Abstract: A video display unit includes a built-in switched mode power supply and control means, responsive to the presence of one or more active sync signals (Hsync, Vsync), to switch on the display unit from the DPMS OFF mode, in which it consumes a minimum amount of power and to which it is switched in the absence of any active sync signal. Peak sensing circuitry detects that at least one sync signal is active, when switch is closed. A switch disconnects the SMPS controller from the start-up power source until the optocoupler is driven.

Abstract: A buffer circuit for use between a two-way open-collector bus line and a device capable of reading the status of the bus line and driving it low. The device has a single input/output terminal to which is connected a line of the buffer circuit. The buffer circuit is such as to distinguish between three logical levels on the line, and in particular between two logical low levels (U.sub.a, U.sub.b), which correspond to the device or an input buffer driving the bus line low. The input and output buffers are comprised by respective comparators. The reference voltage for the output buffer comparator lies between U.sub.a and U.sub.b, whereby to achieve the distinction therebetween. When the output buffer comparator detects U.sub.a, it causes the bus line to be driven low.

Abstract: A system and method for protecting an electrically-powered article, particularly a computer system such as a personal computer, from theft by rendering it effectively useless to anybody but the rightful user/owner. The personal computer includes a power disruption indicator (21) to which electrical power must be applied even when the computer is shut-down (switched off at switch 12). The continuous power is normally provided by means of a mains-supplied power unit (10). In the event of mains supply discontinuities longer than a predetermined short time period, as would be the case if the equipment is stolen, subsequent start-up of the computer is prevented until a theft protection password is provided by a potential user. A separate power source, such as a capacitor (20), is provided to power the power disruption indicator for shorter time periods, such as when moving the computer within premises, and thus obviate the need to enter the theft protection password upon such occasions.

Abstract: In a method and a device for preventing unauthorised access to a computer system comprising at least one processing unit (1) or like, a disk unit (3), a display (5), and a keyboard (7), use is made of a floppy disk (9). Information in the form of a personal identification code containing the name of an authorised user and an access code encrypted by means of a one-way encrypting function, and an authenticity code formed by a system access code and at least the personal identification code are recorded on the floppy disk.

Abstract: The present invention relates to a method and to a computer system arrangement for producing a dialogue between a central computer unit and at least one user unit. The user unit includes at least one display means and a memory means and can be connected to the central computer unit. The central computer unit includes a central memory means in which there is stored a software part, called the dialogue part, which is intended for data processing requested by the user unit. Information concerning the text and/or picture for presentation on the display means is pre-stored in the user unit memory means and separate user units may be of different types. The information transmitted from the central computer unit to the user unit during a dialogue session includes at least one first identifier which corresponds to a message to be transmitted, wherein the first identifier points out a presentation object which corresponds to the message in the user unit memory means.

Abstract: A system and method for achieving unitary installation of software at each time software is installed in user units of a distributed computer system. A specially adapted recipe is created from a general recipe which has fewer questions than the general recipe, or even no questions at all. This requires less information, or no information, from the user. This specially adapted recipe may either be used to achieve unitary installation of a program product in a plurality of mutually similar units of a computer system. The method enables a specially adapted installation recipe or configuration recipe to be created which can be re-used for manually, semi-automatically or fully automatically creating, installing or reconfiguring software. This reduces the total work in creating and/or installing a plurality of software programs or reconfiguring existing software while being aware of how these were created and/or installed or configured.

Abstract: A device for readily locking and unlocking a lock mechanism which is intended to hold a computer firmly locked to a unit. The lock mechanism is electronically controllable. The computer is provided with an electrical outlet, which can be connected to the lock mechanism, and a program for controlling the lock mechanism. The lock mechanism is intended to automatically lock the computer firmly to the unit when the computer is placed in position and also to normally hold the computer locked to the unit.

Abstract: A method and system for monitoring and changing the operation of a computer system which comprises a local area network or interconnected local area networks, each having a plurality of computers.

Abstract: The invention relates to an arrangement and to a method for revising selected data in a distributed data communication system, eg such data as a data program or document intended for a number of a plurality of destination devices (AEI, AEII, LSE2, LSE3) in the data communication system individually selected by an administrator, in which each destination device includes at least one memory unit (ME, LSM2, LSM3) for individual storage of data.

Abstract: An arrangement for an image scanning unit (1) includes a semiconductor package (2) so arranged as to generate electrical signals corresponding to an image incident upon the light-sensitive surface (2a) of the package and so arranged as to be connected to a circuit (5) by soldering its contact legs (2b) to the circuit board (5). Also present are an optical system arranged in a holder (3) for projecting the image to be scanned onto the aforementioned light-sensitive surface (2a) and a mounting plate (4) positioned between the semiconductor package (2) and the circuit board (5). Finally, devices (3a, 3b, 4a) are also present for joining together the holder (3) and the mounting plate (4) and for ensuring correct mutual alignment between the semiconductor package (2) and the optical system.

Abstract: The invention relates to an attachment for securing an end-part of a toothed belt-element (12, 14) to a machine element (10). The machine element (10) has a slot (18, 16) for receiving an end-part of the belt-element. Arranged on at least one of the opposing walls of the slot is at least one gripping bar (22, 28) which projects into the slot and the cross-sectional shape of which corresponds generally to the cross-sectional shape of a tooth-space formed recess (24, 30) in the end-part (14a, 12a) of the belt element.

Abstract: In a method for increasing the functionality of a computer program, use is made of a computer system comprising a user/terminal which via driver modules is connectible to a computer program. When the user/terminal requests execution of the computer program, the user/terminal is connected intially to a wrapper program via an additional driver module. After data exchange between the wrapper program and the user/terminal, the computer program is started from the wrapper program. Finally, the wrapper program is disconnected, and the computer program is connected to the user/terminal.

Abstract: The invention relates to a device for joining together toothed belt elements (16, 20). The device includes two flat parts (12, 24) which are mutually joined through the medium of a hinge-forming web-part (26). At least one flat part (24) has engagement elements (30, 32) for engagement with corresponding recesses in the belt elements (16, 20), and snap-in locking means (36, 38, 40, 42) are provided for locking the flat parts (12, 24) together.