Abstract:
A system for controlling a number of electric devices (14, 15, 17, 18, 28, 28'; 19) on a car (1), particularly those fitted to the vehicle door (2, 2', 3, 3') and comprising at least a window regulator (18), a door lock device (17), a manual control push-button device (14) and a device (15) for electrically controlling an external rearview mirror (16); which devices (14, 15, 17, 18, 28, 28'; 19) comprise at least an electric operating member (24), and which system comprises at least a central processing unit (5) and at least a cable (7, 7', 8, 8') for electrically connecting the central processing unit (5) to the devices (14, 15, 17, 18, 28, 28'; 19); a single electric connecting cable (7, 7', 8, 8') being provided for the devices (14, 15, 17, 18) on each door (2, 2', 3, 3'), and comprising a first wire (10) for supplying positive electrical power, a second wire (11) for transmitting information signals, and a third ground wire (12); which information signals are transmitted over the aforementioned second wire (11) in asynchronous, serial manner; and which devices (14, 15, 17, 18, 28, 28'; 19) comprise a specific electronic control block (27) comprising at least a first integrated circuit (23) for supplying electrical power for operating the aforementioned member (24), and a second integrated circuit (25) for processing information signals relative to operation of the same.
Abstract:
A multi-level memory circuit for binary information, according to the invention, comprises a plurality (MTX) of memory cells, each adapted to store more than one item of binary information and comprised of at least one floating gate MOS transistor, the information stored therein corresponding to the level of the cell threshold voltage, and a read voltage generating circuit (ALIM) for the cell plurality, adapted to be input a supply voltage (VCC). The generating circuit (ALIM) includes a voltage boosting circuit (CHP) adapted to generate a read voltage (VW) having a higher value than the value of the supply voltage (VCC).
Abstract:
The electrical performance of a dielectric film for capacitive coupling in an integrated structure is enhanced by forming the polycrystalline electrically conductive layer coupled with the dielectric film substantially unigranular over the coupling area, commonly to be defined by patterning the stacked dielectric and conductive layers. The process forms a polycrystalline silicon film having exceptionally large grains of a size on the same order of magnitude as the dimensions of the patterned details. These exceptionally large grains are obtained by preventing the formation of nullprecursor nucleinull of subsequent grain formation and growth at the deposition interface with the dielectric that are apparently formed during the first instants of silicon CVD deposition and by successively growing the crystallites at a sufficiently low annealing temperature.
Abstract:
A non-volatile memory cell of the type which includes at least one floating gate transistor and which is realized over a semiconductor substrate includes a source region, and a drain region, separated by a channel region which is overlaid by a thin layer of gate oxide. The gate oxide isolates a floating gate region from the substrate. The floating gate region is coupled to a control gate terminal. The floating gate region of the memory cell develops a first potential barrier between the semiconductor substrate and the gate oxide layer, and a second different potential barrier between the floating gate region and the gate oxide.
Abstract:
A non-volatile memory cell of the type which includes at least one floating gate transistor and which is realized over a semiconductor substrate includes a source region, and a drain region, separated by a channel region which is overlaid by a thin layer of gate oxide. The gate oxide isolates a floating gate region from the substrate. The floating gate region is coupled to a control gate terminal. The floating gate region of the memory cell develops a first potential barrier between the semiconductor substrate and the gate oxide layer, and a second different potential barrier between the floating gate region and the gate oxide.
Abstract:
The monolithically integrated device according to this invention comprises a first substrate (SUB) and, at least in a portion: a) a first structure (ST1) of a first material in solid form suitable to absorb hydrogen with ensuing generation of thermal energy, superposed to said substrate (SUB); b) a second structure (ST2) of a second material in solid form suitable to release hydrogen when it reaches a temperature higher than a prefixed temperature, superposed to said substrate (SUB); c) a third structure (ST3) of a third material in solid form suitable to generate thermal energy when it is submitted to the passage of electric current, so placed as to be thermally coupled at least to said second structure (ST2); wherein said first structure (ST1) and said second structure (ST2) are in contact, at least partly, with one another.
Abstract:
This invention relates to a solid fuel for cold nuclear fusion reactors. A reactor suitable for such fuel comprises a quantity (MA) of an absorbing material capable of absorbing hydrogen, and of generating in consequence thermal energy, has the form of a cylindrical container and comprises a quantity (CO) of a fuel capable of releasing hydrogen put in touch with the inner walls of container (MA), and comprises a thermal element (ET) located in the inside and in touch with fuel (CO) to heat it. The fuel according to this invention is constituted by a solid composition including at least one of the chemical elements belonging to the groups III, IV, V of the periodic system, or at least a compound obtained by combining to one another at least two of such elements, and including an effective quantity of hydrogen.
Abstract:
The doping of the core of an optical fiber may be precisely characterized by cutting sample slices of the fiber by means of a focused ion beam (FIB) machine and by carrying out a contact radiography of the slices using a soft X-ray source. Maps of the distribution of the dopant ions in the glassy matrix of the optical fiber's core may be obtained by analyzing the contact radiographies at the electronic or atomic force microscope. A dopant concentration value per unit length of fiber may be determined by interpolating the results over a plurality of slices of different thicknesses.
Abstract:
A multi-level memory circuit for binary information, according to the invention, comprises a plurality (MTX) of memory cells, each adapted to store more than one item of binary information and comprised of at least one floating gate MOS transistor, the information stored therein corresponding to the level of the cell threshold voltage, and a write signal generating circuit (ALIM) for the cell plurality, adapted to be input a supply voltage (VCC). The generating circuit (ALIM) is adapted to generate internally at least one write voltage (VW) having a selectable or selected (SW1, ..., SW4) value from a number of discrete regulated values corresponding to the number of the discrete levels provided.