Display system including an electrode matrix panel for scanning only scanning lines on which a moving display is written

• US 5,172,107 A
• Filed: 08/15/1991
• Issued: 12/15/1992
• Est. Priority Date: 11/26/1987
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Inoue, Hiroshi, Mizutome, Atsushi, Kanno, Hideo
• Primary Examiner(s): Brier, Jeffery A.
• Application Number:
  US07/745,400
• Time in Patent Office: 488 Days
• Field of Search: 340/706, 340/709, 340/710, 340/708, 340/765, 340/784, 340/811, 340/721, 340/734, 359/84, 359/85, 358/230, 358/236
• US Class Current: 345/100
• CPC Class Codes: G09G 2310/0227 related to multiple interlacing, i.e. involving more fields than just one odd field and one even field
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2310/06 Details of flat display driving waveforms
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 3/3629 using liquid crystals having memory effects, e.g. ferroelectric liquid crystals

Abstract

A display apparatus includes a display panel having a display picture area formed by scanning electrodes and data electrodes arranged in a matrix. A display data storage memory stores data supplied from a display data input device. A controller controls the display data storage memory to store the moving display data. The controller also supplies address data for designating only the scanning lines corresponding to the moving display data so as to control the electrode matrix to scan only the scanning lines on which the moving display data is written.

Claims

1. A display system, comprising:

(a) a display panel having an electrode matrix comprising scanning lines and data lines;

(b) a display data storage memory for storing display data supplied from a display data input device; and

(c) control means for, when display data supplied from the display data input device is moving display data, controlling the display data storage memory to store the moving display data and supply address data for designating only scanning lines corresponding to the moving display data so as to control the electrode matrix to scan only the scanning lines on which the moving display data is written.

2. A display system according to claim 1, wherein said display panel comprises a ferroelectric liquid crystal disposed between the scanning electrodes and data electrodes.

3. A display system, comprising:

(a) a display panel having an electrode matrix comprising scanning lines and data lines;

(b) a display data storage memory for storing display data supplied from a display data input device; and

(c) control means for, when display data supplied form the display data storage memory is static image display data or scrolling display data and image data inputted to the display data storage memory is cursor or mouse display mark data, storing address data for designating only scanning lines corresponding to the cursor or mouse display mark data, transferring the stored address data and controlling the electrode matrix so as to scan only the scanning lines on which the moving display data is written.

4. A display system according to claim 3, wherein said display panel comprises a ferroelectric liquid crystal disposed between the scanning electrodes and data electrode.