Patents by Inventor Neil Anthony Savigear Evans

Neil Anthony Savigear Evans 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).

  • Determining which channels are accessible by a communication device in a push-to-talk communication network
    Patent number: 7885674
    Abstract: A method of and system to determine which channels are accessible by a communication device in a push-to-talk communication network are disclosed. The method may comprise sending an identifying network connectivity message to the communication device across a particular network channel, the identifying network connectivity message including an identification code. The method further comprises querying the communication device for the identification code to determine if the communication device successfully received the identifying network connectivity message, thereby to establish if the particular network channel is accessible by the communication device.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: February 8, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Shmuel Shaffer, Steven L. Christenson, Neil Anthony Savigear Evans
  • DETERMINING WHICH CHANNELS ARE ACCESSIBLE BY A COMMUNICATION DEVICE IN A PUSH-TO-TALK COMMUNICATION NETWORK
    Publication number: 20080051124
    Abstract: A method of and system to determine which channels are accessible by a communication device in a push-to-talk communication network are disclosed. The method may comprise sending an identifying network connectivity message to the communication device across a particular network channel, the identifying network connectivity message including an identification code. The method further comprises querying the communication device for the identification code to determine if the communication device successfully received the identifying network connectivity message, thereby to establish if the particular network channel is accessible by the communication device.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventors: Shmuel Shaffer, Steven L. Christenson, Neil Anthony Savigear Evans