Terminal Device Content Signature Matching for Application Execution
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Solution Overview
Problem
In the U.S., the absence of a data broadcast band in TV broadcast signals and the use of CATV or IPTV, which only transmit video and audio, prevent the execution of applications in conjunction with content viewing, unlike in Japan and Europe where data broadcast signals are integrated with TV signals.
Innovation Solution
A terminal device and method that extracts signature data from content and generates queries to identify corresponding applications, allowing execution of applications in conjunction with content viewing, using a database cache to associate signature data with content identifiers and application identifiers, enabling metadata acquisition and application execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CATV or IPTV is used to distribute content, then content delivery is enabled, but data broadcast signals including application data are not transmitted to viewers
Solution Approach 1:
The patent introduces a terminal device as an intermediary that receives content from CATV/IPTV, extracts signature data from the content, queries a server to identify the content, and then executes the corresponding application. This mediator bridges the gap between content delivery systems that don't natively support data broadcast and the need for application execution.
Solution Approach 2:
The patent replaces the traditional data broadcast mechanism (which relies on embedded data signals in the broadcast stream) with a substitution approach: content is delivered via CATV/IPTV, signature data is extracted through content analysis, and application identification is achieved through server-based querying, eliminating the need for direct data signal transmission.
2Loss of information
If data broadcast band is formed in TV broadcast signal, then application data can be transmitted, but this method is not established in the U.S.
Solution Approach 1:
The patent creates a universal system that works across different content delivery platforms (CATV, IPTV, and traditional broadcast) by using content signature matching rather than platform-specific data broadcast mechanisms. The terminal device can identify content and execute applications regardless of the delivery method used.
Solution Approach 2:
The patent changes the fundamental parameter of how application data is transmitted: instead of embedding data in the broadcast signal, the system uses content-based identification through signature matching and server querying, making the solution adaptable to regions and platforms without data broadcast capability.
3Measurement precision
If signature data extraction and server querying is performed for every content, then accurate application identification is achieved, but processing time and network load increase
Solution Approach 1:
The system performs preliminary actions by extracting signature data from content and querying the server to identify the content and its associated application before the user needs to interact with it. This preparation ensures that when the user views the content, the application is already identified and ready for immediate execution.
Solution Approach 2:
The system implements a feedback loop where the terminal device sends query information to the server based on extracted signature data, receives identification results, and uses this feedback to execute the appropriate application. This closed-loop approach ensures accurate content identification while optimizing the process through iterative refinement.
Data Source
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AI summary
The present disclosure relates to a terminal device, a server device, an information processing method, a program, and a linked application supplying system, which are capable of executing an application in conjunction with progress of content being viewed at a user's home. The terminal device of the present disclosure is characterized in including a database cache unit that acquires and holds reference data which is held in a database of the server device, and a response generation unit that identifies content of an extraction source of signature data included in a second query in response to the second query transmitted from a separate terminal device belonging to a common network, by referring to the reference data in the database cache unit, and generates a second response to be returned to the separate terminal device, including at least the application identifier representing an application to be executed in conjunction with the identified content. The terminal device of the present disclosure can be applied to a TV receiver.