THEFT PREVENTION DEVICE FOR AUTOMOBILE AND ITS OPERATING METHOD

PROBLEM TO BE SOLVED: To provide improved protection to the fabrication of a response signal by evaluating the response signal, comparing code information included in the response signal with expected target code information, and controlling a safety device dependent on the comparison results. SOLUT...

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Bibliographic Details
Main Author STIPPLER MICHAEL
Format Patent
LanguageEnglish
Published 22.02.2000
Edition7
Subjects
ACCESSORIES THEREFOR
ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE
CALCULATING
CHECKING-DEVICES
COMPUTING
COUNTING
FIXED CONSTRUCTIONS
GENERATING RANDOM NUMBERS
HANDCUFFS
HANDLING RECORD CARRIERS
KEYS
LOCKS
PERFORMING OPERATIONS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
REGISTERING OR INDICATING THE WORKING OF MACHINES
SAFES
SIGNALLING
TIME OR ATTENDANCE REGISTERS
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
VOTING OR LOTTERY APPARATUS
WINDOW OR DOOR FITTINGS
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Summary:PROBLEM TO BE SOLVED: To provide improved protection to the fabrication of a response signal by evaluating the response signal, comparing code information included in the response signal with expected target code information, and controlling a safety device dependent on the comparison results. SOLUTION: Question signals are transmitted via antennas 3 in operating trigger switches 4, 12. When the question signals are received by a portable transponder 5, it replies response signals. The response signals are received by one of the antennas 3 or other antennas in an automobile. A transmitting/ receiving unit 2 is connected to a safety device, for example a door lock 6 or a controller related to the operation, for example an engine controller 7 in the automobile 1 via a control data line. When the transponder 5 judges right based on the response signals (success in recognition), the door lock 6 is locked or unlocked according to the control information included in the response signals.
Bibliography:Application Number: JP19990229910