Resources Contact Us Home
Medium, apparatus, and method of recording optical-information

Image Number 18 for United States Patent #7768881.

An optical-information recording medium includes a substrate that includes a servo surface having a servo pattern thereon; an information recording layer laminated on the servo surface of the substrate capable of recording information as a hologram produced by interference between an information beam containing the information and a reference beam; an address servo area that is formed as a part of the servo pattern, and that records therein address information and clock information for aligning a beam, emitted from an optical-information recording apparatus for recording information in the information recording layer, to a target position in the information recording layer; and a following up servo area that is formed as a part of the servo pattern, and that is to be irradiated by the beam to make the beam follow a rotation of the optical-information recording medium.

  Recently Added Patents
1,3-diiodohydantoin compound and production method thereof
Color imaging device
Packaging sleeve
Aggregating completion messages in a sideband interface
Methods of measuring cell viability in tissue engineered products
Lubricating oil compositions
Pet grooming brush and vacuum attachment
  Randomly Featured Patents
Multiple position enclosure for electronics device
Unsaturated ester-amides of halogenated alkenes
Hydraulic torque strut with decoupling and related mounting system
Method to provide an operator selection service as well as a communications network and a call server therefore
Advanced light armor
Emulsified fuel composition and surfactant useful therein
Telephone subscriber circuit
Device for feeding flat material
Torque transmitting apparatus
Method and apparatus for providing improved pocketed innerspring constructions