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Topic: Video camera tube


  
  Document: OPIA Glossary (R-Y)
Movement of the video picture up or down the video screen at a moderate, even pace to expose the lower or upper portions of a scene that previously were not visible.
In video, the ratio of the peak amplitude of the signal to the rms value of the noise.
In video, a picture condition in which very bright or dark objects appear to be extended horizontally beyond their normal boundaries, often in reverse contrast.
www.zeiss.de /4125681F004CA025/allBySubject/B80D96EC917AD48085256CA6005E4F65   (2837 words)

  
  Dark current compensating lens iris control - Patent 4399466
The video signal is amplified and the horizontal and vertical blanking portions of the amplified video signal are replaced with the dark current sample to generate a dark current compensated or clamped video signal, i.e., the video signal superimposed on the dark current generated by the camera tube.
The video signal from the camera 100 is received on the conductor 106 and amplified by operational amplifier 201 which is connected as a unity gain amplifier and serves as an impedance converting butter to isolate the video signal on the conductor 106 from the remainder of the iris control circuit.
If the video signal level increases resulting in a decrease in the integrated output of the operational amplifier 240, the output signal of the operational amplifier 246 is decreased which causes an increase in the output signal of the operational amplifier 250 to apply a voltage which operates the motor 249 to close the iris.
www.freepatentsonline.com /4399466.html   (3818 words)

  
  tvcameramen.com - the online magazine
To cause a sharp image from a lens to be projected onto the focal plane (in the case of a camera) or onto a screen (in the case of a projector).
A video special effect in which the level of a video signal is used as a switch which allows selective substitution of picture information from one source with picture information from a different source.
Zebra pattern In a video camera, striped patterns which appear in the viewfinder screen to indicate areas of the image where the video level is higher than a certain value.
www.tvcameramen.com /resources/glossary_tech.html   (4754 words)

  
 Precision Camera & Video Sitemap
Precision Camera Branded Body Cap for Pentax K
Precision Camera Branded C Mount Adapter for Nikon
Precision Camera Branded Rear Lens Cap for Pentax K
www.precision-camera.com /sitemap.htm   (657 words)

  
 Document: OPIA Glossary (A-C)
In a video camera or monitor, the aperture refers to the size and shape of the electron beam that lands on the target or phosphor.
In video, the condition where the signal corresponding to the darkest part of the image is made to dip below the optical (or reference) fl level down to the blanking level.
Transient burn in a camera tube may be dissipated by exposure to a moderately bright, uniformly white scene.
www.zeiss.com /4125681F004CA025/ContentsWWWIntern/C3152DA695DB14D485256CA6005DA13E?OpenDocument   (2309 words)

  
 OPIA, news
In a video camera or monitor, the aperture refers to the size and shape of the electron beam that lands on the target or phosphor.
In video, decibels are the ratio of two signal voltages expressed as 20 x log (ratio of the amplitude of the test signal as compared to a second, usually a standard, signal).
The tube consists of a photocathode on the input and a phosphor on the output and sometimes a microchannel plate for increased gain characteristics.
www.opia.org /glossary.html   (9997 words)

  
 Video camera tube - TheBestLinks.com - Vidicon tube, Antimony, Charge-coupled device, Sulphur, ...   (Site not responding. Last check: )
In older video cameras, prior to the 1990s, a video camera tube or pickup tube was used instead of a charge-coupled device (CCD).
A vidicon tube (sometimes called a hivicon tube) is a video camera tube in which the target material is made of antimony trisulphide (Sb
The principle of operation of the vidicon camera is typical of other types of video camera tubes.
www.thebestlinks.com /Vidicon_tube.html   (160 words)

  
 Flying a Solid-State Video Camera
Flying a moving picture camera in a model rocket has been a goal and challenge that is as old as the hobby itself.
Even if you really cut back on the camera weight (back then, most cameras were made of metal, not plastic), it was still at the upper end of the weight and size limits of model rockets, especially at that point in the hobby.
While it might be possible to fly a video camera with an integrated recorder (camcorder), the spinning video head would tend to act like a gyroscope, and possibly cause the rocket to fly in an unexpected manner.
www.seed-solutions.com /gregordy/Rockets/VideoRockets.htm   (3362 words)

  
 Video camera tube
In older video cameras, before the 1990s, a video camera tube or pickup tube was used instead of a charge-coupled device (CCD).
This effect was actually "cultivated" by tube manufacturers to a certain extent, as a small, carefully-controlled amount of the dark halo has the effect of "crispening" the viewed image.
The vidicon is a storage-type camera tube in which a charge-density pattern is formed by the imaged scene radiation on a photoconductive surface which is then scanned by a beam of low-velocity electrons.
www.radiofreeithaca.net /search/Video_camera_tube   (2045 words)

