RVU Compliance Detection via SSDP Packet Monitoring
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Solution Overview
Problem
There is a need for quick and definitive methods to determine whether electronic devices, such as TVs and game consoles, are RVU compliant, as few devices currently support the RVU protocol, requiring installers to assess compliance during installations to choose appropriate connection methods and keep service costs low.
Innovation Solution
The implementation of a stand-alone testing device or modified cable/data network interface (CDNI) that utilizes the RVU messaging protocol's Discovery and Description phases to detect RVU capability by monitoring network communications for specific packet content indicative of RVU compliance, using Simple Service Discovery Protocol (SSDP) client functionality to transmit and receive data packets and examine their contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection methods are used to determine RVU compliance, then installer expertise requirements increase, but detection speed decreases
Solution Approach 1:
The system enables automatic self-detection of RVU compliance by the device under test through the testing device. The device automatically performs protocol analysis, packet monitoring, and compliance determination without requiring manual installer expertise, thus improving both accuracy and installation speed simultaneously.
2Reliability
If comprehensive protocol analysis is performed to ensure accurate RVU compliance detection, then device complexity increases, but detection reliability improves
Solution Approach 1:
The testing device extracts and monitors only the specific protocol packets and data structures relevant to RVU compliance (M-SEARCH packets, SSDP responses, device description XML). By focusing only on the essential compliance-indicating elements rather than analyzing all device communications, the system achieves high reliability while maintaining manageable device complexity.
3Measurement precision
If detailed packet content examination is conducted to definitively identify RVU capability, then processing time increases, but measurement precision improves
Solution Approach 1:
The testing device performs preliminary actions by monitoring for specific M-SEARCH packets and SSDP response patterns that are characteristic of RVU compliance. By looking for predetermined protocol signatures and data structure patterns in advance, the system can quickly identify compliant devices without needing to perform exhaustive analysis of all packet contents, thus reducing detection time while maintaining accuracy.
Data Source
AI summary
Devices and methods for quickly and definitively detecting whether or not a device is RVU capable. Aspects of the disclosed method and apparatus make use of the RVU messaging protocol, which include a Discovery phase and a Description phase. In one embodiment, a stand-alone testing device includes functionality that can test for the existence of RVU capability in a network connected device; in another embodiment, a cable/data network interface device may be modified to include such functionality. One detection method exams messages transmitted by a device during a Discovery phase for unique indicia of RVU compliance by the device. Another detection method reads a data structure from a device during a Description phase and looks for unique indicia of RVU compliance by the device. An installation method provides a process for quickly and definitively detecting an RVU compliant device.