periodically (Total 1749 Patents Found)

A method of operating in a network (e.g., a power line communication network) in which a plurality of stations communicate over a shared medium (e.g., an AC power line) having a periodically varying channel. The method includes determining a plurality of channel adaptations (e.g., tone maps) for communication between a...
A filter system having a filter bed for filtering water or wastewater, where the filter bed is periodically washed between service runs by directing washing liquid and washing gas upwardly through the filter bed. The filter system includes a filter bed and at least one flume. The flume is in fluid communication with th...
A method for preparing a periodically poled structure according to this aspect of the present invention comprises the steps of providing a ferroelectric substrate and performing a poling process by applying a poling current to at least one portion of the ferroelectric substrate according to a current waveform. The curr...
Generating a waveform having one signal level periodically and different signal levels in other durations. Two input signals are received, one having a desired constant level and another having desired signal levels. The desired output waveform is generated by selecting one of the two input signals. As a result, the ou...
A semiconductor chip incorporating a current generating circuit that will both power-down selected circuitry during inactive or standby periods and yet maintain a bias current to other parts of the chip. More specifically, the current generating circuit has output lines for providing output currents that mirror the cur...
The inventive method employs the −/+ division for intensity norming but forms the quotient from the signal difference and the signal sum not from component signals (L 1 , L 2 ) generated by the sensor but—inventively —with signals (L 1 ′, L 2 ′) derived therefrom that exhibit periodically fluctuating intensit...
A DBR laser diode is provided where the phase φ of the wavelength selective grating is characterized by periodic phase jumps of period Λ PM and modulation depth φ J and the phase jumps of the wavelength selective grating are arranged substantially symmetrically, antisymmetrically, or asymmetrically about a midpoin...
The present invention is installed with a unidirectional transmission device at the active side, so when a transmission belt is tightened while the active pulley driving a passive pulley in periodically varied speed ratios, an auxiliary pulley ( 312 ) is linked simultaneously so as to form a prestressed force for stori...
A spectroscopy method is defined in which a first source of radiation (51) emits a periodically pulsed beam (A) having a repetition frequency ω and in that a second source of radiation (52) emits a periodically pulsed beam (B) having a repetition frequency ω+Δ, the beams are united with each other and directed at a ...
A mobile wireless access point includes at least one processor, memory and a cellular radio disposed within a housing, as well as a wireless router configured to generate and maintain a wireless hotspot within a geographic distance of the housing and to route data from the wireless hotspot to the Internet over the broa...
To impart a periodical pull to material passing through a drafting-arrangement having means in the drafting-field for false-twisting the material, stationary and revolving guides are arranged in the drafting-field transversely to the direction in which the material moves. Between drafting-rollers is arranged false-twi...
Monitoring method and monitoring device for checking the outflow of syrup in periodically operating sugar centrifuges, in which an illuminated patch is generated on the layer of centrifuged material in the centrifuge drum by means of a light or infrared-light source which radiates diffuse light and the brightness of th...
Die Erfindung betrifft eine periodisch arbeitende Sorptionsvorrichtung, umfassend eine Heizeinrichtung mit einer beheizbaren Oberfläche (1) zum Erhitzen eines Gemisches aus einem fluiden Absorptionsmittel und einem fluiden Kältemittel, wobei der Oberfläche (1) eine Gemischzuführung (2) zugeordnet ist. Nach der Erfi...
The invention relates to a computer tomography method, in which a periodically moving object, especially a heart, is irradiated by a beam bundle. In that process, intermediate images of one and the same subregion of the object are reconstructed using measured values from time intervals from different periods. That is, ...
A cleaning station for removing residual toner from a moving toner transfer surface includes a rotating brush and a scraper blade that is held away from the toner transfer surface when toner images are being transferred to recording media, such as sheets of paper. On a periodic basis, when toner images are not being tr...
A mobile telephone has a high frequency system clock and processing means. In a stand-by condition, when the telephone is not being used as such but is ready to receive incoming calls, polling signals are processed during a predetermined portion of a repeated periodic cycle. After completing cycle processing, the syste...
A optical apparatus ( 201 ) for use in an laser imaging system ( 200 ) is provided. The optical apparatus ( 201 ) includes one or more optical elements ( 215 ) that are configured to create an intermediate image plane ( 217 ) in the laser imaging system ( 200 ). A diffractive optical element ( 216 ) is then disposed at...
