Controllable signal conditioning circuit

Details Controllable signal conditioning circuit Controllable signal conditioning circuit

1996-05-21

1998-12-01

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327205, H03K 3037, H03K 5153

Patent

active

058444300

ABSTRACT:
An apparatus and method for controlling a variable threshold signal conditioning circuit to condition a variable amplitude periodic input signal in response to the control signals received. A plurality of transistor circuits, each responsive to a control signal, are disposed in parallel with the positive feedback resistor of a trigger circuit. The transistor circuits are controlled to adjust the upper threshold levels of the trigger circuit in order to reduce the false triggering effects of noise in the input signal. The lower threshold level is held constant at the input signal mid-line voltage while the upper threshold level is varied over a plurality of preprogrammed values. A microprocessor determines the appropriate threshold level for the circuit by comparing the timing signal output of the signal conditioning circuit to preprogrammed values stored in the microprocessor memory.

REFERENCES:
patent: 4072870 (1978-02-01), Davis
patent: 4169232 (1979-09-01), Henrich
patent: 4399414 (1983-08-01), Bird
patent: 4520280 (1985-05-01), Yoshikawa et al.
patent: 4581545 (1986-04-01), Beale et al.
patent: 4859873 (1989-08-01), O'Shaughnessy et al.
patent: 4902970 (1990-02-01), Suquet
patent: 4914387 (1990-04-01), Santos
patent: 4933869 (1990-06-01), Gareis et al.
patent: 4940907 (1990-07-01), Lande
patent: 5015878 (1991-05-01), Lasagna et al.
patent: 5015879 (1991-05-01), Lasagna et al.
patent: 5097147 (1992-03-01), Stuebing et al.
patent: 5107135 (1992-04-01), Hagita
patent: 5155386 (1992-10-01), Abdi
patent: 5274326 (1993-12-01), Bleckmann et al.
patent: 5278462 (1994-01-01), Wilson
patent: 5463333 (1995-10-01), Calder et al.
patent: 5528185 (1996-06-01), Lewicki et al.

Affiliated with

Also associated with

Rating

Controllable signal conditioning circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controllable signal conditioning circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controllable signal conditioning circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398539