. Bell telephone magazine . ina or mosaic of light sensitive elements which would sendan appropriate electrical signal from each small element of theimage upon it. There have not been wanting inventors who have proposedto do just this thing, that is, to build what are called multi-channel picture transmission systems. The number of elec-trical conductors required is, however, so enormous for a pic-ture containing any useful amount of detail that such systemshave, by general consent, been agreed to be quite impractica-ble. Instead, all picture and image transmitting systems whichhave met with a
. Bell telephone magazine . ina or mosaic of light sensitive elements which would sendan appropriate electrical signal from each small element of theimage upon it. There have not been wanting inventors who have proposedto do just this thing, that is, to build what are called multi-channel picture transmission systems. The number of elec-trical conductors required is, however, so enormous for a pic-ture containing any useful amount of detail that such systemshave, by general consent, been agreed to be quite impractica-ble. Instead, all picture and image transmitting systems whichhave met with any success, have done with signals originated bylight from a picture exactly what we do with signals originatedby sound; that is, they send them over the communicationchannel in sequence, that is, one after another. Thus to illus-trate from Figure 1, the light signal originated by the small ele-ment in the upper left-hand corner is transmitted first, then thesignal from the next adjacent element to the right followed by 120.
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922
