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| Patent # | Description |
|---|---|
| US-4,672,638 |
Multipath canceller for cancelling a distortion caused to a radio
frequency pulse by multipath transmission For use in cancelling a distortion caused by multipath transmission to an original radio frequency pulse of an original pulse shape, a multipath canceller... |
| US-4,672,637 |
Adaptive bit synchronizer An adaptive bit synchronizer is operable to extract digital data and its associated clock from a transmitted digital signal, and includes a tunable matched... |
| US-4,672,636 |
AFC circuit for direct modulation FM data receivers An FM data receiver of the offset type, in which the local oscillator frequency is located between the two frequency-shift-keyed signalling frequencies. To... |
| US-4,672,635 |
Circuit arrangement for noise suppression in binary data signals in a
digital transmission system For suppressing faults in binary data signals, two circuit branches respectively allocated to one of the polarities of the data signals and each comprising an... |
| US-4,672,634 |
Arrangement for generating an angle-modulated carrier signal of constant
amplitude in response to data signals An arrangement for generating an analog angle-modulated carrier signal of a substantially constant amplitude in response to data signals having a symbol rate 1/T... |
| US-4,672,633 |
Data transmission system A data transmission system comprising a transversal smearing filter at the transmitting end and a transversal desmearing filter at the receiving end. To simplify... |
| US-4,672,632 |
Optimized communications system and method employing channel synthesis
and phase lock detection An optimized communications system and method, particularly for digital signals, employs overall channel synthesis for providing a desired overall time response.... |
| US-4,672,631 |
Radio receiver with variable phase shift correction A radio receiver gradually changes the phase of a regenerated clock when an abnormal receiving condition is detected. Since clock phase changes gradually, an... |
| US-4,672,630 |
Training method of data receiving equipment Data receiving equipment is trained by training signal of optimum length through the steps that the sending equipment sends data signal after sending the... |
| US-4,672,629 |
Receiver for bandspread signals A receiver for bandspread signals having a pseudo-random code stored in the receiver for synchronization with a pseudo-random code (PRC) of a received and... |
| US-4,672,628 |
Assembly for the automatic cooling water connection to water-cooled
combination electrodes for electric arc... An automatic facility for the connection of combination arc electrodes to a cooling water circuit, comprising a cooling water coupling device (17) mounted on the... |
| US-4,672,627 |
Electrode heater A method and apparatus for heating the portion of an electrode protruding from a glass melting furnace is disclosed. One embodiment of the invention describes an... |
| US-4,672,626 |
Laser oscillator mirror adjustment apparatus Adjustment of the rear or output mirror of a laser oscillator is performed by pivoting a laser mirror holder about three pivot points connecting the laser mirror... |
| US-4,672,625 |
Methods and apparatus for maximizing the power output of a gas laser The power output of a gas laser is maximized by (1) suppressing high order transverse modes, (2) broadening the gain curve to increase the number of axial modes... |
| US-4,672,624 |
Cathode-block construction for long life lasers A gas discharge device includes a block having one or more gas filled cavities or passageways along which the laser beams may propagate. Coupled to one of these... |
| US-4,672,623 |
Cathode construction for a laser Disclosed is a cathode for a ring laser comprising a housing composed of substantially a nickel-iron composition having an inner cavity with a coating of a low... |
| US-4,672,622 |
Gas transport laser apparatus with axial gas flow In a gas transport laser with axial gas flow, a radial blower is provided for the gas circulation on the axis of which a laser resonator has been arranged. The... |
| US-4,672,621 |
Laser resonator having an improved gas-introducing portion In a laser resonator having a gas-introducing portion at one end of a laser tube, where the gas introducing portion comprises an inner tube communicating with... |
| US-4,672,620 |
Fast axial flow carbon dioxide laser A fast axial flow carbon dioxide laser has a laser head arranged to provide multiple folding of the laser beam into two, four or more linear passes. The... |
| US-4,672,619 |
Color centers for tunable lasers in the near infrared region Stable color centers capable of laser emission in the near infrared region of the optical spectrum are provided in alkali halide host crystals containing... |
| US-4,672,618 |
Laser stabilization servo system A method and means for stabilizing the difference in frequencies between the frequency components of a two frequency laser beam influenced by Zeeman effect... |
| US-4,672,617 |
Lasers A multiple wavelength operating laser (10) having a pump cavity or enclosure (14) surrounded by an optical pumping arrangement (17) comprises a plurality of... |
| US-4,672,616 |
Single-mode laser The invention relates to a single-mode laser provided with a folded optical resonator, comprising a laser rod 1, resonator mirrors 3A, 3B deposited by ... |
| US-4,672,615 |
Ion and electron beam steering and focussing system An ion or electron beam is steered or focussed by a circular magnetic field produced by passing a large electrical current through a straight conducting wire,... |
| US-4,672,614 |
Semiconductor memory device with parallel addressing and data-correcting
functions An improved error-correction type semiconductor memory device operates at high speed. The memory is provided with a pair of row address buffers which can operate... |
