Bizarre Patents
Mouthguard made at least partially from an edible candy
A mouthguard includes a U-shaped upper bite plate which removably fits over upper teeth of a person, with the entire upper bite plate being made from a soft, deformable and edible gummi candy.
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| Number | Title | Issue Date |
| 8185072 | Method and apparatus for power reduction for interconnect links A power reduction proposal for a receiver circuit that adheres to a plurality of defined states and masking logic to mask the output of the squelch receiver. Furthermore, the proposal utilizes and counters to count the various timeout conditions. Consequently, the s... | 05/22/2012 |
| 7369671 | Switching structures for hearing aid A hearing aid is provided with a a programmable, signal processing circuit electrically connecting an input system to an output system, a magnetic field sensor, and a selection circuit connected to the magnetic sensor. The selection circuit may be adapted to control... | 05/06/2008 |
| 7248713 | Integrated automatic telephone switch A hearing aid includes a microphone for providing an electrical signal representative of a received acoustic signal, a means for filtering the electrical signal and a means for automatic switching. Upon detecting a presence of a magnetic field, the means for automat... | 07/24/2007 |
| 7180933 | Squelch circuitry for high speed high frequency operation A squelch circuit for operating at high speed and at high frequencies includes a squelch input unit, a low swing pre-amplifier and a sampling and decision circuit. The squelch input unit pre-processes the positive and negative signals of an input signal to generate ... | 02/20/2007 |
| 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 |
| 7120408 | Differential signal squelch detection circuit and method An electrical circuit detects a “squelch,” or “out-of-band,” state of a differential signal pair having a positive (“p”) signal line and a negative (“n”) signal line. In one embodiment of the invention, a first and a second comparator each have posit... | 10/10/2006 |
| 6961551 | Dual speed squelch circuit and method Squelch circuit and method useful in frequency-scanned radio receivers are provided. Generally, the squelch circuit includes an audio-removal filter coupled to receive an audio signal. The passband of the audio-removal filter is selected sufficiently high relative t... | 11/01/2005 |
| 6799026 | Handset diversity in wireless communications system A diversity reception handset includes a receiver for receiving pilot and plural increments of traffic sent from a base station within a service area of a wireless communications network. The handset includes at least two antennas, a switch for switching a receiver ... | 09/28/2004 |
| 6725017 | Multi-channel self-interference cancellation method and apparatus for relayed communication Multi-channel self-interference cancellation is provided in relayed electromagnetic communication between a first device and one or more other devices on one or more shared frequency channels. Specifically, near signals are generated at the first device and transmit... | 04/20/2004 |
| 6600913 | Two-port demodulation device A two-port millimeter-wave demodulation device is particularly adapted for wireless 60 GHz transmission systems. The device for the downconversion and demodulation of a modulated RF signal does not comprise a mixing stage. The RF signal to be downconverted is ... | 07/29/2003 |
| 6233443 | Apparatus and method for reducing co-channel radio interference An apparatus and method reducing interference between multiple frequency modulated, FM, voice transmissions present in the same frequency bandwidth by receiving a radio signal which includes a first FM voice signal to be demodulated along with one or more... | 05/15/2001 |
| 6101376 | Squelch circuit and methodology for a multi-level quantizer An improved squelch circuit and methodology for a multi-level quantizer employing one or more amplifiers to amplify an input signal at different gains. Comparators coupled to corresponding amplifiers or amplifier stages produce pulses based on comparing t... | 08/08/2000 |
| 6029053 | Apparatus and method for reducing co-channel radio interference An apparatus and method reducing interference between multiple frequency modulated, FM, voice transmissions present in the same frequency bandwidth by receiving a radio signal which includes a first FM voice signal to be demodulated along with one or more... | 02/22/2000 |
| 6009304 | Two-output low-noise down converter circuit The invention provides a two-output low-noise down converter circuit which is improved in the isolation between two outputs. In the two-output low-noise down converter circuit, an input signal is divided into two divisional signals of different polarizati... | 12/28/1999 |
| 5859880 | Multi-stage squelch apparatus, and associated method, for a multi-branch receiver Apparatus, and an associated method, for a multi-branch receiver. A receive signal is received at various receiver branches of the multi-branch receiver. Subsequent to selected processing stages of processing of the receive signal, determinations are made... | 01/12/1999 |
| 5630217 | Error-free pulse noise canceler used in FM tuner A pulse noise canceler in which the sensibility of FM pulse noise detection is decreased when an FM wave exceeding the minimum bandwidth which is predetermined of an FM wave detector is input to the pulse noise canceler. In order to detect pulse noise fro... | 05/13/1997 |
| 5490166 | Data muting method and apparatus using delay circuits for communication systems A receiver 700 having an audio output device 326 is disclosed. The receiver 700 receives a carrier signal modulated with data, voice, or a combination of both. The receiver 700 includes a demodulator 708 for demodulating the received carrier signal. The d... | 02/06/1996 |
| 5465404 | Communications receiver with an adaptive squelch system A wireless communications receiver having an adaptive squelch system and operable in multiple states including a receiver (11) that provides a received signal when operating in a clear (unscrambled) state and when operating in a secure (scrambled) state; ... | 11/07/1995 |
| 5454118 | Method and apparatus for prevention of squelch chatter A squelch circuit (118) is provided having a squelch hysteresis window for preventing squelch chatter in a communication device (100). The communication device (100) includes a plurality of squelch states. The squelch circuit (118) comprises a first means... | 09/26/1995 |
