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| Number | Title | Issue Date |
| 4868732 | Pluggable power system having magnetic flux coupled power transformer and inductive filter components A regulated voltage electrical power system has a driving section and a driven section. The driving section includes a power transformer primary structure and a ripple current carrying, driving winding of a filter system for the smoothed outputs circuits ... | 09/19/1989 |
| 4868782 | Display terminal A display terminal of the type which is dependent on a remote processor for its operation and for its main data storage, comprising an interactive language interpreter (24) (e.g. for BASIC), terminal processor, local storage, display and a switch for swit... | 09/19/1989 |
| 4864486 | Plank and frame transformer A transformer structure includes two planar primary windings in a single plane with one primary winding on each leg of a core. The primary windings are connected in series or in parallel. The secondary structure includes a planar conductor structure about... | 09/05/1989 |
| 4855858 | Power regulator with overcurrent protection A regulator includes a switching transformer (TR) whose primary winding is divided into two halves through which current flows alternatingly via one respective switching transistor (Q1, Q2). The pulses on the secondary side of the transformer are rectifie... | 08/08/1989 |
| 4837845 | Method for rotating a binary image The present invention deals with rotating an n×n block of bits through an angle of +90 degrees or -90 degrees by a method including the steps of: storing the data in a matrix; separating the matrix into groups of bits of rotatable size; transposing first... | 06/06/1989 |
| 4814755 | Interactive display system A method for identifying a bounded area of a graphic display. The method uses the division of the display screen into nine areas then the central square is the correlation window. This window can be small, two or three pel width, or large if the applicati... | 03/21/1989 |
| 4811284 | Computer terminal system with memory shared between remote devices In a computer terminal system, a communications buffer is provided in a remote device to receive and transmit data and control information from and to the remote controller via the transmission link connecting the two. The controller owns the buffer and p... | 03/07/1989 |
| 4811205 | Pipeline display control apparatus with logic for blocking graphics processor accesses to shared memory during selected main processor graphics operations A graphics display apparatus employs a general purpose or main microprocessor providing general control of the apparatus including receiving high-level graphic orders defining a desired graphic image from a host processor and dedicated graphics microproce... | 03/07/1989 |
| 4803609 | D. C. to D. C. converter A d.c. to d.c. converter system converts a d.c. signal into a pulsating a.c. signal, which is applied to the primary of a power transformer. A transformer in which the primary and secondary windings are planar is employed to generate the output pulse sign... | 02/07/1989 |
| 4787030 | Data processing apparatus with fixed address space A CPU initializes pluggable adapters with built-in identity and conditional ROS and complies a Hardware First Level Interrupt Handler (HFLIH) table of identity against status register address and a Software First Level Interrupt Handler (HFLIH) table of i... | 11/22/1988 |
| 4764892 | Four quadrant multiplier A linear output multiplier has two pairs of differentially connected multiplying transistors (T13, T14 and T15 T16). One value Vx to be multiplied is supplied to the differential inputs of differential amplifier 1 and converted to corresponding differenti... | 08/16/1988 |
| 4760553 | Terminal system configuration tracing method and apparatus A terminal controller system is described wherein several feature cards are plugged into slots on a board, and I/O signal cables are connected between cards and/or remote multiplexors or terminals. A special purpose card identification (ID) bus is driven ... | 07/26/1988 |
| 4758941 | MOSFET fullbridge switching regulator having transformer coupled MOSFET drive circuit An FET full bridge regulator has a driving transformer for the gates of the power FETs of the regulator, and a driving circuit for the primary of the driving transformer, the driving circuit including a full bridge formed by first and second sets of drivi... | 07/19/1988 |
| 4755940 | Transaction security system An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing centers. Users of the system are issued with intel... | 07/05/1988 |
| 4747050 | Transaction security system using time variant parameter An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing centers. Users of the system are issued with intel... | 05/24/1988 |
| 4736423 | Technique for reducing RSA Crypto variable storage A technique for reducing RSA (Rivest, Shamir and Adleman algorithm) cryptovariable key from 1200 bits (400-bit public key, 400-bit secret key and 400-bit modulus) to 106 bits makes feasible the storage of the RSA algorithm parameters on current magnetic s... | 04/05/1988 |
| 4736309 | Data display for concurrent task processing systems A method and apparatus for automatically changing the display in overlapping rectangular viewport areas of a display screen of a digital display apparatus and in which each viewport area is assigned a different priority level. The method includes the step... | 04/05/1988 |
| 4728945 | Tabulating system The described embodiment provides listing control on a cathode ray tube (CRT) display for simultaneously drawing horizontal and vertical grid lines within a square box displayed on the CRT screen by moving a cursor to the intersection point of these grid ... | 03/01/1988 |
| 4725828 | Color display apparatus and method of coding a color image The invention provides a display apparatus for producing a color image in which the color of each picture element is defined by the intensities of component red, blue and green primaries and is coded as a binary number having r bits defining 2r... | 02/16/1988 |
| 4725829 | Automatic highlighting in a raster graphics display system In an interactive graphics display system in which pels in a frame buffer are mapped to the display screen of a raster display device, a method of automatically highlighting and de-highlighting graphic segments as a cursor is moved across the display scre... | 02/16/1988 |
