Data communications system using public key cryptography in a web environment
To solve this problem, in accordance with the present invention there is now provided a communications system for processing messages using public key cryptography with a private key unique to one or ... Read More
Inventors: Holloway, Christopher James;, Assignee: International Business Machines Corporation (Armonk, NY) |
Speech encoding apparatus and related decoding apparatus
It is an object of this invention to provide an improved speech encoding apparatus. It is another object of this invention to provide an improved decoding apparatus. A first aspect of this invention p... Read More
Inventors: Morii, Toshiyuki;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Double diaphragm electrostatic transducer each diaphragm comprising two plastic sheets having different charge carrying characteristics
In FIGS. 1 and 2, loudspeaker 10 is shown to comprise a pair of spaced, generally parallel diaphragms 11, each of which includes a first sheet 12 of plastic material, and an electrically conductive l... Read More
Inventors: Driver, Michael L.;, Assignee: |
Microphone system for producing signals for quadraphonic reproduction
A primary object of the present invention is to provide a system utilizing a microphone array and an encoding circuit for producing two composite signals equivalent to those required by known quadraph... Read More
Inventors: Bauer, Benjamin B.;, Assignee: CBS Inc. (New York, NY) |
Four dimensional acoustical audio system
I claim: 1. A multi-dimensional acoustical audio system for immersive observation by a binaural auditory system in an enclosure having a front wall adjoining, at a first corner, a left wall and, at a ... Read More
Inventors: Goldfarb, Barry S.;, Assignee: BSG Laboratories, Inc. (Deland, FL) |
Personal object detector with enhanced stereo imaging capability
As such, one object of the present invention is to provide an object detector which can be miniaturized and produced at a low cost while capable of creating a veridical stereo image of the object for ... Read More
Inventors: Burgess, David; Felsenstein, Lee; Saunders, Steven E.;, Assignee: Interval Research Corp. (Palo Alto, CA) |
Cryptosystem
What is claimed is: 1. A cryptosystem comprising: a communication apparatus; an encryptor for encrypting/decrypting communication data sent/received by the communication apparatus using a session key;... Read More
Inventors: Takeda, Noriko; Shinoda, Seiichi; Haseyama, Toshio;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Recognition procedure and an apparatus for carrying out the recognition procedure
We claim: 1. A recognition procedure including the steps of teaching a reference pattern to a machine-based recognition system by writing a first binary digit to each of a plurality of addressable dat... Read More
Inventors: Turner, Stephen J.; Lilley, John B.;, Assignee: Products From Ideas Ltd. (Basildon, GB2) |
Apparatus for discriminating information signals from noise signals in a communication signal
OF THE DRAWINGS FIG. 1 is a schematic diagram of an apparatus incorporating the preferred embodiment of the present invention. FIG. 2 is a schematic diagram of a first embodiment of the present inven... Read More
Inventors: Chen, Herbert M.; Hendrickson, Alan F.;, Assignee: Advanced Micro Devices, Inc. (Sunnyvale, CA) |
Method and apparatus for sending secure datagram multicasts
The present invention provides an improved simple key management scheme (SKIP) having particular application to datagram protocols, such as the Internet protocol (IP). In one embodiment, the present i... Read More
Inventors: Aziz, Ashar;, Assignee: Sun Microsystems, Inc. (Palo Alto, CA) |
Mounting arrangement for a position locating system
The above-stated problems and relates problems of the prior art solved with the principles of the present mounting arrangement. The rigid body having the exposed touch surface to which the localized f... Read More
Inventors: DeCosta, John; Mallos, James B.; Roe, David B.;, Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ) |
Amplifier device for a condenser microphone
It is an object of the invention to provide an amplifier with the above problems solved, or an amplifier capable of using even the FET common-source type buffer amplifier circuit with almost no effect... Read More
Inventors: Ikeda, Masaharu; Abe, Ryoji;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Multichannel matrix logic and encoding systems
What is claimed is: 1. In a UMX encoder comprising means for encoding multidirectional source signals in a plurality of at least two transmission channels with predetermined amplitude and phase relati... Read More
Inventors: Cooper, Duane H.;, Assignee: |
Expansion circuit for improved stereo and apparent monaural image
I claim: 1. An expander circuit for a multi-channel amplifier system including left and right amplifier channels respectively driving left and right speaker units, each channel including a variable ga... Read More
Inventors: Grodinsky, Robert M.;, Assignee: |
Universal automotive electronic radio with display for tuning or time information
OF A PREFERRED EMBODIMENT OF THE INVENTION The invention is better understood with reference to the figures wherein common numbers for the same or similar items have been used throughout to more clea... Read More
