Semiconductor integrated circuit device and data transmission system
OF THE INVENTION To begin with, the present invention will be outlined. A data transmission system according to the present invention and a LSI suitable therefor are characterized in that transmissio... Read More
Inventors: Iwata, Yoshihisa;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
Method and system for improving memory interface data integrity in PLDs
An invention for optimized data presentation to an external memory interface bus is provided. The embodiments of the present invention monitor the bits in the data, and based on the type of bits that... Read More
Inventors: Liu, Hui;, Assignee: Altera Corporation (San Jose, CA) |
Keyboard switch
It is therefore an object of the present invention to provide a small-sized keyboard switch which employs membrane switches and transmits to the operator's finger a distinctive feeling of actuation. A... Read More
Inventors: Hanajima, Tadashi; Kato, Tatsuo;, Assignee: Hosiden Electronics Co., Ltd. (Osaka, JP) |
Selective call receiver with an intelligent memory system
The invention thus has as its objective a pager intended to receive radio-broadcast message signals comprising call signal information and message information, said message information comprising one ... Read More
Inventors: De Luigi, Bruno; Maas, Ulrich;, Assignee: Eta SA Fabriques d'Ebauches (Grenchen, CH) |
Pushbutton keyboard assembly having pole and inner contacts simultaneously engaged by a bridging contact
Among the many objects of this invention may be noted the provision of a keyboard system which requires a minimal number of parts; the provision of such a keyboard system in which the switching statio... Read More
Inventors: Kaminski, Perry W.;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Tactile membrane keyboard with elliptical tactile key elements
The tactile keyboard of this invention has keys formed in a membrane sheet which are elliptical in shape and have a plurality of inclined ramps around the key. More specifically, each key is a protrus... Read More
Inventors: Balash, Frederick A.; Caton, Mary T.;, Assignee: Rogers Corporation (Rogers, CT) |
Sequentially operated snap action membrane switches
In accordance with one embodiment of the present invention, a switching apparatus is provided that efficiently transmits tactile feedback from a snap dome to a person's finger to indicate when a switc... Read More
Inventors: Norris, Jeffrey J.;, Assignee: ITT Corporation (New York, NY) |
Dual tact switch assembly
What is claimed as new and desired to be secured by Letters Patent of the United States is: 1. An improved electrical switch assembly of the type wherein an operator senses tactile feedback from switc... Read More
Inventors: Domzalski, Frank M.; Agnatovech, William J.;, Assignee: C & K Components, Inc. (Watertown, MA) |
Electrostatic particle separation system, apparatus, and related method
Accordingly, it is a primary object of the present invention to provide an improved apparatus for electrostatically separating two species of particles from a particle mixture that overcomes the above... Read More
Inventors: Stencel, John M.; Schaefer, John L.; Neathery, James K.; Ban, Heng; Finseth, Dennis;, Assignee: University of Kentucky Research Foundation (Lexington, KY) |
Apparatus for varying scale of a video still and moving image signal with key data before superimposing it onto a display signal
Accordingly, an object of the present invention is thus to simultaneously scale up or down a still image and a moving picture and display the images. In order to attain at least part of the above obje... Read More
Inventors: Takeuchi, Kesatoshi;, Assignee: Seiko Epson Corporation (Tokyo, JP) |
Data conversion
It is anticipated that a data conversion method and apparatus embodying of the invention will be used in the field of broadcasting where the conversion apparatus used at the receiving end of a data tr... Read More
Inventors: Wright, Derek T.;, Assignee: British Broadcasting Corporation (London, GB) |
Dsack clamp
The present invention provides a circuit for use in a peripheral interface unit of a microprocessor-based system that actively drives a tri-state data strobe acknowledge (DSACK*) signal to a logical l... Read More
Inventors: Hollyer, Robert; Farrar, Douglas;, Assignee: Apple Computer, Inc. (Cupertino, CA) |
Printer with variable memory size
A main object of this invention is to provide a printer of the VBB type capable of suppressing the frequency of occurrence of overrun errors. Another object of this invention is to provide a printer w... Read More
Inventors: Isobe, Yasuhiko; Tsuji, Takunori; Hayashi, Yoshitsugu;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Bus interface controller for computer graphics
A bus interface controller for use in a digital information system having a system clock is disclosed. The bus interface controller comprises more than four data channels of more than nine bits per ch... Read More
Inventors: Dawson, John F.; Courtright, Glenn M.; Fischer, Douglas A.;, Assignee: Honeywell Inc. (Minneapolis, MN) |
Segmented matrix type switching device with simplified control
What is claimed is: 1. A matrix-type switching device comprising: a switching matrix provided with row inlets and column inlets and having row and column conductors cut up into segments according to a... Read More
Inventors: Semur, Pierre; Tanguy, Jacques;, Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel (Paris, FR) |
