Systems and methods of transforming a film signal into a video signal

• US 9,246,423 B2
• Filed: 01/16/2008
• Issued: 01/26/2016
• Est. Priority Date: 05/30/2005
• Status: Active Grant

• Current Assignee: Yoshisuke Kuramoto
• Original Assignee: Yoshisuke Kuramoto
• Inventors: Kuramoto, Yoshisuke
• Primary Examiner(s): Tiv, Backhean
• Application Number:
  US12/015,462
• Publication Number:
  US 20080117293A1
• Time in Patent Office: 2,932 Days
• Field of Search: 348/97
• US Class Current: 1/1
• CPC Class Codes: H02P 8/00 Arrangements for controlling dynamo-electric motors rotating step by step
• CPC Class Codes: H04N 5/253 Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine scanning details therefor H04N3/36 ; standard conversion therefor H04N7/0112
• CPC Class Codes: H04N 7/0112 one of the standards corresponding to a cinematograph film standard
• CPC Class Codes: H04N 7/0127 by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter

Abstract

An exemplary system has circuitry that receives a first signal, the first signal being generated responsive to a user control for a play speed of a film. The system also includes circuitry that receives a second signal, the second signal being synchronized with a video camera that generates television signals. Circuitry processes the first signal with the second signal, to generate a third signal. Responsive to the third signal, the exemplary system moves a relative position of the film with respect to the video camera, to generate a video signal.

Claims

1. A method of converting light signals from a film into a video signal, the method comprising the steps of:

receiving a first signal, the first signal being generated responsive to a user control for a play speed of a film, the first signal including a plurality of first-signal pulses;

receiving a second signal, the second signal being synchronized with a video camera that generates television signals, the second signal including a plurality of second-signal pulses;

processing the first signal with the second signal, to generate a third signal, the third signal including a plurality of third-signal pulses, each third-signal pulse corresponding to a respective one of the first-signal pulses, each third-signal pulse being synchronized with a second-signal pulse, each first-signal pulse corresponding to a respective one of the third-signal pulses, whereby there is a one-to-one correspondence between the first signal pulses and the third signal pulses; and

responsive to the third signal, moving a relative position of the film with respect to the video camera, to generate a video signal.

2. The method of claim 1 further including

generating the second signal by receiving a video signal from the video camera, to generate a vertical synchronizing signal.

3. The method of claim 1 further including

generating the third signal using memory circuitry, the memory circuitry having a data input responsive to the first signal, and a control input responsive to the second signal.

4. The method of claim 1 wherein moving includes

responsive to the third signal, generating stepping motor pulses;

responsive to the stepping motor pulses, driving a stepping motor to rotate a sprocket and advance the film.

5. The method of claim 1 further including

responsive to a transition of the third signal, generating a number of stepping motor drive pulses to advance the film 1, and only 1, frame.

6. A system configured to enable conversion of light signals from a film into a video signal, the system comprising:

circuitry that receives a first signal, the first signal being generated responsive to a user control for a play speed of a film, the first signal including a plurality of first-signal pulses;

circuitry that receives a second signal, the second signal being synchronized with a video camera that generates television signals, the second signal including a plurality of second-signal pulses;

circuitry that processes the first signal with the second signal, to generate a third signal, the third signal including a plurality of third-signal pulses, each third-signal pulse corresponding to a respective one of the first-signal pulses, each third-signal pulse being synchronized with a second-signal pulse, each first-signal pulse corresponding to a respective one of the third-signal pulses, whereby there is a one-to-one correspondence between the first signal pulses and the third signal pulses; and

an actuator, responsive to the third signal, that moves a relative position of the film with respect to the video camera, thereby enabling generation of a video signal from the film.

7. A system according to claim 6 further including

circuitry that generates the second signal by receiving a video signal from the video camera, to generate a vertical synchronizing signal.

8. A system according to claim 6 wherein the circuitry that generates the third signal includes memory circuitry, the memory circuitry having a data input responsive to the first signal, and a control input responsive to the second signal.

9. A system according to claim 6 wherein the actuator includes a stepping motor.

10. A system according to claim 6 further including circuitry, responsive to a transition of the third signal, that generates a number of stepping motor drive pulses to advance the film 1, and only 1, frame.

11. A system configured to enable conversion of light signals from a film into a video signal, the system comprising:

means for receiving a first signal, the first signal being generated responsive to a user control for a play speed of a film, the first signal including a plurality of first-signal pulses;

means for receiving a second signal, the second signal being synchronized with a video camera that generates television signals, the second signal including a plurality of second-signal pulses;

means for processing the first signal with the second signal, to generate a third signal, the third signal including a plurality of third-signal pulses, each third-signal pulse corresponding to a respective one of the first-signal pulses, each third-signal pulse being synchronized with a second-signal pulse, each first-signal pulse corresponding to a respective one of the third-signal pulses, whereby there is a one-to-one correspondence between the first signal pulses and the third signal pulses; and

means, responsive to the third signal, for moving a relative position of the film with respect to the video camera, to generate a video signal.