Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7978613 | Test signalling The degree of degradation imposed on signals transmitted over a communications link from a transmitter to a receiver is tested. A predetermined test signal is transmitted using spare capacity detected by a voice activity detector when no speech is to be transmitted ... | 07/12/2011 |
| 5742927 | Noise reduction apparatus using spectral subtraction or scaling and signal attenuation between formant regions A noise reduction apparatus and method for enhancing noisy speech signal which applies to the spectral component signals of a time-varying input signal either a spectral substraction process or a spectral scaling process followed by signal attenuation in ... | 04/21/1998 |
| 5572349 | Communications system A communications system having a line terminal(1), a plurality of customer terminals (2), and a passive optical network for supporting traffic between the line terminal and the customer terminals. The line terminal(I) has a terminal unit (BTS(n)) for rela... | 11/05/1996 |
| 5461497 | Photonic amplifier This invention relates to photonic amplifiers, e.g., fibre amplifiers, which are specially suitable for use in long distance telecommunications optical linkages. The amplifier includes an optical transmitter, which is adapted to provide to the output of t... | 10/24/1995 |
| 5200955 | Repeater for TDMA mobile radio A repeater for enhancing performance of a TDMA mobile radio system in poor signal areas has a bank of frequency agile, single channel amplifiers (13), and controller (14). The controller (14) scans the channel of the band and, upon identifying a channel c... | 04/06/1993 |
| 5181271 | Optical fiber storage system and method of installing optical fiber using same An optical fibre storage system comprising a container in which turns of fibre (4) are wound in a substantially helical formation, the diameter of the turns and container being such the turns of fibre are maintained in position by their natural resilience... | 01/19/1993 |
| 5177480 | Data communication having transmitter-controlled mode switching from compressed-to-transparent mode but local synchronous transmitter-controlled and receiver-controlled mode switching from transparent-to-compressed mode A method of processing data for transmission from a transmitter (T) to a receiver (R) both of which are switchable between a compression mode in which the data stream is encoded or decoded with a data compression algorithm and a transparent mode in which ... | 01/05/1993 |
| 5175779 | Method of forming an optical fibre coupler and a coupler so formed Six secondary optical fibres (20) are located about and parallel to a central optical fibre (21) by a capillary tube (22) to form a fibre bundle which is then formed into a fused, tapered coupler in which the tapering is stopped when the proportions of li... | 12/29/1992 |
| 5173899 | TDMA communications network of transmitting information between a central station and remote stations A passive, all optical communications network is provided in which a single optical source in a central station serves many outstations (e.g. telephones in customers' premises). Time division multiplexed optical signals from a laser source are transmitted... | 12/22/1992 |
| 5165662 | Fibre blowing brake Apparatus is described for inhibiting fluid flow and fibre package (3) motion in a fibre blowing operation. The apparatus comprises a fluid flow passageway (8) with a valve (9), and a bypass passageway (7) for the fibre package (3) in the vicinity of the ... | 11/24/1992 |
| 5153933 | Apparatus for generating a comb of optical teeth of different wavelengths Apparatus for generating of a comb having a large number optical teeth and comprises an optical loop (3) including an optical amplifier (5) a frequency shifter (4) and an optical filter (6). A signal from a laser (9) is partially coupled into the loop by ... | 10/06/1992 |
| 5153591 | Method and apparatus for encoding, decoding and transmitting data in compressed form Data compression and decompression utilizing, e.g., the Ziv-Lempel algorithm is simplified by utilizing a tree structure for the dictionary in which alternative symbols at a given position in a symbol sequence (a,b,c) are linked by linking pointers R of a... | 10/06/1992 |
| 5153764 | Control of optical systems A method and control system for controlling a signal from each outstation in a multiple access passive optical network including a central node and a plurality of outstations involves monitoring, at the exchange, the value of a parameter of a signal from ... | 10/06/1992 |
| 5142531 | Data communications network A network is arranged to generate circuits between source node (NS) and destination nodes (ND) by means of datagrams which are guided at each node over a path (D) which minimizes delay in establishing the circuit. Certain sub-destina... | 08/25/1992 |
| 5142532 | Communication system A bidirectional broadband and telephony network is controllable from an exchange or head end of the network. An optical fiber (16 ) carries the telephone services to customers' premises (30, 31) via passive optical splitters (17, 18). Telephony is provide... | 08/25/1992 |
| 5138691 | Gas seal A seal for a duct (7) containing a transmission line package (P) comprises a flexible member (2) disposed in a connector (1). The flexible member (2) has a waisted portion that collapses inwardly onto the transmission line package (P) to form a gas seal u... | 08/11/1992 |
| 5136576 | Transmission system A method of transmission between a first and a second station via a transmission link in at least part of which transmissions in two directions travel over a common path, transmissions by the second station occupying a bandwidth which is the same as or at... | 08/04/1992 |
| 5129021 | Optical star couplers An optical 1×N star coupler has a single mode input fibre (I) and N single mode output fibres (O1) forming an output fibre assembly. The output fibres (O) are tapered within a former (2) which holds each output fibre (O) so it is positioned su... | 07/07/1992 |
| 5121389 | Regenerative node for a communications network A regenerative node for use with scrambled, time domain multiplexed (TDM) data channels has a delay-lock receiver for locking onto a channel scrambled by its associated scramble sequence or a common scramble sequence; a transmitter slaved to the receiver ... | 06/09/1992 |
| 5115489 | Splice tray An optic fibre splice tray is provided with reels (3, 4) which can be moved towards and away from the outer walls (132, 133) of optic fibre compartments (1A, 1B) in order to hold the coiled optic fibres closely in position. This prevents kinks developing ... | 05/19/1992 |
