Showing papers on "Video quality published in 1978"
Patent•
25 May 1978
TL;DR: In this paper, the video signal is obtained from the television camera controller 10, to pick up the photo signal in the field of photo measurement of the photo multiplier 8, and the ratio of the part shaded with the electronegative contrast media to the video signals is detected, to detect the ratio in the part actually incident with light to the full photo measurement field in area ratio.
Abstract: PURPOSE: To obtain the picture having excellent video quality, by preventing halation in case of fluoroscopy and preventing the excessive exposure for the parts other than those covered with the electronegative contrast media in case of pick up. CONSTITUTION: Video signal is obtained from the television camera controller 10, to pick up the video signal in the field of photo measurement of the photo multiplier 8, the ratio of the part shaded with the electronegative contrast media to the video signal in the field of full photo measurement is detected, to detect the ratio of area of the part actually incident with light to the full photo measurement field in area ratio, and the correction circuit 31 outputting this ratio as the corrective component for the output of the photo multiplier 8 is provided. The correction signal of the correction circuit 31 is given to the automatic exposure controller 12 to correct the detected output of the photo multiplier 8. COPYRIGHT: (C)1979,JPO&Japio
4 citations
Patent•
13 Dec 1978
TL;DR: In this paper, the authors proposed a method to sharpen the video quality with video quality compensation with scanning speed modulation, to prevent the production of excessive beam current for CRT, to eliminate blooming, and to improve the profile of video lines.
Abstract: PURPOSE:To sharpen the video quality with the video quality compensation with scanning speed modulation, to prevent the production of excessive beam current for CRT, to eliminate blooming, and to sharpen the profile of video lines
2 citations