Patents by Inventor Thomas W. Lockhart

Thomas W. Lockhart 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).

  • Methods of detecting decryption errors
    Patent number: 5841873
    Abstract: In a data communications system, including an infrastructure arranged to communicate over a data channel with a plurality of data terminals, a method of detecting data decryption errors in a data packet includes receiving an encrypted data packet (213); decrypting the encrypted data packet to provide a decrypted data packet; and comparing a reference value to a portion of the decrypted data packet to determine when a predetermined relationship is satisfied (221).
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: November 24, 1998
    Assignee: Motorola, Inc.
    Inventors: Thomas W. Lockhart, Farzan Mamaghani, Karl A. Reardon, William H. Kilner, Richard Mosher, Bud Fraser, Nazira Chatur
  • Peripheral card having independent functionally and method used therewith
    Patent number: 5613095
    Abstract: A PCMCIA card having independent functionality and alternatively arranged to operate in conjunction with a host computer, that includes a peripheral apparatus (109) having an integral CPU (125), a power source (129), and a power supply (127) for exhibiting an independent operating state; and an interface function (121) integral with and coupled to said peripheral apparatus (109), said interface function arranged and constructed to couple said peripheral apparatus to the host computer (101) over a PCMCIA compliant interface and initiate a dependent operating state at said peripheral apparatus (109).
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 18, 1997
    Assignee: Motorola, Inc.
    Inventors: Barry Moss, David W. Russo, Thomas W. Lockhart, Ricardo Lim, Denis Beaudoin
  • Methods of terminal registration
    Patent number: 5574728
    Abstract: In a data communication system (100) including infrastructure (101) arranged to communicate with a plurality of terminals (103) over a channel (109), a method of adaptable registration includes determining a registration status (401), and executing a registration contention procedure adaptable to the registration status (403). A corresponding method of facilitating adaptable registration includes determining a registration contention information (501), the registration contention information corresponding to a contention procedure implemented by the plurality of terminals, and sending a message corresponding to said system registration information (519).
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: November 12, 1996
    Assignee: Motorola, Inc.
    Inventors: Farzan Mamaghani, Thomas W. Lockhart, William H. Kilner