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Apparatus-for-scrambling-side-panel-information-of-a-wide-aspect-ratio-image-signal

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Apparatus for scrambling side panel information of a wide aspect ratio image signal

Details

Inventors: Cila, Benjamin J.; Koslov, Joshua L.; Hurst, Jr., Robert N.; Dietrich, Charles B.;
Assignee: General Electric Company (Princeton, NJ)
Primary Examiner: Kostak; Victor R.
Assistant Examiner:
Attorney, Agent or Firm: Tripoli; Joseph S., Herrmann; Eric P., Kurdyla; Ronald H.

In a widescreen television signal processing system, side panel video information is scrambled prior to modulating an auxiliary subcarrier which is ultimately combined with main panel video information. In a preferred embodiment the scrambling process involves rotation of image line information about a pseudorandomly chosen cut-point.

DETAILED DESCRIPTION In accordance with the principles of the present invention, the modulated auxiliary subcarrier signal is decorrelated, or scrambled.
This can be accomplished by scrambling the modulated auxiliary subcarrier signal, or by scrambling the baseband components which modulate the auxiliary subcarrier.
In an illustrated preferred embodiment of the invention, the baseband components are scrambled prior to modulation and prior to time expansion by a process of rotating of image line information about a pseudorandomly chosen cut-point in the encoder.

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