Product
Feature
Quick Research
Generate reliable direction feasibility study reports for your R&D in just a few steps.
Technical Q&A
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
Find Solutions
As an expert in R&D theories, this can generate solutions to your technical problems instantly.
Evaluate Feasibility
Analyze your overall solution with one click, know your potential R&D risks in advance.
Monitor Landscape
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
50results about "Electromagnetic effect elimination" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Electromagnetic field shielding device
InactiveUS6249006B1Easy to takeTelevision system detailsCosmonautic radiation protectionResonanceElectromotive force
The electromagnetic field shielding apparatus of the present invention includes the electromagnetic field detection coil 21 for detecting an AC leakage electromagnetic field and the parallel resonance circuit 22-24 whose circuit constants are predetermined so that the resonance frequency matches the frequency of the electromotive force induced by the electromagnetic field detection coil 21. The resistor 24 of the parallel resonance circuit 22-24 consumes energy so that the strengths of the magnetic and electrical fields passing through the electromagnetic field detection coil 21 are suppressed.
Owner:PANASONIC CORP
Flat display unit
InactiveUS20070080646A1Avoid damageDischarge tube luminescnet screensStatic indicating devicesLightning rodDisplay device
An SED is formed by sealing a front-side substrate provided with an image display area having a fluorescent layer on its inside surface, and a back-side substrate provided with a plurality of electron-emitting elements and driving wires for driving the electron-emitting elements, through a rectangular frame-like sidewall. On the outside of the image display area of the front-side substrate, frame-like power supply wiring to apply a high voltage to the image display area through a metal back is formed. In the area of the back-side substrate opposite to the power supply wiring, a bypass member to function as a lightning rod is provided electrically independent of a lower wire.
Owner:KK TOSHIBA
Magnetic Field Compensation Apparatus for Cathode Ray Tube
InactiveUS20090108729A1Electromagnetic effect eliminationPicture reproducers using cathode ray tubesVertical deflectionLight beam
A cathode ray tube (CRT) having a glass envelope is disclosed. The glass envelope is formed of a rectangular faceplate panel and a tubular neck connected thereto by a funnel. An electron gun is positioned in the neck for directing electron beams toward the faceplate panel. A yoke is positioned in the neighborhood of the funnel-to-neck junction. The yoke has windings configured to apply a horizontal deflection yoke field and a vertical deflection yoke field to the beams. At least one magnetic field sensor is located near the glass envelope for sensing an ambient magnetic field environment of the CRT. A controller receives a signal from the magnetic field sensor. Register correction coils are mounted in the vicinity of the neck and are dynamically controlled by the controller to shift the beams. Quadrupole coils are applied to the neck and have adjacent poles of alternating polarity such that the resultant magnetic field being dynamically controlled by the controller based on the magnetic field sensor signal moves outer ones of the beams to correct the misconvergence caused by the register correction.
Owner:THOMSON LICENSING SA
Cathode ray tube device that reduces magnetic field leakage
InactiveUS6404133B1Avoid consumptionEasy constructionElectromagnetic effect eliminationElectrode and associated part arrangementsClosed loopEngineering
Two closed-loop coils are respectively set at the top or the bottom of a cathode ray tube. These two closed-loop coils serves in a pair as a cancel coil. Each closed-loop coil is positioned so as to make an interlinkage with the magnetic field leakage that escapes from the deflection yoke, a part of the closed-loop coil running almost in parallel to the top or bottom edge of an effective display region of a front panel.
Owner:PANASONIC CORP
Electron gun for cathode ray tube
InactiveUS6952077B2Improve magnetic field efficiencyPrevent deterioration of focusing propertyElectromagnetic effect eliminationElectrode and associated part arrangementsImage signalElectric field
An electron gun for a cathode ray tube includes a cathode for radiating electron beams, a scanning velocity modulation coil for synchronizing the electron beams with an image signal, a focus electrode having first and second sub-electrodes disposed with a gap through which a magnetic field generated by the scanning velocity modulation coil passes, a plurality of grid electrodes with the focus electrode for controlling the electron beams radiated from the cathode, a support for aligning and supporting the grid electrodes, and a shield electrode electrically connected to the first and second sub-electrodes to protect against infiltration of an outer electric field. The shield electrode includes plural intermediate electrodes disposed in the gap between the first and second sub-electrodes, and electrical connecting unit for electrically connecting the intermediate electrodes to the first and second sub-electrodes. The intermediate electrodes are spaced away from each other.
