Method of describing multiple level digest segment information scheme for multimedia contents and apparatus for generating digest stream from described multiple level digest segment information scheme and method thereof

• US 20050108622A1
• Filed: 12/22/2004
• Published: 05/19/2005
• Est. Priority Date: 01/30/1999
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jun, Sung-Bae
• Granted Patent: US 7,406,655 B2
• Time in Patent Office: Days
• US Class Current: 715/201
• CPC Class Codes: G06F 16/44 Browsing; Visualisation therefor
• CPC Class Codes: G06F 16/489 using time information
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/234381 by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
• CPC Class Codes: H04N 21/26233 involving content or additional data duration or size, e.g. length of a movie, size of an executable file
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/440281 by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783
• CPC Class Codes: H04N 21/4508 Management of client data or end-user data
• CPC Class Codes: H04N 21/4621 Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612
• CPC Class Codes: H04N 21/8453 by locking or enabling a set of features, e.g. optional functionalities in an executable program
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments
• CPC Class Codes: H04N 21/8549 Creating video summaries, e.g. movie trailer retrieval in video databases by using presentations in form of a video summary G06F16/739
• CPC Class Codes: H04N 7/163 by receiver means only
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image

Abstract

The present invention is intended to provide multiple levels of digest streams for multimedia contents with small amount of additional storage using a multiple level digest segment information scheme. In the present invention, a multiple level digest segment information is contained in the content-based data area of the multimedia content by representing a level information of each digest segment by multiple levels in a content-based data area of a multimedia content, describing the digest level of the digest segment and the time range information of the digest segment in the digest segment information scheme, and outputting digest segments whose digest level is less than or equal to requested digest level by decoding, upon receipt of the digest level of the digest segment.

Claims

1. A method of describing summary information for a multimedia content, comprising:

describing summary segment information for each summary segment;

describing summary segment group information using different levels of detail; and

describing a summary information with a set of summary segment group information.

2. The method of claim 1, wherein a first level ‘

0’

is the highest in priority.

3. The method of claim 1, wherein a summary associated with a particular level accumulates more than a summary segment included in summary segment group information corresponding to said level so as to provide a longer and more extensive summary of the multimedia content.

4. The method of claim 3, wherein a summary associated with an n level is constructed based on summary segment information whose level is less than or equal to n.

5. The method of claim 1, wherein the summary segment information further includes time range information, including time ranges of summary segments included in the summary information that do not overlap with one another.

6. The method of claim 2, wherein the summary segments included in the summary information are arranged in a time sequence.