Method and algorithm for stabilizing the output state of an optical transceiver
US9059834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/616
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and algorithm for stabilizing the output state of an optical transceiver. The method includes comparing a signal quality monitor (SQM) register value with a predetermined threshold. If the SQM register value is less than or equal to the predetermined threshold, a microcontroller unit (MCU) reads and determines the rx_lol state bit value of a clock and data recovery (CDR) chip. If the rx_lol state bit value reaches a low logic level value at least 3 times, the MCU converts the state bit values of rx_lol and mod_nr into low logic level values, or else, convert the state bit values of rx_lol and mod_nr into high logic level values. If the SQM register value is greater than the predetermined threshold then the state bit values of rx_lol and mod_nr will be left unchanged. When there is no data input to the CDR chip, the method of the present invention will maintain rx_lol and mod_nr at high or low logic level values to stabilize the output state of the optical transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.