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| Patent # | Description |
|---|---|
| US-4,893,354 |
System and method for self-compensating fiber-optic data transmission at
temperatures up to 200 degrees C. Data logging at temperatures up to 200.degree. C. by optical signals sent via a "wet" optical fiber is achieved by using as a light source device an LED having a... |
| US-4,893,353 |
Optical frequency synthesizer/sweeper An optical frequency synthesizer and/or sweeper, whereby a coherent optical output light is obtained by using a wavelength stabilized laser and an optical phase... |
| US-4,893,352 |
Optical transmitter of modulated signals Orthogonal optical signals on a common waveguide are obtained by power splitting a light signal into a split waveguide, modulating at least one of the split... |
| US-4,893,351 |
Communication receiver having a remote alert device An apparatus for generating a remote alert signal in a communication receiver, the apparatus includes a remote alerting device, a latching receptacle enclosed... |
| US-4,893,350 |
Interference cancellation system An interference cancellation system has a combiner which removes an undesired component from a main signal including both a desired signal and an undesired... |
| US-4,893,349 |
FM communication system with improved response to rayleigh-faded
received signals An improved FM communication system is disclosed in which noise bursts and pops in the audio output of the receiver, due to weak and Rayleigh-faded signals, are... |
| US-4,893,348 |
Power source control device in car telephone mobile station system A power source control device in a car telephone mobile station system where an abnormal state detecting means installed within a body CPU supervises signals... |
| US-4,893,347 |
FM communication system with improved response to Rayleigh-faded
companded signals An improved FM companding communication system is disclosed in which noise bursts and pops in the audio output of the receiver, due to weak and Rayleigh-faded... |
| US-4,893,346 |
Apparatus for automatically inspecting objects and identifying or
recognizing known and unknown portions... Apparatus and method for automatically inspecting objects and identifying or recognizing known and unknown portions thereof, including defects and the like,... |
| US-4,893,345 |
Method for detecting/processing image information In a photographic printing system, it is necessary to measure the density of an original film to determine its exposure value and to precisely control... |
| US-4,893,344 |
Headset having a post auricle mount and arranged to be worn on a
person's outer ear A headset (1) with sound receiving microphone (6) and sound reproducing transducer (3) is arranged to be worn on a person's outer ear (2). For this purpose, the... |
| US-4,893,343 |
Dual diverging manifold loudspeaker system A dual diverging manifold loudspeaker system includes a generally cubically-shaped outer horn housing and an inner dome-like cap member for encapsulating... |
| US-4,893,342 |
Head diffraction compensated stereo system A stereo audio processing system for a stereo audio signal processing reproduction that provides improved source imaging and simulation of desired listening... |
| US-4,893,341 |
Digital receiver operating at sub-nyquist sampling rate A digital receiver samples data from an amplitude modulated subcarrier at a rate less than twice the subcarrier's maximum frequency by sampling at known phase... |
| US-4,893,340 |
Multijunction unit apparatus for use in a digital network Disclosed is an adaptive multijunction unit apparatus for multiplexing data streams between a master computer and a plurality of slave computers coupled through... |
| US-4,893,339 |
Secure communication system Disclosed is a synchronous secure communication system wherein an information signal is encrypted in an encryption means. The encrypted signal is compressed to... |
| US-4,893,338 |
System for conveying information for the reliable authentification of a
plurality of documents A system for conveying information for the reliable authentication of a plurality of documents includes a device for solving a set of polynomial equations to... |
| US-4,893,337 |
Circuit arrangement for a digital telephone station A circuit arrangement is provided for digital telephone stations in a digital private branch exchange, whereby control information are constantly exchanged via a... |
| US-4,893,336 |
Call forwarding arrangement An improved call forwarding arrangement where forwarded calls receive different terminating treatment from non-forwarded calls, for example providing a readily... |
| US-4,893,335 |
Remote access telephone control system A telephone control system connects to the telephone line from a telephone exchange. The control system includes a detector for detecting signals on the line, a... |
| US-4,893,334 |
Intercommunication system for telephones An intercom system for use with a plurality of telephones on a single extension includes a single master station and a plurality of slave stations. The master... |
| US-4,893,333 |
Interactive facsimile system and method of information retrieval This invention allows unmodified CCITT Group 3 and 4 facsimile transceivers to interactively select and retrieve facsimile pages from a shared facsimile data... |
| US-4,893,332 |
Low-powered remote sensor A low-powered remote sensor is achieved by capacitively isolating a long duration perpetual timer which is powered by removing inductively coupled AC power from... |
| US-4,893,331 |
System allowing selective connection of various types of external
apparatuses to telephone set A system allowing selective connection of various types of external apparatuses to a telephone set, which system comprises a plurality of switching circuits... |
| US-4,893,330 |
Method and apparatus for restricting credit card communication calls A method and an apparatus are disclosed to enable a public switching network to limit the geographical calling area of calls charged to a credit card. When a... |
