Title:
METHOD FOR DRIVING MATRIX VIDEO DISPLAY
Document Type and Number:
WIPO Patent Application WO/1997/013360
Kind Code:
A1
Abstract:
A method for driving a matrix video display by which a distortion-free picture is displayed according to video signals having an arbitrary aspect ratio. On the screen (7) of a first aspect ratio of the display, a first video display area (8) of a second aspect ratio where a picture is displayed according to video signals having the second aspect ratio and a second video display area (9) which is the other area than the first area (8) of the first aspect ratio are provided. The second area (9) is used for black display. Such timing of the vertical and horizontal clock signals N, Q that the aspect ratio of the first area (8) is equal to that of video signals H is adopted. The vertical scanning of the display (4) is such that the vertical scanning frequency of the second area (9) is higher than that of the first area (8). The horizontal scanning of the device (4) is such that the horizontal scanning frequency of the second area (9) is higher than that of the first area (8).
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Inventors:
TERAOKA KOJI (JP)
EMOTO FUMIAKI (JP)
KAWASHIMA HIDEYA (JP)
EMOTO FUMIAKI (JP)
KAWASHIMA HIDEYA (JP)
Application Number:
PCT/JP1996/002875
Publication Date:
April 10, 1997
Filing Date:
October 02, 1996
Export Citation:
Assignee:
MATSUSHITA ELECTRONICS CORP (JP)
TERAOKA KOJI (JP)
EMOTO FUMIAKI (JP)
KAWASHIMA HIDEYA (JP)
TERAOKA KOJI (JP)
EMOTO FUMIAKI (JP)
KAWASHIMA HIDEYA (JP)
International Classes:
G02F1/133; G09G3/36; H04N3/233; H04N5/66; (IPC1-7): H04N5/66
Foreign References:
| JPH01268272A | 1989-10-25 | |||
| JPH07255026A | 1995-10-03 | |||
| JPH05260418A | 1993-10-08 | |||
| JPH0678251A | 1994-03-18 | |||
| JPH0686193A | 1994-03-25 | |||
| JPH06167953A | 1994-06-14 | |||
| JPH0686241A | 1994-03-25 |
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