Multiband short range radio receiver for motor vehicle data
First Claim
1. Short range radio receiver for motor vehicle data, comprising antenna means (1-4) connected to a unit (10-15) for processing a received carrier in a specific band of frequencies which is modulated by a data signal, the unit (10-15) comprising means (11, 23-28) for frequency transposition of the carrier, which are connected to means (13) for demodulating the transposed carrier, which are arranged to supply the demodulated data, the receiver being characterised in that the antenna means (1-4) are arranged to receive a plurality of frequency bands, and that frequency discrimination means (21, 22) are provided, connected to the antenna means (1-4), arranged to determine respective reception levels within the bands in order to compare them with each other and to control the frequency transposing means (11, 23-28) depending on the result of the comparison:
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Accused Products
Abstract
The short range radio receiver for motor vehicle data comprises antenna circuits (1-4) connected to a unit (10-15) for processing a carrier in a plurality of specific frequency bands which is modulated by a data signal, the unit (10-15) comprising frequency-transposing circuits (11, 23-28) connected to demodulation circuits (13) supplying the demodulated data, and frequency discrimination circuits (21, 22) are provided, connected to the antenna circuits (1-4), to determine respective reception levels within the bands in order to compare them with each other and to control the frequency transposing circuits (11, 23-28) depending on the result of the comparison.
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Citations
8 Claims
- 1. Short range radio receiver for motor vehicle data, comprising antenna means (1-4) connected to a unit (10-15) for processing a received carrier in a specific band of frequencies which is modulated by a data signal, the unit (10-15) comprising means (11, 23-28) for frequency transposition of the carrier, which are connected to means (13) for demodulating the transposed carrier, which are arranged to supply the demodulated data, the receiver being characterised in that the antenna means (1-4) are arranged to receive a plurality of frequency bands, and that frequency discrimination means (21, 22) are provided, connected to the antenna means (1-4), arranged to determine respective reception levels within the bands in order to compare them with each other and to control the frequency transposing means (11, 23-28) depending on the result of the comparison:
Specification