Modulation circuit for a light emission device
AssigneeSumitomo Electric Industries, Ltd.
InventorToshio Okita
Life of this patent
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Abstract
A modulation circuit for controlling a light emission device to produce an intensity-modulated light signal based on an input modulation signal. The modulation circuit includes a level detector and an attenuator. The level detector produces an electrical signal corresponding to an amplitude level of the input modulation signal. The attenuator attenuates the input modulation signal based on the electrical signal, and applies the attenuated input modulation signal to said light emission device.
Claims7
A modulation circuit for controlling a light emission device to produce an intensity-modulated light signal based on an input modulation signal, the modulation circuit comprising;
- level detector means for producing an electrical signal corresponding to an amplitude level of the input modulation signal;
- and
- attenuator means for attenuating the input modulation signal based on the electrical signal, and for applying the attenuated input modulation signal to said light emission device.
Dependencies are inferred from the claim text.