Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8126415 | Method and system for clock synchronization in a global navigation satellite system (GNSS) receiver Aspects of a method and system for clock synchronization in a GNSS receiver are provided. In this regard, generation of a clock signal in a GNSS receiver may be disabled during a first time interval and enabled during a second time interval, wherein a counter utiliz... | 02/28/2012 |
| 7764938 | Signaling generation through multiplexing The proposed apparatus and is used for signal generation by multiplexing signals such that there appears no glitches in an output signal. The present apparatus utilizes the knowledge of phase difference between input oscillator signals being multiplexed in order to ... | 07/27/2010 |
| 7529531 | Apparatus and methods for estimating a sleep clock frequency Apparatus and methods for estimating the frequency of a sleep or slow clock using a fast clock, such as a temperature compensated crystal oscillator. The disclosed apparatus include an estimator having a first counter that receives sleep clock synchronized pulses is... | 05/05/2009 |
| 7466968 | Method and apparatus for providing a local oscillator signal A multi-band RF transceiver (100) includes a single dual band VCO (102) that is used in both transmit and receive modes of operation. The VCO's low band frequency output signal that is provided on output line (120) is multiplied by two by multip... | 12/16/2008 |
| 7457601 | Precisely timed execution of a measurement or control action and synchronization of several such actions The invention relates to a method for a particularly precise execution of a measurement or control action and to a corresponding controller (9). A temporally periodic synchronization signal (S, S′) generated by a receiver (9) based on a timing refere... | 11/25/2008 |
| 7389094 | Wireless data communications using FIFO for synchronization memory A microprocessor system architecture is disclosed which allows for the selective execution of programmed ROM microcode or, alternatively, RAM microcode if there has been a correction or update made to the ROM microcode originally programmed into the system. Patched ... | 06/17/2008 |
| 7373127 | Digital beam forming for communications systems An antenna-receiver communications system and method is provided to mechanize multibeam mobile antenna-receive subsystems. Digital beam forming for modern wideband mobile communications systems is provided. In an aspect, subsystems can simultaneously receive, acquir... | 05/13/2008 |
| 7359711 | Methods and apparatus for improving accuracy of radio timing measurements A system, method, apparatus, means, and computer program code for improving accuracy of radio timing measurements. According to some embodiments, a wireless terminal or other wireless device can make adjustments to a measurement made from a radio transmission source... | 04/15/2008 |
| 7356312 | Fractional frequency synthesizer A frequency synthesizer circuit generates an output clock signal having a desired frequency relationship with an input reference signal, and offers essentially arbitrary relational values and adjustment resolution within any applicable circuit limits. The frequency ... | 04/08/2008 |
| 7327993 | Low leakage local oscillator system Local oscillator apparatus comprising communication signal terminals for a communication signal, especially in a receiver or a transmitter, and a controlled frequency oscillator for producing a local oscillator signal. The local oscillator also includes a reference ... | 02/05/2008 |
| 7317905 | Radio-controlled clock and method for gaining time information Time signals for controlling a radio clock are transmitted by a transmitter and received by a receiver as amplitude modulated time signals, formed of a multitude of time frames. Each time frame has a constant duration. These time signals are first automatically ampl... | 01/08/2008 |
| 7315355 | Method and device for optical distance measurement A method and a device for optically measuring a distance by emitting an amplitude modulated and bundled optical signal and by receiving the signal reflected from a target object. The modulation frequency is continuously regulated by means of a regulating loop in suc... | 01/01/2008 |
| 7313369 | Communication semiconductor integrated circuit and radio communication system A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit forming part of a reception PLL circuit and an oscillator circuit for ... | 12/25/2007 |
| 7313380 | Variable resolution A/D converter A variable resolution analog-to-digital converter includes a sample-and-hold circuit including a plurality of sample-and-hold units which are connected in parallel and selectively activated corresponding to a required resolution to sample and hold an analog input si... | 12/25/2007 |
| 7302236 | Radio communication method and system for performing communication among a plurality of radio communication terminals A reference local oscillation signal transmission station 1 radiates a reference local oscillation signal to a service zone. A portion of the signal received by each radio slave station terminal 2 is branched and fed to an injection locked oscillator | 11/27/2007 |
| 7295824 | Frequency multiplier pre-stage for fractional-N phase-locked loops A WLAN (Wireless Local Area Network) communication device comprising a WLAN frequency synthesizer for generating a synthesizer signal suitable for modulating a transmission signal and/or demodulating a reception signal and corresponding methods and integrated circui... | 11/13/2007 |
| 7283801 | Circuit arrangement for phase locked loop, and phase locked loop based method to be used in cellular network terminals The invention relates to a circuit arrangement (4) for a PLL to be used in a terminal (50) of a time division cellular network. In a PLL according to the invention, the control voltage (32a) to a VCO (33) in the PLL is kept at a de... | 10/16/2007 |
| 7280522 | Method for preparing a profile in W-CDMA communication The method of this invention for preparing a profile in W-CDMA which, using a timer value and norm value, helps a mobile unit to synchronize its signals with those of a base station, comprising providing a profile data preparing portion which cumulatively adds a new... | 10/09/2007 |
| 7272374 | Dynamic selection of local oscillator signal injection for image rejection in integrated receivers A system and method are disclosed for dynamically selecting high-side injection or low-side injection of local oscillator mixing signals based upon an assessment of signal power within the input signal spectrum that could cause unwanted images in the processed signa... | 09/18/2007 |
