USB-SCSI Interface Adapter for Legacy Peripheral Connectivity
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Solution Overview
Problem
Many modern computers lack PCI slots, and the production of PCI cards has decreased, rendering SCSI peripherals obsolete due to the lack of compatible interfaces and updated drivers, which prevents effective communication between these peripherals and modern computing systems.
Innovation Solution
A USB-SCSI interface apparatus and method that utilizes a programmable circuit board with firmware to convert USB signals to SCSI signals and vice versa, enabling communication between computing devices with USB ports and SCSI peripherals through a USB-SCSI interface, including a SCSI interface for connectivity and a power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PCI cards are used to enable SCSI communication, then SCSI peripherals can communicate with computers, but modern computers lack PCI slots and drivers are not updated
Solution Approach 1:
The patent introduces a USB-SCSI interface adapter as an intermediary device that bridges the gap between USB-based modern computers and SCSI peripherals. The adapter contains a USB interface for connecting to the computer, a SCSI interface for connecting to the peripheral, and conversion circuitry to translate between the two protocols, thereby enabling communication without requiring PCI slots or updated drivers.
Solution Approach 2:
The patent changes the communication interface parameter from PCI/SCSI to USB/SCSI by using a USB-based adapter. This parameter change allows the system to work with modern computers that have USB ports but lack PCI slots, while maintaining SCSI protocol compatibility through firmware conversion.
2Adaptability or versatility
If USB-SCSI interface is implemented, then SCSI peripherals become compatible with modern computers, but device complexity increases
Solution Approach 1:
The patent extracts the signal conversion function into a separate USB-SCSI interface adapter device, isolating the complexity from the main computer system. This allows the computer to remain simple while the adapter handles the complex protocol conversion between USB and SCSI.
Solution Approach 2:
The patent implements firmware on the adapter that copies and emulates SCSI protocol behavior over USB connections. This allows USB to mimic SCSI communication patterns, enabling SCSI peripherals to work with USB-based systems without requiring complex hardware modifications to the peripheral devices themselves.
Data Source
AI summary
An apparatus for controlling a small computer system interface (SCSI) peripheral via a universal serial bus (USB) port of a computing device is provided. The apparatus includes a programmable circuit board (PCB) having firmware encoded thereon. The firmware is configured to convert USB signals to SCSI signals and to further convert SCSI signals to USB signals. The apparatus also includes a power supply configured to provide power to the PCB. The apparatus further includes a SCSI interface coupled to the PCB and configured to receive a SCSI cable to provide connectivity to the SCSI peripheral. The apparatus additionally includes a USB interface coupled to the PCB and configured to receive a USB cable to provide connectivity to the computing device via the USB port of the computing device.