Electroacoustic transducer
I claim: 1. An electroacoustic transducer (5) comprising a magnetic frame (11-17) provided with a circular cylindrical air gap and including a bell shaped member (11), an oscillating element including... Read More
Inventors: Fresard, Marcel;, Assignee: Multiphonie S.A. (Geneva, CH) |
Transducer assembly for automatic message system
I claim: 1. A sound transducer for converting energy between electrical signals and sound comprising a housing, a field magnet mounted in the housing the field magnet producing a magnetic field in the... Read More
Inventors: Barsumian, Bruce R.;, Assignee: |
Acoustic device
What is claimed is: 1. An acoustic device adapted for operation over an operative frequency range of interest, comprising: a substantially rectangular member extending transversely of its thickness an... Read More
Inventors: Azima, Henry Firouz; Colloms, Martin; Harris, Neil John;, Assignee: New Transducers Limited (London, GB) |
Microphone system for teleconferencing system
In one aspect, the invention generally features a microphone system for use in an environment where an acoustic source emits energy from diverse and varying locations within the environment. The micro... Read More
Inventors: Chu, Peter Lee; Barton, William F.;, Assignee: PictureTel Corporation (Andover, MA) |
Microphone array apparatus
It is a general object of the present invention to provide a microphone array apparatus in which the above disadvantages are eliminated. A more specific object of the present invention is to provide a... Read More
Inventors: Matsuo, Naoshi;, Assignee: Fujitsu Limited (Kasawaki, JP) |
Audio signal energy level detection method and apparatus
This application relates generally to audio level detection circuits for use in audio signal processing. More particularly, it concerns energy level detection method and apparatus that preserve the to... Read More
Inventors: Strahm, Chris N.;, Assignee: Audio Teknology, Inc. (Portland, OR) |
Augmented phase-locked loop for very wide range acquisition and method therefor
Accordingly it is an object of the present invention to provide a new and improved phase-locked loop having a very wide, unambiguous locking range. It is a further object to provide a new and improved... Read More
Inventors: Bjornholt, John E.;, Assignee: Motorola Inc. (Schaumburg, IL) |
Adaptive signal weighting system
What is claimed is: 1. An adaptive signal weighting system: including a signal path for transmitting an electrical information signal of a predetermined bandwidth through said system, said system furt... Read More
Inventors: Davis, Mark F.;, Assignee: DBX, Inc. (Newton, MA) |
Phase control device
Accordingly, an object of this invention is to provide a phase control device which produces a plurality of pulse trains of a predetermined frequency and displaces each of said plurality of pulse trai... Read More
Inventors: Iino, Hiroshi; Hayashi, Tatsuo;, Assignee: Furuno Electric Co., Ltd. (Nishinomiya, JP) |
Wafer indexing system using a grid pattern and coding and orientation marks in each grid cell
It is a primary object of this invention to provide a wafer with an indexing and mapping system. It is another primary object of this invention to provide a system for accurately locating artifacts an... Read More
Inventors: Vogel, Marcel J.; Vogel, Siegfried F.;, Assignee: International Business Machines Corporation (New York, NY) |
Real time particle fallout monitor with tubular structure
OF THE INVENTION FIG. 1 depicts a configuration of an optical system that is employed with a particle flux monitor, in accordance with this invention. A light source 10, such as a laser, provides a l... Read More
Inventors: Borden, Peter; Munson, Jon;, Assignee: High Yield Technology (Mountain View, CA) |
High mass ion detection system and method
What is claimed is: 1. An ion detection system, comprising: means for providing a beam of ions; target means for intercepting said ions and ejecting secondary negatively charged particles, comprising:... Read More
Inventors: Mahoney, John F.; Perel, Julius;, Assignee: Phrasor Scientific, Inc. (Duarte, CA) |
Methods for producing compound semiconductor devices
It is an object of the present invention to provide a method for producing compound semiconductor devices, whose crystallinity is improved, in order that high quality crystal layers can be fabricated ... Read More
Inventors: Miyazawa, Seiichi; Mizutani, Natsuhiko;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Charge collection control circuit for use with charge-coupled photodetector arrays
What is claimed is: 1. A charge collection control circuit for use with an imaging system comprising a plurality of photodetector cells, each photodetector cell comprising a charge-collecting region, ... Read More
Inventors: Bowlby, Jr., James O.; Johnston, Gregory E.; Malm, Robert E.;, Assignee: X-Ray Scanner Corporation (Torrance, CA) |
Apparatus for determining vapor content of a gas/vapor mixture
I claim: 1. Apparatus for determining the vapour content of a gas/vapour mixture, said apparatus comprising two temperature sensing devices, one of said devices being adapted to measure the temperatur... Read More
Inventors: Land, Thomas;, Assignee: Land Pyrometers Limited (Dronfield, GB2) |
