Signal processing of indicia for media identification
US8033628B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Jul 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/0095
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of identifying a type of recording medium includes moving the recording medium relative to a sensor at a substantially uniform speed; processing a signal from the sensor to provide digitized data of the signal; identifying a plurality of peaks in the digitized data; determining at least one of the heights and widths of each of the plurality of peaks; determining a peak to peak distance between two adjacent peaks of the plurality of peaks; determining the position of a peak corresponding to the reference mark using a combination of parameters related to at least two of the peak heights, the peak widths, and the peak to peak distance; determining a configuration of a peak corresponding to the identification mark by locating a peak that is spaced apart from the position of the peak corresponding to the reference mark; and identifying the type of recording medium using the configuration of the peak corresponding to the identification mark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.