Registers – Coded record sensors – Particular sensor structure
Patent
1977-09-26
1979-04-24
Cook, Daryl W.
Registers
Coded record sensors
Particular sensor structure
235467, 235455, 235474, 250555, 250570, G06K 714, G08C 906
Patent
active
041507835
ABSTRACT:
The method for reading information from a punched carrier, consists of modulating a radiation flux emitted by a radiation source by information holes of the punched carrier and then additionally modulating by an additional modulation means. The double-modulated radiation flux is then reflected by a reflector to a photosensitive input of a main converter which converts the radiation flux into a primary information signal. The primary information signal is then compared to a reference signal which changes according to the law of additional modulation, whereupon the preset signal is discriminated. The proposed device for effecting the method comprises a radiation source optically connected to a reflector through the information holes of the punched carrier, as well as through an additional modulation means. The additional modulation means can performthe functions of the reflector. The device further includes at least one information channel having a main converter whose output is connected via a main amplifier unit to a synchronizing input of a comparator. The comparator comprises a recognition circuit and a preset information signal discrimination circuit placed in series. The photosensitive element of the main converter is optically connected to the reflector. The main converter converts the radiation flux into primary information signals which are sent to the comparator. The comparator compares the primary information signals with a reference signal which is changing according to the law of additional modulation.
REFERENCES:
patent: 2448830 (1948-09-01), Robbins et al.
patent: 3431426 (1969-03-01), Laidlaw
patent: 3654478 (1972-04-01), Fuwa
patent: 3692983 (1972-09-01), Cucciati et al.
Alyapkin Vladimir D.
Litovchenko Sergei S.
LandOfFree
Method for reading information from punched carrier and device f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for reading information from punched carrier and device f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reading information from punched carrier and device f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1987659