Elevator system master car switching
The present invention is a new and improved elevator system and method of protecting against control signal failures and loss of elevator car service essentially of the type which uses a distributed c... Read More
Inventors: Blain, Jeffrey W.; Chen, Jean;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Clock distribution system for reducing clock skew between processors in a dual sided tightly coupled system
Accordingly, it is an object of the present invention to provide a clock distribution system in a tightly coupled dual sided system which reduces the central processing unit to central processing unit... Read More
Inventors: Aldrich, Gregory; Si, Stephen S.; Wang, Eugene T.; Woffinden, Gary A.;, Assignee: Amdahl Corporation (Sunnyvale, CA) |
Electrolytic corrosion resistant insulator
What is claimed is: 1. An electrolytic corrosion resistant insulator comprising: an insulator body having a cavity therein; a pin located within said cavity of the insulator body, a portion of said pi... Read More
Inventors: Kito, Kuniji; Watanabe, Akihiro; Mori, Shigeo;, Assignee: NGK Insulators, Ltd. (Nagoya, JP) |
Ceramic microphone
The present invention has been accomplished by noticing that, by providing n-divided electrodes (where n is an integral number more than 2) on a ceramic plate in place of each of a pair of conventiona... Read More
Inventors: Imai, Nobuomi;, Assignee: Primo Company Limited (Mitaka, JP) |
Gain-adjusting conference circuit
The principles of this invention are disclosed, by way of example, in an electronic program controlled telephone system of the design shown in FIG. 1. Systems of the general type as shown in FIG. 1 a... Read More
Inventors: Sparber, Richard G.;, Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ) |
Scramble detecting circuit in a satellite broadcasting receiver and scramble detecting method
Therefore, it is an object of the present invention to provide a circuit capable of muting the scrambled audio signal after detecting the presence of scrambling. The circuit operates by analyzing flag... Read More
Inventors: Han, Hong-Soo;, Assignee: Samsung Electronics Co., Ltd. (Kyungki, KR) |
Detection system
OF A PREFERRED EMBODIMENT Referring to FIG. 1(A), it is assumed that a ship equipped with a radar system is proceeding in a bearing of the north and a relative display in "Ship's head up" is presente... Read More
Inventors: Tanigaki, Hidetoshi;, Assignee: Furuno Electric Co. Ltd. (Hyogo, JP) |
Active commutated double balanced mixer
An active commutated double balanced mixer is disclosed. The active commutated double balanced mixer comprises a transformer with a primary connected to an RF input signal to be up or down converted a... Read More
Inventors: Wyse, Russell D.;, Assignee: Rockwell Collins, Inc. (Cedar Rapids, IA) |
Radio frequency amplifier
According to the invention, there is provided a radio frequency amplifier comprising: an input amplifier having an input for receiving input signals and an output; a first transconductance amplifier h... Read More
Inventors: Madni, Arshad; Trodd, Lance R;, Assignee: Mitel Semiconductor Limited (Wiltshire, GB) |
Differential to single-ended converter with large output swing
Accordingly, embodiments of the present invention provide methods and apparatus for converting differential signals to single-ended signals. One embodiment takes advantage of inductive loads to increa... Read More
Inventors: Razavi, Behzad; Zhang, Pengfei;, Assignee: RF Micro Devices, Inc. (Greensboro, NC) |
High linearity Gilbert I Q dual mixer
OF THE INVENTION Throughout the following descriptions it will be appreciated that the signals, local oscillators, and the various amplifiers and mixers being described operate in `balanced` or diffe... Read More
Inventors: Manku, Tajinder; Khajehpour, Javad;, Assignee: SiRiFIC Wireless Corporation (Waterloo, CA) |
Key set toll restrictor
In accordance with the invention a telephone restriction system recognizes certain digits or combinations of digits in a telephone number dialed or otherwise entered by the user which are prohibited. ... Read More
Inventors: Sharvit, Martin M.;, Assignee: Cindon Research Inc. (Rexdale, CA) |
Automatic cash transaction system and method
The present invention has been made in consideration of the above problems. It is therefore an object of the present invention to provide an automatic cash transaction system and method capable of rea... Read More
Inventors: Kadono, Osamu; Ushizima, Kunio;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Actuating device for a battery operated module
An object of the invention is to realize an actuating device which provides, by means of a push-button, a reliable electrical contact between one of the poles of a battery feeding the module and a ter... Read More
Inventors: Wirz, Carl A.;, Assignee: |
Public telephone security bracket
This invention is directed to an anti-theft bracket adapted for attachment to the back mounting panel of a public telephone booth housing and to secure the bottom portion of a public telephone unit at... Read More
Inventors: Raines, Vernon R.;, Assignee: Raines; Joyce Anita (So. Houston, TX) |
Deformable membrane keypad assembly for public telephones
As will be seen, the present invention satisfies the foregoing criteria. Stated generally, the present invention comprises a telephone keypad assembly including keypad pushbuttons supported by a keypa... Read More
