05019699 is referenced by 281 patents and cites 12 patents.

In a preferred arrangement, a lens system having circular symmetry in the hand-held reader focuses the entire width of area information onto an area photosensor array with a single flash of a ring-type xenon flash tube which surrounds the lens system and is symmetrically disposed relative to the axis of the lens system. In this way, the area information image can be disposed at any angle relative to the photosensor array, and the sensed information as stored in digital form can be rotated to a desired orientation prior to decoding.

Title
Hand-held optical character reader with means for instantaneously reading information from a predetermined area at an optical sensing area
Application Number
7/238701
Publication Number
5019699
Application Date
August 31, 1988
Publication Date
May 28, 1991
Inventor
Steven E Koenck
Cedar Rapids
IA, US
Agent
Neuman Williams Anderson & Olson
Assignee
Norand Corporation
IA, US
IPC
G06K 7/10
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