Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8179138 | CRT test system A cathode ray tube (CRT) test system for testing a CRT device is disclosed. The CRT test system comprises a connecting device, a power module, a control module, a first test module, and an illumination module. The connecting device detachably and electrically connec... | 05/15/2012 |
| 7427887 | Open drain driver, and a switch comprising the open drain driver An open drain driver (7) selectively switches a MOSFET switch (MN1) which is passively held in the conducting state into the non-conducting state. The MOSFET switch (MN1) switches an AC analogue input signal on a main input terminal (3) t... | 09/23/2008 |
| 7309850 | Measurement of current-voltage characteristic curves of solar cells and solar modules A solar cell or solar module is measured during a short pulse of light in such a way that the resulting data for current and voltage at each light intensity is the same as would be measured under steady-state illumination conditions and therefore predictive of the a... | 12/18/2007 |
| 6972686 | Radiated field detector A testing device is operative to sense or monitor a radiated field emitted by an igniter for heating equipment such as an oil burner and to indicate the detection corresponding to a normal operating state of the igniter. ... | 12/06/2005 |
| 6661629 | Method and device for preventing arcing between a high-voltage external probe tip and a frit grounding band during frit knocking An insulating member is used on or with a high-voltage probe that applies a voltage to the anode of a cathode ray tube during manufacture of the tube. If there are flaws in the frit seal of the tube, the probe produces arcing through the flaw into a groun... | 12/09/2003 |
| 6577132 | Passive system for the detection and indication of non-ionizing electromagnetic radiations and static electricity A passive device for the detection and indication of non-ionizing electromagnetic radiations and static electricity is provided. The device is especially designed to be applied to or integrated in an anti-radiation/anti-static/anti-reflection filter inten... | 06/10/2003 |
| 6559591 | Removable grounding strip for anti-reflective films on cathode ray tubes and method of using same A non-adhesive, conductive strip is used to provide an electrical ground path between a solder electrode on the anti-reflective film of a cathode ray tube and the reinforcement or heat shrinkage band on the tube. The conductive strip is preferably held in... | 05/06/2003 |
| 6483313 | Method and apparatus for measuring convergence with respect to a color CRT using a color CCD camera An apparatus and method are provided for measuring convergence of the Red-Green-Blue (R.G.B.) signals of a color cathode ray tube (CRT) using a color charge coupled device (CCD) camera. A uniform R.G.B. brightness value is picked up by the color CCD camer... | 11/19/2002 |
| 6456080 | Cathode ray tube A cathode ray tube including a bulb having a screen on which a fluorescent film is formed, and a funnel portion having a neck portion on the side opposite to the screen, an electron gun mounted in the neck portion of the bulb, a deflection yoke mounted on... | 09/24/2002 |
| 6211629 | Cut-off level setting The cut-off level (Vcod) of a drive signal (Vd) of a cathode ray tube (3) is (Ib1, Ib2) occurring at these two levels (Vd1, Vd2).... | 04/03/2001 |
| 6104194 | Method of detecting secondary electron charge in a cathode ray tube In a method for determining whether electronic charge has been accumulated on the inner surface of a cathode ray tube (10), at least one electron beam is generated within the cathode ray tube and is deflected so that it hits the inner surface of the funne... | 08/15/2000 |
| 5994841 | Circuit for biasing display device by compensating for a varying leakage current A circuit apparatus and method is disclosed for determining the actual beam current of a display device having at least one cathode and that actual beam current is used to both correctly bias a voltage that drives the display device and determine the actu... | 11/30/1999 |
| 5929641 | Breakdown event detector A cathode ray tube may utilize a focus mask color-selection structure. The focus mask structure is susceptible to localized, transient short circuit events, or breakdown events. These events may be caused by conductive particulates that become free within... | 07/27/1999 |
| 5561578 | X-ray protector The invention tests the operation of a CRT X-ray protector circuit without applying an abnormally high voltage to the CRT. In addition to a first reference voltage corresponding to the detected voltage which is the standard for the operation of the X-ray ... | 10/01/1996 |
| 5231489 | Moire measurement system using spectral analysis A Moire measurement system uses spectral analysis to characterize the moire effect on a television signal introduced by a particular device. A known television signal is processed by the particular device, such as a video tape recorder, and the output is ... | 07/27/1993 |
| 5115229 | Method and system in video image reproduction A system and method for the accurate reproduction of the tone and luminance of a first video monitor screen includes, in one embodiment, a first video monitor and a second video monitor, each with a CRT screen. A gray scale test pattern is shown on both s... | 05/19/1992 |
| 5077600 | Self-inspecting convergence measuring apparatus A convergence measurement apparatus for a color CRT comprising a light sensor which is placed on the face of a CRT to be tested, a CPU, and a pattern generator which causes a plurality of luminescent lines of a primary color to be displayed on one area of... | 12/31/1991 |
| 4988857 | Misconvergence measuring apparatus This invention is concerned with apparatus for automatically measuring misconvergence in the production of color Braun tubes or color display apparatus using color Braun tubes. This misconvergence measuring apparatus includes a photoelectric transducer of... | 01/29/1991 |
| 4989072 | Apparatus for testing and adjusting color cathode ray tube equipment An adjusting apparatus for cathode ray tube equipment for convergence and/or image distortion adjustment which includes a pattern generator connected to a cathode ray tube to be measured and which generates a predetermined pattern having a plurality of ba... | 01/29/1991 |
| 4963828 | Picture quality testing method and apparatus for color cathode-ray tube For the purpose of automated evaluation of white uniformity, the apparatus comprises a color television camera for picking up an image of white color displayed on the color cathode-ray tube, a circuit for separating color signals from the output signal of... | 10/16/1990 |
