Dual-Channel Calling System for Enhanced Information Exchange

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Solution Overview

Problem

Conventional telephone calls rely solely on voice channels, which are inefficient for exchanging information, limiting user interaction and coordination during calls.

Innovation Solution

Establishing a data channel in addition to a voice channel to facilitate the exchange of interaction information, such as graphical interfaces, audio, and control information, between terminal devices, enhancing information exchange efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If only voice channel is used for telephone calls, then the calling function is simple and reliable, but the information exchange efficiency is low

Engineering Contradiction:

Improveinformation exchange efficiencyVSAvoidchannel structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The communication system is segmented into two independent channels: voice channel for audio transmission and data channel for interaction information. This segmentation allows each channel to operate independently with optimized protocols, improving information exchange efficiency without compromising call reliability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent adds a data channel dimension to the traditional voice-only communication. By introducing this additional dimension, the system enables multi-dimensional information exchange (voice + text + images + control signals) while maintaining the original voice channel functionality

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If data channel is added to assist calls, then the information exchange efficiency is improved, but the device complexity increases

Engineering Contradiction:

Improveinformation exchange efficiencyVSAvoidchannel management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The data channel is designed with multi-functionality to handle various types of interaction information (text messages, images, control signals, coordination data) through a unified protocol. This universal approach reduces the need for separate handling mechanisms for different data types, thereby limiting complexity increase

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If interaction information is exchanged through data channel, then the user coordination capability is enhanced, but the loss of time for establishing additional channel is incurred

Engineering Contradiction:

Improveuser coordination capabilityVSAvoidchannel establishment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The data channel is established preliminarily during the call setup phase, before the actual communication begins. This preliminary action ensures that when interaction information needs to be exchanged, the channel is already available, eliminating delays during the communication process

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9794415B2Calling methods and devices

Publication Date: 2017.10.17 XIAOMI INC

AI summary

A calling method for use in a terminal configured to communicate with a device, includes: establishing a data channel with the device for assisting a call, when the terminal is conducting the call with the device through a voice channel; and exchanging interaction information with the device through the data channel, the interaction information being configured to assist a first user of the terminal and a second user of the device in coordinating and interacting when conducting the call.