Method and apparatus for creating encrypted and decrypted television signals
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United States of America Patent
Stats
-
Feb 10, 1987
Issued Date -
N/A
app pub date -
May 21, 1985
filing date -
Jun 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for creating a television signal and encrypting or decrypting the signal at the same time. Luminance and chrominance information are received by the apparatus and stored in separate television scan line stores. The stored liminance and chrominance information is read out from their respective stores at a frequency corresponding to a desired format or standard to create the television signal. The signal may be simultaneously encrypted or decrypted by delaying the time at which the luminance and/or chrominance information is read out in accordance with an encryption or decryption key.
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Family
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Cited Art Landscape
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