Multimedia Socket with Cable-Actuated Switching for Signal Termination
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Solution Overview
Problem
Existing multimedia sockets lack a mechanism to automatically switch between end and through configurations based on the connection status of the output cable, leading to potential signal reflections and installation errors, especially in antenna signal distribution networks.
Innovation Solution
A multimedia socket with an integrated switching device that is actuated by the connection of an output cable, allowing it to function as either an end socket with a terminating resistor or a through socket, ensuring correct signal termination and minimizing installation errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multimedia socket is designed to always have a terminating resistor connected, then signal reflections are minimized in end sockets, but it becomes impossible to use the same socket as a through socket in series connections
Solution Approach 1:
The patent implements a dynamic switching mechanism that allows the terminating resistor to be automatically connected or disconnected based on whether an output cable is present. The switching device changes the electrical state of the socket from terminated to unterminated (through) configuration dynamically, resolving the contradiction between reliable signal termination and adaptability to different socket configurations.
Solution Approach 2:
The socket automatically detects the presence or absence of an output cable and self-adjusts its termination state without external intervention. The switching device is triggered by the cable connection itself, causing the socket to serve itself by selecting the appropriate configuration (end or through) based on the actual installation scenario.
2Reliability
If different types of sockets are used for end and through configurations, then signal transmission is optimized for each specific application, but device complexity and the number of components increase
Solution Approach 1:
The patent makes a single socket type universal by equipping it with a switching device that can adapt its behavior to match either an end socket or a through socket. This multi-functionality allows the same physical socket to serve both purposes optimally, eliminating the need for different socket variants while maintaining reliable signal transmission in both configurations.
Solution Approach 2:
The socket dynamically changes its electrical characteristics based on the installation scenario. By using a switching device that responds to cable presence, the socket can transform from a terminated configuration to an unterminated through configuration, allowing one socket type to replace multiple specialized socket types.
3Reliability
If manual installation of terminating resistors is required, then precise control over signal termination is achieved, but installation errors and time consumption increase
Solution Approach 1:
The socket performs automatic termination management by detecting cable presence and activating the switching device accordingly. This self-service mechanism eliminates the need for installers to manually determine whether to install terminating resistors, preventing installation errors and reducing time consumption while maintaining reliable signal termination.
Solution Approach 2:
The switching device receives feedback from the physical state of cable connection and automatically adjusts the termination state. This feedback mechanism ensures that the socket is always in the correct configuration without requiring manual intervention, thereby improving ease of operation while maintaining signal transmission reliability.
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
The socket has a switching device (25) connected to an idle output-connection-unit (3) for a coaxial output cable in a switching position and switching over the cable, connected to the unit, in another switching position. A cable connection compartment is separated from a switching space by a base plate. An opening or hole is provided in the base plate and runs through an actuating- or triggering unit of an actuation device (125) of the switching device. The actuating- or triggering unit projects up to a region of the output-connection-unit.