Resonant scanning mirror driver circuit

Details Resonant scanning mirror driver circuit Resonant scanning mirror driver circuit

2006-08-08

2006-08-08

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

C318S629000, C318S599000

Reexamination Certificate

active

07088070

ABSTRACT:
A resonant scanning mirror driver configured to drive a micro-electro-mechanical system (MEMS) mirror to a desired deflection utilizes a PWM pattern selected from patterns having a preset number of bits. The patterns reflect the first positive quarters of the PWM pattern and the remaining quarters are generated utilizing the symmetry of the sine wave that is generated. Patterns having a harmonic distortion less than a preselected maximum are sorted into amplitude bins and ranked to generate a subset of patterns having a linearly varying deflection amplitude.

REFERENCES:
patent: 4099109 (1978-07-01), Abbondanti
patent: 4806946 (1989-02-01), Ohnishi
patent: 5128692 (1992-07-01), Reisch
patent: 5432536 (1995-07-01), Takada et al.
patent: 5943087 (1999-08-01), Kataoka et al.
patent: 6182235 (2001-01-01), Ma et al.
patent: 6961257 (2005-11-01), Garverick et al.

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