Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7426065 | System and method for alternating between transmitting and reducing incident light on pixel portion of an imager An imager apparatus comprises a pixel and a first filter positioned in an incident light path for a portion of the pixel, the filter being operable to alternate between transmitting and reducing incident light on the pixel portion. ... | 09/16/2008 |
| 7061547 | Image displaying system of environment-adaptive type, image processing method and program An environment-compliant image display system, image processing method and information storage medium which can reproduce the same colors at different locations by absorbing any difference in the visual environment. In an individual environment, an image data is gen... | 06/13/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6870575 | Screen-noise eliminating apparatus and cathode-ray tube display apparatus A screen-noise eliminating apparatus including beam-spot-length control means for increasing or decreasing the vertical length of a beam spot on a display screen generated by an electron of a cathode-ray tube for displaying a TV signal; vertical enhancement means fo... | 03/22/2005 |
| 6313878 | Method and structure for providing an automatic hardware-implemented screen-saver function to a display product A hardware-implemented screen-saver prevents burn-in of an image displayed on a screen of a display product by automatically reducing the video gain, and therefore the contrast, of the image when the portion of the image within a two-dimensional detection... | 11/06/2001 |
| 6181385 | Method for processing transitional regions in a picture signal A method is proposed for processing transitional regions in a picture signal. The picture signal comprises a sequence of digital pixel values. A number of adjacent pixel values, which contain a processing pixel value, are combined to form a processing blo... | 01/30/2001 |
| 5805220 | System for transmitting a plurality of video programs simultaneously through a transmission channel System for transmitting n video programs simultaneously through a transmission channel having a predetermined bitrate, comprising in cascade a decoding assembly and an encoding assembly. The decoding assembly consists of n parallel decoding means provided... | 09/08/1998 |
| 5754342 | Video device utilizing a two-dimensional diffraction grating A two-dimensional diffraction grating (5, 14) has a plurality of grating elements arranged in two directions (X, Y) different from each other. The grating elements in one of the directions (X, Y) have a substantially uniform grating height (h) when viewed... | 05/19/1998 |
| 5241377 | Compact imager including a plurality of photodiode arrays An image sensor includes a plurality of photodiode arrays, each array including a plurality of photodiodes, the arrays being aligned in parallel and closely arranged, at least two charge transfer devices disposed parallel to and on opposite sides of the p... | 08/31/1993 |
| 5091718 | Color-monochrome visual display device A multiple color imaging device such as a beam index CRT (FIG. 3a/b), with red, green and blue phosphor stripes arranged in triplets each defining one color image pixel in the line scan direction having at least the red and green phosphor stripes coated w... | 02/25/1992 |
| 5065071 | Monochrome CRT with interference filter having filter layer with reduced transmission and projection color TV incorporating same The bulls-eye effect produced by projection television cathode ray display tubes with convexly curved faceplates and multi-layer interference filters is compensated by increasing the optical absorption of one of the filter layers having a decreasing cente... | 11/12/1991 |
| 4660076 | Color display apparatus including a CRT with internal switching valve A display apparatus which comprises a display tube having a channel plate electron multiplier and a penetron screen having an electrode (hereinafter termed the screen electrode) thereon by which an accelerating field is provided between the electron multi... | 04/21/1987 |
| 4612483 | Penetron color display tube with channel plate electron multiplier A penetron color display tube including a channel plate electron multiplier disposed between a low energy electron-beam-producing means and a luminescent screen. The screen is formed from repetitive groups of phosphor elements for luminescing in different... | 09/16/1986 |
| 4476485 | Constant current bias color switch for a beam penetration CRT A high voltage color switch for a beam penetration CRT includes a constant current driver which provides a bias current to the high voltage transformer in the first color write period when the baseline color is being displayed. One or more secondary color... | 10/09/1984 |
| 4468691 | Stroke during retrace color switch A high voltage color switch for a beam penetration CRT is well suited to generating a color write in one or more random colors during the retrace interval of a TV raster scan, or the like. The scanning period of the TV raster is in the baseline color for ... | 08/28/1984 |
| 4450387 | CRT With internal thermionic valve for high voltage control The magnitude of a DC high voltage supplied to an internal element of a CRT is varied by a thermionic valve that is located within the envelope of the CRT and that forms a voltage divider with an external load resistor. Only a small scale signal reference... | 05/22/1984 |
| 4442451 | Differential random color switch for beam penetration CRT A color switch for a beam penetration CRT can display a randomly selected color in a first color write period, and immediately after the first color write period the magnetizing current in the high voltage transformer is reset during a second write period... | 04/10/1984 |
| 4430667 | Apparatus for obtaining multicolor raster images using a voltage penetration screen CRT A color display system that employs a penetration type CRT, a control circuit and storage elements for holding the information to be displayed to obtain multicolored rastered images is described. The CRT is capable of exhibiting a predetermined number of ... | 02/07/1984 |
