Information Processing Device Failure Diagnosis
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Solution Overview
Problem
Existing error detection methods in storage devices are ineffective when the logic circuit fails to interpret frames, making it difficult to specify the source of errors in the expansion device or coupling devices.
Innovation Solution
An information processing device with a processor that transmits signals to determine if a failure exists in the port, using a diagnosis device to switch transmission paths and diagnose failures between the coupling control device and the coupling devices, even when no response is received, by employing open address frames and alternate paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If loopback diagnosis is used to specify error sources, then error detection capability is improved, but the method becomes ineffective when logic circuits fail to interpret frames
Solution Approach 1:
The patent introduces an intermediary diagnostic device that inserts itself into the communication path between the expansion device and coupling devices. This intermediary performs frame interpretation and forwards processed frames, enabling diagnosis even when the original logic circuits fail to interpret frames correctly. The intermediary acts as a mediator that bridges the communication gap caused by logic circuit failures.
Solution Approach 2:
The patent segments the diagnostic function from the main logic circuits by using a separate diagnostic device. This segmentation allows the diagnostic device to independently perform frame interpretation and forwarding without being affected by failures in the original logic circuits. The diagnostic path is separated into distinct components: the expansion device, the diagnostic device, and the coupling devices, enabling targeted diagnosis.
2Measurement precision
If diagnosis device switches transmission paths to diagnose failures, then failure location specification accuracy is improved, but device complexity increases
Solution Approach 1:
The diagnostic device is designed with multi-functionality, serving both as a frame interpreter and as a transmission path switch. By combining these functions in a single device, the patent reduces overall system complexity compared to having separate components for each function. The diagnostic device can selectively perform frame interpretation, path switching, or both, depending on the diagnostic needs.
Solution Approach 2:
The diagnostic device acts as an intermediary that manages transmission path switching between the expansion device and coupling devices. By centralizing the path switching function in this intermediary device, the patent simplifies the control logic and reduces the complexity that would otherwise be distributed across multiple components. The intermediary coordinates path switching based on diagnostic requirements.
Data Source
AI summary
An information processing device includes a first port and a processor coupled to the first port and configured to transmit, via the first port, a first signal to a first device coupled to the first port, cause a second device coupled to the first port to determine whether a failure is present in the first port when the information processing device does not receive a first response signal in response to the first signal, and determine that the failure is present in the first device when the second device does not determine that the failure is present in the first port.