Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8170523 | Super regenerative receiver and method of saving power of the same A low power super regenerative receiver and a method of reducing the power consumption of the low power super regenerative receiver are provided. The super regenerative receiver includes: an oscillator having a start-up time period starting oscillation that varies a... | 05/01/2012 |
| 8155617 | Lightweight MRRM with radio agnostic access selection in the core network A method and arrangement for making a handover decision in a multi-access communication network is disclosed. A first set of criteria is determined for when a handover between at least two access paths should be performed and a report is sent when at least one crite... | 04/10/2012 |
| 8064873 | Multi-protocol RF transceiver A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow communication between the two devices. The RFID reader utilizes an analog front end and a digital backend. In the receiver portion of the transceiver, the front end of the RFID read... | 11/22/2011 |
| 7890080 | Multi-protocol radio frequency identification transceiver A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow communication between the two devices. The RFID reader utilizes an analog front end and a digital backend. In the receiver portion of the transceiver, the front end of the RFID read... | 02/15/2011 |
| 7856224 | Systems and methods for recovering a signal of interest from a complex signal A system for recovering a signal of interest from a complex signal is provided. The system includes a plurality of different oscillators. Each of the plurality of oscillators is configured to facilitate improving a signal-to-noise ratio of an input complex signal by... | 12/21/2010 |
| 7689195 | Multi-protocol radio frequency identification transponder tranceiver A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow communication between the two devices. The RFID reader utilizes an analog front end and a digital backend. In the receiver portion of the transceiver, the front end of the RFID read... | 03/30/2010 |
| 7565129 | Super-regenerative receiver A super-regenerative receiver including a super-regenerative oscillator is disclosed. The super-regenerative receiver includes a super-regenerative oscillator for generating an oscillation signal when receiving driving current exceeding a predetermined critical leve... | 07/21/2009 |
| 7418237 | Electric circuit and transmission method for telemetric transmission The invention relates to an electric circuit for a telemetric transmission. A semiconductor transistor switch switches a quenching circuit into an electrically conductive state to prevent oscillation of a resonance circuit. The semiconductor transistor switch switch... | 08/26/2008 |
| 7373143 | Adaptive radio patch interface system The present invention is directed to an RF communications system that includes a first radio processor module having a first receiver portion programmed to convert a first analog receive signal into a first digital audio receive signal. The first analog receive sign... | 05/13/2008 |
| 7333793 | Method for performing packet switched handover in a mobile communication system The invention relates to a method and system for performing packet switched handover in a mobile communication network. The system comprises a mobile node, a first and a second packet switching node. The method enables the parallel sending of logical link layer fram... | 02/19/2008 |
| 7292093 | Envelope detector with DC level shifting An envelope detector that does not generate an undesirable DC offset at its DC output signal. An envelope detector according to the present teachings includes a circuit for performing a DC level shift on an AC input signal applied to the envelope detector such that ... | 11/06/2007 |
| 7272368 | System and method for reduced deviation time domain FM/PM discriminator to achieve a reduced bandwidth frequency or phase modulation communications channels The present disclosure provides a receiver for receiving a narrow frequency deviation frequency modulated or phase modulated base band signal including a mixer for mixing the received narrow frequency deviation signal to generate an intermediate frequency signal, a ... | 09/18/2007 |
| 7224751 | Device and method for checking whether a signal with a predetermined frequency is being received A device and method are disclosed, whereby the normally complicated and difficult frequency determination is achieved by simply arranged and executed measures, namely by means of larger, smaller and/or equal comparisons and a counting of certain events. The inventio... | 05/29/2007 |
| 7215936 | Super-regenerative receiver including phase-locked loop An improved low-cost super-regenerative receiver includes sampling phase-locked loop. Phase sampling is controlled by the quench signal (264). In the preferred embodiment, logic state HIGH to logic state LOW transition of the quench signal (264) define... | 05/08/2007 |
| 7206578 | Apparatus and method for system selection An apparatus and method of system selection. A synchronization channel is received. A synchronization channel message received on the synchronization channel is decoded. An acquisition assistance channel is received. An advanced services information message received... | 04/17/2007 |
| 7149498 | Detecting usable frequency channels by exploiting complex polyphase filter operation A circuit arrangement for detecting a usable frequency channel includes first and second devices for performing frequency conversion. The first and second frequency conversion devices have respective local oscillator inputs to which respective local oscillator signa... | 12/12/2006 |
| 7076219 | Receiver for weak radio wave An aspect of the present invention provides a receiving circuit that includes a mixer configured to receive a signal and a local signal to mix the signals, the mixer configured to convert the signals into an intermediate frequency signal, an IF filter configured to ... | 07/11/2006 |
| 7046122 | Receiver circuit A detector receiver circuit for use as a wake-up detector for detecting an amplitude modulated carrier signal includes an antenna for receiving the modulated carrier signal; and a transistor, such as an FET, which is connected to the antenna and configured to operat... | 05/16/2006 |
| 7043223 | Super-regenerative radio frequency receiver and its data receiving method A high sensitivity of a Super-Regenerative Radio Frequency Receiver and its method is provided in the embodiment of the present invention. By using a common-mode feedback circuit and by replacing the rectifier with a feedback integral-rectifier, the rectifier, the l... | 05/09/2006 |
| 6993315 | Super-regenerative microwave detector A resonant tunneling diode or diode array oscillator (10) including a resonant diode (11) is coupled to a millimeter-wave source (14) and a quench generator (16) for periodically quenching the oscillations so that the average oscillation ... | 01/31/2006 |
