X-ray television imaging using digital circular blanking

Details X-ray television imaging using digital circular blanking X-ray television imaging using digital circular blanking

1988-07-11

1989-11-28

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

358111, H05G 164

Patent

active

048842915

ABSTRACT:
A system and method using television for x-ray radiographic imaging is disclosed. The disclosure is directed to circuitry and technique whereby digital information for defining blanking time and active time for a given television scan format is stored in read only memory circuitry. In operation, the system blanks unwanted data, producing for active display only a circular image of predetermined size and location. Additional read only memory is used as lookup tables to scale the circular image size, or to alter its shape symmetrically about a center line.

REFERENCES:
patent: 4228465 (1980-01-01), Stone et al.
patent: 4355330 (1982-12-01), Fukui
patent: 4449195 (1984-10-01), Andrews et al.
patent: 4496985 (1985-07-01), Jensen et al.
patent: 4571619 (1986-02-01), Mewitz
patent: 4733313 (1988-03-01), Iyumita

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