Optical transceiver with multiple communication modes
US4957348A · kind A · utility
28Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Mar 21, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1013
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus that enables an optical transceiver (14) to communicate data as a bar code reader or by way of modulated light. A lens assembly (22) adjusts the focal distance of the optical transceiver (14) to enable it to communicate in these multiple modes. A control circuit (16) and microprocessor (12) are coupled to the optical transceiver (14) and are responsive to the focal distance setting of the lens assembly (22) for selecting the appropriate communication mode. The apparatus is of particular value in low-power, portable environments, such as in calculators or other portable computing devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.