Digital process for controlling the correct reproduction of...

H - Electricity – 04 – N

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350/37, 350/56,

H04N 5/91 (2006.01) H04N 5/92 (2006.01) H04N 7/085 (2006.01) H04N 9/82 (2006.01) H04N 9/86 (2006.01) H04N 9/87 (2006.01)

Patent

CA 1152632

A DIGITAL PROCESS FOR CONTROLLING THE CORRECT REPRODUCTION OF A COMPOSITE TELEVISION SIGNAL AND A DEVICE FOR IMPLEMENTING SAID PROCESS ABSTRACT OF THE DISCLOSURE A digital process for controlling the correct reproduction of a com- posite television signal and in particular of a composite color television signal comprising sequential-type chrominance signals, transmitted or re- corded on an information-carrying medium such as a videodisk in which binary-coded pulsed signals are inserted during available intervals of the line scanning return, the binary value of these pulsed signals representing a particular state to be controlled. This value is detected during the process reproducing the composite television signals to make the particular state to be controlled dependent on this value. A first coded pulsed sig- nal may be used for identifying the two components of the chrominance sig- nals. A second coded pulsed signal may be used for identifying the face read of a transparent videodisk having information recorded on both its faces.

352986

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