Javier O Cardona

US Patent:

8442553, May 14, 2013

Filed:

Mar 22, 2011

Appl. No.:

13/069219

Inventors:

Javier Cardona - San Francisco CA, US
Frédéric Lassabe - Belfort, FR
Alejandro Herrera - Barcelona, ES

Assignee:

Cozybit Inc. - San Francisco CA

International Classification:

H04W 24/00

US Classification:

4554561, 34235743

Abstract:

A method and apparatus is disclosed herein for determining the location of a device with the assistance of fixed receivers. In one embodiment, the method comprises receiving a first request from the mobile device in the wireless network; wirelessly transmitting one or more positioning requests in response to the first request; receiving signal strength information from one or more receivers in the wireless network sent in response to the one or more positioning requests; determining a location of the mobile device based on received signal strength information by comparing the received signal strength information with signal strength information of reference locations; and sending location information to the mobile device, where the location information is indicative of the location of the mobile device.

US Patent:

20020065620, May 30, 2002

Filed:

Jul 27, 2001

Appl. No.:

09/917477

Inventors:

John Drinkard - Redwood City CA, US
Javier Cardona - Alameda CA, US
Christopher Dums - Clayton NC, US

International Classification:

G01R013/00

US Classification:

702/066000

Abstract:

A data reduction circuit serves as a post-processor for digitized waveform data, providing reduced data sets for subsequent processing. Preferably, the data reduction circuit receives one or more potentially long sequences of digital waveform data and provides as output sets of sequence numbers corresponding to transitions in the digitized waveforms. In this manner, a processor concerned with the location of waveform transitions is relieved from the burden of processing the sequences just to identify the transition points. In some embodiments, the data reduction circuit cooperates with a waveform digitizer that produces digitized sequences of comparator waveforms in a laser-based distance measuring circuit. Transition points in the digitized waveform correspond to return reflections of emitted laser pulses and may be used to identify laser pulse flight time. Thus, reporting only sequence numbers for the waveform transition points greatly reduces the amount of data transferred to a distance-calculating processor.

US Patent:

20030061257, Mar 27, 2003

Filed:

Sep 25, 2001

Appl. No.:

09/963199

Inventors:

Javier Cardona - Alameda CA, US

International Classification:

G06F009/00
G06F015/16
G06F015/173
G06F009/46

US Classification:

709/102000, 709/202000, 709/318000, 709/223000

Abstract:

A system and method for a multithreaded universal daemon (MUD) is described. The MUD is generated from library functions common to all daemons, and is optimized for a specific type of data and protocol. The MUD includes a plurality of data sockets monitored by one of a plurality of tasks. The tasks connect the data socket to an appropriate application specific connection handler when data is received.

US Patent:

20090323655, Dec 31, 2009

Filed:

Mar 31, 2009

Appl. No.:

12/415569

Inventors:

Javier Cardona - San Francisco CA, US
Alejandro Herrera Pero - Barcelona, ES
Andrey Yurovsky - San Francisco CA, US

Assignee:

Cozybit, Inc. - San Francisco CA

International Classification:

H04W 4/00

US Classification:

370338

Abstract:

A system and method perform wireless networking that allows a cellular phone user to invite and share conversations with other cellphones or wireless communication devices in local spatial proximity by means of a wireless mesh or infrastructure or an ad-hoc network. In the system and method, there is no per-minute cost by using wireless local area networks in the unlicensed spectrum, such as a 802.11 network. Conversations are shared with only the intended persons. To join a conversation using the method, users only require any wireless device, and not necessarily a cellphone, such as a laptop with wireless capability.

US Patent:

20140030982, Jan 30, 2014

Filed:

Jun 21, 2013

Appl. No.:

13/924238

Inventors:

Javier Cardona - San Francisco CA, US

International Classification:

G01S 11/06

US Classification:

455 6711

Abstract:

A method and apparatus are disclosed herein for distance estimation using signal strength information. In one embodiment, the method comprises receiving a broadcast communication from one of a plurality of devices in a wireless mesh network in which devices communicate via peer-to-peer communication, measuring signal strength information corresponding to the received broadcast communication, and using the signal strength information to determine an estimate of distance between a first device and the one device.

US Patent:

20170111510, Apr 20, 2017

Filed:

Oct 14, 2016

Appl. No.:

15/294645

Inventors:

- San Francisco CA, US
Javier CARDONA - San Francisco CA, US

International Classification:

H04M 3/537
H04M 1/65
H04W 60/00
H04W 4/02
H04M 1/725

Abstract:

A special-purpose mobile communication device using low-bandwidth cellular technology designed for IoT applications, such Narrowband LTE for IoT, is used to securely exchange voice messages in real-time or near real-time with another user. The voice messages are short duration voice messages, also referred to as voice clips, that are capable of being compressed using file compression algorithms instead of stream compression methods ordinarily used for real-time audio. A general-purpose mobile communication device activates the special-purpose devices and creates a private network for securely exchanging the voice messages between the devices. The general-purpose device also operates a mobile application that interfaces with a cloud-based mobile voice communication and location tracking system to manage the voice messages and track the location of the special-purpose device using Observed Time Difference of Arrival measurements.

US Patent:

20140219260, Aug 7, 2014

Filed:

Mar 27, 2013

Appl. No.:

13/851746

Inventors:

Javier Cardona - San Francisco CA, US

International Classification:

H04W 8/00

US Classification:

370338

Abstract:

A method and apparatus is disclosed herein for communicating between mobile devices. In one embodiment, the method comprises launching an application on a first mobile device, joining a wireless mesh network with the first mobile device being a node in the wireless mesh network in response to launching the application, discovering one or more other mobile devices that are active in the wireless mesh network using a discovery protocol, receiving profile information from each of the one or more other mobile devices, and displaying a visual directory of participants associated with the one or more other mobile devices active in the wireless mesh network.

US Patent:

20140164225, Jun 12, 2014

Filed:

Apr 4, 2013

Appl. No.:

13/856982

Inventors:

Javier Cardona - San Francisco CA, US

International Classification:

G06Q 20/32

US Classification:

705 39

Abstract:

A method and apparatus are disclosed herein for content distribution and deferred payment over a wireless network. In one embodiment, the method comprises: receiving content at a first mobile device in a first network directly from a second mobile device in the first network, making use of the content by the first mobile device while deferring payment for the content due to network access being unavailable to a remote license server in a second network different than the first network, and contacting the remote license server when the first mobile device gains network access to the second network to cause payment to be made for the content.