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
Method for communicating with data through component carriers in mobile communication system to which carrier aggregation method is applied and apparatus therefor
Automated health data acquisition, processing and communication system
High speed solid-state relay with controller
Testing apparatus, testing method and computer-readable storage medium
Integrated circuit, method for driving the same, and semiconductor device
Automatic registration of enterprise resources in a dynamic module system services registry
Antimicrobial compositions and methods of use
  Randomly Featured Patents
Method of diffusion into semiconductor wafers
Household tile cutting gauge
Adhesive correction composition and method of use
Panel hoisting and positioning device
Automobile charger
Rodent control
Suspension system for in-line skates
Construction prop
Use of osteoprotegerin for the treatment and/or prevention of fibrotic disease
Process for purifying phosphoric acid