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| Number | Title | Issue Date |
| 7817976 | System and method for inverting automatic frequency control A method includes a foreground process and a background process. In the foreground process, an input signal is processed using a first reference signal to generate an output. A first frequency control signal is generated from the output. A frequency of the first ref... | 10/19/2010 |
| 7587184 | Controlling fine frequency changes in an oscillator In one embodiment, the present invention includes a method for determining if a frequency control instruction would cause a first capacitor bank to reach a limit and adjusting the first capacitor bank in a first direction using a calibration value and adjusting a se... | 09/08/2009 |
| 7471937 | System and method for inverting automatic frequency control (AFC) A system and method for inverting automatic frequency control applied to a reference signal used to process an input signal is disclosed. When receiving an input communication signal, a receiver controls the frequency of the reference signal to compensate for freque... | 12/30/2008 |
| 7360100 | Intelligent power management control system and method Certain embodiments of the present invention relate to a dynamic power management system. The system includes a power input providing power to an imaging system, measurement unit(s) for measuring current and/or voltage in the imaging system, and a power management c... | 04/15/2008 |
| 7340231 | Method of programming a communication device and a programmable communication device In the method according to the invention the communication device has a microphone and a signal path leading from the microphone to a speaker, where the signal path comprises a programmable signal processing unit. According to the method the user is given control in... | 03/04/2008 |
| 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 |
| 7171176 | Tuner system self adaptive to signal environment A circuit and method for adjusting the operating characteristics of a tuner in accordance with information derived from the signals being processed by the tuner. Depending upon signal type and/or signal strength, the power levels of certain components are adjusted a... | 01/30/2007 |
| 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 |
| 7013124 | Wide band tuner When changeover switch (26) selects the output of L band filter (23), changeover switch (28) is turned off and mixer (29) is operated as an amplifier such that the oscillation frequency of local oscillator (31) is controlled based ... | 03/14/2006 |
| 6952570 | Wireless communication receiver that determines frequency offset A frequency offset correction value estimation section (21) receives a signal including a predetermined fixed pattern from a transmission side, thereafter, selects a combination of fixed patterns used in a process of estimating a frequency offset is selected ... | 10/04/2005 |
| 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 |
| 6751445 | Receiver tuning system In a receiver, a frequency-synthesis circuit (SYNTH) generates a stepped-frequency signal (Ssf) having a frequency which can be varied in steps. A synchronization circuit (LOOP) synchronizes a tuning oscillator (LO) with the stepped-frequency signal (Ssf). It provid... | 06/15/2004 |
| 6748092 | Hearing aid with improved percentile estimator The invention relates to a hearing aid, preferably a programmable hearing aid, having at least one microphone (1), at least one signal processor with at least one channel, an output amplifier (9) and an output transducer (10), at least one of th... | 06/08/2004 |
| 6665523 | Receiver tuning system In a receiver, a frequency-synthesis circuit (SYNTH) generates a stepped-frequency signal (Ssf) having a frequency which can be varied in steps. A synchronization circuit (LOOP) synchronizes a tuning oscillator (LO) with the stepped-frequency signal (Ssf)... | 12/16/2003 |
| 6181923 | Automatic frequency control circuit and method of automatic frequency control The present invention relates to the automatic frequency control circuit and the method of automatic frequency control. The automatic frequency control circuit for processing frequency control of a received signal frequency based on an incoming received s... | 01/30/2001 |
| 6128541 | Optimal auto-tuner for use in a process control network A device and method that automatically tune a valve controller coupled to a process control loop generate a plurality of sets of tuning parameters for use by the controller, deliver a test signal, such as a blocked sinusoidal signal, to the controller to ... | 10/03/2000 |
| 5077833 | Synthesizer receiver A receiver having a frequency synthesizer tuner permits channel selection by rotating a dial, and the output muting time during channel selection is varied in response to the rotational speed at which the dial is turned, so that a listener/operator can ga... | 12/31/1991 |
| 4731874 | Radio receiver having second receiver part for avoiding interference signals A radio receiver has a first radio receiving part which receives the signal of the desired radio broadcasting station, a first receiving field intensity detector which detects the receiving field intensity of the desired signal received by the first radio... | 03/15/1988 |
| 4597106 | AFT defeat arrangement A pair of stator contacts, which are positioned inside the tuner housing and are internally connected to the AFT circuit within the tuner housing, are positioned so that unused tuning coils carried by the station selector shaft of the tuner are momentaril... | 06/24/1986 |
| 4531233 | Variable increment tuning select A tuning control for an aircraft radio apparatus is disclosed for a variety of applications wherein a single control provides a coarse tuning increment and, having the direction of movement of the control sensed, changes to a finer tuning increment as a f... | 07/23/1985 |
| 4419639 | Key assembly A key assembly for receiving units employed in communications engineering, articularly for television receivers, comprises a plurality of mutually releasable depressible keys adapted to switch on storable, selectively adjustable electrical values supplied ... | 12/06/1983 |
