Method of electronic stabilization of the image obtained with a television camera rigidly installed on a moving support

Claim 1

APPARATUS FOR COMPENSATING FOR MOVEMENTS OF THE OPTICAL IMAGE PRODUCED IN THE TUBE OF A TELEVISION CAMERA MOUNTED ABOARD AN AIRCRAFT AND PLACED ON A SUPPORT RIGIDLY SECURED TO SAID AIRCRAFT, WHICH MOVEMENTS OF THE OPTICAL IMAGE RESULT FROM RELATIVE MOVEMENTS BETWEEN THE CAMERA ON ITS SUPPORT AND AN OBJECT TO BE FILMED DUE TO MOVEMENT OF THE AIRCRAFT ABOUT ITS PITCHING, ROLLING AND YAWING AXES COMPRISING GYROSCOPIS MEANS FOR DETECTING AND MEASURING THE ANGLES OF YAWING, PITCHING, AND ROLLING OF THE AIRCRAFT, A TELEVISION CAMERA RIGIDLY MOUNTED ON A SUPPORT SECURED TO THE AIRCRAFT FOR MOVEMENT THEREWITH, SAID TELEVISION CAMERA HAVING A TUBE WITH ELECTRON GUN MEANS TO PRODUCE AN ELECTRON BEAM AND DEFLECTING COIL MEANS ASSOCIATED THEREWITH, MEANS CONNECTED TO SAID GYROSCOPIC MEANS FOR FORMING AND APPLYING DEVIATION VOLTAGES, SAID MEANS SUPPLYING ELECTRICAL SIGNALS WHICH ARE A FUNCTION OF MOVEMENT OF SAID GYROSCOPIC MEANS TO SAID DEFLECTING COIL MEANS OF SAID TELEVISION CAMERA TUBE, SAID GYROSCOPIC MEANS INCLUDING AT LEAST ONE DIRECTIONAL GYROSCOPE HAVING PRIMARY AND SECONDARY RINGS AND FREELY MOUNTED ON SAID SUPPORT SECURED TO THE AIRCRAFT WITH AXES CONNECTED TO SAID PRIMARY AND SECONDARY RINGS RESPECTIVELY TO DRIVE SAID MEANS FOR FORMING AND APPLYING DEVIATION VOLTAGES INCLUDING DETECTING MEANS FOR DETECTING THE ANGLES OF PITCHING AND YAWNING RESPECTIVELY, THE OUTPUT VOLTAGES OF SAID DETECTING MEANS BRING SIMULTANEOUSLY APPLIED WITH CORRESPONDING VOLTAGES AT IMAGE FREQUENCY AND LINE SCANNING FREQUENCY, RESPECTIVELY, TO SAID DEFLECTING COIL MEANS,