Differential amplification circuit
It is therefore a primary object of the present invention to provide a differential amplification circuit in which the output stability against the temperature change is improved. In accordance with t... Read More
Inventors: Kominami, Yasuo; Yamamura, Masahiro; Mizumoto, Katsuji; Hanada, Toshihide;, Assignee: Hitachi, Ltd. (both ofTokyo, JP); Pioneer Electronic Corporation (both ofTokyo, JP) |
Floating NPN current mirror
An object of the invention is to provide a current mirror for use in monolithic integrated circuits. A further object of the invention is to provide a differential-to-single ended converter for use in... Read More
Inventors: Cave, David L.; Davis, Walter R.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Fractional frequency divider
What is claimed is: 1. An apparatus responsive to an input clock signal of frequency f for generating periodic pulses of frequency f/(2N+1), where N is an integer, said apparatus comprising: first div... Read More
Inventors: Yeager, Richard O.;, Assignee: RCA Corporation (Princeton, NJ) |
Pulse generator unit for fuel pump register
The new and improved pulse generator unit which is adapted for use in a resettable fuel pump register for registering the cost and volume of each fuel delivery in a preferred form employs a mounting a... Read More
Inventors: Wells, Arthur J.;, Assignee: Veeder Industries Inc. (Hartford, CT) |
Apparatus for synchronizing the operation of master and slave counters
In accordance with the invention, first and second identical counters have their outputs coupled to synchronizing means for controlling the application of clock pulses to the counters. The synchronizi... Read More
Inventors: Merrell, Richard G.;, Assignee: Zenith Electronics Corporation (Glenview, IL) |
Distributed feedback laser employing the stark effect
To achieve the objectives the present invention comprises a unique DFB laser wherein a periodic perturbation throughout the amplification medium creates laser feedback. Means are provided for creating... Read More
Inventors: Tobin, Mary S.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Error detection apparatus for data dependent coding circuitry
In FIG. 1 a data line 10 supplies data to a dash line block 12 containing a sync circuit block 14 and a line decode circuit block 16. The data line 10 also supplies signals to a delta t delay block 1... Read More
Inventors: Huffman, Charles E.; Majefski, Richard L.;, Assignee: Rockwell International Corporation (El Segundo, CA) |
Phase-locked laser array
I claim: 1. In a phase-locked laser array including a body of semiconductor material having therein a cavity region and means for defining a plurality of substantially parallel lasing zones in said ca... Read More
Inventors: Botez, Dan;, Assignee: RCA Corporation (Princeton, NJ) |
Semiconductor laser device
The semiconductor laser device of this invention, which overcomes the above-discussed and numerous other disadvantages and deficiencies of the prior art, comprises a substrate; a current blocking laye... Read More
Inventors: Hosoda, Masahiro; Sasaki, Kazuaki; Kondo, Masaki; Yamamoto, Saburo;, Assignee: Sharp Kabushiki Kaisha (Osaka, JP) |
Semiconductor superlattice heterostructures on non-planar substrates
A method for the production of thin (.ltoreq.500 .ANG.) epitaxially grown semi-conductor layers having a laterally varying SL periodicity is described. The method comprises providing a nonplanar, e.g.... Read More
Inventors: Kapon, Elyahou;, Assignee: Bell Communications Research, Inc. (Livingston, NJ) |
Method of fabricating laser diode
OF PREFERRED EMBODIMENT An embodiment according to the present invention is described below with reference the attached drawings. FIGS. 2A to 2G are cross-sectional views showing the process of fabri... Read More
Inventors: Kim, Ang-Seo;, Assignee: Hyundai Electronics Industries Co., Ltd. (Ich'on, KR) |
Depressed-index ridge waveguide laser diode containing a stabilizing region
An object of this invention is to provide an improved depressed index cladding ridge waveguide semiconductor laser diode. This object is achieved in a stabilized depressed-index cladding ridge wavegui... Read More
Inventors: Kahen, Keith B.;, Assignee: Eastman Kodak Company (Rochester, NY) |
Semiconductor apparatus
The semiconductor apparatus of this invention which overcomes the above-discussed and numerous other disadvantages and deficiencies of the prior art, comprises a step-shaped substrate and a multiple-l... Read More
Inventors: Hayakawa, Toshiro; Suyama, Takahiro; Yamamoto, Saburo;, Assignee: Sharp Kabushiki Kaisha (Osaka, JP) |
Method of manufacturing solid-state devices in which planar dimensional distortion is reduced
What we claim is: 1. A method of manufacturing a microminiature solid-state device, which comprises: providing a radiation-sensitive material on a first major surface of a solid-state substrate; provi... Read More
Inventors: Daniel, Peter J.;, Assignee: U.S. Philips Corporation (New York, NY) |
Plasma etching of silicon using fluorinated gas mixtures
OF THE PRESENT INVENTION An improved method for the plasma etching of silicon is described. Fluorinated gases are utilized to provide anisotropic etching. In the following description, numerous speci... Read More
Inventors: Tsang, Chi-Hwa;, Assignee: Intel Corporation (Santa Clara, CA) |
