06459545 is referenced by 1 patents and cites 1 patents.

A data storage cartridge for a data storage disk drive has a marker including a latent illuminance material such as phosphor. A matte material on the cartridge or within the marker diffusely reflects charging light that is not absorbed by the latent illuminance material in the marker. This reduces noise and signal pollution in the light then emitted by the latent illuminance material. Accordingly, an accurate decay time can be determined. The decay time is checked to provide identification of different types or generations of data storage cartridges or provides a secure keying mechanism for authorized access to proprietary software.

Title
Use of matte materials to reduce signal pollution in cartridge detection circuitry
Application Number
9/524147
Publication Number
6459545 (B1)
Application Date
March 14, 2000
Publication Date
October 1, 2002
Inventor
Wayne A Sumner
Ogden
UT, US
Todd L Graves
Garland
UT, US
Agent
Woodcock Washburn
US
Assignee
Iomega Corporation
UT, US
IPC
G11B 23/03
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