Data processing: measuring – calibrating – or testing – Calibration or correction system – Signal frequency or phase correction
Patent
1993-08-25
1999-08-10
Barlow, John
Data processing: measuring, calibrating, or testing
Calibration or correction system
Signal frequency or phase correction
G01B 5255
Patent
active
059373652
ABSTRACT:
Communication system for vehicle wheel alignment apparatus includes transceivers for each wheel sensor and a plurality of transceivers disposed at a control console or control remote unit. Communication is accomplished with any particular sensor transceiver by switching among the control transceivers as follows: (1) If the sensor transceiver does not respond, switch the transmitter portions of the control transceivers sequentially until the sensor transceiver does respond, and (2) if the signal from the sensor transceiver is garbled, switch the receiver portions of the control transceivers sequentially until the message is ungarbled. The transmitter and receiver portions of the control transceivers are controlled independently, so that for a particular message transmission may use a first control transceiver and reception may use a second control transceiver. The communication between sensor transceivers and the control transceivers is cross-band, with all sensor transceivers using the same transmission frequency and a second, different reception frequency. Each transceiver uses the receiver mixer stage as the final, power amplification stage for the transmitter. Transmission is via an AM modulated FM subcarrier.
REFERENCES:
patent: Re33144 (1990-01-01), Hunter et al.
patent: 3896435 (1975-07-01), Constant
patent: 4147980 (1979-04-01), Rook
patent: 4274738 (1981-06-01), Hollandsworth et al.
patent: 4274739 (1981-06-01), Grubbs et al.
patent: 4275398 (1981-06-01), Parker et al.
patent: 4320531 (1982-03-01), Dimon
patent: 4381548 (1983-04-01), Grossman et al.
patent: 4761749 (1988-08-01), Titsworth et al.
patent: 4879670 (1989-11-01), Colarelli
patent: 5044746 (1991-09-01), Henseli
patent: 5048954 (1991-09-01), Madey et al.
patent: 5093786 (1992-03-01), Derks
patent: 5208646 (1993-05-01), Rogers et al.
Gray et al., Radio Transmitters, McGraw-Hill Book Co., Inc., pp. 158-173, Dec. 1961.
Glasgow, Principles of Radio Engineering, McGraw-Hill Book Co., Inc., pp. 381-384, Dec. 1936.
Friton Gerald E.
Meyer Thomas A.
Barlow John
Hunter Engineering Company
Miller Craig S.
LandOfFree
Communications system for vehicle wheel alignment apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communications system for vehicle wheel alignment apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communications system for vehicle wheel alignment apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1130712