# How Phones Use Your Voice History to Fix Your Typing

> Apple's patent for a system that improves text autocorrection by using a database of words the user has previously spoken into their device.

- **Patent:** US 9075783
- **Original title:** Electronic device with text error correction based on voice recognition data
- **Owner:** Apple Inc
- **Granted:** 2015
- **Status:** Active
- **Times cited:** 5
- **Field:** consumer_electronics, software, ai_ml

## What it does

This patent describes a way to make autocorrect smarter by linking it to your voice history. When you speak into your phone, the device records those words in a database. Later, when you are typing a text or email, the autocorrection engine checks that database to see if you are likely to be typing a word you have said before. If you make a typo, the system uses your personal vocabulary to guess the correct word, rather than just relying on a generic dictionary. It performs this correction automatically as you type, often triggered by a space character.

## What it does NOT cover

- Does not cover autocorrection systems that rely solely on static, pre-installed dictionaries.
- Does not cover voice-to-text transcription where the entire message is dictated rather than typed.
- Does not cover predictive text systems that only use typing history without incorporating voice input data.
- Does not cover hardware-specific keyboard designs or physical key mechanisms.

## The clever bit

The innovation is the cross-modal link between voice and text; it treats your microphone as a data source for your keyboard's predictive model, essentially teaching the phone how you talk so it can better understand how you write.

## Real-world examples

1. iOS QuickType keyboard suggestions
2. Personalized language models in modern smartphones
3. Dictation-assisted text prediction

## Why it matters

This patent addresses the frustration of generic autocorrect failing to recognize names, slang, or specialized vocabulary that a user frequently speaks. By personalizing the dictionary based on actual speech, it makes mobile communication more efficient. It reflects the industry shift toward context-aware computing where devices learn from user behavior to reduce input errors.

## Frequently asked questions

### What does How Phones Use Your Voice History to Fix Your Typing cover?

Apple's patent for a system that improves text autocorrection by using a database of words the user has previously spoken into their device.

### Who owns patent US 9075783?

Apple Inc owns this patent, granted in 2015.

### When does this patent expire?

This patent is expected to expire on July 7, 2035, when the invention enters the public domain.

### What is patent US 9075783 cited by?

This patent has been cited by 5 later patents that build on its ideas.

### What problem does this patent solve?

This patent addresses the frustration of generic autocorrect failing to recognize names, slang, or specialized vocabulary that a user frequently speaks. By personalizing the dictionary based on actual speech, it makes mobile communication more efficient. It reflects the industry shift toward context-aware computing where devices learn from user behavior to reduce input errors.

### What does this patent NOT cover?

Does not cover autocorrection systems that rely solely on static, pre-installed dictionaries.

**Full plain-English explainer:** https://patentbrief.org/patent/us/9075783/alexa-voice-service

**Original patent:** https://patents.google.com/patent/US9075783

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_Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._