公开(公告)号：DE69730916D1

公开(公告)日：2004-11-04

申请号：DE69730916

申请日：1997-07-15

Applicant: COMPAQ COMPUTER CORP

Inventor： LIN RICHARD S ,  MAGUIRE DAVID J ,  EDWARDS JAMES R ,  DELISLE DAVID J

IPC: G06F3/00 ,  G06F13/36 ,  G06F13/40

Abstract: A method for hot docking and hot undocking a portable computer and a docking station. The portable computer and docking station are physically coupled via a shared PCI bus and an expansion connector. Varying length pins in the expansion connector generate docking and undocking handshaking signals used by microcontrollers in the portable computer and docking station. The portable computer and docking station are functionally connected via low on-resistance switches located in the portable computer. Following a docking event, closure of the switches connects the portion of the shared PCI bus in the docking station with the PCI bus in the portable computer. When the switches are open, the PCI busses are functionally isolated. Both the portable computer and the docking station also include a local arbiter for arbitrating and granting bus control requests from devices coupled to the shared PCI bus. These local arbiters may be placed into an idled state by either the operating system (through system BIOS) or by the microcontrollers. The arbiters are idled during docking and undocking events in order to inhibit bus cycles on the PCI bus, thereby preventing cycles from being lost. Following completion of a hot docking or undocking event, Plug-and-Play system reconfiguration is carried out so that all system resources may be recognized and properly utilized by the operating system.

公开(公告)号：DE69730916T2

公开(公告)日：2005-02-03

申请号：DE69730916

申请日：1997-07-15

Applicant: COMPAQ COMPUTER CORP

Inventor： LIN RICHARD S ,  MAGUIRE DAVID J ,  EDWARDS JAMES R ,  DELISLE DAVID J

IPC: G06F3/00 ,  G06F13/36 ,  G06F13/40

Abstract: A method for hot docking and hot undocking a portable computer and a docking station. The portable computer and docking station are physically coupled via a shared PCI bus and an expansion connector. Varying length pins in the expansion connector generate docking and undocking handshaking signals used by microcontrollers in the portable computer and docking station. The portable computer and docking station are functionally connected via low on-resistance switches located in the portable computer. Following a docking event, closure of the switches connects the portion of the shared PCI bus in the docking station with the PCI bus in the portable computer. When the switches are open, the PCI busses are functionally isolated. Both the portable computer and the docking station also include a local arbiter for arbitrating and granting bus control requests from devices coupled to the shared PCI bus. These local arbiters may be placed into an idled state by either the operating system (through system BIOS) or by the microcontrollers. The arbiters are idled during docking and undocking events in order to inhibit bus cycles on the PCI bus, thereby preventing cycles from being lost. Following completion of a hot docking or undocking event, Plug-and-Play system reconfiguration is carried out so that all system resources may be recognized and properly utilized by the operating system.

公开(公告)号：SG71028A1

公开(公告)日：2000-03-21

申请号：SG1997002381

申请日：1997-07-07

Applicant: COMPAQ COMPUTER CORP

Inventor： LIN RICHARD S ,  MAGUIRE DAVID J ,  EDWARDS JAMES R ,  DELISLE DAVID J

IPC: G06F3/00 ,  G06F13/36 ,  G06F13/40

Abstract: A method for hot docking and hot undocking a portable computer and a docking station. The portable computer and docking station are physically coupled via a shared PCI bus and an expansion connector. Varying length pins in the expansion connector generate docking and undocking handshaking signals used by microcontrollers in the portable computer and docking station. The portable computer and docking station are functionally connected via low on-resistance switches located in the portable computer. Following a docking event, closure of the switches connects the portion of the shared PCI bus in the docking station with the PCI bus in the portable computer. When the switches are open, the PCI busses are functionally isolated. Both the portable computer and the docking station also include a local arbiter for arbitrating and granting bus control requests from devices coupled to the shared PCI bus. These local arbiters may be placed into an idled state by either the operating system (through system BIOS) or by the microcontrollers. The arbiters are idled during docking and undocking events in order to inhibit bus cycles on the PCI bus, thereby preventing cycles from being lost. Following completion of a hot docking or undocking event, Plug-and-Play system reconfiguration is carried out so that all system resources may be recognized and properly utilized by the operating system.

公开(公告)号：JPH1063383A

公开(公告)日：1998-03-06

申请号：JP19614197

申请日：1997-07-22

Applicant: COMPAQ COMPUTER CORP

Inventor： LIN RICHARD S ,  MAGUIRE DAVID J ,  EDWARDS JAMES R ,  DELISLE DAVID J

IPC: G06F3/00 ,  G06F13/36 ,  G06F13/40

Abstract: PROBLEM TO BE SOLVED: To attain hot docking/undocking in a portable computer and a docking station. SOLUTION: A long pin 147a, a middle pin 147b and a short pin 147c are provided in an extension connector 146 and used for reporting a connection state by length. The portable computer L is connected to an extension base E with a quick switch 113. When the switch is closed after a docking event, the docking station part of a PCI bus 112 is connected to a portable computer part. When the switch is opened, the PCT bus is isolated in terms of a function. The switch is controlled by a signal generated by a microcontroller 170a in the portable computer.