Resources Contact Us Home
Clock recovery circuit of demodulator

Image Number 15 for United States Patent #5651031.

A clock recovery circuit capable of outputting decision point data without causing any slip of a recovered clock in the case of operation in a continuous mode in a demodulator in which received signals are sampled by a fixed frequency clock to obtain the recovered clock and symbol data are demodulated by using this recovered clock. A shift register stores digital received signals obtained by an A/D conversion of quasi-coherent detection received signals, and a clock phase estimator calculates an estimated phase difference between an output value of a phase generator operated by the fixed frequency clock and a symbol clock of the received signals and outputs timing information and phase information of a decision point for discriminating the data of the received signals. An interpolator inputs the output signal of the clock phase estimator, takes in the digital received signals from the shift register and calculates decision point data by interpolation to output the same. The interpolator operates at the same cycle as the symbol clock on an average.

  Recently Added Patents
Micro-fluidic device
Dihydronaphthyridinyl(organo)methanone analogs as positive allosteric mGluR5 modulators
Particulate filter with hydrogen sulphide block function
Resist composition and method for producing resist pattern
Pressure washer
All-in-one information handling system
Phosphonate compounds
  Randomly Featured Patents
Methods and apparatus for providing multiple communications services with unified parental notification and/or control features
Regeneration of particulate filter
Low power microcellular wireless drop interactive network
Method for making cathode slurry
Method and apparatus for implanting hearing device
Abrasion resistant coatings
Foamed liquid crystal polymer film/sheet having improved flexibility and cell uniformity
Tow bar assembly
Packaging container with surface ornamentation
Plurality of column electrode driving circuits and display device including the same