Patent application number | Description | Published |
20080204083 | Voltage Comparator - Output currents from differentially connected transistors (t | 08-28-2008 |
20080284411 | Method and Circuit Provided for Measuring Very Low Intensity of Electric Current - The measurement of a very low intensity of an electric current is carried out by integrating the electric current over integration cycles having a time period ti and measuring a peak value of a sawtooth voltage at an integrated circuit output each time at the end of the integration cycle, whereat noise voltage components of a frequency above a cut-off frequency, which has a value of the order of magnitude (0.1×2π×ti) | 11-20-2008 |
20100090666 | METHOD FOR REGULATING SUPPLY VOLTAGE - According to the method for regulating the supply voltage Uo of an electronic circuit a regulating element with variable resistivity and the outer supply voltage Ui being applied to an input terminal of said regulating element is controlled by an amplified difference between a reference voltage and a part of a regulated supply voltage Uo, whereat at first an instant, on which the regulating circuit and the electronic circuit start operating, is detected, and then such value of the reference voltage is set on said instant that the regulated supply voltage Uo will equal a maximum allowable supply voltage of the electronic circuit and the supplied electronic circuit puts itself in a state of a maximum current consumption. Then an operating voltage drop (Ui-Uo)w across said regulating element is measured at regular time intervals and the reference voltage is then each time reduced by one degree until said operating voltage drop (Ui-Uo)w is below or equals a chosen most appropriate value (Ui-Uo)optim of said operating voltage drop. The supplied electronic circuit puts itself in a state of a normal current consumption when said operating voltage drop (Ui-Uo)w has exceeded the chosen most appropriate value (Ui-Uo)optim of said voltage drop. According to a variant embodiment the operating voltage drop (Ui-Uo)w is then uninterruptedly measured and, if its value decreases below a chosen minimum value (Ui-Uo)min of said operating voltage drop due to a disturbance in the outer supply voltage Ui, a flag is set in a memory in the case of a disturbance potentially dangerous to the electronic circuit, which flag indicates that the electronic circuit should be supplied at said operating voltage drop (Ui-Uo)w increased for one degree &Dgr;Uow after a first operating start of the regulating circuit and the electronic circuit following the flag setting in the memory. The method of the invention for regulating the supply voltage makes possible an automatic setting the supply voltage to a highest possible value, whereat, however, its quality with respect to lowering the level of disturbances is guaranteed. | 04-15-2010 |
20100194534 | RADIO FREQUENCY IDENTIFICATION SYSTEM PROVIDED FOR ACCESS CONTROL - An interrogator (Interrog) is additionally provided with a logic circuit (ActCommProt-ImplLCI) for implementing an active communication protocol and with a receiving second antenna (AI | 08-05-2010 |
20100315182 | ISOLATING INTERFACE WITH A DIFFERENTIATING CIRCUIT COMPRISING A CAPACITIVE BARRIER AND METHOD FOR TRANSMITTING A SIGNAL BY MEANS OF SUCH ISOLATING INTERFACE - A known method for parallel two-way symmetrical signal transmission by means of an isolating interface with a differentiating circuit comprising a capacitive barrier is improved. When restarting communication in the selected direction after a longer break, a pilot signal is conducted via the transmitting plates for the communication in the reverse direction and capacitive compensators to one of the receiving plates for communication in the selected direction. Threshold levels for comparisons of the signals of the first and second time derivative are decreased, the capacitance of capacitive compensators is then set to reduce output the output signal and finally communication is reestablished. Transmitting plates for communication in the reverse direction are now connected to the receiving plates for communication in the selected direction through the capacitive compensators with the capacitance adjusted as described above. This provides satisfactory signal transmission even when a thick layer of an electrically well conductive liquid appears between the plates of the isolating interface. | 12-16-2010 |
20110034143 | METHOD AND CIRCUIT FOR A FAST REDUCTION IN VOLTAGE OF A DC COMPONENT AND LOW-FREQUENCY COMPONENTS AT A MIXING CIRCUIT OUTPUT IN A RECEIVER OF A UHF TRANSCEIVER - A difference between an output current signal (mos) of the mixing circuit (MC) and a current from a controlled current source (CCS) is conducted to an input of an operational amplifier (A). A control voltage (cv) for said current source is a voltage at the output of the operational amplifier (A) being filtered by a low-pass filter, whose limiting frequency equals a low frequency limit of the modulation signal in the received signal (rs). The method is speeded up in that the limiting frequency of the low-pass filter is increased by two to three orders of magnitude at the beginning and is gradually lowered to said value. A rather short time duration of the transient process is achieved so that the working point with a low voltage of the DC component and low-frequency components is set at least five times faster than so far. | 02-10-2011 |
20110254750 | METHOD AND CIRCUIT FOR TRANSMITTING AND RECEIVING RADIO WAVES WITH A SINGLE OSCILLATORY CIRCUIT ANTENNA - Output terminals (o | 10-20-2011 |
