Speed restrictions required by the signal system are provided by the legacy Pulse code cab signaling system, which has been in service on various railroads since the 1930s.
22.
The on-board cab signal unit processes both the pulse code " signal speed " and the ACSES " civil speed ", then enforces the lower of the two.
23.
The two modulation techniques used were pulse code modulation / frequency modulation ( PCM / FM ) and frequency modulation / frequency modulation ( FM / FM ).
24.
The current is very fast and not suitable for fine control of the resulting store charge, so pulse code modulation is used to accurately control the overall flow.
25.
Pierce wrote on electronics and information theory, and developed jointly the concept of Pulse code modulation ( PCM ) with his Bell Labs colleagues Barney Oliver and Claude Shannon.
26.
Within a few years, multi-channel Queen Elizabeth ( 1936 39 ), the patenting of pulse code modulation ( 1938 ) all contributed to the hey-day of telephony s development.
27.
Some large scale neural network models have been designed that take advantage of the pulse coding found in spiking neural networks, these networks mostly rely on the principles of reservoir computing.
28.
This is done by sampling the incoming signal at a rate of 8 kS / s and coding each sample into an 8-bit word using pulse code modulation ( PCM ) techniques.
29.
The systems on both FEC and CSX work in conjunction with pulse code cab signals, which in the case of CSX was inherited from the Richmond, Fredericksburg and Potomac railroad on its single main line.
30.
KLUB-U in-cab signalling systems are able to decode the track-side ALSN codes ( " Continuous Automatic Train Signallisation " ) which is similar to RS4 Codici ( comparable to Pulse Code Cab Signaling in the US ).