Patents by Inventor Stephen Lee Spear

Stephen Lee Spear 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: 6973069
    Abstract: The present invention provides a method for transporting multimedia information in a communication system. A plurality of streams are received. The streams together form a multimedia session. The plurality of streams are decoded, based upon the content of each individual stream, to form a plurality of decoded streams. Layer 2 functionality is performed upon each of the plurality of decoded streams.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: December 6, 2005
    Assignee: Motorola, Inc.
    Inventors: Stephen Lee Spear, Sanjay Gupta
  • Patent number: 6192037
    Abstract: The present invention provides a method for changing communication in a communication system (100). The communication system (100) includes a base station subsystem (102) and a mobile switching center (120). The base station subsystem (102) includes a first transcoder (108) and a second transcoder (109) connected to the mobile switching center (120), a first base station controller (106) connected to a first transcoder (108), a second base station controller (107) connected to a second transcoder (109), and a base transceiver station (104) connected to the first base station controller (106) and the second base station controller (107). A communication is established between a mobile station and the mobile switching center (120). The communication travels to the mobile switching center (120) via a first link (110) that includes the first base station controller (106).
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: February 20, 2001
    Assignee: Motorola, Inc.
    Inventor: Stephen Lee Spear
  • Patent number: 5974106
    Abstract: In one embodiment a system is provided for multirate communications allowing for different data rates for each data unit on a channel, including both data units from different mobile units and from the same mobile unit. A sending unit preferably begins by determining the rate at which to start communications, and monitors, for example by use of an RSSI detector, for an indication that the rate should be changed. A rate adjustor implements the change, and can make changes as frequently as every data unit. The encoder applies the appropriate rate and inserts a rate indicator indicative of the data or encoding rate, and sends the data unit. On receiving data units, the receiving unit first determines the rate for each data unit or group of units, then appropriately decodes the data unit(s). As a result, the actual data throughput can be adjusted to permit optimized throughput.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: October 26, 1999
    Assignee: Motorola, Inc.
    Inventors: Pierre B. Dupont, Ronald H. Gerhards, Stephen Lee Spear
  • Patent number: 5974325
    Abstract: A communication system employs a method and apparatus for exchanging communicated signals between a communication unit (e.g., 17) and a central site (205). A remote base site (65) or the central site (205) determines whether a signal must be exchanged between the communication unit (17) and the central site (205). When a signal is to be exchanged, the remote base site (65) allocates a first radio frequency communication resource (75) for use in exchanging the signal between the communication unit (17) and the remote base site (65) and a second radio frequency communication resource (74) for use in exchanging the signal between the remote base site (65) and the central site (205).
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: October 26, 1999
    Assignee: Motorola, Inc.
    Inventors: Michael D. Kotzin, Valy Lev, Stephen Lee Spear, John Stephen Ruppel
  • Patent number: 5642354
    Abstract: A method for improved data communications in a wireless system is described. An enhanced access burst is provided having an additional logical information field, or alternately using one of a set of possible synch sequences indicative of supplementary information. Upon receipt of a system parameter indicating an enhanced access burst capability, the communication unit sends an appropriate enhanced access burst with the increased information. A reduction in system messaging is thus achieved, e.g., by avoiding the need to send the supplemental information via subsequent bursts.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: June 24, 1997
    Assignee: Motorola, Inc.
    Inventor: Stephen Lee Spear