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

Icon_funbox Did You Know...

...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!

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 455/77 - With tuning


Subclass of Class 455 - Telecommunications
Definition: Subject matter having means to control or adjust the frequency
No. of patents: 227
Last issue date: 12/06/2011


    3        
NumberTitleIssue Date
7058408Method and apparatus for enabling discontinuous transmission feature on a mobile station
In accordance with the preferred embodiments of the present invention, a method (400) and an apparatus for enabling discontinuous transmission feature on a mobile station (150) are described herein. The apparatus generally includes a transmitting unit ...
06/06/2006
7050771Method and apparatus for increasing a probability that a dual-band mobile station will acquire a desired autonomous system
A method for operating a dual-band mobile station (10) includes a first step of (a) storing information in the mobile station. The stored information includes an ordered list of frequency bands (Band Order Table 24A). For example, at least one frequenc...
05/23/2006
7050818Location based service request system
A wireless phone based system to accommodate users of wireless phones for providing information as to the location of certain services such as gasoline stations, movie theatres, drug stores, etc., includes the utilization of a GPS receiver and a wireless phone, with...
05/23/2006
7047023GPS RF front end IC with frequency plan for improved integrability
A GPS RF Front End IC using a single conversion stage, which is immune from self jamming from clock signal harmonics generated internally or from dominant clock signal harmonics generated externally by the subsequent baseband GPS processor which uses a clock of 48...
05/16/2006
7034661Apparatus and method for interrogation of passive sensors
A monitoring system, particularly suitable for monitoring conditions (e.g. pressure or temperature) of a vehicle tire comprises a passive sensor (102, 104), an antenna (106) associated with said passive sensor, and switching means (108) for cont...
04/25/2006
7031694Method and system for providing a service
The invention is directed to a method for providing a service to a user comprising the steps of defining an area in which the service is available, transmitting information to a plurality of users in the said area at the same time via a common channel to determine i...
04/18/2006
7020230Frequency synthesizer for dual mode receiver
In a portable dual mode receiver circuit, a dual modulus clock system is provided which can, by selective use of integer division on a multiplied master clock, select specific channels with two different channel spacings in several different bands, providing power a...
03/28/2006
6985702Transceiver with frequency multiplier tracked to frequency generator
A transceiver has frequency generating means for generating a first signal at a first frequency. The frequency generating means has first tank means for resonating at the first frequency. The transceiver further has frequency multiplication means for multiplying the...
01/10/2006
6983128Radio control transmitter and receiver
Radio control is used for different types of models, e.g. aircraft, cars and boats. Commonly, a number of different radio channels are allocated in a frequency band for use in radio control. If a modeller finds her or his intended channel in use, s/he can either wai...
01/03/2006
6980775Automatic 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
6975582Dual mode satellite/cellular terminal
A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and t...
12/13/2005
6975735Sound collecting device minimizing electrical noise
A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an electroacoustic transducer and a vibrating circuit. The transducer is exposed to t...
12/13/2005
6975683Radio frequency burst interference mitigation
Coherent phase-shift keying (“PSK”) radio frequency (“RF”) systems locate a differential decoder (“DE”) close to the transmitter of a first transceiver for transmitting a message to a second transceiver that includes a receiver having has a differential ...
12/13/2005
6950478Transmitter and method having a low sampling frequency for digital to analog conversion
An apparatus and a method having a low sampling clock frequency for converting a digital signal having IF frequency channels to an analog IF signal. A DAC uses the sampling signal for converting the digital signal to the analog IF signal. A high-low RFLO signal gene...
09/27/2005
6944679Context-aware systems and methods, location-aware systems and methods, context-aware vehicles and methods of operating the same, and location-aware vehicles and methods of operating the same
Context-aware systems and methods, location-aware systems and methods, context-aware vehicles and methods of operating the same, and location-aware vehicles and methods of operating the same are described. In various embodiments, a context or location service module...
09/13/2005
6944804System and method for measuring pseudo pixel error rate
A system and method for measuring and utilizing a pseudo pixel error rate in digital data transmission is disclosed. As an alternative to measuring actual pixel error rate measurement, the present invention uses a pseudo pixel error rate detection scheme where the e...
09/13/2005
6931237Communication device
A communication apparatus is provided which employs two oscillators to generate a transmission signal and a reception signal, and prevents harmful spurious components from being produced. As shown in FIGS. 9A and 9B, the oscillation frequency fVCO2 ...
08/16/2005
6922551Interference prevention in a radio communications system
In a radio communications unit with several transceivers communicating in different frequency bands, a signal parameter of a selected channel is monitored in order to detect interference due to intermodulation products. The select channel is for example used by a lo...
07/26/2005
6912376Mobile phone transceiver
A multiple band transceiver (10) uses a fixed frequency oscillator (34) to generate a reference signal in both receive, mode and transmit mode for each frequency band. A dual-band variable oscillator (26) is used to tune signals in receive and transmit mode. The use...
06/28/2005
6865402Method and apparatus for using RF-activated MEMS switching element
The present invention features an RF-actuated microelectromechanical systems (MEMS) switch for use with switchable RF structures such as antennas. An antenna within each MEMS switch module is coupled to a tuned circuit and a detector. The DC voltage output of the de...
03/08/2005
