Wireless Area Entertainment System for Narrow-Body Aircraft
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Solution Overview
Problem
Narrow-body aircraft face challenges in providing live audio broadcasts due to space and weight constraints, as existing entertainment systems are often heavy and bulky, limiting the ability to integrate advanced entertainment features like live satellite radio.
Innovation Solution
An area entertainment system incorporating a digital satellite radio receiver, electronic boxes, and a local area network (LAN) that connects these components, allowing for user selection of digital satellite radio signals and streaming video, while being compact and lightweight to accommodate narrow-body aircraft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cable distribution networks with amplifiers and attenuators are used, then signal distribution throughout the cabin is achieved, but device complexity and weight increase
Solution Approach 1:
The patent extracts the signal distribution function from the complex cable distribution network and implements it through wireless communication. The headend unit receives satellite signals and distributes them wirelessly to passenger seats, eliminating the need for traditional coaxial cable infrastructure, amplifiers, and attenuators while maintaining reliable signal distribution throughout the cabin.
Solution Approach 2:
The patent replaces the mechanical cable distribution system with a wireless communication system. Instead of using physical cables to transmit audio and video signals throughout the aircraft, the system uses wireless transmission from a headend unit to passenger seats, reducing device complexity and weight while maintaining signal distribution capability.
2Adaptability or versatility
If full audio and video entertainment systems with individual seatback displays are installed, then passenger entertainment options are enhanced, but weight and space requirements increase
Solution Approach 1:
The patent implements a universal entertainment system where a single headend unit provides multiple entertainment functions (audio broadcasts, video programming, internet access) to all passenger seats wirelessly. This multi-functional approach eliminates the need for separate audio and video systems at each seat, reducing overall system weight while maintaining comprehensive entertainment options.
Solution Approach 2:
The patent uses wireless signal transmission to create copies of entertainment content at each passenger seat without requiring physical duplication of entertainment equipment. The headend unit transmits audio and video signals wirelessly to multiple seats simultaneously, allowing each passenger to access the same entertainment content without individual hardware copies, thereby reducing system weight.
3Adaptability or versatility
If satellite antennas and headend equipment are installed for live television broadcasts, then live programming is available, but device complexity and space requirements increase
Solution Approach 1:
The patent merges the satellite reception function with the entertainment distribution function in a single headend unit. The headend unit receives satellite signals and simultaneously provides audio and video programming to passenger seats through wireless transmission, combining multiple functions into one device to reduce overall system complexity and space requirements.
Data Source
AI summary
An area entertainment system includes an antenna for receiving digital satellite radio signals, and an intermediate frequency (IF) down converter connected to the antenna for down converting the digital satellite radio signals. Electronic boxes are spaced throughout the area, and each electronic box includes at least one IF tuner in communications with the IF down converter.