Patent ID: 6369848
Filing Date: 2002-04-09
Classification: H04N

Abstract:
A picture data transmission device for use in the transmission of a picture in a television system, comprising:picture input means for receiving input of a picture signal; region extraction processing means for extracting, from a picture signal applied through said picture input means, a picture signal of a predetermined region in a picture frame of the picture in question; picture coding means for coding and outputting a picture signal of a region extracted by said region extraction processing means; and interface means for transmitting a coded signal obtained by coding by said picture coding means to a terminal device of other conference participant by means of predetermined transmission means; wherein said region extraction processing means out of a picture frame, extracts a picture signal of a target picture region containing a target picture and a picture signal of a part of a background region which is other region than the target picture region in question and transfers the signals to said picture coding means, and selects a part of said background region to be extracted from said picture signal such that the part varies with each picture frame.