摘要:
In a communication partner device (1) intended for the contactless transmission of digital data to be transmitted having a transmission circuit (2), the transmission circuit (2) comprises a modulation circuit (17) for the amplitude modulation of a carrier signal (CS), which modulation circuit (17) comprises a circuit stage (20, 20′) for producing a plurality of different resistance values (RW 1, RW 1′) that act on a signal output (TX1, TX2), which resistance values (RW1, RW1′) can be transformed, by means of a signal processing circuit (3) arranged to transform resistance values that belongs to the communication partner device (1), into transformed resistance values (RW2, RW2′), which transformed resistance values (RW2, RW2′) are responsible for damping a transmission coil (7) of the communication partner device (1) when modulated low-level carrier signal sections are generated in a modulated carrier signal.
摘要:
A communication method in a system having a reader and at least one transceiver, the method including the reader selecting a response signal strength level from a plurality of response signal strength levels; and establishing communication between the reader and the at least one transceiver at the selected response signal strength level.
摘要:
In a data carrier (1), there are provided modification means (19) for modifying, as a function of the distance between the data carrier (1) and the base station (4), the ratio of the duration of a load period (TB) to the duration of an off-load period (TE), at which ratio the data carrier (1) load-modulates the electromagnetic field (HF) generated by a base station (4).
摘要:
In a transponder (1) and its integrated circuit (2), there is provided a processcontrolling circuit (14) for controlling an inventory-making process for making inventories in a communication station, which process-controlling circuit (14) contains transmnissionparameter selecting means (31) that select a transmission parameter, preferably a time slot, by using a hash value (HV) and by using a part (byte x) of a distinguishing dataset (SN), the generation of the hash value (HV) taking place in the transponder (1) or in its integrated circuit (2).
摘要:
A communication device includes detection a detector (28) adapted to detect a value (V) which represents a maximum amplitude value of a data carrier signal (DS) produced by a data carrier as it moves through a communication range (KB) of the communication device along a predetermined path and received with the aid of a receiver (23) of the communication device. The detector is adapted to supply a detection signal (RS) upon detection of the value (V) representing the maximum amplitude value.
摘要:
A communication method in a system having a reader and at least one transceiver, the method including the reader selecting a response signal strength level from a plurality of response signal strength levels; and establishing communication between the reader and the at least one transceiver at the selected response signal strength level.
摘要:
In a communication partner device (1) intended for the contactless transmission of digital data to be transmitted having a transmission circuit (2), the transmission circuit (2) comprises a modulation circuit (17) for the amplitude modulation of a carrier signal (CS), which modulation circuit (17) comprises a circuit stage (20, 20′) for producing a plurality of different resistance values (RW 1, RW 1′) that act on a signal output (TX1, TX2), which resistance values (RW1, RW1′) can be transformed, by means of a signal processing circuit (3) arranged to transform resistance values that belongs to the communication partner device (1), into transformed resistance values (RW2, RW2′), which transformed resistance values (RW2, RW2′) are responsible for damping a transmission coil (7) of the communication partner device (1) when modulated low-level carrier signal sections are generated in a modulated carrier signal.
摘要:
In a data carrier (1), there are provided modification means (19) for modifying, as a function of the distance between the data carrier (1) and the base station (4), the ratio of the duration of a load period (TB) to the duration of an off-load period (TE), at which ratio the data carrier (1) load-modulates the electromagnetic field (HF) generated by a base station (4).
摘要:
In a signal processing circuit (3) for a contactlessly communicating communication partner device (1), there are provided a transmitted-signal path (9) and a received-signal path (10), the received-signal path (10) branching off from a branch point (AP) present on the transmitted-signal path (9), a filter stage (11) and a matching stage (12) connected downstream of the filter stage (11) being provided on the transmitted-signal path (9), the filter stage (11) having a resonant frequency that is in a frequency range the center frequency value of which matches an upper sideband frequency, and the branch point (AP) being situated between the filter stage (11) and the matching stage (12).
摘要:
Embodiments provide an integrated circuit device including a contactless integrated circuit inlay. The device includes a substrate, an integrated circuit coupled to the substrate, and a coil electrically coupled to the integrated circuit and coupled to the substrate. The coil includes a first conductive line disposed in multiple turns on the substrate and a second conductive line disposed in multiple turns on the substrate.