Cordless Telephone Base Unit Data Format Conversion

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Solution Overview

Problem

Cordless telephone systems face increased costs and processing degradation due to the need for host device controllers and format conversions for audio and image data, which are not directly compatible between mobile and cordless handsets.

Innovation Solution

A cordless telephone system with a base unit connected to a wireless IP-terminal via a wireless LAN, which converts and transmits data formats to ensure compatibility and usability on cordless handsets without requiring new devices on the handsets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a host device controller (HDC) is provided in cordless telephone equipment to enable coupling with external storage apparatus, then data transfer capability is improved, but device complexity and manufacturing costs increase

Engineering Contradiction:

Improvedata transfer capabilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a base unit as an intermediary device between the mobile telephone (external storage apparatus) and the cordless handset. The base unit receives data from the mobile telephone via wireless LAN and forwards it to the cordless handset, eliminating the need for an HDC in the cordless handset itself. This mediator approach enables data transfer functionality while keeping the cordless handset simple and cost-effective.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If audio data format conversion is performed in the cordless handset to reproduce MP3 or WAV formats, then audio playback compatibility is improved, but processing capability degrades and costs increase

Engineering Contradiction:

Improveaudio playback compatibilityVSAvoidprocessing capability

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The base unit acts as a mediator that handles audio data format conversion. It receives audio data in various formats (MP3, WAV) from the mobile telephone, converts it to the appropriate format for the cordless handset's CODEC, and transmits the converted data. This eliminates the need for the cordless handset to perform complex format conversion, preserving its processing capability while maintaining audio playback compatibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The format conversion is performed in advance by the base unit before transmitting data to the cordless handset. By converting audio formats preliminarily at the base unit, the cordless handset receives data already in the correct format, eliminating the need for real-time conversion and preserving processing capability.

Inventive Principle:

Principle #10Preliminary action

3Speed

If image data is transmitted directly from mobile telephone to cordless handset without conversion, then data transfer speed is improved, but display compatibility degrades due to resolution differences

Engineering Contradiction:

Improvedata transfer speedVSAvoiddisplay compatibility

Core Design Contradiction:

SpeedVSAdaptability or versatility

Solution Approach 1:

The base unit serves as an intermediary that handles image data resolution conversion. It receives image data from the mobile telephone and converts it to the appropriate resolution for the cordless handset's liquid crystal display. This allows direct transmission from mobile telephone to base unit without requiring the cordless handset to perform conversion, maintaining data transfer speed while ensuring display compatibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Adaptability or versatility

If multiple cordless handsets are connected to base unit with HDC functionality, then data transfer versatility is improved, but manufacturing costs increase for each handset

Engineering Contradiction:

Improvedata transfer versatilityVSAvoidmanufacturing costs

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The base unit is designed as the intermediary device that incorporates the data transfer and format conversion functionality, rather than embedding such complex functionality in each cordless handset. This allows multiple handsets to be manufactured with simpler, more cost-effective designs while still enabling versatile data transfer capabilities through the base unit's mediation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9936058B2Cordless telephone equipment and cordless telephone system

Publication Date: 2018.04.03 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

Disclosed is cordless telephone equipment allowing various kinds of data stored in a mobile telephone to be stored in a cordless handset in a state usable therein, without provision of a new device thereto. A handset transfer-data conversion section that executes a predetermined conversion process according to a type of handset transfer-data stored in a storage section. Specifically, the handset transfer-data conversion section converts an audio format of ringtone data according to a use CODEC of a cordless handset. In addition, the handset transfer-data conversion section converts an image size of wallpaper data into a size reproducible in the cordless handset. Further, the handset transfer-data conversion section converts an image size of image data of the other party included in telephone directory data into a size reproducible in the cordless handset.