Handwriting Recognition Calculator for Formula Input

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Solution Overview

Problem

Existing calculators require users to perform step-by-step calculations and convert formulas, leading to inefficiencies and the need for additional paper and pen for recording results.

Innovation Solution

A calculator with a writing area that allows users to input handwritten formulas, which are then processed to output results directly, eliminating the need for step-by-step calculations and formula conversion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If users use traditional calculators to perform calculations, then calculation results can be obtained, but users need to perform step-by-step calculations and convert formulas manually, which reduces calculation efficiency

Engineering Contradiction:

Improvecalculation efficiencyVSAvoidtime for step-by-step calculation

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical manual conversion process with an optical recognition system. The optical character recognition module automatically identifies handwritten formulas and converts them into machine-readable format, eliminating the need for manual step-by-step calculation and formula conversion, thereby significantly improving calculation efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The calculator performs self-service by automatically processing handwritten formulas through optical recognition and calculation functions. The system autonomously converts handwritten input into computational operations and displays results without requiring user intervention for manual conversion or step-by-step calculation, saving time and improving efficiency

Inventive Principle:

Principle #25Self-service

2Productivity

If users use scientific calculators to calculate formulas, then calculation results can be obtained, but users still need to convert formulas into calculator input format and perform step-by-step calculations, which reduces calculation efficiency

Engineering Contradiction:

Improvecalculation efficiencyVSAvoidformula input complexity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent replaces the manual formula conversion process with an optical recognition system. The optical character recognition module automatically identifies and converts handwritten formulas into machine-readable format, eliminating the need for users to manually convert formulas into calculator input format, thereby simplifying operation and improving efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The optical recognition module serves as an intermediary between the user's handwritten formula and the calculator's processing system. It automatically translates the handwritten mathematical notation into a format that the calculation processor can understand and execute, bridging the gap between user input and machine processing without requiring manual conversion

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If users use flexible writing screen calculators, then writing area is provided, but calculation efficiency is reduced and writing experience is inferior to paper

Engineering Contradiction:

Improvewriting experienceVSAvoidcalculation efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent merges the advantages of paper writing and electronic calculation by combining a flexible writing screen with optical recognition and automatic calculation functions. The writing area allows handwritten input similar to paper, while the optical recognition and calculation modules automatically process the formulas, combining the ease of writing with high calculation efficiency

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the mechanical limitation of flexible writing screens with an optical recognition system. Instead of relying on the writing screen's physical properties for input, the system uses optical characters recognition to capture and interpret handwritten formulas, enabling both good writing experience and high calculation efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12332835B1Calculator capable of outputting results based on handwritten formulas

Publication Date: 2025.06.17 SHENZHEN XINGCHENGLIDA TECHNOLOGY CO LTD

AI summary

The present invention provides a calculator capable of outputting results based on handwritten formulas, wherein the calculator has at least one writing area, and can output the calculation results of the handwritten formulas in the writing area, wherein the setting of the writing area does not compromise the functional completeness of the calculator compared to a traditional calculator, and also does not change the operating habits when using the calculator as a traditional calculator, that is, the calculator provides different methods to obtain calculation results and allows verification of the calculation results obtained using an alternative method. This reduces the probability of errors in the calculation results caused by user mistakes when compared to verifying the calculation results using the same method.