included in moving pictures to be skipped is examined when some of moving pictures are skipped according to a user request. If the advertisement picture is included in the moving pictures to be skipped, associated information corresponding to the skipped advertisement picture is displayed on a display device 13 when the moving pictures after being skipped are displayed on the display device 13 of the user terminal 10. Here, the associated information is information associated with the advertisement picture which is inserted in the moving pictures delivered to the user terminal 10. The associated information may be character data, still picture data, or moving picture data. Additionally, the associated information is fundamentally configured by character information or picture information, which is obtained by simplifying the contents of the corresponding advertisement picture. For example, associated information corresponding to an advertisement picture of a certain sweet is configured by information which indicates the name of a company making the sweet, information which indicates the name of the sweet, information which indicates the feature or the sale point of the sweet, and the like.
The request from the user includes at least information which identifies the user or the user terminal 10, and information which represents the contents of the request. Here, the server device 20 accepts at least a playback request, a pause request, a fast-forward request, and a skip request. Namely, the user terminal 10 can make the user select at least an arbitrary request of “playback”, “pause”, “fast-forward playback”, and “skip”.
The request from the user is accepted by the accepting unit 21. Then, an accepting unit 21 analyzes the received user request, and notifies a read controlling unit 32 of its result. Here, if the user makes the “playback” request, the read controlling unit 32 reads the moving picture data of the specified video contents from the video contents storing device 31. Then, a transmitting unit 24 transmits the moving picture data to the user terminal 10. As a result, the moving pictures delivered from the server device 20 are displayed on a display device 13 of the user terminal 10. For example, if the video contents shown in
Or, if the user makes the “skip” request while the moving pictures are being displayed on the display device 13, that request is accepted by the accepting unit 21. Then, the accepting unit 21 detects a skip start time and a skip end time, and notifies the read controlling unit 32 and a determining unit 33 of its results. In this case, the read controlling unit 32 reads moving picture data after the skip end time without reading moving picture data from the skip start time until the skip end time, after reading moving picture data up to the skip start time. In the meantime, the determining unit 33 examines whether or not an advertisement picture is included during the time period from the skip start time to the skip end time. Then, if the advertisement picture is included during that time period, the determining unit 33 reads associated information corresponding to the skipped advertisement picture from an associated information storing unit 34, and passes the read information to the transmitting unit 24.
Upon receipt of the associated information from the determining unit 33, the transmitting unit 24 generates a combined picture which includes the moving pictures after being skipped and the associated information, and transmits the combined pictures to the user terminal 10.
When a request to skip the pictures D and E is input in
In the meantime, when a request to skip the picture G is input in
Upon receipt of the associated information g, the transmitting unit 24 combines an original picture and the associated information g at predetermined timing after the skip. In the example shown in
As described above, in the video picture information delivering system according to the first embodiment, if an advertisement picture is skipped by a user, information associated with the advertisement picture is displayed on the user terminal along with the pictures after being skipped. Accordingly, a provider (or a sponsor) of the pictures can make a user securely view information associated with the advertisement picture, even if the advertisement picture is skipped. In the meantime, the user can skip the moving picture at desired timing without paying any extra cost.
Note that the skip request is input by the user, for example, with the use of a skip button comprised by the user terminal 10. If the user desires to skip some of the moving pictures in this case, he or she presses (or clicks) the skip button. Additionally, a “time period during which a moving picture is skipped” is specified, for example, by a time during which the skip button continues to be pressed, or by the number of times that the skip button is repeatedly pressed. Or, the “time period during which a moving picture is skipped” may be directly specified by using a keyboard, etc.
When the skip request is input from the user, the user terminal 10 calculates the “skip start time” and the “skip end time”. Here, the “skip start time” is, for example, a time at which the skip button is pressed by the user. In the meantime, the “skip end time” is a time elapsed from the “skip start time” for the “time period during which a moving picture is skipped”. These times are measured by using the beginning of the moving pictures displayed on the display device 13 as a reference. Or, these times may be obtained, for example, by using the above described SCR, PTS, DTS, etc. Then, the user terminal 10 transmits the “skip start time” and the “skip end time” to the server device 20 as the skip request. As a result, the server device 20 can recognize a time domain during which the moving picture is to be skipped. Note that the “skip start time” and the “skip end time” may be calculated by the server device 20.
