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

Image Number 19 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
Data communication system, data transmitting apparatus, data transmitting method, and method for determining packet size and redundancy
Display screen with graphical user interface
Sliding-type portable communication device
Chip on film (COF) package having test line for testing electrical function of chip and method for manufacturing same
Systems and methods for analyzing telecommunications invoices for payment
Apparatus for touch screen avionic device
Method and apparatus for content-aware resizing of data chunks for replication
  Randomly Featured Patents
Variable position gas trap
Image forming apparatus for reducing toner scatter
Information recording medium, apparatus and method for recording information, and computer program
Electron beam apparatus
Round server
Process for making foams useful as absorbent members for catamenial pads
Tread portion of an automobile tire
Rack drive
Two-piece low volume spray device
Lift for use with patients