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US 7,068,986 B2Granted
Method for processing radio waves, and audio system utilizing the method
AssigneeHyundai Motor Company
InventorKyu Sang Ro
Life of this patent
Estimating the term…
Abstract
In multi-path regions of high wave strength, noise in produced sounds of a vehicle audio system is reduced due to controlling of amplification of radio waves received by an on-glass antenna on the basis of wave strength at a running position of a vehicle and its change rate.
Claims8
A method for processing radio waves received at an on-glass antenna of a vehicle, comprising:
- detecting wave strength of the radio wave at a running vehicle;
- determining whether the wave strength is above a predetermined strength;
- calculating change rate of the wave strength when the wave strength is above the predetermined strength;
- and
- controlling amplification of the radio waves received by the on-glass antenna on the basis of the change rate of the wave strength, wherein said controlling of amplification of the radio waves comprises:
- determining whether the change rate of the wave strength is above a reference rate that is obtained as a function of the wave strength;
- cutting off power supply of an on-glass antenna amplifier for amplifying signals of the on-glass antenna when the change rate of the wave strength is above the reference change rate;
- and
- maintaining power supply of the on-glass antenna amplifier when the change rate of the wave strength is not above the reference change rate.
6 more elements
An audio system of a vehicle comprising:
- an on-glass antenna fixed to a window of a vehicle for receiving radio waves;
- an on-glass antenna amplifier for amplifying the signals of the on-glass antenna;
- a controller for detecting wave strength of the radio waves in a running state of the vehicle and for controlling the on-glass antenna amplifier on the basis of the wave strength;
- and
- a tuner for detecting a signal from signals received from the on-glass antenna amplifier,
- wherein the controller executes instructions for:
- detecting wave strength of the radio waves at a running vehicle;
- determining whether the wave strength is above a predetermined strength;
- calculating change rate of the wave strength when the wave strength is above the predetermined strength;
- and
- controlling amplification of the radio wave received by the on-glass antenna on the basis of the change rate of the wave strength, wherein the controlling of amplification of the radio wave comprises:
- determining whether the change rate of the wave strength is above a reference rate that is obtained as a function of the wave strength;
- cutting off power supply of an on-glass antenna amplifier for amplifying signals of the on-glass antenna when the change rate of the wave strength is above the reference change rate;
- and
- maintaining power supply of the on-glass antenna amplifier when the change rate of the wave strength is not above the reference change rate.
12 more elements
Dependencies are inferred from the claim text.