Combined Audio Video Device Single USB Cable Architecture
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Solution Overview
Problem
Conventional audio and video capture devices require multiple communications cables and enclosures for connection to host computers, leading to inefficient communication between video and audio modules, which necessitates signal routing through the host computer.
Innovation Solution
A combined audio and video processing device with USB hub functionality that transmits digitized audio and video signals over a single USB cable, incorporating an integrated USB hub, video processor for analog-to-digital conversion, and an audio processor for signal enhancements, allowing for efficient communication and processing of audio and video signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate external audio and video devices are used, then audio processing capabilities and video capture capabilities are provided, but multiple communication cables and enclosures are required, increasing device complexity
Solution Approach 1:
The patent combines separate audio processing functions and video capture functions into a single integrated device that connects to the host computer through a single USB connection. This merging eliminates the need for multiple separate external devices, multiple communication cables, and multiple enclosures, directly resolving the technical contradiction between providing comprehensive audio-video processing capability and reducing device complexity
Solution Approach 2:
The integrated device performs multiple functions simultaneously - it captures video signals, processes audio signals with various enhancements (noise reduction, echo cancellation, voice activation), and transmits both processed streams through a single USB connection. This multi-functionality allows one device to replace what previously required multiple specialized devices, resolving the contradiction between versatility and complexity
2Adaptability or versatility
If separate audio and video devices are used, then audio and video processing is provided, but communication between modules requires signal routing via the host computer, increasing loss of time
Solution Approach 1:
By merging audio processing and video capture into a single integrated device with shared processing resources and memory, the system eliminates the need to route signals through the host computer. The integrated architecture allows direct communication between audio and video modules within the device, significantly reducing signal routing time and improving synchronization
Solution Approach 2:
The integrated device acts as an intermediary that consolidates audio and video processing functions before transmitting to the host computer. Instead of the host computer mediating all communication between separate audio and video devices, the integrated device performs local processing and synchronization, reducing the time loss associated with host-mediated signal routing
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
This solution simplifies connectivity by using a single USB cable for both audio and video data transfer, reduces the number of required cables and enclosures, and enables real-time audio enhancements during video capture and encoding, preserving high signal fidelity and reducing noise.
Implementation Method 1
a video processor for converting an analog audio video input signal to a digitized video signal
Implementation Method 2
an audio processor for converting an analog audio input signal to a digitized audio signal
Data Source
AI summary
A combined audio video device includes inputs for receiving an audio video signal from a source. The device includes in one enclosure audio and video processor portions configured such that the audio and video processors use a common communications line for coupling electrical signals form the device to a host computer. The audio processor is operable to accept an audio signal and to provide audio enhancements to the audio signal. In one embodiment, the common communications line is a USB cable. In another embodiment, a USB hub is integrated into the device.