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| Patent # | Description |
|---|---|
| US-5,781,613 |
Telephone answering device and method for screening incoming telephone
calls with blocked calling party... A telephone answering device includes a line interface for connecting the telephone answering device to a telephone line and a ring detector, coupled to the... |
| US-5,781,612 |
Radio terminal interfaces for voice and data telecommunications, and
methods for their operation A radio terminal interface includes a signal processor and a controller. The signal processor has a TDMA mode of operation and an AMPS mode of operation. The... |
| US-5,781,611 |
Method and apparatus for monitoring status of speech connection between
central office lines A method and apparatus for monitoring the status of a speech connection between central office lines in a private exchange system may be constructed with a... |
| US-5,781,610 |
Portable X-ray device A novel x-ray image receptor holder physically links to the collimated tube of a lightweight, portable and preferably hand-held X-ray generator for use in... |
| US-5,781,609 |
Drive device for a rotary anode of an x-ray tube The invention relates to a drive device for a rotary anode of an X-ray tube having a drive motor with a stator (10) and a rotor (15; 21) which drives the rotary... |
| US-5,781,608 |
X-ray exposure system An x-ray exposure system that reduces the time required to evacuate an internal chamber of a vacuum vessel, uses a low-power laser to produce the plasma that... |
| US-5,781,607 |
Membrane mask structure, fabrication and use A membrane mask structure for lithography using a radiation source and steps for fabricating and using the inventive membrane mask structure. The membrane mask... |
| US-5,781,606 |
X-ray tomography system with substantially continuous radiation
detection zone In an x-ray scanning system having an x-ray source and an x-ray detector assembly, including a plurality of x-ray detector crystals grouped in substantially... |
| US-5,781,605 |
Image reconstruction method and arithmetic unit for a computed
tomography apparatus In a computed tomography apparatus with a volume reconstruction by a three-dimensional gridding algorithm an arithmetic unit and method for operating same are... |
| US-5,781,604 |
Initial core and fuel assembly In an initial core of the present invention, a low enrichment fuel assembly having the lowest average enrichment factor and three fuel assemblies having a higher... |
| US-5,781,603 |
Method and apparatus for repair of nuclear reactor shroud In order to support a shroud against bending, shear, stress and torsion, straps which are preferably formed of the same material as the shroud, are placed in... |
| US-5,781,602 |
PGNAA system for non-invasively inspecting RPV weld metal in situ, to
determine the presence and amount of... Prompt Gamma Neuteon Activation Analysis (PGNAA) is employed to determined in situ the content of nickel, copper, or other embrittlement-enhancing elements... |
| US-5,781,600 |
Frequency synthesizer A frequency synthesizer for producing a tunable frequency output signal. The synthesizer includes a tunable frequency oscillator having a tunable output signal... |
| US-5,781,599 |
Packet receiving device An apparatus for receiving and decoding a packet of a multiplexed bit stream whose data is coded in a predetermined format, includes a temporary storage memory... |
| US-5,781,598 |
System and method of asynchronous data transfer through a plurality of
modems A system and method are disclosed for asynchronously transmitting data from an originating system to a receiving system over first and second channels. The... |
| US-5,781,597 |
Synchronous digital transmission system having justification circuit
that counts frame bytes, calculates... A synchronous digital transmission system has network nodes each operating at a respective fixed internal clock rate, each with a justification device for... |
| US-5,781,596 |
Desynchronising video information from synchronous network to a
plesiochronous tributary with constant rate of... The leak rate of the primary buffer in a desynchroniser buffer at the exit from a synchronous transport network to a plesiochronous tributary is controlled in a... |
| US-5,781,595 |
Voice transmitting apparatus and voice receiving apparatus using unique
word patterns A voice transmitting apparatus and a voice receiving apparatus using voice activation techniques. The voice transmitting apparatus is provided with a UW2 burst... |
| US-5,781,594 |
Data transfer circuit for use with a base unit or a handset of a
telephone system A data transfer circuit for use with a base unit or a handset of a telephone system includes a switch circuit and a shift register. The switch circuit selects... |
| US-5,781,593 |
Methods and apparatus for vocoder synchronization in mobile
communication network In a communication network, a synchronized over-the-air (OTA) time slot of a base station's polling loop is acquired by a remote station seeking to initiate... |
| US-5,781,592 |
Selective diversity system A selective diversity apparatus in which a predetection diversity system is used and branches can be switched without generating a signal error, etc., even at... |
| US-5,781,591 |
Digital method for detecting pulses of short duration and arrangement
for implementing the method A digital method for detecting pulses of short duration. During this process, a threshold value is formed using FIR filters with the assistance of a detection... |
| US-5,781,590 |
Partial response maximum likelihood (PRML) signal processing apparatus A PRML (Partial Response Maximum Likelihood) signal processing apparatus for both MP (Mark Position) recorded medium and ME (Mark Edge) recorded medium. The... |
| US-5,781,589 |
Digital slope detector and method A slope detector and method of detecting a slope of the passband signal spectrum in a quadrature amplitude modulation (QAM) digital radio system. The detector... |
| US-5,781,588 |
FSK signal receiver An FSK signal receiver includes an amplifier which amplifies a first FSK signal at an adjustable gain. A frequency converter converts an output signal from the... |