An image pickup apparatus capable of performing proper image evaluation in photographing a moving image by changing the exposure condition. An image pickup unit picks up an image of an object and a driving unit drives a focus lens in an optical axis direction. A control circuit controls a focus state of the object by c...
A Hall transducer produces a signal Vsig. Threshold voltages V Pth and V Nth are generated at the beginning, t update , of each of a succession of update time intervals, of 64 pulses in Vsig, to be fixed percentages respectively of the peak to peak voltage in Vsig. A proximity-detector binary output voltage is high w...
A compact and efficient ultraviolet laser source based on a optically-pumped solid-state or fiber laser that produces near-infrared output light suitable for nonlinear frequency conversion. The infrared laser output is frequency tripled or quadrupled to produce light in the ultraviolet wavelength range (200 nm to 400 n...
A circuit for obtaining a focus voltage that varies with the final anode voltage has a rectifier, a resistor, and a capacitor connected to a horizontal output transformer, which is specially designed to be resonant at the fifth harmonic. The series arrangement of the diode and the capacitor is connected between primary...
A method of fabricating an optical waveguide ( 18 ) comprises providing a sample of lithium niobate ( 10 ) that has one or more periodically poled gratings made by electric field poling, applying a patterned surface layer of metallic zinc ( 16 ) to a z-face of the sample so that the layer ( 16 ) has a pattern correspon...
A station for assembling pressed sheet-metal structures, for example, motor-vehicle bodies, includes fixtures for locating and clamping the various components of the structure in the assembled condition and programmable robots with electrical spot-welding heads. One or more robots have means for replacing their welding...
A controller ( 800 ) for a pulse width modulated display system. The controller ( 800 ) periodically determining the output of a light source by sampling the output of a light detector ( 808 ) an creating a smoothed approximation of the periodic waveform of the light source. A processor ( 806 ) in the controller ( 800 ...
Installation de traitement par air, par exemple, installation de réfrigération de produits alimentaires, comprenant un boîtier (1) comportant une auge allongée (12) servant à recevoir le produit alimentaire à traiter, un échangeur de chaleur (13), ainsi qu'un ensemble de ventilation (14) servant à produire ...
A method, apparatus, and system for increasing usable light from a high intensity lighting fixture to a target area without an increase in energy use. In one aspect, the circuit is retrofitted into an existing lamp circuit that allows selective change in operating power or wattage to the lamp, over a substantial period...
743,112. Cutting paper tubes. ROBINSON, E. B. March 25, 1952 [Nov. 3, 1950; Feb. 13, 1951], Nos. 26936/50 and 3435/51. Class 31 (1). [Also in Groups XXVIII and XL (b)] Apparatus for controlling the relationship between a continuously-travelling element and a device periodically co-operating therewith, comprises control...
The air conditioner and distributor comprises a treatment unit such as a particle filter. The unit is regenerated at least partially from time to time, using a heater upstream of the treatment unit to raise the temperature of the air passing through it to or above a predetermined level for regeneration. The regeneratio...
An astable multivibrator with an R/C coupling network establishing a nominal operating frequency in the KHz range works into a chain of binary divider stages stepping down that frequency to the order of one Hz. The last stage output or outputs of the divider chain are connected to the coupling network through a feedbac...
In a multiprocessor system, at least one processor is acting as a master processor and another processor is acting as the slave or shadow processor that checks operation of the first processor. Periodically, a controller switches operating mode of a master or main processor to slave or shadow mode, and at the same time...
A method for verifying computer generated data in periodically updated and replaced files to determine if data item characteristics in the files have changed in an unexpected manner. The method involves the steps of selecting a first version of each of the data item characteristics and selecting a second subsequent ver...
주기적으로 움직이는 대상체의 체적 정보를 제공하는 초음파 시스템 및 방법이 개시된다. 본 발명에 따른 초음파 시스템은, 초음파 신호를 주기적으로 움직이는 대상체에 송신하고 대상체로부터 반사되는 초음파 에코신호를 수신하여 복수의...
An air treatment plant, e.g. a freezing plant for foodstuffs, comprises a housing (1), an elongate trough (12) provided therein for receiving the foodstuff to be treated, a heat exchanger (13), and a fan assembly (14) for producing an air flow circulating through the heat exchanger, up through the trough and back to th...