Home Communication Gateway Analog Video Modulation
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Solution Overview
Problem
Existing home communication gateways struggle to flexibly integrate and combine digital IP terminals with analog door stations and home stations, requiring multiple components and unable to separate image and audio information on digital SIP telephone systems without using two gateways.
Innovation Solution
A home communication gateway that separates and modulates analog video signals onto a carrier frequency, allowing for bidirectional audio and unidirectional video transmission between door stations and IP terminals, enabling flexible integration of digital IP terminals with analog devices using a minimal number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a home communication gateway converts analog audio/video signals to digital signals and forwards them to IP terminals, then digital IP terminals can receive audio and video information, but video data streams cannot be displayed on analog home stations and additional gateways are required to separate video and audio transmission to different devices
Solution Approach 1:
The home communication gateway is designed to perform multiple functions: it converts analog signals to digital signals for IP terminals, and simultaneously converts digital video data streams to analog signals for display on analog home stations. This multi-functional design allows a single gateway to replace what would otherwise require multiple separate devices, enabling both analog and digital systems to be integrated without increasing overall system complexity
Solution Approach 2:
The gateway acts as an intermediary device between the analog home communication bus system and the digital IP network. It mediates signal conversion in both directions: analog-to-digital for audio and video transmission to IP terminals, and digital-to-analog for video display on analog stations. This intermediary function enables seamless integration of different system types while maintaining compatibility with existing analog infrastructure
2Adaptability or versatility
If analog door stations are combined with IP end devices to add video functionality, then video capability is enhanced, but existing gateways cannot display video data streams from IP devices on analog home stations
Solution Approach 1:
The gateway universally supports both analog and digital signal formats, enabling it to receive video data streams from IP devices and convert them to analog signals that can be displayed on analog home stations. This universal compatibility allows video functionality to be added to analog door stations without requiring separate conversion devices or complex configuration
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless integration of digital IP terminals with analog door stations and home stations, allowing for simultaneous audio and video transmission to different devices, reducing the need for multiple gateways and enhancing compatibility between analog and digital systems.
Implementation Method 1
A home communication gateway that separates and modulates analog video signals onto a carrier frequency, allowing for bidirectional audio and unidirectional video transmission between door stations and IP terminals
Data Source
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AI summary
In a domestic communication gateway (GW1) and a method for use in a domestic communication gateway (GW1) for communication between door stations (TS1, TS2) and resident stations (WS1) on a domestic communication bus (TK_Bus_In, TK_Bus_Out) having IP terminals (PC1, PC2, PC3, Tel1, Tel2, Tel3) in an IP network, where analogue audio and/or video signals are converted by a domestic communication bus (TK_Bus_In, TK_Bus_Out) into digital audio and/or video data streams and are forwarded by means of at least one IP network interface (IP_Ethernet) to at least one IP terminal (PC1, PC2, PC3, Tel1, Tel2, Tel3) and/or a digital audio data stream from an IP terminal (PC1, PC2, PC3, Tel1, Tel2, Tel3) is converted by an IP network into an analogue audio signal and is forwarded by means of a domestic communication bus (TK_Bus_In, TK_Bus_Out) to at least one door station (TS1, TS2) or resident station (WS1), the aim is to allow digital IP terminals of all kinds to be flexibly integrated and combined with analogue door stations and analogue resident stations given simultaneously minimum component use. This is achieved in that a digital video data stream from an IP terminal (IP-Cam1) is converted by an IP network into an analogue video signal and is forwarded by means of a domestic communication bus (TK_Bus_In, TK_Bus_Out) to at least resident station (WS1).