| US 7,568,628 B2 | ||
| Bar code reading device with global electronic shutter control | ||
| Ynjiun Wang, Cupertino, Calif. (US); and William H. Havens, Syracuse, N.Y. (US) | ||
| Assigned to Hand Held Products, Inc., Slaneateles Falls, N.Y. (US) | ||
| Filed on Mar. 11, 2005, as Appl. No. 11/77,975. | ||
| Prior Publication US 2006/0202036 A1, Sep. 14, 2006 | ||
| Int. Cl. G06K 7/10 (2006.01) | ||
| U.S. Cl. 235—462.45 [235/462.1; 235/462.11; 235/462.25; 235/462.41; 235/462.07] | 35 Claims |
| 1. A complementary metal oxide semiconductor (CMOS) based image reader for collecting image data from a target, the CMOS based
image reader comprising:
a CMOS based image sensor array, the CMOS based image sensor array comprising a plurality of rows of pixels, each of the pixels
of the CMOS based image sensor array being an active pixel comprising a pixel amplifier, a photosensitive region and an opaque
shielded data storage region;
a hand held housing encapsulating said image sensor array;
a timing module in electrical communication with the CMOS based image sensor array, the timing module configured to simultaneously
expose a full frame of pixels of the CMOS based image sensor array during an exposure period;
an illumination module configured to illuminate the target during an illumination period, the illumination module in electrical
communication with the timing module;
a control module in electrical communication with the timing module and the illumination module, the control module configured
to cause at least a portion of the exposure period to occur during the illumination period;
wherein said CMOS based image sensor array is capable of being controlled so that exposure of pixels of a plurality of different
rows of said CMOS based image sensor array is initiated simultaneously, and wherein said illumination period is less than
a frame time of said CMOS based image reader; and
a bar code processing module capable of identifying representations of bar code symbols in collected image data.
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