Audio Processing Encryption Key Insertion for Stream Authorization
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Solution Overview
Problem
Existing audio processing devices lack a method to selectively authorize and process audio signal streams based on encryption, leading to unnecessary processing of unauthorized streams.
Innovation Solution
An encoding-locked method using a sensor, converter, and encoder to insert and check encryption keys in digital signal streams, ensuring only authorized streams are processed by embedding encryption keys during non-effective data periods or using look-up tables for encryption modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If audio processing devices process all audio signal streams without identification, then all streams are handled uniformly, but unauthorized streams are wasted processing resources and authorized streams cannot be selectively processed
Solution Approach 1:
The patent applies preliminary action by inserting encryption keys into audio signal streams before transmission. The receiving device checks for these encryption keys before processing, allowing it to identify authorized streams in advance and avoid wasting processing resources on unauthorized streams. This pre-identification mechanism enables selective processing based on authorization status.
2Reliability
If encryption keys are inserted into all audio signal streams, then authorized streams can be identified, but non-effective data periods are wasted with encryption key insertion
Solution Approach 1:
The patent applies local quality by inserting encryption keys only during non-effective data periods of audio signal streams, such as silence intervals or low-importance data segments. This localized insertion approach maintains authorization accuracy while minimizing the impact on the overall data stream, as the encryption keys are placed in regions that have less impact on audio quality when modified.
3Adaptability or versatility
If audio processing functionality is authorized without selective identification, then all streams receive processing, but paid functionality cannot be selectively applied to specific streams
Solution Approach 1:
The patent uses encryption keys as an intermediary mechanism to enable selective authorization of audio processing functionality. The encryption keys serve as a mediator between the audio signal streams and the processing device, allowing the receiver to identify which streams are authorized for paid functionality without requiring complex authorization management systems. The presence or absence of encryption keys provides a simple yet effective method for selective processing.
Data Source
AI summary
An encoding-locked method for audio processing for audio receiving device includes the following steps: inserting a first encryption key into a first digital signal stream so as to obtain a second digital signal stream, checking whether there is the first encryption key in a received digital signal stream so as to determine whether the received digital signal stream is the second digital signal stream, and when the received digital signal stream is not the second digital signal stream, no processing the received digital signal stream.