Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1995-03-31
1997-10-21
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 74, 386 72, 386 80, 386 81, H04N 592, H04N 576
Patent
active
056804997
ABSTRACT:
A time lapse video cassette recorder (VCR) includes a video head, a control head for selectively recording and reproducing a control pulse, a capstan motor moving a magnetic tape at a predetermined speed, a video signal processing circuit processing a video signal which is recorded or reproduced by the video head, a horizontal frequency corrector correcting a horizontal frequency in sync with the recording stop signal to prevent the change of the horizontal frequency which is caused by the deviation of a travel angle of the video head during 12H/24H recording, and a gain controller controlling a control gain of the capstan motor according to rotation speed of the capstan motor. The video head, in an exemplary case, is a dual-azimuth quad head. The time-lapse VCR recorder also includes and analog servo for generating a recording stop signal, a recording control pulse suitable for a time-lapse operation, a head switching pulse, a rotary switching pulse and a head amplifier switching pulse, for providing a control voltage to the capstan motor, and for controlling the phase of the capstan motor by reading the control pulse. The time-lapse VCR, thus, can be made compatible with a conventional VHS VCR. As a result, a stronger market can be created and product development time can be reduced, since the same accessories and established product lines used for the conventional VHS VCR are employed.
REFERENCES:
patent: 4238776 (1980-12-01), Tanaka
patent: 4633335 (1986-12-01), Yamamoto et al.
patent: 4658319 (1987-04-01), Tripp et al.
patent: 4675752 (1987-06-01), Higashi et al.
patent: 4771345 (1988-09-01), Watanabe
patent: 4796104 (1989-01-01), Ito et al.
patent: 5396378 (1995-03-01), Yokoyama
patent: 5432648 (1995-07-01), Watanabe et al.
patent: 5452144 (1995-09-01), Kawakami
Moe Aung S.
Samsung Electronics Co,. Ltd.
Tran Thai
LandOfFree
Time-lapse video cassette recorder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time-lapse video cassette recorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-lapse video cassette recorder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1013499