MARK JAMES RICH
Pilots at Santa Margarita Ave, Menlo Park, CA

5278844, Jan 11, 1994

Apr 11, 1991

7/683918

John L. Murphy - San Francisco CA
Mark J. Rich - Menlo Park CA

USA Digital Radio - Los Angeles CA

G06F 1108, H04L 104

371 371

A radio broadcasting system is provided for transmitting and receiving through free space a fully coherent multicarrier modulated digital signal which is especially adapted to be resistive to multipath degradation. The multicarrier modulated signal is a synthesized vector-modulated signal which is a quadrature phase shift keyed (QPSK) modulated set of synthesized carriers phase coherent with each other and each occupying a spectrum replicated multiple times within a bandwidth with no more than two bits per vector. An efficient channel coding consisting of large block size, high efficiency block coding, such as BCH 255, 239 code, is employed in connection with time interleaving of bits to mitigate the effects of frequency selective multipath and broadband multipath. The broadcast system is designed to be used in support of compressed digital audio programming material. In a demodulation process according to the invention, a demodulator is operative to phase lock to a reconstructed or otherwise coherent pilot tone or equivalent clock, to coherently demodulate the digital signal, to deinterleave, to decode the block encoded signal and to format the recovered data stream for source decoding.

5315583, May 24, 1994

Apr 11, 1991

7/684529

John L. Murphy - San Francisco CA
Mark J. Rich - Menlo Park CA

USA Digital Radio - Los Angeles CA

H04J 1300

370 18

A radio broadcasting system for a composite signal consisting of a frequency modulated (fm) analog signal and a multicarrier modulated digital signal is provided which is resistive to multipath degradation. The fm signal and the digital multicarrier modulated signal are fully coherent. The digital signal uses a plurality of carriers having a maximum amplitude at least 20 dB below the unmodulated fm signal. The multicarrier modulated signal is phase locked to a recovered analog fm pilot tone in the composite baseband spectrum of the fm signal which is at least 20 dB above the multicarrier modulated signal, which enables rapid and reliable acquisition of signal for coherent detection. In a specific embodiment the multicarrier modulated signal is a synthesized vector-modulated signal which is a quadrature phase shift keyed (QPSK) modulated set of synthesized carriers each occupying 9. 5 kHz of spectrum replicated twenty-one times within a 199.

5278826, Jan 11, 1994

Apr 11, 1991

7/683945

John L. Murphy - San Francisco CA
Mark J. Rich - Menlo Park CA

USA Digital Radio - Los Angeles CA

H04J 114, H04J 100

370 76

A radio broadcasting system is provided for transmitting and receiving through free space a composite signal consisting of a frequency modulated (fm) analog signal and a multicarrier modulated digital signal which is especially adapted to be resistive to multipath degradation. The fm signal and the digital multicarrier modulated signal are fully coherent. Further according to the invention, the digital signal comprises a plurality of carriers having a maximum amplitude at least 20 dB below the unmodulated fm signal and preferably, 30 dB below the analog signal. The multicarrier modulated signal is phase locked according to the invention to the recovered analog fm pilot tone at 19 kHz in the composite baseband spectrum of the fm signal which is at least 20 dB above the multicarrier modulated signal, which enables rapid and reliable acquisition of signal for coherent detection. In a specific embodiment, the multicarrier modulated signal is a synthesized vector-modulated signal which is a quadrature phase shift keyed (QPSK) modulated set of synthesized carriers each occupying 9. 5 kHz of spectrum replicated twenty-one times within a 199.

8644271, Feb 4, 2014

Feb 25, 2008

12/072238

Mark J. Rich - Menlo Park CA, US
Randy Frei - San Jose CA, US
Paul Gordon - Santa Clara CA, US

Trilliant Networks, Inc. - Redwood City CA

H04W 4/00

370338, 370328, 370330, 370347

A wireless mesh communication protocol that dynamically assigns communication time-slots and frequencies to mesh nodes. A first node is established as a PC that sequentially polls other nodes. A second node responds at a predetermined time with information that includes database records, and then a third node responds similarly. The second node is then established as the PC and the first node is polled during dynamically allocated time-slots and on a frequency that depend on the second node's database records. The third node is then established as a PC and acts similarly. In both cases the first node responds by sending information and data records. The first node is then re-established as the PC. The first node then polls the second and third nodes at times and frequencies that depend on the first node's database records.

