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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 5105164 | High efficiency UHF linear power amplifier An RF amplifier for a phase and envelope varying signal employs a class C operated device for high efficiency. In order to improve the linearity of the class C operated device, a signal corresponding to the envelope of the amplifier output is formed and a... | 04/14/1992 |
| 4885551 | Feed forward linear amplifier A feed forward circuit receives an input signal having at least one carrier therein in a prescribed frequency range. The input signal is applied to a first circuit path having a power amplifier that produces an output signal with a distortion component an... | 12/05/1989 |
| 4879519 | Predistortion compensated linear amplifier A distortion compensation circuit for power amplifier producing a prescribed distortion component receives an input signal having at least one carrier therein in a prescribed frequency range. The input signal is applied to a first circuit path having an a... | 11/07/1989 |
| 4879728 | DPSK carrier acquisition and tracking arrangement A QDPSK communication receiver includes a frequency source, apparatus for translating a received QDPSK signal having inphase I and quadrature phase Q components to baseband and a baseband demodulator. For each symbol period of the baseband QDPSK signal, a... | 11/07/1989 |
| 4873492 | Amplifier with modulated resistor gain control An automatic gain control circuit for an amplifier operating over a prescribed frequency range detects the output level of the amplifier; and couples a repeated predetermined waveform occurring at a rate greater than the reciprocal of twice the upper freq... | 10/10/1989 |
| 4861134 | Opto-electronic and optical fiber interface arrangement An opto-electronic organizer on a printed wiring card includes a plurality of opto-electronic devices each having electrical leads and at least one optical fiber extending therefrom and an optical fiber channel in the form of a closed loop for directing o... | 08/29/1989 |
| 4842370 | Optical spatial logic arrangement An arrangement for modifying an information carrying radiant energy beam array in which occurrences of a first prescribed pattern of radiant energy beams in the array are detected by producing images of said beam array and shifting the images relative to ... | 06/27/1989 |
| 4840449 | Optical fiber splice organizer An optical fiber organizer and splicing arrangement permits storage of variable lengths of surplus fiber. The organizer has a pair of separated cylinders extending from a first rectangular section of a base plate and a splice tray having opposite entrance... | 06/20/1989 |
| 4839907 | Clock skew correction arrangement A skew compensation circuit removes skew between a data stream and the clock of a processing module to which the data stream clocked at the same frequency is applied. A delayed data stream is generated. Either the data stream or the delayed data stream is... | 06/13/1989 |
| 4818824 | Closure for aerial telephone cable splices Splices between conductors in of an aerial telephone cable are covered by a closure located within a terminal. The closure has a large central section connected via tapered joints to two end sections. A settable liquid encapsulant is received in the centr... | 04/04/1989 |
| 4802227 | Noise reduction processing arrangement for microphone arrays A sound processing arrangement couples sound from a prescribed environment through a fixed microphone array to a signal processing arrangement having a specifiable preferred sound source location. The microphone pickup signals are combined with a set of w... | 01/31/1989 |
| 4789994 | Adaptive equalizer using precursor error signal for convergence control Operation of a decision feedback equalizer is enhanced by measuring the intersymbol interference precursor effect on each symbol decision output and utilizing that measurement information to update equalizer, transversal filter, tap multiplier coefficient... | 12/06/1988 |
| 4790017 | Speech processing feature generation arrangement In a speech signal recognition system, signals are data-reduced by eliminating highly-transient intervals: each successive time frame is temporarily identified as an anchor frame and compared to m preceding and m succeeding frames, whereby defined uniform... | 12/06/1988 |
| 4783809 | Automatic speech recognizer for real time operation A speech recognizer identifies an unknown utterance as a variable length string of stored reference patterns in a single pass through the time frame sequence of utterance feature signals. A plurality of reference pattern levels are used to permit strings ... | 11/08/1988 |
| 4760442 | Wideband digital signal distribution system Wideband digital signals, such as video program signals, are distributed to multiple customer locations by providing the wideband digital signals to all customer line interface units in an intermediate selection terminal which is remote from a central wid... | 07/26/1988 |
| 4754481 | Expanded partial response processing for analog signal enciphering and the like Partial response signal processing is applied to samples of an analog signal quantized in an amplitude range having a sufficient number of levels that a sample amplitude error of a small percentage of the total levels of the range is not readily perceptib... | 06/28/1988 |
| 4748639 | Reversible energy spreading data transmission technique In a data transmission system including a transmission medium that is subject to fast fades of duration longer than individual data symbols to be transmitted, a chirp filter is provided for time-spread processing the data signals prior to transmission. Th... | 05/31/1988 |
| 4710846 | Modular protector for telecommunications equipment An adaptor terminates one or more modular protectors of the same size obviating the need for a telephone company to carry an inventory of many different sizes. Each modular unit, which protects a telephone line, has a hollow shell into which two terminals... | 12/01/1987 |
| 4709390 | Speech message code modifying arrangement Natural quality and bit-rate for LPC speech synthesis is improved by encoding the LPC residual signal in a prescribed multipulse format formed for each LPC frame. Voiced, unvoiced, and mixed (hiss plus periodic) excitation is inherent. The speaking-rate i... | 11/24/1987 |
| 4704499 | Locking mechanism for aerial cable closure and terminals A boot, or adapter, for an aerial cable or terminal housing is made from hard material in two halves. The two halves are fastened, or hinged, at one longitudinal edge by a eye-hook-like device and at the other longitudinal edge by a snap lock device. An e... | 11/03/1987 |