Owner:SAMSUNG SDI CO LTD
Cathode ray tube apparatus
InactiveUS6054804AReduce leakageTelevision system detailsCathode-ray/electron-beam tube electrical connectionElectrical conductorNeck parts
A cathode ray tube apparatus that can reduce the leakage extraneous electric field with low cost. The cathode ray tube apparatus comprises a front panel, a glass bulb having a funnel part including an anode terminal at the outer surface thereof and a neck part including an electron gun, a deflection apparatus comprising a horizontal deflection coil on the outer surface of the funnel part and the neck part of the glass bulb, a flyback transformer connected to the anode terminal of the funnel part via a first lead wire having an insulating coating, and a leakage extraneous electric field controller installed on the first lead wire. The controller reduces the leakage of the extraneous electric field from the first lead wire. It is preferable that the leakage extraneous electric field controller comprises a negative pulse generator generating negative pulses having a reverse polarity and a synchronized period with respect to the horizontal deflection voltage signal of the horizontal deflection coil, a conductor at least partially surrounding the insulation coated first lead wire, and a second lead wire connecting the negative pulse generator and the conductor.
Owner:PANASONIC CORP
Distortion correcting device of X-ray image tube
InactiveCN101103431AReally distortedCorrect distortionElectromagnetic effect eliminationImage-conversion/image-amplification tubesMagnetic shieldX ray image
A magnetic sensor (32) detects an external magnetic field (m) to invade from the outside of an X-ray image tube (11) into an electron lens area (23), and a coil (33) arranged in an input face area (21) of the X-ray image tube (11) generates a magnetic field to cancel the external magnetic field (m) so that the influence of the external magnetic field (m) is eliminated to correct the distortion. The magnetic sensor (32) is arranged in the area, which is surrounded by a magnetic shield (20) of the X-ray image tube (11), and in the outer circumference area on the side of the electronic lens area (23) spaced from the input face area (21) of the X-ray image tube (11). The magnetic sensor (32) is less influenced by the magnetic field, which is generated by the coil (33) arranged on the side of the input face area (21) of the X-ray image tube (11), so that it detects the external magnetic field (m) to invade into the electron lens area (23), highly precisely. As a result, a distortion correcting device (31) of the X-ray image tube (11) can correct the distortion automatically.
Owner:KK TOSHIBA +1
Degaussing coil holder
InactiveUS7145761B2Easy to installWork lessTelevision system detailsMagnetic bodiesEngineeringSmall hole
To provide a degaussing coil holder for fastening a degaussing coil around a cathode ray tube which is easy in use and capable of stretching and fastening the degaussing coil in position, the degaussing coil holder is made of a resin mold having a hook to hang the degaussing coil, a catch to fixedly fit in a small hole made in a selected CRT fastening metal and an expandable strip integrally connected at both ends to the hook and catch.
Owner:ORION ELECTRIC CO LTD
Inner magnetic shield and cathode-ray tube
An inner magnetic shield includes a pair of opposing long side walls (1), a pair of opposing short side walls (2), and, in the center, an opening (3) surrounded by the two pairs. The short side walls (2) have a generally home-plate shaped cut (4) which reduces electron beam mislandings all over the screen. At the same time mislandings caused by the geomagnetism along the tube axis and those caused by that in the horizontal direction perpendicular to the tube axis can be balanced easily. As a result, the cathode-ray tube can display video free of color misregistration and uneven color.
Owner:PANASONIC CORP
Inner magnetic shielding material and method for production thereof
InactiveCN1479931AAvoid formingPoor machinabilityShielding materialsElectromagnetic effect eliminationSheet steelSurface roughness
An inner magnetic shielding material, characterized as comprising a cold rolled steel sheet having a surface roughness of 0.2 to 3 mumRa and, formed at least one surface thereof,, an organic resin coating film comprising C and H, or C, H and O, or C, H, O and N and having a thickness of 0.3 to 5 mum; and a method for producing the inner magnetic shielding material which comprises a step of annealing a cold rolled steel sheet, a step of adjusting a surface roughness of the annealed steel sheet to value of 0.2 to 3 mumRa, a step of forming an organic resin coating film comprising C and H, or C, H and O, or C, H, O and N and having a thickness of 0.3 to 5mum at least one surface of the cold rolled steel sheet. The inner magnetic shielding material has good resistance to rust and good degreasing and cleaning properties, is free from the danger of generating a corrosive gas, and also has good press formability.
