Video Output Control Apparatus Encryption Enforcement
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Solution Overview
Problem
The existing video outputting apparatuses face the risk of outputting encrypted videos in a non-encrypted state due to the possibility of illegal control signals being inputted, compromising the security of video content.
Innovation Solution
A video output controlling apparatus and method that includes a first acceptance unit for encryption necessity signals, a video conversion unit for format conversion, and an output controlling unit to ensure that videos requiring encryption are only outputted in an encrypted state, with mechanisms to suppress or substitute non-encrypted frames if encryption is necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a video outputting apparatus converts video format and outputs encrypted video, then content security is improved, but the risk of illegal control signals causing unencrypted output increases
Solution Approach 1:
The patent segments the control signal acceptance into two separate routes: a first route for legal control signals and a second route for potential illegal control signals. The output control unit independently verifies encryption status regardless of which route the control signal comes from, effectively segmenting the verification process from the control signal input to prevent illegal signals from compromising security
Solution Approach 2:
The output control unit implements a feedback mechanism by continuously monitoring the encryption status of the converted video and comparing it with the encryption necessity. This feedback loop ensures that even if an illegal control signal attempts to disable encryption, the system detects the mismatch between the control signal intent and the actual encryption status, preventing unencrypted output of content that requires encryption
2Adaptability or versatility
If the apparatus accepts control signals from multiple routes, then operational flexibility is improved, but the possibility of illegal signal input increases
Solution Approach 1:
The output control unit acts as an intermediary between the video conversion unit and the output interface. It receives control signals from multiple routes but independently verifies the encryption status of the video before output. This intermediary position allows the system to maintain operational flexibility from multiple control routes while ensuring encryption enforcement through independent verification, blocking any control signals that would result in unencrypted output of protected content
3Productivity
If the conversion unit converts video without strict encryption verification, then processing speed is improved, but the likelihood of unencrypted output increases
Solution Approach 1:
The output control unit performs preliminary verification of encryption status before the video is outputted. By checking the encryption status in advance and comparing it with the encryption necessity, the system ensures that only properly encrypted video is outputted. This preliminary action maintains processing speed by not interfering with the conversion process itself while ensuring encryption compliance at the output stage
Data Source
AI summary
A video output controlling apparatus and a video output controlling method that can reduce the possibility that a video for which encryption is required may be outputted in a non-encrypted state are provided. A first acceptance unit (40) accepts a video and an encryption necessity signal indicative of whether or not encryption of the video is required via a first route. A second acceptance unit (44) accept a control signal via a second route different from the first route. A video conversion unit (46) converts, in accordance with the control signal, the video accepted by the first acceptance unit (40) into one of a video that is different in a format from that of the video and is in an encrypted state and a video that is different in a format from that of the video and is not in an encrypted state. An output controlling unit (48) performs control regarding whether or not the video is to be outputted based on the encryption necessity signal and whether or not the video after conversion by the video conversion unit (46) is in an encrypted state.