Insulated insert with high electric strength
Cathode ray tube display terminal having an enclosure for protection of a logic board
Insulated plug-in module
Galvanically separating coupling location for energy and/or signal transmission
Expandable data communication system utilizing hand-held terminal
Cartridge having improved electrostatic discharge protection
ApplicationNo. 330250 filed on 10/26/1994
US Classes:713/322, By clock speed control (e.g., clock on/off)713/324By shutdown of only part of system
ExaminersPrimary: Sheikh, Ayaz R.
Attorney, Agent or Firm
Foreign Patent References
International ClassG06F 001/32
AbstractA system for controlling the power consumption of an add-in PC card operating within a host computer. The host computer includes a power supply that provides all power used by the PC card. The PC card includes communication registers required for communication between the host computer and the PC card. The PC card also includes a microcontroller connected to an I/O subsystem and a multi-pin I/O connector. A first side of the multi-pin I/O connector is connected to the I/O subsystem and a second side is connected to a source of I/O signals external to the host computer. An external register module is connected to the microcontroller and communicates with the host computer. The external register module contains the communication registers. A status detector located on the PC card detects whether the I/O subsystem is processing I/O information, and supplies a status signal indicative thereof. A power management module is also located on the PC card and is connected to the status connector. The power management module receives the status signal from the status detector and supplies one or more predetermined power levels as a result of the status signal.
Field of SearchCurrent