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Bartlane System
The Bartlane system was a wirephoto technique invented in 1920 to transmit digitized newspaper images over submarine cable lines between London and New York. Named after its inventors Harry G. Bartholomew and Maynard D. McFarlane, it was the first digital imaging system ever invented. It was first used to transmit a picture across the Atlantic in 1921. Using the Bartlane system, images could be transmitted across the Atlantic in less than three hours. The images were initially coded with 5 gray levels, but this number was increased to 15 in 1929. At the transmitter, the pattern on the telegraph tapes were made using special printing devices and decoded into the image at the receiver using telegraph printers equipped with appropriate typeface A typeface (or font family) is a design of Letter (alphabet), letters, Numerical digit, numbers and other symbols, to be used in printing or for electronic display. Most typefaces include variations in size (e.g., 24 point), weight (e.g., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wirephoto
Wirephoto, telephotography or radiophoto is the sending of photographs by telegraph, telephone or radio. History Technologically and commercially, the wirephoto was the successor to Ernest A. Hummel's ''Telediagraph'' of 1895, which had transmitted electrically scanned shellac-on-foil originals over a dedicated circuit connecting the ''New York Herald'' and the ''Chicago Times Herald'', the ''St. Louis Republic'', the ''Boston Herald'', and the ''Philadelphia Inquirer''. Édouard Belin's Bélinographe of 1913, which scanned using a photocell and transmitted over ordinary phone lines, formed the basis for the Wirephoto service. In Europe, services similar to a wirephoto were called a Belino. The Bartlane system, invented by Harry G. Bartholomew and Maynard D. McFarlane, was a technique invented in 1920 to transmit digitized newspaper images over submarine cable lines between London and New York. and was first used to transmit a picture Transatlantic telegraph cable, across th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Imaging
Digital imaging or digital image acquisition is the creation of a digital representation of the visual characteristics of an object, such as a physical scene or the interior structure of an object. The term is often assumed to imply or include the processing, compression, storage, printing and display of such images. A key advantage of a digital image, versus an analog image such as a film photograph, is the ability to digitally propagate copies of the original subject indefinitely without any loss of image quality. Digital imaging can be classified by the type of electromagnetic radiation or other waves whose variable attenuation, as they pass through or reflect off objects, conveys the information that constitutes the image. In all classes of digital imaging, the information is converted by image sensors into digital signals that are processed by a computer and made output as a visible-light image. For example, the medium of visible light allows digital photog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry G
Harry may refer to: Television * ''Harry'' (American TV series), 1987 comedy series starring Alan Arkin * ''Harry'' (British TV series), 1993 BBC drama that ran for two seasons * ''Harry'' (New Zealand TV series), 2013 crime drama starring Oscar Kightley * ''Harry'' (talk show), 2016 American daytime talk show hosted by Harry Connick Jr. People and fictional characters *Harry (given name), a list of people and fictional characters with the given name, including **Prince Harry, Duke of Sussex (born 1984) *Harry (surname), a list of people with the surname Other uses *"Harry", the tunnel used in the Stalag Luft III escape ("The Great Escape") of World War II * ''Harry'' (album), a 1969 album by Harry Nilsson *Harry (derogatory term) Harry is a Norwegian derogatory term used in slang, derived from the English name Harry. The best English translation may be "cheesy" or "tacky". '' Norsk ordbok'' defines "harry" as "tasteless, vulgar". The term "harry" was first used by upper ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maynard D
Maynard may refer to: Names * Maynard (given name) * Maynard (surname) Places Canada * Maynard, Ontario, a village in Augusta Township United States * Maynard, Arkansas * Maynard, Iowa * Maynard, Kentucky * Maynard, Massachusetts * Maynard, Minnesota * Maynard, Ohio Other uses * ''Maynard'' (album), by Maynard Ferguson, 1981 * Maynard (software), a shell for Weston competing with the GNOME Shell * Maynard Electronics, an American company that manufactured tape drives in the 1990s * The Maynard School The Maynard School is a private selective day school for girls aged 4–18 in the city of Exeter in Devon. Founded in 1658, the school is the second oldest girls' school in the country, only predated by the Redmaids' High School in Bristol (1 ..., a girls' school in Exeter, UK * Maynard tape primer, a system for reloading muskets * Maynards, a sweets manufacturer in the United Kingdom See also * Justice Maynard (other) * '' Maynard v. Cartwright'', a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Imaging
Digital imaging or digital image acquisition is the creation of a digital representation of the visual characteristics of an object, such as a physical scene or the interior structure of an object. The term is often assumed to imply or include the processing, compression, storage, printing and display of such images. A key advantage of a digital image, versus an analog image such as a film photograph, is the ability to digitally propagate copies of the original subject indefinitely without any loss of image quality. Digital imaging can be classified by the type of electromagnetic radiation or other waves whose variable attenuation, as they pass through or reflect off objects, conveys the information that constitutes the image. In all classes of digital imaging, the information is converted by image sensors into digital signals that are processed by a computer and made output as a visible-light image. For example, the medium of visible light allows digital photog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transatlantic Telegraph Cable
Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. Telegraphy is a largely obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables. The Atlantic Telegraph Company led by Cyrus West Field constructed the first transatlantic telegraph cable. The project began in 1854 with the first cable laid from Valentia Island off the west coast of Ireland to Bay of Bulls, Trinity Bay, Newfoundland. The first communications occurred on August 16, 1858, but the line speed was poor. The first official telegram to pass between two continents that day was a letter of congratulations from Queen Victoria of the United Kingdom to President of the United States James Buchanan. Signal quality declined rapidly, slowing transmission to an almost unusable speed. The cable was destroyed after three weeks when Wildman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gray Level
In digital photography, computer-generated imagery, and colorimetry, a greyscale (more common in Commonwealth English) or grayscale (more common in American English) image is one in which the value of each pixel is a single sample representing only an ''amount'' of light; that is, it carries only intensity information. Grayscale images, are black-and-white or gray monochrome, and composed exclusively of shades of gray. The contrast ranges from black at the weakest intensity to white at the strongest. Grayscale images are distinct from one-bit bi-tonal black-and-white images, which, in the context of computer imaging, are images with only two colors: black and white (also called ''bilevel'' or ''binary images''). Grayscale images have many shades of gray in between. Grayscale images can be the result of measuring the intensity of light at each pixel according to a particular weighted combination of frequencies (or wavelengths), and in such cases they are monochromatic prope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Typeface
A typeface (or font family) is a design of Letter (alphabet), letters, Numerical digit, numbers and other symbols, to be used in printing or for electronic display. Most typefaces include variations in size (e.g., 24 point), weight (e.g., light, bold), slope (e.g., italic), width (e.g., condensed), and so on. Each of these variations of the typeface is a font. There are list of typefaces, thousands of different typefaces in existence, with new ones being developed constantly. The art and craft of designing typefaces is called type design. Designers of typefaces are called type designers and are often employed by type foundry, type foundries. In desktop publishing, type designers are sometimes also called "font developers" or "font designers" (a typographer is someone who ''uses'' typefaces to design a page layout). Every typeface is a collection of glyphs, each of which represents an individual letter, number, punctuation mark, or other symbol. The same glyph may be used for ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
