Management of presentation time in a digital media presentation system with variable rate presentation capability

• US 6,791,550 B2
• Filed: 12/01/2001
• Issued: 09/14/2004
• Est. Priority Date: 12/12/2000
• Status: Expired due to Term

• Current Assignee: Virentem Ventures LLC
• Original Assignee: Enounce Incorporated
• Inventors: Goldhor, Richard S., Bianchi, Edward J.
• Primary Examiner(s): Bella, Matthew C.
• Assistant Examiner(s): TRAN, TAM D
• Application Number:
  US10/014,894
• Publication Number:
  US 20020118208A1
• Time in Patent Office: 1,018 Days
• Field of Search: 345/475, 345/730, 711/167, 710/25
• US Class Current: 345/475
• 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 16/489 using time information

Abstract

Method for managing Presentation Time in a digital rendering system for presentation of temporally-ordered data when the digital rendering system includes a Variable Rate Presentation capability. In a particular, one embodiment of the present invention is a method for converting Presentation Time to Data Time, and for reporting Presentation Time when only one time can be returned.

Claims

1. A method for associating time related properties with Temporal Sequence Presentation Data elements in a digital rendering system having a Variable Rate Presentation capability, the method comprising steps of:

receiving a rate of presentation, and updating a Current Presentation Rate parameter;

organizing the Temporal Sequence Presentation Data elements into buffers;

presenting the buffers for presentation rate modification and rendering;

determining a number of unmodified data elements in each buffer and an Unmodified Rendition Period of each data element, and retaining, as a property of each buffer, an Unmodified Cumulative Rendition Period for the buffer;

determining and retaining as a property of the buffer, a Data Time;

presentation rate modifying the data elements in the buffer and storing them in a modified buffer;

determining and retaining, as a property of a modified buffer, a number of modified data elements in the modified buffer and a Modified Rendition Period of each data element in the modified buffer;

determining and retaining, as a property of the modified buffer, a Modified Cumulative Rendition Period for the modified buffer;

determining and retaining, as a property of the modified buffer, a Modified Presentation Time of the modified buffer; and

determining and retaining, as a property of the modified buffer, a Cumulative Modified Data Element Count associated with a first data element in the modified buffer.