David P Paulsen

US Patent:

6999441, Feb 14, 2006

Filed:

Jun 27, 2001

Appl. No.:

09/894843

Inventors:

David L. Paulsen - Mountain View CA, US
Michael W. Ritter - Los Altos CA, US

Assignee:

Ricochet Networks, Inc. - Denver CO

International Classification:

H04J 3/00

US Classification:

370337, 370321, 370347, 370310

Abstract:

In a mesh communication network, a poll request protocol (PRP) is provided in which a special packet is broadcast by the congested node when it is ready to provide services. The controlling node (usually the more congested node) broadcasts a packet to request poll signals from nodes desiring resources of the controlling node. The contending nodes then have equal chances to request the services of the controlling node by sending poll signals. The controlling node can then arbitrate the requests, determine the most fair and efficient use of its resources, and broadcast a scheduling packet to inform the contending nodes when to inform the contending nodes of controlling node scheduling. The contending nodes then send their packets to the controlling node without lost packets caused by congestion collisions. The controlling node can then send data to the contending nodes also without lost packets.

US Patent:

20060098604, May 11, 2006

Filed:

Dec 9, 2005

Appl. No.:

11/297947

Inventors:

George Flammer - Cupertino CA, US
David Paulsen - Mountain View CA, US
Michael Ritter - Los Altos CA, US

Assignee:

Ricochet Networks, Inc. - Denver CO

International Classification:

H04B 7/212

US Classification:

370337000, 370449000

Abstract:

In a mesh communication network, a poll request protocol (PRP) is provided in which a special packet is broadcast by the congested node when it is ready to provide services. The controlling node (usually the more congested node) broadcasts a packet to request poll signals from nodes desiring resources of the controlling node. The contending nodes then have equal chances to request the services of the controlling node by sending poll signals. The controlling node can then arbitrate the requests, determine the most fair and efficient use of its resources, and broadcast a scheduling packet to inform the contending nodes when to inform the contending nodes of controlling node scheduling. The contending nodes then send their packets to the controlling node without lost packets caused by congestion collisions. The controlling node can then send data to the contending nodes also without lost packets.

US Patent:

55153690, May 7, 1996

Filed:

Jun 24, 1994

Appl. No.:

8/265096

Inventors:

George H. Flammer - Cupertino CA
Brett D. Galloway - Campbell CA
David L. Paulsen - Mountain View CA

Assignee:

Metricom, Inc. - Los Gatos CA

International Classification:

H04J 114

US Classification:

370 691

Abstract:

In a wireless packet communication system having a plurality of nodes, each having a transmitter and a receiver, the receiver at each node is assigned a seed value and is provided with a channel punchout mask. A node uses its seed value and punchout mask to generate a specific randomly ordered channel hopping band plan on which to receive signals. A node transmits its seed value and punchout mask to target nodes with which it wants to establish communication links, and those target nodes each use the seed value and punchout mask to generate the randomly ordered channel hopping band plan for that node. Subsequently, when one of the target nodes wish to transmit to the node, the target node changes frequency to the frequency of the node according to that node's band plan.

US Patent:

57062218, Jan 6, 1998

Filed:

May 13, 1996

Appl. No.:

8/647613

Inventors:

David L. Paulsen - Mountain View CA

Assignee:

Metricom, Inc. - Los Gatos CA

International Classification:

G06G 702

US Classification:

364825

Abstract:

A data filter consists of an electronic circuit with a delay and offset in a feedback loop to a reference input of a comparator to provide low frequency tracking of a binary-level data signal so digital information can be extracted at the output of the comparator by causing the reference input to track a relatively slowly-varying baseband neutral signal level. The delay is preferably implemented by a low-pass filter, providing additional noise immunity.

US Patent:

56641940, Sep 2, 1997

Filed:

Dec 4, 1995

Appl. No.:

8/566877

Inventors:

David L. Paulsen - Mountain View CA

Assignee:

Metricom, Inc. - Los Gatos CA

International Classification:

G06F 906
G06F 9445

US Classification:

395712

Abstract:

In a computer-driven device, a start-up mode after reset is provided whereby boot-up instructions are by default always accepted directly from an external source. The device may comprise a gate array (GA) which is connected directly via a serial port to a receiving or input device, to receive program code for transfer directly as instructions to a microprocessor-type central processing unit. The central processing unit is part of a computer controlled device containing a microprocessor, memory (a RAM), and typically a bulk erase flash memory device, the flash memory device being unprogrammed when the computer controlled device is fabricated originally. When the computer controlled device first powers up, a special mode of operation ensues in which the gate array directly monitor bits received via the serial port from the input device and shifts them into a local register from which bytes or words are loaded directly into the CPU as instructions. A boot sequence is thereby accepted in this manner to load random access memory of the free-running CPU which thereafter can control transfer of additional executable code or load a permanent boot sequence into bulk erase (nonvolatile) flash memory. The invention can be incorporated into a wireless modem/packet terminal node controller.

US Patent:

D2805111, Sep 10, 1985

Filed:

Oct 18, 1982

Appl. No.:

6/435128

Inventors:

William G. Moggridge - Palo Alto CA
David C. Paulsen - Santa Clara CA
Glenn T. Edens - Menlo Park CA
Stephen R. Hobson - Palo Alto CA

Assignee:

Grid Systems Corporation - Mountain View CA

US Classification:

D14106

US Patent:

45731292, Feb 25, 1986

Filed:

Aug 27, 1984

Appl. No.:

6/645512

Inventors:

David C. Tribolet - San Diego CA
David L. Paulsen - San Diego CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G06K 1540

US Classification:

364520

Abstract:

A bi-directional pen plotter includes two pen stables and a pen holder located between the two pen stables for snatching a pen from either pen stable and for inserting a pen into either pen stable. There are four distinct stops to the motion of the pen holder at each pen stable depending on the four possible combinations of pen locations. Measuring the relative distances travelled by the pen holder in an initialization procedure the positions of all of the pens in the system may be determined uniquely.

US Patent:

D2806223, Sep 17, 1985

Filed:

Oct 18, 1982

Appl. No.:

6/435129

Inventors:

William G. Moggridge - Palo Alto CA
David C. Paulsen - Santa Clara CA
Glenn T. Edens - Menlo Park CA
Stephen R. Hobson - Palo Alto CA

Assignee:

Grid Systems Corporation - Mountain View CA

US Classification:

D14100