Telephone line interface circuit with voltage switching
According to one aspect of this invention there is provided an interface circuit for a two-wire telephone line, comprising: driver means for supplying direct current on the line; a controlled voltage ... Read More
Inventors: Rosenbaum, Stanley D.; Sutherland, Brian A. F. S.; Rosch, Reinhard W.;, Assignee: Northern Telecom Limited (Montreal, CA) |
Receiver for the reception of signals transmitted by delta modulation
What is claimed is: 1. A delta modulation receiver comprising means for receiving a pulse pattern of a pulse pattern group Q.sub.K constituted by an information pulse I.sub.K at an instant t.sub.k and... Read More
Inventors: Eggermont, Ludwig Desire Johan; Wevers, Anton Hendrik;, Assignee: U.S. Philips Corporation (New York, NY) |
Apparatus and processes for realistic simulation of wireless information transport systems
It is an object of this invention to provide a communications-effects model and interactive simulation device which faithfully reproduces field conditions in terms of radio connectivity and networks e... Read More
Inventors: Brockel, Kenneth H.; Procopio, Jr., Victor J.; Major, Paul A.; Vigants, Arvids; Pasirstein, Joseph; Wood, Richard W.;, Assignee: The United States of America as represented by the Secretary of the Army (Washington, DC) |
Apparatus for removing print from a recording medium
The present invention has been developed to substantially eliminate the above-described disadvantages. It is therefore an object of the present invention to provide a printing material removing appara... Read More
Inventors: Taniguchi, Kazuko; Atarashi, Haruhiko;, Assignee: Minolta Co., Ltd. (Osaka, JP) |
Device for measuring the quality of a digital radio link
The object of the present invention is to obviate these disadvantages. According to an aspect of the invention, there is provided a device for measuring the quality of a digital radio link, having a t... Read More
Inventors: Bursztejn, Jacques;, Assignee: Thomson CSF (Paris, FR) |
Equalizer circuit
The present equalizer circuit retains the desirable features of the Bode network while eliminating both the disadvantages of the Bode network noted above. For example, the present circuit can be desig... Read More
Inventors: Orchard, Henry John;, Assignee: GTE Automatic Electric Laboratories Incorporated (Northlake, IL) |
Digital click removal and squelch control circuit for an FM receiver
It is an object of the invention to detect and remove or discard electrical noise, in the form of clicks or the like, from a frequency-modulated electrical signal received by an FM receiver or from a ... Read More
Inventors: Mattei, Anthony;, Assignee: Ford Motor Company (Dearborn, MI) |
Short pulse sequential waveform generator
I claim: 1. An apparatus for providing a sequence of short pulses in response to an applied input pulse of a predetermined pulse width and a predetermined rise time, said apparatus comprising transmis... Read More
Inventors: Cronson, Harry M.;, Assignee: Sperry Rand Corporation (New York, NY) |
Conductive EMI test system, a decoupling network therefor
OF A PREFERRED EMBODIMENT FIG. 1 is a side view of a decoupling network within a block diagram of a bench test setup 10 for analyzing EMI. A test item or device under test (DUT) 12 is coupled to its ... Read More
Inventors: Trzcinski, David J.; North, Terry M.;, Assignee: Chrysler Motors Corporation (Highland Park, MI) |
Pulse power linac
The instant invention provides a LINAC that is constructed by arranging a plurality of accelerating gaps in series and energizing these gaps in sequence by releasing or switching a single pulse of ene... Read More
Inventors: Villa, Francesco;, Assignee: Harris Blake Corporation (Great Neck, NY) |
Spark gap switch system with condensable dielectric gas
It is, therefore, an object of this invention to provide a spark gap switch system which uses an easily condensable gas as the insulating gas. It is another object of this invention to provide a spark... Read More
Inventors: Thayer, III, William J.;, Assignee: The United States of America as represented by the United States (Washington, DC) |
Expert system for statistical design of experiments
In accordance with the present invention an expert system is provided which can interface with a client to generate and analyze balanced designs using a linear models approach, expert reasoning abilit... Read More
Inventors: Lorenzen, Thomas J.; Spangler, William S.; Corpus, William T.; Truss, Lynn T.;, Assignee: General Motors Corporation (Detroit, MI) |
Method and apparatus for preventing external detection of signal information
I claim: 1. A method for preventing external detection of signal information in video signals comprising steps of: a) emitting video signals containing a bit signal sequence from a video circuit; b) g... Read More
Inventors: Lindholm, Per;, Assignee: Cominvest Research AB (Stockholm, SE) |
Proximity switch insensitive to interference fields
We claim: 1. A proximity switch for detecting the position of a machine element comprising: at least one sensor providing a first signal having a total signal comprising a detection field signal compo... Read More
Inventors: Kammerer, Heinz; Reinhard (Neuhausen, both of, DE);, Assignee: Gebhard Balluff Fabrik Feinmechanischer Erzeugnisse GmbH & Co. (Neuhausen, DE) |
Variable volume box
The variable size box of the present invention is related to those carton boxes used to contain cereals, powders, and the like typically available to consumers at grocery stores and supermarkets. The ... Read More
Inventors: Rudd, Darryl J.;, Assignee: |
Antenna for RF tag with a magnetoelastic resonant core
