Loudspeaker assembly with restructured diaphragm including a tweeter driven by a bass amplifier
My invention is a loudspeaker and enclosure which provides amplified bass sound. The assembly includes a conventional conical loudspeaker with one or more rings of plastic foam material bonded to the ... Read More
Inventors: Zeller, David M.;, Assignee: The Raymond Lee Organization, Inc. (New York, NY) |
Detecting redundant digital codewords using a variable criterion
FIG. 1 shows a digital codeword detector generally designated 10. Data from transmission line 12 is received by a receive unit 14. This receive unit is known in the art, and will only be briefly desc... Read More
Inventors: Grande, Johannes; Brown, James H.;, Assignee: Rockwell International Corporation (El Segundo, CA) |
Electrical conductor connection and method of making same
Briefly, the present invention includes two improvements to the invention disclosed in U.S. Pat. No. 4,163,869. The first is a new and improved process for making an electrical conductor connection be... Read More
Inventors: Benner, Henry F.;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Test counter
Therefore, the present invention provides a test counter that overcomes the various operational disadvantages associated with conventional test counters. Specifically, the test counter of the present ... Read More
Inventors: Killen, Samuel R.;, Assignee: |
Telephone service control device
I claim: 1. A telephone service device for use with a telephone set having a circuit plunger, comprising: a housing adapted to seat on the telephone set over at least one circuit plunger; a rotatable ... Read More
Inventors: Simmons, Sr., Ryden R.;, Assignee: |
Parity checker circuit
The present invention is directed to solve the problems pointed out above, and has for its object to provide a parity checker circuit capable of reducing the size of the chip of an integrated circuit ... Read More
Inventors: Wakimoto, Akihiko;, Assignee: Mitsubishi Denki Kabushiki Kaisha (JP) |
Music signal time reverse effect apparatus
OF THE PREFERRED EMBODIMENTS The music signal time reverse effect apparatus of the present invention, will be best understood by first referring to the various aligned graphs of signals versus time, ... Read More
Inventors: Schwartz, Louis A.;, Assignee: |
Method for determining the minimum number of acquisition sweeps to meet the risetime specifications of a digital oscilloscope
The present invention provides a method for determining and executing the minimum number of sample acquisition-sweeps necessary to meet the risetime specifications of a digital oscilloscope which uses... Read More
Inventors: Desautels, Patricia A.;, Assignee: Hewlett Packard Company (Palo Alto, CA) |
Freezing items for display in electronic watthour register
Accordingly, it an object of the invention to provide an electronic register for electric watthour metering system which overcomes the drawbacks of the prior art. It is a further object of the inventi... Read More
Inventors: Varney, Jr., Albert R.;, Assignee: General Electric Company (Somersworth, NH) |
Switching power supply with constant or sinusoidal input current and with fixed or variable output voltage
The best possible input current waveform is constant current. This is also the natural choice since the SPS output current remains usually unchanged during half-wave periods of the line voltage. Moreo... Read More
Inventors: Gulczynski, Zdzislaw;, Assignee: |
Wafer positioning system
OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention detect wafer positions as wafers are transported within semiconductor processing equipment and compensate for wafer misalig... Read More
Inventors: Berken, Lloyd M.; Freerks, Frederik W.; Jarvi, William H.; Sahin, Hatice;, Assignee: Applied Materials, Inc. (Santa Clara, CA) |
Process and apparatus for measuring the instability of an arc in an electrical arc furnace for processing liquid metal
What is claimed is: 1. Process for measuring the instability of an arc in an electrical furnace for processing a liquid metal, characterized in that: a signal representing the derivative of the intens... Read More
Inventors: Bourge, Michel; Engler, Gilbert; Maurer, Ghislain;, Assignee: Institut de Recherches de la Siderurgie Francaise (IRSID) (Puteaux, FR) |
Modem for a suppressed carrier communications system
The present invention pertains to a modem for use in a suppressed carrier, communications system including at least two, spaced apart, transmitter receivers wherein a portion of the carrier is transmi... Read More
Inventors: Bates, Wayne J.; Berenson, Walter L.; Euchner, Jr., William H.; Grigg, James H.; Stern, Morton; Taylor, Ronald W.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
First order recursive digital filter without multiplier
A recursive digital filter for filtering an n-bit digital input signal made in accordance with the present invention includes a summing circuit which receives the input signal. A second summing circui... Read More
Inventors: Graybill, Mark; Goetz, Allan;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Transversal type automatic equalizer with tap coefficient protection
It is an object of the present invention to provide an improved system of the transversal type automatic equalizer with a tap coefficient protection in which the abnormal growth of the tap coefficient... Read More
Inventors: Kaku, Takashi; Kishimoto, Hiroki;, Assignee: Fujitsu Limited (JP) |
