Abstract:
An optical disc (100, 200, 300, 400, 615) has a first plate (105), a second plate (115) adhered to the first plate (105), and an optically-activated colorant disposed between the first (105) and second plates (115).
Abstract:
An optical print head (100) for recording on a medium (190) includes a plurality of lasers (110, 120, 305, 310) having laser emissions within a desired wavelength range, an optical fiber (150) adapted to receive combined light from the plurality of lasers at a first end (155) and to emit combined output light at a second end (160), and includes a hybrid optical element (170) optically coupled to the second end (160) of the optical fiber and adapted to focus the combined output light (195) within the desired wavelength range on the medium (190).
Abstract:
There is disclosed a label image editing apparatus for editing a label image on a recording media having a data side on which data is recorded, and a label side on which a label image is plotted to visually confirm recording contents on the data side. The label image editing apparatus comprises: a data analyzing section that analyzes data to be recorded on the recording media and/or data to be reproduced from the recording media; and a layout display section that displays, as a layout of the label image, a layout according to an analyzing result by the data analyzing section.
Abstract:
Systems and methods for calibrating laser write power in a digital media drive are disclosed. The method includes writing to a calibration portion (130) on a digital media labeling layer (110) with energy from a laser (450). The writing includes using at least two different laser power settings within the calibration portion (130). The method also includes measuring a parameter in the calibration portion (130), the parameter being indicative of the reflectivity of the labeling layer (110), and determining a calibrated laser write power setting based on the measured parameter and the at least two different laser write power settings.
Abstract:
An optical disc device and a method are for scanning a medium via a beam of radiation while focusing the beam, in particular for scribing a visible label on a record carrier that has a label side provided with a radiation sensitive layer for creating the visible label. The device has a head for providing the beam and a detector for generating a detector signal (CA) from radiation reflected from the medium. A focus system is provided for generating a focus control signal for focusing the beam of radiation to a spot on the medium. A focus excitation signal (505) is added to the focus control signal and a focus correction signal is generated based on detecting a center of gravity in the detector signal, the weight of the detector signal being determined in dependance of the focus excitation signal.
Abstract:
An optical disc device and a method are for scribing a visible label on a record carrier via a beam of radiation. The record carrier has a label side provided with a radiation sensitive layer for creating the visible label. The device has a head for providing the beam and a front-end unit coupled to a detector in the head for generating detector signals based on radiation reflected from the record carrier. The method includes detecting (65) a shock of the device based on monitor signals from the head, and, if a shock is detected, interrupting the scribing by switching the laser to low power (70), storing the position (71) of the interruption, waiting (72) until the detector signals are stable and resume scribing (73).
Abstract:
In an optical disc drive, adapted for forming a label on the label side 14 of a recordable optical disc 10, a determination of the rotation angle a is provided, so that the marking of the label side 14 can be synchronized upon. The method to determine the rotation angle a is based upon one or two of the signals 17', 18', 19' generated by the Hall-effect elements 17, 18, 19 which are normally present in an optical disc drive and are used to generate the tacho signal 24. Advantageously, the actual relationship between rotation angle a and the amplitude of these signals is recorded in a calibration procedure, so as to allow for a higher precision of the rotation angle a determined. This calibration procedure may be performed in the factory or by the user, and may not require any additional ad-hoc equipment if a synchronization pattern present in an optical disc is used.