Broadcasting Receiver Host Device Resource Interface
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Solution Overview
Problem
Existing broadcast receiver systems lack efficient methods for interfacing with security cards to protect and transmit content using Internet Protocol (IP) over various transport protocols, limiting the protection and delivery of content across wired/wireless networks.
Innovation Solution
A method for interfacing between a host device and a security card that uses resource identifiers to determine supported communication modes, including A-mode and OOB modes, enabling efficient transmission of host resource information and protecting content through conditional access, while supporting multiple transport protocols and network capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cable security cards are used for content protection, then content security is improved, but compatibility with IP-based broadcast systems is worsened
Solution Approach 1:
The security card is enhanced to support multiple communication modes including A-mode (IP-based communication) in addition to traditional OOB modes, allowing it to function in both conventional cable systems and IP-based broadcast systems. The resource information interface enables the security card to identify and adapt to different host device capabilities, making it universally compatible across different network architectures while maintaining content protection functionality.
2Adaptability or versatility
If IP protocol is used for broadcast data transmission, then network versatility is improved, but integration with existing security card interfaces is worsened
Solution Approach 1:
A resource information interface acts as an intermediary layer between the IP-based broadcast system and the security card. This interface exchanges resource information messages that contain capability identifiers, enabling automatic adaptation and configuration. The intermediary translates between IP-based communication requirements and security card interface capabilities, simplifying integration without requiring complex custom interfaces for each protocol combination.
3Adaptability or versatility
If resource information interfacing is implemented between host device and security card, then system adaptability is improved, but communication overhead is worsened
Solution Approach 1:
Resource information including capability identifiers and support flags are exchanged and cached during the initial化和 configuration phase. The host device and security card establish their capability profiles in advance, storing this information for rapid reference during subsequent operations. This preliminary action eliminates the need for repeated capability negotiation, reducing communication overhead and initialization time while maintaining full adaptability.
Data Source
AI summary
A broadcasting receiver and method of interfacing resource information between a host device and a POD, sending host device resource information and obtaining host device resource information are disclosed. A POD sends a resource information requesting message. And a host device receives the resource information requesting message and responds with a resource information message including a resource identifier defined in a resource information table which includes information indicating whether the host device supports A-mode. Using a “conditional access” feature provided by a conventional cable security card, content received through any type of transport protocol (including an IP protocol) including a wired/wireless network can be protected and A-mode resource information can be systematically defined together with other-mode IP communication resource and the resource information of different modes can be integrated and transmitted to the host device.