Patents by Inventor Ronald L. Baldridge

Ronald L. Baldridge 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).

  • Modem for tight coupling between a computer and a cellular telephone
    Patent number: 5428671
    Abstract: A modem which includes connections for both land lines and a cellular phone. The modem contains high and low level routines that allow it to perform standard AT commands rationally when connected to a cellular phone, and further perform additional AT commands that access cellular specific features. An applications software program in a computer connected to the modem can provide a number of options for determining whether to use the land line or the cellular phone when both are connected. First, it can default to the land line and only use the cellular phone if the land line is not available. Alternatively, it can first use the cellular phone and only use the land line if the cellular phone signal strength is not sufficient. Further, cellular file transfer operations can be aborted if the remaining battery life in the cellular phone is insufficient to reliably complete the transfer.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: June 27, 1995
    Assignee: Compaq Computer Corporation
    Inventors: Don A. Dykes, Robin T. Castell, Andrew C. Clark, Paul E. Nagel, Huyen B. Tran, Randall L. Jones, Ronald L. Baldridge
  • Modem for tight coupling between a computer and a cellular telephone
    Patent number: 5408520
    Abstract: A modem which includes connections for both land lines and a cellular phone. The modem contains high and low level routines that allow it to perform standard AT commands rationally when connected to a cellular phone, and further perform additional AT commands that access cellular specific features. An applications software program in a computer connected to the modem can provide a number of options for determining whether to use the land line or the cellular phone when both are connected. First, it can default to the land line and only use the cellular phone if the land line is not available. Alternatively, it can first use the cellular phone and only use the land line if the cellular phone signal strength is not sufficient. Further, cellular file transfer operations can be aborted if the remaining battery life in the cellular phone is insufficient to reliably complete the transfer.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: April 18, 1995
    Assignee: Compaq Computer Corporation
    Inventors: Andrew C. Clark, Randall L. Jones, Ronald L. Baldridge