Loading patent…
AssigneeThe Regents of the University of California
InventorsBahram Jalali, Keisuke Goda, Kevin Kin-Man Tsia
Estimating the term…
A barcode reading apparatus and method in which the spectrum of a probe light is first Fourier-transformed into space, directed upon a barcode, and then Fourier-transformed converting the spectrally encoded barcode pattern to a time domain waveform. In one implementation, the Fourier transformation from the spectrum domain into a spatial domain is performed by a dispersive element, while the Fourier transformation from the spectrally encoded barcode pattern to a time domain waveform is performed by group-velocity dispersion (GVD). The temporally encoded barcode pattern is detected by a photodetector, digitized by a digitizer, and analyzed by a digital signal processor. The invention is applicable to a number of fields which involve the reading of one- and two-dimensional barcodes, displacement sensing, surface measurements, measurement of width and gap, flow cytometry, reading of optical media, presense or absence detection, and other related fields.
An apparatus for reading barcodes and sensing displacements, comprising:
A method of reading patterns and determining displacements of a target, the method comprising:
Dependencies are inferred from the claim text.