DIFF Subgroup
H03M 1/202 Full Title
Analogue/digital conversion; Digital/analogue conversion (conversion of analogue values to or from differential modulation H03M3/00) > Analogue/digital converters ( H03M1/10 take precedence) > Increasing resolution using an n bit system to obtain n + m bits
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.