| 5369791 | Apparatus and method for discriminating and suppressing noise within an incoming signal An apparatus and method for discriminating and suppressing noise within an incoming signal which provide a first signal processing unit for processing the incoming signal to generate a first iteration signal representing average difference signal level of... | 11/29/1994 |
| 5339463 | FM receiver with muting circuit FM receiver including means for controlling the center frequency of an IF filter, which is relatively narrow-banded with respect to the channel bandwidth, in dependence on the desired modulation, the receiver including a signal processing unit comprising ... | 08/16/1994 |
| 5309443 | Dynamic muting method for ADPCM coded speech A method and apparatus are provided for muting a audio signal in a digital communication system. The method includes the steps of integrating an indicated error per frame for a time interval and comparing the integrated value with a threshold. The method ... | 05/03/1994 |
| 5303408 | Squelch detector A communication device (100) having a receiver (106) and an audio output device (116) is provided. The communication device (100) includes a digital signal processor DSP (110) for measuring the level of signal energy in a first segment of the frequency sp... | 04/12/1994 |
| 5241698 | Radio receiver operational checking method and system including reactive coupling A clock-driven pulse source is used to apply repetitive short pulses to the squelch control point of the squelch circuitry of a radio receiver to deactivate momentarily the squelch circuitry at regular intervals (FIGS. 2B, and 2D). The repetitive short pu... | 08/31/1993 |
| 5212827 | Zero intermediate frequency noise blanker An essentially zero intermediate frequency receiver (100) for recovering an information signal from a received signal (110), which includes means for blanking noise signals which may otherwise deteriorate performance, comprises a receiver (10) for recover... | 05/18/1993 |
| 4991227 | Squelch circuit with variable squelch tail and variable hysteresis The period of time that the squelch circuit maintains a radio receiver's audio amplifier active after the signal strength of a received carrier fades below a threshold level is inversely proportional to the strength of the received carrier immediately bef... | 02/05/1991 |
| 4891824 | Muting control circuit A muting control circuit is provided in which muting is performed when any one of a plurality of unlock detection signals is detected, indicating circuits is unlocked or when a data error is detected in a demodulator. In this way, reading time can be shor... | 01/02/1990 |
| 4704736 | Method and apparatus for reducing interference in broadcast receiver For elimination of pulse type interference in an FM receiver by intermittent blanking of the received signal while interfering pulses are present and substitution of a synthetic signal during the blanking intervals, the synthetic signal substituted during... | 11/03/1987 |
| 4703507 | Noise reduction system A noise reduction system and method for reducing noise occurring during pauses in information bearing audio signals has an audio input connected to one input of a differential output circuit. A variable gain circuit has an input connected to the audio inp... | 10/27/1987 |
| 4648126 | Noise detector Noise detector for detecting noise pulses in a non-limited radio broadcast signal modulated on a carrier, comprising an amplitude detection circuit and coupled thereto a first signal comparison circuit having a signal input and a threshold input, a first ... | 03/03/1987 |
| 4648127 | Noise detector Noise detector for selecting noise pulses from a non-limited FM radio broadcast signal modulated on a carrier, comprising an amplitude detection circuit and a signal comparison circuit. This signal comparison circuit produces a detection signal when its i... | 03/03/1987 |
| 4637066 | Noise blanking signal generator for AM radio A noise blanking signal generator for an AM radio receiver includes a product detector adapted to receive an IF signal modulated by an AF signal and synchronously detect the AF signal, a first low pass filter adapted to derive from the product detector a ... | 01/13/1987 |
| 4535460 | Method and apparatus to filter pulsed RF signals A method and apparatus for receiving and detecting pulsed RF signals within first frequency band. Incoming pulsed RF signals are supplied to a linear amplifier which amplifies any of the signals within a broader second frequency band. The pulsed RF output... | 08/13/1985 |
| 4521917 | Noise blanking circuit and method Noise blanking is provided by amplifying, limiting and detecting received signals. The detected signals are compared with a threshold circuit. The leading edge of each detected signal that rises at a rate greater than a selected rate to exceed an amplitud... | 06/04/1985 |
| 4480335 | Noise removing apparatus in an FM receiver A noise removing apparatus in an FM receiver includes a high-pass filter (29) receiving an output from an FM detector circuit (11), a gate (15) being interrupted in response to a pulsive noise detected by level-discriminating an output from a variable gai... | 10/30/1984 |
| 4479252 | Device for reduction of the false alarm ratio and monitor receiver comprising such a device of this nature A monitor receiver incorporating a device for reducing the false alarm ratio comprises a frequency changer, a wobbulated oscillator, two band pass filters of which the central frequencies are constant and staggered, two logarithmic amplifiers and two ener... | 10/23/1984 |
| 4414689 | Squelch circuit A squelch circuit for a radio receiver provides for applying the audio signal that has been detected and demodulated to both a low pass channel and high pass channel. The low pass channel passes the audio signal to a low frequency bandpass filter where on... | 11/08/1983 |
| 4411021 | Automatic threshold squelch An automatic threshold squelch circuit, responsive to noise signals from the receiver demodulator, having automatic means for setting the squelch level. A noise detector is coupled to the demodulator and to a comparator and sample and hold circuit such th... | 10/18/1983 |
| 4411020 | Power efficient radio receiver apparatus An improvement in a radio receiver having a power supply and an audio amplifier circuit comprises a switching circuit interposed between the power supply and the audio amplifier circuit and including a control input responsive to a signal of predetermined... | 10/18/1983 |
| 4388731 | Receiver with squelch for offset carrier environment A receiver with squelch capability includes squelch gate control circuitry which operates the squelch gate on the basis of substantially pure noise even in environments such as offset carrier networks which cause or create substantial interference energy ... | 06/14/1983 |
