Patent ID: 6377271
Filing Date: 2002-04-23
Classification: H04N

Abstract:
An image data transferring system for transferring data from an image data transmitting apparatus to an image data receiving apparatus, said image data transmitting apparatus comprising;reduced data generating means for selectively generating reduced data by reducing the amount of data of continuously input image data; delta data generating means for generating delta image data of the difference between said input image data and said reduced data; delta detection means for detecting a delta between consecutive ones of said input image data; image data transmitting means for transmitting to said image data receiving means transmission data comprising first identifier data attached thereto indicating that it is said delta data when no delta is detected between consecutive ones of said input data for a predetermined period, and transmitting transmission data comprising second identifier data attached thereto indicating that it is said reduced data when a delta is detected between consecutive ones of said input data for a predetermined period; and image data receiving apparatus comprising transmission data receiving means for receiving said transmission data, and image displaying means for displaying an image indicated by said reduced data included in said transmission data when said second identifier data of the received transmission data indicates that it is said reduced data and displaying the image indicated by said reduced data with the image indicated by said delta data added thereto when said first identifier data of the received transmission data indicates that it is said delta data.