Differential transimpedance amplifier
The present invention reduces the input impedance and increases the bandwidth of a differential transimpedance amplifier. The invention comprises a pair of input contacts, summing means, negative feed... Read More
Inventors: Giacomini, Joseph D.;, Assignee: VTC, Inc. (Bloomington, MN) |
Method of and apparatus for modulation dependent signal amplification
Referring to FIG. 1, an example transmitter 10 is shown. The transmitter 10 may preferably be a cellular telephone transmitter or any other wireless type transmitter capable of transmitting informati... Read More
Inventors: Klomsdorf, Armin; Winkelmann, Luke; Schwent, Dale Gerard; Greene, Matthew;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Integrated circuit for audio enhancement system
It is therefore an object of the invention to provide an improved system for enhancement of the aesthetic qualities of reproduced audio, particularly music. It is a further object of the invention to ... Read More
Inventors: Katz, Joel; Kath, Miles;, Assignee: HDA Entertainment, Inc. (Timonium, MD) |
Non malleable encryption apparatus and method
The present invention uses an encryption technique and a signing technique to provide a non-malleable encryption. An encryption processor takes a data message and produces an encryption using an encry... Read More
Inventors: Jakobsson, Bjorn Markus;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Method and system for providing secure subscriber content data
Therefore, it is an object of the present invention to provide an interactive multimedia personal service system in which a user utilizes a smart-card activated and enabled remote control device to in... Read More
Inventors: Ikonen, Ari M.; Okkonen, Harri; Heinonen, Pekka J.;, Assignee: Nokia Corporation (Espoo, FI) |
Group key distribution
OF THE PREFERRED EMBODIMENT The present invention provides a group key distribution technique useful for both unicast and multicast applications. Unicast (or point cast) operations transmit messages ... Read More
Inventors: Harkins, Dan;, Assignee: Cisco Technology, Inc. (San Jose, CA) |
System for simplifying the implementation of specified functions
The present invention overcomes the deficiencies mentioned above by providing a machine, method and medium for implementing functions using an input device in a manner that enhances efficient operatio... Read More
Inventors: Domanik, Richard A.; Gruber, Dennis W.; Mayer, William J.;, Assignee: AccuMed International, Inc. (Chicago, IL) |
Reactive sound absorber
The invention relates to a reactive sound attenuator consisting of a cavity with sound-proof limits and including at least one membrane, an acoustic sensor in the immediate vicinity in or on said memb... Read More
Inventors: Krueger, Jan; Leistner, Philip; Fuchs, Helmut; Lippold, Roland;, Assignee: Fraunhofer-Gesellschaft (Munich, DE) |
Tracking switchmode power converter for telephony interface circuit
Pursuant to the present invention, this power consumption problem is substantially diminished by monitoring the line voltage, and using a reduced complexity switchmode power converter to control the v... Read More
Inventors: Boudreaux, Jr., Ralph R.;, Assignee: Adtran, Inc. (Huntsville, AL) |
Digital BTSC compander system
OF THE INVENTION The BTSC Specification is intended to serve the industry in the form of recommendations for anyone wishing to practice multichannel television sound (MTS) in accordance with the BTSC... Read More
Inventors: Easley, Matthew Frank;, Assignee: Antec Corporation (Duluth, GA) |
Method and apparatus for spectral shaping in signal-point limited transmission systems
OF THE INVENTION Methods and apparatus for spectral shaping in signal-point limited transmission systems are disclosed. In the following description, various aspects of the present invention are pres... Read More
Inventors: Olafsson, Sverrir; Zhou, Zhenyu; Zhang, Xuming;, Assignee: Conexant Systems, Inc. (Newport Beach, CA) |
Apparatus for facilitating the making of a calling card telephone call
An apparatus for facilitating the making of a calling card telephone call includes a central processing unit (CPU) and a storage device for storing access data to enable access to a central telephone ... Read More
Inventors: Wulkan, Itzhak;, Assignee: CallManage, Ltd. (Kfar Sava, IL) |
Loudspeaker unit adapted to environment
An object of the present invention is to provide a loudspeaker unit adapted to the environment and requires no particular procedure for correction of the acoustic characteristic thereof even if the in... Read More
Inventors: Sasaki, Atsushi;, Assignee: NEC Corporation (JP) |
Subband coded digital transmission system using some composite signals
What is claimed is: 1. A digital transmission system, for producing a replica of a digital signal comprising at least a first component and a second component, comprising: an encoder including analysi... Read More
Inventors: Lokhoff, Gerardus C. P.; Dehery, Yves-Francois; Stoll, Gerhard J.; Theile, Gunther;, Assignee: U.S. Philips Corporation (New York, NY) |
Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder
I claim: 1. An encoder of one or more channels of input signals comprising signal samples, said encoder comprising splitband means for generating a subband signal block comprising a plurality of subba... Read More
Inventors: Todd, Craig C.;, Assignee: Dolby Laboratories Licensing Corporation (San Francisco, CA) |
