JPH03251891A - Display controller - Google Patents

Display controller

Info

Publication number
JPH03251891A
JPH03251891A JP2047281A JP4728190A JPH03251891A JP H03251891 A JPH03251891 A JP H03251891A JP 2047281 A JP2047281 A JP 2047281A JP 4728190 A JP4728190 A JP 4728190A JP H03251891 A JPH03251891 A JP H03251891A
Authority
JP
Japan
Prior art keywords
memory
gradations
conversion table
outside
gradation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2047281A
Other languages
Japanese (ja)
Inventor
Kingo Wakimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2047281A priority Critical patent/JPH03251891A/en
Publication of JPH03251891A publication Critical patent/JPH03251891A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent gradations from deviating from a set color code when a gradational display is made on a monochromatic display device by providing a color conversion table, a multi-bit memory which can be set from outside, and a gradation level selecting means.
CONSTITUTION: A display control part 2A includes a timing generator 20 - a gradation processing part 24 which are similar to conventional constitution and a memory 25 for gradation selection which is added to the color conversion table 22, and the processing part 24 is connected to the memory 25. When color codes of the conversion table 22 are as shown in a figure (a), the content of the memory 25 which can be arbitrarily designated from outside is set as shown in a figure (b). Therefore, when 1st - 4th and 5th - 8th colors can be classified by four gradations, the gradations are set as shown in a figure (c) according to their use frequencies and the four expected colors can be discriminated. When there is data which can not be discriminated on the screen of a monochromatic liquid crystal display device 5, the gradations can free be adjusted. Namely, the memory for two-gradation selection is provided in accordance with the color codes and set optionally from outside.
COPYRIGHT: (C)1991,JPO&Japio
JP2047281A 1990-03-01 1990-03-01 Display controller Pending JPH03251891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2047281A JPH03251891A (en) 1990-03-01 1990-03-01 Display controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2047281A JPH03251891A (en) 1990-03-01 1990-03-01 Display controller

Publications (1)

Publication Number Publication Date
JPH03251891A true JPH03251891A (en) 1991-11-11

Family

ID=12770910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2047281A Pending JPH03251891A (en) 1990-03-01 1990-03-01 Display controller

Country Status (1)

Country Link
JP (1) JPH03251891A (en)

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