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

Image Number 12 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
Treatment of influenza
Systems and methods for printing images outside a normal color gamut in image forming devices
Lid for a container
Organic light emitting diode display device and method of fabricating the same
Package for product
Polymer-encapsulated colorant nanoparticles
Vacuum cleaner filter adapter ring
  Randomly Featured Patents
Image coder and image coding method, and image decoder and image decoding method, and quantization control method and inverse quantization control method, and data recording medium
Telephone junction box
Candle jar and lid
Turnable window arrangements
Roof mounted safety anchor
Thermal cut-off device with an activating spring that is held in a prestressed condition by a thermally fusible pellet
Node apparatus, method and storage medium
Plasmon switch
Neural net controller for noise and vibration reduction
Combination fishing rod holder, uitilitarian hook and beverage holder