Abstract: An LED lighting device comprising a plurality of light-emitting diodes (LED) and a power supply that receives alternating-current (AC) power from an input node and provides rectified direct-current (DC) power to the LEDs. The LED lighting device further comprises a capacitive power-factor compensation means and a bridge rectifier, wherein the capacitive power-factor compensation means is electrically downstream from the input node and electrically upstream from the bridge rectifier, and wherein the bridge rectifier is electrically downstream from the capacitive power-factor compensator means and electrically upstream from the LEDs; and a heat sink that contains said power supply, wherein said heat sink comprises a plurality of carriers, on which the LEDs are mounted. The LED lighting device does not include an electronic module that performs digital computation of software.

Abstract: A high-speed two-way optical data link has both light-emitting and light-sensing units mounted adjacent one another in a single housing together with a timing and control unit providing all signals necessary for simultaneous transmission and reception of dam. Synchronization to a clock signal is achieved by use of edge detectors which reset the counters to zero in the timing and control unit whenever a transition in data pulses is sensed. A pair of computers are linked using a program called "Crosstalk" which performs full parity checking of all data received by an associated computer. The data link permits the computers to be "live handshaking" and asynchronous at all times. Another embodiment comprises a strip array which eliminates the optical bulkiness of a parabolic reflector. The strip array also provides a better collection of infrared light since the photodetectors are spread over a larger area than previously allowed with a parabolic reflector.

Abstract: A high-speed two-way optical data link has both light-emitting and light-sensing units mounted adjacent one another in a single housing together with a timing and control unit providing all signals necessary for simultaneous transmissions and reception of data. Synchronization to a clock signal is achieved by use of edge detectors which reset to zero counters in the timing and control unit whenever a transition in data pulses is sensed. A pair of computers are linked using a program called "Crosstalk" which performs full parity checking of all data received by an associated computer. Both computers are live handshaking and asynchronous at all times.