Method for recording information that is transmitted via a radio frequency
First Claim
1. A method for recording information that is transmitted over a radio frequency, in particular traffic information, in a monitoring state, the means required for receiving and evaluating a radio frequency being supplied with power in a clocked fashion, the radio, while the receiving and evaluating means are switched on, being tuned to a preestablished radio frequency, and the received radio frequency being monitored for the presence of an identifier designating information, in the event an information identifier is detected, the receiving, evaluating, and then recording means being supplied with power for the duration of the identifier, and the information being recorded, wherein, in response to switching on the monitoring state, the preestablished radio frequency is determined as the frequency to which a radio frequency refers that transmits no information and that was set before the monitoring state was switched on.
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Accused Products
Abstract
A method for recording information that is transmitted over a radio frequency, especially traffic information, in which, in a monitoring state, the receiving device is supplied with power in a clocked manner. While switched on, the receiving device is tuned to a preestablished radio frequency and the received radio frequency is monitored for the presence of an identifier designating information. In the event an information identifier is detected, the receiver is supplied with power for the duration of the identifier and the information is recorded. In response to switching on the monitoring state, the preestablished radio frequency is determined as the frequency to which a radio frequency refers that transmits no information and that was set before the monitoring state was switched on.
21 Citations
2 Claims
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1. A method for recording information that is transmitted over a radio frequency, in particular traffic information, in a monitoring state, the means required for receiving and evaluating a radio frequency being supplied with power in a clocked fashion, the radio, while the receiving and evaluating means are switched on, being tuned to a preestablished radio frequency, and the received radio frequency being monitored for the presence of an identifier designating information, in the event an information identifier is detected, the receiving, evaluating, and then recording means being supplied with power for the duration of the identifier, and the information being recorded,
wherein, in response to switching on the monitoring state, the preestablished radio frequency is determined as the frequency to which a radio frequency refers that transmits no information and that was set before the monitoring state was switched on.
Specification