Apparatus and methods to control laser duty cycle

Details Apparatus and methods to control laser duty cycle Apparatus and methods to control laser duty cycle

2005-12-13

2005-12-13

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S172000

Reexamination Certificate

active

06975150

ABSTRACT:
Apparatus and methods to control laser duty cycle are disclosed. According to one example, a driver circuit may include a duty cycle adjustment circuit, an output stage configured to receive an input signal having a duty cycle and a replica output stage configured to receive the input signal and to produce an output signal that is coupled to a duty cycle adjustment circuit. In such an arrangement, the duty cycle adjustment circuit is configured to affect the duty cycle of the input signal.

REFERENCES:
patent: 4962323 (1990-10-01), Ta
patent: 5695494 (1997-12-01), Becker
patent: 6417715 (2002-07-01), Hamamoto et al.
patent: 6580305 (2003-06-01), Liu et al.
patent: 2002/0140477 (2002-10-01), Zhou et al.

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