Abstract: A method of coloring a black and white video signal is provided. At least one area of a frame is defined with reference to luminance values in that frame, and luminance levels are assigned to that area. A color is then assigned to that area, and the area is colored with it. In a subsequent frame, luminance levels are used to determine which part of the preceeding frame has been carried over into the subsequent frame and which portions of the subsequent frame adjacent that part have the same luminance values. That part and those portions are then colored with the respective assigned color.
Abstract: A differential delay optical coherent pulse generating arrangement, in which continuous wave light derived from a coherent light source is divided by beam splitting means into two optical paths, in which the light beam in one of said paths is delayed relative to the light beam in the other of said paths by differential delay means prior to the sequential selection of the light from the respective paths by optical switching means to produce two coherent pulses in predetermined time displaced relationship and in which a frequency difference may, if required, be produced between the frequencies of the two coherent pulses.
Abstract: A channel selecting panel holder rotatably stores an operating section comprising a remote control transmitter inside the cabinet of a television set, video recorder and the like. The transmitter serves as an operating apparatus for the teleivison set. The operating apparatus is stored in a storage section provided in the cabinet.
Abstract: A capacitor bias unit includes a first path (26) having a first impedance (29) and a second path (27) having a low impedance and a switch (31) connected between a voltage reference source and a capacitor (23). The capacitor can either be subjected to normal charge characterisitics or quick charge by closing the switch (31). Maintaining an appropriately charged state on the capacitor (23) aids in preventing netting error voltage steps from introducing DC component signals that adversely effect proper decoding and reception of demodulated data.
Abstract: Devices and methods for minimizing multifrequency acoustic or electromagnetic noise that is propagated from its source to a remote region where the noise is to be abated by adaptive means are described herein. The noise minimization is achieved by sampling a noise, synthesizing from this sample a counternoise, the source of which is close to the noise source, and allowing the counternoise to propagate toward said region such that the noise and counternoise cancel each other as they arrive at said region. A closed-loop control is used to adjust the amplitude and time delay, or phase in case of monochromatic noise, of the counternoise during the synthesis, until the residual noise at said region becomes zero. For closed-loop control, the residual noise is transmitted back to the counternoise source by a communication link so that it can be used for said synthesis of the counternoise.
Abstract: There is disclosed a reproduction apparatus having image information generator, image processor for image formation, controllor for controlling the function of said image information generator and image processor, and a bus line for common use for the transport of image information between said image information generator and said image processor and for the transport of instructions from said controllor.
Abstract: The industrial installation comprises an active zone (III) with which there are associated means for measurement and for command and a control position (I) separated from the active zone. Means for measurement, for control and for command (15) located in the active zone are supplied with luminous radiations, from the control position, through an optical fibre (8) joining the active zone to the control position. Radiation having a broad spectral band is emitted in the fiber (8) from the control position (I) and then divided in order to obtain unitary radiations for supplying each of the means (15). The invention applies to nuclear reactors.
June 19, 1986
Date of Patent:
March 28, 1989
Jacques Meyer, Jean M. Bouchet, Jean P. Lande
Abstract: An image sensing apparatus performs either follow-up type color balance adjustment in which a color balance is adjusted according to the color component ratio of the external light and setting type white balance adjustment in which a color balance is adjusted according to the chrominance signal component ratio of an image pick-up signal. The apparatus is capable of always adequentely carrying out color balance by switching the two types of balance adjustment functions from one over to the other in conformity with any of varied conditions.
Abstract: Reduction of undesired r.f. harmonics, generated in the highest power power amplifier of a transmitter, is achieved by providing at least one alternate path for the undesired harmonics incorporating a relatively low powered power amplifier for at least one undesired harmonic component and causing the harmonic, in this alternate path, to have an amplitude that is substantially equal and a phase 180 degrees relative to the corresponding harmonic output from the main path and combining the outputs of the paths.
Abstract: An image processing system of the invention has a reader which reads out an image of an original, a page memory which stores image information of the original in the form of electric signals, a disk memory which stores part or all of the image information in the disk memory and also stores image processing information, an image processing section, a digitizer for the operator to input the image processing information, a CRT which displays input information or corrections in conversation language, a DMA controller, and a printer. The image processing system of the invention is capable of DNA transfer without the intermediacy of a CPU. Fewer addresses are required for readout of the image information from the memory, and high speed image processing is achieved.
Abstract: A method for operating a transmitting/receiving circuit for ultrasonic signals includes the steps of producing a carrier frequency by a voltage-controlled oscillator having an output frequency controlled in accordance with a temperature dependency of an inherent frequency of the transducer, modulating the carrier frequency, applying the modulated carrier frequency in a transmitting mode to energize an ultrasonic transducer to produce ultrasonic transmission signals, switching from the transmitting mode to a receiving mode, applying output signals from the transducer representative of received ultrasonic signals to a phase-locked-loop circuit using the voltage-controlled oscillator whereby the phase-lock-loop circuit is automatically matched to a frequency of the received signals.
