Patents by Inventor Glenn N. Mayer

Glenn N. Mayer 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).

  • Method for generating a password using public key cryptography
    Patent number: 5398285
    Abstract: In a communication system, a password that enables an embedded software program within a base station can be generated using public key cryptography in the following manner. A system controller (103) obtains a unique identification code and an embedded software code for the base station (101). Once obtained, the system controller (103) encrypts the unique identification code and the embedded software code using a private key to produce a password. The password is transferred to the base station (101) where, upon receipt, is decrypted using a public key to produce the unique identification code and the embedded software code. The base station (101) compares the unique identification code and an embedded unique identification code (107) and, when they substantially match, the base station (101) stores the password.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: March 14, 1995
    Assignee: Motorola, Inc.
    Inventors: Kenneth B. Borgelt, Glenn N. Mayer
  • Method of maintaining control in a trunked communication system
    Patent number: 5349584
    Abstract: A master repeater controls a trunked communication system having a number of communication resources. The master repeater determines (201) how many communication resources are available to the master repeater. When one control resource and one message resource are among the available communication resources (203), the master repeater suspends (211) trunked communication system operation when the number of available communication resources are less than a minimum number of resources (205), and the available communication resources fail to include all control resources (207) from the trunked communication system.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: September 20, 1994
    Assignee: Motorola, Inc.
    Inventors: David A. Sticha, Glenn N. Mayer, Stephen J. Ranz, John Garbarino
  • Method and apparatus for reducing spurious noise levels in an audio system
    Patent number: 5249199
    Abstract: An audio system (600) typically includes an audio signal processor (610), a controller (607) for controlling data signals, and a peripheral data source (613). The audio signal processor (610) exchanges information with a remote audio device (603) via a communication resource (605). A method of reducing spurious noise levels on the communication resource (605) includes generating a timing signal (400) having a period and randomly altering the period (409, 411, 413) of the timing signal (400) between a first predetermined value and a second predetermined value. The randomly altered timing signal are then used to effect control of the data signals, while providing a reduced level of spurious noise on the communication resource (605).
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: September 28, 1993
    Assignee: Motorola, Inc.
    Inventors: Glenn N. Mayer, John Snick, Randy L. Eki