A memory controlling apparatus for a magnetic recording and repr

Details A memory controlling apparatus for a magnetic recording and repr A memory controlling apparatus for a magnetic recording and repr

1987-08-04

1990-03-27

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Record editing

358337, 360 70, H04N 5783

Patent

active

049125710

ABSTRACT:
A memory controlling apparatus for a magnetic recording and reproducing apparatus which records and reproduces a field image signal in each read or write cycle performed by a video head for reproducing the image signal from a magnetic tape, and by a video head position detector for detecting the position of the video head. A reference circuit obtains a signal defining a reference timing which is independent of the position of the video head and which is also used to determine the phase of the video head. A memory is provided having storage sufficient to store the field image signal, and a controller is provided for controlling the operation of reading and writing the image signal from and into the memory. The controller is synchronized with a signal of the video head position detector when storing the image signal into the memory and when reading out the image stored in the memory, the controller and the head position detector are synchronized with the reference timing so as to enable production of a slow-motion image signal free from fluctuations caused by feeding of the magnetic tape.

REFERENCES:
patent: 4558376 (1985-12-01), Heitmann
patent: 4594616 (1986-06-01), Dischert
patent: 4636874 (1987-01-01), Hoogendoorn et al.
patent: 4725898 (1988-02-01), Tokuyama
patent: 4731659 (1988-03-01), Kani
patent: 4733311 (1988-03-01), Yoshinaka
patent: 4733312 (1988-03-01), Morimoto

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