Receiving Device HTML Document Execution Control
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Solution Overview
Problem
In digital television broadcasting, the use of HTML documents for data broadcasting in the U.S. lacks the ability to set operation modes, leading to unintended processes occurring when transitioning between documents, which compromises user security and service management.
Innovation Solution
A receiving device and method that obtain and control HTML documents based on identifying information, allowing specific processes only when the document is from a server managed by the broadcaster, and limiting processes when the document is from an unmanaged server, ensuring secure and intended operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If HTML documents are used for data broadcasting in the U.S., then service implementation is simplified, but operation mode control and security are lost
Solution Approach 1:
The patent introduces an intermediary control mechanism (the receiving device's control unit) that mediates between the HTML document execution and the user's operational commands. This intermediary checks whether operational commands are intended for the broadcast service before allowing execution, thus maintaining security while enabling service functionality.
Solution Approach 2:
The patent applies local quality by differentiating the treatment of operational commands based on their destination. Commands directed to the broadcast service are allowed to execute, while commands directed to other applications or unintended targets are blocked. This selective execution maintains security without compromising legitimate service operation.
2Ease of operation
If HTML documents can be executed without operation mode control, then ease of operation is improved, but unintended processes occur compromising user security
Solution Approach 1:
The patent implements feedback by having the control unit continuously monitor and check the execution status and intended target of operational commands during HTML document execution. This feedback mechanism allows the system to detect and prevent unintended processes while maintaining smooth operation for legitimate commands.
Solution Approach 2:
The patent applies preliminary anti-action by checking the intended target of operational commands before execution occurs. The control unit preemptively blocks commands that would cause unintended processes or compromise security, while allowing legitimate commands to execute normally. This preventive approach maintains ease of operation for authorized actions while preventing harmful effects.
3Device complexity
If no operation mode control is implemented, then device complexity is reduced, but service management capability is lost
Solution Approach 1:
The patent extracts the essential control functionality from the HTML document execution process itself and places it in the receiving device's control unit. This separation allows the control mechanism to be implemented with minimal complexity while maintaining full service management capability, as the control logic is extracted and centralized rather than embedded throughout the system.
Data Source
AI summary
Disclosed herein is a receiving device for receiving AV contents, the receiving device including: an obtaining section configured to obtain a description document described in a program language for displaying contents from a server present on a network connected with the receiving device; a determining section configured to determine whether the obtained the description document is obtained from a first server managed on a broadcaster side broadcasting the AV contents; and a controlling section configured to control execution of the obtained the description document according to a result of determination by the determining section.