Display Device Fingerprint Matching for Event Timing
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Solution Overview
Problem
Existing display devices face challenges in providing event information at the correct time due to communication delays between the TV and server, especially during user operations like stop and rewind, leading to inaccurate timing of event information output.
Innovation Solution
A display device equipped with a signal processor to extract fingerprints from video and audio signals, a communicator to transmit these fingerprints to a server, and a controller to coordinate the output of event information based on received fingerprints, allowing for local matching and reducing reliance on server communication for timely event information delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the TV transmits content information to the server and waits for event information, then the server can provide customized event information, but communication delays occur between the TV and server
Solution Approach 1:
The system pre-processes and stores event information locally in the TV along with corresponding fingerprint data during content playback. Instead of waiting for server responses in real-time, the TV prepares event information in advance and stores it locally, enabling immediate output when conditions are met without communication delays.
Solution Approach 2:
Fingerprint data serves as an intermediary between the content and event information. The TV extracts fingerprints from the content being played and matches them against stored fingerprint-event pairs, enabling accurate timing of event information output without requiring continuous server communication.
2Ease of operation
If the TV continuously receives media time updates from the server, then event information can be provided, but the TV cannot recognize user operations like stop and rewind
Solution Approach 1:
The system uses fingerprint matching as feedback to determine whether to output event information. By comparing current content fingerprints with stored fingerprints, the TV can accurately determine the current playback state and recognize user operations like stop, rewind, or fast-forward, ensuring event information is output only at appropriate moments.
3Reliability
If the TV outputs event information based on server instructions with time delay, then event information can be provided, but the timing becomes inaccurate during content playback
Solution Approach 1:
Event information and corresponding fingerprint data are stored locally in the TV in advance. When the content being played matches the stored fingerprint, the TV immediately outputs the associated event information without waiting for server instructions, eliminating communication delays and ensuring accurate timing.
Data Source
AI summary
A display device is provided. The display device includes an outputter configured to output a content including a plurality of content parts, a signal processor configured to extract a first fingerprint corresponding to a first content part among the plurality of content parts of the content from at least one of a video signal and an audio signal constituting the content while the content is output, a communicator configured to transmit the first fingerprint to a server, and receive a second fingerprint corresponding to a second content part among the plurality of content parts of the content and first event information corresponding to the second fingerprint from the server, a storage configured to store the second fingerprint and the first event information, and a controller configured to control the outputter to output the first event information in coordination with the second content part of the content being output.