Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8095098 | Apparatus and methods for network interface and spectrum management Apparatus and methods for the management of radio frequency spectrum within a network such as a CATV network. In one aspect of the invention, an improved signal reflector apparatus adapted for use in the network is disclosed, the reflector circuit being designed to ... | 01/10/2012 |
| 7720451 | Methods and apparatus for calibrating oscillators in a receiver A receiver includes a first oscillator supplying a reference frequency signal; a reference signal generator producing a first frequency conversion signal and a local calibration signal from the reference frequency signal; a first frequency converter responsive to th... | 05/18/2010 |
| 7376446 | Mobile communications network with expanded carrier capacity and method of expanding base station carrier capacity A base station for a mobile communications system, a mobile communications system including the base station and a method of increasing base station capacity. Each base station antenna is coupled to a transmission line that may be connected to a triplexer. The tripl... | 05/20/2008 |
| 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 |
| 7310505 | Attenuation control for tuners A tuner includes an RF input with a signal level controller such as an attenuator that is provided to attenuate a signal from the RF input. A tunable RF filter provides RF band limiting and determines simultaneously the AGC bandwidth. An amplifier with resistive fee... | 12/18/2007 |
| 7295822 | Radio wave receiver, radio-controlled timepiece and tuning capacitance setting method A radio wave receiver for receiving radio waves having a predetermined frequency, the receiver comprises an antenna, an variable capacitor connected to the antenna, a memory, and a controller which determines an optimum capacitance of the variable capacitor with whi... | 11/13/2007 |
| 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 |
| 7292830 | Receiver gain management Noise floor searching is performed for a cellular base station to increase accuracy of receiver gain estimates. This allows adjustment of gain in a radio module to account for gain in front-end devices, and achieve a desired overall receiver target gain. The gain of... | 11/06/2007 |
| 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 |
| 7286804 | Receiver digital-analog converter and tuning circuit An object of the present invention is to provide a receiver, a digital-analog converter and a tuning circuit in which temperature compensating components can be formed on a semiconductor substrate while reducing component costs. An FM receiver 100 is constitu... | 10/23/2007 |
| 7236755 | Broadcast wave receiving apparatus Herein disclosed is a broadcast wave receiving apparatus, comprising: first and second tuning circuits each having a resonance frequency; first controlling means for controlling one of the first and second tuning circuits to ensure that the resonance frequency of on... | 06/26/2007 |
| 7236212 | System and method for providing a low power receiver design An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 06/26/2007 |
| 7199664 | Integrated switchless programmable attenuator and low noise amplifier An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 04/03/2007 |
| 7190753 | Method and apparatus for temporally correcting a data signal A data signal is detected and compared with a reference value. A displacement time is determined as a function of the difference between the reference value and the signal level of the data signal. The data signal is buffer-stored and output in a manner that is temp... | 03/13/2007 |
| 7171181 | Method for achieving immediate and accurate automatic frequency tuning An automatic frequency tuning (AFT) system which can effect immediate and accurate automatic frequency tuning of the local oscillator (LO) of a receiver, in order to achieve a stable intermediate frequency (IF) signal while reducing the power consumption and the cos... | 01/30/2007 |
| 7167685 | Frequency division The invention relates to a method of operating a frequency divider. The frequency divider includes a plurality of divider cells arranged in a chain. Each divider cell is adapted to divide a frequency of an input signal with one of two enabled division ratios in acco... | 01/23/2007 |
| 7158449 | Electronic timepiece and electronic apparatus An electronic timepiece includes a radio wave receiving antenna (8) for receiving radio waves, electromagnetic motors (61, 65) for driving a time display part, a battery (5), and a body case for receiving the antenna (8), electromagnetic ... | 01/02/2007 |
| 7155186 | AM receiver with controllable RF input circuit AM receiver comprising an RF input circuit for receiving an RF AM signal, demodulation means providing an audio signal carried by said RF AM signal as well as automatic gain control means for stabilising an RF carrier dependent DC level at the output of said demodul... | 12/26/2006 |
| 7151909 | Broadcasting information receiving apparatus and broadcasting information receiving method A broadcast information receiving apparatus, comprising: a broadcast service receiving section for receiving a plurality of broadcast services from a broadcast information source; and an information transmission section for transmitting information, wherein the broa... | 12/19/2006 |
| 7127010 | Oscillator controlling A receiver local oscillator is always tuned to a frequency that lies within a range of reception frequencies of the receiver. The oscillator is tuned to a frequency less than and above the received frequency when the received frequency is above and below a threshold... | 10/24/2006 |
| 7120407 | Receiver and its tracking adjusting method A receiver such that the period required for tracking adjustment, temperature compensation is not needed, and tracking errors due to fluctuation of the power supply voltage are prevented from increasing, and a tracking adjusting method for the receiver. A DAC 4 | 10/10/2006 |
| 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 |
| 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 |
| 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 |
| 7109781 | Temperature compensation for internal inductor resistance A compensation circuit compensates for the variation in the internal resistance of a multi-track inductor over temperature. The compensation circuit includes a dummy inductor that has the same temperature dependent resistance as that of the multi-track inductor that... | 09/19/2006 |
| 7092043 | Fully integrated tuner architecture An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 08/15/2006 |
| 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 |
| 7068329 | Method and system for providing a video signal In accordance with the specific embodiment of the present invention, a tuner alternates between receiving a first video signal and a second video signal, such that every other frame of a specific signal is received. This is accomplished by writing to an IF1 a... | 06/27/2006 |
| 7062240 | Automatic frequency control processing in multi-channel receivers A multiple channel receiver (200) includes a communications receiver synthesizer (204) and at least one numerically controlled oscillator (NCO) (406) that produce local oscillator signals that are derived from a common reference oscillator (2... | 06/13/2006 |
| 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 |
| 7035351 | Automatic gain control loop apparatus A DC offset cancelling circuit with multiple feedback loops suppresses DC offset voltages within an automatic gain control loop apparatus. The apparatus includes a plurality of gain stages connected in series that receive and amplify an input RF signal. Each gain st... | 04/25/2006 |
| 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 |
| 7027787 | Automatic frequency control system, operation control method thereof and mobile communication device using the same In a mobile communication device, communication can be resumed upon next communication without causing problem even when an AFC control signal becomes abnormal upon interruption of communication. Locked state and unlocked state of an AFC portion is monitored by an A... | 04/11/2006 |
| 7023948 | Frequency converter arrangement A frequency arrangement with at least two successive heterodyne stages, one of which converts an input signal with an adjustable first frequency of a superposition oscillator that can be set in fine frequency increments into a first intermediate frequency, a second ... | 04/04/2006 |
| 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 |
| 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 |
| 6980775 | Automatic frequency control (AFC) system and method using an adaptive threshold to improve accuracy of the direct current (DC) component calculation for a received signal A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver du... | 12/27/2005 |
| 6967693 | Television signal transmitter including a bandpass filter without tracking error A television signal transmitter includes a mixer in which an intermediate-frequency television signal is frequency-converted into a television signal on a channel used for transmission in a predetermined frequency range, a bandpass filter to which the television sig... | 11/22/2005 |