7356043, Apr 8, 2008

Aug 17, 2006

11/505753

Thomas Hammel - San Francisco CA, US
Kirk Alton Bradley - Menlo Park CA, US
Mark J. Rich - Menlo Park CA, US

Skypilot Networks, Inc. - Santa Clara CA

H04L 12/43

370458, 370235

Network channel access protocol is disclosed. More particularly, a distributed, locally determined, channel access protocol that adapts to load, avoids interference and controls access by a group of nodes to a set of shared channels is disclosed. Shared channel space is divided into a number of communication slots that are repeated at a predetermined interval. Permission to use a slot to communicate between any two nodes is dynamically adjusted by the channel access protocol, which locally: (i) estimates load to neighboring nodes; (ii) allocates or deallocates slot usage to adapt to load and avoid interference; and (iii) asserts and advertises slot usage within an interference area about itself.

7616600, Nov 10, 2009

Apr 15, 2002

10/122883

Robert H. Sparr - Menlo Park CA, US
William G. Olsen - Bozeman MT, US
Thomas Hammel - San Francisco CA, US
Kirk Alton Bradley - Menlo Park CA, US
Mark J. Rich - Menlo Park CA, US
Michael R. Franceschini - Centerport NY, US
Joseph T. Merenda - Northport NY, US

Trilliant Networks, Inc. - Redwood City CA

H04W 4/00

370329, 4554221

Method and apparatus for providing a wireless mesh network and network node are described. More particularly, a network having network node neighborhoods is described. A node comprises a multi-sectored antenna and a transceiver controller. Nodes are configured for installation without antenna pointing and without pre-coordination with the network. Software architecture for the node is also described.

8249042, Aug 21, 2012

Apr 15, 2002

10/122762

Robert H. Sparr - Menlo Park CA, US
William G. Olsen - Bozeman MT, US
Thomas Hammel - San Francisco CA, US
Kirk Alton Bradley - Menlo Park CA, US
Mark J. Rich - Menlo Park CA, US
Michael R. Franceschini - Centerport NY, US
Joseph T. Merenda - Northport NY, US

Trilliant Networks, Inc. - Redwood City CA

H04J 1/00

370343, 370230, 370433

Method and apparatus for providing a wireless mesh network and network node are described. More particularly, a network having network node neighborhoods is described. A node comprises a multi-sectored antenna and a transceiver controller. Nodes are configured for installation without antenna pointing and without pre-coordination with the network. Software architecture for the node is also described.

7053853, May 30, 2006

Jun 26, 2003

10/607405

Joseph Merenda - Northport NY, US
Mark J. Rich - Menlo Park CA, US

SkyPilot Network, Inc. - Santa Clara CA

H01Q 9/16

343820

A planar antenna that facilitates directional communication to a mesh network. The antenna is housed in a relatively small, planar package that can easily be attached to a window pane to enable the antenna to communicate with a neighboring rooftop mounted node of the mesh network. The package contains an M by N element phased array, where M and N are integers greater than one. The array is driven by microwave signals supplied from a P-angle phase shifting circuit, where P is an integer greater than one. Thus, the antenna synthesizes a single main beam and the antenna's main beam can be electrically “pointed” in one of P directions. In one embodiment of the invention, the array comprises 40 physical elements (8×5 elements) and has three selectable directions (i. e. , the phase shifters provide +90, 0 and −90 degree shifts that move the beam left 45 degrees, center and right 45 degrees).

8581794, Nov 12, 2013

Mar 4, 2010

12/717658

Arie Shor - Sunnyvale CA, US
Mark Rich - Menlo Park CA, US

QUALCOMM Incorporated - San Diego CA

H01Q 13/00

343776, 343777, 343772, 343786

Antenna arrays providing high gain during wireless communications are highly desirable for many applications including, but not limited to, multiple-in multiple-out (MIMO) streams and video transmissions. Optimized antenna arrays should also ensure ease of manufacture, thereby enhancing commercial viability. Circular antenna arrays including horn antennas or Yagi antennas are described, each circular antenna array ensuring ease of manufacture.

7113519, Sep 26, 2006

Apr 15, 2002

10/122583

Thomas Hammel - San Francisco CA, US
Kirk Alton Bradley - Menlo Park CA, US
Mark J. Rich - Menlo Park CA, US

Skypilot Networks, Inc. - Santa Clara CA

H04L 12/43

370458, 37039542

Network channel access protocol is disclosed. More particularly, a distributed, locally determined, channel access protocol that adapts to load, avoids interference and controls access by a group of nodes to a set of shared channels is disclosed. Shared channel space is divided into a number of communication slots that are repeated at a predetermined interval. Permission to use a slot to communicate between any two nodes is dynamically adjusted by the channel access protocol, which locally: (i) estimates load to neighboring nodes; (ii) allocates or deallocates slot usage to adapt to load and avoid interference; and (iii) asserts and advertises slot usage within an interference area about itself.