Andrew S Lippman

US Patent:

7109865, Sep 19, 2006

Filed:

Sep 26, 2002

Appl. No.:

10/255557

Inventors:

Joseph A. Paradiso - Medford MA, US
Hongshen Ma - Cambridge MA, US
Andrew Benjamin Lippman - Salem MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G08B 13/14

US Classification:

3405721, 3405723, 3405724, 340571, 3405731, 3405391, 34053913, 34082569

Abstract:

An identification tag identifies a unique item from among a plurality of items with a similar appearance. Tagged items are searched by scanning the items with an interrogation signal. The tag emits an observable signal to indicate when it receives an identification that matches the identification contained in the tag. When the reader's interrogation is not present, the tag either sleeps at a very low power level or is passively unpowered.

US Patent:

7864051, Jan 4, 2011

Filed:

Sep 18, 2006

Appl. No.:

11/522612

Inventors:

Joseph A. Paradiso - Medford MA, US
Hongshen Ma - Cambridge MA, US
Andrew Benjamin Lippman - Salem MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G08B 13/14

US Classification:

3405721, 3405723, 3405724, 340571, 3405391, 34053913, 34082569, 340 1034

Abstract:

A quasi-passive wake-up function for an electronic device that employs a continuous low power standby mode compares a received signal to a predetermined signal and wakes up the device when the received signal is the same as the predetermined signal. An electronic device having a quasi-passive wakeup function includes a receiver for receiving at least one stimulus signal, a comparator for comparing the received signal to a predetermined signal, and at least one logic gate for waking up the electronic device when the received stimulus signal is the predetermined signal. In one application, identification tags are used to distinguish a unique tagged item from among a plurality of items with a similar appearance. When an interrogation signal is not present, the tags sleep at a very low power level.

US Patent:

8089887, Jan 3, 2012

Filed:

Nov 19, 2002

Appl. No.:

10/299973

Inventors:

Andrew Benjamin Lippman - Salem MA, US
David P. Reed - Needham MA, US
Aggelos Bletsas - Cambridge MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H04L 12/26
H04J 1/10
H04J 3/08
H04J 3/06

US Classification:

370246, 370492, 370501, 370516

Abstract:

A method and system provide routing of signals through a communications network. A transmitted signal is received. The signal has an associated parameter that is monitored as the signal is received. The parameter indicates the extent to which prior retransmission of the signal has occurred. The signal is retransmitted only if its parameter satisfies at least one predetermined criterion.

US Patent:

20010021950, Sep 13, 2001

Filed:

Jul 10, 1998

Appl. No.:

09/113206

Inventors:

MICHAEL HAWLEY - CAMBRIDGE MA, US
HENRY HOLTZMAN - BOSTON MA, US
ANDREW LIPPMAN - SALEM MA, US
MANISH TUTEJA - FOSTER CITY CA, US

International Classification:

G06F015/173

US Classification:

709/225000

Abstract:

Interaction with a computer network is facilitated or restricted based on a tangible token, such as a small card or disk, a small everyday article, a toy, or a product container. The token comprises a machine-readable indication, or “tag,” that identifies the token and which may be wirelessly read by a tag reader. The tag reader communicates the identifier to a computer connected to the network as a node. The computer, in response, determines and implements a network-access criterion based on the token. Generally, the computer maintains a database relating token identifiers to associated network-access criteria, and consults the database when presented with an identifier. The access criterion specifies information governing interaction between the computer and the network, and can serve to initiate connections or restrict them.

US Patent:

20090240359, Sep 24, 2009

Filed:

Dec 28, 2008

Appl. No.:

12/344542

Inventors:

Arn Hyndman - Ottawa, CA
Andrew Lippman - Salem MA, US
Nicholas Sauriol - Ottawa, CA

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

G06F 17/00
G06F 3/048

US Classification:

700 94, 715757

Abstract:

A participant in a three dimensional computer-generated virtual environment is able to control a dispersion pattern of his Avatar's voice such that the Avatar's voice may be directionally enhanced using simple controls. The audio dispersion envelope is designed to extend further in front of the Avatar and less to the sides and rear of the Avatar. The audio dispersion envelope may be static or controllable by the participant to enable the distance that the Avatar's voice travels within the virtual environment to be adjusted. This enables the Avatar to whisper or “shout” in the virtual environment such that other Avatars normally outside of hearing range of the Avatar may selectively receive audio generated by the user. Separate audio streams are mixed for each user from audio generated by users with Avatars within their Avatar's dispersion envelope. The volume of audio from a user in the mixed audio stream depends on the separation of the Avatars within the virtual environment.

US Patent:

20090296903, Dec 3, 2009

Filed:

May 29, 2008

Appl. No.:

12/129373

Inventors:

Andrew A. Lippman - Salem MA, US
Nalin Mistry - Ottawa, CA

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

H04M 11/00

US Classification:

379 9323

Abstract:

Described is a method for entry of information into a directory accessible to a caller telecommunications device. Information associated with a called telecommunications device is transmitted from the called telecommunications device over an auxiliary communication channel to a caller telecommunications device. The information is sent in response to an initiation of a communication, such as a voice communication, between the devices over a primary communication channel. An inquiry is presented to a user of the caller telecommunications device to determine if the received information is to be stored. If the user responds affirmatively, the information is stored in a directory in the caller telecommunications device or in a directory on a remote server accessible to the caller telecommunications device. In other embodiments one or more additional auxiliary communications channels are used to transmit or retrieve the information.

US Patent:

20130089133, Apr 11, 2013

Filed:

Oct 1, 2012

Appl. No.:

13/632422

Inventors:

Massachusetts Insstitute of Technology - Cambridge MA, US
Travis Sebastian Rich - Cambridge MA, US
Andrew B. Lippman - Salem MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H04N 7/12

US Classification:

37524001, 375E07026

Abstract:

System for conveying a stream of information. The system includes an encoding device employing a spatio-temporal coding scheme that omits light, including codes embedded therein that are invisible to a user. A receiver that might he a cell phone camera receives light from the encoding device and computer apparatus is programmed with software to decode the received light to generate the stream of information. The encoding device is preferably a video display.

US Patent:

50033778, Mar 26, 1991

Filed:

Jan 12, 1989

Appl. No.:

7/296511

Inventors:

Andrew B. Lippman - Salem MA
Edward H. Adelson - Cambridge MA
William J. Butera - Arlington VA

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H04N 1114

US Classification:

358 12

Abstract:

Methods and systems for adding additional information to broadcast motion picture signals so that an advanced receiver can decode that information to provide improved picture quality, while a standard receiver will display an image with minimally visible impairments. In particular, chrominance information can be generated at a fraction of the frame rate and the alternate frames then used to encode additional data, such as high definition luminance information in the chrominance signal.