CRT multiformat camera

Details CRT multiformat camera CRT multiformat camera

1986-04-30

1987-11-24

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

346107R, 355 68, H04N 584

Patent

active

047092718

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to a CRT multiformat camera for photographing CRT images on CT (Computer Tomography) and ultrasound scanners.


BACKGROUND ART

A conventional camera for photographing CT and ultrasound scanner images called a "multiformat camera" photographs CRT images exposed on ortho-type medical imaging film. In the case of this film, its photographic images are viewed via transmitted light, requring a film hanging device with built-in fluorscent lamps called a "film viewing box". It is customary at any hospital to view the film while hanging it in the film viewing box. Therefore, inconvenience may be felt if there is no said box available near at hand. As an alternative, a Polaroid camera is widely used for photographing CRT images which are also easily developed. No film viewing box is required for viewing photographs taken by the Polaroid camera, becuase it uses reflected light images. However, the cost per image is high and photograph filing is very troublesome due to the one photograph per sheet format when compared with transmitted light photographs taken by said multiformat camera. Further, paper scraps are produced every time one photograph is developed. In order to remove this inconvenience, a multiformat camera for use with both film and photoprint has been invented. However, the large exposure sensitivity difference between film and photoprint requires the setting of appropriate independent photographic condtions. With conventional multiformat camera, the photographer must select the photographic conditions appropriate to the film or photoprint being used, which may cause a photographic failure due to incorrect choice of media and/or failure to select the appropriate photographic conditions.


DISCLOSURE OF INVENTION

The present invention solves the aforementioned technical problems relating to CRT multiformat cameras by enabling multiformat photography using transmitted light images onto conventional medical imaging film as well as reflected light images onto photoprint, thereby eliminating the need for a film viewing box through automatic selection of photographic conditions appropriate to the media used.
A feature of this invention to solve the above problems is that said CRT multiformat camera includes a photographing media discriminator which discriminates between photoprint and film and outputs a discriminating signal, and a photographing condition setting device which sets the photographic conditions appropriate to photographic media to the CRT camera according to the output signal of said photographing media discrimanator.


BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates a simplified configuration diagram of said CRT multiformat camera embodied in this invention;
FIG. 2 illustrates a block diagram of the camera's control system;
FIG. 3 is a conceptual diagram of the camera.


BEST MODE FOR CARRYING OUT THE INVENTION

Following is the detailed discription of one embodiment in this invention with reference to drawings.
FIG. 3 illustrates a conceptual diagram in which a camera is used to photograph four (4) frames on one photoprint or film. In this figure, a medical image projected on monitor television (hereinafter abbreviated to TV) 30 is exposed onto what is generally black-and-white photoprint or film F through lenses L1 to L4 installed on base 20. Photographic conditions such as brightness of CRT 31 on monitor TV 30 and shutter speed to shut off transmitted light through each lens, (described in detail later), are set to those in which a good gradient of light and shade is achieved so as to match photoprint--or film--sensitivity and automatic processor characteristics, whereupon images IM1 to IM4 projected one by one on the CRT are photographed on one print or film F using sequential shutter control. In this case, photographs are taken with the relative positions of the CRT image, lenses and photoprint or film being fixed. FIG. 1 illustrates a simplified configuration diagram of the CRT multiformat camera embodied in this invention, while FIG. 2, a block

REFERENCES:
patent: 4093375 (1978-06-01), Griesch et al.
patent: 4206465 (1980-06-01), Tamoto et al.
patent: 4264196 (1981-04-01), von Stein et al.
patent: 4278347 (1981-07-01), Okamoto et al.
patent: 4319281 (1982-03-01), Gall et al.
patent: 4627004 (1986-12-01), Cool et al.

Affiliated with

Also associated with

Rating

CRT multiformat camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CRT multiformat camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CRT multiformat camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2424993