Circuit for transmitting electronic signals on a status of...

Details Circuit for transmitting electronic signals on a status of... Circuit for transmitting electronic signals on a status of...

2007-12-04

2007-12-04

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral monitoring

C710S019000, C710S008000, C710S074000, C711S100000, C711S112000, C439S043000, C439S894000

Reexamination Certificate

active

10900861

ABSTRACT:
A circuit (11) utilizing a serial advanced technology attachment (ATA) interface for transmitting connectivity signals from the serial ATA interface to a controller (10) in order for the controller to determine a status of connectivity of a hard drive disk (HDD) (21) to the serial ATA interface. The circuit includes an input end (A) connecting to a ground end of the serial ATA interface, and electronically connecting to a high voltage source; a positive-negative-positive (PNP) tripolar transistor (Q1), a first negative-positive-negative (NPN) tripolar transistor (Q2), a second NPN tripolar transistor (Q3), and an output end connecting a collector of the second NPN tripolar transistor with the controller for outputting voltage signals to the controller. The controller is a programmable microprocessor for determining whether or not the HDD is connected to the serial ATA interface, based on the voltage signals input to the controller.

REFERENCES:
patent: 6075345 (2000-06-01), Lee
patent: 6735650 (2004-05-01), Rothberg
patent: 6879809 (2005-04-01), Vega et al.
patent: 6983338 (2006-01-01), Hadba et al.

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