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 |
| 8081948 | Analog signal processor in a multi-gigabit receiver system An analog multi-gigabit receiver and/or transceiver can be implemented for the reception and demodulation of multi-gigabits quadrature phase shift keying (QPSK) modulated using a CMOS (complementary metal-oxide semiconductor) process. Further, an analog multi-gigabi... | 12/20/2011 |
| RE43001 | 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... | 12/06/2011 |
| 8060051 | Radio communication apparatus and frequency offset calculation method In a radio communication apparatus, a frequency offset calculator of the radio communication apparatus calculates a frequency offset of the received radio signal from the reception frequency of the radio communication apparatus. An averaging unit averages the freque... | 11/15/2011 |
| 8060050 | Method and system for analog and digital RF receiver interface In a wireless device, a method and system for a baseband receiver interface including analog and digital components are provided. An analog or a digital interface may be selected for a I/Q data signal received from a front-end receiver. The analog interface may be a... | 11/15/2011 |
| 7890081 | Direct frequency conversion demodulator and modulator-demodulator The demodulator by direct frequency conversion comprises a vector addition device having: a first circuit (1) that furnishes, starting from a first AC signal (LO), a respective AC signal to n outputs that are not all of the same amplitude and of the same freq... | 02/15/2011 |
| 7865166 | Software radio transceiver Security performance is improved by a software radio transceiver which can exchange software which is used for demodulation. A radio communication unit receives a radio signal. A conversion unit converts the radio signal received by the radio communication unit into... | 01/04/2011 |
| 7680476 | Receiving device A receiving device having an input receiving an input signal which includes a useful signal and an interference signal, a demodulator coupled to the input and generating a demodulated output signal from the input signal, which has an adjustable operating point, and ... | 03/16/2010 |
| 7529535 | Carrier recovery based demodulation A demodulator which is arranged to demodulate a first signal with the aid of a second signal, comprises a first bandpass (30) filter arranged to recover the first signal (36) from a received signal (10) and a second bandpass filter (32) a... | 05/05/2009 |
| 7436252 | Performing a coordinate rotation digital computer (CORDIC) operation for amplitude modulation (AM) demodulation In one aspect, the present invention includes a method for receiving an amplitude modulation (AM) signal in a receiver and performing a coordinate rotation digital computer (CORDIC) operation in obtaining a demodulated AM signal. The demodulated AM signal may be obt... | 10/14/2008 |
| 7433417 | Receiver with a signal path The invention relates to a receiver (1, 49, 51, 52, 54) for receiving RF signals. The known receiver comprises a phase-locked loop which is controlled by the stereo pilot. Because of unwanted frequency changes, a sampling rate converter precedes the stereo de... | 10/07/2008 |
| 7418237 | Electric circuit and transmission method for telemetric transmission The invention relates to an electric circuit for a telemetric transmission. A semiconductor transistor switch switches a quenching circuit into an electrically conductive state to prevent oscillation of a resonance circuit. The semiconductor transistor switch switch... | 08/26/2008 |
| 7373143 | Adaptive radio patch interface system The present invention is directed to an RF communications system that includes a first radio processor module having a first receiver portion programmed to convert a first analog receive signal into a first digital audio receive signal. The first analog receive sign... | 05/13/2008 |
| 7366488 | Digital carrier-recovery scheme for FM stereo detection Systems and techniques for digital processing of FM signals. Digital processing may include recovering a carrier signal at a second frequency based on a reference signal at a first frequency. ... | 04/29/2008 |
| 7336732 | Carrier frequency detection for signal acquisition A carrier frequency in a filtered received M-ary phase-shift keyed (MPSK) modulated signal having in-phase and quadrature components is detected by processing the filtered received signal to remove modulation components and thereby generate a test signal at the carr... | 02/26/2008 |
| 7336939 | Integrated tracking filters for direct conversion and low-IF single conversion broadband filters A radio frequency (RF) tuner includes a programmable tracking filter bank receiving an RF input and outputting a filtered RF signal. A mixer stage receives the filtered RF signal and outputs a first quadrature component of the filtered RF signal and a second quadrat... | 02/26/2008 |
| 7330451 | Code division multiple access communication system and method Disclosed is a CDMA communication system and method that make it possible to accommodate a greater number of user terminals that can be connected per facilities investment. Ternary phase-shift keying (TPSK) modulation is applied as primary modulation in a CDMA commu... | 02/12/2008 |
| 7302243 | Method and apparatus for detecting a radio frequency to which a broadcast receiver is tuned A method and apparatus is disclosed for detecting the frequency to which a broadcast receiver is tuned. In one embodiment, a sensing unit emits a chirp signal over a range of broadcast bands and monitors the output of the radio receiver to detect the frequency to wh... | 11/27/2007 |
| 7277690 | Communication apparatus including a mechanism for preventing demodulation of text telephone information during poor signal reception A communication apparatus includes a mechanism for preventing demodulation of text telephone information during reception of a poor quality signal. In one embodiment, the communication apparatus includes a receiver including a demodulator unit configured to receive ... | 10/02/2007 |
| 7277687 | Low power amplitude modulation detector An AM demodulator using totem pole complementary metal oxide semiconductor transistors having a feedback to provide a common gate voltage of approximately half that across the transistors in the totem pole. The AM demodulator used in a hearing assistance device and ... | 10/02/2007 |
| 7272368 | System and method for reduced deviation time domain FM/PM discriminator to achieve a reduced bandwidth frequency or phase modulation communications channels The present disclosure provides a receiver for receiving a narrow frequency deviation frequency modulated or phase modulated base band signal including a mixer for mixing the received narrow frequency deviation signal to generate an intermediate frequency signal, a ... | 09/18/2007 |
