Patents by Inventor Erik Charles Stewart

Erik Charles Stewart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Encryption control in optical networks without data loss
    Patent number: 10511629
    Abstract: Methods and systems for encryption control in optical networks without data loss enable various transitions related to encryption of an ODU data payload. A transition from unencrypted data payload to encrypted data payload is performed without data loss or dropping of OTN frames. A transition from encrypted data payload to unencrypted data payload is performed without data loss or dropping of OTN frames. A rotation of the encryption key to another encryption key is also performed without data loss or dropping of OTN frames.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: December 17, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Muhammad Sakhi Sarwar, Erik Charles Stewart, Junichi Sugiyama, Abirami Sathyamoorthy, Swati Mittal
  • Use of optical transport network overhead data for encryption
    Patent number: 10469459
    Abstract: Methods and systems may use optical transport network overhead data for encryption. In particular, specific overhead encryption bits and other encryption data may be stored in an OTN header and used for signaling between a transmitter and a receiver for encrypted transmission without lost data frames.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: November 5, 2019
    Assignee: Fujitsu Limited
    Inventors: Muhammad Sakhi Sarwar, Erik Charles Stewart, Junichi Sugiyama
  • USE OF OPTICAL TRANSPORT NETWORK OVERHEAD DATA FOR ENCRYPTION
    Publication number: 20180295103
    Abstract: Methods and systems may use optical transport network overhead data for encryption. In particular, specific overhead encryption bits and other encryption data may be stored in an OTN header and used for signaling between a transmitter and a receiver for encrypted transmission without lost data frames.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 11, 2018
    Inventors: Muhammad Sakhi Sarwar, Erik Charles Stewart, Junichi Sugiyama
  • ENCRYPTION CONTROL IN OPTICAL NETWORKS WITHOUT DATA LOSS
    Publication number: 20180294958
    Abstract: Methods and systems for encryption control in optical networks without data loss enable various transitions related to encryption of an ODU data payload. A transition from unencrypted data payload to encrypted data payload is performed without data loss or dropping of OTN frames. A transition from encrypted data payload to unencrypted data payload is performed without data loss or dropping of OTN frames. A rotation of the encryption key to another encryption key is also performed without data loss or dropping of OTN frames.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 11, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Muhammad Sakhi Sarwar, Erik Charles Stewart, Junichi Sugiyama, Abirami Sathyamoorthy, Swati Mittal