H - Electricity – 03 – K
Patent
H - Electricity
03
K
354/56
H03K 5/19 (2006.01) G05B 1/03 (2006.01) G06F 7/02 (2006.01)
Patent
CA 1173562
PHD.80-125 16.6.81 ABSTRACT "Device for recognizing a binary word" For the recognition of a binary word in a bit stream in the form of light pulses in an optical conductor, the light signals arriving are distributed among a number of optical conductors, the number being equal to the number of bits of the word to be recognized. The optical conductors have a length which is stepped in unit steps in accordance with the bit distance in the bit stream, so that the delay in each conductor is equal to the distance of the bit associated with this light conductor from the last bit of the word. The ends of the optical conductors of the one bit value are connected to a photodetector, the ends of the other optical conductors being connected to a second photodetec- tor, a differential amplifier determining the difference between the two output signals. When the difference is maximum, the word has been recognized.
385323
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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