Recording/playback system for VCR

Details Recording/playback system for VCR Recording/playback system for VCR

1990-03-30

1992-12-15

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

380 5, 360 331, 358310, 358320, H40N 716

Patent

active

051722410

ABSTRACT:
A recording and playback system for code recording of VCR which comprises a synchronous separator, an 1/2 frequency demultiplier, a microcomputer, a comparator, a control pulse amplifier, a key matrix, a control circuit, a control head, a pulse generating head, and particularly at least demultiplier, transistor, switch, and resistor, whereby it is made to record a code in initial stage of recording, whereby it can be reproduced only when decoding the code in the initial stage of reproducing, while in a state of not selecting a code mode, it operates as similar as the conventional VCR, and even if one knows the code, the code cannot be decoded in other VCR having not the decoding function whereby it cannot be reproduced normally, whereby complete secret preservation can be kept, while in the normal mode being of not code mode, it operates similarly as the conventional system so that it can be easily applied to conventional system.

REFERENCES:
patent: 4635112 (1987-01-01), Tomioka et al.
patent: 4879611 (1989-11-01), Fukui et al.

Affiliated with

Also associated with

Rating

Recording/playback system for VCR does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recording/playback system for VCR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording/playback system for VCR will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2098136