DIFF Subgroup
H04N 19/30 using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)
Introduced: January 2014
Title
Titles differ between systems:
IPC: using hierarchical techniques, e.g. scalability
CPC: using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using hierarchical techniques, e.g. scalability
CPC:
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence)
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2014.
Child Classifications
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- H04N 19/34 Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS] since 2014 IPC+CPC Available in IPC and CPC
- H04N 19/36 Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability since 2014 IPC+CPC Available in IPC and CPC
- H04N 19/37 with arrangements for assigning different transmission priorities to video input data or to video coded data since 2014 IPC+CPC Available in IPC and CPC
- H04N 19/39 involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data since 2014 IPC+CPC Available in IPC and CPC