Owner:NITTETABU STEEL SHEET CORP
Cathode ray tube
InactiveUS20030214211A1Improve recovery effectElectromagnetic effect eliminationPicture reproducers using cathode ray tubesWave shapePeak value
A cathode ray tube includes an evacuated envelope including a face panel, a funnel, and a neck; a color selection apparatus mounted inwardly from the face panel; an electron gun mounted within the neck; a magnetic shield mounted connected to the color selection apparatus; and degaussing coils mounted to an outer surface of the evacuated envelope. A degaussing current flowing to the degaussing coils has a waveform such that a line connecting a peak A from where a maximum current value first starts to decrease and a peak G of a sixth cycle is a functional curve of a second degree or greater.
Owner:SAMSUNG SDI CO LTD
Degaussing coil holder
To provide a degaussing coil holder for fastening a degaussing coil around a cathode ray tube which is easy in use and capable of stretching and fastening the degaussing coil in position, it is made of a resin mold having a hook to hang the degaussing coil, a catch to fixedly fit in a small hole made in a selected CRT fastening metal and an expandable strip integrally connected at both ends to the hook and catch.
Owner:ORION ELECTRIC CO LTD
Device for fixing an internal magnetic screen to a frame
A cathode ray tube comprising an internal magnetic screen (60) and a frame (40) supporting a shadow mask (3). The screeen is attached to the frame by means of cut-out tabs (63) on the peripheral lip (61) of the screen. The tabs are inserted into openings (62) on the surface of the flange (41) of the frame entering into contact with the screen. Said type of attachment makes it possible to eliminate additional parts and to automatize the attachment of the screen to the frame.
Owner:THOMSON LICENSING SA
Image display device
InactiveUS7355336B2Protected from vandalismDischarge tube luminescnet screensElectromagnetic effect eliminationElectron sourceScan line
The present invention provides an image display device free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge.On the outermost periphery of a display region, there are provided a bottom electrode 11 serving as data line, a scan line bus 21 serving as scan line, and dummy potential fixing electrodes 11D1, 11D2, 21D1 and 21D2 not contributing to image display, and these are connected with electrodes 70 and 80 with low impedance and constant potential.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1
Noise dampening degaussing coil holder
InactiveUS20050012460A1Suppress noise transmissionCathode-ray/electron-beam tube vessels/containersElectromagnetic effect eliminationCRTSMechanical noise
A resilient cylindrical degaussing coil holder with longitudinal ribs closely surrounds a degaussing coil for a cathode ray tube (CRT) to dampen mechanical noise transmission from the coil to the chassis assembly that holds the CRT.
Owner:SONY CORP +1
Image Display Device
InactiveUS20080185955A1Protected from vandalismDischarge tube luminescnet screensElectromagnetic effect eliminationCharge injectionElectron source
An image display device which is free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge. On an outermost periphery of a display region, there are provided a bottom electrode serving as data line, a scan line bus serving as scan line, and dummy potential fixing electrodes which do not contribute to image display, and are connected with electrodes with low impedance and constant potential.
Owner:SAGAWA MASAKAZU +4
Cathode-ray tube with erasing coil capable of minimizing electronic beam change on screen
InactiveCN1412812ADoes not affect installationImprove productivityElectromagnetic effect eliminationImage/pattern display tubesEngineeringElectron
A cathode ray tube includes a tube having a panel, a funnel, and a neck, a color selection apparatus mounted to the panel within the tube, an inner shield connected to the color selection apparatus. The inner shield includes a plurality of side walls that form a center opening through which electron beams pass, and at least one degaussing coil mounted at outer surface of the tube. The degaussing coil includes a first coil mounted toward the panel, a second coil mounted toward the neck, and a third coil connected to ends of the first coil and the second coil to interconnect the first coil and the second coil. The second coil is mounted on the tube in a state substantially overlapping distal edge portions of the side walls of the inner shield on which the second coil is mounted.
Owner:SAMSUNG SDI CO LTD
Cathode ray tube
InactiveUS20070126333A1Reduce the amount requiredCathode-ray/electron-beam tube electrical connectionCathode-ray/electron-beam tube vessels/containersEngineeringMagnetic shield
In an internal magnetic shield (28) that is substantially in a shape of a hollow truncated pyramid which is rectangular in a cross section, and has a small diameter opening on the side of an electron gun, the short edges (52 and 54) at the small diameter opening are formed in the shape of an inverted trapezoid that drops toward the panel, and the long edges (56 and 58) are formed in the shape of an obtuse-angled isosceles triangle that rises toward the electron gun.
