Abstract: Methods, computer-readable media, and systems for scheduling the association of metadata with content. In an embodiment, event information is obtained from a virtual calendar, wherein the event information comprises at least one event detail and one or more parameters defining a time period. First metadata is generated based on the event detail, and is stored, in association with the time period, in a memory. Then, subsequently, during the time period, the first metadata may be retrieved from the memory, and associated with one or more content items generated on the device.

Abstract: Methods, computer-readable media, and systems for scheduling the association of metadata with content. In an embodiment, event information is obtained from a virtual calendar, wherein the event information comprises at least one event detail and one or more parameters defining a time period. First metadata is generated based on the event detail, and is stored, in association with the time period, in a memory. Then, subsequently, during the time period, the first metadata may be retrieved from the memory, and associated with one or more content items generated on the device.

Abstract: Apparatus for recording data by means of a beam of radiation on a recording medium which upon exposure to the beam undergoes optically detectable changes in the form of pits, which apparatus includes means for reducing the beam intensity as a result of pit initiation thereby forming more accurate pits.

Abstract: An electromagnetically deflectable device includes a mirror pivotally mounted to a support by means of a silicone based resilient element. An electromagnetic deflection coil is fixed to the mirror underside. The coil lead wires are embedded in the resilient element and pass through the element to the support.

Abstract: A closed loop control system for an optical recording apparatus of the read after write type comprises a comparator for comparing the input data signal with a playback signal derived from the read beam which trails the write beam and is modulated by the data pattern inscribed on the recording medium by the write beam. The error signal generated by the comparator is applied to a controller which varies the modulation of the read beam in dependence on the error signal, for example, by modifying the data signal used to drive the write beam modulator. In this way, the control system compensates for nonuniformities in the recording medium and the like so as to ensure that the pattern inscribed by the write beam accurately represents the data to be stored.

Abstract: An absolute differentiator receives a self-clocking digital input signal, and its output is applied to a series of delay elements. The outputs of the differentiator and the delay elements are coupled to an OR-gate. The output of the OR-gate is applied to a phase-locked loop to produce a recovered clock signal. The delay elements can be variable with a delay controlled by an output signal from the phase-locked loop, to thereby track a varying center frequency of the digital input signal.

Abstract: A device which provides a video playback apparatus that plays a video disc having different video information and special purpose information tracks. A multi-line video information storage circuit, a special purpose information storage circuit and a radial tracking mirror are controlled by a timing circuit in such a manner that the special purpose information track is sampled for a predetermined period and stored video information is displayed such that continuous video information and special purpose information recorded on the video disc is presented contemporaneously to a monitoring means.

Abstract: A record structure for recording with a radiation beam uses a transparent disc or drum, a coaxial backing disc or drum and two coaxial resilient ring-shaped seals to provide an enclosure between the discs or drums. Radiation-sensitive recording material on the side of the disc or drum within the enclosure is thereby protected from ambient dust particles and other contaminations, while the gaseous or solid by-products of the inter-action between the recording material and the radiation beam in the area around which the beam impinges are substantially contained between the disc surfaces and cannot produce deposits on an objective lens used to focus the radiation beam or poison the user.