Patent · US Expired

Image display using liquid crystal display panel

US4775891A · kind A · utility

54Cited by
4References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 23, 1985
Grant dateOct 4, 1988
Priority date
Expiry dateAug 23, 2005

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG09G2310/027
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

An image display apparatus having an A/D converter which samples a television signal a plurality of times in each horizontal effective display period and converts the sampled signal into digital data, and a gradation signal generator combines gradation signals produced in a plurality of horizontal effective display periods according to the digital data to produce a new gradation signal. An image display panel is driven for display according to the new gradation signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.