Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7680475 | Dynamic ASBR scheduler Systems and methodologies are described that facilitate dynamically scheduling frequency sets for reuse by user devices to reduce inter-cell interference by evaluating an overall scheduling metric for each user device in a wireless communication region. The overall ... | 03/16/2010 |
| 7454187 | Home agent system The home agent system of the present invention performs not only the process of managing the position information of a mobile node, but also the process of transferring a packet to the mobile node using the position information. The home agent system comprises one o... | 11/18/2008 |
| 7363018 | High speed electrical interconnect using an optically distributed carrier signal Described are a method and a device for high speed transmission of a data signal across an electrical interconnect in an integrated circuit. An optical carrier is modulated with a local oscillator signal at a modulation frequency substantially greater than the data ... | 04/22/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7209758 | Method and system for sharing and/or centralizing mobile positioning information and geospatial data for roaming mobile subscriber terminals A method and system for providing location based services (LBSs) to a mobile-subscriber terminal (MST) roaming in a serving network is provided. A location based service provider (LBSP) that is outside of the serving network receives from the serving system an MST-i... | 04/24/2007 |
| 7158459 | Apparatus for discriminating optical recording medium and method for discriminating optical recording medium It is an object of the present invention to provide an apparatus for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped ... | 01/02/2007 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7095101 | Supporting frame for surface-mount diode package A supporting frame is used to solidly bridge to the two metallic contacts of a surface mount diode chip. Any bending or twisting stress between the two contacts is borne by the supporting frame instead of the diode chip. Otherwise the stress may damage the diode chi... | 08/22/2006 |
| 7082171 | Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul... | 07/25/2006 |
| 7072390 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 07/04/2006 |
| 7072636 | Printed circuit doubly balanced mixer for upconverter A doubly balanced upconverter mixer includes a local oscillator balun circuit comprising juxtaposed foil elements on opposite sides of an insulated substrate with electrical interconnections between the foil elements. An IF balun circuit also comprises series tuned ... | 07/04/2006 |
| 7072649 | Multiple purpose antenna system A multiple purpose antenna system for installation on a highway truck to receive and transmit signals. The system includes an antenna for communication of electromagnetic frequency signals having multiple band widths, a multiplex unit coupled to the antenna having c... | 07/04/2006 |
| 7068121 | Apparatus for signal transitioning from a device to a waveguide A signal transmission apparatus includes a first waveguide, a second waveguide and a third waveguide. The transitions between the first, second and third waveguides are substantially co-impedance matched. The signal transmission apparatus may be a multi-port device,... | 06/27/2006 |
| 7068118 | Pulse modulator for nonradiative dielectric waveguide, and millimeter wave transmitter/receiver using the same A pulse modulator includes a circulator which comprises: two ferrite plates; a plurality of mode suppressors for transmitting therethrough an LSM mode electromagnetic wave while shutting off an LSE mode electromagnetic wave; and an impedance matching member mounted ... | 06/27/2006 |
| 7054296 | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ... | 05/30/2006 |
| 7039372 | Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ... | 05/02/2006 |
| 7027786 | Carrier and clock recovery using universal frequency translation Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. ... | 04/11/2006 |
| 7010286 | Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive o... | 03/07/2006 |
| 7006837 | Electronic apparatus An electronic (or computer) apparatus (10) has a current position data output unit (13) and an area data output unit (14) responsive to current position data from the current position data output unit for producing specific country data represen... | 02/28/2006 |
| 7006805 | Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a sin... | 02/28/2006 |
| 6993312 | Double balanced diode mixer with high output third order intercept point A double balanced mixer consisting of an RF balun, a local oscillator balun and a diode “quad” bridge circuit connected between the two baluns and where the IF output is taken at the center tap of the RF balun secondary transformer. A second harmonic termination... | 01/31/2006 |
| 6956447 | Directional coupler using non-radiative dielectric waveguide A dictionary coupler using a non-radiative dielectric waveguide is disclosed. Particularly, a millimeter wave band non-radiative dielectric waveguide directional coupler using a multiple-hole structure in which two parallel NRD waveguides located between upper and l... | 10/18/2005 |
