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US 4,736,250 AGranted
Digital camera frame capture circuit
AssigneeTektronix, Inc.
InventorStephen F. Blazo
Life of this patent
Estimating the term…
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AssigneeTektronix, Inc.
InventorStephen F. Blazo
Estimating the term…
A frame capture circuit for use with a video camera includes an analog-to-digital converter for converting composite video to digital form and a memory for storing sequential frames of digital video. The analog-to-digital converter is connected to the memory through a summer, and the memory has an output connected to a second summer input through a feedback loop. The feedback loop includes a switch controlled by a central processing unit such that when the switch is closed, the output of the memory is a composite video data frame comprising a current plus a previous frame of data. The central processing unit closes the switch whenever an event of interest displayed on an external device falls near the end of a frame of video generated by the camera so that the entire event is captured without regard to the scanning phase of the video camera.
A frame capture circuit for a video camera, said camera providing a video output at a predetermined frame repetition rate, comprising:
In combination with a video camera adapted for photographing images on a visual display screen and for providing an output comprising sequential frames of video data, a frame capture circuit comprising:
A method of capturing a transient event appearing on a visual display screen comprising the steps of:
Dependencies are inferred from the claim text.