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| Patent # | Description |
|---|---|
| US-4,839,923 |
Method and apparatus for time companding an analog signal A method and apparatus to compand an analog message to afford a two-to-one improvement in spectral efficiency, while contemporaneously minimizing distortion in... |
| US-4,839,922 |
CATV scrambling and descrambling method A CATV scrambling and descrambling method in which the horizontal and vertical synchronizing signals of a composite television video signal are compressed in... |
| US-4,839,921 |
Telephone station comprising an optical display device A telephone station including an optical display device fashioned as a display is provided. The display device is quickly and simply attachable by being... |
| US-4,839,920 |
Method for determining telephone dial pulse parameters independently of
subscriber line length A method is disclosed for measuring telephone dial pulse parameters independent of telephone subscriber line length. To avoid distortions resulting from varying... |
| US-4,839,919 |
Telephone and demodulator A telephone comprising a handset and an apparatus for receiving the handset provided with an alpha-numerical key-board, an alpha-numeral display, a programmed... |
| US-4,839,918 |
Switching system between cordless telephone and ordinary telephone A system for enabling switching between a cordless telephone, including a fixed unit and a portable unit, and an ordinary telephone which may be connected to the... |
| US-4,839,917 |
Universal line status monitoring and response system A system is disclosed for monitoring telephone lines by bridging across each line between a telephone central office or private branch exchange (PBX) and a... |
| US-4,839,916 |
Telephone toll integrity checking system Apparatus for automatically obtaining data useful to determine accuracy of telephone toll message accounting equipment and procedures is disclosed. The apparatus... |
| US-4,839,915 |
Inverter type X-ray apparatus In an inverter type X-ray apparatus comprising an inverter including a plurality of switching elements operated alternately to generate an AC voltage having a... |
| US-4,839,914 |
Portable tire X-ray apparatus and method A portable tire X-ray apparatus includes a frame having horizontal rollers supporting a tire vertically and a motor connected to at least one of the rollers to... |
| US-4,839,913 |
Shadowgraph imaging using scatter and fluorescence Information is derived from a selected fluorescent radiation line produced when an object is illuminated by a flying spot scanner. The illuminating radiation has... |
| US-4,839,912 |
Switching circuit arrangement for monitoring a binary signal A circuit arrangement for monitoring a binary signal having at least one level shift within a characteristic waiting time, such circuit including two flip-flops... |
| US-4,839,911 |
Charger transfer shift register with voltage sensing device using a
floating-potential diode The invention pertains to a charge transfer shift register provided with a device for voltage sensing using a floating-potential diode. Towards that end of the... |
| US-4,839,910 |
Counter with glitchless terminal count indication A glitchless terminal count indication digital counter having a clock signal as an input thereto is disclosed and comprises a state logic means comprised of a... |
| US-4,839,909 |
Register access decade counting technique An electronic counter such as for use in the odometer of a motor vehicle is provided comprising an array (10) of m rows and n columns of single flip-flop data... |
| US-4,839,908 |
Transmission control apparatus A data transmission control apparatus is provided in which received data are considered invalid for a predetermined period after the start of data reception is... |
| US-4,839,907 |
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... |
| US-4,839,906 |
Processor based linked compressor-expander telecommunications system A digital linked compressor-expander telecommunications system (Lincompex), is implemented using a general purpose digital signal processor wherein the... |
| US-4,839,905 |
Multirate automatic equalizer An automatic amplifying and equalizing circuit for bipolar data signals has first and second voltage controlled amplifiers controlled by the output of a peak... |
| US-4,839,904 |
Apparatus for the melting of metals An apparatus for melting metals in a vacuum chamber has a weir box (1), electron beam generators disposed above the weir box, and a crucible for the withdrawal... |
| US-4,839,903 |
Ring laser gyroscopes Triaxial ring laser gyroscopes have three interconnecting cavities which provide many paths along which discharge can be initiated, and consequently it has been... |
| US-4,839,902 |
Laser with controlled geometry fluorescent converter The efficiency of an optically pumped solid state laser is substantially improved with a controlled geometry fluorescent converter between the pump light source... |
| US-4,839,901 |
Semiconductor laser with constant differential quantum efficiency or
constant optical power output A semiconductor laser is disclosed whose front or rear surface is provided with a multilayer dielectric and/or reflective coating in such a way that either a... |
| US-4,839,900 |
Buried type semiconductor laser device A buried type semiconductor laser device comprising a multi-layered epitaxial growth crystal including a striped laser-oscillation operating area on a... |
| US-4,839,899 |
Wavelength tuning of multiple quantum well (MQW) heterostructure lasers The thermalization process is effectively slowed down by reducing the tunneling or communication probability between adjacent quantum wells of a MQW... |
| US-4,839,898 |