20110298588 | RFID TAG WITH AN IMPROVED COMMUNICATION BETWEEN AN EXTERNAL LOGIC ELEMENT CONDUCTIVELY CONNECTED THERETO AND AN INTERROGATOR AS WELL AS A METHOD FOR SUCH COMMUNICATION - A memory access arbiter (MAA) in an RFID tag is connected to an unique address space (UAS), which comprises a non-volatile memory (NVM), a transferred data memory (TDM) and a status-information memory (SIM) storing information on the status of the transferred data memory (TDM). The transferred data memory (TDM) and the status-information memory (SIM) are volatile memories, e.g. of the RAM type having a memory capacity of 16 bits or 32 bits according to the standard of an applied RFID communication. The RFID tag of the invention provides for a faster communication between an interrogator and an external logic element by one order of magnitude, which is due to fast volatile memories for transferred data as well as for corresponding status information. A still higher communication rate is achieved by introducing a command that has not yet been standardized. | 12-08-2011 |
20120045022 | METHOD AND CIRCUIT FOR AMPLITUDE MODULATION OF A CARRIER SIGNAL WITH A SPECIFIED MODULATION FACTOR - An amplitude of a carrier signal at an output of an impedance matching block is measured as a first amplitude value. A value of the signal amplitude at the output of the impedance matching block is calculated as a second amplitude value that a signal resulting from amplitude modulation with said modulation factor from said carrier signal should assume, said carrying signal having an amplitude with the first amplitude value. A setting of a transmitter is changed to decrease the carrier signal amplitude at the output of the impedance matching block. An amplitude of a new carrier signal at the output of the impedance matching block is measured as a new amplitude value. The transmitter setting keeps changing so many times until the new amplitude value is equal to or lower than said second amplitude value or within a predetermined tolerance range around said second amplitude value. Parameters of the last new transmitter setting are stored as the parameters of the transmitter setting, by means of which the transmitter will generate a transmitted signal being amplitude-modulated in the specified manner. The setting of the amplitude modulation with the specified modulation factor is carried out automatically. The designing of the transmitter circuit is simplified. | 02-23-2012 |
20120112888 | METHOD OF COMMUNICATION OF AN ACTIVE SMART RFID LABEL WITH A USER INTERROGATOR AND A PROFESSIONAL INTERROGATOR - A method of communication of an active smart RFID label with a user interrogator and a professional interrogator, said professional interrogator enabling a service provider to fully control said active smart RFID label and by means of which interrogator a content and a form of an extract of data, which are collected by a sensor, which is comprised of in the label, as well as a location within the label as location of said extract of data being collected by said label sensor, said location being accessible by the user interrogator are determined. | 05-10-2012 |
20130003712 | Method and circuit intended for high-frequency communication between an interrogator and a smart tag - When communicating with a traditional interrogator of passive smart tags, an actively transmitting smart tag of the invention, even within a data frame being transmitted, observes a first phase (Φi) being a phase of a voltage induced in a tag's antenna by an interrogator's high-frequency carrier signal and transmits wave packets in that it excites the antenna with a voltage having a phase (Φt), which is always set at the beginning of transmission of each said wave packet shifted with respect to said first phase (Φi) by the same phase angle (ΔΦ). At ΔΦ=180° an amplitude of voltage across an interrogator's antenna, when some of said wave packets influence this antenna, attains the largest attainable interference rise. Miniature actively transmitting smart tags are enabled to wirelessly communicate with said traditional interrogator and a communication range of pocket-sized tags is herewith increased. | 01-03-2013 |
20140247118 | METHOD FOR AN ACQUISITION OF DATA FROM EXTERNAL DIGITAL SENSORS WITH AN RFID SMART TAG AND A TAG INTEGRATED CIRCUIT FOR CARRYING OUT SAID METHOD - A microprogram for performing communication between an RFID smart tag and external digital sensors (EDS | 09-04-2014 |
20140335813 | METHOD FOR REDUCING AMPLITUDE NOISE IN A RECEIVED SIGNAL WITHIN AN RFID INTERROGATOR - A method is performed for a signal transmitted by an RFID interrogator being a radiofrequency electromagnetic sine wave. An amplitude noise contribution RSd | 11-13-2014 |
Patent application number | Description | Published |
20150183138 | RAPID NON-CONTACT ENERGY TRANSFER FOR ADDITIVE MANUFACTURING DRIVEN HIGH INTENSITY ELECTROMAGNETIC FIELDS - A method and apparatus for additive manufacturing that includes a nozzle and/or barrel for extruding a plastic material and a supply of polymeric working material provided to the nozzle, wherein the polymeric working material is magnetically susceptible and/or electrically conductive. A magneto-dynamic heater is provided for producing a time varying, high flux, frequency sweeping, alternating magnetic field in the vicinity of the nozzle to penetrate into and couple the working material to heat the material through at least one of an induced transient magnetic domain and an induced, annular current. | 07-02-2015 |
20150183159 | LARGE SCALE ROOM TEMPERATURE POLYMER ADVANCED MANUFACTURING - A manufactured component, method and apparatus for advanced manufacturing that includes a nozzle for extruding a working material, wherein the polymeric working material includes a carbon fiber reinforced polymer. The build of the component takes place on a work surface at atmospheric temperatures. | 07-02-2015 |
20150183164 | RAPID ELECTRO-MAGNETIC HEATING OF NOZZLE IN POLYMER EXTRUSION BASED DEPOSITION FOR ADDITIVE MANUFACTURING - A method and apparatus for additive manufacturing that includes a nozzle for extruding a plastic material and a supply of polymeric working material provided to the nozzle, wherein the polymeric working material is magnetically susceptible and/or electrically conductive. A magneto-dynamic heater is provided for producing a time varying, high flux, frequency sweeping, alternating magnetic field in the vicinity of the nozzle to penetrate into and couple the working material to heat the material through at least one of an induced transient magnetic domain and an induced, annular current. | 07-02-2015 |