05446271 is referenced by 121 patents and cites 21 patents.

A method and apparatus for reading encoded symbols such as bar code labels at any orientation to a raster scanning device. A pattern of virtual scan lines is selected over the two-dimensional imaging region according to the specifications of the images to be read. The pattern is generated by defining a family of parallel lines of a certain spacing and rotating the family by a specified angle until the two-dimensional imaging region is covered. Only the data at selected raster locations on the virtual scan lines is stored and processed. One-dimensional signal processing methods are used to detect edges and decode the encoded symbols.

Title
Omnidirectional scanning method and apparatus
Application Number
8/103403
Publication Number
5446271
Application Date
August 6, 1993
Publication Date
August 29, 1995
Inventor
Robert J Actis
Eugene
OR, US
Craig D Cherry
Eugene
OR, US
Agent
Lyon & Lyon
Assignee
Spectra Physics Scanning Systems
OR, US
IPC
G06K 7/10
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