Driver circuit for driving a light emitting element by superimpo

Details Driver circuit for driving a light emitting element by superimpo Driver circuit for driving a light emitting element by superimpo

1987-08-26

1989-09-05

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455609, 455611, 372 25, 372 33, H04B 900

Patent

active

048646490

ABSTRACT:
A driver circuit for driving a light emitting element with a signal generated by superimposing an analog sub-information signal over the pulse string of a digital main signal. The driver circuit includes an input interception detector for detecting any interception of the digital main signal, and a gain-controlled amplifier for increasing the gain of the analog sub-information signal when the digital signal is intercepted.

REFERENCES:
patent: 4449218 (1984-05-01), Strehl
patent: 4612671 (1986-09-01), Giles
patent: 4625105 (1986-11-01), Hentschel
patent: 4719616 (1988-01-01), Akano

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