Apparatus for enhancing image quality of a videotape recorder us

Details Apparatus for enhancing image quality of a videotape recorder us Apparatus for enhancing image quality of a videotape recorder us

1992-06-12

1994-08-02

Groody, James J.

Television

Bandwidth reduction system

Data rate reduction

358310, 358330, 348396, 348425, H04N 591, H04N 592

Patent

active

053350715

ABSTRACT:
The present invention relates to a motion adaptive picture image signal reproduction circuit which appropriately unfolds the brightness signal of a still picture image signal foldly recorded on a video tape, and outputs the brightness signal of a picture image signal unfolding recorded corresponding to a detected motion. According to the motion adaptive picture image signal reproduction circuit, the dynamic picture image recorded in a conventional VCR recording manner is reproduced as it is, while the still image having a greater number of image data in a restricted bandwidth, recorded in the frequency folding manner, is unfolded to a frequency band of the brightness signal by an unfolding carrier, thereby providing a recording/reproducing system having the improved resolution.

REFERENCES:
patent: 4621236 (1986-11-01), Reitmeier et al.
patent: 4772961 (1988-09-01), Ichinoi
patent: 4831463 (1989-05-01), Faroudja
patent: 4943848 (1990-07-01), Fukinuki
patent: 5031030 (1991-07-01), Hurst, Jr.
patent: 5063457 (1991-11-01), Ishikawa et al.
patent: 5113262 (1992-05-01), Strolle
patent: 5161030 (1992-11-01), Song
Research Disclosure on "Video Signal Bandwidth Compression", No. 183, Jul. 1979, pp. 382-384 (disclosed anonymously).
Journal of British I.R.E. on "Reduction of Television Bandwidth by Frequency-Interlace", Feb. 1960, pp. 127-136.

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