Patent · US Active

Method and video system for freeze-frame detection

US9826252B2 · kind B2 · utility

3Cited by

6References

18Claims

0Family size

Assignee

NXP USA, Inc. · US

Inventors

Dirk Wendel · Unterhaching, DE
Joachim Fader · Munich, DE
Stephan Herrmann · Borgo San Lazzaro, DE
Wilhard Von Wendorff · Munich, DE

Key dates

Filing date	Jul 29, 2014
Grant date	Nov 21, 2017
Priority date	—
Expiry date	Apr 19, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/89
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for detecting a freeze-frame condition comprises receiving a sequence of images from at least one digital device; selectively encoding a first subset of the sequence of images using a first coding scheme that causes an adjustment to an image characteristic of the selected images being encoded; selectively encoding a second subset of the sequence of images using a second coding scheme; storing the first encoded subset and second encoded subset; retrieving the stored first encoded subset and second encoded subset; selectively decoding the first subset of the selected images using the first coding scheme and selectively decoding the second subset of the selected images using the second coding scheme to re-create the sequence of images. A freeze-frame condition in the re-created sequence of images is identifiable based on a plurality of decoded images being different with respect to the image characteristic across multiple decoded image frames.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.