A slitter attachment for roll former machines, which slits metal in a position forwardly of the feed table of the roll former machine and conveys it through the feed channels of the table to different laterally spaced portions of the rolls. Hinged by a lateral hinge pin to be raised out of position and lowered into engagement with the gear train of the roll former machine, the powered conveyor of the slitter has a laterally slidable support arm surrounded above and below by a cog belt. At the re...

A graphic terminal is disclosed using bitmaps to represent plural overlapping displays. Graphics software is also disclosed in which the overlapping asynchronous windows or layers are manipulated by manipulating the bitmaps. With this software, the physical screen becomes several logical screens (layers) all running simultaneously, any one of which may be interacted with at any time.

An improved quiz-game like educational apparatus, exhibiting entertainment-value qualities suitable for one or more players of virtually all ages, via a reference-library of subjects. A thin planar 61/2".times.10" housing, contains an elementary hard-wired or printed electrical-circuit, powered by a harmless drycell-battery. The operating panel is vertically divided into discrete question-terminals on the left, correspondingly scrambled answer-terminals on the right; preferably including at leas...

A system for overlaying a computer generated video signal on an NTSC video signal includes horizontal and vertical pulse processor circuits for generating a horizontal start signal and a vertical reset signal, respectively, in accordance with NTSC standards, and a clocking system for receiving the vertical reset signal and the horizontal start signal and for generating control signals to control the read out of video data from the video generator of a computer so that it is read out at an NTSC r...

A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relatively wideband signals. The electromagnetic spectrum available to the plurality of narrow-band signals is selectively shared with the electromagnetic spectrum available to the wideband signals by systematically separating the orthogonal codes an...

Method and apparatus for organizing data by overlaying a searchable database with a directory tree structure. The method includes generating the directory tree structure that includes nodes comprising a designated category for each node and branches comprising links between the nodes, and generating one or more pointers. Each pointer corresponds to a specific node and the pointer links the specific node to an item of data within the searchable database. All pointers associated with the specific ...

A programmable logic device (PLD) which includes a dedicated composable RAM array having a plurality of memory tiles. The PLD also includes an array of CLBs, wherein each of the CLBs in the array is coupled to a corresponding one of the memory tiles. The composable RAM array is accessed through the CLBs. That is, the input signals required by the memory tiles are routed through the corresponding CLBs. Similarly, the output signals provided by the memory tiles are routed out through the correspon...

Methods, apparatuses and systems directed to securing a wireless network environment from eavesdropping and other unauthorized activities. One implementation prevents or disrupts meaningful access to information contained in WLAN RF signals that escape from a given physical space during operation of the wireless network. One implementation utilizes overlay RF signals transmitted on one or more operating channels of the WLAN to overpower or mask the internal RF signals escaping from a defined sec...

The present invention provides a system and method for overlaying video from different video sources on a display device. The sources may include a primary video source that provides first image data in the form of a first video signal, and an overlay video source that provides second image data in the form of a second video signal and a fast blank signal. The system encodes the fast blank signal into the second video signal to form encoded image data. The fast blank signal can occupy one bit of...

In order to align the timing of an overlay base station to the timing of an existing base station, a sync unit is introduced into the system. The sync unit has a first receiver configured to receive a first signal, the first signal having a first CDMA channelization. The first receiver is configured to produce an indication of a timing of the first signal. The sync unit also has a second receiver configured to receive a second signal, the second signal having a second CDMA channelization. The se...