Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7961820 | Programmable and pausable clock generation unit In an example embodiment, a clock generation circuit comprises two programmable ring oscillators arranged and configured to operate in a mutually exclusive manner, and a variable programmable delay element (not shown). An input programming pattern is provided as an ... | 06/14/2011 |
| 7430247 | Carrier frequency detection for N-ary phase modulated signal Carrier frequency detection for an N-ary modulated signal is achieved by digitizing the N-ary modulated signal, frequency shifting the digitized N-ary modulated signal to prevent aliasing, raising the frequency-shifted signal to the Nth power, transformin... | 09/30/2008 |
| 7424069 | Reference timing signal apparatus and method A reference timing signal apparatus with a phase-locked loop has a computer algorithm which adaptively models the multiple frequencies of an oscillator following a training period. The oscillation frequency of the oscillator is controlled in response to a phase dete... | 09/09/2008 |
| 7421043 | Method and/or apparatus for stabilizing the frequency of digitally synthesized waveforms An apparatus comprising a first circuit, a second circuit, a third circuit and a fourth circuit. The first circuit may be configured to generate a demodulated signal in response to (i) a modulated signal and (ii) a seed value. The second circuit may be configured to... | 09/02/2008 |
| 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 |
| 7311828 | Wall mount for water treatment system A wall mount for attaching water treatment system to a wall plate consists of a platform and a vertical portion. The water treatment system rests on the platform. The water treatment systems extend through the back of the wall mount and extend through passages in th... | 12/25/2007 |
| 7310112 | Information recording device and communication method thereof, electronic camera, and communication system An information recording device in which low-noise and clear image or audio information can be recorded by stopping the generation of a carrier in an oscillation section of wireless communication device during an imaging or sound recording process. The information r... | 12/18/2007 |
| 7283087 | Radar having a transmission oscillator which can be excited quasi-phase coherently by an evaluation oscillator A radar is provided with transmitting means for transmitting a signal and with receiving means for receiving a reflection of the transmitted signal. The inventive radar is characterized in that the transmitting means is provided with a transmitting oscillator and th... | 10/16/2007 |
| 7145963 | Method and apparatus for multiple phase splitting for dual band IQ subharmonic mixer drive chains A method and apparatus are provided for generating first and second modulation signals from a local oscillator signal for quadrature subharmonic modulation of a quadrature amplitude modulated information signal. The method includes the steps of delaying the local os... | 12/05/2006 |
| 7096599 | Household appliance A household appliance (1) e.g a washer-dryer, comprises an enclosure (2) into which objects to be heated are placed, a magnetron (4) for generating microwaves, a waveguide (3) for feeding the generated microwave into the enclosure, an arc... | 08/29/2006 |
| 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 |
| 6658066 | Method and apparatus for multiple phase splitting for dual band IQ subharmonic mixer A method and apparatus are provided for generating first and second modulation signals from a local oscillator signal for quadrature subharmonic modulation of a quadrature amplitude modulated information signal. The method includes the steps of delaying t... | 12/02/2003 |
| 6510185 | Single chip CMOS transmitter/receiver A single chip RF communication system and method is provided including a transmitter and a receiver. The RF communication system in accordance with the present invention includes an antenna for receiving transmitting RF signals, a PLL for generating multi... | 01/21/2003 |
| 6359944 | Tuning system for achieving quick acquisition times for a digital satellite receiver The RF signals received from the LNB and the corresponding IF signal produced by the tuner may be offset in frequency due to reasons other than a frequency drift of the oscillator of the LNB, such as satellite transponder frequency adjustments made by the... | 03/19/2002 |
| 6310924 | Digital demodulator A digital demodulator which is capable of simplifying an application specific integrated circuit (ASIC) of a demodulator using a combined sampling technique. The digital demodulator includes a mixer for multiplying an IF signal from the IF output unit and... | 10/30/2001 |