| 4698779 | Graphic display with determination of coincidence of subject and clip areas A method of determining the coincidence of a subject area and a clip area in a graphic display system, comprising creating three parts list, one for parts of the subject area that are outside the clip area, a second for parts of the clip area that are ins... | 10/06/1987 |
| 4695838 | Plasma panel display selectively updatable on pel line basis A display system is disclosed comprising a processor, a plasma panel subassembly including generally orthogonally related arrays of conductors and drive circuits for the same, and a read-write memory for storing the image data provided by the processor an... | 09/22/1987 |
| 4692691 | Test system for keyboard interface circuit A test system of this invention is capable of distinguishing interface circuit trouble from keyboard trouble. For diagnosis, an inhibit signal is generated to supply a test clock signal to an output shift register and an input shift register of the interf... | 09/08/1987 |
| 4688033 | Merged data storage panel display A multi-window display station having main frame (host) interactive and local personal computer display data buffers is provided. The outputs of the two data buffers are merged, using a row or swath buffer, according to default or escape codes stored in o... | 08/18/1987 |
| 4688181 | Image transformations on an interactive raster scan or matrix display An interactive raster-scanned display device has a microprocessor (1) and random access memory (3) which operate to issue instructions to a drawing engine (7) to cause it to load and erase image pel representation in an image buffer (9) in order to contro... | 08/18/1987 |
| 4686521 | Display apparatus with mixed alphanumeric and graphic image A graphics display apparatus employing a raster scanned cathode ray tube uses a refresh buffer constituted by a coded alphanumeric buffer and an associated character generator for displaying alphanumeric characters and other symbols and an all-points-addr... | 08/11/1987 |
| 4663617 | Graphics image relocation for display viewporting and pel scrolling By selecting the starting time of the display readout of a pel buffer raster generation, the pel data is mapped to a display screen with an arbitrary displacement with respect to the screen for relocation or scrolling of the pel image on the screen. To co... | 05/05/1987 |
| 4649379 | Data display apparatus with character refresh buffer and row buffers A data display apparatus employs a raster scan cathode ray tube (1), a character refresh buffer (2) and three character row buffers (5,6,15) to address a character generator (3) in conjunction with a slice counter (4) or offset slice counter (18) under co... | 03/10/1987 |
| 4642790 | Presentation space management and viewporting on a multifunction virtual terminal An interactive display system includes a display terminal on which an operator may display the data contained in windows (14.1, 14.2 . . . ) on formatted application data (PS 1, PS 2 . . . ) in selected viewports (15.1, 15.2 . . . ) on the screen 13. The ... | 02/10/1987 |
| 4640485 | Adjustable support for display monitor An adjustable support for a display monitor includes a turntable to allow swivelling and carrying a pair of support tubes on which is mounted a slidable support beam. A carrier having cylindrical bearing surfaces co-operates with skid-pads on the support ... | 02/03/1987 |
| 4636770 | Display terminal In a display terminal coupled to a computer and including a plurality of user interrupt devices for interactive communication with the computer, an apparatus for signalling to the user when the computer responds to a user interrupt comprises a counter arr... | 01/13/1987 |
| 4623880 | Graphics display system and method having improved clipping technique The invention concerns a graphics display system of the kind having a refresh raster display device, a line clipping mechanism for clipping line primitives for viewing in a selected rectangular viewport having horizontal and vertical edges parallel to the... | 11/18/1986 |
| 4604614 | Video display system employing pulse stretching to compensate for image distortion In order to compensate for image distortion introduced into a digitally-controlled raster-scan CRT by the finite video amplifier rise and fall times, the digital video drive waveform is subject to selective pulse stretching to extend where possible the du... | 08/05/1986 |
| 4592628 | Mirror array light valve A mirror array light valve is described comprising a transparent substrate, a plurality of post members arranged in a regular array on said substrate, and a plurality of deflectable square, rectangular, hexagonal or the like light-reflecting elements arra... | 06/03/1986 |
| 4566005 | Data management for plasma display A display management system for one or more large plasma gas panel displays (11) is organized to split the display management operations between a host processor (20), a system microprocessor (21) and a picoprocessor (27). The picoprocessor (27) is the he... | 01/21/1986 |
| 4566004 | Data management for plasma display A display management system for one or more large plasma gas panel displays (11) is organized to split the display mangement operations between a host processor (20), a system microprocessor (21) and a picoprocessor (27). The picoprocessor (27) is the hea... | 01/21/1986 |
| 4565947 | Color cathode ray tube for use with a light pen In a shadow mask cathode ray tube for use with a light pen, the elemental phosphor areas emissive of red light comprise a blend of a red-emissive phosphor with silver-activated cadmium sulphide (CdS:Ag), the CdS:Ag being present in an amount from 10% to 3... | 01/21/1986 |
| 4562450 | Data management for plasma display A display management system for one or more large plasma gas panel displays (11) is organized to split the display management operations between a host processor (20), a system microprocessor (21) and a picoprocessor (27). The picoprocessor (27) is the he... | 12/31/1985 |
| 4549118 | Step waveform generator and CRT vertical timebase incorporating such a generator A step waveform generator includes a cup and bucket circuit in which charging and discharging a cup capacitor (C1) with predetermined units of charge is achieved, in response to a train of pulses supplied to its input terminal (1), by means of an operatio... | 10/22/1985 |
| 4525707 | Gas panel interrogation by selective sustain A gas panel can provide optical data readout in an essentially serial manner for copying, communication, interaction and indication. This is accomplished by using substitute sustain cycles for reading particular addresses. A complement sustain signal obta... | 06/25/1985 |
