METHOD FOR OPTIMIZING THE READING BY A USER EQUIPMENT OF MCCH (MBMS POINT-TO-MULTIPOINT CONTROL CHANNEL) INFORMATION

• US 20090097822A1
• Filed: 05/15/2007
• Published: 04/16/2009
• Est. Priority Date: 05/15/2006
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Okumura, Masumi, Kasutani, Eiji, Hirata, Kyoji
• Granted Patent: US 8,290,341 B2
• Time in Patent Office: Days
• US Class Current: 386/262
• CPC Class Codes: G06F 16/745 the internal structure of a single video sequence
• CPC Class Codes: G06F 16/78 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/44218 Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program methods or arrangements for recognising human body or animal bodies or body parts G06V40/10; methods or arrangements for acquiring or recognising human faces, facial parts, facial sketches, facial expressions G06V40/16; methods or arrangements for recognising movements or behaviour G06V40/20; arrangements for identifying users in broadcast systems H04H60/45
• CPC Class Codes: H04N 21/4532 involving end-user characteristics, e.g. viewer profile, preferences monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18
• CPC Class Codes: H04N 21/458 Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations arrangements for replacing or switching information during the broadcast or during the distribution H04H20/10
• CPC Class Codes: H04N 21/4665 involving classification methods, e.g. Decision trees
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

A video playing device includes a classification unit 121 classifying a video or a video section to be played according to a degree of user'"'"'s necessary concentration on a video, a user'"'"'s concentration derivation unit 140 calculating a degree of user'"'"'s concentration on the video, a video selection unit 122 selecting the video or the video section to be played based on a classification result and the degree of user'"'"'s concentration on the video, and a video playing unit 130 playing the video or the video section selected by the video selection unit, and operates so as to preferentially playing videos or video sections which the degree of user'"'"'s concentration necessary to watch the each video or the each video section is lower than the current degree of user'"'"'s concentration on a video.

Claims

1. A video playing device for playing a video, comprising:

a classification unit classifying a video or a video section to be played according to a degree of user'"'"'s necessary concentration on a video;

a user'"'"'s concentration calculation unit calculating a degree of user'"'"'s concentration on a video; and

a video playing unit comparing a current degree of user'"'"'s concentration on a video with the degree of concentration necessary to watch the each video or the each video section to be played according to a classification result of the classification unit, and preferentially playing videos or video sections which the degree of user'"'"'s concentration necessary to watch the each video or the each video section is lower than the current degree of user'"'"'s concentration on a video.

2. The video playing device according to claim 1, further comprising:

a storage unit storing the relation between the video or the video section to be played and the degree of user'"'"'s concentration,

wherein said classification unit classifies the video or the video section to be played while referring to said storage unit.

3. The video playing device according to claim 1, further comprising:

a video storage unit storing the video to be played;

a video metadata storage unit storing metadata of the video, including at least information about the video sections; and

a video selection unit selecting the video or the video section to be played based on the degree of user'"'"'s concentration by the user'"'"' concentration calculation unit and the classification result of the classification unit for the video or the video section to be played;

wherein the classification unit classifies each of the video or each of the video section stored in said video storage unit based on the degree of the user'"'"'s concentration necessary to watch the video or the video section, and

the video playing unit plays the video or the video section selected by said video selection unit.

4. The video playing device according to claim 2, further comprising:

a video storage unit storing the video to be played;

a video metadata storage unit storing metadata of the video, including at least information about the video sections; and

a video selection unit selecting the video or the video section to be played based on the degree of user'"'"'s concentration by the user'"'"' concentration calculation unit and the classification result of the classification unit for the video or the video section to be played;

wherein the classification unit classifies each of the video or each of the video section stored in said video storage unit based on the user'"'"'s concentration ratio necessary to watch the video or the video section, and

the video playing unit plays the video or the video section selected by said video selection unit.

5. The video playing device according to claim 3,

wherein the video selection unit selects the video or the video section which the degree of user'"'"'s concentration necessary to watch the video or the video section is lower than the current degree of user'"'"'s concentration on the video if the degree of the user'"'"'s concentration on the video is lower than a threshold value.

6. The video playing device according to claim 3, further comprising:

a video playing history storage unit storing previously played videos or video sections as history information,

wherein the video selection unit selects the video or the video section to be played based on the degree of user'"'"'s concentration calculated by the user'"'"'s concentration calculation unit, the classification result of the classification unit for the video or the video section to be played, and the history information stored in said video playing history storage unit.

7. The video playing device according to claim 6,

wherein the video selection unit selects a video or video section which a degree of the concentration necessary to watch is lower than the current degree of user'"'"'s concentration other than the previously produced videos or the video sections indicated by the history information stored in the video playing history storage unit.

