摘要:
A data carrier, in particular a smart card, is described and has at least one transmitting/receiving antenna and also a rectifier circuit connected downstream thereof and serving for providing a supply voltage for at least one circuit unit. A voltage regulating circuit is connected in parallel with the supply voltage terminals of the circuit unit. The voltage regulating circuit has an output at which a signal proportional to a regulating signal of the voltage regulating circuit can be tapped off. This output is connected to the control input of a controllable clock signal generator, which provides the clock signal for the at least one circuit unit.
摘要:
An integrated semiconductor circuit having a number of circuit units which are driven by a clock signal and can be operated both in parallel and in series is provided. A connection supplying the clock signal is connected to the clock input of the respective circuit units via respective controllable switching devices. The control inputs of the switching devices are connected to an output of a random signal generator, so that a circuit unit is operated in parallel or in series with one or more of the other circuit units on the basis of the random signal. A method of operating an integrated semiconductor circuit is also provided.
摘要:
A business object model, which reflects data that is used during a given business transaction, is utilized to generate interfaces. This business object model facilitates commercial transactions by providing consistent interfaces that are suitable for use across industries, across businesses, and across different departments within a business during a business transaction. In some operations, software creates, updates, or otherwise processes information related to a business transaction authorisation request and a rejected direct debits post processing initiation run business object.
摘要:
A business object model, which reflects data that is used during a given business transaction, is utilized to generate interfaces. This business object model facilitates commercial transactions by providing consistent interfaces that are suitable for use across industries, across businesses, and across different departments within a business during a business transaction. In some operations, software creates, updates, or otherwise processes information related to a BR boleto receivable and a BR nota fiscal authorisation request business object.
摘要:
A method for demodulating a voltage which has been ASK modulated by changing the amplitude between a low level and a high level, in particular for use during contactless data transmission from a card reader/writer to a smart card, is described. The method is distinguished, in that, in an initialization phase, a first mean value is produced from the high voltage level and a stored partial voltage derived therefrom in order to detect a change to a low voltage level. The change to the low voltage level represents a start value and is detected by a subsequent comparison of the modulated voltage with the first mean value. In a subsequent demodulation phase, a second mean value is produced from the detected low voltage level and the high voltage level in order to demodulate the modulated voltage by comparing the modulated voltage with the second mean value.
摘要:
A data transmission circuit having a station and a response circuit. The station has an amplitude demodulator as well as a primary coil with a signal generator for producing an alternating magnetic field at a carrier frequency. The response circuit has a secondary coil as well as an amplitude modulator for influencing a load on the secondary coil, and the amplitude modulator is configured such that the alternating magnetic field can be modulated with a data signal. Particularly when the data transmission circuit is mass-produced, situations frequently occur in which the data signal modulated onto the alternating magnetic field by the response circuit can no longer be reconstructed at the station end. The object of the invention is thus to provide a data transmission circuit of this generic type, which always operates reliably. According to the invention, the response circuit has a phase modulator for influencing the electrical characteristics of the secondary coil. The amplitude modulator and/or the phase modulator being configured such that it or they can be driven, in particular, by at least one activation signal.
摘要:
Methods and systems are provided for accessing, processing, and outputting data on a graphical output device for a user is provided. In one implementation, a method is provided that comprises presenting on the graphical output device a first portion of a data object in a window, wherein the data object contains a plurality of data object items, at least one of the data object items being sought by the user, and wherein the the data object contains more data object items than being presentable in the window at a given moment in time. The method may further include providing on the graphical output device first and second control elements in relation to the presented data object, the first and second control elements being arranged to be activated by means of a user-operated input device in order to generate first and second request signals, respectively, upon such activation. Further, the method comprises effecting, upon generating respective first or second request signals, a scroll step into a direction corresponding to the respectively generated first and second request signals having a predetermined step size towards the data object item sought by the user, and presenting another portion of the data object in the window at least partially differing from the first portion of the data object, the step size between subsequently presented portions of the data object decreasing in proportion with the number of generated first or second request signals to effect a series of one or more scroll steps towards the sought data object item among the data object items.
摘要:
The flat mount assembly, or transponder, has at least one semiconductor chip that is connected to an antenna for interchanging data and power with an electronic apparatus. The antenna is formed of two electrical conductors. A conductive layer is formed on the mount in overlapping relationship with the electrical conductors of the antenna. The overlapping conductive layer results in greater capacitive coupling between the electronic apparatus and the flat mount assembly.
摘要:
A data carrier, such as a smart card, has a coil for contactless reception of data and energy and for contactless transmission of data. A logic circuit processes the received, demodulated and decoded data. A first demodulator for demodulating received 100%-ASK-modulated signals and a second demodulator for demodulating received ASK-modulated signals with a modulation depth of less than 100% are provided. The second demodulator is triggered by the first demodulator in such a way that on reception of a 100%-ASK-modulated signal, it is deactivated by the first demodulator.
摘要:
A method for transmitting data between a terminal and a portable data carrier over a wire-free electromagnetic transmission link using a carrier signal which is 100% ASK-modulated in accordance with the data. The carrier signal serving as a clock signal for the portable the data carrier. The significance of an item of data is determined by a position of a shift keying point in the carrier signal within a time slot. The information content of the shift keying point corresponds to a number of N bits, N being greater than or equal to 2. The significance of the N bits is defined by a position of the shift keying point within 2.sup.N possible positions within the time slot. At the start or at the end of a time slot there is a zero time period in which no shift keying point which is assigned to the data to be transmitted occurs, in order to avoid an unacceptably long loss of the carrier signal.