摘要:
A memory read circuit includes a dynamically controlled precharging device that can be applied in the field of non-volatile (EEPROM, Flash EPROM) memories. The precharging circuit interrupts the precharging of the bit line and the reference line when the potential of the these lines reaches a boundary value referenced with respect to ground.
摘要:
To enable the putting into use of a monolithic integrated circuit comprising a processor and a fuzzy logic coprocessor, both having a single program memory in common, an operation is effected by which, at the time of the initializing of the integrated circuit, a volatile, random-access memory of the coprocessor is loaded with instructions stored in this single program memory.
摘要:
A coprocessor including a first multiplication circuit and a second multiplication circuit with a series input to receive n bits and a series output to give n+k bits. The coprocesser also includes addition and multiplexing circuits enabling the data elements produced by the multiplication circuits to be added up with one another and with other data elements encoded on n bits. The invention makes parallel use of the multiplication circuits to carry out modular or non-modular operations on pieces of binary data having n bits or more.
摘要:
The present invention relates to a triac network wherein each triac includes an N-type semiconductor substrate, containing a first thyristor comprised of NPNP regions and a second thyristor comprised of PNPN regions, and surrounded with a P-type deep diffusion. A P-type well contains an N-type region, on the front surface side. A first metallization corresponds to a first main electrode, a second metallization corresponds to a second main electrode, a third metallization covers the N-type region and is connected to a gate terminal, and a fourth metallization connects the P-type well to the upper surface of the deep diffusion.
摘要:
The present invention relates to a method and a device of information transfer between two circuits exchanging data via delta-sigma converters. The present invention includes coding the information in the form of at least one signal of determined frequency corresponding to an integer multiple of a frequency of the digital data samples; mixing, at a first end of a line carrying an oversampled digital signal of the converter, the signal of determined frequency; extracting from the mixture, at a second end of the line, the signal of determined frequency; and decoding the corresponding information.
摘要:
A device for decoding a data stream representing moving pictures encoded according to the MPEG standard in which a logical unit receives from an offset stage data containing the maximum number of bits in a variable length code returns the length of each decoded code to the offset stage, and produces a decoded value of each code. The logical unit includes a controller which controls at least two separate processing units, of which a first processing unit extracts the code length and addresses it to the offset stage, and a second processing unit decodes the codes.
摘要:
A monolithic assembly includes vertical power semiconductor components formed throughout the thickness of a low doped semiconductive wafer of a first conductivity type, whose bottom surface is uniformly coated with a metallization. At least some of these components, so-called autonomous components, are formed in insulated sections of the substrate, whose lateral insulation is provided by a diffused wall of the second conductivity type and whose bottom is insulated through a dielectric layer interposed between the bottom surface of the substrate and the metallization.
摘要:
A method for the erasure of a non-volatile and electrically erasable memory in which the amplitude of the pulses that are sent to erase the memory varies as a function of the number of pulses previously sent. A circuit for the generation of erasure pulses of variable amplitude for a non-volatile and electrically erasable memory.
摘要:
A monolithic component for protection against over-currents liable to occur on a line in series with which is connected a detection resistor, comprises a first cathode-gate thyristor associated with an avalanche diode and a second anode-gate thyristor of the gate triggering type or forward breakover type, its breakover voltage being substantially equal to the avalanche voltage of the avalanche diode.
摘要:
The present invention relates to a device for controlling a composite bridge including two anode-gate thyristors, the cathodes of which are connected together to a positive output terminal, the gates of the two thyristors being interconnected. The device includes a single-throw switch, controllable to be turned off and on, connected on the one hand to the two thyristors and on the other hand to a reference potential, and control means to turn on the switch only in a predetermined voltage range around the zero voltage of an a.c. voltage of the composite bridge.