| 4701954 | Multipulse LPC speech processing arrangement A multipulse-code approximation of of one frame of a predictive residual signal may lose the frame-to-frame redundancy. Accordingly, pitch redundancy removal during the iterative process of forming the multipulse sequence, rather than frame-to-frame code ... | 10/20/1987 |
| 4665548 | Speech analysis syllabic segmenter A speech pattern is partitioned into its syllabic subunits by generating signals representative of the speech energy and autocorrelation features of the time frames portions thereof. The peak energy time frames are identified from the frame energy signals... | 05/12/1987 |
| 4653606 | Electroacoustic device with broad frequency range directional response An electroacoustic device comprises an array of electroacoustic transducer elements for producing a prescribed directional response pattern at a first frequency. Each element includes apparatus for restricting the frequency range of sound waves incident o... | 03/31/1987 |
| 4617676 | Predictive communication system filtering arrangement A digital communication system includes a predictive decoder that is operative to convert received digital codes into a predictively decoded signal, e.g., speech signal, and to generate a set of predictive parameter signals and a signal representative of ... | 10/14/1986 |
| 4598590 | Electret transducer for blood pressure measurement A back electrode has a plurality of ridges on one surface. An electret foil is spaced from the ridged surface of the back electrode. In the absence of applied pressure, a gap remains between the foil and the surface of the back electrode between the ridge... | 07/08/1986 |
| 4597068 | Acoustic ranging system An acoustic transducer is connected to an electronically controllable time-dependent conductance so that energy may be rapidly applied to and extracted from the transducer and associated circuitry.... | 06/24/1986 |
| 4587670 | Hidden Markov model speech recognition arrangement A speech recognizer includes a plurality of stored constrained hidden Markov model reference templates and a set of stored signals representative of prescribed acoustic features of the said plurality of reference patterns. The Markov model template includ... | 05/06/1986 |
| 4570930 | System, method, and station interface arrangement for playing video game over telephone lines A system, method and station interface arrangement which permits video games to be played over a telephone network is disclosed. Communications delay between the games can be mitigated by transmitting local player position data to a remote game, the posit... | 02/18/1986 |
| 4561102 | Pitch detector for speech analysis Speech signal pitch detection uses the residual signal output of an LPC (linear prediction coder) filter. The residual signal (or its Hilbert transform) is divided into frames of 20 milliseconds, and each frame searched for signal peak periodicity by firs... | 12/24/1985 |
| 4555598 | Teleconferencing acoustic transducer A directional acoustic transducer includes a plurality of acoustic paths each having first and second ends. The second end of each path terminates in the atmosphere. An electroacoustic device is attached to an acoustic cavity and the acoustic path first e... | 11/26/1985 |
| 4554656 | Method and system for controlling the interconnecting of a plurality of local data networks This disclosure relates to the instant method and system for controlling the interconnecting of a plurality of local communications networks. A source station and a destination station may respectively be adapted to be coupled to at least one communicatio... | 11/19/1985 |
| 4551580 | Time-frequency scrambler Subband signals are formed each corresponding to a portion of an input signal frequency spectrum. The subband signals are partitioned into subband time segments. The subband time segment signals are permuted. The permuted signals are combined to form a sc... | 11/05/1985 |
| 4534024 | System and method for controlling a multiple access data communications system including both data packets and voice packets being communicated over a cable television system The instant communications system and method for controlling both digital voice traffic and digital data traffic includes a communications path, a source station and a destination station. The source and destination stations are respectively adapted to be... | 08/06/1985 |
| 4526043 | Conformable tactile sensor A force sensor includes an elastic dielectric, a first plurality of conductive elements on one side of the dielectric and a second plurality of conductive elements on the opposite side of the dielectric. First signals are applied to one plurality of condu... | 07/02/1985 |
| 4519094 | LPC Word recognizer utilizing energy features In a speech recognition arrangement, a speech pattern is recognized as one of a plurality of reference patterns for which acoustic feature signal templates are stored. Each template includes a time frame (e.g., 10 millisecond) sequence of spectral feature... | 05/21/1985 |
| 4485484 | Directable microphone system A microphone arrangement focuses on a prescribed volume in a large room such as an auditorium. The arrangement includes a plurality of directable beam microphone structures. Each beam is directed to a prescribed location. The signals produced in the micro... | 11/27/1984 |
| 4472832 | Digital speech coder An improved speech analysis and synthesis system wherein LPC parameters and a modified residual signal for excitation is transmitted: the excitation signal is the cross correlation of the residual signal and the LPC-recreated original signal.... | 09/18/1984 |
| 4454586 | Method and apparatus for generating speech pattern templates A system for generating speech pattern templates for use with either speech recognition or speech synthesis. Reference demisyllable templates are first generated from a reference first speaker using both manual and automatic analysis. The analysis for a s... | 06/12/1984 |
| 4449190 | Silence editing speech processor In an ADPCM system, improved detection of silence intervals in a speech signal is attained by detecting the level of the logarithm step-size signal (dn), which is representative of the energy of the speech samples. A speech pattern is converted... | 05/15/1984 |
| 4434327 | Electret transducer with variable actual air gap An electret transducer for producing a directional response, electret foil (92) and a backplate (94) with the actual air gap thickness therebetween varying in accordance with a predetermined relationship. The sensitivity of the electret transducer varies ... | 02/28/1984 |
