Browse Prior Art Database

Collection Index for Temporal Data Descriptions

IP.com Disclosure Number: IPCOM000119937D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 44K

Publishing Venue

IBM

Related People

Bonsall, GW: AUTHOR [+5]

Abstract

In a system for representing digitally encoded time-based information, such as encoded audio and video, it is desirable that the information be randomly accessible at specific time intervals to provide the processing application the greatest flexibility. One application for randomly accessing the data is editing the sequence in which the data is processed. This is useful for audio and video engineers for: Removing unwanted information Reordering the information Substituting information from other sources

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Collection Index for Temporal Data Descriptions

      In a system for representing digitally encoded time-based
information, such as encoded audio and video, it is desirable that
the information be randomly accessible at specific time intervals to
provide the processing application the greatest flexibility. One
application for randomly accessing the data is editing the sequence
in which the data is processed. This is useful for audio and video
engineers for:
     Removing unwanted information
     Reordering the information
     Substituting information from other sources

      Typically, the editing process is accomplished by extracting
the desired information from the source(s) in the desired order and
creating a new copy of the result. In digital representations of
audio and video data, this technique is not always practical due to
the large volumes of data associated with the digital representations
of audio and video information.

      The current invention provides a Sequence Index to be
associated with time-based data. The Sequence Index is an array of
fixed-length information. Each array element consists of a source
name, a start time, a duration, and processing flags. As such, the
Sequence index specifies a segment of time-based information from a
specific source, and specific processing controls for that
information. That is, the array element specifies which time-based
data is to be accessed, a time unit offset into that data, a time
uni...