Method for transmitting pictures at a picture telephone transmission having limited bandwidth Patent #: 3976831
ApplicationNo. 05/877803 filed on 02/14/1978
US Classes:345/534, Memory access timing signals715/764On-screen workspace or object
ExaminersPrimary: Curtis, Marshall M.
Attorney, Agent or Firm
International ClassesG09G 5/34 (20060101)
G09G 5/22 (20060101)
Foreign Application Priority Data1977-02-14 JP
AbstractA data display control system for displaying respective data memorized in a plurality of refresh memories which is operable in various display modes including a selective picture display, a superimposed picture display and a shifting picture display. Individual data memorized in respective refresh memories contain each a display control bit adapted to determine whether or not the individual data are to be displayed on the screen. The data display control system reads out from the respective refresh memories a data information to be picture-displayed and only when the contents of a display control bit contained in the data information designate a display, it converts this data information into a video signal for a picture display. The contents of the display control bit are changeable for individual data.