Patent ID: 7372654
Filing Date: 2008-05-13
Classification: G10K,G11B

Abstract:
1. A noise reduction system comprising: a disk storage unit including a disk capable of storing data and a head writing or reading said data to or from said disk; an active noise canceller generating a noise-canceling sound which reduces a noise generated by said disk storage unit; and a memory unit storing relationship between operational states and noises in said disk storage unit, wherein said disk storage unit outputs to said active noise canceller an operation data signal representing an operational state of said disk storage unit when it operates; and a said active noise canceller generates said noise-canceling sound by referring to said relationship stored in said memory unit based on said operation data signal outputted from said disk storage unit, and said active noise canceller detects a different noise other than said noise generated by the operation of said head, and determines said noise-canceling sound based on the characteristics of said different noise.