Image
EAN-139786300181847   EAN-13 barcode 9786300181847
Product NameThis Island Earth [VHS]
LanguageEnglish
CategoryElectronics / Photography: A/V Media: Movie / TV
Amazon.comA Buy on Amazon ~ 6300181847
Price New9.89 US Dollars    (curriencies)
Price Used3.99 US Dollars    (curriencies)
CastJeff Morrow, Faith Domergue, Rex Reason, Lance Fuller, Russell Johnson
BindingVHS Tape
FormatClosed-captioned, Color, HiFi Sound, NTSC
Run Time87 minutes
Long DescriptionA mysterious, pilotless plane carries scientist Rex Reason to a colony of America's best and brightest minds. They've been kidnapped by a dying alien race, the Metalunians, to repair their defense shield before their enemies destroy their world completely, toiling under their spying eyes and futuristic security cameras (two-way TVs that dominate every room). Jeff Morrow, under a raised forehead, bronze tan, and snow-white hair, philosophizes as Exeter, the thoughtful Metalunian torn between his duty and his morals as he forces the plucky humans to labor in his race's defense. The moody mystery of the first half turns to pure pulp adventure when the humans are transported across the galaxy to the battle-scarred world of Metaluna, under the threatening watch of a monstrous bug-eyed monster with a giant brain for a head and massive claws for hands. There's a genuine sense of wonder to Joseph Newman's intergalactic adventure, one of the most ambitious science fiction films of the 1950s. The story is simple space opera, but the futuristic designs of glass and metal, the marvelous alien makeup, and grandstanding special effects invest the film with a Technicolor splendor. Faith Domergue co-stars as a nuclear physicist and Gilligan's Island 's Russell Johnson makes his first professorial appearance as a scientist. Science fiction auteur Jack Arnold was an unbilled codirector. --Sean Axmaker
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Created03-21-2013 5:36:35am
Modified05-01-2020 9:13:32pm
MD5a303e03a9b711fd7c3502c604c7a022a
SHA2560f2bcb060d8731ca89c5c95e40eb9e5640d8d680f7c8a3e25af27d070a03f104
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Query Time0.0132568

Article of interest

Barcodes are a graphical representation of information that can be easily read by machines. People read text easy enough but machines find this to be too complex so we use barcodes to simplify the process.

Barcodes can store numbers, letters and all the special characters. What can be stored in the barcode depends on which type of barcode is being used. But the basics of how a barcode works is the same regardless of what type of code it is, what information is stored in the barcode or what type of scanner is being used.

barcode scanIt all starts with the scan. The scanner, regardless of which type you are using, will examine the barcode image. The lines (or blocks in the case of 2D barcodes) will either reflect or absorb light. When we look at the barcode, we tend to see the dark stripes and think of those as the important parts. Those are the parts that absorb the light and the white parts reflect the light. So the scanners tend to see the barcodes in reverse of how we think of them. But the dark and light portions of the code on their own don't automatically become the information stored in the code. In most cases, it is the relative placement and size of each dark and light stripe (or block) that make up the information. There are also special markers that help the scanner know which direction the barcode is facing when it is scanned. This allows the scanning process to work even if the barcode is upside down when it is scanned. The scanner simply processes the scanned data in reverse in this case.

barcode oscolloscopeTaking a look at an oscolloscope screen as a scanner passes over barcode, you can see that the stripes reflect back light and the scanner registers the changes as high and low levels. So what looks like a simple image is really a rather complex set of layered encryption to store the data. The encryption isn't done to hide the information in this case. Instead it is done to make it easy for the machine to read the information. Since the base language of machines is binary (1 and 0) it is easy for them to read this type of information even if it takes several steps to turn this back into something that people can understand.

binaryThe size of each high and low are combined to make binary data. A series of 1 (one) and 0 (zero) values which are strung together then decoded into the actual information. Up to this point, the process is the same for all barcodes regardless of how they are stored. Getting the lines or dots into binary is the easy part for the machine. The next step is to make this binary code into something useful to people. That step depends on  which type of barcode is being scanned. Each type of barcode has its own encoding methode. Just like human languages, what seems to be two similar words (or barcodes in this case) could actually be two very different values even though they have the same basic letters (or bars).

So you can see that the scanning devices need to know not only how to turn the bars or dots into binary, but after they have done that they need to know how to turn that binary string into the original information. But regardless of the encoding process the basic steps are the same. Process the light and dark areas, convert them to binary, decode the binary, pass the information on to the receiving device which is normally a computer program of some sort.

Once the decoded data reaches the computer program, there is no telling how the information is to be used. The grocery store will use the information to keep track of the products you purchased as you go through the register. A manufacturer will use the code to identify where they are storing their parts. And shipping companies use the codes to keep track of the packages they are delivering.

Now that you know a little about the mechanical portion of the process, take some time to learn about the different types of barcode scanners and the different ways the information can be encoded into barcodes.

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