Augmented USB Connector Segmentation for Analog Audio and Data
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Solution Overview
Problem
Current USB connectors, such as Micro-USB, face limitations in simultaneously supporting analog audio and digital data transfer due to pin multiplexing issues, which restrict their functionality, especially in thin insulative housing structures and tight electrical termination tolerances required for high data speeds.
Innovation Solution
The development of an augmented USB connector with an additional set of electrical contacts positioned in alternative configurations, allowing for simultaneous data, power charging, and analog audio transfer while maintaining compatibility with existing Micro-USB standards, enabling the use of simple wire adapters and multiple accessories with a single USB micro jack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If pin multiplexing is used to reduce connector size, then connector dimensions are reduced, but functionality is restricted due to inability to simultaneously support analog audio and digital data transfer
Solution Approach 1:
The connector is divided into two separate contact sets: a first set of contacts configured for digital data transfer according to USB standards, and a second set of contacts configured for analog audio transfer. This segmentation allows each contact set to be optimized for its specific function without interference, enabling simultaneous operation of both digital and analog modes through the same connector housing.
Solution Approach 2:
The connector housing is designed to support multiple functions by incorporating both a first set of contacts for digital USB data transfer and a second set of contacts for analog audio transfer. The housing structure itself is universal, capable of mating with various devices while the internal contact configuration enables multiple operational modes (digital-only, analog-only, or simultaneous both) depending on the connected device requirements.
2Adaptability or versatility
If extra pins are added to enhance functionality, then connector versatility is improved, but physical tolerances and manufacturing complexity increase
Solution Approach 1:
Instead of adding extra pins to an existing USB connector configuration, the invention segments the contact structure into two distinct sets with different configurations. The first set follows standard USB pin assignments for digital data transfer, while the second set is specifically configured for analog audio contacts. This segmentation avoids the need to modify existing USB tolerances while adding new functionality.
Solution Approach 2:
The invention adds functionality by utilizing a different spatial dimension within the connector housing. Rather than extending the connector length or adding pins in the traditional USB configuration plane, the analog contacts are arranged in an alternative configuration that occupies a different dimensional space within the same housing envelope, thereby avoiding interference with USB termination tolerances.
3Device complexity
If pin multiplexing is used to accommodate more functions, then connector complexity is reduced, but electrical termination tolerance for high data speeds deteriorates
Solution Approach 1:
The connector structure is segmented into separate contact sets for digital and analog functions, eliminating the need for complex multiplexing switches and signal routing. Each contact set maintains simple, dedicated connections that are easier to manufacture with tight tolerances. The first contact set for digital USB data transfer preserves the simple pin-straight-through configuration required for high-speed data transmission without signal integrity degradation from multiplexing operations.
Solution Approach 2:
The invention extracts the analog audio functionality from the digital USB data path, removing the need for multiplexing switches and signal switching circuitry that would compromise electrical termination tolerance. By providing dedicated analog contacts separate from the digital USB contacts, the design eliminates the harmful effect of signal interference and maintains the simple, direct electrical paths necessary for high-speed USB data transfer.
Data Source
AI summary
A connector that is structured to electrically and physically connect with (i) a first connector type using a first set of electrical contacts, and (ii) a second connector type that uses the first set of electrical contacts and a second augmenting set of electrical contacts.