| 4893925 | Optical measurement system for a display interface unit Prior art instruments for testing a display unit suffer from the disadvantage that a testing system has to be customized for each type of display unit. The present invention optical measurement system, by utilizing an optical sensor, a three-dimensional t... | 01/16/1990 |
| 4814858 | Method of measuring color purity of color display and apparatus therefor Disclosed are a method of measuring the color purity of a color display having phosphors in the shape of dots and an apparatus therefor which are capable of quantitatively measuring the state of the phosphors being irradiated with electron beams with high... | 03/21/1989 |
| 4797619 | Method and apparatus for measuring spatial profiles of energy beams An apparatus and method for measuring the spatial characteristics of color CRTs includes the scanning of an image of a white vertical line with a knife edge aperture and integrating the intensity values at each position of the knife edge. The centroids of... | 01/10/1989 |
| 4768091 | Testing apparatus for displaying scanning beam spot size and line focus on a CRT video screen Testing apparatus in accordance with the invention generates a composite video signal for a CRT which produces a scanning line raster on the video screen thereof clearly displaying the spot size and line focus of the scanning electron beam generating such... | 08/30/1988 |
| 4763004 | Calibration method for electron beam exposer A method of correcting the aberration of an electron beam due to astigmatism and field curvature of focus by feeding a correction current through stigmator coils and a focus correction coil. The correction currents are determined by measuring a sharpness ... | 08/09/1988 |
| 4754329 | Focusing and screen calibration method for display screen coupled to video camera A method of focusing and calibrating a display screen which is coupled to a video camera where the display screen is not visible when performing the calibration. The method includes the steps of generating a reference signal to display an image on the dis... | 06/28/1988 |
| 4752825 | Video display simulator and analyzer The display simulator analyzer is a fully integrated processor controlled instrument used for testing video display devices. The test signals may be generated by a video function generator, a high resolution graphics generator, a modulator or combinations... | 06/21/1988 |
| 4720282 | Method and apparatus for securing a cathode-ray tube during processing A method for holding a cathode-ray tube in a fixed position during processing utilizes mounting lugs attached to the tube. The apparatus includes a platform having a plurality of legs positioned to support, respectively, the ends of the mounting lugs. Eac... | 01/19/1988 |
| 4709191 | Process for adjusting a deflection unit for a three aligned gun television tube and device for reducing to practice said process The present invention relates to a process and a device for adjusting a deflection unit without utilizing a test tube whereby a measuring head is employed that samples the field along the length of the axis of the deflection unit in at least two zones, an... | 11/24/1987 |
| 4677340 | Method and apparatus for calibrating deflection in an oscilloscope The cathode-ray-tube beam deflection of an oscilloscope is automatically calibrated by photoelectrically detecting the intersection of the tube's electron beam with visible graticule lines on the tube's faceplate. An input signal is compared, at the time ... | 06/30/1987 |
| 4650436 | Deflection yoke centering apparatus An apparatus for centering a deflection yoke in a support ring includes a spindle having a tapered portion and a cylindrical portion. A spider, having radial arms, is centered on the spindle. A planar member includes an inset which is centered on the spin... | 03/17/1987 |
| 4602272 | Electron beam intensity profile measuring system and method A system for measuring the intensity profiles of the electron beams of color kinescopes includes a camera having a CCD. A color field is placed on the kinescope screen and a pixel in the center of one of the colored stripes is selected. The color field is... | 07/22/1986 |
| 4568975 | Method for measuring the gray scale characteristics of a CRT display A method and apparatus for measuring the Gray Scale characteristics of a CRT display wherein a luminance meter surveys a ten percent portion of the total surface area of the screen of the CRT display screen. The luminance meter is positioned far enough fr... | 02/04/1986 |
| 4563649 | Cathode ray tube tracking tester and method of testing Tracking of the electron guns of a multiple-gun cathode ray tube system is tested by individually testing the emission current of each gun, storing voltages proportional to the emission currents of each gun and subsequently selecting the highest voltage s... | 01/07/1986 |
| 4536792 | Method and apparatus for testing a CRT display under beam duty cycle variation A method and apparatus for testing the geometry of a cathode ray tube raster scan under beam duty cycle variation. Alternate polarities of white on black and black on white images of a test pattern are displayed on the CRT screen, and the displacement of ... | 08/20/1985 |
| 4459551 | Television receiver and test set voltage analyzer A television receiver and test set voltage analyzer includes a set of parallel connected switches which individually apply the various operating voltages to a readout device. The analyzer replaces a television picture tube so that the verification of the ... | 07/10/1984 |
| 4445872 | Method of detecting the vaporization of getter material during manufacture of a CRT In a method of vaporizing getter material from a getter container inside a vacuum electron tube, light from the vaporization is sensed at least from the outset of the heating of the container. A time-dependent sample signal is produced from the sensed lig... | 05/01/1984 |
| 4439735 | Method and apparatus for testing line screen CRT registration A method and apparatus are described for testing a line screen CRT for misregistration between its electron beam and the beam's phosphor stripe targets. The test method includes sensing light output at a plurality of test areas on the CRT screen as the el... | 03/27/1984 |
| 4433292 | Arrangement of a polychrome cathode-ray tube for operation with a reserved electron gun A color tube so arranged as to check the operation of an electron gun reserved for a particular type of visual display such as a red warning signal and therefore not normally employed for independent operation. The arrangements contemplated preferably inc... | 02/21/1984 |
| 4408163 | Method and apparatus for determining beam dimensions at the screen of a shadow mask cathode-ray tube The dimensions and light output of a beam in a shadow mask cathode-ray tube are determined by means of an optical system 7 focussed on a phosphor dot to pick up and record the light generated by a ray 4 passing through a single aperture 6 in the shadow ma... | 10/04/1983 |