Frequency attenuation compensated pneumatic headphone and liquid tube audio system for medical use
I claim: 1. A frequency attenuation compensated pneumatic headphone and acoustic tube audio system comprising: pneumatic tube driver means; acoustic plastic tube means transparent to scanning fields s... Read More
Inventors: Taylor, Jefferson H.;, Assignee: |
Electromagnetic relay structure
What is claimed is: 1. In an electromagnetic relay structure having an armature, coil means, contact means including contact terminals and fixed contacts and a coil holder body having said armature lo... Read More
Inventors: Sauer, Hans;, Assignee: Matsushita Electric Works Ltd. (Osaka, JA) |
Electromagnetic relay and the manufacture thereof
What is claimed is: 1. An electromagnetic relay comprising: a. a bobbin of plastic material defining therein a protective tube, a contact chamber and a magnet chamber that together form a space which ... Read More
Inventors: Sauer, Hans;, Assignee: Matsushita Electric Works, Ltd. (Osaka, JA); Sauer; Hans (Deisenhofen, DT) |
Magnetic relay
What is claimed is: 1. In a magnetic relay having an electromagnetic coil with an open center extending lengthwise therethrough and switch contact means having coacting ends disposed lengthwise in sai... Read More
Inventors: DeMaesschalck, Etienne; Geelen, Evrard;, Assignee: C.P. Clare International, N.V. (Tongeren, BE) |
Circuit for suppression of short-lived noise-phenomena in a digital audio signal
The circuit of the invention can be implemented in various ways. For example, individual blocks or groups of the blocks illustrated can be implemented by means of suitable circuits, in particular int... Read More
Inventors: Herrmann, Matthias;, Assignee: Blaupunkt-Werke GmbH (Hildesheim, DE) |
Fireplace with simulated flames
This invention relates to a simulated-flame fireplace assembly having a housing which surrounds a simulated firebox having a front wall with a transparent glass panel. Supported on a simulated ember b... Read More
Inventors: Rehberg, Thomas R.;, Assignee: Superior Fireplace Company (Fullerton, CA) |
Signal synthesizing system adaptable for discrete four-channel sound reproducing system and matrix four-channel sound reproducing system
What we claim is: 1. A signal synthesizing system for forming first and second recording or transmission signals from first, second, third and fourth sound signals LF, RF, LB and RB, said first record... Read More
Inventors: Takahashi, Susumu; Ito, Ryosuke;, Assignee: Sansui Electric Co., Ltd. (Tokyo, JA) |
Protection channel monitoring system using a check signal comprising two different N-bit code patterns sequentially arranged at random
It is an object of the present invention to provide a protection channel monitoring system wherein the sampling of the AMI code signals as transmitted through a protection channel can be carried out w... Read More
Inventors: Nakajima, Masahiro; Kashiwaba, Satoshi;, Assignee: NEC Corporation (Tokyo, JP) |
Pulse width modulated signal amplifier
What is claimed is: 1. A pulse width modulated signal amplifier comprising: a DC power source having first and second terminals; first and second transistor means each having a control electrode and a... Read More
Inventors: Attwood, Brian E.;, Assignee: |
Frequency generator using composite digitally controlled oscillators
OF THE INVENTION The frequency generator of the present invention generates a large number of frequencies N.sub.c with extremely small equal frequency spacing .delta. over a given bandwidth BW.sub.c.... Read More
Inventors: Sorgi, Aladino D.;, Assignee: Cubic Corporation (San Diego, CA) |
Electronic musical instrument with string-simulating switches
In a broad sense, the present invention is a player-actuable switching mechanism for an electronic musical instrument comprising a body and a neck, wherein the switching mechanism includes a plurality... Read More
Inventors: Fox, Jeffrey;, Assignee: |
Tone wave generator in electronic musical instrument
This invention relates to a note wave generator in an electronic musical instrument, in which data which varies repeatedly at the period corresponding to a desired musical tone frequency is produced a... Read More
Inventors: Hiyoshi, Teruo; Nakada, Akira; Suzuki, Tsutomu; Aoki, Eiichiro; Okumura, Takatoshi;, Assignee: Nippon Gakki Seizo Kabushiki Kaisha (Hamamatsu, JP) |
Voice spectrum analyzing system and method
In accordance with the present invention, there is provided a voice signal processing method and system in which a voice signal having a relatively low frequency component and a relatively high freque... Read More
Inventors: Nakamura, Shogo; Nakatani, Tomofumi;, Assignee: Ricoh Company, Ltd. (Tokyo, JP) |
Electronic musical instrument with exponential keyboard and voltage controlled oscillator
What is claimed is: 1. An electronic musical instrument having a voltage controlled oscillator for producing a sound signal having a frequency proportional to a control voltage applied to it, a keyboa... Read More
Inventors: Luce, David A.;, Assignee: Norlin Music, Inc. (Lincolnwood, IL) |
Electronic musical instrument
This invention relates to an electronic musical instrument and, more particularly, to prevention of noise in an electronic musical instrument. There has been known an electronic musical instrument whi... Read More
Inventors: Okumura, Takatoshi; Hamada, Seiya; Imamura, Akio;, Assignee: Nippon Gakki Seizo Kabushiki Kaisha (Hamamatsu, JP) |
Audio Signal Processing 
