Method and apparatus for driving a scan element using a single c

Details Method and apparatus for driving a scan element using a single c Method and apparatus for driving a scan element using a single c

1997-05-12

1999-12-28

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

23546236, 359213, G02B 2610, G06K 710

Patent

active

060069945

ABSTRACT:
A method and apparatus for generating a scanning light beam for scanning a target using a light beam scanning system. In response to actuation of the scanning system by a user, only a single non-periodic pulse of current is provided to a scan element. The single pulse of current causes the scan element to move a light beam from a stationary equilibrium position to a first position at a first extreme end of a scan line that intersects the target. Immediately after the light beam reaches the first extreme end of said scan line, the scan element moves the light beam from the first extreme end of the scan line to a second extreme end of the scan line without application of external current. Thereafter, immediately after the light beam reaches the second extreme end of the scan line, the scan element brings the light beam back to the stationary equilibrium position without application of external current. Alternatively, the single pulse of current causes the scan element to move the light beam from a stationary equilibrium position at a first extreme end of the scan line to a second extreme end of the scan line, and immediately after the light beam reaches the second extreme end of the scan line, the scan element moves the light beam from the second extreme end of said scan line to the first extreme end of said scan line without application of external current.

REFERENCES:
patent: 5170277 (1992-12-01), Bard et al.
patent: 5506394 (1996-04-01), Plesko
patent: 5610752 (1997-03-01), Hayakawa
patent: 5764398 (1998-06-01), Hayakawa
patent: 5831261 (1998-11-01), Plesko
patent: 5874720 (1999-02-01), Dvorkis et al.

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