Surveillance Application System

Terms in alphabetical order

• a
  azimuth/yaw
  It refers to one of the terms used to describe the position of the satellite as seen by the observer and refers to the satellite's bearing angle (angle to the left and right of the horizontal plane).
  automatic vessel tracking device
  It refers to the fact that the surveillance camera captures (locks onto) a travelling subject by means of image recognition and automatically rotates the camera vertically and horizontally while following the movement of the travelling object.
  AIS (Automatic Identification System)
  It refers to a device that automatically identifies vessels using VHF radios. The detailed function of the device is that it automatically transmits information to nearby vessels and land stations, such as your own vessel name, its MMSI code, its type, its position, its course, its speed, its destination, its cargo, etc.
  AGC
  It refers to an abbreviation for Auto Gain Control. It is a function that automatically controls the sensitivity of the camera.
• b
  BNC for video output
  It refers to the video signal output using one of the forms of video connector called BNC. Generally, the video signal system is specified as NTSC.
• c
  coachwork technology (for vehicles)
  It refers to the creation of systematization and finishing regarding the assembly of products and parts.
  camera auto-rotation function (including AIS, plotter, camera direction, etc.)
  It refers to the function that the rotary base is automatically controlled and operated after a microcomputer is embedded in the control device of the rotary base.
  camera control unit
  It refers to devices that control and operate surveillance cameras such as visible cameras, infrared cameras, and laser cameras.
  camera rotary base
  It refers to a camera platform with a built-in motor that can be automatically or manually operated and rotated in any direction in combination with a surveillance camera.
  camera operation console (operation panel)
  It refers to an operation console or a panel that can operate various operation devices collectively in one place. There are types of mechanical panels, touch panels, etc.
  camera housing
  It refers to boxes that house various surveillance cameras and protect them from storm and flood damage.
  camera orientation
  It refers to any angle at which it is pointing to the left, right, up, and down with the bow at 0 degrees for a camera mounted on a vessel.
  CCD
  Charge Coupled Device Image Sensoror
  →Refer to the item of image sensor.
  CMOS
  Complementary Metal Oxide Semiconductor Image Sensor.
  →Refer to the item of image sensor.
  cycle
  It refers to the amount of time it takes to return to the original position on a regular basis.
  canopy deck
  It refers to the top deck of vessels. Also known as the upper deck.
• d
  detection wavelength band
  It refers to the wavelength band (radiation temperature band) that can be recognized (detected) as temperature by the element of the infrared camera. There are two wavelength bands that can receive light, which are the 3-5μ band (medium wavelength band) and the 8-14μ band (long wavelength band).
  device for superimposing and displaying various information
  It refers to a device that separately controls and displays various information using a signal cable and a monitor.
  duty cycle
  It refers to an occurrence of constant irradiation of lasers when the cycle indicates 100%. On the other hand, it means that when the cycle is 0%, the laser is always put off. Therefore, when the cycle has a higher percentage, it can be said that there is the occurrence of a large proportion of laser irradiation in a certain period.
  denoiser (image sharpening device)
  It refers to a device that reduces noise on images. It can remove the noise and correct the contours to clarify the shape of objects.
• e
  extender (lens)/EXTENDER
  It refers to increasing the shooting magnification by x times by inserting a magnifying lens, etc. into the optical path of the optical system without changing the distance between the camera and the subject.
  (However, it can be said that the F-number becomes darker and the resolution and contrast are slightly reduced.)
  elevation (pitch)
  It refers to the vertical position angle of the satellite as seen by the observer and is called the elevation angle. In the transmission of video and control signals, the video from surveillance cameras installed in remote locations is transmitted to the monitor via optical cables or wireless. It is also a signal used to control (operate) lenses and rotary bases.
  emergency power supply
  It refers to an emergency power supply that prevents sudden power shut-off due to power failure, etc. It is such a power supply that allows the system to be safely stopped and used for a period of time with limited functions and performance to prevent equipment failure due to power shut-off.
  emissivity
  It refers that emissivity of a body at a given temperature is the ratio of the total emissive power of a body to the total emissive power of a black body at that temperature.
  extremely high frequency
  It refers to electromagnetic waves with a wavelength of 1 to 10 mm and a frequency of 30 to 300 GHz.
  
