Patents by Inventor Hatch Graham

Hatch Graham 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).

  • Publication number: 20190075555
    Abstract: A wireless network includes at least a pair of nodes that are configured to communicate with each other by transmitting and receiving one or more millimeter-wave beams through an obstruction and through unobstructed air. In accordance with an exemplary embodiment of the network, the nodes include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, barriers within buildings, and the attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed wireless network to be established within a structure, such as a building, without requiring additional cabling or wiring.
    Type: Application
    Filed: February 27, 2018
    Publication date: March 7, 2019
    Inventors: Hatch Graham, III, Harry William Peterson
  • Publication number: 20180302238
    Abstract: A communication network includes nodes configured into a wireless ring network operating at one or more millimeter-wave frequencies. At least one of the nodes is configured to send and receive millimeter-wave wireless signals through an obstruction. In accordance with an exemplary embodiment of the network, one or more of the nodes may include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, ceilings, and other barriers within buildings, as well as attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed, wireless, multi-ring network to be established, for example, within a structure, such as a building, without requiring additional cabling or wiring.
    Type: Application
    Filed: April 17, 2018
    Publication date: October 18, 2018
    Inventors: Hatch Graham, III, Harry William Peterson
  • Publication number: 20180269957
    Abstract: Apparatuses, systems, and methods for wireless millimeter-wave communications are disclosed. An apparatus is configured to rotate about an axis so as to improve transfer of wireless signals. The apparatus includes a support having a first side and a second side. A first phased array antenna is mounted to the support facing away from the first side. A second phased array antenna mounted to the support facing away from the second side. The apparatus further includes a means for rotating the support, such as a hinge or a pivot. By rotating the support in the field, the coverage of the wireless signals to/from at least one of the phased array antennas may be improved.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 20, 2018
    Inventors: Hatch Graham, III, Harry William Peterson
  • Publication number: 20180248612
    Abstract: Apparatuses, systems, and methods that allow millimeter-wave communication signals to pass efficiently and reliably through obstructions are disclosed. An apparatus includes a first wireless transceiver and a first phased array antenna coupled to the first wireless transceiver. A second phased array antenna is also coupled to the first wireless transceiver. The apparatus additionally includes a second wireless transceiver and a third phased array antenna coupled to the second wireless transceiver. The third phased array antenna is adapted to emit a third millimeter wave beam through an obstruction. A fourth phased array antenna is also coupled to the second wireless transceiver. The fourth phased array antenna is adapted to receive a fourth millimeter wave beam through the obstruction. A controller is included in the apparatus for managing data transfer between the first wireless transceiver and the second wireless transceiver so that a fully duplexed communication path is available between the antennas.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 30, 2018
    Inventors: Hatch Graham, III, Harry William Peterson, Karl Douglas Triebes
  • Patent number: 5553064
    Abstract: A high speed bidirectional cable transmission system for CATV and other television systems includes unidirectional transmission of video signals from a head end unit to a plurality of transceivers or subscribers connected to a transmission line. The head end unit encodes voice data using QPSK encoding and time division multiplexing of the encoded data in a plurality of frequency bands to the subscribers. Each subscriber attached to the cable for receiving continuous transmission of voice and video data is assigned an identification number and at least one voice channel for selectively accessing data. Each subscriber includes a transmitter for transmitting voice data on the cable to the head end unit using time division multiple access transmission of bursts of data in a plurality of frequency bands.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: September 3, 1996
    Assignee: Stanford Telecommunications, Inc.
    Inventors: Thomas M. Paff, Hatch Graham
  • Patent number: 5412352
    Abstract: A modulator for data transmitted in a reverse channel or upstream spectrum in a cable transmission system requires a single frequency translation from baseband to a selected RF channel, thus eliminating conventional intermediate frequency (IF) translation. The modulator requires fewer components than the conventional modulator while eliminating nonlinearity, noise, and delay introduced by the IF upconversion. In a preferred embodiment, the modulator includes a serial to parallel differential quadrature phase shift keying encoder with transversal FIR filters and interpolation filters connecting the phase shift keyed data to a single mixer stage for directly translating the baseband signal to an RF (e.g., 5-40 MHz) channel spectrum.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: May 2, 1995
    Assignee: Stanford Telecommunications, Inc.
    Inventor: Hatch Graham
  • Patent number: 5351270
    Abstract: A portable cellular telephone system including a stationary transceiver for radio communication with a plurality of mobile transceivers within a geographic cell, a mobile transceiver within said geographic cell and having sufficient power to communicate with said stationary transceiver, and a portable transceiver of limited size for personal transport and use. The portable transceiver communicates with the mobile transceiver by spread spectrum techniques, and the mobile transceiver communicates with the stationary transceiver by frequency modulated radio transmission or by digital radio transmission.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: September 27, 1994
    Assignee: Stanford Telecommunications, Inc.
    Inventors: Hatch Graham, Charles Moses, Leonard Schuchman, Ronald Bruno
  • Patent number: 5349608
    Abstract: In a Viterbi decoder including an add-compare-select (ACS) processor, speed is enhanced without loss of performance by maintaining a dynamic cumulative metric range for computed state metrics. Current state metrics are added to new branch metrics to obtain two computed metrics, and the smaller of the two computed metrics is stored along with previously computed state metrics. The stored state metrics are compared with a selected scale factor, for example one-half maximum scale factor, and all current state metrics are rescaled when the minimum stored metric value exceeds the selected scale factor.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: September 20, 1994
    Assignee: Stanford Telecommunications, Inc.
    Inventors: Hatch Graham, Christine Nguyen
  • Patent number: 5142487
    Abstract: A numerically controlled oscillator includes a phase accumulator which generates sequences of phase word phase signals. A demultiplexer 104 directs the odd and even numbered phase angle words of the sequence to identical but independent lookup tables to generate corresponding waveform signals. The wave form signals at the output of each lookup table occur at one-half the frequency of the system clock. A multiplexer 108 interleaves the output signals from the lookup tables to provide a properly ordered sequence of waveform signals at the frequency of the system clock. The maximum system clock frequency can be approximately twice the maximum operating frequency of each lookup table.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: August 25, 1992
    Inventor: Hatch Graham, III
  • Patent number: 4786904
    Abstract: An electronically programmable gate array comprises a plurality of rows of logic cells with each cell having a plurality of inputs, at least one output, and a plurality of electronically programmable voltage levels for configuring the cell. A plurality of sets of interconnect lines are formed in the array with one set of interconnect lines provided between adjacent rows of logic cells with electronically programmable contacts connecting inputs and an output of each cell in a row of cells with two adjacent sets of interconnect lines. Each row of logic cells preferably includes alternating three-input cells and two-input cells. Each electronically programmable voltage level comprises two voltage alterable resistors serially connected between first and second voltage potentials. Each electronically programmable interconnect comprises a voltage alterable resistor.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: November 22, 1988
    Assignee: Zoran Corporation
    Inventors: Hatch Graham, III, Daniel Seltz