In the implementation example shown in
The above described skip request is accepted and analyzed by the accepting unit 21. Then, the accepting unit 21 generates skip time information, and notifies the read controlling unit 34 and the determining unit 33 of the generated skip time information. Here, the skip time information is configured by the “skip start time”, and the “skip end time”.
When the skip time information is provided, the read controlling unit 32 reads moving picture data from the video contents storing device 31 according to the information. Namely, the read controlling unit 32 skips the domain corresponding to “0:20:00 to 0:21:00” when reading the moving picture data from the video contents storing device 31.
In the meantime, the determining unit 33 examines whether or not an advertisement picture is included in the moving pictures skipped by the user by referencing the above described table. In this example, an advertisement picture, which is registered to the second record in the table shown in
The transmitting unit 24 transmits the moving pictures read by the read controlling unit 32 to the user terminal 10, and also transmits the associated information to the user terminal 10 if the associated information is provided from the determining unit 33. Operations of the transmitting unit 24 are described below with reference to
The transmitting unit 24 first decodes the moving picture data after being skipped, which is read by the read controlling unit 32. As a result, respective frames of the moving pictures after being skipped are generated. That is, for example, bitmap data of the respective frames configuring the moving pictures after being skipped is generated. At this time, the transmitting unit 24 decodes only the moving picture data of the time period corresponding to the display time of the associated information provided from the determining unit 33. For example, if the time during which the associated information is to be displayed is 30 seconds, the transmitting unit 24 decodes the moving picture data for 30 seconds.
Then, the transmitting unit 24 reduces the pictures of the respective frames configuring the reproduced moving pictures. Here, a process for reducing a picture can be implemented with a known technique. Then, a combined picture that is configured by a reduced picture and associated information is generated. At this time, the associated information is arranged in a marginal region obtained by reducing an original picture. Hereafter, the transmitting unit 24 encodes the combined picture that is configured by the original picture and the associated information, and transmits the encoded picture data to the user terminal 10.
The arrangement of the original picture and the associated information is not particularly limited. However, for example, a layout is made so that the associated information is arranged at a top end, a bottom end, a right end, or a left end of a frame or in any of its corners. For instance, an example shown in
In the above described implementation examples, the associated information is arranged in the marginal region obtained by reducing the original picture. However, the present invention is not limited to this implementation. Namely, associated information may be displayed, for example, to overwrite an original picture without reducing the original picture.
Additionally, in the example shown in
With this configuration, it is possible to make a user view associated information corresponding to a skipped advertisement picture without executing the series of processes shown in
In the meantime, associated information transmitted to the user terminal 10 when an advertisement picture is skipped is allowed to vary by user. Namely, a plurality of items of associated information are prepared for each advertisement picture, and a suitable item of associated information may be selected according to an attribute of a user (such as the age, the gender, the family structure, etc. of the user), and transmitted to the user terminal 10.
In the above described configuration, the skip request includes a user ID and skip time information. In the example shown in
Accordingly, if the configuration shown in
As described above, in the video picture information delivering system according to the first embodiment, combined pictures, which are obtained by embedding associated information corresponding to a skipped advertisement picture in moving pictures after being skipped, are generated by the server device 20. Then, the combined pictures are delivered to the user terminal 10. Accordingly, the user terminal 10 decodes the received data, whereby moving pictures including the associated information can be reproduced. Namely, the user terminal 10 does not need to be provided with a special function for displaying associated information.
As described above, in the first embodiment, combined pictures configured by original pictures after being skipped and associated information are generated by the server device 20, and the combined pictures are transmitted to the user terminal 20. In the meantime, in the second embodiment, associated information corresponding to a skipped advertisement picture is transmitted to the user terminal 10 separately from original pictures. Then, the original pictures and the associated information are combined by the user terminal 10, and displayed on the display device 13.
A configuration of a server device used in a video picture information delivering system in the second embodiment is fundamentally the same as that of the server device used in the first embodiment. That is, also the server device in the second embodiment comprises the accepting unit 21, the read controlling unit 32, the determining unit 33, and the associated information storing unit 34, which are shown in
The transmitting unit of the server device in the second embodiment comprises a contents transmitting unit 41, an associated information transmitting unit 42, and a synchronizing unit 43 as shown in
Note that the moving picture data and the associated information may be multiplexed with another method. Namely, the moving picture data and the associated information may be multiplexed, for example, with time-division multiplexing.
