| Patent application number | Description | Published |
|---|
| 20090085660 | AGC MODULE AND METHOD FOR CONTROLLING NOISE FIGURE AND INTERMODULATION CHARACTERISTICS THEREIN - An Automatic Gain Control (AGC) module for controlling Noise Figure (NF) and IM characteristics therein is disclosed. The AGC module comprises a plurality of AGC stages. Each AGC stage comprises a differential amplifier circuit, an input signal transistor and a current-steering circuit. Differential amplifier circuits of the plurality of AGC stages receive control signals at their differential inputs and their output is connected to a common load. The input signal transistors of the plurality of AGC stages receive a common input signal and is further coupled to the differential amplifier circuit and the current-steering circuit. The current-steering circuits and the control signals at the differential amplifier circuits control gain of the each AGC stage of the plurality of AGC stage, which is used to control the NF and the IM characteristics. | 04-02-2009 |
| 20100323636 | Apparatus and methods for implementing multi-channel tuners - Embodiments of systems and methods for implementing multi-channel tuners are generally described herein. Other embodiments may be described and claimed. | 12-23-2010 |
| 20100330932 | Apparatus and methods for efficient implementation of tuners - Embodiments of systems and methods for the efficient implementation of tuners are generally described herein. Other embodiments may be described and claimed. | 12-30-2010 |
| 20110019785 | Alignment of channel filters for multiple-tuner apparatuses - Apparatuses, systems, and methods that align channel filters for dual tuners are disclosed. An embodiment may comprise an IC having two tuners. Each tuner may have a low-noise amplifier, a mixer with a local oscillator, and channel filter. To perform a channel filter alignment, a bandwidth controller may cross-couple the local oscillator of each tuner to the input of the mixer of the opposite tuner. The bandwidth controller may adjust the frequencies of the local oscillators to produce different configuration tone frequencies at the outputs of the mixers, which are inputs to the channel filters. The bandwidth controller may then determine an amplitude difference between two separate measurements of a channel filter output and, based on a comparison of the measurements with predicted values, increment or decrement the filter bandwidth for each tuner and store parameters for the channel filters which create the largest signal amplitudes. | 01-27-2011 |
| 20110069744 | METHODS AND SYSTEMS TO COMPENSATE IQ IMBALANCE IN WIDEBAND ZERO-IF TUNERS - Methods and systems to compensate IQ imbalances in a tuner system, including relatively wideband ZIF tuner systems and tuner systems having substantially linear frequency dependent phase imbalance, where a one-tap compensation element may be utilized to compensate frequency dependent phase imbalance. A two tone probe may be applied in controlled loop-back modes, and resultant baseband components may be used to determine a straight line from which to determine compensation. The probe may include a Multi-Media over Coax Alliance (MoCA) Type 2 probe. Compensation parameters may be determined as fixed or non-adaptive compensation parameters in a digital domain and may be applied at baseband. One or more compensation values may be determined in a fixed point circuit. | 03-24-2011 |
| 20110075034 | METHOD AND APPARATUS TO SUPPORT MULTI-CHANNEL RECEPTION - In accordance with various aspects of the disclosure, a method and apparatus for receiving multiple channels from a broadcast source and interfacing to multiple demodulators within a common silicon implementation is disclosed. A receiver apparatus is disclosed that may aggregate multiple channels output by multiple tuners into at least one composite signal. The at least one composite signal may be passed to a single ADC. The channels may then be extracted from the at least one composite signal in the digital domain prior to demodulation in separate demodulators. | 03-31-2011 |
| 20110149171 | Efficient tuning and demodulation techniques - Techniques for the reception and processing of wireless signals are disclosed. For instance, an apparatus may include multiple receiving paths, a content stream generation module, and a distribution module. The multiple receiving paths include a first receiving path that generates a first decoded signal from an input RF signal in accordance with a first tuning setting. The content stream generation module has first and second inputs. Based on decoded signals received at the first and second inputs, the content stream generation module may generate first and second content streams, respectively. In situations where both the first and second content streams correspond to the first tuning setting, the distribution module provides the first decoded signal to both the first and second inputs of the content stream generation module. Also, a control module may remove operational power from any of the plurality of receiving paths that are currently being unused. | 06-23-2011 |
| 20110151818 | CORRECTING QUADRATURE CROSSTALK CONTAMINATION IN RECEIVERS - An apparatus, a method and a system for correcting a phase imbalance are described. Embodiments may measure the phase imbalance inherent in a tuner and use the imbalance measure to correct the output of the tuner. Embodiments may include a tone generator to produce a single frequency tone and a tuner to receive the single frequency tone and output an intermediate frequency. The intermediate frequency may be corrected by a correction loop. Other embodiments are described and claimed. | 06-23-2011 |
