Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – In combination with or also constituting light responsive...
Patent
1992-01-24
1993-10-05
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
In combination with or also constituting light responsive...
257 82, 257 84, 257 98, 257432, 385 49, 307311, H01L 2714
Patent
active
052508161
ABSTRACT:
A light emitting unit blinks based on a clock signal from a clock signal supply unit, whereby the clock signal (electric signal) is transformed into a light signal. The light signal is directed toward a plurality of semiconductor chips each of which has an internal circuit and a photodetector. The photodetectors receive the light signal, transforms the light signal back into an electric signal, and supplies the electric signal as a clock signal to the internal circuits. Thus, clock skew caused by the impedance of aluminum wires is eliminated, so that the periods of signal transmission time for supplying the clock signal to the respective semiconductor chips are approximately equal.
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Mintel William
Mitsubishi Denki & Kabushiki Kaisha
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