Dynamic magnetic information storage or retrieval – Record editing
Patent
1986-12-02
1988-12-13
Faber, Alan
Dynamic magnetic information storage or retrieval
Record editing
360 331, 358335, H04N 5783
Patent
active
047914998
ABSTRACT:
In a magnetic tape machine which can be played to reproduce television pictures at speeds different from the recording speed, in connection with which the video signals are stored in a picture memory, the video signals are stored under group addresses in 60-byte blocks, both for the luminance and chrominance signals. After a predetermined storage period has elapsed, the stored data are overwritten with erasing value signals. A circuit arrangement for this operation includes an administrative memory (4) for which the storage duration values for contents stored under every block address is, beginning after writing-in, successively reduced in value. When a zero value is reached, the corresponding block address is stored and used in its turn as a write-in address for the erasing value signals which replace the video data previously written in to the picture memory under this address. The erasing orders are preferably accumulated in a buffer and then executed while no usable signals for storage in the memory are being picked up (i.e. when the tape scanning is passing over boundary areas between adjacent tracks).
REFERENCES:
patent: 4279024 (1981-07-01), Schrenk
patent: 4597020 (1986-06-01), Wilkinson
Faber Alan
Robert & Bosch GmbH
LandOfFree
Method and apparatus for reproduction of video signals from magn does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reproduction of video signals from magn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reproduction of video signals from magn will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2199847