Wireless Bridge for PSTN Telephone Wireless Communication

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Solution Overview

Problem

Public Switched Telephone Networks (PSTN) are limited by fixed positions and handset cord lengths, restricting the range and convenience of telephone usage.

Innovation Solution

A wireless bridge device that connects a PSTN telephone to a wireless transceiver, using wireless communication modules and audio conversion to transmit signals between the console base and handset, allowing wireless communication without the need for physical proximity to a switching machine or cellular network.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a wireless bridge device is introduced to enable wireless communication, then the convenience and activity range are improved, but the device complexity increases

Engineering Contradiction:

Improveconvenience of telephone usageVSAvoidsystem structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces a wireless bridge device as an intermediary component between the PSTN telephone system and wireless transceivers. This bridge device includes audio conversion modules that convert between wired and wireless audio signals, enabling seamless integration without requiring changes to the existing PSTN infrastructure. The intermediary nature of this device resolves the contradiction by adding wireless functionality while maintaining compatibility with traditional systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The wireless bridge device is segmented into distinct functional modules: a first audio conversion module for incoming calls, a second audio conversion module for outgoing calls, and wireless communication interfaces. This segmentation allows each module to perform its specific function independently, simplifying the overall system architecture and making the complexity manageable through modular design.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If wireless communication modules and audio conversion modules are added to the bridge device, then the wireless communication capability is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvewireless communication capabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The wireless bridge device is designed with multi-functionality to justify its manufacturing cost. It can handle both incoming and outgoing calls simultaneously through separate audio conversion modules, support multiple wireless transceivers, and maintain compatibility with standard PSTN telephones. This universality distributes the manufacturing cost across multiple functional capabilities, making the device more cost-effective.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The audio conversion modules in the bridge device are designed to automatically convert audio signals between wired and wireless formats without requiring external processing or complex configuration. This self-service capability reduces the need for additional manufacturing components and simplifies the production process, thereby controlling manufacturing costs while maintaining versatile wireless communication functionality.

Inventive Principle:

Principle #25Self-service

3Reliability

If the first audio conversion module determines incoming signal reception and establishes wireless connection, then the communication reliability is improved, but the signal processing time increases

Engineering Contradiction:

Improvesignal transmission reliabilityVSAvoidsignal processing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The first audio conversion module continuously monitors and determines incoming signal reception status in advance before a call is established. By performing this determination action preliminarily, the system can quickly establish wireless connections without delay when calls arrive, thus improving communication reliability while minimizing signal processing time during actual call operations.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8983368B2Wireless bridge device and wireless communication system thereof

Publication Date: 2015.03.17 DEXIN CORP

AI summary

A wireless bridge device for communicating between a telephone of a public switched telephone network and a wireless transceiver includes a first connecting port, a second connecting port, a first wireless communication module and a first audio conversion module. The first connecting port is coupled to a console base of the telephone. The second connecting port is coupled to a telephonic handset of the telephone. The first wireless communication module outputs wirelessly an incoming signal and receives wirelessly an outgoing signal. The first audio conversion module is coupled between the first connecting port and the first wireless communication module. The first audio conversion module determines whether the incoming signal is received or not. If so, the first audio conversion will convert sound signals transmitted between the telephone and the wireless transceiver.