Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7365804 | Television tuner for balance-inputting signal to balanced mixer A television tuner includes an unbalanced tuning circuit and a balanced mixer provided at the next stage of the tuning circuit. An output port of the tuning circuit is grounded through a serial circuit composed of an inductive element and a capacitive means. The out... | 04/29/2008 |
| 7286794 | Method and system for joint broadcast receiving and cellular communication at mobile terminal or device without service control Methods and systems for communicating information via a plurality of different networks are disclosed herein. Aspects of the method may comprise receiving broadcast information in a mobile terminal via a VHF/UHF broadcast communication path. Cellular information in ... | 10/23/2007 |
| 7171178 | Tuning circuit having amplitude-varying function A tuning circuit having an amplitude-varying function is disclosed that comprises a coil, a capacitor, and a resistance-adjusting element connected in parallel to the coil and the capacitor for varying resistance at time of resonance of the tuning circuit, wherein t... | 01/30/2007 |
| 7155190 | DDS-PLL method for frequency sweep A high frequency sweep generator uses a DDS-PLL method for frequency sweep over wide frequency spans. A digital sweep generator produces a linear ramp signal using DDS techniques that is applied to a coarse tuning port of a high frequency tunable oscillator, such as... | 12/26/2006 |
| 7099642 | Method and apparatus for matching receiver carrier frequency A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to downconvert a received signal. An analog frequency reference having a... | 08/29/2006 |
| 7076221 | Digital automatic fine tuning method and apparatus Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fin... | 07/11/2006 |
| 7076224 | Process for controlling the gain of a frequency tuner, and corresponding tuner, in particular for the reception of terrestrial digital television signals A method and device are disclosed for receiving digital television signals by a frequency tuner. The power of the signal is measured after an analog/digital conversion in the frequency tuner, and the gain thereof is controlled on the basis of this power measurement ... | 07/11/2006 |
| 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 |
| 6944878 | Method and apparatus for selecting a satellite signal A method and apparatus for ensuring a correct satellite signal connection. Specifically, a user selects a satellite signal via an integrated receiver/decoder (IRD) from at least one satellite, and the IRD sends a command signal to a selector switch to acquire and lo... | 09/13/2005 |
| 6925291 | Electronic alignment system for a television signal tuner An electronic alignment system for a television signal tuner utilizes first and second controllers for generating respective first and second control signals for respective first and second signal processing circuits of a signal processing arrangement, with the firs... | 08/02/2005 |
| 6917390 | Intermediate-frequency coupled-circuit for television tuner An intermediate-frequency (IF) coupled-circuit for a television tuner is provided, which is connected between an IF amplifying stage and a video-signal-selection filter, and which comprises a parallel circuit having a second capacitor connected in parallel to a seri... | 07/12/2005 |
| 6888580 | Integrated single and dual television tuner having improved fine tuning Improved television tuning circuits are disclosed. An example tuning circuit includes a fraction-N frequency synthesizer facilitating fine tuning. This tuning circuit may be formed using relatively few independent oscillators. The tuning circuit lends itself to the ... | 05/03/2005 |
| 6879815 | Apparatus for extracting a carrier frequency A frequency extractor extracts an input frequency of an input signal. The frequency extractor includes a frequency multiplier, first and second filters, a binary circuit and a frequency divider. The frequency multiplier obtains a signal of a multiplied frequency, th... | 04/12/2005 |
| 6862437 | Dual band tuning A dual band RF tuning circuit (1) has a first impedance element (4) and a second impedance element (5) between an RF input port (2) and an RF output port (3), tuning being provided by the impedance elements (4, 5) to a first... | 03/01/2005 |
| 6831705 | Television tuner and television receiver The television tuner 15a has a reference frequency for each channel number of television radio wave, and can be tuned to a television radio wave of a channel number on the basis of a reference frequency of the channel number, when setting the channel n... | 12/14/2004 |
| 6750734 | Methods and apparatus for tuning an LC filter A receiver, such as a television receiver, tunes an inductive (“L”) and capacitive (“C”) filter based on a desired frequency. The LC filter includes a plurality of inductors, configured in at least one inductive (“L”) bank, and a plurality of capacitors ... | 06/15/2004 |
| 6700629 | Video intermediate frequency processing apparatus When adjusting a free-running frequency of a voltage controlled oscillator, the video intermediate frequency processing apparatus receives a VIF-DEFEAT signal to a VIF-AMP to minimize gain of the VIF-AMP, and thereby, the VCO is placed into a free-running... | 03/02/2004 |
| 6697128 | Video frequency response For optimum videotex data coding, for error-free functioning of so-called descramblers and--not least--for the impression of improved detail resolution on the screen of a television set of displayed pictures, it is known to process the video frequency res... | 02/24/2004 |
| 6668160 | Method and system for monitoring a radio transmission link A radio transmission link between at least one radio transmission device is monitored and at least one radio reception device. Radio transmission links between at least one transmission antenna and one reception antenna are monitored for faults. At least ... | 12/23/2003 |
| 6625431 | Tuner device A phase-locked loop (PLL) tuning controller monitors a voltage value of an automatic frequency control (AFC) signal, and detects a first frequency at which a first threshold voltage value accords with the AFC voltage value while varying an oscillation fre... | 09/23/2003 |
| 6400935 | Pilot tone detector An apparatus and method for detecting the presence of a signal component in an arbitrary signal, where the signal component has a desired frequency. The apparatus includes an error signal generator and a detector. The error signal generator has an input f... | 06/04/2002 |
