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Class Information
Number: 341/8
Name: Coded data generation or conversion > Digital pattern reading type converter > Real and complementary patterns
Description: Subject matter where the digital pattern carrier has two patterns, one of which is the complement of the other.

Patents under this class:

Patent Number Title Of Patent Date Issued
7401001 Position determining Jul. 15, 2008
6677863 Absolute encoder Jan. 13, 2004
6469642 Method, selector switch and selector device for securely sensing a selector switch position Oct. 22, 2002
6407678 Belt media drive for printer with dual belt encoders Jun. 18, 2002
6353399 Robust encoding scheme for a shift motor encoder assembly and a system using the same Mar. 5, 2002
6323786 Absolute-value encoder device Nov. 27, 2001
6300884 Method for decoding a quadrature encoded signal Oct. 9, 2001
6100822 Optical sensing system using multiple detectors at various positions for generating position signals Aug. 8, 2000
6097319 Quadrature encoding device with slope-triggered digitizing circuit Aug. 1, 2000
6031914 Method and apparatus for embedding data, including watermarks, in human perceptible images Feb. 29, 2000
5677686 Absolute position detection apparatus and error compensation methods therefor Oct. 14, 1997
5592881 System for identifying modules in a modular printing apparatus Jan. 14, 1997
5115239 Magnetic absolute position encoder with an undulating track May. 19, 1992
4835382 Optical code reading device May. 30, 1989
4769630 Incremental optical code reader, particularly of the wholly integrated type Sep. 6, 1988

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