Abstract: A photonic integrated circuit has a multi-wavelength laser array and an active waveguide coupler receiving outputs of the laser array. The active waveguide coupler facilitates high output power coupling of the outputs of the laser array to a single mode optical fiber.

Abstract: An automated direct memory access system is implemented as an advanced ATA host IC for mother board or adapter applications. The system transfers data from two independent ATA channels using the ATA Ultra-100 protocols. The ADMA implements a command chaining technique to de-couple the host command sequence from channel execution. Software builds a command chain for hardware execution. The ADMA hardware independently reads command chain requests from memory and executes the next task on the list. When the ADMA hardware completes a task, it interrupts the host in order to inform the host that the task is complete, but immediately proceeds to the next task without waiting for interrupt servicing by the host.

Abstract: A power supply apparatus comprises a switching circuit including a primary power train circuit, a main transformer and a secondary power train circuit for receiving and rectifying an input voltage, an output filter for providing an output voltage to a load, and a voltage feedback coupled in series between the output voltage and the input voltage, in which the voltage feedback circuit includes a feedback control circuit for detecting the output voltage and outputting a voltage feedback control signal in response to the output voltage, a control circuit for outputting a first oscillating signal to the primary power train circuit, a magnetic element coupled in series between the feedback control circuit and the control circuit for receiving a second oscillating signal from the control circuit and coupling the second oscillating signal to the secondary power train circuit to drive the secondary power train circuit to accomplish synchronous rectification and coupling the voltage feedback control signal to the cont

Abstract: A telescope system facilitates easy upgrading from friction lock mounting to manual worm drive, and from manual worm drive to motor drive. Vibration isolation provides a steady field of view for enhanced observation and photography. A telescope mount facilitates enhanced below the horizon and zenith viewing. A tripod has detents which hold the legs thereof in a deployed position during handling of the tripod. A cam lock reliably maintains a desired length of telescoping tripod legs.

Abstract: A flexible, high density, low profile lighting system includes a flexible printed circuit board substrate which is adapted to support and electrically interconnect surface mount electronic components. Plurality of surface mount light emitting diodes is mounted on the substrate so as to define a conformably bendable lighting array configured for mounting upon surfaces with compound curvature. Each of the surface mount light emitting diodes has a footprint of 5 mm2, or less, and, when mounted adjacent and in contact with one another defines a light intensity output of from about 2 to about 20 candles per cm2.

Abstract: A light clock measures time by having a light pulse source initiating a light pulse which travels a preset distance in an open or closed loop. A counter is increases incrementally upon detection of the light pulse by a light pulse detector. Each increment is a time interval, which is determined by the preset distance divided by the speed of the light pulse. If the loop is an open loop, another light pulse may be initiated upon detection of the previous light pulse. If the loop is a closed loop, no further light pulse initiation beyond the initial light pulse is required, but, when necessary, a light pulse amplifier is used to amplify the light pulse for the next cycle around the closed loop in the light pulse transmission device.