Unlock instant, AI-driven research and patent intelligence for your innovation.

Long term reference frame management with error feedback for compressed video communication

A long-term reference frame and reference frame technology, applied in the field of video communication

Inactive Publication Date: 2010-03-31
CISCO TECH INC
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems arise when such reference picture instructions are correctly received by some but not all destinations (e.g., every decoder at every destination)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Long term reference frame management with error feedback for compressed video communication
  • Long term reference frame management with error feedback for compressed video communication
  • Long term reference frame management with error feedback for compressed video communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Embodiments of the invention include methods, apparatus, and logic encoded on one or more computer-readable tangible media to perform the methods. A method for managing the use of reference frames between an encoder at a source transmitting via a network to a plurality of destination decoders and a plurality of decoders receiving data from the network, wherein the network is error-prone, and wherein The decoder provides feedback to the encoder. This method is used to ensure that both the encoder and decoder use the same long-term reference picture.

[0026] NEWPRED, H.263+ and H.264

[0027] One known method in which the destination decoder provides feedback to the source encoder in order to provide error resistance regarding the use of reference pictures is called NEWPRED. NEWPRED has become Appendix N of the ITU-TH.263 video coding standard. NEWPRED and similar methods define error recovery tools for inter-coded frames, including mechanisms for selecting reference ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An apparatus, software encoded in tangible media, and a method at an encoder. The method includes sending compressed video data including a reference frame message to create a long term reference frame to a plurality of decoders at one or more destination points, receiving feedback from the decoders indicative of whether or not the decoders successfully received the reference frame message, and inthe case that the received feedback is such that at least one of the decoders did not successfully receive the reference frame message or does not have the indicated recent frame, repeating sending areference frame message to create the long term reference frame. Using the method can replace I-frame error recovery with long term reference frames, even in the case where the reference frame management messages are lost to at least one decoder.

Description

[0001] related application [0002] This application claims priority and is a non-provisional patent to U.S. Provisional Patent Application No. 60 / 910,710, filed April 9, 2007, entitled "LONG TERM REFERENCE FRAME MANAGEMENT WITH ERRORFEEDBACK FOR COMPRESSED VIDEO COMMUNICATION," by Buttimer et al. . The content of the provisional patent application US 60 / 910,710 is hereby incorporated by reference. technical field [0003] The present disclosure relates generally to video communications. Background technique [0004] When compressed video is sent from a source to a destination over a network, lost packets can cause visual errors. At the source, the source encoder typically uses temporal predictive coding, also known as inter coding, where the difference between a frame and a reference picture is coded. Such inter-coded frames are sometimes referred to as INTER frames. In the case of packet transfer towards a destination point, if there is an error, eg a lost packet, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N7/12H04N19/895
CPCH04N19/00781H04N7/26228H04N7/367H04N19/00727H04N7/26313H04N19/00939H04N19/00236H04N7/50H04N19/00024H04N7/68H04N7/26015H04N19/00545H04N19/105H04N19/46H04N19/61H04N19/164H04N19/895H04N19/58
Inventor 毛瑞斯·J·布提姆尔J·威廉·穆澈利约瑟夫·T·福瑞尔
Owner CISCO TECH INC
PatSnap Eureka logo

PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.

X (Twitter)LinkedInYouTubeSubstack

© 2026 PatSnap. All rights reserved. 

Terms of Service

 | 

Privacy policy

 | 

Modern Slavery Act Transparency Statement