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Method to enable electrical eject without consuming standby current

IP.com Disclosure Number: IPCOM000013519D
Original Publication Date: 2000-May-01
Included in the Prior Art Database: 2003-Jun-18
Document File: 1 page(s) / 57K

Publishing Venue

IBM

Abstract

Disclosed is the method to eject a media (tray) electrically from the device (CD-ROM drive device, DVD-ROM drive device, MO drive device, etc) even if the system turns off. Fig.1 shows the circuit for the media eject in the device. Marked as Active Area on Fig.1 shows the active circuit when the system turns on. Marked as Active Area on Fig.2 shows the active circuit when the system turns off. Both Vcc-A and Vcc-B are supplied from the system to the device. Vcc-B actives only when the system turns on. Vcc-A actives even if the system turns off. Fig.1 ; When the system turns on, the circuit in the active area only actives. When press the eject button, the controller controls the plunger circuit. Fig.2 ; When the system turns off, the circuit in the active area only actives. Pressing the eject button contols the plunger circuit directly.

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Method to enable electrical eject without consuming standby current

  Disclosed is the method to eject a media (tray) electrically from the device (CD-ROM drive device,
DVD-ROM drive device, MO drive device, etc) even if the system turns off.

Fig.1 shows the circuit for the media eject in the device. Marked as Active Area on Fig.1 shows the
active circuit when the system turns on. Marked as Active Area on Fig.2 shows the active circuit
when the system turns off. Both Vcc-A and Vcc-B are supplied from the system to the device. Vcc-B
actives only when the system turns on. Vcc-A actives even if the system turns off.

Fig.1 ; When the system turns on, the circuit in the active area only actives. When press the eject
button, the controller controls the plunger circuit.

Fig.2 ; When the system turns off, the circuit in the active area only actives. Pressing the eject
button contols the plunger circuit directly.

Active A rea

D

Active A rea

Vcc-B

V cc-B

V cc-B

V cc-B

V cc-A V cc-A

V cc-A V cc-A


Vcc-B


Vcc-B

S

S

D

S

D

S

D

G

G

G

G

C ontroller

C ontroller

Vcc-A

V cc-A

Plunger

Eject B utton

Plunger

Eject B utton

V cc-B

V cc-B

Fig.1

Fig.2

1

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