When was the scanner invented, the role and history of the scanner

In 1984, Microtek launched the world's first desktop optical monochrome image scanner in Las Vegas, USA.

1985Launched the world's first 300dpi desktop optical black-and-white image scanner.

1986Launched the world's first desktop flatbed black-and-white image scanner.

A scanner is a device that uses photoelectric technology and digital processing technology to convert graphic or image information into digital signals by scanning. It is usually used in external instruments and devices of a computer to capture images and convert them into digital input devices that can be displayed, stored, and output by a computer.

In 1884, the German engineer Nipco invented the scanner. In 1987, the handheld Bizhi scanner was introduced. In the early 90s of the 20th century, the feed-leaf paper scanner appeared. Flatbed scanners were born in 1984 and are the mainstream products of office scanners.

The direct inventor of the CT scanner is Hausfeld, but its invention process is the result of painstaking exploration and unremitting efforts by many scientists.

In medicine, people have figured out why X-rays pass through the human body, and the black shadow of bones appears on the screen. Therefore, through X-rays, the doctor can understand the condition of the patient's bones and some hard foreign bodies in the body. Three months after its birth, X-rays were used for the first time in Vienna Hospital to take images of the human body.

Since then, hospitals around the world have started using X-rays.

In 1955, Cormac, an American physicist, was hired to work in the radiology department of a hospital in Cape Town, South Africa. At the hospital, Cormac soon became interested in radiology** and diagnosis of cancer. When he discovered that doctors at the time were treating heterogeneous human bodies as if they were homogeneous when calculating radiation doses, "how to determine the appropriate radiation dose" became a difficult problem that Cormac was determined to overcome.

Finally, Cormac argues that in order to improve the programming of radiology, it is necessary to show the anatomy and compositional characteristics of the human body in a series of cross-sectional diagrams. He experimented with objects of various materials and shapes, up to mannequins, and carried out theoretical calculations. After nearly 10 years of hard work, Cormac finally solved the theoretical problem of computed tomography technology.

In 1963, Cormac first proposed the use of X-ray scanning for image reconstruction and proposed an accurate method of numerical extrapolation. He laid the foundation for the birth of the CT scanner.

Unlike Cormac, the British scientist Hausfeld has been engaged in the study of engineering technology. In 1951, he was hired to engage in research work in the electrical and musical instrument industry, trying to apply radar technology to industrial production and meteorological observation. Soon after, he moved on to the design of electronic computers.

The patient is being examined on a CT machine.

At that time, in addition to computers, the electrical and musical instrument industry where he worked also produced electronic instruments such as detectors and scanners. Hausfeld's goal was to combine these technologies to produce new instruments with greater practical value. Cormac's research results have given him great inspiration and confidence.

On the basis of the research of Cormac et al., Hausfeld chose the CT machine as the research topic. Fortunately, he is familiar with the principles and application of computer technology, and the mathematical processing method of CT image reconstruction can be properly combined with the computer technology he is familiar with, so the problems in the development are quickly solved.

In 1969, Hausfeld finally designed a clinically usable tomography device, which was officially installed in a London hospital in September 1971.

In 1884, the German engineer Paul Gottlieb Nipkow invented a mechanical scanning device using selenium photocells, which was used in later early television systems, and by 1939 the mechanical scanning system was obsolete. Although it is not necessarily related to the computer-operated scanner more than 100 years later, it is historically the earliest scanning technology used in human history.

The scanner is an optical mechatronics product that only appeared in the mid-80s of the 19th century, which is composed of a scanning head, a control circuit and mechanical parts. Using progressive scanning, the resulting digital signal is saved in the form of a dot matrix, and then it is stored on disk in a standard format using file software.