Details:
Summary:
Rapicom, Inc. has developed a system to transmit press ready film for remote printing of high quality images including 150 line screen color magazine separations. The major components of the system will be described with particular detail given to those areas which are unique or where the system has an advantage over existing technologies. The input uses a drum scanner with a helium neon scanning spot and a focused detector to avoid some of the effects of spot flair. The output is also a drum scanner which uses a helium argon laser to expose film and has multiple resolution capability from 600 scan lines per inch to 1200 scan lines per inch. The major components of the system will be described with particular detail given to those areas which are unique or where the system has an advantage over existing technologies. The input uses a drum scanner with a helium neon scanning spot and a focused detector to avoid some of the effects of spot flair. The output is also a drum scanner which uses a helium argon laser to expose film and has multiple resolution capability from 600 scan lines per inch to 1200 scan lines per inch. The transmission system uses data compression with an adaptive run length compression algorithm. The algorithm will be compared to Huffman and other algorithms. The communications system uses selective block repeat synchronous transmission. The system uses selective block repeat synchronous transmission. The system has the capability for full communications error control when transmitting to multiple receivers over a wide variety of communications circuits. It can transmit simultaneously to locations on three different continents through multiple satellite circuits.