| 6131023 | Cable modem tuner with an up-stream and a reception circuit in the same casing A cable modem tuner includes, in the same casing, an up-stream circuit to transmit an up-stream data signal to a CATV station, and a reception circuit for receiving a down-stream signal via a HPF that removes the up-stream data signal. The reception circu... | 10/10/2000 |
| 6130922 | Demodulating digital video broadcast signals Apparatus for demodulating digital video broadcast signals with an improved mechanism for automatic frequency control including data modulated on a multiplicity of spaced carrier frequencies. The apparatus includes an analog to digital converter for provi... | 10/10/2000 |
| 6084886 | Method and apparatus for facilitating establishment of communications in a messaging system A digital sync signal (502) is transmitted (702) from K transmitters (206) of a cluster (402), followed by K fine tuning signals (506) during K time slots (510), each time slot assigned to a transmitter. Each fine tuning signal comprises a pair of tones (... | 07/04/2000 |
| 6064867 | Receiving apparatus with automatic frequency controlling A receiving apparatus is disclosed which comprises: a receiving circuit for receiving time-division-duplexed first and second radio wave paging signals, having the same carrier frequency, including first and second data having different first and second d... | 05/16/2000 |
| 6049708 | Mobile communication apparatus for intermittently receiving a broadcasting signal at a corrected reception timing In an apparatus for intermittently receiving a broadcasting signal at a reception timing which appears by a predetermined intermittent reception cycle and is determined by using a clock generator (5) for generating a clock signal of a clock frequency liab... | 04/11/2000 |
| 5933200 | Method for reducing carrier recovery time in high definition television receiver An HDTV receiver with a reduced carrier recovery time in a communication system transmitting a carrier via a pilot signal is disclosed. The HDTV receiver includes a double conversion tuner and a carrier recovery circuit for recovering a carrier. The carri... | 08/03/1999 |
| 5809088 | Digital carrier wave restoring device and method for use in a television signal receiver A digital carrier wave restoring device for use in a telecommunication receiving system which utilizes a pilot signal: frequency-converts an output signal of a filter to a digital signal processing frequency band; phase-splits the digital signal to output... | 09/15/1998 |
| 5524289 | Method and circuit for an automatic, high precision frequency fine tuning For the purpose of a high precision frequency fine tuning, for example, to a certain television channel, an analog circuit, the frequency of which can be balanced, for example, an demodulator, is balanced in an integrated circuit with the help of a contro... | 06/04/1996 |
| 5524288 | Tuning of a radio receiver The present invention relates to a method of tuning a radio receiver to a desired frequency. The frequency of each tuning circuit in the radio receiver is controlled by controlling the capacitance diodes of the tuning circuits. The control is accomplished... | 06/04/1996 |
| 5521651 | Automatic fine tuning detection circuit A system for carrying out automatic fine tuning detection comprising a generating section for generating a video intermediate frequency signal from a radio wave, a filtering section connected to the generating section for filtering the video intermediate ... | 05/28/1996 |
| 5444498 | Apparatus and method for extending pulling range of automatic fine tuning of television receiver An apparatus and a method for extending a pulling range of automatic fine tuning of a television receiver. An initial tuning voltage is applied to a tuner when a channel switching operation is performed or the television receiver is powered on. The tuning... | 08/22/1995 |
| 5303403 | Electronic switch for selecting satellite polarization signals An electronic switch used in a low-noise block down converter for receiving satellite horizontal or vertical polarization signals. The electronic switch only needs one single wire to receive a pulse width signal of a TV receiver. The electronic switch out... | 04/12/1994 |
| 5303398 | Stability detection method and apparatus for a tuning system An indication of stability of a tuning system after changing, the local oscillator frequency to a predetermined frequency, such as a frequency corresponding to a new channel during a channel changing operation or to a new search frequency during a search,... | 04/12/1994 |
| 5301366 | High performance frequency tuning with low cost synthesizer A communication system and a method for using an approximating frequency synthesizer with frequency correction by digital signal processing (DSP) means to provide a radio transmitter or receiver with rapid high resolution tuning capabilities. A user selec... | 04/05/1994 |
| 5280639 | Double super-heterodyne tuner A double super-heterodyne tuner provided with an up-converting section and a down-converting section, and including an input filter constituted by single tuning to be supplied with an input signal, an RF amplifier for amplifying the signal passing through... | 01/18/1994 |
| 5280641 | Signal-strength-peak detecting circuit for automatic tuning circuit In a signal-strength-peak detecting circuit, tuning frequencies by a tuning circuit are periodically varied. Wide band seek is performed according to a signal level of the varied frequencies. When the signal level is greater than a predetermined value, a ... | 01/18/1994 |
| 5179727 | Automatic adjusting circuit for an analog filter The center frequency of each of the analog filters with different selectivities each other installed in an automatic adjusting circuit is automatically adjusted in accordance with a bias input signal which is generated by the phases detectors respectively... | 01/12/1993 |
| 5025251 | Self-tuning direct coupled data limiter of a battery saver type paging receiver A battery saver type paging receiver includes an improved peak and valley amplitude detection type data limiter section with mode control operation thereof, digital word storage of acquired peak and valley amplitude values, and self tuning capabilities. M... | 06/18/1991 |
| 4977613 | Fine tuning frequency synthesizer with feedback loop for frequency control systems An additional mixer is included in the feedback loop of a PLL which can be one of the local oscillators of a dual conversion system. A fine tuning frequency synthesizer is coupled to an input of the additional mixer for providing fine frequency control of... | 12/11/1990 |
