Two-sided optical disks having recording layers disposed close t

Two-sided, light-readable information recording disc stacks and

Two-stage actuator control device

Two-stage linear drive apparatus for an information storage disk

Two-wavelength laser pick-up head for a DVD

Two-wavelength optical pickup device with step-like...

Ultra high density disk reader/writer comprising two...

Ultra-high density information storage device based on...

Ultra-high density storage device

Ultra-high density storage device with electron beam steering

Ultra-high density storage device with resonant scanning...

Ultra-resolving optical pickup device having an optical detector

Ultra-resolving optical pickup device having an optical detector

Unbalanced disc detection and reading speed control in disc...

Unconstrained removable protective cover for optical disk

Uniformly distributed servo data for optical information storage

Unique tray geometry to allow for vertical loading of...

Unit and disc having a relatively rough surface and method of pr

Unit to remove crosstalk in multi-layered disk, optical...

Unitary phonograph cartridge and head assembly