Landesk Software, Inc.

David Jensen

Mark E Howarth

James Jarman

In an exemplary method, a filter driver on a computer system receives notification of an event during which a display screen on a display device of the computer system should be blank. An example of such an event is a remote management operation being performed on the computer system. The filter driver receives messages that are directed to a display driver for the display device. The filter driver receives the messages before they are received by the display driver. Some of the messages may comprise a power on message that, if received by the display driver, would cause the display screen to be powered on. The filter driver discards each power on message that is received during the event so that the display driver does not receive any power on messages during the event.

Systems and methods for blanking a display screen on a display device of a computer system

A system for monitoring modem use in a computer system is disclosed. The system includes a computing device and a computer-readable medium that is part of the computing device or in electronic communication with the computing device. The computer-readable medium includes instructions for the system to implement a method for monitoring the system for modem use. The method starts a background application on the system. A communication port is monitored for communication data. It is determined whether the communication data is a modem instruction. If the communication data is a modem instruction, a notification is prepared to be sent to an administrative system. The notification is sent to the administrative system. The notification includes identification information.

Systems and methods for monitoring a modem in a networked environment

The 16-bit process receives synchronized data from a hooked data function. As memory becomes available in a shared memory buffer, the 16-bit process writes the synchronized data to the buffer. The 16-bit process then signals the 32-bit process that synchronized data is ready to be transmitted over the network. The 32-bit process reads the synchronized data, stores it in a send buffer to free the shared memory buffer, then signals the 16-bit process that the shared memory buffer has been read. The 32-bit process then sends the synchronized data out over the network. In this way, a 'thunk' that improperly releases the mutual exclusion semaphore is avoided. There can be more than one shared memory buffer, to allow the 16-bit process and the 32-bit process to read and write synchronized data to the shared memory buffers at the same time. The 16-bit process can use a callback function to ensure that data does not wait in the shared memory buffers for too long before it is ready by the 32-bit process and sent out over the network.

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Cedar Hills, UT, United States of America

David Jensen