(19)
(11) EP 0 526 989 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.02.1994 Bulletin 1994/05

(43) Date of publication A2:
10.02.1993 Bulletin 1993/06

(21) Application number: 92306235.0

(22) Date of filing: 07.07.1992
(51) International Patent Classification (IPC)5: G09G 5/06
(84) Designated Contracting States:
DE FR GB

(30) Priority: 12.07.1991 JP 172123/91

(71) Applicant: PIONEER ELECTRONIC CORPORATION
Meguro-ku Tokyo-to (JP)

(72) Inventors:
  • Ayukai, Yasushiro, c/o Pioneer Electronic Corp.
    Kawagoe-shi, Saitama-ken (JP)
  • Yamauchi, Keiichi, c/o Pioneer Electronic Corp.
    Kawagoe-shi, Saitama-ken (JP)

(74) Representative: Brunner, Michael John 
GILL JENNINGS & EVERY Broadgate House 7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB)


(56) References cited: : 
   
       


    (54) Display control device


    (57) In a display control device for controlling a display unit (D), a controller (101) receives a control signal from an external device and generates a data change signal from the control signal. A picture data storage unit (102) stores picture data to be displayed. A color pallet unit (103) stores pallet data corresponding to displayable colors of the display unit and outputs the pallet data on the basis of the picture data stored in the picture data storage unit. A pallet data updating unit (104) gradually updates a part or all of the pallet data in the color pallet unit on the basis of the data change signal. A signal conversion circuit (105) converts the updated pallet data into display signals and outputs the display signals to the display unit.






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