Abstract:
A process for the wafer-scale fabrication of CMS electronic modules starts from a wafer with metallized outputs, comprising electronic components molded in resin and, on one side, the external outputs of the electronic components on which a nonoxidizable metal or alloy is deposited, and of a printed circuit provided with oxidizable metal or alloy contact pads. In the process, the wafer is cut in predetermined patterns for obtaining reconfigured molded components that include at least one electronic component; the reconfigured components are assembled on the printed circuit, the metallized external outputs of the reconfigured components being placed opposite the metallized contact pads of the printed circuit; and these external outputs are connected solderlessly to the metallized contact pads of the printed circuit by means of a material based on an electrically conductive adhesive or ink.
Abstract:
A process for the wafer-scale fabrication of CMS electronic modules starts from a wafer with metallized outputs, comprising electronic components molded in resin and, on one side, the external outputs of the electronic components on which a nonoxidizable metal or alloy is deposited, and of a printed circuit provided with oxidizable metal or alloy contact pads. In the process, the wafer is cut in predetermined patterns for obtaining reconfigured molded components that include at least one electronic component; the reconfigured components are assembled on the printed circuit, the metallized external outputs of the reconfigured components being placed opposite the metallized contact pads of the printed circuit; and these external outputs are connected solderlessly to the metallized contact pads of the printed circuit by means of a material based on an electrically conductive adhesive or ink.
Abstract:
A system which provides synchronization with frame synchronization words of a partially digital signal, such as that of the D2MAC television standard. It is provided that three modes of operation are established sequentially. In a first mode, the values necessary to control the gain and the d.c. level of the television signal are obtained by means of a peak detector (18). Similarly, in a second mode, the peak detector is enabled only during the digital signal periods of the D2MAC signal. Finally, in the third mode, the setting values are obtained by arrangements (13, 8) which depend on the clamp plateau measurement of each line and of line 624. The television signal is converted into a digital signal by an analog/digital converter (6), which, more specifically, feeds the digital arrangement (8) for measuring the picture plateaus; the results of the peak detector measurement (18) are also converted into digital values (17), managing the procedure and the processing of at least a portion of the control signals is effected by a microprocessor (33) and certain control signals are again converted into analog values by a digital/analog converter (10).