Multimedia searching and browsing system based on user profile

• US 20030061239A1
• Filed: 09/25/2002
• Published: 03/27/2003
• Est. Priority Date: 09/26/2001
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yoon, Kyoung Ro
• Application Number:
  US10/253,934
• Publication Number:
  US 20030061239A1
• Time in Patent Office: Days
• US Class Current: 707/104.1
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G06F 16/48 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually

Abstract

There are provided a multimedia searching and browsing system reflecting user preference or user pattern, and a user preference extracting method to provide a user-oriented multimedia service, which comprises the steps of recording the usage history for a consumed multimedia, and extracting the use types of a user for a consumed multimedia and the preference with respect to the use types based on the recorded user history.

Claims

1. A user profile including user preference information on the consumption of multimedia content, which comprises preference items and preference values, and reflects recorded usage history (user history), said usage history comprising:

a user action type information of describing the use types of the multimedia consumption;

a multimedia content identification information of the consumed multimedia content to identify the consumed multimedia content; and

a multimedia object information for searching the consumed multimedia content corresponding to the usage history.

2. The user profile of claim 1, wherein the usage history further comprises a segment locating information of the specific portion of the multimedia content consumed in a given action type.

3. The user profile of claim 1, wherein the information on the consumed multimedia is recorded with different weight values with respect to the use types of the multimedia.

4. The profile of claim 1, wherein the multimedia object information comprises of metadata related to the consumed multimedia content or link to the metadata related to the consumed multimedia content.

5. A multimedia searching and browsing apparatus comprising:

a user profile including the user preference for multimedia searching and browsing, which comprises preference items and preference values, and usage history including a history of actions that consumers of multimedia content have carried out over a period of time;

a profiling agent extracting and updating user preference depending on the multimedia use types and using a different weight value with respect to the use types;

a usage history collecting means for updating and storing the history of actions that consumers of multimedia content have carried out over a period of time; and

a browsing means for performing a searching and browsing for the multimedia, which the user accesses, by using the user preference information recorded in the user profile.

6. A user preference extracting method for providing a user-oriented multimedia service based on user preference for a consumed multimedia, the method comprising the steps of:

a) recording a consumed history for the consumed multimedia; and

b) extracting the use types for the consumed multimedia, and the preference with respect to the use types of the multimedia based on the recorded user history.

7. The user preference extracting method of claim 6, wherein the user history is recorded with respect to the use types for the multimedia, and the history comprises metadata or direct/indirect link to metadata corresponding to preference items or its related information.

8. The user preference extracting method of claim 6, wherein the user history, which is used to extract the preference, is deleted after extracting the preference.

9. The user preference extracting method of claim 6, wherein the extracted user preference is restricted to a value within a predetermined interval.

10. The user preference extracting method of claim 6, wherein the extracting of the user preference is based on the usage count with respect to the metadata corresponding to the preference items.

11. The user preference extracting method of claim 10, wherein a usage count with respect to the metadata is defined to as

12. The user preference extracting method of claim 6, wherein the extracting of the user preference is based on the usage count with respect to the metadata, and the user preference converges into the highest value or the lowest value with respect to the increase of the usage count in the positive (+) direction of the positive preference, or in the negative (−

) direction of the negative preference (nonpreference) respectively.

13. The user preference extracting method of claim 6, wherein the user preference value PVj for a corresponding preference item is represented as below, and the M is the highest preference value allowed;

14. The user preference extracting method of claim 6, wherein the user preference is extracted by using existing user preference values and an adjusted usage count based on newly accumulated history.

15. The user preference extracting method of claim 14, wherein the preference value PVj′

, which is extracted by using the adjusted usage count based on the existing preference value and newly-accumulated history, is represented as below, and the M is the highest preference value allowed;

16. A multimedia searching and browsing method based on user preference, the method comprising the steps of:

a) extracting the multimedia use types information of a user, and the preference information recorded by giving different weight values with respect to the use types of the multimedia;

b) searching and browsing the multimedia based on the extracted preference information;

c) recording the user history according to the multimedia searching and browsing; and

d) updating and storing the preference information based on the recorded user history.

17. The multimedia searching and browsing method of claim 16, wherein the user history is recorded with respect to the use types of a multimedia, and includes the metadata corresponding to preference items or its related information, and thus, the searching and browsing is performed for the multimedia, the use types of the multimedia, or the multimedia segment corresponding to the preference items based on the metadata and its related information.

18. The multimedia searching and browsing method of claim 16, wherein the extracting of the user preference information is based on the usage count with respect to the metadata corresponding to preference items.

19. The multimedia searching and browsing method of claim 16, wherein the user history used to extract the preference based on the user history is deleted after extracting the preference.

20. The multimedia searching and browsing method of claim 16, wherein the extracting of the user preference is based on the usage count with respect to the metadata, and the user preference converges into the highest value or the lowest value with respect to the increase of the usage count in the positive (+) direction of the positive preference, or in the negative (−

) direction of the negative preference (nonpreference) respectively.

21. The multimedia searching and browsing method of claim 20, wherein the usage count with respect to the metadata is defined to as