U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5996127

Wearable Device For Feeding and Observing Birds and Other Flying Animals

A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.

Newsletter  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.

 

Class 455/191.1 - With plurality of tuned circuits


Subclass of Class 455 - Telecommunications
Definition: Subject matter including two or more tuned circuits each
No. of patents: 89
Last issue date: 04/10/2012


1      
NumberTitleIssue Date
8155609Switch-able band-tracking input filter for combination tuner
The present invention relates to a combination RF tuner capable of receiving signals from the FM radio band and from the TV band. Prior art combination tuners had to compromise in quality resulting in combination tuners that neither exhibited high-end FM nor TV-sign...
04/10/2012
8121568Radio frequency handling device
A radio frequency signal handling device and a mobile communication device comprising such a radio frequency signal handling device. The radio frequency signal handling device comprises a first terminal interfacing external entities in the form of an input where rad...
02/21/2012
7937055Timeshifting for a multiple-tuner vehicle radio system
Methods and apparatus are provided for timeshifting audio content in a multiple tuner audio system comprising a first tuner and a second tuner. One operating method involves maintaining a first data storage element for the first tuner, maintaining a second data stor...
05/03/2011
7720452Reception circuit, radio-controlled timepiece, and reception circuit control method
A reception circuit can receive a plurality of standard time signals and has a reception means for selectively receiving and demodulating any one of the plural standard time signals, and a control means for outputting a control signal that controls the reception mea...
05/18/2010
7515887Radio-controlled timepiece
In a radio-controlled timepiece, a tuning unit outputs a signal corresponding to a radio signal. An amplifier unit amplifies a signal output from the tuning unit. A receiving unit that extracts the time code from the amplified signal has a filter unit that selective...
04/07/2009
7447489Digital tuner
A digital tuner of a digital broadcast receiver provided. The digital tuner includes: an IB IF unit for converting an IB signal of the RF signal output into an ID IF signal; an OOB IF unit for converting an OOB signal of the RF signal output into an OOB IF signal. T...
11/04/2008
7437134Tuner arrangement
A tuner arrangement is provided comprising one or more tuners. Each tuner has two or more frequency changers, each comprising a mixer and a local oscillator. A controller controls the local oscillators in response to receipt of a channel select request. The controll...
10/14/2008
7403756Highly-integrated MEMS-based miniaturized transceiver
The present invention is directed to a highly-integrated MEMS-based miniaturized transceiver. The transceiver utilizes a low band front-end to direct sample low band signals and a high band front-end to translate high band signals that cannot be directly sampled to ...
07/22/2008
7369827System and method for communicating stored power measurement parameters between devices in a communications system
During tuner manufacture, the unique power parameters as a function of frequency and channel are stored on a memory unique to each tuner. When the tuner is subsequently incorporated into another device, such as a modem, the stored power parameters are made available...
05/06/2008
7366478Partitioned radio-frequency apparatus and associated methods
Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and th...
04/29/2008
7363015Wide-frequency-range television tuner
A television tuner includes a tuning circuit having two first varactor diodes for changing a tuning frequency, a mixer for converting a television signal to an intermediate frequency signal, an oscillator having a second varactor diode, and a PLL circuit for outputt...
04/22/2008
7304533Integrated channel filter using multiple resonant filters and method of operation
A circuit includes a first filter comprising a first inductor coupled to a first variable capacitor, wherein the first filter is associated with a first resonant frequency. The circuit further comprises an amplifier coupled to the first filter and a second filter co...
12/04/2007
7292829Power amplifier efficiency
The present invention relates to a method and an arrangement for optimizing the efficiency of a power amplifier (1) that is utilized for transmission of radio signals in a portable radio communication device, such as a mobile phone. The impedance loading the ...
11/06/2007
7292831Radio communicate method and system
A transmitter 1 transmits from a transmission antenna 7 a mixture signal containing a radio-frequency (RF)-band modulated signal, and a portion of power of a local oscillation signal used for frequency conversion. Meanwhile, a receiver 8 detects...
11/06/2007
7286804Receiver 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
7236756Tuning signal generator and method thereof
A front end tuning system includes a tuning signal generator. The tuning signal generator includes a digital-to-analog converter (DAC) to receive a pre-conditioned tuning signal at a reference input, to receive a digital value at a digital control input, and to prod...
06/26/2007
7212793Radio reception apparatus and radio reception method
A radio reception apparatus is a radio reception apparatus for demodulating a multicarrier signal modulated according to multicarrier modulation. It includes a plurality of antenna sections, each for receiving a multicarrier signal, a plurality of carrier selection ...
05/01/2007
7196739Multi-channel tuner apparatus
A multi-channel tuner apparatus is provided which is capable of simultaneously and independently selecting a plurality of channels for reception. The apparatus comprises a plurality of tuners, each of which converts a selected channel to a near-zero intermediate fre...
03/27/2007
7161416Programmable filter
A filter wherein the poles and zeroes are programmable in a high speed control loop to form a particular desired filter profile. The control loop retrains the filter's poles and zeroes during the “off” time between the reception or transmission time slots. Desir...
