Corkum

David L. Corkum, Attleboro, MA US

Patent application number	Description	Published
20120290882	SIGNAL PROCESSING DURING FAULT CONDITIONS - A system is configured to monitor a received signal. In response to detecting a fault condition associated with the received signal, the system sets a fault status indicator to indicate occurrence of the detected fault condition. The system sets a state of the fault status indicator for at least a predetermined amount of time to indicate occurrence of the detected fault condition. Subsequent to setting the fault status indicator for at least the predetermined amount of time to indicate the occurrence of the detected fault condition, the system monitors integrity of the signal again. After the predetermined amount of time, in response to detecting that there is no longer a fault associated with the monitored signal, the system modifies the fault status indicator to indicate absence of the fault condition.	11-15-2012
20140257729	TIME SYNCHRONIZED REDUNDANT SENSORS - A redundant sensor includes at least two sensing elements. The redundant sensor includes methods and apparatus for time-stamping and combining data from the sensing elements. A method of use and additional embodiments are disclosed.	09-11-2014

Patent application number	Description	Published
20130114953	OPTICAL TRANSPORT NETWORK PORT PROTECTION SYSTEMS AND METHODS USING FLEXIBLE SWITCH CRITERIA - The present disclosure provides Optical Transport Network (OTN) port protection systems and methods using flexible switch criteria. Specifically, the OTN port protection systems and methods provide linear protection in OTN such as 1+1 Protection with Automatic Protection Switching (APS) and/or 1+1 Subnetwork Connection Protection (SNCP) Protection. The OTN Port Protection with flexible switch criteria allows a user to provision a protection application on an OTN Port and select a switch criteria, Section Monitoring, Path Monitoring, or Tandem Connection Monitoring, without considering the provisioning state of an Optical channel Data Unit level k (ODUk) entity. The ODUk entity may either be cross-connected in the LO case or terminated in the HO case. The ODUk entity may be provisioned independently, after the port protection has been established.	05-09-2013

Patent application number	Description	Published
20130322867	OPTICAL TRANSPORT NETWORK GENERIC NON-CLIENT SPECIFIC PROTECTION SYSTEMS AND METHODS - Systems and methods for generic non-client specific 1+1 protection are described supporting a uni-directional protection scheme for client interfaces on Optical Transport Network (OTN) networking equipment, regardless of the client protocol and without hardware which can participate in those client protocols. This generic non-client specific 1+1 protection can be implemented in an OTN node, an OTN switching device, or via an OTN method. Faults on client signals are escalated to, and processed at, the ODU path layer instead of the client protocol layer, providing a normalized mechanism for client signal protection.	12-05-2013