Patent ID: 11901948
Assignee: CARL ZEISS SMT GMBH
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 1:
2. The drive device of claim 1, wherein the modulation device comprises:
a signal splitter configured to generate: i) an M-bit wide partial signal comprising M more significant bits of the N-bit wide input signal; and ii) an L-bit wide partial signal comprising L less significant bits of the N-bit wide input signal, where L=N—M;
a first modulation unit configured to generate a 1-bit wide pulse density modulation signal on the basis of the L-bit wide partial signal;
a summation unit configured to generate an M-bit wide summation signal on the basis of the M-bit wide partial signal and the 1-bit wide pulse density modulation signal; and
a second modulation unit configured to generate the 1-bit wide pulse width modulation signal on the basis of the M-bit wide summation signal.