Method and apparatus for adjusting reference oscillator frequency in a mobile...
A method and apparatus for using a conventional oscillator in a cellular telephone transceiver as a source of a reference signal for a GPS receiver. In one embodiment, the method comprises using a...
View ArticleDirect digital synthesizer for reference frequency generation
A direct digital frequency synthesizer having a multi-modulus divider, a numerically controlled oscillator and a programmable delay generator. The multi-modulus divider receives an input clock having...
View ArticleMethod and apparatus for process magnification adjustment
A magnification adjustment method for a document processing system having a fixed frequency clock source providing a fixed frequency output signal to a plurality of raster output scanners (ROSs) and a...
View ArticleMultiple clock signal generation from a common oscillator
A system and method of providing a clock signal to a navigation satellite receiver in a device is disclosed. A clock signal generated by a voltage controlled temperature compensated crystal oscillator...
View ArticleNumerically controlled oscillator and oscillation method for generating...
Numerically controlled oscillators and oscillation methods for generating function values in respective clock cycles by using a recurrence equation are provided. The oscillation circuit generates, in...
View ArticleMethod for building a vibration-resistant navigational satellite signals...
The effects of shock and vibration on a navigation receiver processing satellite signals received from global navigation satellites are reduced by controlling the frequency and the phase of the...
View ArticleData processing unit and signal receiver including the data processing unit
The data processing unit () for a receiver of signals carrying information () includes a clock and data recovery circuit () on the basis of a data signal (DOUT), and a processor circuit () connected...
View ArticleMethod and apparatus for reducing signal edge jitter in an output signal from...
A method for reducing signal edge jitter in an output signal from a numerically controlled oscillator includes processing an input signal with a first accumulator to provide a first accumulator output...
View ArticleSampling rate converter data flow control mechanism
A sampling rate converter that converts an incoming stream of data, clocked at a first frequency, to an output stream of data that can be clocked at a second frequency is described. The sampling rate...
View ArticleDirect digital synthesizer for reference frequency generation
A direct digital frequency synthesizer includes a multi-modulus divider, a numerically controlled oscillator and a programmable delay generator. The divider receives an input clock having an input...
View ArticleClock generator
A clock generator receives first and second clock signals, and input representing a desired frequency ratio. A comparison is made between frequencies of an output clock signal and the first clock...
View ArticleReconfigurable correlator for a navigation system
Systems and methods are provided for a correlator system. The system includes a plurality of numerically controlled oscillators and a multiplier configured to receive an input stream representing a...
View ArticleClock recovery system
In a first embodiment of the present invention, a clock recovery system is provided comprising: a phase comparator; an integrator coupled to the phase comparator; a numerically controlled oscillator...
View ArticleMethod and apparatus for performing clock extraction
A method and apparatus for performing clock extraction are provided. The method includes: performing edge analysis on a Training Sequence Equalization (TSEQ) pattern carried by a set of received...
View ArticleAccelerated carrier acquisition method for a digital communication receiver
A method of accelerated carrier signal acquisition for a digital communication receiver, the method comprising receiving a carrier signal by a receiver comprising a carrier recovery loop (CRL),...
View ArticleSystem and method to calibrate the frequency response of an electronic filter
A system and method provide for calibrating the frequency response of an electronic filter. The system and method include a radio transmitter with both in-phase and quadrature baseband paths. Each...
View ArticleNumerically controlled oscillator and digital phase-locked loop
A digital phase-locked loop is provided. The digital phase-locked loop includes: a phase-locked loop, for generating an output frequency according to a reference frequency; and a...
View ArticleSystems and methods for enhancing gnss numerically controlled oscillators
Systems and methods for enhancing numerically controlled oscillators are provided. In certain embodiments, a numerically controlled oscillator enhancer includes a desired rate interface configured to...
View ArticleLow complexity non-integer adaptive sample rate conversion
Generally described herein are methods and systems for sample rate conversion of non-integer and integer factors. In one or more embodiments an apparatus can include a sample rate converter that can...
View ArticleDigital system and method of estimating non-energy parameters of signal carrier
Navigation satellite receivers have a large number of channels, where phase discriminators and loop filter of a PLL operate in phase with data bits and control of numerically controlled oscillator...
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