Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7421252 | Center frequency control of an integrated phase rotator band-pass filter using VCO coarse trim bits A phase rotator for a Cartesian feedback power amplifier in a transmitter final stage contains an integrated voltage controlled tunable resonant circuit accomplishing band-pass filtering at a center frequency selected by local oscillator (LO) coarse trim control sig... | 09/02/2008 |
| 7421251 | Precise frequency generation for low duty cycle transceivers using a single crystal oscillator An apparatus and method for calibrating a non-crystal oscillator in a transceiver unit using a crystal-oscillator includes the step of establishing a time base based upon oscillations of the crystal oscillator. A comparison of the number of oscillations for the non-... | 09/02/2008 |
| 7369816 | Highly accurate temperature sensor employing mixed-signal components A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 05/06/2008 |
| 7359684 | Wireless communication system with variable intermediate frequency transmitter A wireless communication device (UST), comprising an input for receiving baseband data (I, Q) in a first signal having a first frequency. The device also comprises circuitry (681, 682) for increasing the first frequency, to form a... | 04/15/2008 |
| 7352775 | Partial duplex frequency domain modulator system and method In a multi-carrier transmission scheme (frequency domain multiplexed—FDM), a single high rate data stream is split into multiple lower rate data streams each transmitted over a different carrier (e.g., a tone or bin). The data rate possible from a multiple-carrier... | 04/01/2008 |
| 7349672 | Digital signal transceiver A digital signal transceiver includes a frequency modulator for outputting a high-frequency signal frequency-modulated with a digital signal input thereto, a power amplifier, an antenna terminal, and an antenna switch. The antenna switch includes a first branch port... | 03/25/2008 |
| 7336646 | System and method for synchronizing a transport stream in a single frequency network A single frequency network (SFN) system is provided, where the system includes a head-end and a plurality of transmitters. The head-end is capable of calculating timing information based upon a time reference having a second resolution. Thereafter, the head-end is c... | 02/26/2008 |
| 7315601 | Low-noise sigma-delta frequency synthesizer A sample-and-hold (SAH) phase detector (PD) is clocked in such a way (using a reverse clocking mode) so as to avoid quantization noise increases due to folding that is generally associated with conventional charge pump based phase detectors. The PD is clocked with a... | 01/01/2008 |
| 7299006 | Adaptive radio transceiver An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/20/2007 |
| 7221930 | Cellular phone capable of detecting counterfeit currency or lighting and method of the same The present invention is to provide a cellular phone capable of detecting counterfeit currency or lighting comprising a counterfeit currency detection bulb, a lamp and a keypad, wherein the keypad includes a first dual key in association with the counterfeit currenc... | 05/22/2007 |
| 7184714 | Frequency domain estimation of IQ imbalance in a wireless OFDM direct conversion receiver using loopback connection An OFDM transceiver has a transmitter, a receiver, and a loopback switch. The loopback switch configured is for selectively establishing a physical connection between an output terminal of the transmitter and an input terminal of the receiver. The transmitter is con... | 02/27/2007 |
| 7177621 | Wireless communication medium and method for operating the same A wireless communication medium includes an antenna, an analog signal processor, a digital signal processor, and a central processing unit & logic module. The antenna transmits and receives a signal to and from an external apparatus. The analog signal processor conv... | 02/13/2007 |
| 7171177 | Communication apparatus and method using human body as medium Provided is to a communication apparatus and method using a human body as a medium, in which secure/normal data signals are transmitted/received to the inside and outside of a human body respectively, through at least two different frequency channels classified acco... | 01/30/2007 |
| 7136622 | Adaptive radio transceiver with noise suppression An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/14/2006 |
| 7110725 | Method and apparatus for multipath signal detection, identification, and monitoring for wideband code division multiple access systems Methods to generate a mobile time reference are provided. A representative method includes providing a high frequency clock, providing a low frequency clock, generating a mobile time reference using the high frequency clock, maintaining the mobile time reference usi... | 09/19/2006 |
| 7082293 | Adaptive radio transceiver with CMOS offset PLL An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 07/25/2006 |
| 7065329 | Half duplex radio transceiver with low IF receiver A half duplex radio transceiver comprises a transmitter (100) and a low IF receiver (200). The difference between the transmit frequency and the receive frequency is equal to the low IF. A common frequency generator (300) is shared between the t... | 06/20/2006 |
| 7050780 | Radio frequency tranceiver A RF transceiver for AMPS communication includes: a baseband processor for generating a transmission intermediate frequency signal and processing a reception intermediate frequency signal; a local oscillator for generating a local oscillation signal in transmission ... | 05/23/2006 |
| 7043269 | Communication card and communication device A communication card or communication device is provided that includes an antenna for transmitting/receiving communication waves; a variable matching unit which can vary a circuit parameter; a directional coupling unit for extracting a reflected signal from the ante... | 05/09/2006 |
| 7035596 | Multi-mode cellular phone terminal In such a multi-mode cellular phone terminal, a transmitter, a receiver and a synthesizer are composed of common hardware that can be used in a plurality of communications systems. A channel CODEC, a modulator, an equalizer and memory for signal processing programs ... | 04/25/2006 |
