Oscillator frequency control arrangement for a stereo decoder
What is claimed: 1. A stereo decoder apparatus responsive to an analog composite signal containing audio information that includes a pilot signal component, comprising: a controllable oscillator respo... Read More
Inventors: Filliman, Paul D.;, Assignee: RCA Licensing Corporation (Princeton, NJ) |
Audio-frequency electromechanical vibrator
It is an object of this invention to provide an audio frequency electromechanical vibrator which can make strong vibrations. It is another object of this invention to provide a vibrator which does not... Read More
Inventors: Hirano, Mutsuo;, Assignee: |
Mixing two signals derived from an audio source without oscillation
OF THE INVENTION The general nature of the invention and its mode of operation may be understood by reference to the block diagram of FIG. 1. Any conventional audio source 4, well known in the art, s... Read More
Inventors: Kempe, Robert B.;, Assignee: O. C. Electronics, Inc. (Milton, WI) |
Variable starting state scrambling circuit
It is an object of this invention to provide a scrambling/descrambling technique which is relatively secure even from an unauthorized user having the same receiver hardware. Briefly, the present inven... Read More
Inventors: Ragavan, Vivek; Wolfe, William H.;, Assignee: Communications Satellite Corporation (Washington, DC) |
Portable bar adapted for mounting electronic equipment
OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2 the portable bar 10 has an L-shaped case 12 with a top compartment 14 for storing liquor and mixer bottles, a protruding bottom compartment port... Read More
Inventors: Hays, Robert A.;, Assignee: |
Ghost signal elimination circuit
It is an object of the present invention to provide a greatly improved device and circuit to eliminate ghost signals from a received, incoming signal. It is an object also of the invention to accompli... Read More
Inventors: Cohen, Edwin;, Assignee: |
Digital correlation apparatus as for a television deghosting system
The present invention is a sampled data filtering and correlation system. The system includes apparatus for combining input signals applied to the system with correction signals to develop output sign... Read More
Inventors: Lewis, Jr., Henry G.; Ng, Sheau-Bao;, Assignee: RCA Corporation (Princeton, NJ) |
Video noise reduction system employing plural frequency bands
The video noise reduction system 10 of FIG. 1 reduces noise of luminance signals by subjecting high frequency luminance signal components to coring and subjecting low frequency luminance signal compo... Read More
Inventors: Christopher, Todd J.;, Assignee: Thomson Consumer Electronics, Inc. (Indianapolis, IN) |
Pitch control system
It is an object of the present invention to provide a pitch control system for suppressing the generation of tremolo sounds. Another object of the invention is to provide a pitch control system, which... Read More
Inventors: Iizuka, Tatsushi; Shinohara, Satoshi;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Telephone hook-up box
In the following detailed description, certain specific terminology will be employed for the sake of clarity and a particular embodiment described in accordance with the requirements of 35 USC 112, b... Read More
Inventors: Eller, Harry J.; Eller, Donald G.; Dudek, Edward R.; Goodwin, Edward C.;, Assignee: |
Signal encoding and decoding method and device
It is an object of the present invention to provide a method and device for encoding and decoding signals, which are fit for human visual and auditory characteristics, and which are adapted to reduce ... Read More
Inventors: Takeguchi, Nobuyasu; Akiyama, Toshihide; Takahashi, Kenichi;, Assignee: Matushita Electric Industrial Co., Ltd. (Osaka, JP) |
Signal quality evaluator
What is claimed is: 1. A speech signal quality evaluator comprising: a logarithmic amplifier responsive to said speech signal including noise level signals occurring during pauses between speech signa... Read More
Inventors: Harbert, Donald Duane; Kamerer, George Roy;, Assignee: RCA Corporation (New York, NY) |
Omindirectional modular siren
It is a primary object of the present invention to provide an improved modular siren which is easy and inexpensive to service. A related object of this invention is to provide an improved modular sire... Read More
Inventors: Bader, Joseph F.; Gosswiller, Earl W.;, Assignee: Federal Signal Corporation (Oak Brook, IL) |
Insulator comprising a holding metal fitting and a fiber reinforced plastic rod held in the sleeve of the metal fitting under pressure
The object of the present invention is to provide an insulator, which is free from the above-described drawbacks and has an improved fatigue life. The feature of the present invention is the provision... Read More
Inventors: Ishihara, Takeshi; Kojima, Masaru;, Assignee: NGK Insulators Ltd. (Nagaya, JP) |
Loudness control circuit
Accordingly, an object of this invention is to provide a loudness control circuit in which the above-described difficulty that the weighting cannot be sufficiently achieved depending on the postion of... Read More
Inventors: Sakai, Koichi; Horie, Satoru;, Assignee: Toko Kabushiki Kaisha (Tokyo, JP) |
Pitch extraction apparatus for an acoustic signal waveform