| 6946389 | Method of forming buried conductors Buried conductors within semiconductor devices and structures, and methods for forming such conductors, are disclosed. In one embodiment of the invention, a semiconductor structure includes a substrate and a plurality of conductive elements buried within the substra... | 09/20/2005 |
| 6947451 | Network layer support to enhance the transport layer performance in mobile and wireless environments In a router or packet processing node supporting Mobile IP, a method for causing packets to be retransmitted from a sender to a mobile node is disclosed. A plurality of packets having associated update information are received. The packets are intended for the mobil... | 09/20/2005 |
| 6937482 | Compact, high efficiency, high isolation power amplifier A power feedforward amplifier uses integral cavities to provide RF isolation between subcircuits of the power amplifier. The chassis includes a main chassis body and a lid structure adapted to couple with the chassis body and define the subcircuit cavities. The inne... | 08/30/2005 |
| 6931246 | Line coupling structure, mixer, and receiving/transmitting apparatus comprised of suspended line and dielectric waveguide A line coupling structure for coupling a dielectric waveguide to a suspended line has the dielectric waveguide including dielectric strips and two conductor plates that are approximately parallel to each other, the dielectric strips and a circuit board being sandwic... | 08/16/2005 |
| 6871056 | Non-radiative dielectric waveguide mixer using a ring hybrid coupler Disclosed is a NRD waveguide mixer adopting a ring hybrid coupler applicable to a small-sized and high functional millimeter wave receiving/transmitting device. The NRD waveguide has a housing including two parallel conductive plates. The ring hybrid coupler is inst... | 03/22/2005 |
| 6832081 | Nonradiative dielectric waveguide and a millimeter-wave transmitting/receiving apparatus A NRD guide includes a pair of parallel plate conductors opposed to each other at a spacing equal to or shorter than half the wavelength of a high-frequency signal to be transmitted and having opposing inner surfaces whose arithmetic average roughness Ra satisfies 0... | 12/14/2004 |
| 6810241 | Microwave diode mixer A mixer having a diode quad, and which receives two RF signals at an RF input balun having primary and secondary windings. A resonant circuit arrangement includes at least a capacitor circuit element in parallel with the secondary winding to form an open circuit ter... | 10/26/2004 |
| 6788918 | Transmission line assembly, integrated circuit, and transmitter-receiver apparatus comprising a dielectric waveguide protuding for a dielectric plate In a transmission line assembly, a dielectric plate has a continuous protruding portion on at least one of the surfaces thereof so as to form a convex section, electrodes are formed on both of the surfaces of the dielectric plate including the outer surface of the p... | 09/07/2004 |
| 6427069 | Balanced all-wavelength sub-millimeter microwave subharmonic mixer A mixer converts input power at high-frequency RF into output power at a different and much lower frequency IF, with the assistance of another high-frequency oscillator (LO). Typically, a very low IF frequency requires an LO that approximates the RF frequ... | 07/30/2002 |
| 6301464 | Satellite broadcasting converter In a satellite broadcasting converter, converting portions project from an inner face portion of a horn section, and therefore, the inner face of a waveguide section, the inner face portion of the horn section, and the converting portions can be formed by... | 10/09/2001 |
| 6198912 | Frequency converter for the application on millimetric radio waves The following description regards a frequency converter (1) for applications on millimetric radio waves. The circuit structure comprises a diplexer filter realized in thin film on an alumina layer connected to a balun set up by a quartz plate on which two... | 03/06/2001 |
| 5987315 | Diode circuit in dielectric waveguide device, and detector and mixer using the diode circuit A diode circuit in a dielectric waveguide device designed to improve the facility with which a circuit substrate is mounted in the dielectric waveguide, to make matching between a dielectric waveguide and a diode easier, and to reduce conversion losses, a... | 11/16/1999 |
| 5959592 | "IF" bandstacked low noise block converter combined with diplexer An arrangement is provided for combining the video and audio signals from a satellite antenna with other auxiliary input signals producing a frequency stacked band arrangement for transmission by a single cable to a satellite receiver or TV monitor locate... | 09/28/1999 |
| 5953644 | Microwave transmission system In a microwave transmission system a microwave signal is transmitted by a transmitter (1) using an antenna (2) to a receiver (4) which employs an antenna (3). The received signal is coupled to a mixer (17) via a waveguide section (15) having a cut off fre... | 09/14/1999 |
| 5794135 | Millimeter wave mixer realized by windowing The invention concerns a millimeter wave mixer realized by windowing, and includes a coplanar conductive line (320) that is produced in plating (212) on a substrate (211) disposed in a rectangular waveguide. The coplanar line (320) divides the plating (21... | 08/11/1998 |