| 7263341 | Audio demodulating circuit and television broadcast receiver An audio demodulating circuit in accordance with the present invention for demodulating audio signals in a plurality of broadcast systems of mutually different frequency deviations such as the NTSC and the PAL, is arranged such that a connection between a trap circu... | 08/28/2007 |
| 7263329 | Method and apparatus for navigating, previewing and selecting broadband channels via a receiving user interface A radio receiver and method of controlling the same are provided for use in a digital digital audio radio services system. An improved user interface takes advantage of ancillary data transmitted with a digital broadcast signal to contemporaneously display song titl... | 08/28/2007 |
| 7221900 | Jamming device against RFID smart tag systems A RFID jamming device and methodology are provided for inhibiting unwanted intrusions of RFID smart tag technology. The device includes a mechanism for actively or passively preventing a RFID scanner from accurately receiving information from smart tags associated w... | 05/22/2007 |
| 7209709 | Apparatus and method for discriminating information transmitted using radio signal A transmission circuit transmits a connection request including a “signature” to a base station. The demodulator demodulates the AICH for transmitting a notification corresponding to the connection request. When requested communications are enabled, the AICH tra... | 04/24/2007 |
| 7194246 | Methods and systems for down-converting a signal using a complementary transistor structure Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing ra... | 03/20/2007 |
| 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 |
| 7155185 | Apparatus and methods for eliminating DC offset in a wireless communication device Apparatus and methods for eliminating DC offset in a wireless communication device operable on a continuous basis or on a sampled basis. In a receive channel, the output of a forward variable gain amplifier is fed back to an RC circuit to charge the capacitor (C) to... | 12/26/2006 |
| 7127221 | Receiver circuit, particularly for mobile radio In a receiver circuit for demodulating a high-frequency signal, a limiting amplifier stage with a downstream sigma-delta converter is connected in series with a mixer stage that transforms a high-frequency signal that is supplied at its input into an intermediate-fr... | 10/24/2006 |
| 7116960 | Image-rejecting antenna apparatus An image-rejecting antenna apparatus includes an antenna unit for receiving or transmitting a wireless signal and an image-reject unit for removing an image component signal having a predetermined frequency from among signals received from the antenna unit. In an im... | 10/03/2006 |
| 7106188 | Method and system for providing an activation signal based on a received RF signal A method and apparatus are described for providing an activation signal based on a received radio frequency (RTF) signal. The apparatus includes an RF receiver configured to admit a received RF signal in a given frequency band and a converter configured to convert t... | 09/12/2006 |
| 7099683 | Method for controlling the signal level from terminals to a node in a network in point to multi-point radio-communication systems having time division multiple access A received signal level is controlled in a node used in a point to multi-point (PmP) radio-communication system having microwave time division multiple access (TDMA). Local node control is activated by an AGC in the receiving node, and simultaneously, a radio contro... | 08/29/2006 |
| 7099383 | Apparatus and associated method for operating upon data signals received at a receiving station of a fixed wireless access communication system Apparatus, and an associated method, for acting upon data signals received at a base station of a fixed wireless access communication system. A plurality of modems are positioned at the base station, and a controller controls to which modem that a data signal, trans... | 08/29/2006 |
| 7054610 | Wireless terminal device In a cellular telephone provided with a receiving circuit of a direct conversion type, a passive low-pass filter is arranged between a mixer for an I-channel and a base band circuit for removing interference waves of or above a channel next to a channel neighboring ... | 05/30/2006 |
| 7049902 | Tunable high-order bessel low pass filter A tunable high-order Bessel low pass filter which is applied to a multi-rate duobinary generation system of an optical communication system. The tunable Bessel low pass filter comprises a variable inductor circuit including a plurality of variable inductors connecte... | 05/23/2006 |
| 7043223 | Super-regenerative radio frequency receiver and its data receiving method A high sensitivity of a Super-Regenerative Radio Frequency Receiver and its method is provided in the embodiment of the present invention. By using a common-mode feedback circuit and by replacing the rectifier with a feedback integral-rectifier, the rectifier, the l... | 05/09/2006 |
| 7027314 | Filtering device for converting electrical energy A device for converting electrical energy at a high operating frequency, supplied by an electrical network having a capacitor placed between a line and an earth of the device, the capacitance of the capacitor being such that the high-frequency noise is filtered and ... | 04/11/2006 |
| 7027775 | Method of automatic frequency-setting for wireless microphone-receivers The present invention relates to a method of automatically setting each of frequencies in each of a plurality of wireless microphone-receivers simultaneously used in the same area, based on the combinations of simultaneously usable frequencies. Each of microphone-re... | 04/11/2006 |
| 7027794 | Radio receiver and radio communication system The cutoff frequency is set high in order to prevent suppression of low-frequency components so that high-quality reception control of a radio signal can be realized. A radio signal amplifier unit amplifies a received radio signal and results in an amplified signal.... | 04/11/2006 |
| 7020451 | Wideband multi-protocol wireless radio transceiver system A wideband radio transceiver system that features a wideband RF section and a flexible and scalable baseband signal processing section. The transceiver system architecture has configurable baseband processing to process signals for multiple communication protocol st... | 03/28/2006 |
| 7013116 | MIMO systems having a channel decoder matched to a MIMO detector A method and apparatus for reducing the number of erred bits in the decoded signal by using a channel decoder whose transfer characteristic is matched to the transfer characteristic of the MIMO detector. This means that the curve of the transfer characteristic of th... | 03/14/2006 |
