Apparatus for eliminating, in each clock distribution amplifier of a clock distribution system, sequential pulse catch-up error due to one pulse "overtaking" a prior clock pulse. The apparatus includes timing means to produce a periodic electromagnetic signal with a fundamental frequency having a fundamental frequency component V'.sub.01 (t); an array of N signal characteristic detector means, with detector means No. 1 receiving the timing means signal and producing a change-of-state signal V.su...

An ISDN gateway (GW) for personal computers (H) comprises at least one circuit board resident in each computer for carrying out protocol conversion and other network interface functions. To improve bandwidth of the ISDN line while transferring voice or data, a B-channel allocation algorithm executed by the gateway (GW) and the ISDN line dynamically allocates bandwidth by monitoring traffic at each destination queue and responsively allocating or deallocating virtual B-channels. Bandwidth utiliza...

A hybrid mouse combining the usual x and y motion signals usually found in mice together with additional degrees of freedom, particularly a z-axis signal. The z-axis signal is generated by a roller whose turning motion is sensed by a shaft angle encoder, including a light chopper. Additional degrees of freedom may be provided by tilting the roller left and right to actuate switches. Actuation of each switch, together with pulse counts from the roller may be used to indicate pitch and roll. A yaw...

The invention generally relates to an arrangement for docking a portable computer (100) against a number of peripheral units. Provision is made, e.g. at the rear side of the computer, of a multi-pole docking connector (19) whose poles correspond signalwise to the poles of conventional peripheral connectors (118a-f) of the computer (100). At the same time, access to the peripheral connectors (118a-f) is maintained, optionally in the form of copies (18a-f), signalwise and with respect to type, so ...

A folding stand including two parallel supports joined by a folding brace for supporting a notebook computer, wherein the folding brace includes two bracing bars pivotably joined by a link and pivotably connected between the supports; the supports have a respective sloping top wall for supporting the notebook computer in a tilted position for comfortable operation and an elongated bottom opening for receiving one bracing bar when the folding brace is folded up to collapse the stand.

A method is described for compiling a source code listing into an object code listing and comprises the steps of: extracting a block of source code statements from a source code listings; mapping each source code statement in the block into a wide intermediate code (WIC) statement in object form, a WIC statement defining a series of machine actions to perform the function(s) called for by the source code statement; performing an initial approximate simulation of each WIC statement in a block and...

An input apparatus or keypad (14) for computers and networks is provided. The keypad (14) has a palm size housing (20) having an extended opening (30) in its top surface (28). An input or key assembly (32) mounted in the opening (30) has a number of keys (34) arrayed in a 6 by 4 matrix, for example, to which operator can access to input information. The housing (20) includes a processor for processing information input using keys into a corresponding signal, and a transmitter for transmitting th...

A portable computer includes a base and a top movably mounted on the base. A non-conductive transparent display layer is mounted in the top and includes a channel formed therein that contains layers of transparent conductive and transparent non-conductive materials. A cable is connected to the base. A cable extension is coupled to and extends from the cable. The cable extension is imbedded in the channel. An antenna is coupled to the cable extension and is imbedded in the channel.

An associative type computer capable of wirelessly coupling with a high density of computers of the same structure comprising a cube shaped casing surrounding elements such as CPU or memory IC 10 and input/output interface 14. Signal transmission elements 22, 24 for wirelessly coupling the input/output interface of an adjacent computer are disposed on the inside of each face of the casing. The signal transmission elements are connected to the input/output interface 14 of the inside of the casing...

An expandable keyboard with at least one keyboard sections stored in a nested manner inside a default keyboard such that the at least one keyboard sections can be extended in a telescoping manner from a housing of the default keyboard. The default keyboard comprises all the necessary keys to operate the computer so that the computer can be used even when the at least one keyboard sections is in a stored position. The expandable keyboard disclosed is particularly desirable for a portable computer...