Digital recording or reproducing

Child Classifications

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• G11B 20/10009 +7 CPC CPC only CPC only
• G11B 20/10527 +2 CPC CPC only CPC only
• G11B 20/12 Formatting, e.g. arrangement of data block or words on the record carriers since 1985 +7 CPC IPC+CPC Available in IPC and CPC
• G11B 20/14 using self-clocking codes since 1985 +3 CPC IPC+CPC Available in IPC and CPC
• G11B 20/16 using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks since 1985 IPC+CPC Available in IPC and CPC
• G11B 20/18 Error detection or correction; Testing since 1985 +10 CPC IPC+CPC Available in IPC and CPC
• G11B 2020/10833 2nd only +1 CPC CPC only CPC only
• G11B 2020/10851 2nd only CPC only CPC only
• G11B 2020/10861 2nd only CPC only CPC only
• G11B 2020/1087 2nd only +2 CPC CPC only CPC only
• G11B 2020/10898 2nd only +1 CPC CPC only CPC only
• G11B 2020/10916 2nd only +1 CPC CPC only CPC only
• G11B 2020/10935 2nd only +4 CPC CPC only CPC only