Owner:PANASONIC CORP
Cathode-ray tube with erasing coil capable of minimizing electronic beam change on screen
A cathode ray tube includes a tube having a panel, a funnel, and a neck, a color selection apparatus mounted to the panel within the tube, an inner shield connected to the color selection apparatus. The inner shield includes a plurality of side walls that form a center opening through which electron beams pass, and at least one degaussing coil mounted at outer surface of the tube. The degaussing coil includes a first coil mounted toward the panel, a second coil mounted toward the neck, and a third coil connected to ends of the first coil and the second coil to interconnect the first coil and the second coil. The second coil is mounted on the tube in a state substantially overlapping distal edge portions of the side walls of the inner shield on which the second coil is mounted.
Owner:SAMSUNG SDI CO LTD
Unified magnetic shielding of tensioned mask/frame assembly and internal magnetic shield
The present invention provides a cathode ray tube (CRT) (1), comprising a tensioned mask frame (20) for supporting a tension mask (10) inside the CRT at a cantilevered edge thereof, a tension mask mounted on the tension mask frame at the cantilevered edge; and an internal magnetic shield (50) mounted on the tension mask frame. At least one of the tension mask (30) and the internal magnetic shield (50) have an extension (55, 56) extending along the tensioned mask frame (20) to a point proximate or contacting the other of the tension mask (30) and the internal magnetic shield (50) to provide magnetic coupling between the tension mask and the internal magnetic shield independent of the tensioned mask frame.
Owner:THOMSON LICENSING SA
CRT with structure for preventing electron beam from miscontacting of screen caused by geomagnetism
A cathode ray tube includes a panel having a front screen portion on which a phosphor screen is formed and a panel flange formed on an edge of the front screen portion; a funnel connected to the panel flange; a deflection yoke disposed around the funnel; a neck connected to the funnel; an electron gun disposed in the neck; a color selection apparatus for selecting electron beams emitted from the electron gun and allowing the selected electron beams to land on corresponding phosphors, the color selection apparatus including a frame having a pair of supporting members disposed at a predetermined distance from each other in parallel and a pair of elastic members fixed on both ends of the supporting members to correspond to the lateral sides of the mask; and a shield apparatus for shielding geomagnetism, the shield apparatus being mounted on a circumference of the frame of the color selection apparatus and extended toward the neck. The shield apparatus includes disconnection parts defined corresponding to the corners of the frame, the shield apparatus being extended toward the phosphor screen over one of longitudinal and lateral sidewalls of the frame.
Owner:SAMSUNG SDI CO LTD
Image receiving tube device
InactiveUS20030155853A1Avoid haloLow costElectromagnetic effect eliminationElectrode and associated part arrangementsEngineeringMagnetic shield
In a cathode ray tube including a panel provided with a phosphor screen, a funnel integrated with the panel, an electron gun disposed inside the funnel, a magnetic shield (1) for shielding an electron beam (5) emitted from the electron gun against an external magnetic field, and a frame (2) for holding the magnetic shield (1), the magnetic shield (1) includes, at a portion to be joined with the frame (2), a bent portion (20) bent toward a tube axis side, and a thickness T of the bent portion (20) at its edge on the tube axis side is 0.08 mm or less. By making the thickness T small, halation that is liable to occur in a cathode ray tube with a large deflection angle can be suppressed because electron beams reflected from an end face (11) and allowed to reach the screen without being shielded by the frame (2) are reduced.
Owner:PANASONIC CORP
Internal shield and cathode-ray tube containing it
InactiveCN1308994CElectromagnetic effect eliminationImage/pattern display tubesElectronCathode Ray Tube Display
An inner shield for a cathode ray tube includes a screen opening and an electron gun opening through which electron beams pass, and a main body including a pair of long sections and a pair of short sections interconnected to form the screen opening and the electron gun opening. A cathode ray tube includes the inner shield. Each of the short sections includes a cutaway section having a pair of first cutaway sections formed starting from the electron gun opening and extending at a predetermined angle for a predetermined distance toward the screen opening, and a second cutaway section formed starting from where the first cutaway sections end and extending inwardly toward the screen opening, the second cutaway section being formed to extend past imaginary lines formed from where the first cutaway sections end to a furthermost inward point of the second cutaway section, that is, the point of the second cutaway section closest to the screen opening.