| 5111153 | Non-linear optical amplification An optical amplifier having a saturable absorption region is operated below the lasing threshold for the device. Non-linear effects and bistability are observable at temperatures above room temperature. A selected input wavelength λi within th... | 05/05/1992 |
| 5107358 | Method and apparatus for transmitting information A method and apparatus for transmitting information comprises a signal generator (1) for continuously generating a pair of optical signals (f1, f2). These signals are similarly modulated in a modulator (5) with information to be transmitted and are combin... | 04/21/1992 |
| 5096301 | Fiber alignment device; method of making and using An optical fiber (1) has an endface (2) which has been coated with a metal oxide coating (5) such that the light guiding core region (4) of the endface (2) is at least partially bounded by the coating (5) while being uncoated itself. The core region (4) h... | 03/17/1992 |
| 5092161 | Duct testing A technique for detecting faults, blockages or holes, in a duct (6). A burst of compressed gas is injected into the duct and the decay of the pressure pulse monitored by a transducer at the gas burst launch end of the duct. A reference decay pressure that... | 03/03/1992 |
| 5086470 | Scrambling in digital communications network using a scrambled synchronization signal A passive, all optical communications network is provided in which a single optical source in a central station serves many outstations (e.g. telephones in customers' premises). Time division multiplexed optical signals from a laser source are transmitted... | 02/04/1992 |
| 5084890 | Pumped CW laser with low dopant level laser medium A 2.7Sg(m)m laser comprises a single mode fluoro-zirconate optical fibre doped with 0.086 mole % Er3+. C-W operation of the usually self-terminating lasing transition 4 I11/2 to 4 I13/2 is achieved by... | 01/28/1992 |
| 5083202 | Motion detector for video signals including a novel line comparison processing scheme A motion vector suitable for motion-compensated prediction in an inter-frame differential video coder is derived by comparison of each block of a current frame and with shifted corresponding region of a previous frame with the regions of the previous fram... | 01/21/1992 |
| 5080459 | Mounting assembly for optical equipment A mounting assembly (1) for optical equipment comprises a plurality of trays (2) detachably hinged together. Each tray (2) may be adapted to carry optical components as well as optical fibre splices and they can be hinged together into a stack in one of a... | 01/14/1992 |
| 5081695 | Bend restrictor for optical fibre cable A bend restrictor for an optical fibre cable comprises an elongate sleeve-like member (5) having an axial through bore for accommodating the cable (1a, 1b), and a coupling ring (6) for fixing the sleeve-like member to a rigid housing (4) from which the ca... | 01/14/1992 |
| 5065409 | FSK discriminator The outputs of two filter channels for accepting two keying frequencies are compared to produce the output. Each channel uses finite impulse response transversal filters; preferably with an impulse response of duration comparable with the symbol period of... | 11/12/1991 |
| 5065431 | Pattern recognition using stored n-tuple occurence frequencies A pattern recognizer uses the method of n-tuples applied to a matrix containing (e.g.) features derived from input speech. A template store records during a training sequence the frequencies of occurrence of combinations of bits with each n-tuple group. D... | 11/12/1991 |
| 5063595 | Optical communications network A passive, all optical communications network is provided in which a single optical source in a central station serves many outstations (e.g., telephones in customers' premises). Time division multiplexed optical signals from a laser source are transmitte... | 11/05/1991 |
| 5062152 | PCM signal coding A signal having a non-uniform probability density is processed for transmission in pulse code modulated form. The signal is quantized using conventional methods and the quantized signal is then coded using a non-sequential coding scheme in which binary co... | 10/29/1991 |
| 5061031 | Fluoride glass optical coupler component, coupler, and methods A coupler component is formed by embedding an optic fibre of fluoride glass in a slot in a substrate of a crown glass or flint glass which has a hardness similar to that of the fibre. The slot has a convex base and the slotted face of the substrate is gro... | 10/29/1991 |
| 5060258 | Call traffic control There are disclosed a method of call control (gapping) and a communications switching system in which such method is implemented, the system incorporating a call gapping arrangement for limiting the recurrence rate of successive call attempts for a partic... | 10/22/1991 |
| 5058986 | Non-linear inferferometer An optical fibre, loop interferometer (31) is formed from germania doped silica which exhibits Raman scattering at a threshold intensity to provide a transmitted optical signal from port (49) of coupler (35) whose intensity is a sigmoid function of the in... | 10/22/1991 |
| 5056608 | Boring ram In a self-propelled reversible boring ram, selection of forward/reverse boring modes is determined by the position of a control piston. A concentric supply pipe to a source of working fluid pressure connected to coaxial fluid inputs on the ram. Working fl... | 10/15/1991 |
| 5058124 | Semiconductor device and piezoelectric stack optical mounting assembly An external cavity laser assembly in which the laser chip is within a hermetically sealed package and the external cavity is outside the hermetic package. A collimating lens in a screw threaded mounting is disposed outside the hermetic package, the screw ... | 10/15/1991 |
| 5058165 | Speech excitation source coder with coded amplitudes multiplied by factors dependent on pulse position Input speech is processed to derive LPC (Linear Predictive Coding) filter parameters and parameters of a multipulse excitation which are quantized prior to transmission along with the filter parameters to a decoder where the excitation is generated and dr... | 10/15/1991 |
| 5042943 | Endface assessment Apparatus for measuring the endface angle of a cleaved optical fibre (1) includes a light source (3) for injecting optical energy into that end (1a) of the optical fibre (1) opposite to that whose endface angle is to be measured. Means are provided for ta... | 08/27/1991 |
