Apparatus for inserting blanked formatted fingerprint data (source ID, time/date) in to a video signal

• US 5,739,864 A
• Filed: 08/24/1994
• Issued: 04/14/1998
• Est. Priority Date: 08/24/1994
• Status: Expired due to Term

• Current Assignee: Rovi Solutions Corporation (Adeia Inc.)
• Original Assignee: Macrovision Corporation (Adeia Inc.)
• Inventors: Copeland, Gregory C.
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US08/294,983
• Time in Patent Office: 1,329 Days
• Field of Search: 348/1, 348/4, 348/460, 348/461, 348/464, 348/465, 348/467, 348/473, 348/474, 348/476-479, 348/558, 348/705, 348/906, 360/14.3, 360/33.1, 358/335
• US Class Current: 348/473
• CPC Class Codes: G06F 7/725 over elliptic curves
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00094 involving measures which result in a restriction to authorised record carriers
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00913 based on a spread spectrum technique
• CPC Class Codes: H04N 2005/91335 the copy protection signal being a watermark
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 7/08 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band , e.g. by time division H04N7/007 takes precedence
• CPC Class Codes: H04N 7/165 Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309

Abstract

A method and apparatus for inserting source identification data into a video signal prior to its transmission, recording or display. The source identification data (Finger Print) is injected into the active picture area of a video signal without disturbing the viewing of the video signal and the data is retrieved by a data reader, called a Fingerprint Reader. The data injection or "fingerprinting" process consists of dynamically offsetting the video pedestal to carry information which can then be read back from any videotape made from the output of the data-injecting unit. In particular, the fingerprint carries the ID number of the unit used and the current date. The offset lasts for one entire field and has an amplitude of approximately 0.5 IRE-- that is, a given field either has the nominal setup or a setup value differing from nominal by 0.5 IRE. The data is repeated every 128 fields in order to provide ample samples for the reader to detect and display the source identification data.

Claims

1. An apparatus to incorporate source identification data into a video signal comprising:

a video processor having a video input signal, wherein said video input signal is coupled to a sync separator;

said sync separator generates a vertical triggering pulse, wherein said vertical triggering pulse is coupled to a data modulator;

source identification data is inputted to said data modulator;

said data modulator generates a serial data stream comprising a sync word and said source identification;

horizontal and vertical blanking pulses are generated in said video processor and coupled to a data blanker;

said serial data stream is coupled to said data blanker wherein said serial data stream is blanked during horizontal and vertical blanking intervals of said video input signal to create a blanked data signal; and

said blanked data is combined with said video input signal.

2. An apparatus as in claim 1, wherein said source identification data comprises data identifying a source of said video input signal and a date and time stamp.

3. An apparatus as in claim 2, wherein said source comprises a specific theater displaying said video signal.

4. An apparatus as in claim 2, wherein said source is a specific video cassette duplicator or recorder that originally recorded said video signal.

5. An apparatus as in claim 1, wherein said sync word is preprogrammed into a read only memory.

6. An apparatus as in claim 1, wherein said sync word is generated by a user controlled keyboard or keypad.

7. An apparatus as in claim 1, wherein said video processor is part of a video projection system.

8. An apparatus as in claim 1, wherein said video processor is part of a video recording system.

9. An apparatus to incorporate source identification data into a video signal comprising:

said video signal is inputted to a means for processing a video signal;

said video signal is also inputted to a means for generating a vertical triggering pulse;

means for providing a sync word;

means for providing source identification data;

said vertical triggering pulse, said source identification data said sync word are inputted to a means for data modulation to produce formatted finger print data;

inputting said finger print data to a means for blanking said formatted fingerprint data during video blanking intervals;

inputting said blanked formatted fingerprint data to a means for coupling said blanked formatted fingerprint data to said video signal.

10. A method for incorporating source identification data to the active picture of a video signal comprising the steps of:

inputting a video signal;

detecting a vertical trigger pulse from said video signal;

generating blanking signals from said video signal;

generating source identification data;

generating a sync word;

coupling said vertical trigger pulse, said source identification and said sync word to a data modulation means to generate a formatted finger print signal;

using said blanking signals to blank said formatted fingerprint signal during blanking intervals of said video signal;

combining blanked fingerprint signal with said video signal.