| 7271634 | Delay-locked loop having a plurality of lock modes A delay-locked loop (DLL) has a counter that is incremented or decremented by the loop in the process of achieving lock. The counter value is converted using an digital to analog converter (DAC) to an analog voltage that controls the delay through the delay line. Du... | 09/18/2007 |
| 7272373 | Ratiometric clock systems for integrated receivers and associated methods A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circu... | 09/18/2007 |
| 7266093 | Method and arrangement for automatic frequency correction A method and arrangement for automatic frequency correction in UTRA TDD mode, having a first stage (500) for frequency lock in idle mode, and a second stage (600) for receiving a channel estimate from beacon function (mx1), receiving a chann... | 09/04/2007 |
| 7251467 | Telecommunications using a tunable oscillator Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency err... | 07/31/2007 |
| 7239857 | Method and apparatus for compensating an oscillator in a location-enabled wireless device A method and apparatus for compensating an oscillator in a location-enabled wireless device is described. In an example, a mobile device includes a wireless receiver for receiving wireless signals and a GPS receiver for receiving GPS signals. The mobile device also ... | 07/03/2007 |
| 7236808 | Vertical dynamic beam-forming A wireless communication system for transmitting and receiving wireless communications using at least one beam is disclosed. The system comprises a plurality of WTRUs, at least one beam-forming antenna, and at least one radio network controller (RNC). The antenna is... | 06/26/2007 |
| 7224950 | Estimating GPS reference frequency drift from PDC-handset VCO-bursts A combination mobile phone and navigation satellite receiver comprises a circuit for correcting GPS receiver reference frequency drift by using VCO burst information periodically received by a PDC handset. A corrected GPS receiver reference frequency drift then enab... | 05/29/2007 |
| 7221916 | Signal enhancement device for phase lock loop oscillator A reference signal enhancement device for phase lock loop oscillator. In the reference signal enhancement device, a band pass filtering unit is coupled to a reference signal to filter high frequency noise, low frequency noise, and harmonic components of the referenc... | 05/22/2007 |
| 7218359 | Digital television receiver and method of recovering incoming digital television signal A digital television receiver includes a tuner for down-converting an incoming signal to produce a down-converted signal according to a local oscillator signal corresponding to a selected channel. A filter is coupled to the tuner for filtering the down-converted sig... | 05/15/2007 |
| 7203457 | Tuning system for achieving rapid signal acquisition for a digital satellite receiver A method and apparatus for compensating for frequency drift in an LNB by storing the frequency offset of each LNB with respect to each channel. When a channel is selected, a particular LNB is activated and the table of offset values is consulted. The offset value fo... | 04/10/2007 |
| 7194279 | Adjustment of a phase difference between two signals A method for adjusting a phase difference between a received code modulated signal and a replica code sequence where, in order to enlarge the control range, it comprises a step of determining measurement values representing a phase difference between a received code... | 03/20/2007 |
| 7190939 | Time division IQ channel direct conversion receiver and method therefor A direct conversion receiver includes a local oscillator for generating a sinusoid, a mixer for receiving an incoming signal and for mixing the incoming signal with the sinusoid, an analog-to-digital converter for converting the mixed analog signal into a digital si... | 03/13/2007 |
| 7190940 | Method and system for frequency offset estimation A method and system for estimating a frequency offset between a receiver and a transmitter, including the steps of, or means for: (a) receiving a first signal from said transmitter and demodulating the first signal; (b) performing a frequency shift on said first sig... | 03/13/2007 |
| 7190943 | System and method for frequency translation with harmonic suppression using mixer stages A circuit for frequency translating a radio frequency signal comprises a plurality of mixer stages, each stage associated with a particular range of frequencies of a radio frequency signal. The circuit further comprises a switching circuit that communicates the radi... | 03/13/2007 |
| 7187419 | Television tuner in which local oscillation signal is prevented from going out of lock in video detection A television tuner includes a surface acoustic wave filter that receives input of an intermediate-frequency signal; an integrated circuit for detecting the intermediate-frequency signal, the integrated circuit including a video detector and a voltage-controlled osci... | 03/06/2007 |
| 7177612 | Frequency generator and communication system using the same A frequency generator which can perform stable frequency oscillation unaffected by temperature variation. A frequency generator having a differential amplifier (1) having an LC resonance circuit (10) as a load and buffer circuits (21, 22)... | 02/13/2007 |
| 7177601 | Method and apparatus for transceiving data using a bimodal power data link transceiver device A bimodal power data link transceiver device (33) is provided. The device comprises a transceiver integrated circuit (IC) (14); wherein the IC comprises an oscillator (150), a frequency reference port, and a RF output port. A VCO (12) is ... | 02/13/2007 |
| 7167727 | Wireless data communications using FIFO for synchronization memory A wireless (radio) receiver receives RF signals carrying data synchronized with a first clock. The wireless receiver demodulates the RF signals to extract the data signals and the first clock signals. The wireless receiver uses the first clock signals as write signa... | 01/23/2007 |
| 7164900 | Impulse waveform generating apparatus An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching circuit for shifting a phase of the reference signal by 90 degrees, a freque... | 01/16/2007 |
| 7154341 | Communication semiconductor integrated circuit device and wireless communication system A communication semiconductor integrated circuit device includes an RFVCO and a TXVCO and is formed over one semiconductor substrate, and has a first operation mode (idle mode) which does not perform transmission and reception, a second operation mode (warmup mode) ... | 12/26/2006 |
| 7155191 | Method and arrangement for reducing phase jumps when switching between synchronization sources A method and an arrangment for reducing phase jumps in a frame synchronization signal when switching between synchronization signal when switching between synchronization reference sources are disclosed. A new reference signal to which each of the two reference sour... | 12/26/2006 |
