Title:
DIGITAL X-RAY TELEVISION PHOTOGRAPHING DEVICE
Document Type and Number:
Japanese Patent JPS6382081
Kind Code:
A
Abstract:
PURPOSE:To prevent an image from becoming out of focus and to improve the picture quality by providing a converting and repeating means which converts the transfer speed of data to a half and outputs the data, operating a television camera at a frame rate twice as fast as the arithmetic frame rate of an arithmetic memory part, and sending out data after A/D conversion to the arithmetic memory part through the converting and repeating means. CONSTITUTION:The intervals of the 1st vertical synchronizing signals V1 and V1 are set to 1/30 second and the synchronization of the arithmetic memory part 6 is controlled with the 1st vertical synchronizing signal V1. Then the intervals of the 2nd vertical synchronizing signals V2 and V2 are set to 1/60 second and the synchronism between the television camera 4 and an A/D converter 5 is controlled with the 2nd vertical synchronizing signal V2. Therefore, the television camera 4 and A/D converter 5 operate at the frame rate 60F/S twice as high as the arithmetic frame rate 30F/S of the arithmetic memory part 6. Therefore, image data processed by the arithmetic memory part 6 is displayed on a display part 7 as 30 picture per second. Consequently, the motion of the moving picture of a heart, etc., becomes smooth and excellent diagnostic information is obtained.
Inventors:
KAMIYA MASAMI
Application Number:
JP22587286A
Publication Date:
April 12, 1988
Filing Date:
September 26, 1986
Export Citation:
Assignee:
HITACHI MEDICAL CORP
International Classes:
H04N5/32; H04N7/18; A61B6/00; (IPC1-7): A61B6/00; H04N5/32; H04N7/18
Attorney, Agent or Firm:
Nishiyama Haruyuki