| US-4,672,613 |
System for transferring digital data between a host device and a
recording medium In a system for transferring data between a host device and a target recording medium, a buffer interface control unit includes a host direct memory access (DMA)... |
| US-4,672,612 |
Error correction system in a teletext system An error correction system for a difference set cyclic (272, 190) code with 190 data bits and 82 test bits in a packet which is transmitted on a vertical... |
| US-4,672,611 |
Serial transmission line monitoring device A serial transmission line monitoring device is disclosed, in which data flowing along a serial transmission line is received and analyzed by setting a protocol... |
| US-4,672,610 |
Built in self test input generator for programmable logic arrays A built in self test input generator (BISTIG) for programmable logic arrays (PLAs) providing exhaustive fault coverage, but requiring additional space of only 8... |
| US-4,672,609 |
Memory system with operation error detection A memory system for a computer detects data errors, address errors and operation errors to increase the reliability of data stored in the memory system. Address... |
| US-4,672,608 |
Multiple access communications system A method by which substations in a multiple access communication system, such as a mobile radio system, may access the base station. Access is determined by the... |
| US-4,672,607 |
Local area network communication system A local area network communication system in which a repeating installation sets a ring number of a ring from which a communication frame was taken out as a... |
| US-4,672,606 |
Method, station and system for the transmission of messages in the form
of data packets Data packets are transmitted over a time-division multiplex system with CSMA-CD connecting multiple stations and having a signaling channel and message-switch... |
| US-4,672,605 |
Data and voice communications system A high speed and relatively error free communications system is disclosed which enables the high speed transmission of data at a 19.2 kilobit per second rate.... |
| US-4,672,604 |
Time slot polling arrangement for multiple stage time division switch A multi-stage time division switch interconnects a plurality of processors that individually communicate over one or more channels at various signalling rates.... |
| US-4,672,603 |
Combined analog/digital CCIS data transmitter/receiver circuit Common channel interoffice data transfer circuitry is shown for transmitting and receiving both analog and digital CCIS data. This data transfer circuitry is a... |
| US-4,672,602 |
Control and routing system A telemetry system connects with a telephone system for communication of data via subscriber telephone lines to a provider of data services. Connection of... |
| US-4,672,601 |
Duplex interconnect/dispatch trunked radio system A dispatch trunked radio system which provides duplex or simplex telephone interconnect communications to subscriber units is described. The system allows duplex... |
| US-4,672,600 |
Optical disc having protective cover An optical disc assembly has an optical disc and a protective cover. The optical disc has a surface adapted to have optically recorded thereon data consisting of... |
| US-4,672,599 |
Optical disc unit and method and apparatus for writing and/or reading
information thereon An improved method of optically writing and/or reading high density information involves: (1) predeterminedly positioning a flat, uniformly thick, flexible,... |
| US-4,672,598 |
Disc loading mechanism In an apparatus for recording and/or reproducing signals on an information carrier comprising a loading mechanism for loading the information carrier (21, 85), a... |
| US-4,672,597 |
Clock signal reproducing circuit for a player reproducing information of
a disc A clock signal reproducing circuit for a player reproducing information of a disc reproduces a clock signal from a signal reproduced from a disc via a pickup... |
| US-4,672,596 |
Level controlled readout system for formatted record recorded on an
optical disc The invention relates to the reshaping of a read signal in such a manner as to compensate for possible distortions, in particular of its cyclic ratio. During a... |
| US-4,672,595 |
System for controlling rotary drive of recorded disk player A system for controlling the rotary drive of a disk player employing only inexpensive and simple circuits. A position pulse signal is generated of a frequency... |
| US-4,672,594 |
Magneto-optical recording system utilizing a leakage magnetic field of
focusing actuator In a magneto-optical file memory wherein a storage medium having a vertical magnetic film is irradiated with a laser beam to reverse a magnetization direction of... |
| US-4,672,593 |
Optical head with improved extinction ratio for magneto-optical memory An optical head for a magneto-optical memory in which the major axis (the phase advance axis or phase lag axis) of optical anisotropy of a lens focusing a... |
| US-4,672,592 |
Shaded transducer A cylindrical transducer for use as a low frequency hydrophone and having inner and outer electrodes at least one of which is deposited in a certain ... |
| US-4,672,591 |
Ultrasonic transducer An ultrasonic transducer comprises a support body, a piezoelectric layer of a material with a relatively high dielectric constant and high acoustic impedance, a... |
| US-4,672,590 |
Talking depth sounder Apparatus is provided for adapting an analog depth sounder for the calling out of the depth at regular time intervals. In one embodiment, a self-contained... |
| US-4,672,589 |
Underwater detection system An underwater detection system which has a transmitting and receiving unit for radiating an ultrasonic wave pulse into the water within a narrow sector and... |
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