The RCA Selectron -- US Patent 2,645,712 Reading Circuit for Storage Tubes
Jan A. Rajchman, Radio Corporation of America
Max H. Mesner, Radio Corporation of America
Milton Rosenberg, Radio Corporation of America
Applied: 01 December, 1949
Granted: 14 July 1953
The '712 patent covers the an electrical readout system for Selectrons.
Reading the miniscule currents of the electrical output of a Selectron in the presence of the large voltage swings
of the gating signals was non-trivial. Time-gating allows the signal from a single element to be detected in the
presence of the capacitively-coupled signals from all the other elements.
This method is not unlike the transmit/receive switches employed in radar systems: Allow the large signals to settle
before looking for the small ones.