Wireless Haptic Input Device Motor Driver Integration

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Solution Overview

Problem

Conventional haptic feedback systems in electronic devices require motor driver chips to control vibration motors, leading to increased power consumption, hardware costs, and complex circuit layouts, which hinder miniaturization and precise fine-tuning of motor effects.

Innovation Solution

A haptic feedback method that eliminates the need for motor driver chips by using a second wireless communication module in the input device to directly drive the haptic feedback motor unit, with the module generating a wired motor driving signal from a wireless motor driving signal received from the electronic device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a motor driver chip is used to control the vibration motor, then the vibration motor can be driven reliably, but the device complexity and power consumption increase

Engineering Contradiction:

Improvevibration motor control reliabilityVSAvoidcircuit layout complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the motor driver functionality into the wireless communication module itself. The second wireless communication module in the input device includes a motor driver unit that is integrated within the module, eliminating the need for a separate motor driver chip. This integration reduces the number of components and simplifies the circuit layout while maintaining reliable vibration motor control.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The wireless communication module is designed to perform multiple functions: wireless communication, motor driver control, and signal processing. By making the module universal, the patent eliminates the need for dedicated separate chips for each function, thereby reducing device complexity and power consumption while maintaining control reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a motor driver chip is used to control the vibration motor, then the vibration motor can be driven reliably, but the power consumption increases

Engineering Contradiction:

Improvevibration motor control reliabilityVSAvoidinput device power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The motor driver functionality is merged into the wireless communication module, eliminating the need for a separate motor driver chip. This integration reduces the total power consumption of the input device by removing the additional power requirements of a separate chip and its associated circuitry, while maintaining reliable vibration motor control through the integrated motor driver unit.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If a motor driver chip is used to control the vibration motor, then cross-device compatibility is achieved, but the input device size increases

Engineering Contradiction:

Improvecross-device compatibilityVSAvoidinput device size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The motor driver unit is integrated within the second wireless communication module, eliminating the need for a separate motor driver chip. This integration significantly reduces the volume of the input device by removing the space required for the separate chip and its surrounding circuitry, while maintaining cross-device compatibility through the wireless communication capabilities.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If a motor driver chip is used to control the vibration motor, then general vibration control is achieved, but fine-tuning accuracy decreases

Engineering Contradiction:

Improvevibration control flexibilityVSAvoidvibration fine-tuning accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent implements local quality by providing dedicated motor control capabilities within the wireless communication module that are specifically optimized for the vibration motor. The motor driver unit includes specialized components and control logic that enable precise fine-tuning of vibration parameters, while the overall system maintains flexibility for different applications through the wireless communication interface.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12321520B2Haptic feedback method for electronic system and haptic feedback electronic system

Publication Date: 2025.06.03 SILICON INTEGRATED SYSTEMS CORP

AI summary

A haptic feedback method for an electronic system includes pairing an electronic device with a first wireless communication module and an input device with a second wireless communication module and a haptic feedback motor unit, inputting a control signal to the electronic device through the input device, and sending a wireless motor driving signal to the second wireless communication module of the input device by the first wireless communication module of the electronic device according to the control signal, so that the second wireless communication module generates a wired motor driving signal according to the wireless motor driving signal and directly transmits the wired motor driving signal to the haptic feedback motor unit to directly enable vibration of the haptic feedback motor unit.