Eastman-kodak Company

James R Koudelka

Jeffery Richard Hawver

Andrea S Rivers

Constantine N Anagnostopoulos

Cynthia S Bell

Michael J Gaboury

Joel D Decaro

Paul M Williams

A film scanner is disclosed including a linear image sensor moveable to a scan position for scanning lines of image frames of an elongated film having a series of edge perforations including a reference perforation for each image frame. The film scanner further includes a rotating film gate for supporting the film in the scan position wherein the rotating film gate includes a rotatable encoder for producing an encoder signal indicative of the position of the film as it passes through the rotating film gate, a film transport mechanism for advancing the film through the rotating gate, a perforation detector mounted relative to the scan line of the image frame located at the scan position for producing hop and weave signals in response to detection of the reference perforation, a sensor transport assembly mounted relative to the rotating film gate and moveable in a weave direction, and including means for mounting the image sensor for movement in the weave direction, and signal processing means responsive to the weave signal for causing the sensor transport assembly to move the linear image sensor in the weave direction to align the linear image sensor with the image frame associated with the reference perforation, and further including means responsive to the hop signal and the encoder signal for producing a start scan signal.

Film scanning apparatus with motorized weave correction

A film scanner is disclosed including an image sensor moveable to a scan position for scanning image frames of an elongated film having a series of edge perforations including a reference perforation for each image frame. The film scanner further includes an intermittent film transport mechanism for moving an image frame to a scanning position, and a sensor transport assembly mounted relative to the intermittent film transport mechanism and moveable in hop and weave directions. The sensor transport assembly includes a structure for mounting the image sensor for movement in the hop and weave directions, a detector mounted relative to the image sensor for detecting the reference perforation and for producing hop and weave signals, and circuitry responsive to the hop and weave signals to move the sensor transport assembly in the hop and weave directions to align the detector over the reference perforation, so that the image sensor is aligned with the image frame so that the image frame can be scanned.

Film scanning apparatus

In the present invention there is provided a plurality of photosensitive elements arranged in a symmetrical pattern around a central circular area. The area surrounding the central area is formed of a square area having the circular area at its center with the square area divided into four equal quadrants. The next area is rectangular in shape and surrounds the second area. The rectangular area is formed in four equal sections with each of the corners of the square area lying along two adjacent edges of the rectangular areas. A selection means is provided for selecting the output signal from any one the photodiodes or for selecting the output signals from any combination of two or more of the photodiodes so as to accentuate the responsiveness of the light meter to a selected area or feature of the image to be photographed.

Multiple photodiode array for light metering

Growing community of inventors

Williamson, NY, United States of America

James R Koudelka