0
The pantelegraph (Italian: pantelegrafo; French: pantélégraphe) was an early form of facsimile machine transmitting over normal telegraph lines developed byGiovanni Caselli, used commercially in the 1860s, that was the first such device to enter practical service. It used electromagnets to drive and synchronize movement of pendulums at the source and the distant location, to scan and reproduce images. It could transmit handwriting, signatures, or drawings within an area of up to 150 x 100mm.
Édouard Belin's Belinograph of 1913, scanned using a photocell and transmitted over ordinary phone lines, formed the basis for the AT&T Wirephoto service. In Europe, services similar to a wirephoto were called a Belino. It was used by news agencies from the 1920s to the mid-1990s, and consisted of a rotating drum with a single photodetector at a standard speed of 60 or 120 rpm (later models up to 240 rpm). They send a linear analog AM signal through standard telephone voice lines to receptors, which synchronously print the proportional intensity on special paper. Color photos were sent as three separated RGB filtered images consecutively, but only for special events due to transmission costs.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoThe first image scanner ever developed was a drum scanner. It was built in 1957 at the US National Bureau of Standards by a team led by Russell Kirsch. The first image ever scanned on this machine was a 5 cm square photograph of Kirsch's then-three-month-old son, Walden. The black and white image had a resolution of 176 pixels on a side.
Wiki User
∙ 13y agoMuhammad Salik bin Zaheer of India was the mastermind behind the invention of the image scanner that we use today in our daily life.
Wiki User
∙ 9y agoRay Kurzweil invented the first image scanner in 1997. The image scanner is a way of copying things with more detail.
Wiki User
∙ 9y agoThe inventor of the image scanner is Ray Kurzweil. Kurzweil was born in Queens, New York in 1948 and received his education at MIT. He currently works as a director of engineering at Google.
Wiki User
∙ 16y agoWho invented scanners
Add your answer:
Earn +20 pts
How are police scanners and computer scanners different?
Police scanners check for police radar beams so that a person knows whether or not they are being monitored. A computer scanners scans a physical document and makes it into a computer document.
Types of computer scanners?
There are 3 types of scanners currently being sold on the market. These scanners are photo scanners, paper fed scanners, and hand held scanners.
Which year were bar code scanners invented?
invented in 1952
How Have Scanners Evolved?
There are various ways in which computer scanners have evolved over the years. For example, they have gotten more compact.
Where are computer scanners used?
Anywhere, and by anyone, who wants to scan an image into a computer. =D
Do scanners only connect to newer computers?
Scanners will connect to most any computer that has a USB connection, these days. Older scanners may only connect to computers with a parallel port, however.
What does a dentist use?
they use scanners and computer! snd teeth brushurs!
Is the computer invented or not?
Yes, the computer is invented.
Are scanners an input or output device?
Scanners are input devices. They take the data from text or photos and convert it to information the computer can use. Scanners are often a part of combination devices that include printers, and printers are output devices. The scanner portion sends what is on the page to the computer, and the printer portion takes what is in the computer and provides output in the form of a printed page.
Number of PET scanners in Germany?
79 PET (Positronen-Emissions-Computer-Tomographen) scanners in 2007 according to http://www.gbe-bund.de Buzze
What are the four example of computer accessories?
Printers, speakers, scanners, headsets etc.
Do computer scanners need ink to scan photographs?
scanners dnt use ink as no output is formed in the form of hard copy , these just form the image