• f
  farming fishery
  It refers to the process of raising fish and shellfish from juveniles to a certain size, returning them to the ecosystems of oceans and rivers to grow naturally, and then systematically catching them again by fishermen.
  Aquaculture, on the other hand, refers to the process of building fish cages and racks and continuously feeding fish and shellfish until they are large enough to be eaten.
  frequency
  It refers to the number of pairs of peaks and troughs that occur within one second.
  focal length
  It refers to the focal length that is the position where the lens and the optical axis intersect due to optical refraction after the lens is placed at the optical axis position where rays parallel to the optical axis are incident.
  F-number
  It refers to the value obtained by dividing the focal length of a lens by its effective aperture, and is used as an indicator of the brightness of the lens.
• g
  gimbal (stabilizer)
  It refers to a device mounted on vessels or aircraft to reduce rolling, pitching, and yawing, and is also equipped with a gyroscope etc. When the gimbal has a double structure, one is called the outer gimbal on the outside and the other is called the inner gimbal on the inside.
  GPS
  It refers to an abbreviation for Global Positioning System.
• h
  horizontal resolution
  It refers to the expression of the number of dots and pixels due to its digitization. It can be said that the higher the number, the higher the resolution.
• i
  Interline Transfer (IT)
  It refers to a method where photoelectric conversion and charge accumulation are performed by a photodiode, and transfer is performed by a vertical CCD.
  image quality improvement device (image sharpening device)
  It refers to the device that displays sharper images after by controlling the brightness ratio in black and white by a microcomputer.
  image sensor
  It refers to a two-dimensional semiconductor sensor that converts light into digital information, and correspondes to the retina of human eyes. Surveillance cameras focusing on moving images use CCD elements. As a further choice, many high-definition video cameras are sold using CMOS semiconductor elements.
  infrared rays
  It refers to the light that is with a longer wavelength than visible light. Meanwhile, shorter light is called ultraviolet rays.
  infrared detecting element
  It refers to an element that can detect infrared rays. Types of materials include indium antimonide (InSb), mercury cadmium telluride (3) (MCT), and (multilayer) quantum well infrared photodetector (QWIP).
  infrared camera with uncooled type
  It refers to devices that do not require the maintenance of a cooler, such as an infrared camera with cooled type. However, it is inferior to the infrared camera with cooled type in terms of its sensitivity, image quality, clarity, etc.when it is affected by internal heat.
  invisible light
  It refers to the light that is invisible to human eyes.
  infrared camera with cooled type
  Due to the features of the image sensor used, it is necessary to cool the sensor itself to nearly -200°C. Therefore, like infrared cameras with uncooled type, it can be said that it is less susceptible to thermal degradation of sensitivity and image quality such a case as infrared cameras with uncooled type. However, the cooler for cooling the sensor requires periodic maintenance and replacement.
• j
  joystick
  It refers to a rod-shaped jig that can move a device in any direction by interlocking with a microcomputer or its contact point, and is a type of switch.
  J-ALERT (Nationwide instant warning system)
  It refers to the transmission of weather-related information provided by the Japan Meteorological Agency and emergency-related information provided by the Cabinet Secretariat to local governments using artificial satellites. It also refers to a system for automatically activating the community wireless system using broadcast communications.