A radio frequency identification transponder (RFID tag) in accordance with the principles of the present invention combines a tag antenna, one or more elements of nonlinear magnetic material, and RFI... Read More
Inventors: Castellano, Anthony; Heinrich, Harley Kent; Schrott, Alejandro Gabriel; Von Gutfeld, Robert Jacob;, Assignee: Intermec IP Corp. (Woodland Hills, CA) |
Method and apparatus for selectively activating radio frequency identification tags that are in close proximity
We claim: 1. An apparatus for capacitively powering radio frequency identification devices, the apparatus comprising: a plurality of antenna elements; an exciter, coupled to at least a first portion o... Read More
Inventors: Collins, Timothy James; Rakers, Patrick L.; Rachwalski, Richard Stanley; Quaderer, James G.;, Assignee: Motorola, Inc. (Schaumberg, IL) |
RFID tag having multiple transceivers
In accordance with one aspect of the present invention, a method of communicating information between an RFID tag and first and second readers comprises the following: controlling a first transceiver ... Read More
Inventors: Becker, Robert C.; Meyers, David W.; Kazi, Sabera;, Assignee: Honeywell International Inc. (Morristown, NJ) |
Identification tag
What is claimed is: 1. An identification tag, comprising: a) transponding means for receiving interrogating radiation and for emitting modulated radiation in response; and b) modulating means for modu... Read More
Inventors: Forster, Ian;, Assignee: Marconi Data Systems Limited (Hatfield, GB) |
Piezo-electric tag
The inventor has devised a tag which addresses this principal problem and which is operable, for example, from moderate levels of incident radiation thereupon in the order of 10 μW. Such moderat... Read More
Inventors: Forster, Ian J;, Assignee: Mineral Lassen LLC (Las Vegas, NV) |
Proximity switch having variable gain oscillator
In view of such problems of conventional proximity switches, a primary object of this invention is to provide a proximity switch which has a high response speed through speed up in the start of the os... Read More
Inventors: Kamiya, Fumio; Nodera, Hisatoshi; Ueda, Kenji; Imazu, Keinosuke; Tomioka, Hidehiro;, Assignee: Omron Tateisi Electronics, Co. (Kyoto, JP) |
Method for sending message that indicates position and message transmission device and message transmission server
1. A method for sending a message that indicates position comprising: a) receiving a first message, said first message including a determination of position and an instruction that relates to position... Read More
Inventors: Murphy, Michael D.;, Assignee: Trimble Navigation Limited (Sunnyvale, CA) |
Phase coherent interference signal suppression system and method
The present invention is an interference signal suppression system which comprises a first and second receiving antenna positioned to receive a communication signal and which are physically spaced one... Read More
Inventors: Goldman, Herbert B.;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Bit allocation among carriers in multicarrier communications
Accordingly, the present invention provides a technique that may be employed in multicarrier communications to improve the efficiency of error correction using symbol-oriented error correction methodo... Read More
Inventors: Shapiro, Jerome M.; Sandberg, Stuart D.; Tzannes, Marcos C.;, Assignee: Aware, Inc. (Bedford, MA) |
Interference mitigation system for protecting radio astronomy and method of using same
What is claimed is: 1. A method of mitigating electromagnetic interference during a scheduled radio astronomy session as scheduled at a radio astronomy site, said electromagnetic interference created ... Read More
Inventors: Leopold, Raymond Joseph; Olds, Keith Andrew; Daniel, Brian Michael;, Assignee: Motorola, Inc. (Schaumburg, IL) |
System and method for recovering a pilot tone in a local multipoint distribution system signal
From the foregoing, it may be appreciated that a need has arisen for an effective and efficient pilot tone recovery system. In accordance with the present invention, an improved system and method for ... Read More
Inventors: Black, Michael F.;, Assignee: Raytheon Company (Lexington, MA) |
Wireless selective call receiver with alarm message signal stored to have protection attribute
The present invention is made in the light of the above-mentioned circumstances. An object of the present invention is to provide a method for protecting an important alarm message signal and a wirele... Read More
Inventors: Miyashita, Yukio;, Assignee: NEC Corporation (Tokyo, JP) |
Dot printer and method for grey level recording with different bit-depth dimensions
We claim: 1. A non-impact recording apparatus for recording grey level exposures of pixels with different bit-depth dimension, the recording apparatus comprising: a recording element; means for provid... Read More
Inventors: Ng, Yee S.; Pham, Hieu T.;, Assignee: Eastman Kodak Company (Rochester, NY) |
Apparatus with frame check capability for reproducing images by combining outputs of concurrently operating disk players storing portions of the images
It is, therefore, an object of the invention to provide an image reproducing apparatus which can prevent the display of a disordered image due to mismatching of the contents of output signals from a p... Read More
Inventors: Temma, Tetsuya; Nakajima, Yasuharu; Matsuura, Hiroyasu; Tobe, Takeo; Kono, Jun; Fujimura, Takuo; Kikuchi, Isao; Takada, Atsushi;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Digital detector
According to the present invention there is provided a digital detector to convert an audio frequency signal into a digital signal, characterized in that the detector comprises an Analog/Digital (A/D)... Read More
Inventors: Kuusinen, Tero;, Assignee: Nokia Mobile Phones Ltd. (Salo, FI) |
Telecommunications 
