How does the filter device in multi PROTECTOR speed up downloading time on visual imagery and improve the quality of facsimile transmissions?
Every communication line has some noise. If this noise becomes too great, then the information sent becomes corrupt. The system detects this and re-sends the information automatically. A filter removes this noise and so improves the download time. In a facsimile (fax) transmission, noise spoils the quality of the image. A filter acts to remove this.