Solid state fast frame recorder having independently selectable frame rate and exposure
First Claim
Patent Images
1. A solid state fast frame recorder comprising:
- solid state imager means for capturing images of an event and for producing image frame signals corresponding to said captured images;
means for selectively operating said imager means at different imager frame rates, wherein said exposure time of a captured image is equal to the reciprocal of the imager frame rate;
solid state memory means for storing image frame signals produced by said imager means; and
means for independently selecting said memory means to operate at a frame rate which is equal to or is a submultiple of said imager frame rate such that when said memory means is operated at a frame rate less than said imager means frame rate, said memory means stores only some of the image frame signals produced by said imager means.
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Abstract
A fast frame recorder which records images of an event at a fast frame rate and plays back the images at a slower frame rate to facilitate analysis of the event. The fast frame recorder includes a solid state imager and solid state memory for recording image frames captured by the imager. The exposure time and frame rate of the recorder are independently selectable, as long as exposure time does not exceed 1/frame rate.
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Citations
7 Claims
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1. A solid state fast frame recorder comprising:
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solid state imager means for capturing images of an event and for producing image frame signals corresponding to said captured images; means for selectively operating said imager means at different imager frame rates, wherein said exposure time of a captured image is equal to the reciprocal of the imager frame rate; solid state memory means for storing image frame signals produced by said imager means; and means for independently selecting said memory means to operate at a frame rate which is equal to or is a submultiple of said imager frame rate such that when said memory means is operated at a frame rate less than said imager means frame rate, said memory means stores only some of the image frame signals produced by said imager means. - View Dependent Claims (2)
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3. A fast frame recorder comprising:
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solid state imager means, having a plurality of photosites arranged in an array of rows and columns, for capturing an image of an event and for producing an image frame signal corresponding to said captured image by reading out blocks of parallel rows of photosites, said image frame signal including sequential blocks of video information, wherein each block of video information includes parallel lines of video signals; means for selectively reading out said integer means at different imager frame rates, wherein said exposure time of a captured image is equal to the reciprocal of the imager frame rate; solid state memory means for storing a plurality of image frame signals produced by said imager means; and means for independently selecting said memory means to operate at a frame rate which is equal or is a submultiple of said imager frame rate such that when said memory means is operated at a frame rate less than said imager means frame rate, said memory means stores only some of the image frame signals produced by said imager means. - View Dependent Claims (4, 5, 6)
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7. A solid state fast frame recorder comprising:
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solid state imager means for capturing images of an event and for producing a sequence of image frame signals corresponding to said captured images; solid state memory means coupled to said imager means for storing image frame signals produced by said imager means; and control means for selectively controlling said imager means to operate at a frame rate F to produce F image frame signals per second and for selectively controlling said memory means to operate at a frame rate F/m, where m is a positive integer greater than 1 and to store each F/m image frame signal produced by said imager means so that F/m image frame signals are stored per second and F-F/m image frame signals per second produced by said imager means are not stored by said memory means.
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Specification