Showing papers on "Serial port published in 1979"
Patent•
20 Nov 1979TL;DR: In this article, the authors proposed a system for detecting a mobile body carrying an identification code, which consists of a fixed station containing a generator of high-frequency oscillations feeding a self-induction coil, the mobile body comprising a parallel oscillating circuit (7,8), characterised in that the said generator functions at fixed frequency.
Abstract: The system applies in the field of electronic automation. System for recognising a mobile body carrying an identification code comprising a fixed station containing a generator (1) of high- frequency oscillations feeding a self-induction coil (3), the mobile body comprising a parallel oscillating circuit (7,8), characterised in that the said generator functions at fixed frequency, the oscillating circuit (7,8) being the source of oscillations received by a detection circuit (9) feeding logic encoding circuits comprising a serial interface adapter (10) and a code display circuit (11), the serial interface adaptor being speed-regulated by a clock signal formulated by a circuit (12) for shaping the voltage gathered at the terminals of the oscillating circuit, the output of the serial interface adaptor controlling a modulating circuit (13) acting on the Q-factor of the oscillating circuit at the tempo of the code formulated by the serial interface adaptor, the fixed station further comprising a detection circuit (14), a shaping circuit (15) and a parallel interface adaptor circuit (16) restoring the code to the form of a parallel message. The system applies to the regulated feeding of cows.
18 citations
TL;DR: A low noise, programmable gain amplifier has been developed for acquiring ECG data from a variety of recording environments and an on-board output monitor multiplexer controlled via a second serial interface.
Abstract: A low noise, programmable gain amplifier has been developed for acquiring ECG data from a variety of recording environments. Features include: low noise (4muV peak-to-peak) differential inputs; digitally programmable gains (range 100 to 16000) and output DC offsets (range -3.5 to +4 V) controlled via a serial interface; externally selectable low frequency response (0.04 or 0.08 Hz); and an on-board output monitor multiplexer controlled via a second serial interface.
7 citations
Patent•
31 Oct 1979
TL;DR: In this article, the authors proposed to avoid the shift of the registration caused by the environmental change by connecting in series the deflecting coils of the multi-tube type color camera and then driving those coils with one unit of the output amplifier.
Abstract: PURPOSE:To avoid the shift of the registration caused by the environmental change by connecting in series the deflecting coils of the multi-tube type color camera and then driving those coils with one unit of the output amplifier. CONSTITUTION:Output amplifier 15 which uses the output of opposite amplifier 4 as the input drives the serial connection circuit of deflecting coils 16 - 18 corresponding to three primary colors R, G and B each. Variable coil 19 and 20 which performs the registration adjustment are connected in parallel to coil 16 and 18 based on deflecting coil 17. In such constitution, the shift of the registration caused by the ambient temperature change can be improved greatly because of only one unit of the output amplifier for driving the deflecting coil. Thus, the stability can be increased for the color camera.