Granted Patent B2

US 7,623,661 · App. 10/657,287 · Granted Nov 24, 2009

Abstract

Claims (22)

1. A motion picture security code application system, comprising:

(a) code symbol recording equipment for recording code symbols on a motion picture record medium; and

(b) a control system for controlling said recording equipment to cause it to record on said record medium information comprising a plurality of separate coded symbols, each symbol representing a digit of a multi-digit security code and being recorded in a separate frame of a motion picture recorded on said record medium,

in which each of said symbols comprises an array of visible marks representing one digit of a print identification number, said marks being large enough to avoid their eradication by the compression means used in a video camera used to make a copy of the motion picture recorded on said record medium when projected onto a motion picture display screen, but small and spaced apart so as to be essentially, unnoticeable by an ordinary viewer of the motion picture, each of said symbols comprising a selected combination of marks from a dot matrix.

2. A system as in claim 1 in which each of said marks is between approximately 0.005 inch and 0.015 inch in diameter.

3. A system as in claim 1 in which said recording equipment includes fiber-optic cables with an exit focusing lens and a controlled light source for sending light through selected ones of said fiber-optic cables to record a pattern of marks on said record medium and thereby form one of said symbols.

4. A system as in claim 3 in which said recording equipment includes means for synchronizing the formation of said marks with the movement of said record medium through a copy recorder for recording the motion picture on said record medium.

5. A system as in claim 4 in which said record medium is motion picture film and said copy recorder is a film printer.

6. A motion picture security code application system, comprising:

(a) code symbol recording equipment for recording code symbols on a motion picture record medium; and

(b) a control system for controlling said recording equipment to cause it to record on said record medium information comprising a plurality of separate coded symbols, each symbol representing a digit of a multi-digit security code and being recorded in a separate frame of a motion picture recorded on said record medium,

in which each of said symbols is composed of one or more small marks made to look like a defect selected from the group consisting of dirt or dust particles; scratches; and color defeats,

further in which each of said symbols comprises a representation of one digit of a multi-digit print identification number, and a unique identification number is provided for each of a plurality of prints of a motion picture; and further in which said medium is motion picture film having a leader, and including a device for recording said identification number on said leader.

7. A system as in claim 6 in which said identification number on said leader is in non-coded alphanumeric form.

8. A method of counterfeit detection comprising the steps of:

(a) recording within a motion picture film copy an identification number of the copy, said identification member comprising a plurality of digits, each recorded in code form in the visible area of a different frame of a film recorded on said film copy, said different frames being spaced from one another along the length of said film;

(b) keeping a record of the identification number for said copy and the destination to which it was delivered;

(c) viewing a suspected counterfeit copy of said film and determining the copy identification number recorded in said suspected counterfeit copy; and

(d) tracing said copy to said destination to which the copy was delivered.

9. A method as in claim 8 in which each of said digits is in the form of marks forming a pre-selected pattern, each of said defects being as small as possible without making them invisible to the naked eye or being erased by the data compression of a video camera used to copy the motion picture.

10. A method as in claim 9 in which each of said patterns is positioned in a frame so as to give minimum interference with viewing of the motion picture.

11. A method as in claim 10 in which each of said patterns is located in a predetermined position within the frame.

Assignments (36)