In order to achieve the first object, a pitch extraction apparatus according to a first aspect of the present invention comprises pitch extraction means for extracting a pitch of an acoustic signal wa... Read More
Inventors: Fujii, Shigeki;, Assignee: Yamaha Corporation (Hamamatsu, JP) |
Output circuit
OF THE PREFERRED EMBODIMENT Now, a basic circuit structure employed in of the present invention will be described with reference to FIG. 2. A D/A converter 100 is a monopolar current output type D/A ... Read More
Inventors: Oura, Toshio;, Assignee: Nippon Electric Co., Ltd. (Tokyo, JP) |
Telephone line interface circuit
This invention provides a telephone line interface circuit for connecting telephone equipment provided with internal speech lines having predetermined DC impedance to external telephone lines, compris... Read More
Inventors: Tsurusaki, Masayuki; Kimura, Setsuo;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
Automatic power control circuit for controlling transmitting power of modulated radio frequency signal
OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described with reference to the drawings in which parts coincident with or corresponding to parts described in ... Read More
Inventors: Miyake, Atsushi;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Speech detection circuit
Accordingly, it is a general object of the present invention to provide a novel and useful speech detection circuit in which the problem described above is eliminated. Another and more specific object... Read More
Inventors: Komatsu, Noriyoshi; Aota, Masahiro; Komatsuda, Seiji; Ibuka, Toshihiro; Matsumoto, Yoshihiro;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Tube emulator amplifier system
I claim: 1. A solid state audio amplifier means for emulating a tube amplifier having a preamplifier means and output means for driving a load; wherein said preamplifier means includes tone control me... Read More
Inventors: Pritchard, Eric K.;, Assignee: |
Administration and utilization of secret fresh random numbers in a networked environment
OF THE PREFERRED EMBODIMENTS It should be understood that while the present invention is discussed hereinafter in terms of an exemplary system and method for obtaining digitally signed documents of a... Read More
Inventors: Cuccia, David; Epstein, Michael A.; Pasieka, Michael S.;, Assignee: Philips Electronics North America Corporation (New York, NY) |
Reduction of intermodulation
What is claimed is: 1. A low distortion opto-electronic light source for use with a signal source generating an A.C. signal and comprising, semiconductor light source means, compensating means having ... Read More
Inventors: Pan, Jing Jong; Arnold, Milton Phillip;, Assignee: Harris Corporation (Cleveland, OH) |
Circuit arrangement for eliminating waveform distortion of an angle-modulated signal transmitted over multipaths
The present invention has been developed in order to overcome the above mentioned drawbacks of the conventional type of multipath distortion compensation circuit. It is therefore an object of the pres... Read More
Inventors: Muraoka, Teruo; Yamazaki, Masami; Ishigaki, Yukinobu;, Assignee: Victor Company of Japan, Limited (Yokohama, JP) |
Measuring device with optical signal transmission
FIG. 1 shows an optically coupled measuring device according to the invention for transmitting and transforming an analog electric input signal U.sub.in into an analog electric output signal U.sub.ut... Read More
Inventors: Adolfsson, Morgan; Brogardh, Torgny;, Assignee: ASEA Aktiebolag (Vesteras, SE) |
Predistortion equalizing circuit
Another object of this invention is to provide a new and improved predistortion equalizer that utilizes the similarity of a semiconductor diode V-I characteristic and the optical power/current charact... Read More
Inventors: Baum, Peter N.;, Assignee: GTE Laboratories Incorporated (Waltham, MA) |
Optical communication of video information with distortion correction
I claim: 1. In an optical communication transmitter wherein a video signal is clamped, by a clamp circuit, with respect to a DC reference level and then coupled to a light-emitting diode, the light ou... Read More
Inventors: Smith, Clyde;, Assignee: |
Fiber-optic feed network using series/parallel connected light emitting opto-electronic components
What is claimed is: 1. A fiber-optic feed network comprising: means for supplying RF feed energy; a first string of series connected light emitting optoelectronic components, said string having a pres... Read More
Inventors: de La Chapelle, Michael; Hsu, Hui-Pin; Lewis, Gib F.; Mantele, John E.;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Frequency demodulator having circuit cancelling undesired signal components
An object of the present invention is to provide a frequency demodulation circuit which is capable of cancelling moire components generated from the lower sideband components of an FM signal. Another ... Read More
Inventors: Honjo, Masahiro;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Optical branching equipment and optical network using the same
It is therefore an object of the present invention to provide a low-cost optical branching equipment which permits switching of optical signal transmission lines without involving the conversion of an... Read More
Inventors: Aida, Kazuo; Nishi, Shigendo; Nakagawa, Kiyoshi;, Assignee: Nippon Telegraph and Telephone Corporation (Tokyo, JP) |
Audio Signal Processing 
