Pulse code modulation encoder for data acquisition

Abstract

A programmable pulse code modulation encoder comprises a programmable controller arranged to receive a digital signal input and a plurality of parallel analog signal inputs. The said programmable controller is arranged to digitize the parallel analog signal inputs and modulate them with the digital signal input. A system clock is included to provide clock signals. A counter circuit is connected to the programmable controller to provide interrupt signals under the control of the system clock. A shift register is connected to the programmable controller to receive modulated parallel digital signals corresponding to the parallel analog signal inputs to the programmable controller. The shift register is also connected to the counter and is arranged to function as a parallel to serial converter to provide a serial data stream output at an output terminal of the shift register.

Dependencies are inferred from the claim text.