Process for manufacture of a vertical DMOS transistor
Referring now to FIG. 1, there is shown an n-channel vertical DMOS transistor 10 which is part of a silicon chip whose bulk 12 is of n-type conductivity. Transistor 10 is designed for use as a power ... Read More
Inventors: Himelick, James M.;, Assignee: Delco Electronics Corporation (Kokomo, IN) |
Method of reducing overetch during the formation of a semiconductor device
A method of forming a semiconductor device from a semiconductor wafer having a front and a back comprises the steps of forming a layer of material over the front and back of the wafer, and forming a l... Read More
Inventors: Becker, David S.;, Assignee: Micron Technology Inc. (Boise, ID) |
Methods and apparatus for etching semiconductor wafers and layers thereof
The invention relates, in one embodiment, to a method in a plasma processing chamber, for etching through an aluminum-containing layer and TiN layer. The TiN layer is disposed above the aluminum-conta... Read More
Inventors: Abraham, Susan C.;, Assignee: Lam Research Corporation (Fremont, CA) |
Process for cooling, depressurizing, and moisturizing retorted oil shale
OF THE INVENTION The apparatus and process of this invention allow the continuous removal of hot retorted oil shale from an oil shale retort operated at superatmospheric pressure while avoiding the p... Read More
Inventors: Deering, Roland F.; Dhondt, deceased, Roland O.; Hines, John E.;, Assignee: Union Oil Company of California (Los Angeles, CA) |
Method for manufacturing T-gate
Therefore, the present invention is directed to a method for manufacturing a T-gate useful for reducing gate serial resistance, improving through-put, and simplifying an MMIC (monolithic microwave int... Read More
Inventors: Lee, Won Sang;, Assignee: LG Semicon Co., Ltd. (Chungcheongbuk-Do, KR) |
Tube sound solid-state amplifier
The present invention relates generally to musical instrument amplifiers and more particularly to a solid-state amplifier employing a closed loop driver stage and an open loop, even harmonic-rich outp... Read More
Inventors: Butler, Brent K.;, Assignee: |
Method and apparatus for biasing a differential cascode circuit
The present invention provides a method and apparatus for biasing a differential cascode circuit which maintains a high differential output impedance without consuming much IC real estate. According t... Read More
Inventors: Delano, Cary;, Assignee: Tripath Technology, Inc. (Santa Clara, CA) |
Hot charge-carrier transistors
We claim: 1. A hot charge-carrier transistor comprising a base region through which current flow is by hot majority charge-carriers of one conductivity type, barrier-forming means which forms a base-c... Read More
Inventors: Harris, Jeffrey J.; Shannon, John M.; Woodcock, John M.;, Assignee: U.S. Philips Corp. (New York, NY) |
Optical sensor having a floatation means for detecting fluids through refractive index measurement
The present invention provides methods and sensors for sensing the presence of fluids, such as hydrocarbon-based liquids and/or water, in an ambient environment based upon their light refractive prope... Read More
Inventors: Cohn, Ralph F.;, Assignee: Boston Advanced Technologies, Inc. (Newton, MA) |
Unbalanced-to-balanced signal converter circuit
One object of the invention is to provide an unbalanced-to-balanced signal converter circuit configuration. Another object of the invention is to provide an unbalanced-to-balanced converter circuit wh... Read More
Inventors: Main, W. Eric;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Differential amplifier incorporating negative resistance
It is therefore an object of the present invention to provide a differential amplifier which possesses a wider frequency range, a greater amplification, a better common mode rejection ratio, and a wid... Read More
Inventors: Tanimoto, Hiroshi;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
CMOS amplifier with offset adaptation
OF A PREFERRED EMBODIMENT Referring first to FIG. 1a, a typical CMOS transconductance amplifier as known in the prior art is shown. FIG. 1b is a transfer curve for the amplifier circuit of FIG. 1a. F... Read More
Inventors: Anderson, Janeen D. W.; Mead, Carver A.; Allen, Timothy P.; Wall, Michael F.;, Assignee: Synaptics, Incorporated (San Jose, CA) |
Adjustable gain differential amplifier
OF THE INVENTION One having ordinary skill in the art of circuit design will recognize that the gain of a differential comparator or differential amplifier is given by g.sub.m =i.sub.out /.DELTA.v. C... Read More
Inventors: Kase, Kiyoshi;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Feedback differential amplifier circuit
OF THE INVENTION FIG. 1 is a circuit diagram illustrating a first embodiment of the present invention. In FIG. 1, 1a is an input terminal receiving an input terminal Vin, 1b is an input terminal rece... Read More
Inventors: Soda, Masaaki;, Assignee: NEC Corporation (JP) |
Ultrasonic measuring device, especially suited to non-destructive testing of materials
This goal was achieved as follows. Proceeding from the ultrasonic measuring devices of the kind noted initially, each amplifier stage is characterized by two transistorized individual amplifiers, name... Read More
Inventors: Volkmann, Klaus; Pollok, Horst; Kickartz, Manfred;, Assignee: Krautkramer GmbH & Co. (Hurth-Efferen, DE) |
Quantum Computing 
