公开(公告)号：JPH0887243A

公开(公告)日：1996-04-02

申请号：JP11185495

申请日：1995-05-10

Applicant: ESSILOR INT

Inventor： TEIERII RURUU ,  SHIYURISUTEIAN MATSUSAARU

IPC: G09G3/20 ,  G09G3/36 ,  G09G5/39 ,  G09G5/399 ,  H04N5/66

Abstract: PURPOSE: To convert an image from a black-and-white CCD camera to an image matched with an LCD type display matrix by alternately reading digital signals from the odd-number part and even-number part of a memory means and reconstructing the image suitable for the display matrix from the read signals. CONSTITUTION: A converter 16 processes a video signal received from a camera 12 and distinguishes effective data from field/scanning line synchronizing data. Then, the effective data are digitized by a converter 16. The effective data are written in the even-number part and odd-number part of a memory 17. Write is executed synchronously with the video signal. The data written in the even-number part and odd-number part of the memory 17 are simultaneously read out. At such a time, the data are not synchronized with the video signal but read out by a frequency having compatibility with the frequency of a graphic controller 18 for driving an LCD 14. Thus, the read data are used by the graphic controller 18 and displayed on a graphic picture.