| 6282232 | Methods and apparatus for burst-mode CDMA DSSS communications receiving systems A method and apparatus for receiving and processing burst-mode code-division multiple access (CDMA) direct-sequence spread-spectrum (DSSS) signals is provided. In this apparatus and method, a number of demodulators are provided in a set enumerated order. ... | 08/28/2001 |
| 6018551 | Method and apparatus for reproducing carrier A complex multiplier 5 complex-multiplies base band signals x and y obtained from a receive signal by local oscillation signals c and s, to output complex detection signals p and q. A phase difference detecting portion 7 outputs the amount of the detected... | 01/25/2000 |
| 5844943 | Method and converter for converting rectangular signals to phase signals A rectangular to phase converter (201) includes a first converter circuit (201B) which limits signals to a predetermined level. A phase selector (259) selects a relative phase from the limited signals. According to one aspect of the invention, input recta... | 12/01/1998 |
| 5719747 | Interface unit for communication device with parts positioned on a printed-wiring board for achieving desirable operating characteristics An interface unit having a digital hierarchy interface function for a communication device has parts disposed on a printed-wiring board in a Layout to maintain desired interface unit characteristics. The interface unit includes a plurality of parallel B/U... | 02/17/1998 |
| 5604724 | Maximum likelihood estimation using reference and spontaneous output peaks of partial response equalizer In a signal processor for processing a multilevel signal, a partial response equalizer is provided having a first predetermined number of reference amplitudes. The equalizer receives the multilevel signal and detects a significant instant of amplitude tra... | 02/18/1997 |
| 5579338 | Spread spectrum receiver using partial correlations A complex baseband signal as long as one period of PN signal is divided into three sequences. The three partial signals are input to three correlators which then calculate the correlations between the three partial signals and three partial PN signals. Th... | 11/26/1996 |
| 5388125 | Frequency converter circuit with improved intermediate frequency stability A frequency converter circuit which includes a first frequency conversion unit which mixes a received signal and a first local oscillation signal to produce a first intermediate frequency signal and a second frequency conversion unit which mixes the first... | 02/07/1995 |
| 5321725 | Method and apparatus for communicating digital information such as compressed video using treillis coded QAM A method and apparatus for communicating high definition television signals is provided. Video signals are divided into blocks of PCM data. The PCM data is processed using motion estimation and compensation to provide DPCM data. For each block, one of PCM... | 06/14/1994 |
| 4807254 | Carrier wave recovery system A carrier wave recovery system for a slotted ALOHA system is disclosed. In a time slot where a burst is not inputted, the frequency of oscillator means is locked to a mean value of carrier wave frequencies of bursts which were received in the past, thereb... | 02/21/1989 |
| 4622553 | Radar detector A radar detector is disclosed which comprises a radar wave signal receiver for producing a detection output when the incident radar signal is synchronized with a local oscillation frequency at a certain sweeping time, first and second pulse train signal g... | 11/11/1986 |
| 4455663 | Full duplex modems and synchronizing methods and apparatus therefor Full duplex modems and synchronizing methods and apparatus therefor which allow the relatively low cost realization of full duplex modems compatible with prior art data sets such as the Bell System 212A Data Set. The modems utilize relatively little bandp... | 06/19/1984 |
| 4440987 | Computer and peripheral interface circuit An interface circuit is disclosed for connecting a digital computer to a modem or other peripheral circuit through either a standard digital signal (RS232) "port" or an audio-frequency "port" normally used by the computer to store and retrieve information... | 04/03/1984 |
| 4392233 | Method of filtering electromagnetic waves and dual channel audio code filter therefor An original electromagnetic continuous wave which is broken up into discrete lengths to form intelligence such as Morse Code, is filtered to eliminate noise, static and other electrical interference to render a weak code signal audible even in the worst r... | 07/05/1983 |
| 4013965 | Circuit for preventing errors in decoding information from distorted pulses A converter for converting radio teleprinter audio frequency signals from a radio receiver into teleprinter signals which are bipolar pulses for operating an output device. The converter includes a binary pulse decoder, which may be used independently in ... | 03/22/1977 |
