Patent application number | Description | Published |
20090086107 | RECIEVER SYSTEM FOR MULTIPLE BANDWIDTH TELEVISION CHANNELS - Disclosed is a receiver system, capable of receiving RF signals on television channels of multiple bandwidths. The receiver system includes a tuner, an analog IF filter, an ADC, a mixer module, one or more digital filters, an AGC module and a controller. The tuner converts an RF signal into an IF signal using a mixer frequency. The analog IF filter filters out a fixed band signal from the IF signal. The ADC module converts the fixed band signal into a digital signal, which is filtered by digital filters. The output of the digital filters is converted to a base band signal and the power level of the base band signal is controlled by the AGC module. The controller selects a mixer frequency from a group of mixer frequencies based on a function of power of the output of the AGC module by applying each mixer frequency to the tuner. | 04-02-2009 |
20090097600 | DIVERSITY RECEIVER AND METHOD FOR CONTROLLING POWER THEREOF - The present disclosure provides a diversity receiver. The diversity receiver includes a plurality of tuners, a plurality of demodulators operatively coupled to the plurality of tuners and a controller operatively coupled to the plurality of demodulators and the plurality of tuners. Each tuner is capable of receiving a modulated signal from a path of a plurality of distinct paths. The controller determines information for each path and computes a ratio of signal strength to an additive noise for each path based on determined information. Further, the controller adjusts power of signal in each path based on comparison of computed ratio of signal strength to additive noise with a predetermined threshold. The diversity receiver also includes a MRC circuitry operatively coupled to the plurality of demodulators and configured to combine the signal of each path for obtaining a resultant combined signal having an improved ratio of signal strength to additive noise. | 04-16-2009 |
20100046678 | Techniques to improve digital demodulator performance utilizing automatic gain control target adjustment - An embodiment of the present invention provides an apparatus, comprising a digital demodulator including an automatic gain control (AGC) circuit with a self-adapting target to provide optimum performance under all signal conditions. | 02-25-2010 |
20100150180 | Algorithm for managing data loss in software demodulators - Embodiments of methods for receiving and processing multi-band signals in wideband and narrowband environments are described herein. Other embodiments may be described and claimed. | 06-17-2010 |
20120014372 | ALGORITHM FOR MANAGING DATA LOSS IN SOFTWARE DEMODULATORS - Embodiments of methods for receiving and processing multi-band signals in wideband and narrowband environments are described herein. Other embodiments may be described and claimed. | 01-19-2012 |
20120155577 | CHANNEL ESTIMATION FOR DVB-T2 DEMODULATION USING AN ADAPTIVE PREDICTION TECHNIQUE - According to various embodiments, a method is disclosed that includes receiving an orthogonal frequency-division multiplexing (OFDM) modulated signal at a modulator; filtering the received modulated signal using a plurality of sets of filter coefficients with a linear predictor algorithm; and estimating a channel frequency response based on the filtering. | 06-21-2012 |