| 6987951 | Transceiver for duplex operation A transceiver for use in universal mobile telecommunication systems is specified which exhibits an intermediate frequency in a range from 0 to 0.5 megahertz at the receiver end and an intermediate frequency of 190 megahertz at the transmitting end. The configuration... | 01/17/2006 |
| 6980776 | Transceiver apparatus The present invention provides a transceiver apparatus that permits miniaturization even when the antenna thereof is an unbalanced circuit and the transmitter circuit section and receiver circuit section thereof are balanced circuits. The transceiver apparatu... | 12/27/2005 |
| 6975838 | Adaptive radio transceiver with noise suppression An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 12/13/2005 |
| 6961546 | Adaptive radio transceiver with offset PLL with subsampling mixers An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/01/2005 |
| 6912376 | Mobile phone transceiver A multiple band transceiver (10) uses a fixed frequency oscillator (34) to generate a reference signal in both receive, mode and transmit mode for each frequency band. A dual-band variable oscillator (26) is used to tune signals in receive and transmit mode. The use... | 06/28/2005 |
| 6885848 | Apparatus for preventing loss of portable telephone using a bluetooth communication protocol and control method thereof Disclosed is an apparatus for preventing the loss of a portable telephone using a bluetooth communication and the control method thereof capable of preventing the loss of the portable telephone. According to the control method, the portable telephone periodically me... | 04/26/2005 |
| 6847812 | Frequency-stabilized transceiver configuration A transceiver configuration has an integrated circuit (IC) with an A/D and/or D/A converter, a VCO with a reference oscillator, which provides a sampling clock for the A/D and/or D/A converter, and a digital data processing circuit. The IC is connected to a radio-fr... | 01/25/2005 |
| 6832077 | Microwave isolator A microwave isolator including a driving circuit and a receiving circuit, wherein the driving circuit receives an input signal from a first isolated circuit and generates a corresponding radio frequency (RF) signal and the receiving circuit detects and decodes the c... | 12/14/2004 |
| 6829550 | Calibration of received signal strength indication within a radio frequency integrated circuit Calibration of received signal strength indication (RSSI) within a radio frequency integrated circuit (RFIC) begins by concurrently enables a transmitter portion and receiver portion. With both the transmitter and receiver enabled, the RFIC provides a zero input to ... | 12/07/2004 |
| 6665539 | Position location with low tolerance oscillator The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method of performing position location in a wireless subscriber unit having ... | 12/16/2003 |
| 6526270 | IrDA modulation/demodulation integrated circuit device An IrDA modulation/demodulation integrated circuit device designed for use in a portable telephone receives a clock used in a base-band integrated circuit device for processing a base-band signal, and converts the frequency of the received signal by using... | 02/25/2003 |
| 6434401 | Method for the setting of a multiband mobile telephony transmitter-receiver and mobile telephone thus obtained To make a multiband transmitter-receiver without having to greatly increase the number of oscillators used for the modulation and demodulation of signals located in frequency bands that are very different from one another, a pair (13, 14) of programmable ... | 08/13/2002 |
| 6115584 | Transmitter-receiver for use in broadband wireless access communications systems A transmitter-receiver includes a transmitting circuit for providing an output by converting the frequency of a transmission signal input thereto, a receiving circuit for providing an output by converting the frequency of a received signal input thereto, ... | 09/05/2000 |
| 5566360 | Transmitter/receiver configuration for higher frequencies A integratable transmitter/receiver configuration for higher frequencies includes a reception path mixer multiplying a reception signal and a carrier frequency signal with one another. A controlled first intermediate frequency oscillator can be turned off... | 10/15/1996 |
| 5511236 | Half duplex RF transceiver A radio frequency (RF) transceiver for modulating and demodulating RF signals with a direct modulation transmitter and a dual intermediate frequency (IF) receiver, respectively, includes a local oscillator, three frequency converters, a demodulator, a car... | 04/23/1996 |
| 5432779 | Time division multiplex transmitting/receiving system A time division multiplex transmitting/receiving system converts a signal to be transmitted into a signal having a predetermined frequency in a predetermined time slot, which is transmitted as a transmission signal, and receives a transmitted signal havin... | 07/11/1995 |
| 5390363 | Transmitter and receiver circuit and method therefor A circuit for alternately providing a first frequency to a receiver stage (20) and a second frequency to a transmitter stage (25) of a transmitter and receive circuit (11). The circuit comprises an oscillator (38), a first switch (33), a second switch (42... | 02/14/1995 |
| 5319802 | Device for the exchange of data by electromagnetic waves In order to increase the sensitivity and range of a system for the exchange of data by microwaves between a fixed station, or reader, and a mobile station, or badge, the modem of the badge includes an oscillator. A single transistor works, under a first b... | 06/07/1994 |
| 5291207 | Method for estimating position of objective obstacle for vehicle In a vehicle equipped with a distance measuring unit capable of measuring a distance between the subject vehicle and an objective obstacle, the objective obstacle is detected along a widthwise direction of the vehicle by the distance measuring unit. Detec... | 03/01/1994 |
| 4672379 | Doppler radar transceiver A doppler radar transceiver comprising a transceiving module including a reflex circuit having a single transistor which simultaneously acts as both an oscillator and an amplifier. A capacitor and a resistor are provided in the transistor base element bia... | 06/09/1987 |
