Victor C Lum

US Patent:

7697573, Apr 13, 2010

Filed:

Mar 3, 2005

Appl. No.:

11/071818

Inventors:

Jeffrey Steinheider - Arlington MA, US
Gerald Britton - Boston MA, US
Victor Lum - Cambridge MA, US

Assignee:

Vanu, Inc. - Cambridge MA

International Classification:

H04J 3/06

US Classification:

370516, 370519

Abstract:

Transmitting messages to mobile telephones includes determining a time a standard requires or permits a standard compliant transmission to be received by a user, and scheduling a transmission by a base station to the user in the future based on a distance between the user and a base station such that the transmission will be received by the user at the determined time. The distance between the user and the base station is a distance such that a propagation delay between the user and the base station is larger than a propagation delay accommodated by the standard.

US Patent:

8094646, Jan 10, 2012

Filed:

Feb 25, 2010

Appl. No.:

12/712788

Inventors:

Jeffrey Steinheider - Arlington MA, US
Gerald Britton - Somerville MA, US
Victor Lum - Cambridge MA, US

Assignee:

Vanu, Inc. - Cambridge MA

International Classification:

H04J 3/06

US Classification:

370350, 370508, 370519

Abstract:

Effects of variation in computational latency can be controlled by using a processor to perform computations associated with a signal processing process, each computation related to processing an input sample to generate an output, and allocating a processing cost per computation that is less than a maximum processing cost of the processor for performing any one of the computations and greater than an average processing cost of the processor for performing the computations. The allocated processing cost for a computation is an allocated time period between receipt of the input sample and generation of the output for the computation. A task requiring a processing time greater than the allocated processing cost is handled as a source of jitter in the signal processing process.

US Patent:

20040209580, Oct 21, 2004

Filed:

Nov 17, 2003

Appl. No.:

10/716180

Inventors:

Vanu Bose - Cambridge MA, US
John Chapin - Arlington MA, US
Steve Muir - Philadelphia PA, US
Jeffrey Steinheider - Arlington MA, US
Victor Lum - Cambridge MA, US

International Classification:

H04B007/00
H04L012/28
H04B001/04
H04B001/02
H04N007/173
H04Q007/20

US Classification:

455/103000, 725/095000, 370/431000, 455/515000

Abstract:

In one aspect, the invention is a method for allocating channels. The method includes determining a communication standard used by a message and determining available channels. The method also includes allocating a channel based on the available channels and the communication standard used by the message. The method may also include sending an instruction to use the channel.

US Patent:

20050286536, Dec 29, 2005

Filed:

Jun 9, 2005

Appl. No.:

11/148949

Inventors:

Jeffrey Steinheider - Arlington MA, US
Vanu Bose - Boston MA, US
Victor Lum - Cambridge MA, US

International Classification:

H04L012/28

US Classification:

370395520

Abstract:

Methods and systems for reducing backhaul bandwidth are disclosed.

US Patent:

20070147294, Jun 28, 2007

Filed:

Mar 5, 2007

Appl. No.:

11/682110

Inventors:

Vanu Bose - Cambridge MA, US
John Chapin - Arlington MA, US
Steve Muir - Philadelphia PA, US
Jeffrey Steinheider - Arlington MA, US
Victor Lum - Cambridge MA, US

International Classification:

H04Q 7/00
H04L 12/28

US Classification:

370329000, 370431000

Abstract:

In one aspect, the invention is a method for allocating channels. The method includes determining a communication standard used by a message and determining available channels. The method also includes allocating a channel based on the available channels and the communication standard used by the message. The method may also include sending an instruction to use the channel.

US Patent:

42364183, Dec 2, 1980

Filed:

Sep 8, 1978

Appl. No.:

5/940467

Inventors:

Victor Lum - Lexington MA

International Classification:

F16H 2702

US Classification:

74 88

Abstract:

A multi-element writing instrument is disclosed for use in computer-operated plotters or similar graphics systems. Successive applications of a linear force applied along the axis of the instrument are converted to rotary motion which is employed to select successive elongate writing elements normally positioned at a uniform radial spacing from the axis of the writing instrument. Each selected element is displaced in a substantially axial direction a distance sufficient to extend the writing point of the element through the exit opening of the instrument.

US Patent:

42741025, Jun 16, 1981

Filed:

Mar 2, 1979

Appl. No.:

6/017060

Inventors:

Victor Lum - North Billerica MA

International Classification:

G01D 930

US Classification:

346139R

Abstract:

A multi-element writing instrument is disclosed for use in computer-operated plotters or similar graphics systems. Successive applications of a linear force applied along the axis of the instrument are converted to rotary motion which is employed to select successive elongate writing elements normally positioned at a uniform radial spacing from the axis of the writing instrument. Each selected element is displaced in a substantially axial direction a distance sufficient to extend the writing point of the element through the exit opening of the instrument.

US Patent:

43592910, Nov 16, 1982

Filed:

Jan 18, 1980

Appl. No.:

6/113299

Inventors:

Victor Lum - North Billerica MA

International Classification:

B43K 2708

US Classification:

401 33

Abstract:

A multi-element writing instrument is disclosed wherein the rotation of a selection portion located at one end of the instrument successively selects, advances and retracts individual writing elements. The writing point of each selected writing element is axially advanced through the exit opening without contact with the interior of the body of the instrument. In the writing position the axis of the selected element is aligned with the axis of the instrument. The novel construction permits the use of elements that employ different types of nibs, for example porous writing points, either alone or in combination with ball point-tipped elements.