Communications: directive radio wave systems and devices (e.g. – Radar transponder system
Patent
1994-04-06
1995-09-12
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
342 44, 342 50, 342 51, G01S 1375
Patent
active
054500877
ABSTRACT:
A method and system is provided for communicating permanent or semi-permanent information to a transponder (14) from an interrogator (12), preferably operated by a toll agency or other authorized entity. This permanent or semi-permanent information is communicated by means of special instructions valid only during a special mode or maintenance mode which is entered by transmitting a special access code to the transponder (14) from the authorized interrogator (12). The transponder (14) will preferably acknowledge to the authorized interrogator (12) that it is, in fact, operating in the maintenance mode so the interrogator (12) can transmit the special instructions in confidence.
REFERENCES:
patent: 3816709 (1974-06-01), Walton
patent: 3859652 (1975-01-01), Hall et al.
patent: 4114151 (1978-09-01), Denne et al.
patent: 4338587 (1982-07-01), Chiappetti
patent: 4630035 (1986-12-01), Stahl et al.
patent: 4631708 (1986-12-01), Wood
patent: 4688026 (1987-08-01), Scribner et al.
patent: 4870419 (1989-09-01), Baldwin et al.
patent: 4888591 (1989-12-01), Landt et al.
patent: 4912471 (1990-03-01), Tyburski et al.
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5086389 (1992-02-01), Hassett et al.
patent: 5128669 (1992-07-01), Dadds et al.
patent: 5144314 (1992-09-01), Malmberg et al.
patent: 5144553 (1992-09-01), Hassett et al.
patent: 5164732 (1992-11-01), Brocklesby et al.
patent: 5164985 (1992-11-01), Nysen et al.
patent: 5196846 (1993-03-01), Brockelsby et al.
patent: 5202783 (1993-04-01), Holland et al.
patent: 5253162 (1993-10-01), Hassett et al.
patent: 5287112 (1994-02-01), Schuermann
patent: 5374930 (1994-12-01), Schuermann
Frazee Francis B.
Hurta Dwaine S.
Donaldson Richard L.
Kesterson James C.
McCormack Brian C.
Sotomayor John B.
Texas Instruments Incorporated
LandOfFree
Transponder maintenance mode method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transponder maintenance mode method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transponder maintenance mode method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-408137