Patents Assigned to FRESCO MICROCHIP INC.
  • Publication number: 20130223572
    Abstract: As a digitized representation of an intermediate frequency television signal moves through a demodulator it undergoes a number of processes, including conversion from an analog signal to a digitized data, digital signal processing of the digitized data, and the like. The rate at which the digitized data moves through the digital signal processor of the demodulator for processing is referred to as the data rate of the DSP. The demodulator can vary the data rate based on a selected television channel, thereby reducing the level of interference at the demodulator resulting from noise.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Applicant: FRESCO MICROCHIP INC.
    Inventors: Gary Cheng, Vyacheslav Shyshkin, Steve Selby
  • Publication number: 20130157604
    Abstract: A radio frequency (RF) receiver, such as a television tuner, includes a harmonic cancellation circuit. The harmonic cancellation circuit includes a primary signal path to generate a first intermediate frequency (IF) signal by mixing an RF signal with a reference signal and a harmonic feedforward signal path to generate a second IF signal representing signal content of the RF signal near an nth-order harmonic of a frequency fLO of the first reference signal, n comprising a positive integer. The harmonic cancellation circuit further includes a summation stage to generate a third IF signal based on a difference between the first IF signal and the second IF signal.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 20, 2013
    Applicant: FRESCO MICROCHIP INC.
    Inventors: Stephen A. Jantzi, Amr M. Fahim
  • Publication number: 20130149983
    Abstract: A receiver, such as a television tuner, includes a radio frequency (RF) filter circuit. The RF filter circuit includes a filter, a first node, and a second node coupled to the filter, and a conversion signal path having an input coupled to the first node and an output coupled to the second node, the conversion signal path having an active mixer coupled between the first node and the second node. The active mixer can include, for example, a first transconductor and a first mixer coupled in series between the first node and the second node. The RF filter circuit further includes a feedback signal path having an input coupled to the second node and an output coupled to the first node, the feedback signal path including a second transconductor and a second mixer coupled in series between the second node and the first node.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 13, 2013
    Applicant: FRESCO MICROCHIP INC.
    Inventors: Amr M. Fahim, Stephen A. Jantzi, Afshin Mellati