Fluid mediated disk activation and deactivation mechanisms
First Claim
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1. A data storage device comprising:
- a substrate configured for rotating access;
a data storage medium capable of storing machine-readable data carried by said substrate;
a reservoir on said substrate adapted to contain a fluid;
a fluid responsive region on said substrate configured to receive fluid from said reservoir and upon receipt of said fluid to undergo a change;
anda pressure sensitive barrier between said reservoir and said fluid responsive region adapted to prevent flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier is below a first pressure difference and to permit flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier exceeds said first pressure difference;
wherein said pressure sensitive barrier is oriented to permit flow of fluid from said reservoir during at least one of angular acceleration or angular deceleration of the substrate.
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Abstract
Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, fluid-mediated modification of information or access to information is utilized. According to various embodiments, data storage devices designed for rotating access are described which include rotation-activated fluid control mechanisms.
145 Citations
26 Claims
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1. A data storage device comprising:
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a substrate configured for rotating access; a data storage medium capable of storing machine-readable data carried by said substrate; a reservoir on said substrate adapted to contain a fluid; a fluid responsive region on said substrate configured to receive fluid from said reservoir and upon receipt of said fluid to undergo a change; and a pressure sensitive barrier between said reservoir and said fluid responsive region adapted to prevent flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier is below a first pressure difference and to permit flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier exceeds said first pressure difference; wherein said pressure sensitive barrier is oriented to permit flow of fluid from said reservoir during at least one of angular acceleration or angular deceleration of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A data storage device comprising:
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a substrate configured for rotating access; a data storage medium capable of storing machine-readable data carried by said substrate; a reservoir on said substrate adapted to contain a fluid;
a fluid responsive region on said substrate configured to receive fluid fromsaid reservoir and upon receipt of said fluid to undergo a change; a pressure sensitive barrier between said reservoir and said fluid responsive region adapted to prevent flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier is below a first pressure difference and to permit flow of fluid from said reservoir to said fluid responsive region if the pressure drop across said pressure sensitive barrier exceeds said first pressure difference; a first radial channel segment extending radially outward from said pressure sensitive barrier and adapted to receive fluid from said reservoir; a connecting channel segment adapted to receive fluid from said first radial channel segment; and a second radial channel segment extending radially inward from said connecting channel segment adapted to deliver fluid from said connecting channel segment to said fluid responsive region. - View Dependent Claims (24)
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25. A data storage device comprising:
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a substrate a degradation-sensitive data storage medium on said substrate; a fluid reservoir capable of containing a fluid; a rotation activatable fluid release mechanism for controlling release of fluid from said reservoir to produce degradation of said data storage medium; a fluid receptacle adapted to receive fluid released from said reservoir; a first electrical contact on a first side of said fluid receptacle; and a second electrical contact on a second side of said fluid receptacle, said first electrical contact and said second electrical contact disposed so that, upon receipt of an electrically conductive fluid by said fluid receptacle from said reservoir, an electrical connection will be formed between said first electrical contact and said second electrical contact.
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26. A data storage device comprising:
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a substrate; a degradation-sensitive data storage medium on said substrate; a fluid reservoir capable of containing a fluid; a rotation activatable fluid release mechanism for controlling release of fluid from said reservoir to produce degradation of said data storage medium; a fluid receptacle adapted to receive fluid released from said reservoir; a first electrical contact on a first side of said fluid reservoir; and a second electrical contact on a second side of said fluid reservoir, said first electrical contact and said second electrical contact disposed so that, upon release of an electrically conductive fluid from said reservoir to said fluid receptacle, an electrical connection will be broken between said first electrical contact and said second electrical contact.
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Specification
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Current AssigneeThe Invention Science Fund I, L.L.C. (Intellectual Ventures LLC)
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Original AssigneeSearete LLC (Intellectual Ventures LLC)
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InventorsGoodall, Eleanor V., Ferren, Bran, Jung, Edward K. Y.
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Primary Examiner(s)Chen, Tianjie
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Application NumberUS11/124,923Publication NumberTime in Patent Office1,436 DaysField of Search369/273, 369/52.1, 369/53.41, 360/135, 360/97.01, 360/137, 360/133, 503/227, 720/719US Class Current720/719CPC Class CodesG11B 19/122 involving the detection of ...G11B 19/26 Speed-changing arrangements...
