Liquid crystal display device capable of selecting display defin

Details Liquid crystal display device capable of selecting display defin Liquid crystal display device capable of selecting display defin

1991-05-13

1992-12-01

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

358230, 358 56, G09G 336

Patent

active

051682702

ABSTRACT:
An input analog image signal is sampled by first and second A/D converters, using first and second sampling clocks of the same period, to obtain digital gradation data. In the case of a double definition display mode, the first and second sampling clocks are made 180.degree. out of phase with each other and the output of the first A/D converter is delayed for one-half period, by which its timing is brought into agreement with that of the output of the second A/D converter, thus obtaining a pair of digital gradation data. In the case of a standard definition display mode, the first and second sampling clocks of the same phase are used to obtain the outputs of the first and second A/D converters as a pair of digital gradation data. The pair of digital gradation data Da and Db is converted by a signal processing part into a pair of analog gradation data Aa and Ab, which is subjected to a serial-to-parallel conversion by a source driver to be supplied in parallel to data lines. In the double definition display mode the gate driver sequentially drives odd-numbered row lines in odd-numbered frames and even-numbered row lines in even-numbered frames. In the standard definition display mode every two adjacent row lines are simultaneously driven in a sequential order.

REFERENCES:
patent: 4568964 (1986-02-01), Doornhein
patent: 4745485 (1988-05-01), Iwasaki
Patent Abstracts of Japan, vol. 9, No. 277 (E355) (2000) Nov. 6, 1985 & JPA-60 120678, Jun. 25, 1955.
Patent Abstracts of Japan, vol. 7, No. 226 (E-202) Oct. 7, 1983 & JP-A-58 115991, Jul. 9, 1983.
Patent Abstracts of Japan, vol. 9, No. 75 (E-306) Apr. 4, 1985 & JP-A-59 208986, Nov. 27, 1984.

Affiliated with

Also associated with

Rating

Liquid crystal display device capable of selecting display defin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal display device capable of selecting display defin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display device capable of selecting display defin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-505046