The invention discloses a means and method of eliminating jitter, during playback, in video reproducing and/or recording apparatus utilizing the skip field system. This jitter is eliminated and both horizontal and vertical continuity of sync assured by phase displacing head No. 2 and delaying, in a controlled manner, the vertical synchronizing signals applied to the television receiver for playback by heads Nos. 1 and 3.
This application is a division of my patent application, Ser. No. 234,022, filed Mar. 13, 1972, now U.S. Pat. No. 3,777,054, entitled "Vertical Synchronization Time Base Error Corrector" and assigned to the same assignee as the present application.
In order to reduce a crosstalk component contained in a playback video signal reproduced from a recording medium such as a video disc, method and system for recording a video information comprises a step for recording a video signal in a manner that an absolute value of a difference between a cumulative value of the phase of a recording RF signal of each horizontal scanning period of a first section of recording tracks and a second cumulative value of the phase of the recording RF signal of each horizontal scanning period of a second section of said recording tracks adjacent to said section of recording tracks is controlled to a value (2m+1).pi. (m being a positive integer including 0).
A magnetic recording and reproducing device includes a reproducing mechanism which can be operated in a selected one of a first mode wherein information recorded on a tape is reproduced at a speed substantially equal to that at which the information was recorded, and a second mode wherein the information is reproduced at a speed different from that at which it was recorded. The reproducing mechanism includes a principal rotation head which produces an information signal in the first mode. The mechanism also includes an auxiliary rotation head which operates to detect the positional shift of the principal head relative to the tape when the first mode is selected, and reproduces the information recorded on the tape when the second mode is selected.
Light energy data is generated in sequential interlaced field raster format y a sensor driven in azimuth to detect a panoramic scene. The light energy data is sequentially recorded together with an azimuth rate signal which is a function of the rate that the sensor is driven in azimuth. Because the sensor has been driven in azimuth, however, there is a delay in the sequential detection between first and second interlaced fields of any selected frame of the panoramic scene; consequently, when it is desired to retrieve and playback a "stop-action" image comprised of a selected frame, compensation must be made for the delay. The recorded azimuth rate signal is used to develop a commensurate delay between the two sequential first and second interlaced fields of light energy data comprising the selected frame of light energy data which is desired to playback in "stop-action" form. The delay period thus developed is applied to correct the delay between the first and second interlaced fields so that visual display means, such as cathode ray tube monitor, may display the "stop-action" playback of the selected frame in a corrected form, eliminating the "jitter" that otherwise would be visually present between first and second interlaced fields due to the sequential field rate of the raster format in which the light energy data is recorded relative to the azimuthal rate at which the sensor was driven.
