Automobile Remote Control Device Using Frequency Shift Keying

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing remote control devices for vehicles face issues with multifunction buttons causing delays in acknowledgment signals, leading to user confusion and potential security risks, and have limited battery life due to inefficient communication protocols.

Innovation Solution

A remote control device utilizing simultaneous bidirectional transmission with frequency shift keying over a single channel, allowing quasi-simultaneous receipt of acknowledgment signals with control signals and reducing latency, and incorporating isolation to minimize interference, thereby enabling rapid function execution feedback and extended battery life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a multifunction button is used to control multiple remote functions, then the number of buttons on the remote control is reduced, but the acknowledgment signal transmission time is significantly delayed

Engineering Contradiction:
Improvenumber of buttonsVSAvoidacknowledgment signal transmission time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The patent implements periodic action by dividing the acknowledgment signal transmission into separate periodic cycles for each function. Instead of waiting for all functions to complete before transmitting any acknowledgment, the system transmits acknowledgments periodically as each function executes, using separate wake-up sequences for each function's acknowledgment cycle.

Inventive Principle:
Principle #19Periodic action

2Device complexity

If a single wake-up sequence is used for the complete control signal frame, then the communication protocol is simplified, but the acknowledgment of individual functions is significantly delayed

Engineering Contradiction:
Improvecommunication protocol structureVSAvoiduser feedback accuracy
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies segmentation by dividing the single wake-up sequence into multiple separate wake-up sequences, each dedicated to a specific function's acknowledgment. This allows the remote control to receive and process acknowledgments for different functions independently and simultaneously, rather than waiting for a single sequential acknowledgment cycle to complete all functions.

Inventive Principle:
Principle #1Segmentation

3Use of energy by moving object

If traditional bidirectional transmission is used, then battery life is optimized with spaced messages, but the user experiences delayed feedback and potential security risks

Engineering Contradiction:
Improvebattery lifeVSAvoidfeedback latency
Core Design Contradiction:
Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements periodic action by establishing separate periodic transmission cycles for different functions. Each function has its own wake-up sequence and acknowledgment timing, allowing the system to maintain optimized power consumption patterns while providing timely feedback for each function without requiring continuous high-power transmission.

Inventive Principle:
Principle #19Periodic action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables rapid and reliable execution feedback for multifunction buttons, reducing the risk of user error and extending battery life by eliminating latency in communication and minimizing interference.

Implementation Method 1

frequency shift keying of the command and acknowledgment signals exchanged

Methodology Applied
Scientific EffectFrequency shift keying: Phase Modulation

Data Source

PatentEP2455263B1Remote-control device for an automobile
Publication Date: 2013.07.17 DELPHI TECHNOLOGIES INC
  • EP2455263B1 patent drawingFigure 1A~4
  • EP2455263B1 patent drawingFigure 2A~5
  • EP2455263B1 patent drawingFigure 3

AI summary

The device (10) has a multifunction button (12) for controlling remote functions on a vehicle (20). A transmitter (17) transmits a control signal (TX DATA RK) of one of the remote functions, and a receiver (18) receives an acknowledgment signal (TX DATA UC) indicating the execution of the function. A multicolored LED (13) indicates reception of the acknowledgment signal. The transmitter and receiver are of duplex type and provided between the device and the vehicle, and use a single transmission channel for frequency shift modulation of control and acknowledgment signals. Independent claims are also included for the following: (1) a remote control system for a vehicle comprising a remote control device (2) a communication method for a remote control system.