Second Screen ACR Protocol for Home Network Interoperability
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Solution Overview
Problem
In the United States, there is no data broadcasting band in TV broadcasting signals, making it difficult to execute applications in response to TV program progress, especially for recorded content and internet-distributed media, and there is a need for coordinating content reproduction devices with second screen devices for ACR services across different vendors.
Innovation Solution
A standard protocol for coordination between content reproduction devices and second screen devices is proposed, including an identification request processing section, publishing section, and command execution section, which extracts signature data from content, generates queries, and publishes commands to operate identification requests, allowing for the execution of linked applications based on meta data received from an identification server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard protocol for coordination between content reproduction devices and second screen devices is established, then interoperability across devices from different vendors is improved, but device complexity increases due to the need to implement and maintain the protocol
Solution Approach 1:
The patent implements a universal coordination protocol that enables content reproduction devices and second screen devices from different vendors to interoperate through standardized interfaces. The protocol defines common command structures, event notification formats, and synchronization mechanisms that multiple device types can adopt, allowing a single device to communicate with various partners without custom integration for each vendor.
2Measurement precision
If signature data extraction and ACR service coordination is implemented across multiple devices, then content identification accuracy is improved, but loss of time increases due to network communication and data transmission
Solution Approach 1:
The patent implements preliminary action by having the content reproduction device extract signature data from content and prepare identification requests before the user needs information. The device proactively communicates with the ACR server, obtains identification results, and caches relevant metadata locally. This pre-computation approach reduces wait time when the second screen device requests content information, as the data is already prepared or can be quickly retrieved from local cache rather than requiring full network round-trips at the moment of user interaction.
Data Source
AI summary
The object of the present disclosure is to propose a standard protocol on a home network in using ACR services. A third aspect of the present disclosure includes the steps of using a content reproduction device to publish a command to operate an identification request processing section from a terminal device, using the terminal device to acquire and invoke the command published by the content reproduction device, using the content reproduction device to operate the identification request section in response to the invoking of the command by the terminal device and transfer the response to the terminal device, and using the terminal device to receive the transferred response and acquire and execute a linked application to be executed in step with the progress of the content based on related meta data included in the response and associated with the identified content. The present disclosure is applicable to a home network system using ACR services.