Remote User Interface Server for VoIP on Digital Televisions
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Solution Overview
Problem
Extending Voice over Internet Protocol (VoIP) services from a cell phone to other devices in a home network, such as a digital television, poses unique challenges, particularly in enabling seamless communication and call management across different devices.
Innovation Solution
Implementing a remote user interface (RUI) that binds with the Session Initiation Protocol (SIP) to enable VoIP calls between a cell phone and a digital television, using a remote UI server and client to forward incoming calls and manage call operations, with options for media transport via Real-Time Protocol (RTP) or UPnP Device Control Protocol (DCP), and integrating CalleriD for caller identification and presence information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VoIP services are extended to home network devices like digital televisions, then communication versatility is improved, but device complexity increases
Solution Approach 1:
The patent introduces a remote user interface server as an intermediary component that mediates between the VoIP telephony system and the digital television device. This server handles the complex SIP protocol processing, call management, and media stream routing, allowing the television to participate in VoIP communications without requiring complex native implementation on the TV itself.
Solution Approach 2:
The patent enables digital televisions to perform multiple functions beyond traditional viewing by integrating VoIP telephony capabilities. The television can make and receive phone calls, participate in video conferencing, and access telephony services through standard SIP protocols, thereby achieving multi-functionality that bridges entertainment and communication domains.
2Extent of automation
If SIP protocol is used for VoIP calls on home network devices, then call processing capability is improved, but protocol complexity increases
Solution Approach 1:
The remote user interface server acts as an intermediary that simplifies the SIP protocol handling for the television device. It manages the complex SIP message processing, call setup, teardown, and media stream control, allowing the television to benefit from advanced SIP call processing capabilities without needing to implement complex protocol logic locally.
Solution Approach 2:
The patent segments the VoIP functionality into separate components: the SIP protocol processing is handled by the remote user interface server, while the television handles only the simpler media reception and display functions. This segmentation allows complex protocol processing to be centralized in a dedicated server rather than distributed across all home network devices.
3Reliability
If media transport protocols like RTP and UPnP DCP are implemented, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The remote user interface server serves as an intermediary that manages the media transport layer by handling RTP stream routing and UPnP DCP device control protocol communication. This centralizes the complex media handling logic, ensuring reliable communication between VoIP endpoints and home network devices without requiring each device to implement complex media transport capabilities.
Data Source
AI summary
In one embodiment, a method for providing voice communications in a packet switched network protocol through a home network is provided, the method comprising: receiving, at a first home network device, an incoming call in the packet switched network protocol; notifying a second home network device of the incoming call; receiving an indication from the second home network device that the second home network device accepts the call; and forwarding the incoming call to the second home network device.