| US-4,893,329 |
Call deferral system for telephones A telephone call deferral system which allows incoming telephone calls to be deferred for a user selected period or until a user selected time. During the defer... |
| US-4,893,328 |
Automated telephone operator overflow device An automated telephone answering device is provided in a telephone answering system with a human operator, for automatic routing of incoming calls when the human... |
| US-4,893,327 |
Colocated cellular radiotelephone systems An existing cellular system (X-system 102) is interconnected with another cellular system (M-system (101) via inter-office trunks (150) to add additional... |
| US-4,893,326 |
Video-telephone communications system An auxiliary unit is used in conjunction with a personal computer based work station for interconnecting the work station to an audio-visual communications... |
| US-4,893,325 |
Integrated public safety answering point system A telephone call distribution system for handling a special type call, the call containing at least automatic number identification (ANI) data, having at least... |
| US-4,893,324 |
Portable fire detection system A portable fire detector and alarm system includes a rechargeable battery power supply and circuitry that monitors a string of up to forty smoke detectors and... |
| US-4,893,323 |
Combination portable x-ray table and stretcher A combination portable x-ray table and stretcher immobilizes an emergency patient from time of pick-up through x-ray examination without further movement or... |
| US-4,893,322 |
Film changer Disclosed is a film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film are fed sequentially at high speed into... |
| US-4,893,321 |
X-radiator, particularly for producing intra-oral dental exposures An x-radiator, particularly useful for intra-oral dental exposures, includes a common housing having a barrel at one end, a high-voltage generator having a... |
| US-4,893,320 |
Apparatus for counting particles attached to surfaces of a solid An apparatus for counting particles attached to surfaces of a solid is disclosed which includes an external tank, an internal tank disposed within the external... |
| US-4,893,319 |
Clock regeneration circuit employing digital phase locked loop A clock regeneration circuit employing a digital phase locked loop for locking a video data signal to both a synchronization signal and a clock signal includes... |
| US-4,893,318 |
Method for referencing multiple data processors to a common time
reference A master (virtual) clock is situated at a central data gathering station, and slave (physical) clocks are situated at one or more (functionally or spatially)... |
| US-4,893,317 |
Digital signals and frequency correction in a digital wireless system A digital wireless subscriber telephone unit for wireless connection with a base station. The subscriber unit has a baseband processor which is coupled to... |
| US-4,893,316 |
Digital radio frequency receiver A digital radio receiver is described. The digital receiver of the present invention contemplates a digital radio receiver which operates on a received analog... |
| US-4,893,315 |
Calorimetry system A calorimetry system for measurement of the heating value of coal having a combustor 24 and a mixing unit 30 wherein heat from combustion gases is transferred to... |
| US-4,893,314 |
Protected internal laser mirror adjusting apparatus A hollow mirror seat, insertable into the end of a laser tube, has a first portion having a first length and a first outside diameter close to the inside... |
| US-4,893,313 |
Semiconductor laser device which has a double-hetero structure having an
optimal layer thickness In a semiconductor laser device, for emitting a laser beam having a wavelength .lambda., an n-type In.sub.0.5 (Ga.sub.1-x Al.sub.x)P first cladding layer is... |
| US-4,893,312 |
Compact, real time tape drive system A nine track digital tape system operating in accordance with a feedback shift register redundancy scheme, includes in both the encoding and writing section and... |
| US-4,893,311 |
CMOS implementation of a built-in self test input generator (BISTIG) A CMOS implementation of a Built In Self Test Input Generator (BISTIG) for testing embedded PLA structures. The BISTIG tests for all stuck at faults, cross-point... |
| US-4,893,310 |
Digital key telephone system A key telephone system includes a plurality of ports being linked by port associated bidirectional communication channels which are synchronously switched by... |
| US-4,893,309 |
Digital interface between at least two subscriber line interface
circuits and a processing unit A digital interface between at least two subscriber line interface circuits and a processing unit is described. The interface is configured in the form of a... |
| US-4,893,308 |
Method and apparatus for time companding a digital voice signal Disclosed is a method and apparatus for time companding a digital voice signal wherein, single bits are periodically removed from the digital voice signal, which... |
| US-4,893,307 |
Method and apparatus for linking SNA terminals to an SNA host over a
packet switched communications network The invention disclosed herein provides the basic operation capabilities of SNA data communications for host-to-remote terminal sessions across a packet switched... |
| US-4,893,306 |
Method and apparatus for multiplexing circuit and packet traffic A data transmission technique referred to herein as Dynamic Time Division Multiplexing (DTDM) is disclosed along with a set of multiplexers and demultiplexers... |
| US-4,893,305 |
Inband dynamic port allocation A multi-port (multiplexed) modem for implementing automatic reconfiguration of the ports so that transmission bandwidth can be optimized. The modem utilizes a... |
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