Apparatus and method for removing common mode vibration data from digital turbine blade vibration data
The present invention is directed to an apparatus and method for removing common mode vibration data from digital turbine blade vibration data in a fast, efficient manner which does not require the in... Read More
Inventors: Twerdochlib, Michael; Rozelle, Paul F.; Sarasas, Santitavee;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Cryogenic power cable
OF THE INVENTION This invention relates to a cryogenic power cable which permits large capacity power transmission with the electric resistance and the joule loss of the conductor of the cable reduce... Read More
Inventors: Iwata, Zensuke;, Assignee: The Furukawa Electric Co., Ltd. (Tokyo, JA) |
Air-cooled cables with terminals and method of producing same
Accordingly, it is an object of the present invention to provide a terminal for an air-cooled cable that is easy to manufacture and that will not be severed. Another object of the present invention is... Read More
Inventors: Naito, Mitsuo;, Assignee: |
Carrier recovery network for QPSK modems employing synchronized oscillators
The present invention is directed to a carrier recovery network of greatly simplified construction which is able to track both high and low frequency carriers without the inherent disadvantages of the... Read More
Inventors: Uzunoglu, Vasil;, Assignee: Communications Satellite Corporation (Washington, DC) |
Carrier recovery method and apparatus having an adjustable response time determined by carrier signal parameters
A demodulator circuit demodulates an input signal having a varying amplitude and phase. The demodulator circuit includes phase tracking means having a predetermined response time for tracking the phas... Read More
Inventors: Cahill, Stephen V.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Low delay decoding
The present invention is directed to a method and apparatus for decoding a frame of interleaved information bits in a communications system. The present invention permits decoding of the frame of inte... Read More
Inventors: Lundby, Stein A.;, Assignee: Qualcomm Incorporated (San Diego, CA) |
Electronic test fixture
What is claimed is: 1. A microelectronic circuit board node point and inspection point continuity testing fixture comprising: (a) a body having a cavity located therein; (b) a top plate having a plura... Read More
Inventors: Logan, John K.;, Assignee: |
Voltage measuring device
Accordingly, it is a primary object of the present invention to provide a voltage measuring device which has a high input impedance and can measure a wide range of voltages. It is another object of th... Read More
Inventors: Inaba, Ritsuo; Wasa, Kiyotaka;, Assignee: Matsushita Electric Industrial Co., Ltd. (Kadoma, JP) |
Method of automatically calibrating a microprocessor controlled digital multimeter
It is a general object of this invention to provide an improved multimeter. It is a more specific object to provide a multimeter which has self-calibration and diagnostic features. It is another objec... Read More
Inventors: Nickel, Walter; Tarczy-Hornoch, Zoltan;, Assignee: Systron Donner Corporation (Concord, CA) |
Reversible thermal vest garment
What I claim is: 1. An insulating garment comprising a vest having spaced inner and outer fabric layers joined to one another only along their front edges around the neck opening therein and around th... Read More
Inventors: Clark, William H.;, Assignee: |
Electronic musical instrument
It is accordingly a primary object of the present invention to provide an electronic musical instrument capable of reproducing the string bowing instrument tone whose tone color is slightly varied by ... Read More
Inventors: Fujita, Yoshio;, Assignee: Yamaha Corporation (Hamamatsu, JP) |
Piezo electric transducer for measuring instantaneous vibration velocity
According to the present invention a high-sensitivity piezo electric crystal stack with interposed electrodes is compressed between a base and a seismic mass. Alternate electrodes are connected in par... Read More
Inventors: Farstad, Johan T.;, Assignee: IRD Mechanalysis, Inc. (Columbus, OH) |
Waveform timing alignment system for digital oscilloscopes
An object of this invention is, therefore, to provide a system for achieving temporal alignment of waveforms acquired by digital oscilloscopes. Another object of this invention is to provide such a sy... Read More
Inventors: Kareem, Arif; Walker, George S.; Knierim, Daniel G.;, Assignee: Tektronix, Inc. (Beaverton, OR) |
Apparatus for generating and cooling synthesis gas
I claim: 1. A synthesis gas generation apparatus including a vertically extending synthesis gas generator having a lower outlet through which hot synthesis gas is withdrawn; means defining a verticall... Read More
Inventors: Koog, Wolfgang;, Assignee: Texaco Development Corporation (White Plains, NY) |
Method and apparatus for treating waste containing organic contaminants
What is claimed is: 1. A countercurrent, direct fired rotary kiln for the decontamination for a variety of materials containing hazardous organic materials comprising an elongated open ended cylindric... Read More
Inventors: DeCicco, Steven G.; Lee, Sung K.; Novak, Rudy G.; Wass, William E.; Mak, Kai K.;, Assignee: International Technology Corporation (Knoxville, TN) |
Audio Signal Processing 