Montgomery reduction apparatus
OF THE INVENTION A Montgomery reduction apparatus and method of the present invention aim at more efficiently implementing Montgomery reduction as an algorithm for efficient remainder calculation. Mo... Read More
Inventors: Shimbo, Atsushi; Kawamura, Shinichi;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
Audio system for vehicular application
Systems and methods in accordance with the invention enable virtually infinite segmentation and modification of the audio frequency spectrum by transfer of signals from a source in both parallel and s... Read More
Inventors: Gale, Vannin; Kwang, David;, Assignee: Concept Enterprises, Inc. (Vernon, CA) |
Medium having photographically recorded digital audio bits
The invention is a medium (such as motion picture film) having digital audio signals photographically recorded thereon. The medium can be motion picture film. Multiple, photographically recorded digit... Read More
Inventors: Kohut, Michael; Wood, Dana; Wood, Paul; Taylor, Jeff; Reese, Leroy; Tanielian, Aram; Waas, Jaye M.; Waring, Mark; Carlsen, George;, Assignee: Sony Corporation (JP); Sony Electronics Inc. (Park Ridge, NJ) |
Digital hearing aid
Therefore, it is an object of the present invention to provide a digital hearing aid which can output a voice easy to hear for a user. According to the first aspect of the present invention, a digital... Read More
Inventors: Ishige, Ryuuichi; Mitome, Yukio;, Assignee: Nec Corporation (Tokyo, JP) |
Apparatus for creating 3D audio imaging over headphones using binaural synthesis
Accordingly, it is an object of the present invention to provide an apparatus for creating three-dimensional audio imaging during playback over headphones using a binaural synthesis approach. It is an... Read More
Inventors: Cashion, Terry; Williams, Simon;, Assignee: QSound Labs, Inc. (Alberta, CA) |
System, apparatus, and method for improving speech quality in multi-party devices
A method, system, and apparatus are provided, such that cross talk terms may be removed from speech signals in a multi-party conference system, having a plurality of users. This is accomplished by fir... Read More
Inventors: Eriksson, Anders; Ekudden, Erik;, Assignee: Telefonaktiebolaget LM Ericsson (publ) (Stockholm, SE) |
Speaker excursion control system
OF THE PREFERRED EMBODIMENT Referring initially to FIG. 1, there is shown a sound system which may be incorporated into a vehicle. The system includes a power supply 10 coupled to the vehicle's batte... Read More
Inventors: Clark, David L.;, Assignee: Prince Corporation (Holland, MI) |
Portable information terminal device with radio selective-calling receiver
In view of the foregoing, it is an object of the present invention to provide a portable information terminal device with a radio selective-calling receiver for improving reception sensitivity deterio... Read More
Inventors: Tsukuda, Naoki;, Assignee: NEC Corporation (Tokyo, JP) |
Digital graphic equalizer
An object of the invention is to remedy the major problems of prior digital graphic equalizers and, in particular, to provide an improved digital graphic equalizer including a digital signal processor... Read More
Inventors: Kitazato, Naohisa; Hamada, Osamu;, Assignee: Sony Corporation (Tokyo, JP) |
Electric artificial larynx
It is an object of the present invention which has been made to solve the above problem to provide an electric artificial larynx which improves operation efficiency by eliminating the trouble of bring... Read More
Inventors: Ifukube, Tohru; Koikeda, Akira; Sugai, Yasunori; Takabatake, Shinichi; Yamaguchi, Yoshinori;, Assignee: Densi, Inc. (Sapporo, JP) |
Audio reproducing apparatus corresponding to picture
In view of such aspects, an object of the present invention is to provide an audio reproducing apparatus corresponding to a picture which localizes a position of a reproduced sound image obtained from... Read More
Inventors: Inanaga, Kiyofumi; Yamada, Yuji;, Assignee: Sony Corporation (Tokyo, JP) |
Electro-optical device
With the above-mentioned problems with such prior arts in view, the present invention has been proposed, and its object is to provide an electro-optical device applied as an image display device that ... Read More
Inventors: Miyazaki, Shigeki;, Assignee: Sony Corporation (Tokyo, JP) |
Method of transmitting an audio signal
What is claimed is: 1. A method of transmitting an analog audio signal in digital form to be reconverted to analog form, comprising the steps of: converting an analog audio signal to a first digital s... Read More
Inventors: Schroder, Ernst; Voessing, Walter;, Assignee: Deutsche Thomson-Brandt GmbH (Villingen-Schwenningen, DE) |
Hot water tank assembly
The present invention provides in a first embodiment, a hot water heater for a portable dispenser containing a storage tank for containing water. The heater further includes a heating element for prov... Read More
Inventors: Eckman, Charles M.;, Assignee: Energy Convertors, Inc. (Dallas, PA) |
Cryptographic key split combiner
It is therefore an object of the present invention to provide a process and apparatus for assembling keys which provides added security against compromising a communication by unauthorized entities. I... Read More
Inventors: Scheidt, Edward M.; Wack, C. Jay;, Assignee: TecSec, Inc. (Vienna, VA) |
Audio Signal Processing 
