Abstract: A fast frame recorder which records images of an event at a fast frame rate and plays back the images at a slower frame rate to facilitate analysis of the event. The fast frame recorder includes a solid state imager and solid state memory for recording image frames captured by the imager. The exposure time and frame rate of the recorder are independently selectable, as long as exposure time does not exceed 1/frame rate.

Abstract: A fast frame recorder records images of an event at a fast frame rate and plays back the images at a slower frame rate to facilitate analysis of the event. Disclosed is a fast frame recorder having solid state memory capable of continuously recording an event in a circular or FIFO format until an external trigger terminates recording. By varying the delay of the external trigger, the number of image frames recorded before and after the triggering event may be varied.

Abstract: In a multitrack motion analyzer in which video information representing a scene is recorded at a fast frame rate and played back at a slower frame rate, digital data timing and synchronization signals relating to each recorded frame is simultaneously recorded on a separate track as bipolar return to zero (BRZ) FM signals. A Non Return to Zero (NRZ) bit serial digital data signal and synchronous data clock signal are encoded as BRZ digital data signals and then frequency modulated so that the "1" bit, the "0" bit, and the "return to zero" signal levels of the BRZ data signal are converted to three frequencies. The three frequencies are integral multiples and synchronous to the data rate of the NRZ digital data signal so as to eliminate uncertainty between bit boundaries and allow packing more bits per unit time for a given carrier bandwidth. Additionally, accurate synchronization information is recorded and recovered by inserting a missing clock in the BRZ data stream.

Abstract: In video reproduction apparatus in which video information representing a scene is recorded in a plurality of longitudinal tracks on magnetic tape, a timing signal is also recorded in a timing track parallel to the video information tracks. A dropout in the timing signal reproduced from the timing track causes degradation in the reproduced scene. There is disclosed a circuit for compensating for dropouts in the timing signal track to reduce such reproduced image degradation. A phase lock loop circuit produces a video sampling signal which is phase locked to the reproduced timing signal, and which has a frequency that is a multiple of said timing signal. The phase lock loop circuit has a loop bandwidth which tracks variations in frequency produced by flutter.