If an advertisement picture inserted in delivered video contents is skipped as described above, associated information corresponding to the advertisement picture is transmitted from the server device 20 to the user terminal 10. However, in the second embodiment, original pictures and associated information are not combined by the server device 20, and moving picture data and the associated information are multiplexed and transmitted to the user terminal 10. Accordingly, the user terminal 10 must comprise a function for extracting associated information from received data, and for displaying the extracted information on the display device 13.
The request controlling unit 51 analyzes a user input, and creates a user request. Here, the user input means that, for example, a playback button, a pause button, a fast-forward button, a skip button, a key input button, etc. is operated by a user. The request controlling unit 51 transmits the created user request to the server device 20. If an advertisement picture is skipped by the user request at this time, the server device 20 transmits associated information corresponding to the skipped advertisement picture to the user terminal 10.
Note that the data stream of the moving pictures delivered from the server device 20 to the user terminal 10 is assumed to be configured by encoded video data and encoded audio data. Furthermore, time information is added to this data stream of the moving pictures.
The demultiplexing unit 52 extracts moving picture data and associated information from received data. Specifically, if the moving picture data and the associated information are respectively transmitted by using predetermined ports, the demultiplexing unit 52 transmits the received data via a port allocated to picture data to the decoding unit 54, and also transmits the received data via a port allocated to associated information to the associated information receiving unit 55. Or, if the moving picture data and the associated information are multiplexed with time-division multiplexing and transmitted, the demultiplexing unit 52 transmits data, which is extracted from a time slot allocated to picture data, to the decoding unit 54, and also transmits data, which is extracted from a time slot allocated to associated information, to the associated information receiving unit 55. These processes can be implemented with a known technique.
The time information extracting unit 53 extracts time information added to received moving picture data, and transmits the extracted time information to the request controlling unit 51. The decoding unit 54 reproduces moving pictures by decoding received moving picture data. Then, the reproduced moving pictures are transmitted to the display controlling unit 56. In the meantime, the associated information receiving unit 55 receives associated information if the received data includes the associated information.
The display controlling unit 56 creates a picture to be displayed on the display device 13 according to an instruction from the request controlling unit 51. If the associated information receiving unit 55 does not receive associated information from the server device 20, the display controlling unit 56 displays the moving pictures reproduced by the decoding unit 54 on the display device 13. Or, if the associated information receiving unit 55 receives associated information from the server device 20, the display controlling unit 56 combines the moving pictures reproduced by the decoding unit 54 and the associated information according to timing instructed by the request controlling unit 51, and displays the combined pictures on the display device 13.
The picture combining process executed by the display controlling unit 56 is fundamentally the same as that in the server device 20 which is described with reference to
As described above, if an advertisement picture is skipped in the video picture information delivering system in the second embodiment, associated information corresponding to the skipped advertisement picture is transmitted from the server device 20 to the user terminal 10. Then, the associated information is embedded in the moving pictures after being skipped, and the they are displayed by the user terminal 10. Accordingly, there is no need to execute the picture combining process in the server device 20, thereby lightening the load imposed on the server device 20.
As described above, in the first and the second embodiments, associated information corresponding to an advertisement picture is transmitted from the server device 20 to the user terminal 10 when the advertisement picture is skipped. In the meantime, in the third embodiment, associated information corresponding to an advertisement picture is prepared in a user terminal 10. If the advertisement picture is skipped, the associated information held within the user terminal is extracted and displayed on the display device 13.
The associated information storing unit 57 stores associated information corresponding to an advertisement picture included in moving pictures delivered from the server device 20. Here, the associated information is received, for example, collectively from the server device 20 before the delivery of the moving pictures is started. Namely, if a request to deliver desired video contents is made from the user terminal 10 to the server device 20, the server device 20 transmits to the user terminal 10 associated information corresponding to an advertisement picture, which is inserted in the specified video contents, and starts to deliver the moving picture data of the specified video contents thereafter.
The associated information reading unit 58 fundamentally comprises the same function as that of the determining unit 33, which is shown in
Upon receipt of the skip request from the request controlling unit 51, the associated information reading unit 58 references the above described table, and determines whether or not an advertisement picture is skipped by a user. If the advertisement picture is skipped, the associated information reading unit 58 extracts corresponding associated information from the associated information storing unit 57, and passes the extracted information to the display controlling unit 56.
The display controlling unit 56 displays moving pictures reproduced by the decoding unit 54 on the display device 13 in normal times. Additionally, if an advertisement picture is skipped, the display controlling unit 56 generates combined pictures which include the moving pictures reproduced by the decoding unit, and the associated information extracted from the associated information storing unit 57, and displays the combined pictures on the display device 13.