| 4392254 | Mechanical tuner with microphonics elimination circuitry A mechanical radio receiver tuner with microphonics elimination circuitry is disclosed. During a mechanical tuning mode, the mechanical position of a movable tuning element provides an associated adjustable reactance which determines a control voltage for... | 07/05/1983 |
| 4373208 | Circuit arrangement for tuning into one of a number of radioelectric signals A circuit arrangement for tuning into one of a number of radioelectric signals receivable on a signal receiver set is provided in accordance with the teachings of the present invention. The circuit arrangement consists of a controllable oscillator, whose ... | 02/08/1983 |
| 4347628 | Rotary tuning mechanism A rotary tuning mechanism comprises an integral dielectric structure including a gear wheel with a first set of teeth extending from a first face surface and a second set of teeth extending radially from a circumferential surface, a shaft attached to the ... | 08/31/1982 |
| 4307422 | Receiver arrangement This application describes a receiver in which channel selection is controlled by a frequency synthesizer a sweep of available channels is made by a channel selecting arrangement and this sweep is arranged to be stopped when a signal is received. When the... | 12/22/1981 |
| 4281415 | Digital tuner A variable rate tuner is one in which the rate of change of tuned frequency with respect to tuning shaft rotation varies automatically as a function of the shaft rotation speed. In this tuner the circuitry is completely digital, including a shaft encoder ... | 07/28/1981 |
| 4271434 | Channel selector A channel selector for a radio frequency receiver system including a phase locked loop frequency synthesizer for synthesizing a local oscillator frequency corresponding to a closely determined frequency to a transmitted signal of a desired receiving chann... | 06/02/1981 |
| 4267601 | Tuning control apparatus for a frequency synthesizer tuner Tuning control apparatus is provided for use with a frequency synthesizer tuner of the type having a phase-locked loop including a reference oscillator, a variable frequency oscillator to produce a local oscillating signal, a programmable frequency divide... | 05/12/1981 |
| 4266295 | Continuous tuning control particularly adapted for use in variable frequency receivers and generators This disclosure describes a continuous tuning arrangement for a variable frequency response circuit of the type covering a relatively wide frequency range. Many techniques for accommodating a wide frequency range are known and include synthesizers, wavefo... | 05/05/1981 |
| 4237556 | Superheterodyne receiver having distortion reducing circuitry A superheterodyne receiver having means for detecting distortion in the intermediate frequency signal and for controlling the local oscillator frequency in accordance with the detected distortion to thereby minimize the distortion. Means are also disclose... | 12/02/1980 |
| 4234962 | Automatic AFT defeat circuit A manual AFT switch and a manual FINE TUNE switch are configured so that whenever the FINE TUNE switch is engaged the AFT detector output is automatically disconnected from the AFT input of a tuning voltage control circuit. Furthermore a loading circuit c... | 11/18/1980 |
| 4234961 | Receiver comprising a tuning member and an automatic tuning correction suppression circuit By using a optical switch, which can be operated by the tuning knob of a receiver, signals can be obtained which accurately correspond to the operation of the tuning knob for switch-over of the receiver to a continuous manual tuning mode and for suppressi... | 11/18/1980 |
| 4232395 | Multiband radio receiver with electronic preset tuning system A multiband radio receiver having an electronic preset tuning system is provided with a switch which is ganged with a preset switch in the electronic preset tuning system, so that an automatic frequency control is interrupted from a local oscillator in pr... | 11/04/1980 |
| 4163203 | Tuning apparatus for selecting preset broadcast frequencies In a tuning apparatus for a broadcast receiver having a dial scale calibrated to represent broadcast frequencies over a predetermined frequency band, and along which an indicator is movable for indicating the broadcast frequency to which the tuning appara... | 07/31/1979 |
| 4138654 | Digitally tuned circuit including switching of bank capacitors between plural tuned circuits An electrically tuned filter arrangement including several tuned filters which may alternatively be coupled to the input and output of the filter arrangement so as to provide the arrangement with different tuning ranges. Each tuned filter has a tuning inp... | 02/06/1979 |
| 4123781 | Television tuner with fine tuning means A television tuner including a fine tuning mechanism, said mechanism comprising a cam body provided to a sleeve rotatably disposed around the operating shaft, said cam body having a cam surface adapted to convert rotary motion to reciprocating motion, and... | 10/31/1978 |
| 4054853 | UHF television tuner with electrical fine tuning An electrical fine tuning system for a UHF television tuner utilizes a voltage variable capacitor for adjusting the operating frequency of the oscillator. The capacity of the voltage variable capacitor is determined by a potentiometer that is mounted conc... | 10/18/1977 |
| 4052675 | UHF tuner arrangement A continuously variable UHF tuner arrangement is provided wherein a single channel selector shaft is provided with a detent position for each of the 70 UHF television stations and a highly accurate detent mechanism is employed to return the channel select... | 10/04/1977 |
| 3982187 | AFC defeat mechanism A mechanism for driving a television tuner channel indicator located behind a panel and mounted concentrically with a selector shaft and a concentric fine tuning shaft. The driving mechanism includes a two-piece gear housing mounted on the selector shaft ... | 09/21/1976 |
| 3968442 | Receiver tuning circuit A tuning circuit in which when the field strength of a received signal drops out, a tuning voltage from a switch can be applied to a capacitor so that the circuit stays tuned to the received signal. The voltage at the capacitor can further be controlled f... | 07/06/1976 |
