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| Number | Title | Issue Date |
| 7245315 | Distinguishing between fire and non-fire conditions using cameras Detecting fire and non-fire conditions includes receiving a plurality of frames of video information, determining an energy indicator for each of a subset of the plurality of frames, detecting a fire condition in response to the energy indicator for each of the subs... | 07/17/2007 |
| 6975346 | Method for suspect identification using scanning of surveillance media A method, program and apparatus for criminal suspect identification are provided. Monitoring and video recording are used to collect information at a given location. In response to specific events, such as a criminal act, the system uses real time analysis of the vi... | 12/13/2005 |
| 6940540 | Speaker detection and tracking using audiovisual data A system and method facilitating object tracking is provided. The system includes an audio model that receives at least two audio input signals and a video model that receives a video input. The audio model and the video model employ probabilistic generative models ... | 09/06/2005 |
| 6643538 | Directional intraoperative probe An introperative surgical probe incorporating both a fiber optic imaging system and multi-element beta/gamma radiation directional indicating system is described.... | 11/04/2003 |
| 6121614 | Pyroelectric-type IR receiving element and IR sensor using the same A pyroelectric-type IR receiving element comprises a pyroelectric substrate which is fixed to a supporting body at its support ends and at least one rectangular patch formed in the substrate. The patch is formed on its opposite surfaces with first and sec... | 09/19/2000 |
| 5743006 | Method for fabricating a focal plane array for thermal imaging system A hybrid thermal imaging system (20, 120) often includes a focal plane array (30, 130), a thermal isolation structure (50, 150) and an integrated circuit substrate (60, 160). The focal plane array (30, 130) includes thermal sensitive elements (42, 142) fo... | 04/28/1998 |
| 5644838 | Method of fabricating a focal plane array for hybrid thermal imaging system A hybrid thermal imaging system (20, 120) often includes a focal plane array (30, 130), a thermal isolation structure (50, 150) and an integrated circuit substrate (60, 160). The focal plane array (30, 130) includes thermal sensitive elements (42, 142) fo... | 07/08/1997 |
| 5528035 | Digital signal processing system for removing DC bias in the output of pyroelectric and similar detectors A digital signal processing system (100) removes DC bias in the output of a pyroelectric detector and similar types of detectors by adding together a first output signal which is inverted and a second output signal which is not inverted. The system (100) ... | 06/18/1996 |
| 5306912 | Optically addressed thermal imaging device A thermal imaging device includes detector pixels A, B, C provided by a pyroelectric layer 1 arranged between electrode structures 3 and 4. A photoconductive layer 7 is provided between the electrode structure 5 and a further electrode structure 9. The de... | 04/26/1994 |
| 5109277 | System for generating temperature images with corresponding absolute temperature values A temperature-imaging system for generating an absolute temperature value for a point of interest on a monitored surface is disclosed. The system includes a camera and a temperature analyzer. The camera gathers video image data related to surface intensit... | 04/28/1992 |
| 4740840 | Pyroelectric camera signal processing having interrelated multi-parameter pedestal signal level compensation A system and method are disclosed for pyroelectric camera signal processing, which processing includes multi-parameter automatic signal level adjustment to compensate for the effects of pedestal level variations. The pyroelectric vidicon tube generates an... | 04/26/1988 |
| 4694334 | Pyroelectric camera signal processing having pedestal signal level compensation A system and method are disclosed for pyroelectric camera signal processing, which processing includes compensating for the effects of pedestal level variations. The pyroelectric videcon tube generates an electrical output signal component indicative of t... | 09/15/1987 |
| 4686566 | Automatic initiation of target crossover recovery in a pyroelectric camera A system and method are disclosed for initiating target crossover recovery in a pyroelectric camera by electronically detecting crossover and automatically initiating recovery in response thereto. The video signal appearing at the output of the video ampl... | 08/11/1987 |
| 4539589 | Image stabilized rotational modulator for pyroelectric imaging devices Infrared radiation onto a pyroelectric vidicon TV camera is converted to a stable visible image by recourse to a rotational modulator which rotates the pyroelectric vidicon target with respect to the incoming radiation, about the rotational symmetry axis ... | 09/03/1985 |
| 4481535 | Signal processing system for chopper type pyroelectric camera A signal processing system is disclosed for a pyroelectric camera having a mechanical chopper in the optical path for causing information sensed by the camera to appear as dynamic information. The pyroelectric camera includes a pyroelectric vidicon tube w... | 11/06/1984 |
| 4437118 | Pyroelectric vidicon with improved signal-to-noise ratio A pyroelectric vidicon has an improved signal-to-noise ratio by essentially eliminating pedestal noise and using signal gain to overcome preamplifier noise. Pedestal noise is substantially eliminated by charging the target, during the flyback read period,... | 03/13/1984 |
| 4393403 | Rotating diaphragm for a dynamic pick-up device having a pyroelectric layer By rotating a diaphragm in front of a pickup device, for example a pyroelectric vidicon, eddy currents are generated in the diaphragm if the diaphragm is made of a metal. These eddy currents are generated as a result of the interaction between the moving ... | 07/12/1983 |
| 4379232 | Ferroelectric imaging system An improved ferroelectric imaging system comprises a chopper, lens system, ferroelectric detector matrix, switching matrix, temperature controlled heat sink, drive and read out electronics, video processor and display. The chopper interrupts infrared ener... | 04/05/1983 |
| 4366381 | Electrothermographic apparatus for detection and pinpointing of malignancies in human bodies Apparatus for supplying signals to a vidicon which furnishes a color image of a selected portion of the human body, especially of the mamma, has an optical scanning system which transmits a thermal image of the selected portion of the body to a pyroelectr... | 12/28/1982 |
