Ahmet M Eskicioglu

7039802, May 2, 2006

Jun 5, 1998

09/445132

Ahmet Mursit Eskicioglu - Indianapolis IN, US
Keith Reynolds Wehmeyer - Fishers IN, US
David Emery Virag - Indianapolis IN, US

Thomson Licensing - Boulogne-Billancourt

H04L 9/00

713156, 713168, 713171, 713175, 380255

A system conditionally establishes a communication channel between two devices only if one device is authenticated by the other device. Authentication of the second device by the first device involves sending a message to the second device; receiving, from the second device, the message encrypted using a private key of the second device and a digital certificate having a public key of the second device; decrypting the digital certificate to obtain the public key, using the public key to decrypt the message and comparing the decrypted message to the message originally sent to the second device.

7200752, Apr 3, 2007

Sep 24, 2001

09/961901

Ahmet Eskicioglu - Indianapolis IN, US

Thomson Licensing - Boulogne-Billancourt

H04L 9/00

713181, 713180, 380286

A method and apparatus for authenticating a message, said method including receiving, at a device, data representative of a first share, constructing a key using said first share and at least two additional shares, said at least two additional shares being stored at said device; and authenticating a message using said constructed key.

7224806, May 29, 2007

Sep 24, 2001

09/961835

Ahmet Eskicioglu - Indianapolis IN, US

Thomson Licensing - Boulogne-Billancourt

H04L 9/00

380286, 713181, 713180

A method and apparatus for managing access to a signal representative of an event of a service provider, including receiving said signal in a smart card, said signal being scrambled using a scrambling key, receiving, in said smart card, data representative of a first share; constructing said scrambling key using said first share and at least one additional share, said additional share being stored in said smart card; and descrambling said signal using said constructed scrambling key to provide a descrambled signal, wherein the step of constructing said scrambling key comprises calculating the Y-intercept of the line formed on said Euclidean plane by said first, and said at least one additional share.

7254236, Aug 7, 2007

Oct 6, 2000

10/089902

Ahmet Mursit Eskicioglu - Staten Island NY, US
Michael Scott Deiss - Zionsville IN, US
Jean-Louis Diascorn - Carmel IN, US
David Jay Duffield - Indianapolis IN, US

Thomson Licensing - Boulogne-Billancourt

H04N 7/167

380239, 380242

A method for enabling a security device to access a service protected by a conditional access system, wherein the service has associated with it two conditional access (CA) system identifier pairs. The device extracts the two CA identifier pairs and automatically identifies the pairs based on a predefined convention, for example, the order in which the identifier pairs are sent. The identifier pairs may comprise a conditional access entitlement control message identifier and a local entitlement control message identifier.

7492897, Feb 17, 2009

Jul 15, 1999

09/743653

Ahmet Mursit Eskicioglu - Indianapolis IN, US
William Wesley Beyers - Carmel IN, US
Izzat Hekmat Izzat - Carmel IN, US
Edwin Arturo Heredia - San Jose CA, US
Yousef Wasef Nijim - Carmel IN, US

Thomson Licensing - Boulogne Billancourt

H04N 7/167
H04N 7/16
H04L 9/00
H04L 9/30

380231, 380201, 380239, 380241, 380282, 713185, 726 28, 726 29, 725 6, 725 31

A method for managing access to scrambled broadcast or transmitted events received from a variety of service providers (including broadcast television networks, cable television networks, digital satellite systems). Each service provider employs the same public key for descrambling the access information message thereby permitting a user to access events from various service providers without changing the smart card. The method may also be expanded to manage access to a scrambled package of broadcast events.

7636846, Dec 22, 2009

Jun 5, 1998

09/445133

Ahmet Mursit Eskicioglu - Indianapolis IN, US

UQE LLC - Novato CA

H04L 9/32

713176, 726 9, 726 10, 380228

A method for managing access to a scrambled event, selected from an electronic program guide, of a service provider (including broadcast television networks, cable television networks, digital satellite systems, and internet service providers). Access to the event is only achieved if the descrambling key is obtained from a digitally signed message associated with the event in the electronic program guide. Authentication of the electronic program guide provider involves decrypting the digital signature using a public key of the guide provider.

7664268, Feb 16, 2010

Dec 9, 1998

09/581064

Ahmet Mursit Eskicioglu - Indianapolis IN, US
Mehmet Kemal Ozkan - Istanbul, TR

Thomson Licensing - Boulogne Billancourt

H04L 9/08

380278, 380286, 380200, 380201, 713193, 726 26

A method for providing conditional access (i. e. , managing access) to a received scrambled audio/visual (A/V) signal from a variety of sources by utilizing secret sharing for key recovery. Secret sharing eliminates the necessity to protect and transfer the complete descrambling keys between devices, because a portion of the key is stored in the device or a smart card coupled thereto.

8098820, Jan 17, 2012

Jan 9, 2009

12/319630

Ahmet Mursit Eskicioglu - Indianapolis IN, US
William Wesley Beyers - Carmel IN, US
Izzat Hekmat Izzat - Carmel IN, US
Edwin Arturo Heredia - San Jose CA, US
Yousef Wasef Nijim - Carmel IN, US

Thomson Licensing - Boulogne Billancourt

H04N 7/167
H04N 7/16
H04L 9/00
H04L 9/30

380231, 380201, 380239, 380241, 380282, 713185, 726 28, 726 29, 725 6, 725 31

A method for managing access to scrambled broadcast or transmitted events received from a variety of service providers (including broadcast television networks, cable television networks, digital satellite systems). Each service provider employs the same public key for descrambling the access information message thereby permitting a user to access events from various service providers without changing the smart card. The method may also be expanded to manage access to a scrambled package of broadcast events.