Multi-Voltage Isolated Logic Level Trigger Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Devices such as secure solid state drives (SSDs) require trigger inputs that are often incompatible with external trigger signals due to differences in voltage logic, specifically 3.3V or 1.8V, leading to incompatibility issues.
Innovation Solution
An apparatus with circuitry that automatically adjusts external trigger input voltage to be compatible with the attached system, using a rectification section to adjust polarity and current type, and an isolation section to provide a compatible logic level trigger signal, capable of handling a wide range of input voltages from -50V to +50V.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the SSD uses fixed 3.3V or 1.8V logic levels for trigger input, then the internal logic operation is stable, but it becomes incompatible with external trigger signals having different voltage levels
Solution Approach 1:
The patent introduces an intermediary voltage detection and adjustment circuit between the external trigger input and the SSD internal logic. This circuit detects the external voltage level and automatically adjusts it to a safe level before passing to the internal logic, while also providing over-voltage protection. The intermediary circuit acts as a buffer that translates incompatible voltage levels without exposing the internal logic to harmful voltages.
Solution Approach 2:
The patent dynamically changes the voltage parameter of the trigger signal based on the detected external voltage level. The circuit includes voltage detection means that measures the external trigger voltage and adjustment means that modifies the voltage level accordingly - either translating high voltage to low voltage or allowing direct passage when already compatible, thus adapting the parameter to ensure both compatibility and safety.
2Adaptability or versatility
If the trigger input circuitry automatically detects and adjusts to external voltage levels, then compatibility with various external devices is improved, but the circuit complexity increases
Solution Approach 1:
The patent implements self-service through automatic voltage detection and adjustment circuitry that operates without external control or configuration. The circuit automatically detects the external trigger voltage level and adjusts itself accordingly, eliminating the need for manual setup or complex control logic. This self-adjusting mechanism reduces the need for additional control circuits while maintaining high adaptability.
Solution Approach 2:
The patent creates a universal trigger input circuit that can handle multiple voltage levels and signal types through a single integrated design. The circuit combines voltage detection, adjustment, and protection functions into one multi-functional block that works with various external devices regardless of their specific voltage levels, reducing the need for multiple specialized circuits.
Data Source
AI summary
Various systems may benefit from interfaces for handling multiple types of inputs. For example, a device with a trigger input from an external device may benefit from an isolated logic level trigger that is capable of addressing multiple types and values of voltage. An apparatus can include an input configured to receive an external trigger input signal having a trigger input voltage. The apparatus can also include circuitry configured to automatically adjust the trigger input voltage to a value configured to be compatible with a provided attached system. A working range of the trigger input voltage can exceed a compatible working range of the provided attached system.