• l
  long-time recorder
  It refers to the recorder that can record more than 400 hours. In addition to recording in HDD device, recorded video can be managed via network.
  Landolt ring
  It refers to a target employed the alphabet of C, which is used while keeping rotation for visual acuity testing.
  laser
  It refers to a laser device that amplifies and emits lights, which are laser light and light beam. Laser light has excellent directivity and convergence, and the wavelength of the generated electromagnetic wave can be kept constant. There are infrared lasers, visible light lasers, ultraviolet lasers, and X-ray lasers, depending on the difference of the wavelength.
  laser-designator
  It refers to the main body of the device that emits laser light.
  laser with continuous irradiation type
  There are two types of lasers: continuous wave oscillation {operation} (CW) and pulsed operation (P). Continuous wave oscillation (CW) is a laser that oscillates continuously at constant output.
  
• m
  minimum illuminance level
  It refers to the lowest level of illumination to a subject that can be produce visualized images by a visible CCD camera.
• n
  near-infrared wavelength range
  It refers to the light that has a longer wavelength than visible light and is invisible to human eyes.
  NETD (Noise Equivalent Temperature Difference)
  It refers to the minimum detectable temperature difference or temperature resolution called, and is the minimum temperature difference that can detect the radiant temperature of an object while excluding the influence of noise. It can be said that the smaller the value, the higher the performance of cameras.
  number of pixels
  It is the resolution of the image sensor with the surveillance camera, and also refers to the result of the value which is multiplied by dots horizontally and vertically (the number of element of dots are ca. 300,000 pixels in horizontal 640 × vertical 480 dots).
• o
  optical cable transmission
  It refers to one of the wired transmission methods using optical cables. Through the propagation of video and control signals, it is possible to view video and to operate equipment in a remote location.
• p
  passive search system
  It refers to a non-irradiating system that senses the electromagnetic waves naturally emitted by the human body and produces images.
  pulsed laser irradiation
  It refers to a laser that repeatedly turns on and off of light at short intervals.
  pulse width
  It refers to lasers that repeatedly turn on and off. Pulse width refers to the time span of the laser irradiation.
  pitch (pitching)
  It refers to the rotation up and down in a direction of a vertical plane around the axis for left and right.
• r
  remote operation
  It refers that signals are transmitted to and controlled by surveillance cameras, including rotary bases, lenses, etc., installed in remote locations using multicore cables.
  resolution
  It refers to displaying an image on a monitor, and representing the image by the number of dots horizontally and vertically. (Horizontal 640 x vertical 480 dots, 1,024 x 768 dots)
  The resolution of printers and copiers is expressed in pixels with the equivalent value per inch.
  radar
  It refers to a device that clarifies the distance and direction to an target object by transmitting electromagnetic waves toward the object and measuring the reflected wave. The radar display unit can display the information of the target object in written text, or it can display the information by synthesizing topographical information already in the database on the monitor.
  roll(ing)
  It refers to the rotation left and right around the front-back axis.
• s
  salt-resistant coating
  It refers to a special coating that protects equipment mounted on vessels and electronic devices placed on the coast from salt damage. Depending on the degree of coating, there are heavy-duty salt-resistant coating and light-duty salt-resistant coating.
  5-axis stabilizer
  It has a dome-shaped anti-vibration device with a double structure, and refers to a device that prevents horizontal, vertical and rotational vibration by using an inner gimbal on the inside and further reduces horizontal and vertical vibration by using an outer gimbal on the outside.
  switchable bifocal lens
  It refers to a lens that can be used by switching between any two fixed focal points. It is compact compared with a zoom lens.
  S/N ratio
  It refers to one of the indicators of image quality performance. The higher the number, the better the image quality.
• t
  temperature resolution (for infrared cameras)
  It refers to the minimum temperature difference that can be converted into the video signals, because an infrared camera can convert the surface temperature difference of anything into such video signals and visualize them.
  → See the section on Noise Equivalent Temperature Difference.
  touch panel
  It refers to playing the role of switch operation in accordance with the display on the monitor screen after embedding a sensor panel on the monitor screen. Various control devices for surveillance cameras are controlled by a microcomputer through a liquid crystal touch panel.
  terahertz wave
  It refers to a type of electromagnetic wave. The length of the wavelength is 0.1 to 3 mm.