Maleic anhydride-modified polymer lager coated with polymeric composition derived from vinylidene chloride
I claim: 1. A composite consisting of a coated polypropylene film wherein the coating consists of a multipolymer formed from about 80% to about 90% by weight of vinylidene chloride and from about 20% ... Read More
Inventors: Bivans, David A.; Duncan, Gary L.;, Assignee: Mobil Oil Corporation (New York, NY) |
Memo-print electronic apparatus
Accordingly, it is an object of the present invention to provide an improved electronic apparatus for inputting and printing out memo data in addition to information normal to the apparatus. It is ano... Read More
Inventors: Nakanishi, Yasuhiro; Sumitani, Toshihiko;, Assignee: Kabushiki Kaisha - Sharp (Osaka, JP) |
Adaptive digital filter
According to one aspect of the present invention there is provided a digital filter comprising a plurality of delay stages through which an input signal is fed successively; a plurality of individuall... Read More
Inventors: Adams, Peter F.; Cowan, Colin F. N.;, Assignee: British Telecommunications public limited company (GB3) |
Control store apparatus having dual mode operation handling mechanism
A data processing system comprising a central processing unit and a storage device, which device includes a control store for storing a plurality of control words used to control the operation of the ... Read More
Inventors: Terakawa, Kiyoshi H.; Hartley, Henry F.;, Assignee: Honeywell Information Systems Inc. (Waltham, MA) |
Piezoelectric ultrasonic apparatus and method for determining the distance from a predetermined point to a target
The invention comprises apparatus and method for determining the distance from a preselected point to a target. The apparatus directs an ultrasonic signal from a piezoelectric transducer at a preselec... Read More
Inventors: Seiferling, James E.;, Assignee: Blackwelders (Rio Vista, CA) |
Method and apparatus for generating data and analyzing the same to determine fluid depth in a well
OF THE PREFERRED EMBODIMENT OF THE INVENTION Indicated generally at 10 in FIG. 1 is apparatus constructed in accordance with the instant invention. Included therein is a cabinet 12, which encloses el... Read More
Inventors: Ahern, Timothy K.; Cebuhar, Phillip J.;, Assignee: Xelo, Inc. (Tulsa, OK) |
Apparatus for remote distance measurement
The present invention provides an apparatus for remote distance measurement in which the decay time of the transducer is variable and is therefore suitable for detecting objects that are near. The inv... Read More
Inventors: Koelpin, Thomas; Forster, Alfred;, Assignee: Siemens Aktiengesellschaft (Berlin and Munich, DE) |
Ultrasonic detector
The present invention relates to various aspects of ultrasonic detectors of the type that are used to determine the location of the liquid level within a tank or the magnitude of liquid flow within a ... Read More
Inventors: Leszczynski, Nicholas;, Assignee: Magnetrol International (Downers Grove, IL) |
Detector with ringdown frequency matching
The present invention is directed to an ultrasonic detector of the type that may be used to determine the level of a liquid within a tank or the magnitude of liquid flow within a conduit and which has... Read More
Inventors: Leszczynski, Nicholas;, Assignee: Magnetrol International, Inc. (Downers Grove, IL) |
Seismic data imaging system
Seismic exploration uses information in an attempt to determine the character of the ground without actually drilling into the ground. Many seismic exploration systems are based on launching acoustic ... Read More
Inventors: Allen, Samuel J.;, Assignee: Subsurface Exploration Company (Pasadena, CA) |
Logic cell which can be configured as a latch without static one's problem
According to the present invention, a logic cell is provided in which sequential functions may be generated. Under control of a clock signal, an output signal can be fed back as input and thereby latc... Read More
Inventors: Goetting, F. Erich;, Assignee: Xilinx, Inc. (San Jose, CA) |
Automatic voltage doubler switch
What is claimed is: 1. An automatic voltage doubler circuit comprising: rectifying means coupled to an AC line and selectively operable in either a diect mode or in a voltage doubler mode; switch mean... Read More
Inventors: Konopka, John G.;, Assignee: Zenith Electronics Corporation (Glenview, IL) |
Digital switching system
We claim: 1. A system for exchanging messages between subscribers and an exchange wherein messages of serial trains of digital pulses are coupled from an exchange to each subscriber during a TRANSMIT ... Read More
Inventors: Cooperman, Michael; Gray, Donald J.; Sieber, Richard W.; Moolenbeek, Rob;, Assignee: GTE Laboratories Incorporated (Waltham, MA) |
Delay circuit with phase locked loop control
What is claimed is: 1. A delay circuit comprising: first BICMOS delay means including voltage controllable time constant means; a source of input voltage coupled to said first BICMOS delay means; phas... Read More
Inventors: Ngo, Duc;, Assignee: Zenith Electronics Corporation () |
BiCMOS bit line load for a memory with improved reliability
Accordingly, there is provided, in one form, a bit line load coupled to a differential bit line pair in a block of the memory. The bit line load comprises first, second, and third transistors, and a r... Read More
Inventors: Nogle, Scott G.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
I/O Systems 
