Mode Packet Transmission for Data Link Integrity
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Solution Overview
Problem
Conventional data transmission systems face issues with data link integrity during mode transitions, leading to improper display or presentation of audio/video data until the receiving device fully switches modes, causing temporary instability and potential decryption failures.
Innovation Solution
The system transmits mode packets ahead of mode changes in blanking intervals, allowing receiving devices to anticipate and prepare for mode changes, ensuring seamless transitions and maintaining data integrity by using unencrypted mode packets that can be detected without decrypting the content data, and utilizing bridge devices to handle encryption protocol stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If mode change is implemented immediately without prior notification, then response time is reduced, but data link integrity deteriorates due to improper display or presentation of data during transition
Solution Approach 1:
The transmitting device sends mode packets containing mode change indicators before actually changing the data transmission mode. This allows the receiving device to anticipate and prepare for the mode change in advance, ensuring seamless transition without improper display or presentation of data, thus maintaining data link integrity while enabling timely response.
2Reliability
If encrypted data stream is used for security, then security is improved, but mode change detection becomes difficult because receiving device cannot detect mode changes without decrypting content data
Solution Approach 1:
The data stream is segmented into encrypted content data and separate unencrypted mode packets. The mode packets contain mode change indicators and are transmitted independently from the encrypted content data, allowing the receiving device to detect mode changes without needing to decrypt the content data, thus maintaining security while enabling easy mode change detection.
Solution Approach 2:
Unencrypted mode packets serve as an intermediary between the transmitting and receiving devices, carrying mode change information that can be detected without decryption. This intermediary mechanism allows mode change detection to occur independently of the encrypted content data stream, resolving the conflict between security and detectability.
3Reliability
If mode change notification is sent ahead of time, then data link integrity is improved, but transmission complexity increases due to additional mode packets
Solution Approach 1:
Instead of transmitting complete mode information packets, only essential mode change indicators are sent in the mode packets. This partial action approach provides sufficient information for the receiving device to detect and prepare for mode changes without the overhead of comprehensive mode data, thus improving data link integrity while minimizing transmission complexity.
Data Source
AI summary
Embodiments of the invention are generally directed to messaging to provide data link integrity. An embodiment of a method includes transmitting a data stream over a data link from a first device to a second device, the data stream including multiple frames, the data stream being transmitted in a first mode. The method further includes determining a data transmission mode change from the first mode to a second mode for the transmission of the data stream from the first device to the second device, generating mode packets, each mode packet including fields to define a plurality of mode elements, the fields of the mode packet being set to indicate the data transmission mode change, and transmitting the mode packets to the second device prior to implementing the data transmission mode change.