Facility for combining and amplifying two broadband signals
It is therefore an object of the invention to provide a facility which is suitable for combining and amplifying two broadband signals that are received from different transmission networks and are tra... Read More
Inventors: Steigenberger, Ulrich; Hagele, Volker;, Assignee: Alcatel (Paris, FR) |
Electronic musical instrument for conducting an arpeggio performance of a stringed instrument
In view of the foregoing, it is therefore an object of the present invention to provide an electronic musical instrument having an arpeggiator function capable of readily making up desired arpeggio pa... Read More
Inventors: Hirata, Takashi;, Assignee: Roland Kabushiki Kaisha (Osaka, JP) |
Digital automatic gain control, as for a receiver
What is claimed is: 1. A gain control for a gain-controllable circuit comprising: means for converting an output signal from the gain-controllable circuit into digital data; a first digital comparator... Read More
Inventors: Balaban, Alvin Reuben;, Assignee: Sarnoff Corporation (Princeton, NJ) |
Method for interconnecting CMOS chip types
I have provided a variable voltage driver circuit that is located off chip that produces a variable voltage output swing off of a single voltage power supply. The driver circuit is logically configura... Read More
Inventors: Livolsi, Robert R.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Integrable quadrature FM demodulator using fewer signal pins
Accordingly, an object of the present invention is to provide a quadrature type FM demodulator device for detecting sound signals which requires a small number of signal pins for the sound intermediat... Read More
Inventors: Goto, Kuniaki;, Assignee: Tokyo Shibaura Denki Kabushiki Kaisha (JP) |
Volume control for CATV and method therefor
The above and other objects and advantages of the present invention are provided by, among other things, a sound carrier demodulator which demodulates the intercarrier sound signal from the RF televis... Read More
Inventors: Reid, Jr., Sydney J.; Zlotnick, Fredrick;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Method and apparatus for reducing signal processing requirements for transmitting packet-based data with a modem
FIG. 3 is a block diagram of a receiver circuit 300 of a modem in accordance with one embodiment of the present invention. Receiver circuit 300 includes A/D converter 301, resampler 302, equalizer 30... Read More
Inventors: Yamano, Larry C.; Holloway, John T.; Frank, Edward H.; Mallory, Tracy D.; Corry, Alan G.; Forrest, Craig S.; Peterson, Kevin H.; Robinson, Timothy B.; Snow, Dane;, Assignee: Broadcom HomeNetworking, Inc. (Sunnyvale, CA) |
Gain linearization with coplanar waveguide
In FIG. 1, a predistortion linearizer 20 is constructed in accordance with the invention, and includes two channels of identical physical configuration, the two channels being a linear channel 22 and... Read More
Inventors: Reisner, Russ A.; Copeland, Wilbert; Berman, Arnold; Curello, Charles C.;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Channel correction transceiver
According to the invention there is provided a transceiver including a transmitter for transmitting base band signals at a first operating frequency. The transmitter includes a lookup table for storin... Read More
Inventors: Cyze, Baruch; Greenberger, Haim; Glassman, Gabriel E.;, Assignee: State of Israel (Haifa, IL) |
Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier
In accordance with the present invention, advantage is taken of continued improvements in the speed and memory capacity of digital signal processors and application specific integrated circuit (ASIC) ... Read More
Inventors: Proctor, James A.; Mucenieks, Lance Todd;, Assignee: Spectrian (Sunnyvale, CA) |
Predistortion system and method using analog feedback loop for look-up table training
OF A PREFERRED EMBODIMENT The present invention provides a predistortion system and method for using an analog feedback loop that generates and adapts a look-up table that provides error correction t... Read More
Inventors: Khan, Andrew Merritt; Opas, George Francis;, Assignee: Motorola, Inc. (Schaumburg, IL) |
FM demodulator including tuning of a filter and detector
OF THE PREFERRED EMBODIMENT A demodulator circuit embodying the invention is shown in FIG. 2 and comprises an intermediate frequency bandpass filter 10 (IF BPF) which receives and filters an incoming... Read More
Inventors: Mattisson, Sven; Haartsen, Jacobus;, Assignee: Telefonaktiebolaget LM Ericsson (Stockholm, SE) |
Earth station transmission power control system for keeping an EIRP of down link signals constant irrespective of weather
We claim: 1. A transmission power control system for use in at least one first earth station of a satellite network which includes at least one second earth station for sending a pilot signal to a sat... Read More
Inventors: Oshima, Goro; Ono, Satoru; Shimada, Yasuhisa;, Assignee: Nippon Electric Co., Ltd. (Tokyo, JP) |
Satellite communication system
Briefly, there is provided a satellite communication system in which a satellite receives a signal on a uplink carrier frequency, frequency translates it, and transmits the signal at a downlink carrie... Read More
Inventors: McCoskey, John S.;, Assignee: GTE Spacenet Corporation (McLean, VA) |
Correlator, synchronizer provided with the correlator, and fast frequency hopping spread spectrum receiver provided with the synchronizer
The present invention solves such conventional problems, and aims at providing a fast frequency hopping spread spectrum receiver capable of performing the synchronization acquisition of the hopping se... Read More
Inventors: Takakusaki, Keiji;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