Optical resonating device An optical fiber laser comprises an optical resonant cavity defined by an optical fiber (1). First and second reflectors (8, 13; 14, 19) are optically coupled... |
| US-4,839,897 |
Fault detecting system for ADPCM codec A fault detecting system is provided for detecting fault of an ADPCM codec for transcoding an input signal between an ADPCM and a PCM to produce a first code... |
| US-4,839,896 |
Fast remainder decoding for a Reed-Solomon code Apparatus and methods are disclosed for providing fast decoding of Reed-Solomon and related codes. Cases of one and two data symbol errors are decoded directly... |
| US-4,839,895 |
Early failure detection system for multiprocessor system An early failure detection system for a multiprocessor system has a plurality of central processing units. When an idling central processing unit is detected by... |
| US-4,839,894 |
Contiguous channel multiplexer/demultiplexer A multiplexer/demultiplexer for combining/separating a large number of contiguous frequency channels in microwave bands while incurring low insertion loss. The... |
| US-4,839,893 |
Telecommunications FIFO A telecommunications FIFO provides an interface between two serial data transmission channels which have independent clocks and which can operate according to... |
| US-4,839,892 |
Concentrator system capable of completing emergency calls under
congested traffic In a radio concentrator system formed by a central station and remote stations, demand-assigned data channels are constantly monitored to detect when they are... |
| US-4,839,891 |
Method for controlling data flow A data packet transmitted from a source data terminal is received by a destination data terminal and stored into a receive buffer from which it is withdrawn at a... |
| US-4,839,890 |
Data bit synchronizer A data bit synchronizer particularly adapted for use with a multiplexing character processor of the type that multiplexes data characters to and from a plurality... |
| US-4,839,889 |
Digital filter tree The invention relates to a digital filter tree composed of a plurality of digital filter banks arranged in a tree structure one behind the other to branch out in... |
| US-4,839,888 |
Digital time-division multiplex switch-based telephone subscriber
connection system Telephone subscriber connection system based on a ditital time-division switch. System of connecting telephone subscribers whose devices (2) are connected to... |
| US-4,839,887 |
Node apparatus for communication network having multi-conjunction
architecture A node apparatus is used in a communication network having a multi-conjunction architecture. The communication network has a plurality of transmission paths each... |
| US-4,839,886 |
Star configured local area network having priority allocation An electronic device for a local area network of electronic apparatuses is characterized by a timer operatively associated with each apparatus, each timer being... |
| US-4,839,885 |
Star configured local area network An electronic device for a local area network of electronic apparatuses is characterized by a timer operatively associated with each apparatus, each timer being... |
| US-4,839,884 |
Multiple wavelength optical source and multiplexed light communication
system An external-cavity laser includes low-level, broad spectrum light sources and plural light amplifiers. The external cavity includes a common partially reflecting... |
| US-4,839,883 |
Optical information recording medium There is provided a rewritable tri-layer optical information recording medium of the phase change type having a high sensitivity. In this medium, a reflective... |
| US-4,839,882 |
Record carrier with an optically readable trackwise-arranged information
structure A record carrier is described with an optically readable trackwise-arranged information structure, and an apparatus for reading said carrier. The distances... |
| US-4,839,881 |
Pickup transport device for optical disc apparatus To accurately move a pickup 31 along a radial line of an optical disc in an optical disc apparatus for recording signals on both sides of the disc or reproducing... |
| US-4,839,880 |
Apparatus for loading record discs of different diameters in disc players A record disc player apparatus of the type having a front loading drawer incorporates a centering mechanism for centering record discs of different diameters. At... |
| US-4,839,879 |
Method for recording data on non-defective sectors of an optical disk An optical disc is subdivided into a plurality of concentric tracks. The tracks are further subdivided into a plurality of sectors. A method for recording data... |
| US-4,839,878 |
Apparatus for controlling the writing of data in disk sectors A disk control device for controlling the positioning of an optical disk having address sections in each of which a plurality of identical track addresses and a... |
| US-4,839,877 |
Rotational position controls for optical disk players using removable
disks A record disk player removably receives for rotation a record disk having an index mark as the sole circumferential position indicator. A spindle in the player... |
| US-4,839,876 |
Track seeking using a track following loop An optical disk recorder includes a position servo control loop for causing a beam of radiation to faithfully follow a track on the disk, jump from a current... |
| US-4,839,875 |
Technique for automatic tracking of cassette rentals and managing of
information related thereto A rental control system for controlling the rent and return of cassettes is disclosed. Each cassette internally contains an article such as a recorded ... |
| US-4,839,874 |
Electronic watch with moving member An analog type electronic watch having a step motor to drive hands has a movement indicator other than hands. The movement indicator has a magnet member and is... |
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