Magnetic recording and regenerating unit for photographic film a

Details Magnetic recording and regenerating unit for photographic film a Magnetic recording and regenerating unit for photographic film a

1999-08-04

2000-10-31

Gray, David M.

Photography

With data recording

Magnetically on film or film cassette

360 62, 360 67, G03B 1724

Patent

active

061415022

ABSTRACT:
A magnetic recording and regenerating unit for photographic film and a camera, which feed photographic film coated with a magnetic recording layer, records magnetic information in the magnetic recording layer, and regenerates magnetic information from the magnetic recording layer. In the magnetic recording and regenerating unit for a camera, the number of turns of a coil wound around a core included in a magnetic head is small. Thus, one magnetic head is able to record and regenerate magnetic information. The number of turns of the coil is determined so as to output a regenerated waveform which does not enable reading of the magnetic information but permits determination of whether any magnetic information is recorded or not. Whether any magnetic information is recorded or not is determined based on the output voltage from a smoothing circuit, a peak hold circuit, etc. which receive signals output from the magnetic head via an amplifier.

REFERENCES:
patent: 4533965 (1985-08-01), Steinbaugh
patent: 5130745 (1992-07-01), Cloutier et al.
patent: 5202800 (1993-04-01), Perroud
patent: 5335029 (1994-08-01), Itoh et al.
patent: 5381277 (1995-01-01), Jaffard et al.
patent: 5412444 (1995-05-01), Kazami
patent: 5434634 (1995-07-01), Yoshida
patent: 5649249 (1997-07-01), Yoshida
patent: 5727240 (1998-03-01), Mizumoto et al.
patent: 5729778 (1998-03-01), Sasaki
patent: 5760876 (1998-06-01), Farling et al.

Affiliated with

Also associated with

Rating

Magnetic recording and regenerating unit for photographic film a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording and regenerating unit for photographic film a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording and regenerating unit for photographic film a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063481