Digital Wireless Intercom System Using Wired Backbone and Independent Frequencies
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Solution Overview
Problem
Digital wireless intercom systems using the ISM and UNII bands face limitations in communication distance and frequency interference, leading to suboptimal performance and restricted applications due to shadowed areas and signal quality issues.
Innovation Solution
A digital wireless intercom system where a master base station and remote base stations communicate wiredly via Ethernet or internet, using independent frequencies and time division wireless communication to expand communication distance and reduce interference, with internal memory buffers to manage signal delays and errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If digital wireless intercom systems use ISM and UNII bands, then high data transmission speed and audio quality are achieved, but communication distance is limited
Solution Approach 1:
The patent introduces a wired backbone network (Ethernet/internet) as an intermediary between base stations. Remote base stations connect to the master base station through this wired infrastructure, enabling wireless audio data to be transmitted over extended distances without being limited by radio wave propagation. The wired connection acts as a mediator that bridges the gap between wireless communication nodes.
Solution Approach 2:
The patent transitions from purely wireless communication to a hybrid architecture by adding a wired communication dimension. Base stations communicate audio data through both wireless channels (for belt packs) and wired channels (between base stations), creating a multi-dimensional communication system that overcomes the distance limitations of wireless-only approaches.
2Adaptability or versatility
If multiple devices use ISM and UNII bands simultaneously, then frequency bands are widely available, but frequency interference increases
Solution Approach 1:
The patent segments the communication system into multiple independent base stations, each operating on different frequencies. By distributing base stations throughout the service area and assigning them different frequency channels, the system divides the overall communication task into separate segments that can operate simultaneously without interfering with each other.
Solution Approach 2:
The patent implements local quality control by allowing each base station to operate independently on its own frequency within its local coverage area. This enables different parts of the system to have different frequency characteristics optimized for local conditions, reducing interference between adjacent areas while maintaining overall system versatility.
3Length of stationary object
If base stations are connected wiredly via Ethernet or internet, then communication distance is expanded, but system complexity increases
Solution Approach 1:
The patent leverages the universality of existing Ethernet and internet infrastructures. Instead of creating a proprietary wired communication system, the invention uses standard, widely-deployed networking technologies that are already present in most buildings. This approach expands communication distance while minimizing added complexity by reusing existing multi-functional network infrastructure.
4Object-affected harmful factors
If independent frequencies are used by master and remote base stations, then frequency interference is reduced, but synchronization complexity increases
Solution Approach 1:
The patent employs periodic synchronization actions where the master base station sends synchronization signals to remote base stations at regular intervals. This periodic exchange of timing information allows each base station to maintain its independent frequency operation while staying synchronized with the overall system, managing complexity through rhythmic, predictable synchronization cycles.
Data Source
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AI summary
The present invention provides a digital wireless intercom system including: at least one master base station; at least one remote base station connected to the at least one master base station wiredly through at least one of a local area network, a local area network infrastructure and an internet, the at least one remote base station transmitting and receiving a synchronization signal and a data signal of digital type with the at least one master base station; a plurality of first belt packs within a transmission radius of the at least one master base station, the plurality of first belt packs transmitting and receiving the synchronization signal and the data signal with the at least one master base station wirelessly; and a plurality of second belt packs within a transmission radius of the at least one remote base station, the plurality of second belt packs transmitting and receiving the synchronization signal and the data signal with the at least one remote base station wirelessly, wherein the at least one master base station and the at least one remote base station are driven with different independent frequencies based on a frequency interference situation, and wherein the synchronization signal and the data signal transmitted and received between the at least one master base station and the at least one remote base station have different starting timings of period