System and apparatus for recording and accessing information received over a phone network using a premises phone for control
OF THE INVENTION Referring now to FIG. 1, there is illustrated generally at 10 a system of the present invention for recording and accessing information received over a phone network 12 where at leas... Read More
Inventors: Sizer, II, Theodore;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Accessing a video message via video snapshots
This invention is directed to solving these and other problems and disadvantages of the prior art. According to the invention, a video message is presented to a recipient of the message as follows. On... Read More
Inventors: Brunson, Gordon R.;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Multiple dwelling unit interactive audio/video distribution system
The present invention is an audio/video distribution system in which video on demand programming and interactive services are normally jammed (or interdicted) by interdiction field units associated wi... Read More
Inventors: Stoel, Leon P.; Hills, Vernon E.; Bankers, David M.; Truckenmiller, Douglas D.;, Assignee: LodgeNet Entertainment Corporation (Sioux Falls, SD) |
Transmitter, receiver, communication system, and communication method employing spread spectrum communication technique
The present invention was developed in order to address the foregoing issue, and is intended to provide a transmitter, a receiver, a communication system, and a communication method which offer improv... Read More
Inventors: Kato, Hideki; Yamazaki, Shinichi; Ugawa, Hideaki; Seki, Kazuhiko;, Assignee: Uniden Corporation (Tokyo, JP) |
Video signal processing circuit with comb filter
The primary object of the present invention is to provide a video signal processing circuit which utilize a comb filter without signal delay. Another object of the present invention is to provide a no... Read More
Inventors: Sato, Ichitaro;, Assignee: Sony Corporation (Tokyo, JP) |
Comb filters
According to the present invention there is provided a filter circuit for processing a composite video signal including a chrominance component and a luminance component, said filter circuit comprisin... Read More
Inventors: Andrews, Gary D.;, Assignee: Tektronix, Inc. (Beaverton, OR) |
Spectrum distribution adaptive luminance/color signal separating device
It is an object of the present invention to provide a spectrum distribution adaptive luminance/color signal separating device which can prevent dot crawling or blurring of color signal due to cross-co... Read More
Inventors: Hong, Sung H.;, Assignee: Goldstar Co., Ltd. (Seoul, KR) |
Apparatus and method for generating on-screen-display messages using on-bit pixels
The invention concerns an apparatus and concomitant method for generating OSD messages by constructing a valid OSD bitstream having a 40 plurality of "one-bit" pixels. More specifically, in accordance... Read More
Inventors: Knox, Michael Dwayne; Dinwiddie, Aaron Hal;, Assignee: Thomson Licensing S.A. (Boulogne Cedex, FR) |
Receiver for spread spectrum communication
In order to achieve the above object, a receiver for spread spectrum communication according to this invention comprises a correlator consisting of a first convolver and a second convolver, a same rec... Read More
Inventors: Akazawa, Shigeo; Mori, Masaharu; Hamatsu, Masahiro;, Assignee: Clarion Co., Ltd. (Tokyo, JP) |
Ping-pong communication method and apparatus
In accordance with the invention, full duplex communication is achieved over a single communication channel by adjusting the timing and frequency of the data exchange at each station so as to avoid da... Read More
Inventors: Wissman, Charles H.;, Assignee: Tempo Research Corporation (Vista, CA) |
Method and apparatus for direct re-acquisition of precision-code after a short power interruption
OF THE PREFERRED EMBODIMENT FIG. 1 illustrates an authorized dual-frequency portable handheld navigation satellite receiver embodiment of the present invention, referred to by the general reference n... Read More
Inventors: Turney, Paul F.;, Assignee: Trimble Navigation Limited (Sunnyvale, CA) |
Rate detection apparatus and method for variable rate speech encoding
A method of detecting the data rate of a received digital signal is provided. The method generally includes the steps of decoding a received signal at each of a plurality of possible rates to produce ... Read More
Inventors: Guey, Jiann-Ching;, Assignee: Ericsson Inc. (Research Triangle Park, NC) |
Apparatus and associated method for communicating multimedia information upon a communication link
The present invention, accordingly, advantageously provides apparatus, and an associated method, for converting real-time multimedia information formatted in packet-data form, into a form to facilitat... Read More
Inventors: Le, Khiem;, Assignee: Nokia Corporation (Espoo, FI) |
Method for the recognition and operation of virtual private networks (VPNs) over a wireless point to multi-point (PtMP) transmission system
OF THE PREFERRED EMBODIMENTS I. An Example Environment The present invention is described in terms of an example environment. The example environment uses a fixed wireless point-to-multi-point (PtMP)... Read More
Inventors: Jorgensen, Jacob W.;, Assignee: Malibu Networks, Inc. (El Dorado Hills, CA) |
Method and apparatus for performing IP-ID regeneration to improve header compression efficiency
The present invention provides a method and apparatus for performing IP-ID regeneration to improve header compression efficiency. The present invention is operable in a system having a transmitter whi... Read More
Inventors: Le, Khiem; Liu, Zhigang;, Assignee: Nokia Corporation (Espoo, FI) |
Multiplexer-related 
