Radio receiver for receiving digital radio signals and method for receiving digital radio signals
First Claim
1. A radio receiver for receiving digital radio signals, the radio receiver having a demodulator (3) for demodulating the digital radio signals and for ascertaining digital audio signals, wherein the radio receiver has a fixed-frequency oscillator (12) and a digital asynchronous sampling rate converter (13), the digital asynchronous sampling rate converter (13) compensating for the clock pulse deviation between the transmitted digital audio signals and the fixed-frequency oscillator (12) before the digital audio signals are reproduced.
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Accused Products
Abstract
A radio receiver for receiving digital radio signals and a method for receiving digital radio signals are proposed, which are used for undertaking the conversion of digital audio signals to a preset clock pulse rate or clock pulse regulation. The digital asynchronous sampling rate conversion has an input buffer, a control system, a coefficient memory, an accumulator and an interpolator. The output signals of the sampling rate conversion are either passed on for playback or switched to a multimedia bus. The radio receiver according to the present invention and the method according to the present invention are suitable for also converting digital audio signals from sound carriers to a preset clock pulse rate.
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Citations
12 Claims
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1. A radio receiver for receiving digital radio signals, the radio receiver having a demodulator (3) for demodulating the digital radio signals and for ascertaining digital audio signals,
wherein the radio receiver has a fixed-frequency oscillator (12) and a digital asynchronous sampling rate converter (13), the digital asynchronous sampling rate converter (13) compensating for the clock pulse deviation between the transmitted digital audio signals and the fixed-frequency oscillator (12) before the digital audio signals are reproduced.
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2. A radio receiver for receiving digital radio signals, the radio receiver having a demodulator (3) for demodulating the digital radio signals and for ascertaining digital audio signals,
wherein the radio receiver has a fixed-frequency oscillator (12) and a digital asynchronous sampling rate converter (13), and is connected to a multimedia bus, the digital asynchronous sampling rate converter (13) converting the received digital audio signals directly to the clock pulse rate preset by the multimedia bus, before the digital audio signals are fed to the multimedia bus.
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5. A method for receiving digital radio signals, the radio signals being demodulated;
- digital audio signals being ascertained from the demodulated radio signals;
the digital audio signals being decoded, amplified and reproduced acoustically,wherein the clock pulse deviation between the received digital audio signals and the frequency of a fixed-frequency oscillator (12) is equalized to the received digital audio signals by a digital asynchronous sampling rate conversion, before the digital audio signals are amplified and reproduced acoustically. - View Dependent Claims (7, 8, 9, 10, 11, 12)
- digital audio signals being ascertained from the demodulated radio signals;
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6. A method for receiving digital radio signals, the radio signals being demodulated;
- digital audio signals being ascertained from the demodulated radio signals;
the digital audio signals being decoded, amplified and reproduced acoustically,wherein the received digital audio signals are converted are to a clock pulse rate of a multimedia bus using a digital asynchronous sampling rate conversion, before the digital audio signals are fed to the multimedia bus.
- digital audio signals being ascertained from the demodulated radio signals;
Specification