| Patent application number | Description | Published |
|---|
| 20090041167 | Demodulator, Receiver, and Demodulation Method - In an OFDM receiver with a diversity configuration having a plurality of demodulation modules, to perform FFT window position recovery and clock recovery, the gain values calculated by the AGC units ( | 02-12-2009 |
| 20090274038 | Digital broadcasting receiving apparatus with channel estimation function - A delay profile generating circuit | 11-05-2009 |
| 20100013553 | DEMODULATOR, DIVERSITY RECEIVER, AND DEMODULATION METHOD - A diversity receiver includes: a plurality of demodulating means for demodulating inputted OFDM signals, to output their demodulated signals; noise component calculating means provided for each demodulating means, for calculating noise components included in the demodulated signals outputted from corresponding demodulating means; channel profile calculating means provided for each demodulating means, for calculating channel profiles based upon the demodulated signals outputted from corresponding demodulating means; transmission channel decision means for determining transmission channel based upon the channel profiles; reliability information generating means for generating reliability information indicating reliability of the demodulated signals outputted from each demodulating means, based upon the noise components and the results of the determinations by the transmission channel decision means; a weighting factor calculating means for calculating, depending on the reliability information, weighting factors used in combining the demodulated signals outputted from each demodulating means; and a combining means for combining, depending on the weighting factors, the demodulated signals outputted from each demodulating means. | 01-21-2010 |
| 20100091917 | DIGITAL BROADCASTING RECEIVING APPARATUS - A digital broadcasting receiving apparatus has a signal level detecting circuit for performing gain control to maintain a power level of a received signal at a fixed level, for making a decision as to whether an automatic gain control level of the gain control is greater than a prestored threshold or not, and for outputting the decision result; a peak detecting section for detecting a peak of a power level within a band of the received signal, and for outputting the detected peak; an abnormal peak deciding section for making a decision as to whether a peak greater than a prestored threshold is present in peaks output from the peak detecting section or not, and for outputting the decision result; a specified peak deciding section for making a decision within a specified frequency band as to whether a peak exceeding a prestored threshold is present in the peaks output from the peak detecting section or not, and for outputting the decision result; a prescribed in-band power deciding section for making a decision as to whether the sum total of all powers within a prescribed band is greater than a prestored threshold or not, and for outputting the decision result; and makes a decision as to whether a signal being received is a digital broadcasting signal or not according to the decision results output from the signal level detecting circuit, the abnormal peak deciding section, the specified peak deciding section and the prescribed in-band power deciding section. | 04-15-2010 |
| 20100172429 | DIGITAL BROADCASTING RECEIVING APPARATUS - A digital broadcasting receiving apparatus is characterized in that the digital broadcasting receiving apparatus is provided with an antenna combination determination processing unit for selecting at least two antennas from among a plurality of antennas which have directivities in different directions and each of which receives a digital broadcasting wave transmitted from outside the digital broadcasting receiving apparatus, and for providing an instruction for switching among the above-mentioned plurality of antennas on the basis of a state of reception of the digital broadcasting waves received by the selected antennas, and switches for switching among the above-mentioned plurality of antennas according to the instruction from the above-mentioned combination determination processing unit. | 07-08-2010 |
