JPS56119589A - Flicker preventing circuit of intermittent x-ray television - Google Patents

Flicker preventing circuit of intermittent x-ray television

Info

Publication number
JPS56119589A
JPS56119589A JP2224280A JP2224280A JPS56119589A JP S56119589 A JPS56119589 A JP S56119589A JP 2224280 A JP2224280 A JP 2224280A JP 2224280 A JP2224280 A JP 2224280A JP S56119589 A JPS56119589 A JP S56119589A
Authority
JP
Japan
Prior art keywords
signal
scanning lines
subjected
read
memory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2224280A
Other languages
Japanese (ja)
Inventor
Shunji Takahashi
Hiroshi Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Healthcare Manufacturing Ltd
Original Assignee
Hitachi Medical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Medical Corp filed Critical Hitachi Medical Corp
Priority to JP2224280A priority Critical patent/JPS56119589A/en
Publication of JPS56119589A publication Critical patent/JPS56119589A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

PURPOSE:To prevent flicker, by recording one-frame components of scanning lines with noninterlacing when the signal is stored in the digital memory and by reading every other scanning line in the first one field and reading rest scanning lines in the next field with interlacing at the reproducing time. CONSTITUTION:X-ray trigger signal (a) from control circuit 21 controls high voltage generator 15 to generate X rays from X-ray tube 11. Consequently, the fluoroscopic image of body 12 to be examined is subjected to image amplification in 13 to output the video signal. This signal is subjected to A/D conversion through LPF 16 and is stored in digital memory 18. At the reproducing time, the signal read from memory 18 is subjected to D/A conversion in 19, and the original analogue signal is applied to TV monitor 23 through LPF20. At the recording time for memory 18, one-frame components of scanning lines are recorded with noninterlacing; and at the reproducing time, every other scanning line is read in the first one field, and rest scanning lines are read with interlacing in the next field. As a result, flicker is prevented.
JP2224280A 1980-02-26 1980-02-26 Flicker preventing circuit of intermittent x-ray television Pending JPS56119589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2224280A JPS56119589A (en) 1980-02-26 1980-02-26 Flicker preventing circuit of intermittent x-ray television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2224280A JPS56119589A (en) 1980-02-26 1980-02-26 Flicker preventing circuit of intermittent x-ray television

Publications (1)

Publication Number Publication Date
JPS56119589A true JPS56119589A (en) 1981-09-19

Family

ID=12077317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2224280A Pending JPS56119589A (en) 1980-02-26 1980-02-26 Flicker preventing circuit of intermittent x-ray television

Country Status (1)

Country Link
JP (1) JPS56119589A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141138A (en) * 1982-02-18 1983-08-22 日本ハ−ゼン株式会社 X-ray three-dimensional image observing apparatus
JPS606502U (en) * 1983-06-22 1985-01-17 向井　義文 Device that records still images of X-ray transmission images
JPS63300743A (en) * 1987-05-31 1988-12-07 Shimadzu Corp Digital x-ray apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141138A (en) * 1982-02-18 1983-08-22 日本ハ−ゼン株式会社 X-ray three-dimensional image observing apparatus
JPS606502U (en) * 1983-06-22 1985-01-17 向井　義文 Device that records still images of X-ray transmission images
JPH0332136Y2 (en) * 1983-06-22 1991-07-08
JPS63300743A (en) * 1987-05-31 1988-12-07 Shimadzu Corp Digital x-ray apparatus

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