Patent
1994-07-07
1997-01-14
Harvey, Jack B.
G06F 1300
Patent
active
055949061
ABSTRACT:
A serial data interface includes a receive data terminal, a received serial data out terminal and an operating power supply terminal. A zero-power receive detector for the serial data interface includes a source for furnishing operating power to the interface. The supply of power from the source is controlled through a microcontroller for switching power to the interface. The microcontroller is coupled between the source and the operating power supply terminal of the interface. A light source portion of an optical isolator is coupled to the receive data terminal, and a light activated switch portion of the optical isolator is coupled to the microcontroller.
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Anderson Joe E.
Holmes, II John S.
Boehringer Mannheim Corporation
Harvey Jack B.
Travis John
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