Boots – shoes – and leggings
Patent
1995-05-31
1997-07-22
Mai, Tan V.
Boots, shoes, and leggings
G06J 100
Patent
active
056509502
ABSTRACT:
A programmable, electronic filter (10) includes a memory device such as a Read Only Memory ROM (22) for storing specific cut-off frequency adjustment data corresponding to various cut-off frequencies. The ROM (22) receives a ROM address (28) corresponding to a cut-off frequency signal (26). The ROM (22) generates a specific cut-off frequency adjustment value (30) for a digital-to-analog convertor (20) to produce an output reference current (34). A reference voltage (40), an error amplifier (14), a master transconductance element (16), and a capacitor (18) serve as a tuning loop and ultimately produce a control signal (38) in response to the output reference current (34). Control signal (38) serves as an input to slave filter (12) along with the cut-off frequency signal (26). The slave filter (12) may then serve as an electronic filter having the desired frequency-response characteristic. The slave filter (12) may then receive a slave filter input signal (44) and provide a filtered output signal (46) having an accurate frequency-response characteristic at the desired cut-off frequency.
REFERENCES:
patent: 5461583 (1995-10-01), Fensch et al.
Aragon Michael D.
Krenik William R.
Siniscalchi Patrick P.
Brady III W. James
Donaldson Richard L.
Mai Tan V.
Swayze, Jr. W. Daniel
Texas Instruments Incorporated
LandOfFree
Apparatus and method for accurately establishing a cut-off frequ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for accurately establishing a cut-off frequ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for accurately establishing a cut-off frequ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1564242