Title:
【発明の名称】平面表示板の駆動装置
Document Type and Number:
Japanese Patent JP2679373
Kind Code:
B2
Abstract:
PURPOSE:To execute specified display while keeping a brightness balance between screens by constituting a device so that scanning is successively performed in a different scanning cycle every screen and display data is outputted by timing to the scanning. CONSTITUTION:This device is provided with one or plural memories(S-RAM) 5 which store the screen data of every screen having a different display state such as display by plural emitted light colors or graphic and segment display, and a control part which segments or divides the space of the memory and writes the display data in the memory 5. Then, a function for reading out the display data on every screen by switching the space of the memory in order and accessing the data which is written after it is segmented or divided and transmitting it to anode drivers 11 and 16 provided for every screen, and a control part which actuates the grid drivers 12 and 17 for every screen in the different cycles are provided. Then, the scanning is successively performed in the different scanning cycle every screen and the display data is outputted by timing to the scanning. Thus, the specified display is executed on a multicolor fluorescent display tube or a composite fluorescent display tube while keeping the brightness balance between the screens.
Inventors:
Ryoichi Arai
Application Number:
JP21558290A
Publication Date:
November 19, 1997
Filing Date:
August 15, 1990
Export Citation:
Assignee:
NEC
International Classes:
G09G3/30; G09G3/20; G09G5/00; (IPC1-7): G09G3/30; G09G5/00
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)