Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware

Child Classifications

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• H04N 21/4302 +2 CPC CPC only CPC only
• H04N 21/431 Generation of visual interfaces ; Content or additional data rendering since 2011 +2 CPC IPC+CPC Available in IPC and CPC
• H04N 21/432 Content retrieval operation from a local storage medium, e.g. hard-disk since 2011 +1 CPC IPC+CPC Available in IPC and CPC
• H04N 21/433 Content storage operation, e.g. storage operation in response to a pause request, caching operations since 2011 +4 CPC IPC+CPC Available in IPC and CPC
• H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream since 2011 +8 CPC IPC+CPC Available in IPC and CPC
• H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream since 2011 +3 CPC IPC+CPC Available in IPC and CPC
• H04N 21/436 Interfacing a local distribution network, e.g. communicating with another STB inside the home since 2011 +3 CPC IPC+CPC Available in IPC and CPC
• H04N 21/437 Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server since 2011 IPC+CPC Available in IPC and CPC
• H04N 21/438 Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network since 2011 +3 CPC IPC+CPC Available in IPC and CPC
• H04N 21/439 Processing of audio elementary streams since 2011 +4 CPC IPC+CPC Available in IPC and CPC
• H04N 21/44 Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs since 2011 +4 CPC IPC+CPC Available in IPC and CPC
• H04N 21/441 Acquiring end-user identification since 2011 IPC+CPC Available in IPC and CPC
• H04N 21/442 Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk since 2011 +8 CPC IPC+CPC Available in IPC and CPC
• H04N 21/443 OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB since 2011 +7 CPC IPC+CPC Available in IPC and CPC