Owner:SAMSUNG SDI CO LTD
Internal shield and cathode-ray tube containing it
An inner shield for a cathode ray tube includes a screen opening and an electron gun opening through which electron beams pass, and a main body including a pair of long sections and a pair of short sections interconnected to form the screen opening and the electron gun opening. A cathode ray tube includes the inner shield. Each of the short sections includes a cutaway section having a pair of first cutaway sections formed starting from the electron gun opening and extending at a predetermined angle for a predetermined distance toward the screen opening, and a second cutaway section formed starting from where the first cutaway sections end and extending inwardly toward the screen opening, the second cutaway section being formed to extend past imaginary lines formed from where the first cutaway sections end to a furthermost inward point of the second cutaway section, that is, the point of the second cutaway section closest to the screen opening.
Owner:SAMSUNG SDI CO LTD
A Design Method for Electromagnetic Compatibility of Low-light Image Intensifier
ActiveCN110310875BNoise shieldingSmall leakage inductanceElectromagnetic effect eliminationImage-conversion/image-amplification tubesInterference resistanceMechanical engineering
The invention discloses an electromagnetic compatibility design method for a low-light image intensifier, which solves the problem of the volume of the existing low-light image intensifier by performing electromagnetic compatibility design on the high-voltage power supply, the image intensifier tube, and the overall shell that make up the low-light image intensifier. The contradiction between the weight limit and electromagnetic compatibility improves the anti-interference ability of the low-light image intensifier in the environment of strong electromagnetic interference, and improves its working stability.
Owner:NORTH NIGHT VISION TECH
Apparatus for attaching to components of a microwave device
ActiveCN107773847BTransit-tube leading-in arrangementsCathode-ray/electron-beam tube leading-in arrangementsElectric cablesMaterials science
An apparatus for attaching to components of a microwave device, comprising: a cage; a shield within the cage, wherein the shield is in the form of a container, at least a major portion of the shield being in contact with the cage the inner walls of the frame are spaced apart; and a connector at the cage, wherein the connector is configured to connect to a cable connection, and wherein the connector is electrically connected to two terminals within the shroud. An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, the apparatus comprising: a connector having a first end and a second end, wherein the first end is configured as attached to a cable, and the second end is configured to connect to the input connection of the electron gun; and wherein the connector includes the heater terminal configured to receive the input connection of the electron gun opening.
Owner:VARIAN MEDICAL SYSTEMS
Electromagnetic interference containment for accelerator systems
ActiveCN107773847ATransit-tube leading-in arrangementsCathode-ray/electron-beam tube leading-in arrangementsElectricityMicrowave
An apparatus for attachment to a component of a microwave device, includes: a cage; a shield within the cage, wherein the shield is in a form of a container, at least a majority of the shield spaced away from an interior wall of the cage; and a connector at the cage, wherein the connector is configured to be connected to a cable connection, and wherein the connector is electrically connected to two terminals within the shield. An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, the apparatus comprising: a connector having a first end configured to be attached to a cable, and a second end configured to be connected to the input connection of the electron gun; and wherein the connector comprises an openingconfigured to receive the heater terminal of the input connection of the electron gun.
Owner:VARIAN MEDICAL SYSTEMS
Image display device
InactiveUS20060202605A1Protected from vandalismDischarge tube luminescnet screensElectromagnetic effect eliminationElectron sourceScan line
The present invention provides an image display device free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge. On the outermost periphery of a display region, there are provided a bottom electrode 11 serving as data line, a scan line bus 21 serving as scan line, and dummy potential fixing electrodes 11D1, 11D2, 21D1 and 21D2 not contributing to image display, and these are connected with electrodes 70 and 80 with low impedance and constant potential.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1
Inner magnetic shield material for cathode ray tube and process for producing the same
InactiveCN1662677AElectromagnetic effect eliminationInorganic material magnetismWaxSurface roughness
Owner:NITTETABU STEEL SHEET CORP
Projection display device and magnetic screen device
InactiveCN1476254ATelevision system detailsElectromagnetic effect eliminationEngineeringScreens (device)
In a CRT-based projection display apparatus that displays on a screen video images displayed on three CRTs for red, green, and blue respectively, by projecting the video images against a screen so that the video images are enlarged and synthesized, a deflecting yoke and a velocity modulating coil (7) are attached to a neck portion (12a) of each CRT (12). Furthermore, a cylindrical magnetic shield (3) is arranged so as to cover a coil portion (7a) of the velocity modulating coil (7) and a cathode (12b) of the CRT.
Owner:KK TOSHIBA
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com