Multitype Media Device
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2005-Mar-20
Genduso, TB: AUTHOR [+3]
Disclosed is a media handling device, such as a disk drive, which supports access to 3-1/2 inch diskettes, 3-1/2 inch CD-ROM cassettes, and to PCMCIA-type removable memory cards. A unique head mounting assembly supports access to both 3-1/2 inch diskettes and 3-1/2 inch CD-ROM media with a single stepping motor and a single read/write head assembly.
Multitype Media Device
a media handling device, such as a disk drive,
which supports access to 3-1/2 inch diskettes, 3-1/2 inch CD-ROM
cassettes, and to PCMCIA-type removable memory cards. A unique head
mounting assembly supports access to both 3-1/2 inch diskettes and
3-1/2 inch CD-ROM media with a single stepping motor and a single
read/write head assembly.
The Figure is
a cross-sectional side view of the media device
8. The media is inserted through an open positioning door 10, which
is used to guide the media between an upper positioning plate 12 and
a lower positioning plate 14. Door 10, when closed as shown, also
keeps foreign objects from entering device 8 and provides a level of
security for the removable media. When the media is fully inserted,
door 10 automatically closes. Reopening door 10 to remove media, or
opening the door to install media, may be controlled by software
programmed to prevent unauthorized access. Positioning plates 12 and
14 are movable plates used to position the diskette and CD-ROM
cassette relative to a read/write head assembly 16, and a memory card
relative to a connector assembly 18, a zero-insertion-force connector
which engages the contacts provided at the inserted end of the memory
An insertion motor 20 rotates an insertion
roller 22 against
the case of the media as it is inserted, drawing the media into
device 8. Motor 20 and roller 22 are subsequently used to expel the
media from device 8.
components are mounted on a lower plate 24, which
also limits the downward motion of lower positioning plate 14. The
head assembly 16 includes two magnetic read/write heads 27 and 28 for
the diskette, as well as a single optical read head 29 for the
CD-ROM. A stepper motor 30 is used for track-to-track positioning of
head assembly 16. A capstan 32, driven by capstan motor 34, connects
to the disk media and causes it to rotate.
media is inserted through door 10, it is also inserted
between a pair of side rails 36, which are used to position the
rotatable media (diskette or CD-ROM) with respect to head assembly 16
and capstan 32. When a memory card is inserted, these rails 36 move
closer together to position the memory card with connector assembly
When the device is not in use, upper
positioning plate 12 and
lower positioning plate 14 are raised to the positions shown in the
Figure, being free to move in a prescribed manner toward lower plate
24. Connector assembly 18 is movable in the direction of arrow 42.
Upper read/write head 27 is pivotally mounted at a hinge 44 to allow
the media to be inserted between read/write heads 27 and 28.
When media is inserted into device 8 through pos...