| 4406977 | Power supply circuit A power supply circuit is provided with a voltage control circuit (1) with negative feedback for applying a rapidly changing high voltage to the anode of a penetron-type cathode ray tube (3) for a color display system and with a deflection voltage correct... | 09/27/1983 |
| 4394682 | DC Switching circuit A tri-color cathode ray tube has three DC voltage supplies and three strings of triacs. Each string is coupled between one of the supplies and the anode of the cathode ray tube for selectively applying the voltage from the one supply to the anode. The tri... | 07/19/1983 |
| 4390896 | Power supply circuit A power supply circuit for applying a rapidly varying high voltage to a penetration type color cathode ray tube. First and second transforming units are provided for converting video signals and a supply voltage to high voltage levels of the cathode ray t... | 06/28/1983 |
| 4358688 | Controllable voltage converter system having a high switching speed Two identical variable voltage source include respective capacitors serially interconnected across a series combination of a capacitive load and a fixed voltage source. Each variable source further includes a commutation reactor having two windings electr... | 11/09/1982 |
| 4356435 | Random color switch for beam penetration CRT A color switch for a beam penetration CRT includes a return path through a pair of reverse biased diodes to recapture a substantial amount of the energy associated with changing the voltage on the anode of the CRT for a write period in a non-baseline colo... | 10/26/1982 |
| 4337421 | Sequential color switch for beam penetration CRT An improved sequential color switch for a beam penetration CRT includes a high voltage power supply and a high voltage transformer. A feedback circuit senses the DC level in the signal waveform applied to the transformer and feeds it back to the input of ... | 06/29/1982 |
| 4337420 | Dual mode color switch for beam penetration CRT A high voltage color switch for beam penetration CRT has two operating modes, the first of which is well suited to displaying a sequential group of colors on the faceplate of a CRT, and the second mode of which is well suited to displaying a random color ... | 06/29/1982 |
| 4297618 | Anode voltage deflection gain control for cathode ray displays A compensating gain control system provides improved operation of the deflection channels of cathode ray color displays, particularly a display of the penetration phosphor type. A sample of the indicator anode voltage is taken and the square root of the s... | 10/27/1981 |
| 4284928 | Switchable very-high-voltage direct-current power supply for capacitive load A power supply designed primarily for polychrome cathode-ray tubes of the penetration type and capable of switchover to three and/or four levels comprises a main high-voltage source and one or more auxiliary sources having lower rated voltage values, the ... | 08/18/1981 |
| 4281272 | High voltage switching power supply for penetration cathode ray displays An efficient switching power supply provides power for penetration phosphor cathode ray tube color displays employing rapidly selectable high voltages for anode or acceleration electrodes. The apparatus employs a serially connected command decoder, a volt... | 07/28/1981 |
| 4223252 | Color switching display system A deflection amplifier gain correction circuit for a beam penetration color cathode ray tube having a split high voltage anode in which the deflection waveform is shaped as a non-linear function of the final anode voltage and as a function of a dynamic fo... | 09/16/1980 |
| 4203055 | High voltage power supply system A high voltage power supply system particularly adapted for rapid switching of high voltage applied to an anode of a beam penetration color cathode-ray tube. Energy for making the rapid transition between voltage levels is stored in two energy storage ind... | 05/13/1980 |
| 4160996 | Switchable high voltage generator for penetration-type color CRT A very high voltage generator switchable between n levels for supplying a capacitative receiver, such as the screen of a polychrome display tube, and comprising a high voltage DC power source suitable for delivering two extreme levels of voltage straddlin... | 07/10/1979 |
| 4151444 | Voltage switching circuit for a color display system A power supply for a color display device of the type in which the color of light emitted by a phosphor screen is changed by switching an electron accelerating voltage between different levels, the switching being digitally controlled and being connected ... | 04/24/1979 |
| 4105912 | Radar viewing device The viewing screen of a radar apparatus contains a pair of luminescent layers having green and red luminescing colors respectively. The color of the radar image may be altered by photosensitive means responsive to ambient light which alters the anode volt... | 08/08/1978 |
| 4099088 | Display system with rapid color switching An improved color display system employing a beam penetration type cathode-ray tube with rapid color switching. The screen electrode is separated from the accelerating electrodes without the use of an isolating mesh so that the voltage applied to the scre... | 07/04/1978 |
| 4092566 | Switched high voltage power supply system A high voltage power supply system particularly adapted for rapid switching of high voltage applied to an anode of a beam penetration color cathode-ray tube. Energy for making the rapid transition between voltage levels is stored in two energy storage ind... | 05/30/1978 |
| 3939375 | Cathode ray tube having channel multiplier and electron reflecting system for energizing color phosphor strips A channel plate with color selection electrodes and color phosphors for use an an image display screen in a color television tube. This is a division of application Ser. No. 288,597 filed Sept. 13, 1972, now U.S. Pat. No. 3,860,849.... | 02/17/1976 |