01/09/2007
7120407Receiver 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
7095454Broadband single conversion tuner integrated circuits
A tunable receiver is disclosed including a plurality of select filters to perform an initial band selection, a variable-gain low noise amplifier (LNA) whose gain is controlled to prevent its output power level to exceed a pre-determined power threshold, a plurality...
08/22/2006
7046960Relay apparatus
While a spectrum waveform of an output signal from a subtracter (207) is visibly monitored, an operator controls a variable phases shifter (208) based upon a second control signal (CL2) so that a shape of a spectrum waveform of an output signal ...
05/16/2006
7002639Dual digital television tuner
A dual digital television tuner includes first and second direct conversion circuits, each having a pair of mixers and a local oscillator, in which a digital television signal is input to the pair of mixers, which directly output baseband signals. The first direct c...
02/21/2006
6950639Local oscillator for generating an HF signal for direct mixing by using avalanche photodiodes
A local oscillator for use in an optoelectronic distance measurement system for generating a narrow-band HF signal for direct signal mixing with a reception signal generated by an avalanche photodiode (2) from a light signal impinging on the latter, with the ...
09/27/2005
6927805Compactly-designed television receiver
A television receiver intended to decrease the number of expensive SAW filters to achieve low cost and a compact design. A trap circuit is interposed between a mixer and a SAW filter. During reception of a television signal, one of the trap frequencies at which the ...
08/09/2005
6925291Electronic 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
6925289Broadcast receiver and channel scanning method
A channel scanning method in a multi-channel digital broadcast is provided for enabling a user to identify the broadcast contents of a channel being currently received with accuracy during the channel scan, even though the broadcast contents may change within a chan...
08/02/2005
6888580Integrated 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
6822697Television tuner that generates no interfering signal
Needless signal that causes interference is prevented from entering to eliminate the generation of interfering signal. A television tuner is provided with a band switching circuit to which television signals of a plurality of channels arranged in a predetermined fre...
11/23/2004
6799022Input circuit for FM/AM radio receiver
An input circuit for an AM/FM radio receiver having an FM intermediate frequency rejection circuit and an AM image frequency rejection circuit, an FM input circuit for receiving frequency-modulated input signals and an AM input circuit for receiving amplitude-modula...
09/28/2004
6760079TV tuner unit having a resonance network
A TV tuner unit uses a frequency-selective element before or after the resonance stage of either a UHF or VHF tuner for separation of UHF signals from VHF signals. Thus, performance is preserved while eliminating the need for circuitry including high and low pass fi...
07/06/2004
6737945Digital broadcast receiving tuner suitable for miniaturization by placing tuner units on oppos surfaces on a board
A low-priced digital broadcast receiving tuner suitable for miniaturization will be provided. According to the present invention, it is possible to provide a low-priced digital broadcast receiving tuner having higher productivity as well as a less number of componen...
05/18/2004
6625431Tuner 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
6606485Candidate system search and soft handoff between frequencies in a multi-carrier mobile communication system
The present invention encompasses a mobile station comprising a transmitter for transmitting outgoing signals from the mobile station and a receiver for receiving incoming signals, the receiver coupled to the transmitter and having N subreceivers, where N...
08/12/2003
6535722Television tuner employing micro-electro-mechanically-switched tuning matrix
A tuning circuit, as for a television receiver or video recorder, employs switchable tuning circuits including micro-electronic electro-mechanical switches for selecting the ones of an array of capacitors and/or inductors as is useful in tunable circuits....
03/18/2003
6456832Antenna circuit
An antenna circuit which is improved the deterioration of amplitude characteristic in a strong electric field, an antenna circuit for AM broadcasting which can surely inhibit and damp FM-band signals in the strong electric field and amplifies to output AM...
09/24/2002
6424824Apparatus for setting the tuning voltage of tunable resonant circuits
A setting apparatus for setting the tuning voltage of a tunable resonant circuit has an amplification device which amplifies an oscillator tuning voltage, output by a phase locked loop, nonlinearly to produce the tuning voltage. The gain of the amplificat...
07/23/2002
6400419Television tuner system
In a television tuner system, a printed board is disposed within a frame having a side plate. A tuner and an intermediate frequency circuit are disposed adjacent to each other on the printed board. The tuner has a mixer and a local oscillator. The interme...
06/04/2002
6321077Reception control system for automobile
A reception control system for automobiles according to the present invention includes tuners for a plurality of receivers for receiving various types of waves including at least an AM/FM broadcast wave, a TV broadcast wave and a GPS wave. The tuners are ...
11/20/2001
6317168Digital TV receiver for performing channel selection using stored channel information and method performing the same
Disclosed is a digital TV receiver performing a channel selection using stored channel information and a method for selecting a channel. With respect to a broadcasting signal which is not being currently viewed, the receiver activated at a predetermined p...
11/13/2001
1      
 
Sign InRegister
Username  
Password   
forgot password?