Chang Feng

US Patent:

D569887, May 27, 2008

Filed:

May 7, 2007

Appl. No.:

29/279740

Inventors:

Chang Feng - Princeton NJ, US
Simon Paul Tidnam - Princeton NJ, US
Christopher Joseph Petescia - Sparta NJ, US

International Classification:

1601

US Classification:

D16202, D16242

US Patent:

20070270137, Nov 22, 2007

Filed:

Apr 11, 2007

Appl. No.:

11/734038

Inventors:

Chang Feng - Princeton NJ, US
Timothy Hingston - Emeryville CA, US

International Classification:

H04L 29/08

US Classification:

455414400

Abstract:

A system and method for automatically publishing electronic content from a wireless network (i.e., a wireless device) to a wired network, and vice versa. The system and method allows a user to create a publish electronic content (e.g., a video clip) across wired and wireless networks, from a mobile device, such as a mobile phone, to a web destination, and vice versa.

US Patent:

20080215669, Sep 4, 2008

Filed:

Mar 9, 2005

Appl. No.:

10/590781

Inventors:

William Gaddy - Milford PA, US
Chang Feng - Princeton NJ, US

International Classification:

G06F 15/16

US Classification:

709203, 709227

Abstract:

A system and method for establishing and maintaining two-way peer-to-peer network communication between clients who are behind symmetric firewalls/NATs is presented (FIG. ). In one exemplary embodiment, the inventive system discovery servers to ascertain the nature and port-mapping metrics of a given client's firewall/NAT. A systematic, multiple UDP Hole Punch method is employed for ports within a predicted range, and the source port of the first successful forwarding of an inbound packet is used by the client for subsequent outgoing traffic. Preferably, the method occurs symmetrically, thus ensuring that both clients' firewalls receive packets for which the source/destination ports and source/destination addresses fully-tuple-match with a previous client request originating from within the protected network, and therefore forwards packets to the respective clients successfully (peer-to-peer). In additional, the system and method allows monitoring, management, and prevention of connections by firewall/NAT administrators.

US Patent:

20120066596, Mar 15, 2012

Filed:

Feb 10, 2011

Appl. No.:

13/024700

Inventors:

Chang Feng - Belle Mead NJ, US
Asher Shiratzky - Tel-aviv, IL
Eyal Elyashiv - Ramat Hasharon, IL

International Classification:

G06F 3/01

US Classification:

715719

Abstract:

A video teleconferencing system which allows a mobile device to conduct teleconferences over fixed and mobile packet networks with end points with other mobile devices or a personal computer. The mobile device includes a user interface that displays a video image associated with a first participant. A selectable user interface element corresponding to a second participant video image may be displayed on the user interface and in response to selection of the selectable user interface element, a video image associated with the second participant may be displayed.

US Patent:

20150130952, May 14, 2015

Filed:

Nov 12, 2013

Appl. No.:

14/078087

Inventors:

- New York NY, US
Chang FENG - Belle mead NJ, US
Yuanyi XUE - Brooklyn NY, US

Assignee:

OOVOO, LLC - New York NY

International Classification:

H04N 17/00
G06K 9/66
G06K 9/62
H04N 19/44
G06K 9/46

US Classification:

348192

Abstract:

A method and system that assesses video quality of transmitted video packet signals suffering from packet loss and delay. This packet loss and delay can create freeze events, which are observed as a jerkiness while viewing the video. The system and method compares the frames in a video transmission to determine freeze events; extracts a set of features from the locations of the freeze events and decoded video frames; and maps the set of features into a video quality score using a neural network. The video quality score provides an assessment of the effects of irregular frame freezes due to packet loss or delay on the quality of the video.