Magnetic verification system for bill acceptor

Details Magnetic verification system for bill acceptor Magnetic verification system for bill acceptor

2008-05-27

2008-05-27

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140AG, C209S569000

Reexamination Certificate

active

07378674

ABSTRACT:
A magnetic verification system for a bill acceptor includes a magnetic induction circuit, a signal amplifying and regulating circuit, and a magnetic field generating circuit. The signal amplifying and regulating circuit has a D/A converter, and the magnetic induction circuit has a magnetic device adapted for scanning the magnetic ink of the bill to be verified. The magnetic device is adapted to write a magnetic field reference value from the magnetic field generating circuit into the D/A converter, for enabling the D/A converter to adjust the intensity of light being emitted by a LED of the signal amplifying and regulating circuit onto a photoresistance of the signal amplifying and regulating circuit so as to cause the photoresistance to change the resistance thereof subject to the intensity of light from the LED, so that an operation amplifier at the output end of the magnetic induction circuit obtains the correct magnetic field signal value to verify the authenticity of the inserted bill.

REFERENCES:
patent: 3612835 (1971-10-01), Andrews et al.
patent: 4617458 (1986-10-01), Bryce
patent: 5693931 (1997-12-01), Wade
patent: 6049478 (2000-04-01), Walley et al.
patent: 6229306 (2001-05-01), Stein et al.
patent: 6639200 (2003-10-01), Chen

Affiliated with

Also associated with

Rating

Magnetic verification system for bill acceptor 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 verification system for bill acceptor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic verification system for bill acceptor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2753261