Video Signal Processing Apparatus Automatic Analog Digital Recognition

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Solution Overview

Problem

There is a need for an apparatus and method to automatically determine whether an input video signal is analog or digital to ensure appropriate processing, as existing technologies struggle to differentiate between the two signals, especially with the transition from analog to digital broadcasting.

Innovation Solution

A video signal processing apparatus comprising a filter, digital and analog video processors, a distribution unit, a controller, and a selector to identify and process input signals as either digital or analog, utilizing an analog-to-digital converter for analog signals, and selecting the appropriate signal for display or storage based on flag signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single processing path is used for video signals, then device complexity is reduced, but the ability to handle both analog and digital signals automatically is lost

Engineering Contradiction:

Improveautomatic signal type recognitionVSAvoiddual processing path structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The video signal processing apparatus is divided into separate processing paths: a digital video processor for digital signals and an analog video processor for analog signals. A frequency filter is used to segment the input signal into high-frequency (digital) and low-frequency (analog) components, allowing each processor to handle its designated signal type independently while maintaining automatic adaptation through the controller and selector.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The apparatus achieves multi-functionality by incorporating both digital and analog processing capabilities within a single device. The controller automatically determines signal type and routes accordingly, enabling the device to universally handle both digital and analog video signals without requiring separate devices, thus improving adaptability while managing complexity through integrated design.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If manual signal type determination is used, then device complexity is reduced, but processing reliability is worsened due to incorrect signal handling

Engineering Contradiction:

Improvecorrect signal processingVSAvoidautomatic detection mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The apparatus performs self-service by automatically detecting signal type through frequency analysis and routing without manual intervention. The controller monitors the input signal characteristics, determines whether it is digital or analog, and autonomously selects the appropriate processing path, ensuring correct signal handling while eliminating the need for user input and improving reliability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system employs feedback mechanisms where the controller continuously monitors signal characteristics and adjusts processing routing accordingly. Flag signals from both digital and analog processors provide feedback to the controller, which then directs the video signal selector to route signals to the appropriate output destination, ensuring reliable processing through continuous monitoring and adjustment.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If analog signals are converted to digital, then compatibility with digital devices is improved, but signal quality may be affected by conversion losses

Engineering Contradiction:

Improvedigital device compatibilityVSAvoidsignal conversion quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The apparatus dynamically adjusts processing based on signal type detection. When an analog signal is detected, the system activates the analog-to-digital converter to convert the signal for compatibility with digital devices. The controller dynamically switches between direct digital processing and analog conversion paths, allowing the system to adapt to different input types while managing signal quality through appropriate conversion timing and processing.

Inventive Principle:

Principle #15Dynamics

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

Enables automatic recognition and processing of input video signals, ensuring compatibility with digital display and storage devices even when the signal type is unknown, allowing for seamless handling of both analog and digital inputs.

Implementation Method 1

a filter configured to pass the analog video signal and block the digital video signal

Methodology Applied

Scientific EffectFrequency filtering: Filter (electronic)

Implementation Method 2

an analog-to-digital converter configured to generate the second video signal by subjecting the analog video signal to an analog-to-digital conversion

Methodology Applied

Scientific EffectAnalog-to-digital conversion:

Data Source

PatentUS8760583B1Apparatus and method for processing video signal

Publication Date: 2014.06.24 3R GLOBAL

AI summary

Provided are a video signal processing apparatus and a video signal processing method capable of automatically recognizing whether an input video signal is an analog video signal or a digital video signal and processing the input video signal accordingly. According to the video signal processing apparatus and method, the input signal can be processed appropriately so that a display device can display a video or a video storage device can store a video data even when it is not known whether the input signal is an analog signal or a digital signal.