Abstract: A modulation limiter that eliminates over-deviation otherwise caused by asymmetrical modulation signals in a frequency modulated (FM) transmitter. The output signal from a conventional modulation clipper is integrated, multiplied by a gain constant, and subtracted from the input, which causes the clipper output to have zero average and a high-pass frequency response with a time constant determined by the feedback gain. The zero average value allows the clipped modulation signal to be coupled to a modulator without over-deviation caused by shifts in the average value of the clipped signal, and the high-pass response can be used to give the modulation signal pre-emphasis.
December 30, 1986
Date of Patent:
January 31, 1989
Thomas J. Walczak, Michael E. Rebeschini, Melvin A. Schechtman
Abstract: A telecommunications system including a mobile unit is protected from operator-induced disruption by disabling the operator-adjustable controls of the mobile unit and fixing the operating parameters of the mobile unit. A supervisory apparatus incorporating supervisory circuit elements replacing the adjustable circuit elements associated with the operator-adjustable controls may be plug-connected between the main chassis and the control head of the mobile unit.
Abstract: A digital analyzer measures the synchronizing parameters of a color video signal, utilizing two microprocessor controlled time measuring blocks, one for relatively long time measurements and one for relatively short time measurements. The horizontal synchronizing signal and burst signal are extracted from the video signal and processed to obtain a vertical synchronizing signal, a field signal, a vertical pulse and equalizing signal, a burst flag signal, a burst position signal and a burst eraser signal. A multiplexer is utilized to select signals to be measured as a "window" signal for a clock signal. The measurement circuit for longer time measurements counts the number of clock pulses during the time "window". Shorter time measurements are made by gating the charging of a capacitor, the output voltage of which is converted to a digital signal by an analog to digital converter. A microprocessor controls the time measurements and displays the results on an LCD display and video monitor.
Abstract: Laser optical communication according to this invention is carried out by producing multi-frequency laser beams having different frequencies, splitting one or more of these constituent beams into reference and signal beams, encoding information on the signal beams by frequency modulation and detecting the encoded information by heterodyne techniques. Much more information can be transmitted over optical paths according to the present invention than with the use of only one path as done previously.
September 26, 1986
Date of Patent:
December 13, 1988
The United States of America as represented by the United States Department of Energy
Abstract: A digital receiver for GPS C/A-code signals is described. The GPS receiver of the present invention provides reception and tracking a plurality of satellites simultaneously, using four separate receiver channels. The GPS receiver of the present invention includes an analog front-end for selecting and frequency translating the received GPS signal. The GPS receiver further includes a highspeed digital signal processor for recovering the despread data of the GPS signal. The baseband signal is further processed by a general purpose digital signal processor for signal search, tracking, and data recovery operations, and a microprocessor provides overall receiver control, and interface with the operator of the GPS receiver.
Abstract: A split band filtering scheme to reduce adjacent band interference in a communications network, such as a cellular mobile radio system, is disclosed. A repeater, interposed between a base or cell site and a mobile/portable radio, includes a down converter for converting a system operating frequency to a lower frequency signal. The lower frequency signal represents a communications band. The signal is presented to a split band filter having a narrow passband with steep skirts. The processed signal is coupled to an up converter where it is restored to the system operating frequency. In this way, the passband of the repeater is restricted to that of the desired communications band and adjacent band interference is reduced or eliminated.
May 23, 1986
Date of Patent:
November 8, 1988
Peninsula Engineering Group, Inc.
Barry J. Leff, Edward R. Johnson, Joseph F. Lutz
Abstract: Structure for reproducing a copy from an original by driving an original past a light source and light sensors to develop signals in the sensors representative of intelligence on the original which it is desired to copy, driving a copy member past printers in synchronization with the driving of the original and actuating the printers in accordance with the signals sensed by the sensors. The sensors and printers are modular. Amplifiers may be provided between the sensors and the printers, and signals from the sensors may be stored prior to printing in response thereto. The reproduction may be different in size than the original and/or in color.
Abstract: A rotatable drum is arranged around a surface lying generally parallel to the axis of rotation, a plurality of bar code patterns, the individual bars making up each pattern extending normal to the rotational axis. A light beam in a plane is projected onto the surface, the plane lying generally parallel to the rotational axis such that light strikes the surface. A light beam also in a plane is reflected from the surface, the beam having relatively light and relatively dark regions corresponding to the particular bar code patterns upon which the projected beam is imaged. The reflected beam is passed through a cylindrical lens which fans the reflected beam into a wedge shaped beam projecting onto an object in the path of the beam successive bar patterns as the drum rotates.