| Patent application number | Description | Published |
|---|
| 20080247495 | MULTI-SYSTEM SIGNAL RECEIVING DEVICE AND METHOD THEREOF - A receiving device includes: a first signal processor, for receiving a radio frequency signal, and converting the radio frequency signal to generate a first signal, where the radio frequency signal includes a plurality of frames; a second signal processor, coupled to the first signal processor, for performing a Fourier transform operation on the first signal according to a synchronization signal to generate an output signal; a first filter, coupled to the first signal processor, for filtering the first signal to generate a second signal; and a synchronization detection circuit, coupled to the first filter, for detecting the second signal to generate the synchronization signal. The first signal includes a channel signal and at least a portion of neighboring channel signals from neighboring channels, and the output signal corresponds to the channel signal. | 10-09-2008 |
| 20080253483 | METHOD FOR RECEIVING SIGNAL AND APPARATUS THEREOF - A signal receiving apparatus includes a frequency converting circuit, a computing circuit, and a control circuit. The frequency converting circuit is for converting a RF signal to respectively generate a first converted signal and a second converted signal according to a first converting frequency and a second converting frequency. The computing circuit is for computing signal quality parameters of the first converted signal and the second converted signal. The control circuit is for outputting a control signal according to the signal quality parameters of the first converted signal and the second converted signal, wherein the control signal corresponds to the converting frequency of the frequency converting circuit. | 10-16-2008 |
| 20080256588 | Integrated digital broadcasting receiver system - An audiovisual processing system comprises a signal receiving circuit and a host device. The signal receiving circuit comprises a tuner and a demodulator. The tuner generates a tuned signal based on a radio frequency signal. The demodulator generates a digital signal based on the tuned signal, generates a frequency down-converted signal based on the digital signal, generates an audio processing signal based on the frequency down-converted signal in an audio processing mode, generates a demodulated video signal based on the frequency down-converted signal in a video processing mode, generates an output signal based on the audio processing signal in the audio processing mode, and generates the output signal based on the demodulated video signal in the video processing mode. The host device receives the output signal, and generates a demodulated audio signal based on the output signal in the audio processing mode. | 10-16-2008 |
| 20100310021 | METHOD FOR COMPUTING CORRELATION OF PN SEQUENCE AND CIRCUIT THEREOF - The present invention relates to a method for computing correlation of a PN sequence and a circuit thereof. A plurality of input values of an input sequence is summed up to give a first sum. A PN sequence comprising a plurality of first values and a plurality of second values, which correspond to the plurality of input values, are received. Summing up the plurality of input values corresponding to the plurality of first input values in the PN sequence gives a second sum. According to the first sum and the second sum, a correlation value is given. The present invention uses a simple method for computing correlation of a PN sequence. Hence, the operation efficiency is enhanced and the time to give the correlation of the PN sequence is shortened. | 12-09-2010 |