  
 Video Color Correction
Three tube cameras needed to be constantly calibrated using a grey scale logarithmic chip chart to ensure equal dynamic response from each red, green or blue tube channel, lest a color imbalance ensue.
CCD cameras, though immune to the varying responses of analog tube cameras such as the Saticon and Plumbicon's; CCD's are not immune to the camera operator failing to properly white b
Unfortunately, many consumer cameras have no manual white balance over-ride, and are thus subject to introducing severe color imbalances when the "auto" circuitry cannot properly identify what should be a true white object in the scene.
www.videointerchange.com /color_correction1.htm   (788 words)

  
 The Birth of Television
Phil and Cliff were working on the first television camera tube which they called the "Image Dissector." It would dissect an image line-by-line with a pulsating electrical charge and then transmit these elements.
They discovered a rare chemical called cesium which had the photo-electric properties needed for their "Image Dissector." Cesium was widely used in radio tubes, but the only way they could get enough was to buy cases of radio tubes and smash them to remove the rare ingredient.
The Orthicon tube which became a part of the workings of television was invented by Farnsworth, but the name was owned by RCA.
www.videouniversity.com /farnhal.htm   (3422 words)

  
 Camera Remote Surveillance Video
Professional video camera - A professional video camera (often called a "television camera" even though the use has spread) is a high-end device for recording electronic moving images (as opposed to a movie camera, that records the images on film).
SmarTruck II has a night vision system, a (50x zoom) video system with thermal imaging and surveillance radar, cameras covering 360° (including one under the vehicle), and a launcher for a remote-controlled Unmanned Air Vehicle.
SmarTruck II has a night vision system, a (50x zoom) video system with thermal imaging and surveillance radar, cameras covering 360° (including one under the vehicle), and a 12,000-pound, straight-line hydraulic towing winch.
cc46.mmshy.com /cameraremotesurveillancevideo.html   (776 words)

  
 Distance Diagnostics through Digital Imaging
Hold the video camera and the top part of the longer-but-smaller-diameter tube steady (preventing them from turning), and screw the lower part of the adapter-tube set in or out until the monitor image is in as good focus as the image seen through the microscope eyepieces.
Loosen the knurled knob on the left side of the dissecting scope viewing tube, and move the tube (with video camera still sitting solidly on it) up and down until the monitor image is in as good focus as the image seen through the microscope eyepiece.
Through normal handling and moving the video camera with its adapter-tube set from one microscope to another, parfocal settings are likely to be jarred out of adjustment.
www.dddi.org /index.cfm?show=focusingmonitorimages   (529 words)

  
 24 Frame Rate
While video cameras are typically designed to bring images to the small screen of a television set, theatrical films must achieve a high degree of resolution even when projected on hundred-foot screens.
One of the defining elements of the video culture is the on-set monitor.
On a video set, producers and would-be producers don't hesitate to voice opinions about the images even as they are being created.
www.cameraguild.com /technology/24frame.htm   (2201 words)

  
 Camera Caught Surveillance Video Camera Cctv Digital Surveillance Video   (Site not responding. Last check: )
Still video camera - A still video camera is a type of electronic camera that takes still images and stores them as single frames of video.
They peaked in popularity in the late 1980s and can be seen as the predecessor to the digital camera.
Video camera tube - In older video cameras, before the 1990s, a video camera tube or pickup tube was used instead of a charge-coupled device (CCD).
www.faradayinc.com /cameracaughtsurveillancevideo.html   (544 words)

  
 Video Tape and Video Cameras
Betamax was the first successful consumer video format, and at one time it had close to 100% of the market.
All of the video machines in use and all of the pre-recorded movies were Betamax.
A television camera is focused by NACA technician on a ramjet engine model through the schlieren optical windows of the 10 x 10 Foot Supersonic Wind Tunnel's test section.
www.smecc.org /video_tape_and_video_cameras.htm   (3728 words)

  
 Video the Tube
Cathode ray tube - The cathode ray tube or CRT, invented by German physicist Karl Ferdinand Braun, is the display device that was long used in most computer displays, video monitors, televisions, radar displays and oscilloscopes.
Monoscope - A monoscope was a special form of cathode ray tube that was used to generate, rather than display, a video signal.
Each tube was only capable of generating a single video signal, hence the name.
ds1.gpnotp.com /videothetube.html   (1041 words)

  
 CVS Camcorder Rocket Project
We elected to have the camera point out the side of the cone with a mirror to point the image down past the rocket body.
This allowed us to mount the camera vertically in the rocket which means that none of the camera is exposed outside the housing.
The camera batteries were also replaced by a li-ion battery from an old cell phone.
www.csh.rit.edu /~soup/cvscam   (668 words)

  
 AllWan - camera video embarquee, camera de recul, retroviseur video, patrol camera ptz, vehicle camera, camera de ...
AllWan - camera video embarquee, camera de recul, retroviseur video, patrol camera ptz, vehicle camera, camera de recul, rear camera, rearview
Surveillance de recul, camera vidéo de recul, surveillance numérique.
Alimentation 12 V DC Camera couleur infrarouge IP66
www.allwan.fr /Camera_embarquee/cameras.htm   (594 words)

