Wireless Captioned Telephone Service System Direct Dialing

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Solution Overview

Problem

Current Wireless Captioning Telephone Service (WCTS) systems are inconvenient for deaf individuals who can speak, as they require indirect calling methods and complex processes, exposing their disability and causing battery consumption issues due to frequent communication with mobile networks, and lack effective call receipt mechanisms.

Innovation Solution

The implementation of a WCTS system that allows direct dialing between deaf and non-deaf individuals using separate voice and caption traffic paths, with a WCTS server system controlling terminal interfaces to manage voice and caption data transfer, reducing battery consumption and enhancing call receipt reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If deaf individuals use traditional WCTS systems to make calls, then they can communicate with non-disabled individuals, but they must go through indirect calling methods that expose their disability and require complex processes

Engineering Contradiction:

Improvecalling process simplicityVSAvoidprivacy of disability

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent introduces a relay center as an intermediary that handles call routing between deaf and non-disabled individuals. The relay center receives calls from non-disabled callers, retrieves stored communication preferences, and routes them to the appropriate deaf recipient without the deaf user needing to manually configure routing rules, thus simplifying the calling process while maintaining privacy.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary actions by pre-storing communication preferences and routing rules in the relay center before actual calls occur. Deaf users can pre-configure their preferences for different types of callers and situations, which are then automatically applied during call routing, eliminating the need for complex real-time decision-making and exposing minimal information during actual calls.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If deaf individuals use mobile VoIP programs to access CTS, then they can use their mobile terminals, but frequent communication with the mobile packet network causes battery consumption

Engineering Contradiction:

Improvemobile terminal compatibilityVSAvoidbattery consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The system implements periodic action by having the mobile terminal communicate with the packet network only at specific intervals - primarily when calls are initiated or received - rather than maintaining continuous communication. The relay center handles routine call routing and preference matching, allowing the mobile terminal to remain in low-power states between call events, thus reducing overall battery consumption while maintaining mobile compatibility.

Inventive Principle:

Principle #19Periodic action

3Adaptability or versatility

If deaf individuals use mobile VoIP programs, then they can access CTS, but they lack effective call receipt mechanisms and cannot identify callers

Engineering Contradiction:

ImproveCTS access capabilityVSAvoidcall receipt reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system implements feedback by having the relay center provide caller identification information to the deaf user's mobile terminal before calls are connected. The relay center queries the caller's number and communication preferences, then returns this information to the user, enabling informed decisions about whether to accept incoming calls. This feedback mechanism significantly improves call receipt reliability while maintaining CTS access capability.

Inventive Principle:

Principle #23Feedback

4Ease of operation

If non-disabled individuals want to call deaf individuals, then communication can occur, but they must call the relay center and wait for ARS or relay agent to answer, then enter the handicapped person's number using DTMF or dictate it

Engineering Contradiction:

Improvecalling process simplicityVSAvoidcall setup time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system performs preliminary action by pre-storing routing information and communication preferences in the relay center's database. When a non-disabled individual calls, the relay center automatically retrieves the appropriate routing information without requiring manual DTMF entry or waiting for agent assistance. This preliminary preparation of routing data dramatically reduces call setup time while maintaining ease of operation for both parties.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9100474B2System and method for providing wireless captioned telephone service

Publication Date: 2015.08.04 MEZMO CORP

AI summary

This invention is about WCTS Server System, WCTS Terminal and Method to provide Caption Telephone Service. By using voice in wireless and data network, WCTS Sever System provides Wireless Captioned Telephone Service, WCTS), which is one of Telecommunication Relay Service Types. This invention provides convenience by providing the same method of non-handicapped person with WCTS terminal when a deaf person who can speak is speaking on the phone with non-handicapped person. On the other hand, this invention also provides the method of direct dialing to a deaf person who can speak, not the method of indirect dialing that uses representative number of relay center.