Picture search system for digital recording/reproducing apparatu

Details Picture search system for digital recording/reproducing apparatu Picture search system for digital recording/reproducing apparatu

1990-06-18

1992-08-04

Envall, Jr., Roy N.

Photocopying

Contact printing

Light boxes

355312, 360 101, 360 331, H04N 578

Patent

active

051363941

ABSTRACT:
In digital recording/reproducing apparatus of the invention, picture signals are digitalized, digital data for picture elements constructing each picture is stored together in a memory, and digital data is read out from the memory and recorded on a recording medium in a predetermined order. The memory includes plural memory regions for successively storing digital data corresponding to a predetermined number of picture elements in direction of horizontal scan of a picture. Data for every memory region is stored on the recording medium and thus memory regions are set on the recording medium corresponding the memory regions of the memory. In normal reproducing, all data is read out and is displayed. In search, only data stored in a memory region previously selected out of the plural memory regions is read out and displayed. Since only part of data constructing a picture is read out and displayed, time for read-out of data is shortened and thus a search is completed in a short while.

REFERENCES:
patent: 4575772 (1986-03-01), Shimada et al.
patent: 4587573 (1986-05-01), Odaka
patent: 4751589 (1988-06-01), Kominami et al.
patent: 4763208 (1988-08-01), Kawamura et al.
Alan V. Oppenheim article "Signals and Systems", 1983, pp. 513 to 555.
SMPTE Journal Yasuhiro Hirano, "A Study on Variable-Speed Reproduction of the Digital VTR", Jun. 1983, pp. 636-641.
Digitale Bildaufzeichnung, Charles E. Anderson, 1970, No. 4, pp. 119-123.

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