Jonathan C Evans

7224798, May 29, 2007

Jul 30, 2003

10/629839

Howard G. Pinder - Norcross GA, US
Jonathan Bradford Evans - Atlanta GA, US
Anthony J. Wasilewski - Alpharetta GA, US

Scientific-Atlanta, Inc. - Lawrenceville GA

H04N 7/167
H04K 1/00
H04L 9/00
H04L 9/32
G06F 11/30
G06F 12/14
G06K 9/36
G06K 9/46

380239, 713189, 713193, 713194, 380200, 380201, 380202, 380210, 380211, 380212, 380213, 382232

The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device () that receives a clear stream and one or two encrypted streams, where the two encrypted streams have been encrypted by two different encryption schemes. The AIR device () identifies critical packets associated with the clear stream and subsequently allows two encrypted streams to pass and drops the critical packets of the clear stream. A multiplexer () then combines a percentage of the non-critical packets of the clear stream and the critical packets of the two encrypted streams to provide the partial dual-encrypted stream.

7496198, Feb 24, 2009

Dec 6, 2005

11/275051

Howard Pinder - Norcross GA, US
Jonathan Bradford Evans - Atlanta GA, US
Anthony J. Wasilewski - Alpharetta GA, US

Cisco Technology, Inc. - San Jose CA

H04N 7/167
H04L 9/32
G06F 11/30

380216, 380200, 380201, 380202, 380203, 713189, 713190, 713191, 713192, 713193, 382232

The present invention is suitable for use in a partial dual encrypted system. The present invention allows for two different decryption devices (e. g. , an incumbent, or first, set-top and an overlay, or second, set-top) to be located in a single system having an incumbent encryption scheme and a second encryption scheme. Each set-top is designed to decrypt the first or second proprietary encryption schemes, respectively. In accordance with the present invention, the second set-top utilizes a novel program map table to ensure that the second set-top chooses correct elementary streams in the partial dual-encrypted stream (i. e. , a combined stream including a first encrypted stream, a second encrypted stream, and a clear stream) for a desired program.

7805399, Sep 28, 2010

Apr 24, 2007

11/739161

Howard G. Pinder - Norcross GA, US
Jonathan Bradford Evans - Atlanta GA, US
Anthony J. Wasilewski - Alpharetta GA, US

G06F 17/00

7071041, 707607, 707610, 707827, 370506, 709236, 713162

The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device () that receives a clear stream and one or two encrypted streams, where the two encrypted streams have been encrypted by two different encryption schemes. The AIR device () identifies critical packets associated with the clear stream and subsequently allows two encrypted streams to pass and drops the critical packets of the clear stream. A multiplexer () then combines a percentage of the non-critical packets of the clear stream and the critical packets of the two encrypted streams to provide the partial dual-encrypted stream.

8396216, Mar 12, 2013

Jan 13, 2009

12/352712

Howard G. Pinder - Norcross GA, US
Jonathan Bradford Evans - Atlanta GA, US
Anthony J. Wasilewski - Alpharetta GA, US

H04N 7/167
H04L 9/32
G06F 11/30

380216, 380200, 380201, 380202, 713189, 713190, 713191, 713192, 713194

Systems and method for partial encryption are disclosed. One example method comprises: creating a program association table to include a first program number which identifies a program encrypted in accordance with a first encryption scheme, and a second program number which identifies the same program encrypted in accordance with a second encryption scheme; and creating a program map table for the same program to include first audio and video identifiers associated with the first encryption scheme and second audio and video identifiers associated with the second encryption scheme.

20040136532, Jul 15, 2004

Nov 21, 2003

10/719161

Howard Pinder - Norcross GA, US
Jonathan Evans - Atlanta GA, US
Anthony Wasilewski - Alpharetta GA, US
William Woodward - Lilburn GA, US

H04N007/167

380/239000

The present invention is suitable for use in a partial dual encrypted system. The present invention allows for two different decryption devices (e.g., an incumbent, or first, set-top and an overlay, or second, set-top) to be located in a single system having an incumbent encryption scheme and a second encryption scheme. Each set-top is designed to decrypt the first or second proprietary encryption schemes, respectively. In accordance with the present invention, the second set-top utilizes a novel program map table to ensure that the second set-top chooses correct elementary streams in the partial dual-encrypted stream (i.e., a combined stream including a first encrypted stream, a second encrypted stream, and a clear stream) for a desired program.

20150071300, Mar 12, 2015

Sep 12, 2013

14/025607

- Coppell TX, US
- San Jose CA, US
Jonathan EVANS - Dunwoody GA, US
Maynard Darvel HAMMOND - Lawrenceville GA, US
Zhifang J. NI - PLANO TX, US
Charaf HANNA - Lewisville TX, US

Cisco Technology, Inc. - San Jose CA
STMicroelectronics, Inc. - Coppell TX

H04L 12/823
H04L 12/873

370412

A system and method suited for improved overall data transmission having a hardware-based transceiver configured for transmitting upstream data with suppressed data packets. In TCP sessions between devices, a server seeks an “acknowledgement” that the downstream data transmission has been received by a client. Some data packets sent upstream may contain only TCP acknowledgement data and therefore may be combined with other purely TCP acknowledgement data packets in order to reduce the impact of the TCP acknowledgement packets on the overall upstream data throughput. In addition, this results in increased TCP performance in the downstream transmission direction as well because the algorithm enables replacing earlier arriving ACK packets with later arriving ACK packets which allows the device to send all TCP ACK information known to the suppressor at the earliest possible time.