Patent ID: 6603465
Filing Date: 2003-08-05
Classification: G05B

Abstract:
A robot controller, in which a display unit is separated from the body of said robot controller, and said body of the robot controller and said display unit being connected to each other through a twisted pair line or a coaxial cable,said body of the robot controller having: a graphic control circuit; a first latch circuit to latch image data transmitted from said graphic control circuit by a quantity corresponding to several pixels; a first RAM to sequentially store image data corresponding to the several pixels latched by said first latch circuit; a driver to sequentially transmit, to said twisted pair line or said coaxial cable, the image data corresponding to several pixels stored in said first RAM; and a control circuit to control the latching of the image data to be performed by said first latch circuit, writing and reading of the image data to and from said first RAM and transmission of the image data corresponding to several pixels from said first RAM to said twisted pair line or said coaxial cable by said driver; said display unit having: a receiver connected to said twisted pair line or said coaxial cable; a second RAM to sequentially store the image data for several pixels received by said receiver and transmitted by said driver; a second latch circuit to latch the image data for several pixels read from said second RAM and to transmit image data for one pixel at a time to a display; said display; and a control circuit to control writing and reading of the image data for several pixels supplied from said receiver on and from said second RAM, latching of the image data for several pixels to be performed by said second latch circuit, and to separate and transmit image data for one pixel from the image data for several pixels latched by said second latch circuit so that high speed serial communication can be performed.