Hard-disc Active-lamp constant-frequency-flickering control system and method

Abstract

The invention provides a hard-disc Active-lamp constant-frequency-flickering control system and method. The method includes the steps that reading-and-sporting action information of a hard disc is obtained through a hard-disc edge detection module, and the ACTIVVITY edge information of the hard disc is sent to a flickering frequency control module; the flickering frequency control module receives the ACTIVVITY edges of the hard disc, and all the ACTIVVITY edges of the hard disc are measured through a built-in counter; when the hard disc is located on the ACTIVVITY edges, control signals ACT-OUT are located at the low level, and the hard disc is located at a non-ACTIVITY edge, the control signals ACT-OUT are in the original state; the ACT-OUT level state is detected in real time through an output control module, and when ACT-OUT is located at the low level, LED lamps are controlled to be lighted on; when ACT-OUT is located at the high level, the LED lamps are controlled to be lighted off. Misjudging of users when the flickering frequencies of the LED lamps of all the hard discs are inconsistent is prevented.

Description

technical field [0001] The invention relates to the field of hard disks, in particular to a control system and a control method for an Active light of a hard disk to flicker at a fixed frequency. Background technique [0002] With the continuous improvement of server storage requirements, multi-hard disk installation is a major development direction today. ACTIVITYLED, as an indicator signal of hard disk activity, has an important prompt function for R&D personnel and customers. In the existing hard disk backplane design, the ACTIVITYLED indicator signal is directly output by the hard disk as the control signal of ACTIVITYLED; figure 1 shown. Different hard disks have the problem of diversity and inconsistency in the square wave frequency of the ACTIVITY LED signal, and there are situations where the flickering is too fast and the human eye cannot recognize it and the flickering rate is inconsistent, which affects the customer's judgment. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

Different hard disks have the problem of frequency diversity and inconsistency of the ACTIVITY LED signal square wave, and there are situations where the flickering is too fast and the human eye cannot recognize it and the flickering rate is inconsistent, which affects the customer's judgment

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