Lu Chang

US Patent:

6992658, Jan 31, 2006

Filed:

Oct 31, 2002

Appl. No.:

10/285258

Inventors:

Charles Wu - Palo Alto CA, US
Jin Guo - Sunnyvale CA, US
Lu Chang - Cupertino CA, US
Carlos McEvilly - Redwood City CA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G09G 5/00
G06K 11/06

US Classification:

345169, 345157, 345173, 178 1801

Abstract:

An apparatus and a method for entering information into an electronic device are provided. The apparatus () includes five text-input buttons (, etc) that can be activated by pressing or by touching. In one embodiment, the buttons are located on a disk (). Text is entered by pressing or touching a single text-input button and then passing a finger or thumb over additional buttons in a prescribed order. The apparatus may be used in conjunction with additional input devices, such as an ‘accept’ or ‘OK’ button. Four navigation buttons (, etc) are also provided. In one embodiment, these are additional buttons. In a further embodiment, four of the five text-input buttons are selectable as navigation buttons. The selection may be achieved by rotation of the disk () on which the buttons are located. The apparatus may also include a rotatable wheel or roller () to permit scrolling through lists.

US Patent:

7889686, Feb 15, 2011

Filed:

Jun 18, 2007

Appl. No.:

11/764796

Inventors:

Lu Chang - Cupertino CA, US
Paul Aerick Lambert - Mountain View CA, US

Assignee:

Picomobile Networks, Inc. - Santa Clara CA

International Classification:

H04B 7/00
H04L 12/26
H04J 1/16
G01R 31/08
G08C 15/00
H04W 40/00
H04W 36/00

US Classification:

370310, 370231, 370235, 455445, 4555521, 4555531, 455436

Abstract:

The present invention is a system of reception or transmission of media data, such as for audio or video streams, so that data communications alternate transmission or reception routes between available communications networks, choosing among parallel or single communications paths a most efficient and/or most reliable path for transmission of media packets.

US Patent:

7961756, Jun 14, 2011

Filed:

Jul 10, 2007

Appl. No.:

11/775347

Inventors:

Paul Aerick Lambert - Mountain View CA, US
Lu Chang - Cupertino CA, US
Ranjeet Shetye - Cupertino CA, US

Assignee:

PicoMobile Networks, Inc. - Sunnyvale CA

International Classification:

H04J 3/22
H04M 1/00

US Classification:

370469, 455574

Abstract:

A communications processor includes a first upper layer module to execute one or more upper layer protocols and a data link layer module to execute a data link layer protocol. A host processor includes a second upper layer module to execute the one or more upper layer protocols. A switching module causes the communications processor to operate in a first state or a second state. The communications processor executes only the data link layer protocol and none of the one or more upper layer protocols when the communications processor operates in the first state, and executes the data link layer protocol and the one or more upper layer protocols when the communications processor operates in the second state. The power saving module prevents the host processor from executing the one or more upper layer protocols executed by the communications processor when the communications processor operates in the second state.

US Patent:

7970384, Jun 28, 2011

Filed:

Jul 24, 2007

Appl. No.:

11/782422

Inventors:

Paul Aerick Lambert - Mountain View CA, US
Lu Chang - Cupertino CA, US

Assignee:

PicoMobile Networks, Inc. - Sunnyvale CA

International Classification:

H04L 12/58

US Classification:

4554121, 455466, 4554351, 4554142, 4555501

Abstract:

The present invention is a phonebook system including a mobile, wireless communications device having a microprocessor and user interface giving the user the capability of inputting, accessing, and modifying communication recipient identities, state data required to establish and/or enhance a communication session between the communications device and one or more recipients, and expanded information data.

US Patent:

8279884, Oct 2, 2012

Filed:

Jun 18, 2007

Appl. No.:

11/764790

Inventors:

Madihally J. Narasimha - Saratoga CA, US
Lu Chang - Cupertino CA, US

Assignee:

Pico Mobile Networks, Inc. - Sunnyvale CA

International Classification:

H04L 12/56

US Classification:

370412, 370410, 370516

Abstract:

The present invention is a method of correcting packet discontinuities using the steps of:.

US Patent:

8374584, Feb 12, 2013

Filed:

Jun 27, 2011

Appl. No.:

13/169746

Inventors:

Paul Lambert - Mountain View CA, US
Lu Chang - Cupertino CA, US

Assignee:

PICO Mobile Networks, Inc. - Sunnyvale CA

International Classification:

H04L 12/58

US Classification:

4554121, 4554122, 4555501, 455466, 715728

Abstract:

A first mobile, wireless communication device including a memory and a communication module. The memory is configured to store data associating a first user of the first mobile, wireless communication device with a second user of a second mobile, wireless communication device. The communication module is configured to, based on the data associating the first user of the first mobile, wireless communication device with the second user of the second mobile, wireless communication device, establish a communication link between the first mobile, wireless communication device and the second mobile, wireless communication device. In response to the second user being within a predetermined range of the first user, the first mobile, wireless communication device is configured to automatically receive, via the communication link, notification that the second user is within the predetermined range of the first user.

US Patent:

8428079, Apr 23, 2013

Filed:

Sep 21, 2009

Appl. No.:

12/563390

Inventors:

Paul A. Lambert - Mountain View CA, US
Lu Chang - Cupertino CA, US

Assignee:

Marvell International, Ltd - Hamilton

International Classification:

H04L 12/28
H04L 12/43
H04B 3/10
G06F 15/177
G06F 15/16

US Classification:

370461, 370254, 370491, 370500, 709222, 709228

Abstract:

An integrated circuit configured to operate in a mobile device includes a discovery generator module. The discovery generator module is configured to generate a corresponding random value for each beacon interval. A discovery control module is configured to determine a duration of time of a given beacon interval in which the mobile device is to operate in at least one of an active mode and a sleep mode. The duration of time is based on the corresponding random value generated for the given beacon interval. A physical layer (PHY) device is configured to wirelessly transmit a discovery request signal during the time the mobile device is operating in the active mode. The mobile device is partially powered down or fully powered down during the time the mobile device is operating in the sleep mode.

US Patent:

20040240739, Dec 2, 2004

Filed:

May 30, 2003

Appl. No.:

10/448768

Inventors:

Lu Chang - Cupertino CA, US
Giovanni Seni - Mountain View CA, US
Peng Zhan - Cupertino CA, US

International Classification:

G06K009/18

US Classification:

382/186000

Abstract:

A user interface for an electronic device has a pen based input device () that captures a collection of coordinates that correspond to handwritten information. According to certain embodiments, a processor () carries out a command recognition process in which a command gesture () is recognized () in the collection of coordinates. The command gesture identifies a set of coordinates form at least a portion of the collection of coordinates that represent a command (). The identified coordinates are then extracted () and translated to a command () for execution ().