Television camera control in radiation imaging

Claim 2

A medical diagnostic television imaging system comprising: (a) a source for propagating x-rays along a path; (b) an image intensifier spaced form the source and interposable in said path, said intensifier being responsive to x-radiation incident thereon to produce a visible light image corresponding to said incident radiation; (c) a video camera positionable to view said visible light image and having a target and means for scanning said target for producing a video signal representing a viewed portion of said visible light image, along with sync signals; (d) a monitor coupled to receive said video and sync signals for producing a television image corresponding to said visible light image; (e) means associated with said video camera for controlling said video camera to scan at a selected one of a plurality of scan rates, and (f) circuitry coupled to said camera and said controlling means for suppressing said video signal in response to the selection of at least one of said plurality of scan rates, the suppression of video signal taking place during the entire duration of selection of said one of said scan rates.

Claim 3

The system of claim 1, further comprising; means for maintaining transmission of said sync signals to said monitor simultaneously with said suppression of said video signal.

Claim 4

A medical diagnostic television method comprising the steps of: (a) propagating x-rays along a path; (b) producing, in response to x-radiation, a visible light image corresponding to said radiation; (c) viewing said visible light image with a video camera having means for scanning a target and for producing a video signal representing a video portion of said visible light image and for producing synchronization signals; (d) producing by use of a monitor a television image corresponding to said visible light image; (e) controlling said video camera to scan at a selected one of a plurality of scan rates, and (f) suppressing said video signal in response to selection of at least one of said plurality of scan rates for the entire duration of said selection.

Claim 5

A medical diagnostic television method comprising the steps of: (a) propagating x-rays along a path; (b) producing, in response to x-radiation, a visible light image corresponding to said radiation; (c) viewing said visible light image with a video camera having means for scanning a target and for producing a video signal representing a video portion of said visible light image and for producing synchronization signals; (d) producing by use of a monitor a television image corresponding to said visible light image; (e) controlling said video camera to scan at a selected one of a plurality of scan rates, and (f) suppressing said video signal in response to selection of at least one of said plurality of scan rates for the entire duration of said selection.

Claim 6

The method of claim 3, further comprising the step of: maintaining transmission of said synchronization signals to the monitor simultaneously with the performance of said video signal supressing step.

Claim 7

A medical diagnostic television imaging system comprising: (a) a source for propagating x-rays along a path; (b) an image intensifier spaced from the source and interposable in said path, said intensifier being responsive to x-radiation incident thereon to produce a visible light image corresponding to said incident radiation; (c) a video camera positionable to view said visible light image and having a target and means for scanning said target for producing a video signal representing a viewed portion of said visible light image, along with synchronization signals; (d) a monitor coupled to receive said video and synchronization signals for producing a television image corresponding to said visible light image; (e) means associated with said video camera for controlling said video camera scan at a selected one of a plurality of said scan rates, and (f) circuitry coupled to said camera and said controlling means for suppressing transmission of said video signal from said camera to said monitor subsequent to its generation in response to the selection of at least one of said plurality of scan rates, and for transmitting said video signal from said camera to said monitor in response to selection of another of said plurality of scan rates.

Claim 8

A medical diagnostic television imaging system comprising: (a) a source for propagating x-rays along a path; (b) an image intensifier spaced from the source and interposable in said path, said intensifier being responsive to x-radiation incident thereon to produce a visible light image corresponding to said incident radiation; (c) a video camera positionable to view said visible light image and having a target and means for scanning said target for producing a video signal representing a viewed portion of said visible light image, along with synchronization signals; (d) a monitor coupled to receive said video and synchronization signals for producing a television image corresponding to said visible light image; (e) means associated with said video camera for controlling said video camera scan at a selected one of a plurality of said scan rates, and (f) circuitry coupled to said camera and said controlling means for suppressing transmission of said video signal from said camera to said monitor subsequent to its generation in response to the selection of at least one of said plurality of scan rates, and for transmitting said video signal from said camera to said monitor in response to selection of another of said plurality of scan rates.