| 4348611 | Ferroelectric or pyroelectric sensor utilizing a sodium nitrite layer A pyroelectric or ferroelectric sensing element consists of a substrate with a thin layer of sodium nitrite. Electrodes may be applied to both sides of the sodium nitrite layer, or, alternatively, only one electrode may be used. In one embodiment, an arra... | 09/07/1982 |
| 4288817 | Method and a device for eliminating fixed error disturbances in a pyroelectric vidicon A signal processing method for eliminating fixed error sources in the video signal of a pyroelectric vidicon comprising the step of adding the signal value at each point of the pyroelectric plate to previous signal values relating to the same point for fo... | 09/08/1981 |
| 4227210 | Radiation shutters A rotatable thermal shutter for use with a pyroelectric camera tube is provided with blades having opening and closing edges in the shape of a spiral. The use of a spiral shape allows the rotatable shutter to have a particularly small diameter while still... | 10/07/1980 |
| 4225882 | Method and a device for analyzing a pyroelectric target A method and a device for analyzing a pyroelectric target in an evacuated envelope. The target with two opposite faces has a first face disposed towards a zone of the envelope which is transparent to an incident radiation. The second face is orientated to... | 09/30/1980 |
| 4193302 | Methods and apparatus for examination of surface temperature distribution The invention is concerned with monitoring the temperature distribution of a surface which may not be a good emitter of thermal radiation. In the invention a member which is of relatively low thermal conductivity and high thermal emissivity is placed in c... | 03/18/1980 |
| 4191967 | Infrared imaging device using a pyroelectric image tube An infrared imaging device enabling operation in the panning mode with a very high sensitivity and the facility of viewing a desired part of the observed field. A pyroelectric imaging tube is shifted relative to the observed scene and the infrared image o... | 03/04/1980 |
| 4177483 | Process and arrangement for reconstituting the thermal flux absorbed by a pyroelectric target Process and arrangement for reconstituting the signal representing the thermal flux absorbed by a pyroelectric target, the arrangement being used in infrared camera tubes. It comprises means for correcting the signal Sn for reading a point of co-ordinates... | 12/04/1979 |
| 4164753 | Dual pyroelectric vidicon infrared camera Two pyroelectric vidicons are adapted to alternately receive infrared ene radiated from an object by means of a rotating half circle mirror and fixed mirror arrangement. The alternations of the infrared energy received between the two vidicons are synchr... | 08/14/1979 |
| 4142207 | Ferroelectric imaging system An improved ferroelectric imaging system comprises a chopper, lens system, ferroelectric detector matrix, switching matrix, drive and readout electronics, video processor and display. The chopper interrupts infrared energy emanating from a scene, and the ... | 02/27/1979 |
| 4142206 | Pyroelectric solid state imager An improved solid state pyroelectric imaging system having readout of the cture elements of the pyroelectric disc in a plurality of parallel readout channels. Each picture element of a given line is sequentially connected through photoconductive switches ... | 02/27/1979 |
| 4100573 | Thermal imaging transducer and system A wedge of ferroelectric material is used as a thermal imaging transducer by plating a multiplicity of signal generating electrodes to the surface of the ferroelectric wedge. The wedge is electronically polarized using a descending voltage and thermal ima... | 07/11/1978 |
| 4100574 | Method for electrically reading a resistive target in a camera tube A method for electrically reading a target such as a pyroelectric one, in a camera tube. It consists in the repetition of a sequence of three phases: reading by an electron beam scanning process, compensation by secondary electron emission and levelling o... | 07/11/1978 |
| 4095257 | Orbiter for pyroelectric focusing devices Infrared light from an object directed into a thermal imaging television camera by a lens is passed through an angularly mounted rotating plate to impart orbital motion to the image received upon the image plane of the camera. A variable speed drive is op... | 06/13/1978 |
| 4072863 | Pyroelectric infrared detection system A pyroelectric infrared radiation detection system includes a high density solid state pyroelectric detector array for detecting infrared radiation impinging thereon and for producing signals representing the detected radiation, apparatus for readout of t... | 02/07/1978 |
| 4069502 | Methods of operating pyroelectric camera tubes A method of operating a pyroelectric camera tube having a normally provided electron beam emitting cathode and control grid G1 controlling the electron beam, and a gas in the interior space of the tube by applying positively-going pulses to the... | 01/17/1978 |
| 4040087 | Electronic motion compensation for the pyroelectric vidicon An image motion correction is provided for a pyroelectric vidicon which pides a standard television video output signal.... | 08/02/1977 |
| 4031394 | Camera device with resistive target In camera using resistive targets wherein a recording tube of which the target (100) made of a pyroelectric material in the example and read by a beam of electrons, permanently receives a flow of ions formed in the tube by the collision between the electr... | 06/21/1977 |
| 4021847 | Compensation circuit for pyroelectric vidicon system A correction circuit for a pyroelectric vidicon system wherein the image is canned by an oscillating or rotating mirror is provided which operates only on the synchronization and blanking pulses so as to remove image motion from the video signal.... | 05/03/1977 |
| 4004087 | Panning pyroelectric vidicon system A pyroelectric vidicon system that converts a still infrared image into tmal and a consequent visible image that is free of flicker or image motion. The required changes of temperature patterns on the retina of the vidicon to observe still images is prov... | 01/18/1977 |
| 3946232 | Pyroelectric camera tubes A pyroelectric camera tube having a high resistivity target is operated by applying an increasing ramp voltage to the target so as to provide a pedestal potential which permits objects producing a negative change in temperature to be viewed and then pulsi... | 03/23/1976 |
