Confidential Data Masking in Voice and Image Processing
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Solution Overview
Problem
Existing methods for filtering confidential information from image and voice data in portable devices are inadequate, as they cannot accurately determine the presence of confidential information in voice data and do not provide feedback for improving determination accuracy.
Innovation Solution
An information processing apparatus that extracts character strings from image frames and converts audio data to text, using a database to determine the presence of confidential information and masking the data to prevent leakage, while updating the database for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only characters and images in display images are used to determine confidential information, then the determination process is simple, but voice-based confidential information cannot be detected
Solution Approach 1:
The patent combines multiple data sources (display image characters, display images, and voice audio) into a unified determination process. The determination unit integrates information from all three sources to comprehensively identify confidential information, resolving the contradiction by expanding detection scope without excessive complexity increase.
Solution Approach 2:
The determination unit is designed with multi-functionality to handle different types of data (visual and auditory). It universally processes various data formats through the same determination framework, enabling comprehensive confidential information detection while maintaining system coherence.
2Device complexity
If no feedback mechanism is implemented, then the system structure is simple, but determination accuracy cannot be improved
Solution Approach 1:
The patent implements a feedback mechanism where the result of confidential information determination is fed back to update the database. This allows the system to learn from previous determinations and improve accuracy over time, addressing the contradiction by enabling continuous improvement without overwhelming complexity.
Solution Approach 2:
The system performs self-improvement through automatic database updates based on determination results. The feedback loop enables the system to serve itself by continuously refining its determination capabilities without external intervention, maintaining simplicity while enhancing accuracy.
3Measurement precision
If comprehensive data processing is implemented, then detection accuracy improves, but processing time increases
Solution Approach 1:
The patent performs preliminary actions by pre-processing data (extracting characters from images, converting audio to text) before the main determination process. This preparation step organizes data in advance, enabling faster and more accurate confidential information detection during actual playback without significant time penalty.
Data Source
AI summary
Confidential information included in image and voice data is filtered in an apparatus that includes an extraction unit for extracting a character string from an image frame, and a conversion unit for converting audio data to a character string. The apparatus also includes a determination unit for determining, in response to contents of a database, whether at least one of the image frame and the audio data include confidential information. The apparatus also includes a masking unit for concealing contents of the image frame by masking the image frame in response to determining that the image frame includes confidential information, and for making the audio data inaudible by masking the audio data in response to determining that the audio data includes confidential information. The playback unit included in the apparatus is for playing back the image frame and the audio data.