Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1995-04-04
1998-04-14
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
348 97, H04N 597, H04N 911
Patent
active
057403120
ABSTRACT:
An apparatus achieves an exposure control for getting an image with the best SN without a mechanical iris and an image processing which is good at the color-reappearance and the gradation property with a simple digital processing circuit. When the film image is read by the line sensor 14 which has an electric shutter function, the electric shutter, the film feeding speed and the analog amplifier 16 are controlled totally so as to obtain images with the best SN from high to low transmittance negatives. And, when the dot sequential R, G, B digital signals are processed digitally, the offset values and the gain volumes of the respective R, G, B are calculated based on the maximum value and the minimum value which are detected by the respective R, G, B digital signals, the calculated offset values of the respective R, G, B are added to the dot sequential R, G, B digital signals which are obtained during the re-scanning, and the calculated gain volumes of the respective R, G, B are multiplied by the offset dot-sequential R, G, B digital signals so as to adjust the white balance and the black balance.
REFERENCES:
patent: 4278999 (1981-07-01), Ganguly
patent: 4338634 (1982-07-01), Dillon et al.
patent: 4703365 (1987-10-01), Mumford
patent: 5424774 (1995-06-01), Takayama et al.
Hyodo Manabu
Ishihara Atsuhiko
Nakazawa Makoto
Tanaka Hiroshi
Fuji Photo Film Co. , Ltd.
Nguyen Huy
Tran Thai
LandOfFree
Film image reading system and image processing method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Film image reading system and image processing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film image reading system and image processing method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-644782