Methods or arrangements for coding, decoding, compressing or decompressing digital video signals

Introduced: January 2014

IPC and CPC are identically structured here. All 15 subcodes exist in both systems.

7 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2014.

Child Classifications

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H04N 19/10 using adaptive coding since 2014 IPC+CPC Available in IPC and CPC
H04N 19/20 using video object coding since 2014 IPC+CPC Available in IPC and CPC
H04N 19/30 using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence) since 2014 +1 CPC IPC+CPC Available in IPC and CPC
H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream since 2014 IPC+CPC Available in IPC and CPC
H04N 19/42 characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation (H04N19/635 takes precedence) since 2014 +1 CPC IPC+CPC Available in IPC and CPC
H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder since 2014 +1 CPC IPC+CPC Available in IPC and CPC
H04N 19/46 Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence) since 2014 IPC+CPC Available in IPC and CPC
H04N 19/48 using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data (motion estimation in a transform domain H04N19/547; processing of decoded motion vectors H04N19/513) since 2014 IPC+CPC Available in IPC and CPC
H04N 19/50 using predictive coding (H04N19/61 takes precedence) since 2014 IPC+CPC Available in IPC and CPC
H04N 19/60 using transform coding since 2014 +1 CPC IPC+CPC Available in IPC and CPC
H04N 19/65 using error resilience since 2014 IPC+CPC Available in IPC and CPC
H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards since 2014 IPC+CPC Available in IPC and CPC
H04N 19/80 Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation (H04N19/635, H04N19/86 take precedence) since 2014 IPC+CPC Available in IPC and CPC
H04N 19/85 using pre-processing or post-processing specially adapted for video compression since 2014 IPC+CPC Available in IPC and CPC
H04N 19/90 using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals since 2014 +1 CPC IPC+CPC Available in IPC and CPC