Apparatus and method for conveying camera control...

Details Apparatus and method for conveying camera control... Apparatus and method for conveying camera control...

H - Electricity

04

N

350/50

H04N 5/04 (2006.01) H04N 7/087 (2006.01)

Patent

CA 1210139

ABSTRACT Apparatus for transmitting camera control character- istic information from a central unit to a remote television camera by superimposing a series of pulse-position modulated (PPM) signals onto a black burst signal which includes trans- mitted synchronization signals, each PPM coded signal repre- senting the value of a corresponding control characteristic. Specifically, between adjacent horizontal synchronization pulses which are outside vertical blanking intervals, a pre- defined sequence of time windows is provided and a pulse is positioned in each window. The window corresponds to a given control characteristic and the position of the pulse within the window represents the value of the given control character- istic.

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