8. The video playing device according to claim 3, further comprising:

a relational information storage unit storing relational information indicating subordination among each of videos or each of video sections of the videos,

wherein the video selection unit selects the video or the video section which is in subordination to videos or video sections played so far, and the degree of concentration necessary to watch is lower than the current degree of user'"'"'s concentration based on the degree of user'"'"'s concentration calculated by the user'"'"' concentration calculation unit, the classification result of the classification unit for the video or the video section to be played, and the relational information stored in said relational information storage unit.

9. The video playing device according to claim 8,

wherein the video selection unit selects a video section to be played from video sections belonging to same video as a video section being played.

10. The video playing device according to claim 8,

wherein the relational information storage unit stores the relational information including at least information indicating temporal continuity among each of the videos or each of the video sections of the videos or information indicating semantical subordination.

11. The video playing device according to claim 8,

wherein the video selection unit selects the video section necessary to watch at the degree of use'"'"'s concentration lower than the current degree of user'"'"'s concentration and being in no subordination to a video section being played if a degree of user'"'"'s concentration necessary to watch a video section temporally continuous to the video section being played is higher than the current degree of user'"'"'s concentration.

12. The video playing device according to claim 3, further comprising:

an interrupt detection unit detecting a change in the degree of user'"'"'s concentration on the video, and interrupting playing if a degree of user'"'"'s concentration necessary to watch a video or a video section being played is lower than the current degree of user'"'"'s concentration on the video.

13. The video playing device according to claim 12,

wherein the interrupt detection unit detects the change in the degree of user'"'"'s concentration on the video, and, if the degree of the degree of user'"'"'s concentration necessary to watch the video or the video section being played is lower than the current degree of user'"'"'s concentration on the video, interrupts playing after playing up to an end of the video section being played;

and

the playing video selection unit selects a video section to be played based on the degree of user'"'"'s concentration detected at which end of the video section.

14. The video playing device according to claim 12,

further comprising an interrupt point storage unit storing information indicating an interrupt point, the interrupt point being a position at which the playing is interrupted,

wherein the interrupt detection unit stores an interrupt point at the time to said interrupt point storage unit if the replay is interrupted;

and

the video selection unit selects a video section to restart playing a video from said interrupt point if the degree of user'"'"'s concentration is higher than a degree of concentration necessary to watch a video section temporally continuous to the interrupt point after the interrupt detection unit interrupts playing.

15. The video playing device according to claim 12,

wherein the video selection unit selects a video section so as to restart playing a video from an interrupt point after finishing playing all video sections in subordination to the video section currently being played after interrupting replay.

16. The video playing device according to claim 12,

wherein the interrupt detection unit interrupts replay and stores an interrupt point at which replay is interrupted in an interrupt point storage unit if the degree of user'"'"'s concentration on the video is higher than a degree of user'"'"'s concentration necessary to watch a video section temporally continuous to the video section being played;

and

the video selection unit selects the video section being in semantically no subordination to a video section being played among the video sections necessary to watch at the concentration ratio lower than the degree of user'"'"'s concentration on a video detected at which replay is interrupted if replay is interrupted by interrupt detection unit, moreover, selects a video section which so as to restart replay of a video from an interrupt point if the degree of user'"'"'s video concentration on a video is higher than the user'"'"'s concentration ratio necessary to watch a video section temporally continuous to interrupt point when replay of a video section being in semantically no subordination ends.

17. The video playing device according to claim 3,

wherein the classification unit calculates the degree of concentration necessary to watch the video or the video section to be played based on one or more pieces of information out of information indicating a genre, an importance level, a difficulty level, and a coincidence with a user'"'"'s preference, and classifies the video or the video section to be played according to the degree of calculated concentration.

18. The video playing device according to claim 17,

wherein the classification unit uses, as the difficulty level, one or more pieces of information out of a quantity of voices per unit time included in the video or the video section and number of characters presented per unit time.

19. The video playing device according to claim 3, further comprising:

a user information acquisition unit acquiring user information including one or more pieces of information out of information indicating a user'"'"'s ability, a user'"'"'s preference, and a user'"'"'s intention of video watching,

wherein the classification unit changes the degree of concentration necessary to watch the video or the video section based on the user information acquired by said user information acquisition unit.

20. The video playing device according to claim 3,

wherein the user'"'"'s concentration calculation unit calculates the degree of user'"'"'s video concentration on a video by estimating degree of user'"'"'s concentration on the video based on one or more pieces of information out of information indicating a video playing situation, indicating a degree of concentration of a concentration on other operation performed in parallel, and a video watching environment.

21. The video playing device according to claim 20,

wherein the degree of user'"'"'s concentration calculation unit uses, as the video playing situation, one or more pieces of information out of a screen size of a video being played, a screen position, and a volume of a played voice.

