Television systems (details H04N3/00, H04N5/00; methods or arrangements, for coding, decoding, compressing or decompressing digital video signals H04N19/00; selective content distribution H04N21/00)

Child Classifications

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• H04N 7/002 +1 CPC CPC only CPC only
• H04N 7/007 CPC only CPC only
• H04N 7/01 Conversion of standards since 1985 +7 CPC IPC+CPC Available in IPC and CPC
• H04N 7/015 High-definition television systems since 1995 +1 CPC IPC+CPC Available in IPC and CPC
• H04N 7/025 Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame since 1995 +1 CPC IPC+CPC Available in IPC and CPC
• H04N 7/04 Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier IPC+CPC Available in IPC and CPC
• H04N 7/06 Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier +2 CPC IPC+CPC Available in IPC and CPC
• H04N 7/08 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band +2 CPC IPC+CPC Available in IPC and CPC
• H04N 7/10 Adaptations for transmission by electrical cable (H04N7/12 takes precedence) +3 CPC IPC+CPC Available in IPC and CPC
• H04N 7/12 Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal (H04N7/24 takes precedence) +2 CPC IPC+CPC Available in IPC and CPC
• H04N 7/14 Systems for two-way working ( H04N7/173 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
• H04N 7/16 Analogue secrecy systems; Analogue subscription systems +3 CPC IPC+CPC Available in IPC and CPC
• H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast +3 CPC IPC+CPC Available in IPC and CPC
• H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite since 1985 IPC+CPC Available in IPC and CPC
• H04N 7/22 Adaptations for optical transmission since 1985 IPC+CPC Available in IPC and CPC
• H04N 7/24 Systems for the transmission of television signals using pulse code modulation (H04N21/00 takes precedence) since 1995 +2 CPC IPC+CPC Available in IPC and CPC