Inventors: Parmet, Bernard S.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Video disc encoding and decoding system providing intra-field track error correction
FIGS. 1 and 2 provide a comparison of a field-by-field track error correction method (FIG. 1) with the line-by-line correction method (FIG. 2). In FIG. 1, five adjacent tracks of a disc record are sh... Read More
Inventors: Palmer, Richard C.; Plotnick, Michael A.;, Assignee: RCA Corporation (Princeton, NJ) |
Sound reproducing apparatus for use in vehicle
In consideration of the above-described problems, the present invention provides a sound reproducing apparatus for use in a vehicle which is capable of making the sound pressure frequency response cur... Read More
Inventors: Terai, Kenichi; Saiki, Shuji; Murata, Kousaku; Satoh, Katsuaki; Kumura, Yoichi; Nakama, Yasutoshi; Ogawa, Michiko; Obata, Shuichi;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Control arrangement for electronic appliance
Accordingly, it is an object of the present invention to provide an electronic appliance that avoids the above-described disadvantages and difficulties of the prior art. More particularly, it is an ob... Read More
Inventors: Hanajima, Mitsuru; Yamamoto, Yoshinori; Matsumoto, Yasushi;, Assignee: Sony Corporation (Tokyo, JP) |
Color video display for audio signals
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A chrominance generator circuit for a television receiver having three chrominance in... Read More
Inventors: Liebler, Jerome E.; Rubinstein, Walter M.;, Assignee: |
Desk/wall mounted telephone subset
A telephone subset embodying the invention has a desk and wall mount capability and employs an east-to-west oriented handset. The subset base has a bearing at a first axis on which the subset housing ... Read More
Inventors: Sharp, Jr., James M.;, Assignee: ITT Corporation (New York, NY) |
Source data compression and decompression in code symbol printing and decoding
In accordance with the teachings of the present invention, a coded symbol encoding and decoding system provides data compression to reduce the size of a coded symbol. By separating the data compressio... Read More
Inventors: Liu, Larry Lingnan;, Assignee: Intermec Corporation (Everett, WA) |
Noise eliminating circuit
Accordingly, it is an object of the present invention to provide a noise eliminating circuit in which the above-mentioned disadvantages and drawbacks have been eliminated. In accordance with the above... Read More
Inventors: Sugai, Yoshiro; Kimura, Hiroyuki;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Method for generating a random number for the encoded transmission of data upon employment of a variable starting value
What is claimed is: 1. Method for generating a random number for the encoded transmission of data in a data exchange system having chip cards, each having a processor, using a secret cipher, a cipheri... Read More
Inventors: Martin, Guenter;, Assignee: Siemens Aktiengesellschaft (Munich, DE) |
High common mode relay multiplexer
I claim: 1. In a multiplexer having a plurality of signal channels, each of said channels having a plurality of signal lines, said lines including a high signal line, a low signal line and a guard lin... Read More
Inventors: Langan, Marion J.;, Assignee: Avco Corporation (Greenwich, CT) |
Loudspeaker having a voice coil and a piezoelectric feedback transducer
What is claimed is: 1. A loudspeaker comprising, a cone-shaped vibratory diaphragm having an inner portion secured to a coil form, a voice coil mounted on the coil form, means including the voice coil... Read More
Inventors: D'Hoogh, Guido Odilon Maurits;, Assignee: U.S. Philips Corporation (New York, NY) |
Speech recognition apparatus with means for preventing errors due to delay in speech recognition
The present invention has been made in consideration of the above conventional problem and has as its object to provide a speech recognition apparatus capable of eliminating a time difference upon spe... Read More
Inventors: Yahagi, Mitsuhisa; Tonegawa, Nobuyuki;, Assignee: Casio Computer Co., Ltd. (Tokyo, JP) |
Electronic musical instrument with manipulation plate
An object of this invention is to provide an electronic musical instrument capable of forming parameters for controlling the musical sounds by novel performance manipulation. Another object of this in... Read More
Inventors: Usa, Satoshi; Okamoto, Tetsuo; Aoki, Eiichiro;, Assignee: Yamaha Corporation (Hamamatsu, JP) |
Health club audio system
In accordance with this invention, there is provided an integrated audio amplifier system comprising a housing and, disposed within such housing, a microphone input circuit, a tape input circuit, a mu... Read More
Inventors: Kutner, Lawrence H.; Kovacs, Kazmer Z.;, Assignee: LAR Electronics Corp. (Niagara Falls, NY) |
Sound reproduction system
The sound system A of this invention is particularly adapted for reproducing music, irrespective of whether it is recorded or live, and like practically all sound reproduction systems, converts an au... Read More
Inventors: Skabla, Joseph;, Assignee: |
Speech aid apparatus for laryngectomees
What is claimed is: 1. Speech aid apparatus for laryngectomees, comprising a sound head consisting of a clamped hard diaphragm capable of being set in vibration by a plunger, a driver in the form of a... Read More
Inventors: Sickel, deceased, Helmut;, Assignee: Dr. Kuhn & Co. GmbH (Cologne (Merheim), DT) |
Audio Signal Processing 