22. The video playing device according to claim 20,

wherein the user'"'"'s video concentration calculation unit uses, as the degree of concentration on other operation performed in parallel, one or more pieces of information out of a type of each application being run, a screen size, a screen position, and an information input amount per unit time.

23. The video playing device according to claim 20,

wherein the user'"'"'s concentration calculation unit uses, as the degree of concentration on other operation performed in parallel, number of key strokes per unit time.

24. The video playing device according to claim 20,

wherein the user'"'"'s concentration calculation unit uses, as the video watching environment, one or more pieces of information out of time at which video replay is performed, a position information, and a noise amount at a playing location.

25. The video playing device according to claim 20,

wherein the user'"'"'s concentration calculation unit estimates the degree of user'"'"'s concentration on the video based on user'"'"'s line of sight information.

26. The video playing device according to claim 3, further comprising:

a stop and start control unit controlling a stop and a restart of video playing,

wherein the stop and start control unit stops playing the video until the degree of user'"'"'s concentration on a video become equal to the degree of concentration necessary to play the video if the video or the video section to be played is not present as a result of determination based on predetermined condition.

27. The video playing device according to claim 26, further comprising:

an input unit inputting information indicating an instruction to stop or restart replay according to a user'"'"'s operation,

wherein the stop and start control unit stops playing and reselects a video or a video section if detecting the information indicating a user'"'"'s stop instruction input from said input unit.

28. The video playing device according to claim 27, further comprising:

a selection unit causing a user to select the video or the video section to be played,

wherein the stop and start control unit stops playing and controls said selection unit to reselect the video or the video section if detecting the information indicating the user'"'"'s stop instruction input from said input unit.

29. The video playing device according to claim 27,

wherein the stop and start control unit stops playing and controls the playing video selection unit to reselect the video or the video section if the information indicating the user'"'"'s stop instruction is input via the input unit;

and

the playing video selection unit receives instruction from the stop and start control unit and perform selection from among the videos or the video sections other than the stopped videos or the video sections based on the predetermined condition.

30. The video playing device according to claim 27, further comprising:

a classification result update unit updating the classification result for the video or the video section for which the user'"'"'s stop instruction is transmitted if the information indicating the user'"'"'s stop instruction is input via the input unit.

31. A video playing method for playing a video, comprising:

classifying a video or a video section to be played according to a degree of user'"'"'s necessary concentration on a video;

calculating a degree of user'"'"'s concentration indicating of a degree of user'"'"'s concentration on the video; and

comparing a current degree of user'"'"'s concentration on a video with the degree of concentration necessary to watch the each video or the each video section to be played according to a classification result of the classification unit, and preferentially playing videos or video sections which the degree of user'"'"'s concentration necessary to watch the each video or the each video section is lower than the current degree of user'"'"'s concentration on a video.

32. The video playing method according to claim 31, further comprising:

a storage unit storing the relation between the video or the video section to be played and the degree of user'"'"'s concentration,

wherein said classification unit classifies the video or the video section to be played while referring to said storage unit.

33. The video playing method according to claim 31, further comprising:

storing the video to be played;

storing metadata of the video, including at least information about the video sections;

classifying each of the video or each of the video section stored based on the degree of user'"'"'s concentration necessary to watch the video or the video section;

calculating a degree of user'"'"'s concentration indicating a degree of user'"'"'s concentration on the video;

selecting the video or the video section to be played based on the degree of user'"'"'s concentration and a classification result for the video or the video section to be played; and

playing the selected video or the selected video section.

34. A video playing program for playing a video, causing a computer to execute:

a processing for classifying a video or a video section to be played according to a degree of user'"'"'s necessary concentration on a video;

a processing for calculating a degree of user'"'"'s concentration on a video; and

a processing for comparing a current degree of user'"'"'s concentration on a video with the degree of concentration necessary to watch the each video or the each video section to be played according to a classification result of the classification unit, and preferentially playing videos or video sections which the degree of user'"'"'s concentration necessary to watch the each video or the each video section is lower than the current degree of user'"'"'s concentration on a video.

35. The video playing program according to claim 34, further comprising:

a storage unit storing the relation between the video or the video section to be played and the degree of user'"'"'s concentration,

wherein said classification unit classifies the video or the video section to be played while referring to said storage unit.

36. The video playing program according to claim 34, causing a computer comprising a storage device storing the video to be played and metadata of the video, including at least information about the video sections to execute:

a processing for classifying each of the video or each of the video section to be played based on a degree of user'"'"'s concentration necessary to watch the video or the video section;

a processing for calculating a degree of user'"'"'s concentration on the video;

a processing for selecting the video or the video section to be played based on the calculated degree of user'"'"'s concentration and a classification result for the video or the video section to be played; and

a processing for playing the selected video or the selected video section.