| US-5,781,587 |
Clock extraction circuit A clock extraction circuit for retiming a ternary data stream derives first and second binary streams corresponding respectively to the positive and negative... |
| US-5,781,586 |
Method and apparatus for encoding the information, method and apparatus
for decoding the information and... A method and apparatus for encoding an input signal in which the input signal is transformed into frequency components which are encoded by quantization from one... |
| US-5,781,585 |
Arrangement for monitoring a two-wire bus line An arrangement for monitoring a two-wire bus line for serial transmission of digital data includes a bus subscriber receiving circuit coupled to the two-wire... |
| US-5,781,584 |
Code acquisition and tracking circuit using switched matched filter and
sliding correlators A filter circuit largely reducing electric power consumption compared with a conventional one, as well as realizing the initial acquisition in high enough speed.... |
| US-5,781,583 |
Method and system for communication over multiple channels in a spread
spectrum communication system A method for transmitting a communication signal (20) having a data rate over a plurality of spread spectrum traffic channels includes determining a first number... |
| US-5,781,582 |
Frequency agile transceiver with multiple frequency synthesizers per
transceiver A base station communicates with a plurality of mobile stations over a cellular network. In one embodiment, the base station includes a receiver having a... |
| US-5,781,581 |
Induction heating and melting apparatus with superconductive coil and
removable crucible An induction heating apparatus having a refractory vessel for holding a quantity of material to be heated by the apparatus. The vessel being surrounded by, but... |
| US-5,781,580 |
Diode pumping module The invention provides a diode pumping module for a laser system, including a laser rod and a diode light source for excitation of the laser rod, the diode... |
| US-5,781,579 |
Microwave excited gas laser apparatus A microwave excited gas laser apparatus includes a single unit having at least first, second, third, and fourth waveguides. The first and second waveguides meet... |
| US-5,781,578 |
Optical semiconductor device An optical semiconductor device includes a semiconductor laser diode having a first electrode for receiving a current for driving the laser diode, and a... |
| US-5,781,577 |
Semiconductor laser A semiconductor laser includes a first conductivity type semiconductor substrate, a first conductivity type lower cladding layer, a quantum well structure active... |
| US-5,781,576 |
Semiconductor laser device and optical disk drive An optical disk drive has an aberration detector and an aberration correction circuit. A semiconductor laser device made of semiconductor crystals constituting a... |
| US-5,781,575 |
Surface emitting laser device with a vertical cavity A surface emitting laser device with at least two active regions in one and the same optical, vertical cavity wherein the active regions are electrically... |
| US-5,781,574 |
Liquid circulation system for cooling a laser head A liquid circulation system for cooling a laser head is disclosed. The circulation system comprises a main storage tank for holding a cooling liquid and a pump... |
| US-5,781,573 |
High power solid state laser and method of increasing power using same A high power solid state laser has a solid state laser medium with two ends and a longitudinal axis, at least one laser diode configured to end pump the laser... |
| US-5,781,572 |
Optical wavelength stabilizing system An optical wavelength stabilizing system including a laser diode for emitting signal light, a Peltier element for controlling a temperature of the laser diode,... |
| US-5,781,571 |
Optical parametric oscillator with porro prism cavity An optical parametric oscillator or OPO (20) includes an elongated resonant cavity (22) for signal light, having a parametric gain medium (28) disposed therein... |
| US-5,781,570 |
Error processing method of ADPCM voice transmission system and apparatus
therefor Reception signal strength of ADPCM voice data in a transmission frame is detected every ADPCM voice data in an RSSI detecting section (2), and when a base band... |
| US-5,781,569 |
Differential trellis decoding for convolutional codes A differential trellis decoding method for convolutional codes is provided which eliminates from candidacy half of the transitions in each round that it is used,... |
| US-5,781,568 |
Error detection and correction method and apparatus for computer memory An S8ED system is implemented in a memory system to detect single errors involving one or more bits in a byte of subject data, stored in and retrieved from the... |
| US-5,781,567 |
Digital coding method and apparatus for the correction of burst errors Error-correcting apparatus and method for detecting and correcting a burst error affecting a plurality of reproduced signals representing adjacent data words... |
| US-5,781,566 |
Cyclic redundancy coder A cyclic redundancy coder (10) is arranged to reduce to a minimum the number of processing steps required in a processor, such as a DSP, to achieve a cyclic... |
| US-5,781,565 |
Data recording/reproducing method, data reproducing apparatus and
recording medium When data is recorded on a recording medium such as an optical disk and reproduced, if burst error occurs, the processing can be carried out efficiently and... |
| US-5,781,564 |
Method and apparatus for detecting and concealing data errors in stored
digital data A method and apparatus is disclosed for detecting and concealing errors in stored digital samples. A multibit digital input sample is received and an error... |
| US-5,781,563 |
Substitute circuit for a plurality of functional units For a defective functional unit (FE1), it is possible to switch over via electronic input and output changeover switches (EUS1, AUS1) via a combination unit... |
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