Dicode decoder translating dicode or three-level digital data signal into two level form

摘要: 1,130,041. Transistor pulse circuits; data transmission; facsimile transmission. XEROX CORP. 19 Oct., 1965 [25 Nov., 1964], No. 44236/65. Headings H3T, H4F and H4P. Dicode signals (i.e. of the form shown in Figs. 2a 2b) are converted to original (Fig. 1) by converting pushpull form, adding neutral terminal push-pull circuit a voltage dependent upon peak amplitude signal feeding combined threshold detector. As shown, dicode at secondary transformer T with applied centre tap equal half positive excursion so that first SR-3 causes Q6 conduct when negative exceeds its second SR-4 Q7 inverted likewise halfpeak value. Differentiating circuits CR-3, R-4 CR-4, R-5 feed resulting pulses respective inputs bi-stable Q8-Q9 which thus reproduces 1). The half-amplitude for 16 is derived peak-to-peak rectifier C-1, C-2, SR-1, SR-2 potentiometer R-1 divides rectified four. diode may be provided transmitter.