Stephen W Cheng

US Patent:

8055779, Nov 8, 2011

Filed:

May 10, 2007

Appl. No.:

11/747156

Inventors:

Stephen Cheng - Foster City CA, US
Pritham Shetty - Los Altos CA, US

Assignee:

Adobe Systems Incorporated - San Jose CA

International Classification:

G06F 15/16
H04N 7/173

US Classification:

709227, 709203, 709231, 709236, 725105, 725118

Abstract:

Methods, systems, and apparatus, including computer program products, for using data keyframes. In one aspect, a method includes storing a data keyframe transmitted as part of a live streaming broadcast; receiving a request from a client to join the live streaming broadcast in-progress; determining that the stored data keyframe was transmitted before the request from the client was received; transmitting the stored data keyframe to the client; and distributing streaming content associated with the live streaming broadcast to the client. Further, the data keyframe can be generated by a publisher of the live streaming broadcast. Distributing streaming content further can include storing a plurality of data keyframes transmitted as part of the live streaming broadcast and transmitting the plurality of stored data keyframes to the client before distributing streaming content associated with the live streaming broadcast to the client.

US Patent:

8392530, Mar 5, 2013

Filed:

Dec 18, 2008

Appl. No.:

12/338531

Inventors:

Srinivas Manapragada - Fremont CA, US
Stephen Cheng - Foster City CA, US
Kevin Streeter - San Francisco CA, US

Assignee:

Adobe Systems Incorporated - San Jose CA

International Classification:

G06F 15/16
G06F 15/173
H04N 5/232

US Classification:

709219, 709239, 3482113

Abstract:

Systems, methods, and computer program products permit communication between servers in a server system utilizing a proxy stream communicating over a connection between the servers. A first request for content is received, at a server, and a connection is created with at least one upstream server. At the server a name associated with the content at the upstream server is identified. A second request for the content is transmitted to the at least one upstream server, where the second request identifies the name. The content is then received at the downstream server.

US Patent:

20040013337, Jan 22, 2004

Filed:

Oct 11, 2002

Appl. No.:

10/269147

Inventors:

Ken Purchase - Mountain View CA, US
Martin McKenzie - Los Altos Hills CA, US
Lili Huang - Santa Clara CA, US
Stephen Cheng - Hudson OH, US
Frank Harris - Akron OH, US
Jason Ge - Maplewood MN, US
Dong Zhang - Akron OH, US

International Classification:

G02B006/12

US Classification:

385/014000, 359/499000

Abstract:

Waveplates formed of mesogen-containing polymers and planar lightwave circuits containing such waveplates. Polymers have sidechains containing mesogens such as biphenyl-containing groups. Polymers may have a glass transition temperature between 100 C. and 300 C., and polymers may be stretched in excess of 150% to increase birefringence of polymer and provide thin films. Waveplates formed of stretched polymer films may have high biaxial birefringence.

US Patent:

20080301315, Dec 4, 2008

Filed:

May 30, 2007

Appl. No.:

11/755611

Inventors:

Stephen Cheng - Foster City CA, US
David Simmons - Davis CA, US
Srinivas Manapragada - Fremont CA, US

Assignee:

ADOBE SYSTEMS INCORPORATED - San Jose CA

International Classification:

G06F 15/16

US Classification:

709231

Abstract:

Methods, systems, and apparatus, including medium-encoded computer program products for transmitting digital media streams. In one aspect, a computer-implemented method includes identifying and transmitting a sequence of frames in a digital video transmission, the sequence of frames comprising an initial frame and subsequent frames corresponding to the initial frame, the subsequent frames comprising data that incrementally updates the initial frame, and initiating a new transmission of the sequence of frames to a new device after sending one of the subsequent frames in the digital media transmission, the initiating comprising generating information to cause the new device to inhibit presenting the new transmission until after frames between and including the initial frame and the one of the subsequent frames have been received by the new device, and transmitting, to the new device, the information and the frames between and including the initial frame and the one of the subsequent frames.