| 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 |
| 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 |
| 20110241842 | METHOD FOR A BATTERY AND PASSIVE POWER SUPPLY TO AN RFID TAG AND A SWITCHING CIRCUIT FOR CARRYING OUT SAID METHOD - A controlled switching circuit (csc) comprises two controlled switches (cs | 10-06-2011 |
| 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 |
