Patents by Inventor David W. Abmayr

David W. Abmayr 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).

  • Patent number: 5325532
    Abstract: A computer system which includes certain minimum capabilities in a system ROM. Device driver software is located in the system ROM or adapter ROM's. On boot the computer system collects these device drivers from ROM to develop a minimal system. If a removable medium such as a floppy disk or CD-ROM is present a configuration mode is entered when final driver files and operating system modules are stored on a selected hard disk. After this storage the device driver modules and operating system modules necessary to develop a boot image of the operating system are gathered and linked. The boot image is generated and stored, allowing use on the following boot operations. The computer system detects device changes and rebuilds the boot image as necessary. If the devices have remained the same the previously stored boot image is loaded and operating system execution commences.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: June 28, 1994
    Assignee: Compaq Computer Corporation
    Inventors: Wm. Caldwell Crosswy, Dwight L. Barron, David W. Abmayr, Harvey M. Rosenblum, David M. Burckhartt
  • Patent number: 4349695
    Abstract: The specification discloses a system and method for authenticating a message recipient prior to transmission of a message and for authenticating the message content after receipt of the message. A randomized character or character sequence is initially enciphered at the authenticator station and stored. The enciphered character is transmitted to the message recipient. The enciphered character is deciphered by the message recipient to reproduce the randomized character. The randomized character is reenciphered by the message recipient and transmitted back to the authenticator station. The reenciphered character is deciphered and the stored randomized character is compared with the deciphered character. The message recipient is authenticated if the stored randomized character exactly compares with the deciphered character. In order to authenticate the message after receipt, polynomial block check characters are accumulated from the message.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: September 14, 1982
    Assignee: Datotek, Inc.
    Inventors: Barrie O. Morgan, David W. Abmayr
  • Patent number: 4223381
    Abstract: A selective memory addressing scheme employs a programmable read only memory (PROM) which responds to the opcode of the next instruction to be executed and supplies control information to memory module selection registers.The memory module selection registers operate in conjunction with the internal address registers to provide the necessary steering information for properly addressing the intended memory location. The PROM is programmed in accordance with the instruction set by which the processor operates and is coupled to decode the opcode contents of the instruction register that has been loaded, in a lookahead fashion, with the instruction following the instruction presently being executed by the central processing unit.The PROM has a first output that defines whether or not a second output of the PROM is to be used to select the memory module containing the operand to be referenced in the execution of the next instruction.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: September 16, 1980
    Assignee: Harris Corporation
    Inventors: James O. Rozell, David W. Abmayr