Analogue/digital converters ( H03M1/10 take precedence)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Analogue/digital converters

CPC: Analogue/digital converters ( H03M1/10 take precedence)

Full Title

Full titles differ between systems:

IPC:

Analogue/digital conversion; Digital/analogue conversion > Analogue/digital converters

CPC:

Analogue/digital conversion; Digital/analogue conversion (conversion of analogue values to or from differential modulation H03M3/00) > Analogue/digital converters ( H03M1/10 take precedence)

Of 12 combined children, 9 exist in both systems.

3 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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H03M 1/1205 +3 CPC CPC only CPC only
H03M 1/1235 CPC only CPC only
H03M 1/124 +2 CPC CPC only CPC only
H03M 1/14 Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit since 1985 +5 CPC IPC+CPC Available in IPC and CPC
H03M 1/18 Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging since 1985 +3 CPC IPC+CPC Available in IPC and CPC
H03M 1/20 Increasing resolution using an n bit system to obtain n + m bits since 1985 +3 CPC IPC+CPC Available in IPC and CPC
H03M 1/22 pattern-reading type since 1985 IPC+CPC Available in IPC and CPC
H03M 1/34 Analogue value compared with reference values (H03M1/48 takes precedence) since 1985 +1 CPC IPC+CPC Available in IPC and CPC
H03M 1/48 Servo-type converters since 1985 +1 CPC IPC+CPC Available in IPC and CPC
H03M 1/50 with intermediate conversion to time interval (H03M1/64 takes precedence) since 1985 +2 CPC IPC+CPC Available in IPC and CPC
H03M 1/60 with intermediate conversion to frequency of pulses since 1985 IPC+CPC Available in IPC and CPC
H03M 1/64 with intermediate conversion to phase of sinusoidal signals since 1985 +1 CPC IPC+CPC Available in IPC and CPC