Film optical code reader having clock and data sensors
US5317139A · kind A · utility
10Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Oct 20, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2206/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical bar code reader includes a pair of clock sensors and a pair of data sensors for respectively reading the data track and clock track of the optical bar code. The data track sensors are offset from the clock track sensors and the data and clock track sensors detect changes at the edges of the bars in the optical code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.