Video coding

• US 20050185719A1
• Filed: 04/06/2005
• Published: 08/25/2005
• Est. Priority Date: 07/19/1999
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Oyj (Nokia Corporation)
• Inventors: Hannuksela, Miska
• Granted Patent: US 8,654,863 B2
• Time in Patent Office: Days
• US Class Current: 375/240.270
• CPC Class Codes: H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
• CPC Class Codes: H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder

Abstract

A method of video encoding including receiving a video signal to be coded; coding data representing a frame of said video signal; and repeating part, but not all, of the data. The repeated part including the picture header for the frame. A method of decoding an encoded video signal including receiving coded data representing frames of a video signal; examining the coded data to detect header data and picture data; when an error in the picture header is detected, storing the picture data in a temporary picture data store, detecting a repeat of the header data; and decoding the stored picture data using the repeated header data.

Claims

1. A method of decoding an encoded video signal, the method comprising:

receiving coded data representing frames of a video signal;

examining said coded data to detect header data and picture data;

when an error in the picture header is detected, storing the picture data in a temporary picture data store, detecting a repeat of the header data; and

decoding the stored picture data using the repeated header data.