Resources Contact Us Home
Method of evaluating a readout signal, and optical disc apparatus

Image Number 15 for United States Patent #8121226.

A method and optical disc apparatus for evaluating a quality of a read signal adapted to the PRML method by evaluating a binary code decoded from the read signal obtained by a head, in which an error bit sequence having one bit edge shift from the binary code is generated, a Euclidian distance is calculated on both a correct bit sequence and the error bit sequence with respect to a predetermined target signal level, assuming that the binary code is the correct bit sequence, a Euclidian distance difference between the Euclidian distance on the correct bit sequence and the Euclidian distance on the error bit sequence is calculated, an average Euclidian distance from the target signal level is calculated, a normalized sequence error is calculated, the binary code is evaluated using the normalized sequence error.

  Recently Added Patents
Methods and apparatus for power amplifier calibration
Voltage generating system and memory device using the same
Utilizing virtually stored media snapshots for rasterizing print jobs
Non-volatile flash-RAM memory with magnetic memory
MOS resistor apparatus and methods
Domestic soda-water preparing device
Terminal for flat test probe
  Randomly Featured Patents
Disposable litter devices
Method of producing plasma fractions free of side-effects using fast-reacting antithrombin
Bell mount for mounting exterior mirror to a vehicle
Electronic component module having electronic component with piezoelectric device
Catheter holder
Tissue electroperforation for enhanced drug delivery
Encapsulated materials
Integrated circuit device with a ROM matrix
Dampened pressure regulating and load cell tappet
Production of fermented whey products containing an emulsifier