Mini DisplayPort Multi-Serial Port Connection Card
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Solution Overview
Problem
The trend of computer miniaturization has led to the decline of DB9 and DB25 serial connectors, posing a challenge for the management and control of industrial and business automation devices that rely on these standards, as they are no longer supported by modern computers, resulting in potential inconvenience.
Innovation Solution
A multi-serial port connection device and connection card that utilizes a Mini DisplayPort connector with 20 contacts to connect two DB9 serial signal I/O pins, allowing for compact design and compatibility with external devices via a cable, effectively replacing the space required by multiple DB9 connectors with a single Mini DisplayPort connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DB9 connectors are installed on a computer to support serial communication, then compatibility with industrial and business automation devices is maintained, but the space occupied on the computer increases significantly
Solution Approach 1:
The patent combines multiple DB9 connector functions into a single Mini DisplayPort connector. The connection card integrates two sets of DB9 serial signal I/O pins behind one Mini DisplayPort interface, allowing two external DB9 devices to be connected through a single compact connector on the computer, thereby reducing the occupied area while maintaining adaptability
Solution Approach 2:
The Mini DisplayPort connector is designed to serve multiple functions - it not only supports its original audio/video transmission capabilities but also provides serial communication functionality through the integrated DB9 signal I/O pins. This multi-functionality allows a single connector to replace multiple specialized connectors, reducing overall space requirements
2Reliability
If DB9 and DB25 serial connectors are used to ensure reliable serial communication, then compatibility with existing automation devices is maintained, but the device size increases and miniaturization is hindered
Solution Approach 1:
The patent introduces a connection card as an intermediary device that bridges between the compact Mini DisplayPort interface and the traditional DB9 connectors. This intermediary contains the serial signal transceiving control module and DB9 I/O pins, allowing reliable DB9-based serial communication while keeping the computer's external interface compact
Solution Approach 2:
The patent relocates the bulky DB9 connector functionality from the external computer interface to an internal connection card that extends outward. This dimensional reorganization allows the computer's main body to remain compact while still providing access to reliable DB9 serial communication through the extendable connection card with DB9 sockets
Data Source
AI summary
A multi-serial port connection device has a connection card and a cable. The connection card has a serial signal transceiving control module and at least one Mini DisplayPort connector. The serial signal transceiving control module has at least two sets of serial I/O pins compatible with DB9 connector standard. The two sets of serial I/O pins are connected to twenty contacts of the Mini Display Port connector. The cable has a plug, at least two DB9 sockets for the connection of two external electronic devices with DB9 connectors. The multi-serial port connection device can reduce the space occupied by connectors on the connection card.