초록 ▼

In a toll gate system in which the toll is automatically and electronically collected through wireless communication between an on-board electronic device and a stationary electronic device installed at the toll gate, illegitimate or fraudulent actions committed in the system are detected by the on-

In a toll gate system in which the toll is automatically and electronically collected through wireless communication between an on-board electronic device and a stationary electronic device installed at the toll gate, illegitimate or fraudulent actions committed in the system are detected by the on-board device. When such actions are detected, a communication function of the on-board device is made inoperative. After disposing the illegitimate actions properly, the communication function of the on-board device is restored so that the on-board device can be used again thereafter. The illegitimate action such as opening the on-board device for changing or reading the data contained therein can be detected by sensing removal of screws fastening a circuit board to a case of the on-boar device.

대표청구항 ▼

[ What is claimed is:] [1.] A communication system for use in an electronic toll collection system in which a toll is electronically collected through wireless communication between an on-board electronic device and a stationary electronic device, the communication system comprising:means for detect

[ What is claimed is:] [1.] A communication system for use in an electronic toll collection system in which a toll is electronically collected through wireless communication between an on-board electronic device and a stationary electronic device, the communication system comprising:means for detecting an illegitimate action committed in the electronic toll collection system, said detecting means being a component of said on-board device;means, electrically connected to the detecting means, for temporarily terminating the wireless communication between the on-board electronic device and the stationary electronic device when the illegitimate action is detected by the detecting means; andmeans, including a programmer separate from the on-board electronic device, for recovering the wireless communication between the on-board electronic device and the stationary electronic device.