Inventors: Jekot, David E.; Jordan, Harold W.;, Assignee: Phillips & Brooks, Inc. (Cumming, GA) |
Telephone line seizure circuit
Accordingly, one object of the present invention is to provide a telephone line seizure device which is low in cost and which is simple to install. The present invention achieves these objectives by s... Read More
Inventors: Azem, Khaled;, Assignee: Design Tech International Inc. (Springfield, VA) |
Structure of cells within a mobile communication system
It is an object, therefore, of the present invention to overcome the disadvantages and limitations of a prior mobile communication system by providing a novel and improved mobile communication system.... Read More
Inventors: Fujii, Teruya; Sakamoto, Masayuki;, Assignee: Nippon Telegraph and Telephone Corporation (Tokyo, JP) |
Non-twist eccentric coupler
Another object of this invention is to provide for new and improved methods of and apparatus for coupling one optical fiber to another without any appreciable twisting thereof. In accordance with one ... Read More
Inventors: Dakss, Mark L.; Meslener, George J.; Stone, Samuel M.;, Assignee: GTE Laboratories Incorporated (Waltham, MA) |
Underwater optical fiber connector
The present invention aims at obviating such problems heretofore encountered and at providing a connector of water-tight construction for use in optical fibers which is compact in size and simple in h... Read More
Inventors: Iwamoto, Yoshinao; Shirasaki, Yuichi; Fujise, Masayuki; Asakawa, Kenichi;, Assignee: Kokusai Denshin Denwa Co., Ltd. (Tokyo, JP) |
Optical wavelength conversion device
The primary object of the present invention is to provide an optical wavelength conversion device wherein the optical propagation loss is minimized. Another object of the present invention is to provi... Read More
Inventors: Kamiyama, Kozi; Okazaki, Yoji;, Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP) |
Connector with improved clip connector half
The present invention relates to a connector for joining light transmitting fiber cables through a cover to a transmitter and/or receiver device. The connector is characterized by an clip connector ha... Read More
Inventors: Abendschein, Frederic H.;, Assignee: AMP Incorporated (Harrisburg, PA) |
Armored fiber optic cables
In accord with the principal object of the present invention, an armored fiber optic cable is disclosed having both fiber optics and armor wires located outside the cable core in a position where the ... Read More
Inventors: Holmberg, Gerald E.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Method of producing polarization-maintaining single-mode optical waveguides and preforms used therein
OF THE PREFERRED EMBODIMENT In a glass tube 1 of SiO.sub.2, the cladding material of the optical waveguide to be produced, whose outside and inside diameters are designated d5 and d4, respectively, a... Read More
Inventors: Weissert, Herbert;, Assignee: Standard Elektrik Lorenz AG (Stuttgart, DE) |
Optical fiber connectors and methods of making
The foregoing problem has been overcome by the optical fiber connector of this invention and the methods of making same. A portion of a connector which is used to terminate an optical fiber includes a... Read More
Inventors: Palmquist, John M.;, Assignee: American Telephone and Telegraph Company, AT&T Technologies, Inc. (Berkeley Heights, NJ) |
Connector for optical fiber
It is therefore an object& of the present invention to provide a connector for optical fibers in which the optical fibers are positively secured to the holding member, the coupling efficiency inherent... Read More
Inventors: Hasegawa, Kazuo; Miyahara, Yoshinori;, Assignee: Alps Electric Co., Ltd. (JP) |
Optical fiber connector and methods of making
Referring now to FIGS. 1 and 2 there is shown a portion of an optical fiber connector 20 for providing an optical fiber connection between two optical fibers 21--21. The connector 20 is exemplary and... Read More
Inventors: Aberson, Jr., James A.; DeVeau, George F.; Yasinski, Kenneth M.;, Assignee: American Telephone & Telegraph Company, AT&T Bell Laboratories (Murray Hill, NJ) |
Ferrule for optical fiber transmitting linearly polarized light and optical fiber connector using this ferrule
It is therefore an object of the present invention to provide a ferrule for optical fibers transmitting linearly polarized light and an optical fiber connector using such a ferrule, capable of prevent... Read More
Inventors: Nagase, Ryo; Noda, Juichi; Sugita, Etsuji;, Assignee: Nippon Telegraph and Telephone Corp. (JP) |
Screening arrangement for connectors
I claim: 1. A screening arrangement for a connector having a front end for mating with a mating connector, a rear end, and at least two poles for receiving at least two optical fibres entering the con... Read More
Inventors: Brownjohn, Nicholas E.;, Assignee: Lucas Industries public limited company (GB2) |
Telephone answering device having balanced input
These and other objectives are achieved by the inventive telephone answering device in which multiple purpose circuitry and simplified mechanisms are used to accomplish mode switching and remote contr... Read More
Inventors: Jacobson, Sava;, Assignee: |
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