Compaq Computer Corporation, Inc.

Hewlett-packard Development Company, L.p.

Paul R Fulton

Said S Saadeh

Richard A Stupek

Thomas J Hernandez

Scott C Farrand

Richard P Mangold

Arthur D Heald

Ronald A Neyland

Andrew J Miller

James E Barron

Dinesh K Sharma

Richard A Kunz

Darren John Cepulis

Patrick E Dobyns

Cheryl X Chen

Ronald G Ward

Mitchell R Wiley

Lih-Juan L Danielson

A cordless modem system where a mobile station unit (MSU) is located in the computer and a base station unit (BSU) is connected to the telephone line. A radio frequency (RF) link is developed between the two units to allow a cordless connection. A series of commands are used between the two units to allow the MSU to request a channel, the BSU to grant a channel, the BSU to notify of a ring, and the MSU to request the BSU to go off hook. In addition, there is preferably a command sequence to allow authorization of a particular MSU or BSU. There are two full duplex channels in each MSU and BSU. This allows multiple BSUS and MSUS to be utilized in a small area. Communications between the two units are secure based on address values for each 15 unit contained in the various commands.

Cordless modem system having multiple base and remote stations which are interusable and secure

A cordless modem system where a mobile station unit (MSU) is located in the computer and a base station unit (BSU) is connected to the telephone line. A radio frequency (RF) link is developed between the two units to allow a cordless connection. A series of commands are used between the two units to allow the MSU to request a channel, the BSU to grant a channel, the BSU to notify of a ring, and the MSU to request the BSU to go off hook. In addition, there is preferably a command sequence to allow authorization of a particular MSU or BSU. There are two full duplex channels in each MSU and BSU. This allows multiple BSUs and MSUs to be utilized in a small area. Communications between the two units are secure based on address values for each unit contained in the various commands. The communications software utilized in the computer is not even aware of the presence of the cordless connection. Two embodiments of the MSU are provided, one configured as an external data access arrangement (DAA) to be connected with laptop modems configured to utilize external DAAs, and in a second embodiment the MSU is incorporated with the modem hardware to provide a single, fully integrated unit. The BSU is a single preferably relatively small box which simply plugs into the telephone line.

In a telecommunication unit attached to a telephone line, power is provided by taking power from the telephone line when the unit is off-hook. When the unit remains on-hook, power is maintained to circuitry in the unit by a charge stored in a capacitor. When the capacitor's charge is reduced to a level no longer able to sustain operation of the unit, the unit is briefly taken off-hook, allowing the capacitor to recharge. Charge control of the capacitor is performed either by discrete circuitry or by a microcontroller, and further includes logic provisions preventing the unit from remaining off-hook for an unduly long period of time.

Telephone line sourced power supply

A remote console emulation for a computer system manager operates by transferring video screen images from system memory to the remote console and by inserting keystrokes from the remote console into the system keyboard controller. This emulation constitutes a marked improvement over prior art emulations because it does not require software on the host system.

System by which a remote computer receives screen images from and

A remote system reboot facility effects reboots by resetting the central processing unit within a local or host console and by effecting a bus reset. The remote system reboot facility is actuated by signals transmitted over an asynchronous line from a remote console to a computer system manager within the host. The computer system manager, and possibly also a keyboard controller associated with the computer system manager, generates or generate the reset signals. Effectively, cold booting is accomplished by the remote simulating the effect of power cycling on the host and warm booting is accomplished by emulation of 'control'--'alt'--'del' keystrokes.

Computer system having a remote reboot facility with both hard and soft

A system for innately monitoring a computer system. All address and data signals transferred over the system bus. Certain ones of the address signals are selected as related to the operating conditions of the computer system. A data filter selects data signals which correspond to the selected address signals and the selected address and data signals related to operating conditions of the computer system are then stored, either in a register if the selected address and data signals are composed of dynamic information requiring frequent status updates or in a first-in, first-out memory, when the selected address and data signals are composed of less dynamic information.

Innate bus monitoring system for computer system manager

A system manager for a computer system. The system manager transparently monitors signals transferred between computer system components along a system bus and stores objects related to the monitored signals in an object space. Information related to operating conditions within the system can then be provided from the object space. Later, the object space can be updated and the updated object space used to provide updated information regarding the operating conditions of the system.

Computer system manager for monitoring events and operating parameters

A power supply for a computer system manager, wherein the power supply has its own secondary power source operable when input power to the system manager no longer meets preset threshold values. The power supply functions in one of a discrete number of power modes depending upon the amount of energy available from either the computer input power or the secondary power source. The power supply switches to one of the group of power modes to conserve secondary power when the computer input power is no longer available. The power modes are controlled by a power mode controller which selectively directs power to discrete components of the system manager as a power conservation technique. The power mode controller always energizes the random access memory of the system manager in order to maintain data integrity. Upon detecting insufficient energy within the secondary power source, the power mode controller terminates all power flow from the power supply, including power flow to the random access memory, at which point the entire system has lost all data and configuration settings.

Growing community of inventors

Plano, TX, United States of America

Paul R Fulton