As described above, in the video picture information delivering system in the third embodiment, associated information displayed when an advertisement picture is skipped is prestored in advance in the user terminal 10. Therefore, the associated information is not transmitted while moving picture data is being delivered. Accordingly, the process related to the skip request can be made faster.
As described above, in the first through the third embodiments, associated information corresponding to an advertisement picture is displayed on the display device 13 if the advertisement picture is skipped. In the meantime, in the fourth embodiment, if an advertisement picture is skipped, also the advertisement picture is together displayed when moving pictures after being skipped are displayed.
Specifically, upon receipt of the skip request, the server device 20 determines whether or not an advertisement picture is included in the moving pictures to be skipped. If the advertisement picture is included in the moving pictures to be skipped at this time, that advertisement picture is read from the video contents storing device 31 and held. Then, the moving pictures after being skipped are combined with the advertisement picture, and the combined pictures are transmitted to the user terminal 10. Here, this picture combining process is configured by a process for reducing the moving pictures after being skipped, a process for reducing an advertisement picture, and a process for combining these reduced pictures to be suitably arranged. The moving pictures after being skipped and the advertisement picture are arranged, for example, as the layout shown in
<Apparatus Receiving and Storing Video Picture Information>
As described above, in the video picture information delivering systems according to the first through the fourth embodiments, moving pictures are delivered from the server device 20 to the user terminal 10 according to a request from a user. In contrast, an apparatus recording TV video pictures, etc., which are broadcast from a broadcasting station, is described below.
A CM checking unit 61 detects an advertisement picture from received moving picture data. A function for detecting an advertisement picture by identifying a main part picture and the advertisement picture, which are included in moving picture data, can be implemented with a known technique. An encoding unit 62 encodes received moving picture data with a predetermined encoding method. A time information adding unit 63 adds time information to the moving picture data encoded by the encoding unit 62. Then, the moving picture data is stored in a moving picture data storing unit 64.
A controlling unit 65 detects the start time and the end time of the advertisement picture detected by the CM checking unit 61. The controlling unit 65 creates a table (equivalent to the table provided in the determining unit 33 shown in
A time information adding unit 67 adds time information to associated information. This associated information is stored in an associated information storing unit 68. To the table of the controlling unit 65, a pointer pointing to an address at which associated information is stored is registered.
The moving picture data and the associated information, which are stored as described above, are used, for example, by the user terminal 10 shown in
In this way, with the above described storing device, it is possible to make a user view associated information corresponding to an advertisement picture even if TV video pictures, etc., which are broadcast from a broadcasting station, are recorded, and the advertisement picture is skipped when the recorded video pictures are reproduced.
The above described embodiments refer to the configurations where associated information corresponding to an advertisement picture is displayed when the advertisement picture is skipped. However, the present invention is not limited to the case where an advertisement picture is skipped. Namely, the present invention is applied to a configuration where associated information corresponding to a particular picture is displayed when the predetermined particular picture included in delivered moving pictures is skipped. Here, the “particular information” is, for example, a portion that a distributor or a sponsor of video picture information desires to make a user particularly view. The “associated information” may be any of character information, a still picture, and a moving picture.
Additionally, the above described embodiments refer to the configurations where associated information corresponding to an advertisement picture is displayed when the advertisement picture is skipped. However, the present invention is not limited to the skip process. Namely, the present invention is also applied to a case where an advertisement picture is reproduced with a special reproduction manner at a user terminal. Here, the “special reproduction manner” includes fast-forward playback. A case where a request of “fast-forward playback” is made from a user is described below.
The user terminal 10 comprises a function for accepting a “fast-forward request” from a user. When the fast-forward request is input, the start time and the end time of a picture to be fast-forwarded is notified to the server device 20. The basic configuration of the server device 20 is the same as that shown in
As described above, according to the present invention, if a predetermined particular picture such as an advertisement, etc. is skipped or reproduced with a special reproduction manner, associated information corresponding to the particular picture is displayed. Accordingly, the information associated with the advertisement can be securely conveyed to a user. Additionally, the user can skip or reproduce with a special reproduction manner a moving picture at desired timing even if the particular picture such as an advertisement, etc. is inserted in delivered moving pictures.
This application is a continuation of an International application No. PCT/JP02/02477, which was filed on Mar. 15, 2002.
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Number | Date | Country | |
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Parent | PCT/JP02/02477 | Mar 2002 | US |
Child | 10940847 | US |