Audio Video Adapter Unit with Automatic Device Detection and Profile Selection

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Solution Overview

Problem

Users have limited options to optimize audio or video quality when playing back recorded or live source material, as existing technologies like equalizers are complex, inconvenient, and often require expensive filters and multiple control inputs, and do not effectively adapt to different types of audio or video output devices.

Innovation Solution

An electronic unit with sensors and logic that detects input and output devices, allowing selection of stored modification profiles to enhance audio or video quality by altering frequency response, contrast, hue, and other visual characteristics, and automatically adapts to specific device combinations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional equalizers or EQ filters are used to modify audio source material, then frequency response characteristics can be adjusted to improve sound fidelity, but the device complexity increases and requires multiple control inputs and expensive internal filters

Engineering Contradiction:
Improvefrequency response characteristicsVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by using pre-stored modification profiles that contain predetermined frequency response adjustments. Instead of requiring complex real-time filter processing with multiple controls, the system selects and applies stored profiles corresponding to different output device types (headphones, speakers, etc.), thereby achieving frequency response optimization through parameter selection rather than complex physical filtering.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements preliminary action by pre-calculating and storing multiple modification profiles in advance. Each profile represents a complete set of frequency response adjustments optimized for specific output devices. This eliminates the need for complex real-time processing during playback, as the adjustments are prepared beforehand and simply selected and applied when needed.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If manual equalization controls are provided to users, then some control over audio selection is achieved, but the ease of operation decreases and becomes inconvenient for casual listeners

Engineering Contradiction:
Improvecontrol over audio selectionVSAvoidease of operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent applies self-service by implementing automatic detection of the output device type and automatic selection of the appropriate modification profile. The system includes detection logic that identifies whether headphones, speakers, or other output devices are connected, and automatically applies the corresponding pre-optimized profile without requiring user intervention. This maintains adaptability while dramatically improving ease of operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements universality by creating a single adapter unit that handles multiple output device types (headphones, speakers, various brands and models). The system stores multiple modification profiles and can automatically adapt to different device types, making one device universally compatible with many different output devices while maintaining optimal performance for each.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If fixed equalization settings are provided for specific music types, then simplification is achieved for the user, but the adaptability decreases and users are limited to provided options

Engineering Contradiction:
Improvesimplification for userVSAvoiduser options
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by storing multiple modification profiles with different frequency response characteristics, each optimized for specific output device types. The system can change parameters by selecting different profiles based on detected device characteristics, providing both simplification (automatic selection) and adaptability (multiple profiles for different devices and music types).

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the equalization settings dynamically adjustable based on detected conditions. The system can automatically select different profiles based on the output device type, and users can also manually select from available profiles or music-type-specific settings. This dynamic adaptability provides both ease of operation and versatility.

Inventive Principle:
Principle #15Dynamics

4Manufacturing precision

If no modification is applied to audio or video signals, then the device complexity remains low, but the perceived sound or visual quality cannot be improved or tailored to specific output devices

Engineering Contradiction:
Improveperceived sound or visual qualityVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies copying by storing digital representations (profiles) of ideal frequency responses and signal modifications for different output devices. Instead of requiring complex physical filters for each device type, the system copies the essential modification characteristics into stored profiles and applies them through digital signal processing. This achieves high perceived quality with relatively simple hardware.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent applies parameter changes by using stored profiles that contain predetermined signal modification parameters. The system changes audio and video signal parameters (frequency response, contrast, hue, etc.) by selecting and applying appropriate profiles for the detected output device, thereby improving perceived quality without requiring complex real-time processing hardware.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8675130B2Electronic adapter unit for selectively modifying audio or video data for use with an output device
Publication Date: 2014.03.18 THX LTD
  • US8675130B2 patent drawing
  • US8675130B2 patent drawing
  • US8675130B2 patent drawing

AI summary

A standalone or integrated electronic unit for selectively modifying audio or video data for use with an output device. The electronic unit has one or more audio or video inputs and one or more audio or video outputs for outputting the modified audio or video source material. The unit may include sensors, selectors, and/or logic for selecting from among a plurality of modification profiles and applies the selected profile to the audio or video source material before conveying it to the output device. The modification profile may be used to adapt an audio or video source for a specific type of audio or video playback or output device. For audio, the modification profile may be used to modify audio quality by altering the transfer function, and for video, the modification profile may be used to modify video quality by altering the visual characteristics of the video source signal.