| 6975158 | Noise canceling circuit A low-pass filter eliminates a high-frequency component contained in an input signal. An inverter outputs a signal at a high level or a low level in response to an output of the low-pass filter that is larger or smaller than a threshold level. A one-shot pulse gener... | 12/13/2005 |
| 6950659 | Method of allocating radio resource A method of allocating a radio resource for a traffic burst is disclosed. The method includes the steps of selecting at least one cell having a pilot signal strength that is greater than a pilot signal strength of a primary cell, requesting a communication resource ... | 09/27/2005 |
| 6946989 | Transponder, including transponder system In a transponder (19) for amplification of a received signal (60) into an antenna (1), to a signal (61) for retransmission, and where the retransmitted signal (61) possibly may have information superimposed, a quenched oscillator (... | 09/20/2005 |
| 6917787 | System and method for superheterodyne frequency multiplication signal expansion to achieve a reduced bandwidth frequency or phase modulation communication channel The present disclosure provides a method and apparatus for communicating a base band signal via a communication channel that connects a transmitter to a receiver comprising the steps of modulating the base band signal into a low frequency deviation modulated signal,... | 07/12/2005 |
| 6917336 | Miniature ultra-wideband active receiving antenna According to some aspects of this invention, a compact, broadband active receiving antenna uses one or more high transconductance transistors such as Field Effect Transistor(s) paired with another Transistor and arranged in a Cascode amplifier configuration. Some em... | 07/12/2005 |
| 6904101 | Tuneless narrow-band super-regenerative receiver A super-regenerative receiver is provided with a regenerative oscillator controlled by a frequency sweep circuit to control the bandwidth at which the receiver can receive a signal. A quench control circuit controls both the regenerative oscillator and the frequency... | 06/07/2005 |
| 6873838 | Superregenerative oscillator RF receiver with differential output A superregenerative oscillator RF receiver having a differential output that has the advantage of providing an improved operating range and increased receiver sensitivity without affecting receiver cost or current requirements. The present invention comprises a rece... | 03/29/2005 |
| 6810307 | Thermostat having a temperature stabilized superregenerative RF receiver An RF controlled thermostat/controller is disclosed for an HVAC system having a superregenerative RF receiver which uses the temperature sensor of the thermostat for temperature stabilization of the superregenerative RF receiver. The superregenerative RF receiver pr... | 10/26/2004 |
| 6690259 | Security system to enable authenticated access of an individual to a protected area A security system to enable authenticated access of an individual to a protected area, including a remote control unit (22) with a transponder (28), carried by the individual, which transmits an identification code group on reception of an interrogation s... | 02/10/2004 |
| 6668165 | Inverted super regenerative receiver An amplifier for high gain, narrowband signal amplification is disclosed. An embodiment is an amplifier including a first means capable of oscillating and a second means for controlling the operating state of the first means between oscillation and close ... | 12/23/2003 |
| 6496492 | Hand off control for reducing rate of occurrence of forced disconnection of communication A hand-off control method is disclosed that can reduce the rate of occurrence of forced disconnection of communication. The intensity of signals received from a base station is periodically measured in a mobile station, the amount of relative change in re... | 12/17/2002 |
| 6421535 | Superregenerative circuit A superregenerative circuit which is operable in a transmit mode and a receive mode of operation. A superregenerative oscillator and a single antenna are functional in both modes. To minimize any undesired RF energy which may be radiated during the receiv... | 07/16/2002 |
| 6389275 | Signal receiver and method thereof, transceiver, and network system A signal receiver includes a superregenerative circuit for feeding back a part of an output signal to form part of an input signal through a feedback route to execute a superregeneration, a capacitance element disposed in the feedback route of the superre... | 05/14/2002 |
| 6072997 | Frequency discriminator for a direct conversion receiver In a frequency discriminator for a direct conversion receiver having a simple construction, in which operations for FM demodulation by direct conversion are simplified, two-signal components I and Q, which are inphase and quadrature, respectively, in a ba... | 06/06/2000 |
| 5946609 | Reduced-radiation radio signal receivers A radio receiver with isolation between an antenna and a regenerative oscillator/detector. The isolation is provided by periodically (at the receiver's quench frequency) uncoupling the antenna from the regenerative oscillator/detector. The receiver prefer... | 08/31/1999 |
| 5926750 | Receiver In accordance with the present invention, a receiver of the type receiving both a signal subjected to FM (Frequency Modulation) and a signal subjected to orthogonal modulation is capable dealing with the two different kinds of signal by use of a single de... | 07/20/1999 |
| 5907799 | Process for operating at least one receiver of radio signals, placed in the vicinity of a radiating facility or apparatus A process for allowing two or more receivers to share the same nominal frequency or close nominal frequencies, preferably without these receivers blinding one another or disturbing one another is described. The process preferably includes subjecting a rad... | 05/25/1999 |
| 5757267 | Battery-operated receiver for wireless audible indication system A wireless audible indication system comprising a transmitter and a receiver. An embodiment of the transmitter includes a crystal oscillator which produces a signal having a predetermined audio frequency. A duty cycle limiting circuit limits the duty cycl... | 05/26/1998 |
| 5751197 | Low-power, self-quenching superregenerative detector A low-power, self-quenching superregenerative receiver utilizes a single-port SAW device coupled to an RF oscillator to establish the frequency of oscillation at the output of the RF oscillator. A diode detector is coupled from the oscillator output for d... | 05/12/1998 |
| 5742902 | Super-regenerative circuit apparatus for a door operator receiver and door operator incorporating the same A door operator includes a low noise, low radiation emission but high sensitivity super-regenerative receiver. The low radiation emission of the receiver allows the installation of plural operators in close proximity. The door operator receiver includes a... | 04/21/1998 |
