Method and apparatus for optical transceiver testing
US5345230A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/07
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for providing a self-test feature for an apparatus utilizing an optical communication link, such as commercial laundry appliances having a data acquisition system for storing information on appliance usage for subsequent transmission to a portable data unit. A signal having at least one known characteristic is applied to the transmitting portion of an optical transceiver, and at least a portion of the resulting transmitted optical energy is coupled to the optical detector of the receiving section of the same transceiver. The characteristics of the resulting output of the receiver elements of the transceiver corresponding to the coupled signal are compared to the corresponding characteristic of the known input signal. Correspondence of these characteristics will confirm valid operation of the transmitting elements and the receiving elements, and thus verify operation of the optical transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.