  
 Weatherproof Tube Color Camera
The Lorex Weatherproof Tube Color Camera is a bullet camera safe for indoor or outdoor use, and since it easily connects to your television or VCR with the included cables, you can view or record any activity around your property.
The Weatherproof Tube Color Camera's fl aluminum housing is completely weather-safe, so you can feel comfortable about using the camera outdoors, even in the rain and in temperatures well below freezing.
The Weatherproof Tube Color Camera has a built-in 3.6mm wide-angle lens and can be mounted on your wall or ceiling with the included mounting bracket.
www.smarthome.com /7654.html   (259 words)

  
 Panasonic Video
Has 14 pin camera input, 4 pin XLR power input, RCA Audio in/out (2 channel analog and 2 channel HiFi), mini headphone jack and audio level control, (2) audio selectors (selects analog or HiFi from camera microphone, line, or microphone inputs), 1/4" - Hi Z microphone inputs - Ch.
The AG-7400 has a 14-pin camera connector, S-video input/output, and two(2) RCA adaptors for easy hookup to any camera or video device.
Panasonic color TV camera model # WV-3320 and 2 control units.
www.smecc.org /panasonic_video.htm   (474 words)

  
 Weatherproof Tube Color Camera CVC2051P/R
With its completely sealed metal housing, this tube camera is 100% waterproof, making it perfect for installation in areas subject to rain or other wet environments!
Whether you use one camera as a standalone video surveillance system that you can connect directly to your TV, VCR or dedicated monitor, or integrate it with your existing surveillance system, you'll get long-lasting outdoor performance without scrimping on picture quality.
This high-quality camera is equipped with a built-in 3.6mm wide angle lens, with low 1 lux sensitivity and a high 380 lines of resolution.
www.smarthome.com /7654MCS.html   (328 words)

  
 NormanCamera.com - CANON EXTENSION TUBE EF25 II
Extension Tube EF 25 II & EF 12 II These close-up accessories are placed between the camera body and lens to enable high-magnification photography.
Eight electronic contact points allow communication between the camera and lens to continue as usual.
The magnification differs according to the lens selected, but for standard zoom lenses it is about 0.3X to 0.5X for the EF 12 II and 0.7X or more for the EF 25 II.
www.normancamera.com /product-exec/product_id/663/nm/CANON_EXTENSION_TUBE_EF25_II   (101 words)

  
 GigaOM » Google, You Tube & Dark Side Of Online Video
Google video consumes 100% of CPU time… If I sit down to test it seriously, I can log atleast 5 show stoppers but who cares as long as you are set to KILL the Evil.
Otherwise soon Google video will be populated by 4 min clips of one person staring at the camera while a song owned by RIAA playing in the background.
Unless you tube considers uploading a small clip from a DVD that you own not copyright infringement; however, I don’t think that is the case.
gigaom.com /2006/01/15/google-you-tube-dark-side-online-video   (4282 words)

  
 LabGuy's World: Vintage B/W Video Cameras   (Site not responding. Last check: )
Here is an old all vacuum tube video camera from the late 1950's or early 1960's.
While the studio switched to another camera, the operator would reach around and grab one of the posts between the lenses and give it a swift jerk.
He would then rapidly try to refocus before the director switched back to his camera.
www.labguysworld.com /Museum008_025.htm   (91 words)

  
 Video Display Products
Video Display Corporation group of companies dedicated to production of Data Display products at the highest level of quality and excellence.
For more than 20 years Video Display Corporation has been the premier supplier of Displays for Computer, Medical, Military, Industrial, Surveillance and Special purpose applications.
Video Display Corporation 1868 Tucker Ind. Road Tucker, GA 30084 sales@cathoderaytubes.com, Phone 770-938-2080 Toll-Free 800-241-5005 FAX 770-493-3903
www.videodisplay.com /html/products.html   (140 words)

  
 Amazon.com: Canon EF 25 II Extension Tube for EOS Digital Cameras: Camera & Photo   (Site not responding. Last check: )
With this tube, my 28mm focuses from about 1-1.1" from the front of the lense, with a depth of field of a fraction of a mm at f/1.8.
This is a simple extension tube that maintains automatic function with Canon EOS cameras and lenses (it is for both film and digital cameras so don't think it won't work on your older EOS bodies).
This extension tube does exactly what it is supposed to do.
www.amazon.com /Canon-Extension-Tube-Digital-Cameras/dp/B0000U1N38   (1036 words)

  
 Fake Surveillance Video Camera Digital Still Surveillance Camera   (Site not responding. Last check: )
The recent years to change in formation that will not spend cash machine.
The state intelligence services from a whole range of the following you as a way to carry them, taking part, or overt perhaps with computer monitor.
Surveillance has been used as drivers who usually have is not suited to preserve the envelope or 'bugs' are travelling to/working around your location, don't pay by means of a particular reason to, you in is to civil disobedience become more details.
www.faradayinc.com /fakesurveillancevideocamera.html   (480 words)

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