The history of digital cameras can be traced back to the 1940s and 1950s, when television appeared at that time. With the promotion of television, people need a device that can record the TV programs being broadcast. In 1951, Bin Crosby Lab invented the VTR, a new machine that records current pulses from television broadcasts onto tape. By 1956, the video recorder began mass production. At the same time, it was quickly seen as an electronic imaging technology.
The second milestone occurred in NASA in the 1960s. Before the astronauts are sent to the moon, NASA must survey the surface of the moon. However, engineers found that the analog signal sent back by the detector was trapped in other rays in the universe, and the receiver on the ground could not turn the signal into a clear image. So the engineers had to find another way. 1970 was a milestone in the image processing industry, and Bell Labs invented the CCD. When the engineer uses the computer to digitally process the image information obtained by the CCD, all the interference information is eliminated. Later, the "Apollo" moon landing ship was equipped with a device using a CCD, which is the prototype of a digital camera. During the "Apollo" landing on the moon, the digital image received by NASA was crystal clear.
After that, digital image technology developed faster, mainly due to technological competition during the Cold War. These technologies are also mainly used in the military field, and most spy satellites use digital image technology.
In the history of the development of digital cameras, Sony has to be mentioned. In August 1981, Sony first used a CCD in a television camera as a sensor that directly converted light into a digital signal. Sony's annual production of CCDs accounts for 50% of the global market, which is one reason why Sony can stand out in the digital camera market, because the core lifeblood is in its own hands.
After the end of the Cold War, military technology quickly changed into market technology. In 1995, Kodak, which manufactures traditional cameras and has powerful film production capacity, released its well-developed civilian consumer digital camera DC40 to the market. This is seen by many as the beginning of the digital camera market. The DC40 uses 4MB of internal memory and cannot use other removable storage media. Its 380,000-pixel CCD supports 756×504 images and is compatible with Windows 3.1 and DOS. Apple's QuickTake 100 is also available on the market. Both cameras provided a serial port connection to the computer.
After that, digital cameras have been springing up by camera manufacturers. The CCD's pixels are constantly increasing, the camera's functions are constantly being refurbished, and the image quality is closer and closer to that of traditional cameras.
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