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| Number | Title | Issue Date |
| 6980246 | Process for controlling a photosensitive device including a photosensitive point produced by techniques for depositing semiconductor materials A process for controlling a photosensitive device including at least one photosensitive point with a photodiode connected to a switching element. The process submits the photosensitive point to successive imaging cycles. Between a first imaging cycle and a second im... | 12/27/2005 |
| 6140745 | Motor mounting for piezoelectric transducer A piezoelectric motor has a piezoelectric transducer disposed within a motor housing. The piezoelectric transducer is constructed of one or more piezoelectric elements, the opposite ends of which are loosely secured within recesses in the interior walls o... | 10/31/2000 |
| 5218443 | Television camera tube with spurious image black-out screen A television camera tube with spurious image black-out screen is disclosed. Especially in image pick-up tubes where the electron beam, scanning a photosensitive target, is oriented by a system of electrostatic deflection, it has been observed that spuriou... | 06/08/1993 |
| 4772953 | Method for processing picture information having a large dynamic range with a television camera tube, and also a device for applying the method The blooming effect in pictures of a television camera tube (such as a vidicon, an orthicon or an isocon) is counteracted by setting the cathode potential to a first standard value during one scan of the scanning electron beam and to a second value during... | 09/20/1988 |
| 4748508 | Successive approximation type control of the electron beam of a camera tube Dynamic beam current reserve margin in television camera tubes necessary for the neutralizing of bright spots, which is accumulated on the camera tube signal electrode during a multiplicity of successive picture field periods after which a signal electrod... | 05/31/1988 |
| 4698684 | Cathodochromic CRT erasure and tube set up method An improved method for erasure of an image target in a CCRT projection system includes the steps of projecting a defocused electron beam onto the target forming a scan line, establishing an energy level below the erase threshold to prevent erasure of any ... | 10/06/1987 |
| 4633318 | Protection circuit for a television camera preamplifier A television camera including a preamplifier suitable for use with a pick-up tube (1) comprising an anti-comet tail gun (ACT). A preamplifier input terminal (9) which is connected to the pick-up tube (1) by a direct current connection (10) is connected to... | 12/30/1986 |
| 4614965 | Color camera with stripe filter using two controllable bias lights for improving color reproducibility in dark scenes and reducing afterimages A color TV imaging apparatus has a color TV imaging device which generates a multiplex color TV video signal by means of a photoelectric transducer section equipped with a color separation stripe filter. A first bias light supply device is located in a fr... | 09/30/1986 |
| 4595955 | Electro-optical tube alignment and beam current adjustment Electro-optical tube alignment apparatus having a monitor for monitoring shading of the tube image, an adjustment device for adjusting tube target bias voltage so that shading is introduced into the image and is monitored by the monitor, and a control for... | 06/17/1986 |
| 4540919 | Method and apparatus for automatically controlling highlight effects During the horizontal retrace scan period of a scanning beam in a television pickup tube, the beam current is increased to the maximum possible value to recharge the target layer, and the cathode voltage is raised by a few volts to prevent readout of norm... | 09/10/1985 |
| 4402326 | Occlusion pressure image system This disclosure relates to an occlusion pressure image display system which is designed to make visual display of the output signals of the occlusion pressure sensor in the form of a black-and-white or color brilliance image on a CRT screen. The system co... | 09/06/1983 |
| 4385323 | Camera pickup tube circuit for automatically suppressing excessive highlights in response to their occurrence A circuit for suppressing the effects of excessive highlights is automatically enabled in response to highlights in the viewed scene which exceed a given threshold. The circuit is used in combination with a special pickup tube or tubes which include exces... | 05/24/1983 |
| 4379310 | Image tube suppression circuit A suppression circuit processes the video signal from an anti-comet tail (ACT) image pickup tube and develops a control signal indicative of illumination highlights exceeding a predetermined level. The control signal is coupled through ACT pulsing circuit... | 04/05/1983 |
| 4319274 | Method of recording image information on the target of a scan converter tube A method and apparatus for recording and superimposing image information on the target of a scan converter tube. The image information is supplied in the form of an electric video signal by means whereof the electron beam projected from the cathode of the... | 03/09/1982 |
| 4266248 | Device having a camera tube A device having a camera tube of the vidicon type. During flybacks of the deflection, the beam current and the cathode potential is increased so as to achieve the so-called anti-comet tail effect. In order to ensure that the beam lands on the radiation se... | 05/05/1981 |
| 4249215 | Televison camera comprising a pick-up tube A television camera comprising a pick-up tube provided with a directly heated cathode which is connected to a heater voltage source which is implemented as a pulse voltage source, the pulse heater voltage being present in at least a portion of the line bl... | 02/03/1981 |
| 4237491 | Television camera highlight discharge apparatus In a television camera having an electron scanning beam stabilizer circuit, a circuit for improved handling of highlights comprises means for forming an electrical signal corresponding to a pickup tube image highlight, limiting the magnitude of said signa... | 12/02/1980 |
| 4217607 | Process and device for the instantaneous display of a countryside scanned by a camera of the single line scanning type A process for the instantaneous display of a countryside scanned by a camera apparatus of the single line scanning type, comprising charging the target of a double gun tube, acting as an intermediate information support between the single line scanning ap... | 08/12/1980 |
| 4214275 | Apparatus and a process for reading a target of a camera tube An apparatus, and a process, for reading a target of a camera tube. The apparatus includes circuits for scanning the inner surface of the target along a plurality of parallel lines. The scanning being done by an electron beam. Means for stabilizing each l... | 07/22/1980 |
| 4155101 | Gating circuit for use with camera incorporating highlight overload protection A gating circuit intended for use with a camera tube having highlight overload protection is designed to prevent excessively large signals reaching a following video amplifier. These large signals arise when highlight overload protection pulses are applie... | 05/15/1979 |
| 4145722 | Image pickup tube devices In an image pickup tube device of the class comprising an image pickup tube including a face plate and a coil assembly surrounding the tube and a bias light source device including a plurality of luminous elements mounted in a hollow circular disc shaped ... | 03/20/1979 |
| 4143305 | Television camera tube arrangements The invention relates to a camera tube arrangement utilizing a so-called H.O.P. (highlight overload protection) or A.C.T. (anti-comet tail) type of camera tube. In order to mitigate the problem of highlights appearing at the top of the picture, in additio... | 03/06/1979 |
| 4121255 | Television camera apparatus The target of a television camera tube comprises photoconductive material in the form of a regularly interrupted structure so that both the photoconductive material and parts of the signal electrode are accessible to the electron beam. The potential diffe... | 10/17/1978 |
| 4101932 | Video preamplifier for camera operated in act mode A video preamplifier for use in television cameras which have imaging tubes operated in an ACT mode. Circuitry is provided for sensing and amplifying the video signal without substantial interference from the large white pulses which are inherently part o... | 07/18/1978 |
| 4097901 | Lag reduction in image transducers having dynamically shaped rasters An active retrace beam is used to reduce the effects of lag in an image transducer. The retrace beam is defocussed to provide large area, uniform stripping action. After the read-out beam has traced across the photocathode of the image transducer, the act... | 06/27/1978 |
| 3955116 | Circuit arrangement suitable for use in a television pick-up tube provided with an anti-comet tail electron gun An automatic control for the optimum control voltage during the line flyback time between the control electrode and the cathode of an ACT gun in a television pick-up tube. A variation in the cathode potential during the line flyback requires inter alia an... | 05/04/1976 |