6826388Mobile communication apparatus including dividers in transmitter and receiver
A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF b...
11/30/2004
6765628Method and apparatus for searching channels
A method for searching a predetermined satellite channel by making use of information available from the satellite. The method comprises three steps. The first step is searching for a service channel from the satellite, if found than the user look up table is...
07/20/2004
6628928Internet-based interactive radio system for use with broadcast radio stations
An interactive radio system is provided for use with broadcast radio stations wherein feedback is provided to subscribers of the system via the Internet. Interactive radio mobile units are mounted within vehicles or at other locations. Each mobile unit in...
09/30/2003
6628927Method and apparatus for transmitting and receiving signals
A method and apparatus for receiving a radio frequency signal and a method and apparatus for transmitting a modulation signal in a multiple channel radio system. The method for receiving the radio frequency signal involves mixing the radio frequency signa...
09/30/2003
6618579Tunable filter with bypass
An electrical circuit which includes a filter bypass mode. The circuit includes an amplifier including an inverting terminal, a noninverting terminal and an output terminal, at least one first capacitor coupled to the inverting terminal of the amplifier t...
09/09/2003
6542716Position registration for cellular satellite communication systems
A method for determining the position of a mobile radio telephone in a satellite communication system is disclosed. First, a mobile radio telephone scans a plurality of paging channels and measures the signal strength of the paging channels. The mobile ra...
04/01/2003
6501939Satellite communications adapter for a cellular handset
A dual-mode telephone with a satellite communication adapter is disclosed. According to one embodiment of the present invention, a cellular-type handportable phone is equipped with a connector for the attachment of accessories. This connector provide a sa...
12/31/2002
6487391Method and apparatus for selectively receiving a satellite broadcast signal or a cable television signal
The present invention provides an improved receiver capable of receiving either a satellite broadcast signal or a cable TV signal associated with a TV. The inventive receiver comprises a first BPF for filtering received broadcast signals, a first local os...
11/26/2002
6389273Adjacent channel interference reduction in a FM receiver
A processor controlled FM receiver implements a technique for reducing adjacent channel interference without requiring additional components. Initially, the technique determines whether a desired channel has interference. If so, signal information on adja...
05/14/2002
6370360Arrangement and method for radio communication
The present invention relates to a radio communication unit (20) comprising radio communication means (23, 25, 27) for communication (reception and/or transmission) in one or more frequency ranges with associated channel spacings. The radio communication ...
04/09/2002
6345172Radio system which overcomes signal interference from clock oscillation circuit
A radio system has a transmitting circuit for tuning in a transmitting frequency at a desired frequency, a control circuit for performing control of the whole of the radio system, a clock oscillation circuit operative to generate a reference clock for the...
02/05/2002
6337982Cordless telephony device having a scanning element to analyze a frame requesting a connection
A cordless telephony device includes a base station for radio communication with a handset on an operating frequency selected from a set of frequencies. The base station and handset include a scanning element for receiving and analyzing a connection reque...
01/08/2002
6259895Receiver and transmitter-receiver
In the receiver using a PLL synthesizer, there is a limit in reducing boot-up time or frequency switching time, which shortens battery life. A first local frequency L01 from a multiplier 22 and a receiving signal are input to a first frequency converter 10 to ...
07/10/2001
6223021Signal filtering in a transceiver for a wireless telephone system
In a wireless telephone system that utilizes a plurality of remote transceivers to carry telephony signals between wireless telephones and a central transceiver via a broadband distribution network, remote transceiver circuitry is provided to filter telep...
04/24/2001
6163710Method and apparatus for compliance to multiple frequency plans
A mobile radio for use in multiple different frequency plans is disclosed. The multiple different frequency plans, such as land-based plans (cellular, land mobile radio, etc.) and satellite-based plans may employ different frequency bands and, within thos...
12/19/2000
6101377Method and apparatus for improving multi-channel radio communication
A method for improving multi-channel radio communication. Firstly, providing a motor vehicle having a multi-channel radio. Secondly, mounting a visual display device to the motor vehicle in such a manner that the visual display device is visible from a di...
08/08/2000
6064862Method and apparatus for external band selection of a digital microwave radio
The system and method of the present invention facilitates the selection of a portion of an operating bandwidth and frequency of a digital microwave radio. The components include a transceiver mounted to a mounting plate having waveguide ports. The input ...
05/16/2000
6038434Method of and apparatus for receiving and displaying RDS data
A method of receiving and displaying RDS data, which are multiplexed to a broadcast electric wave, includes the steps of: receiving the broadcast electric wave; detecting predetermined data in the RDS data, which are included in the received broadcast ele...
03/14/2000
6014548Method and apparatus for facilitating detection of a synchronization signal generated by a satellite communication network
A method and apparatus for facilitating detection of a synchronization signal generated by a satellite cellular network by a multi-mode radiotelephone. Once detected, the radiotelephone is synchronized to the synchronization signal. The radiotelephone is ...
01/11/2000
6011960Telephone handset for operating in a plurality of wireless telephone system
A personal communications system permits a wireless handset to access either a cellular mobile telephone system (CMTS) or a private wireless telephone system (WTS) which shares the CMTS frequency band by utilizing those CMTS channels which are idle in the...
01/04/2000
    3        
 
Sign InRegister
Username  
Password   
forgot password?