Laser modulating and driving device and image reproducing apparatus using the same
First Claim
Patent Images
1. A laser modulating and driving device comprising:
- a modulation signal generating unit configured to generate a laser modulation signal consisting of a pair of small swing differential signals based on pixel data; and
a driving unit configured to drive a laser according to the laser modulation signal supplied from the modulation signal generating unit.
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Abstract
A laser modulating and driving device comprises a modulation signal generating unit configured to generate a laser modulation signal consisting of a pair of small swing differential signals based on pixel data, and a driving unit configured to drive a laser according to the laser modulation signal supplied from the modulation signal generating unit.
19 Citations
31 Claims
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1. A laser modulating and driving device comprising:
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a modulation signal generating unit configured to generate a laser modulation signal consisting of a pair of small swing differential signals based on pixel data; and
a driving unit configured to drive a laser according to the laser modulation signal supplied from the modulation signal generating unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A laser modulating and driving device comprising:
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a pixel data generating unit configured to produce pixel data and formed in a first block;
a modulation signal generating unit configured to generate a laser modulation signal from the pixel data and formed in the first block together with the pixel data generating unit;
a driving unit configured to drive a laser according to the laser modulation signal supplied from the modulation signal generating unit and formed in a second block spatially separate from the first block; and
a signal transmission line connecting between the first block and the second block and transmitting the laser modulation signal. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. An image reproducing apparatus comprising:
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a photosensitive unit;
a light source using a laser;
a laser modulation signal generating unit formed in a first block and configured to produce a laser modulation signal consisting of a pair of small swing differential signals based on pixel data;
a driving unit formed in a second block spatially separated form the first block and configured to drive the laser according to the laser modulation signal;
a signal transmission line connecting between the first block and the second block for transmitting the laser modulation signal to the driving unit; and
a deflecting optical system for guiding and deflecting a laser beam emitted from the light source onto the photosensitive unit to form a latent image thereon. - View Dependent Claims (31)
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Specification