HAND-SHAKE DETECTOR OF CAMERA

摘要

PURPOSE:To detect a camera hand-shake and to warn it by sampling and processing the output signal of a CCD line sensor. CONSTITUTION:Pieces of information on the shutter speed and aperture value at the point I of time when a shutter button is pressed and set are sent from a terminal 7 to a driving circuit 2 to determine the optimum storage time of the CCD line sensor 1. The circuit 2 drives the sensor 1 to sends an output picture signal A to a signal processing circuit 3. A signal processing circuit 8 decides on a threshold value L by inputting the pieces of information on the shutter speed and aperture value from the terminal 7, and sends the threshold value to the circuit 3. The circuit 3 samples part of the signal A above the threshold value L to obtain a signal B. The output picture signal C of the sensor 1 at a point II of time determined after the point I of time is transmitted to the circuit 3 and sampled on the basis of the threshold value L stored in the circuit 3 to obtain a signal B. The shifting extent of the signal D when the correlation calculated from the signals B and D is maximum corresponds to the picture blur amount generated between the points I and II of time.