(19)
(11) EP 0 465 102 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.05.1992 Bulletin 1992/22

(43) Date of publication A2:
08.01.1992 Bulletin 1992/02

(21) Application number: 91305765.9

(22) Date of filing: 26.06.1991
(51) International Patent Classification (IPC)5: G09G 1/28, G09G 5/06
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 27.06.1990 US 544775
27.06.1990 US 545421
27.06.1990 US 544774
27.06.1990 US 545422

(71) Applicant: TEXAS INSTRUMENTS INCORPORATED
Dallas Texas 75265 (US)

(72) Inventors:
  • Van Aken, Jerry R.
    Sugar Land, TX 77478 (US)
  • Nye, Jeffrey L.
    Houston, TX 77099 (US)
  • Asal, Michael D.
    Sugar Land, TX 77479 (US)
  • Killebrew, Carrell R., Jr.
    Sugar Land, TX 77479 (US)
  • Guttag, Karl M.
    Missouri City, TX 77459 (US)

(74) Representative: Nettleton, John Victor et al
Abel & Imray Northumberland House 303-306 High Holborn
London, WC1V 7LH
London, WC1V 7LH (GB)


(56) References cited: : 
   
       


    (54) Palette devices selection of multiple pixel depths packing the entire width of the bus


    (57) A palette device (4000) controllable by a digital computer (110,120) with a video memory (130) having a bus (136) for supplying multiple color codes for the palette device in each bus cycle. The palette device (4000) includes a multiple-bit input (4011) for entry of the color codes from the bus (136) and a look-up table memory (4021) for supplying color data words in response to the color codes from the input (4011). color code transfer circuitry (4051) is connected between the input (4011) and the look-up table memory (4021) to supply the look-up table memory from the input sequentially with color codes of selectable width packing the entire width of the bus (136). Improved palette devices, graphics computer systems, facsimile systems, printer systems and other systems and methods are also disclosed.






    Search report