Secure differential insertion of secondary content

US9788033B1 · kind B1 · utility

Assignee

• Cisco Technology, Inc. · US

Inventors

• Harel Cain · Jerusalem, IL
• Michal Devir · Jerusalem, IL
• Yaron Sella · Jerusalem, IL

Key dates

• Filing date: Jun 29, 2016
• Grant date: Oct 10, 2017
• Expiry date: Jun 29, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N21/845
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In one embodiment, a consumer device is assigned, at a broadcast headend to one of at least two groups of consumer devices, the two groups including a first group of consumer devices which is required to play content of a second type in order to view content of a first type and a second group of consumer devices which is not required to play content of the second type in order to view content of the first type. A video broadcast stream is sent from the broadcast headend to the consumer device, the video broadcast stream comprising content of the first type sent associated with a first packet ID (PID) and content of the second type sent associated with a second PID, wherein the first PID and the second PID are processed at the consumer device at the same time. An entitlement management message (EMM) is sent from the broadcast headend to the consumer device according to its group of consumer devices, the EMM being of one of a first type of EMM for devices of the first device type and a second type of EMM for devices of the second device type. An entitlement control message (ECM) stream is sent from the broadcast headend to the consumer device, the ECM stream including comprising thre…