Browse Prior Art Database

A Method to notify Disk Existence on DVD/CD-ROM Drive

IP.com Disclosure Number: IPCOM000123587D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2005-Apr-05
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Sugawara, T: AUTHOR [+2]

Abstract

The computer system has removable storage device with using laser, for example, CD-ROM drive, DVD Drive, etc.. A disk medium for the device has surface of reflection.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 93% of the total text.

A Method to notify Disk Existence on DVD/CD-ROM Drive

   The computer system has removable storage device with
using laser, for example, CD-ROM drive, DVD Drive, etc..  A disk
medium for the device has surface of reflection.

   Most of the devices are difficult for users to know if a
disk is in it without opening a tray of the device, because the disk
is covered by an opaque bezel or a cover for safety reason of laser
when it is installed in the device.

   Our method enables for users easily to notify if a disk
is in the device.  The method consists of following:
  1.  The bezel of the device has a transparent window.  The
      window shall be at reflecting surface side of a disk.
  2.  The device has a mirror in it, in front of the window,
      and at reflecting surface side of a disk.  The mirror
      surface shall be directed to the bezel and the disk
      with an inclination of 45 degrees.
  3.  The disk side of the cover is matted for not reflecting
      light from the mirror.  Refer to the attached figure.

   If a disk is installed in the device, a ray of light from
outside go through the window, reflects at the mirror > the disk
surface > the mirror, and go back to the window.  A user looks light
in the window.  If no disk is in the device, a ray of light from
outside reflects at the mirror but is absorbed by the mat surface of
the cover.  A user looks dark in the window.

   By affecting the method, it is possible...