The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Aug. 24, 2010
William E. Grose, Plano, TX (US);
Teuta K. Williams, Dallas, TX (US);
Philomena C. Brady, Corinth, TX (US);
Bala Krishnan D. Achie, Richardson, TX (US);
Vikram J. Mani, Plano, TX (US);
William E. Grose, Plano, TX (US);
Teuta K. Williams, Dallas, TX (US);
Philomena C. Brady, Corinth, TX (US);
Bala Krishnan D. Achie, Richardson, TX (US);
Vikram J. Mani, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Anti-lock and intelligent braking systems have become ubiquitous in modern vehicles, which employ wheel speed sensors or WSSs. These WSSs generally uses current-domain signals (transmitted through power wires) to reduce the size of the vehicle's wiring harness, but because a vehicle is an inherently noisy environment, mixed signal circuit or MSC (used to decode these signals for a microcontroller) should be able to filter out or compensate for noise. However, traditional MSCs have been plagued with problems, partly due to errors in time base measurement due to noise (as well as other factors). Here, an MSC is provided that accurately calculates a wheel speed pulse width (which is used for time base measurements) by observing the wheel speed pulse as it passes through several thresholds.