摘要:
A method and a system for data transmission with mobile network nodes, which include at least two network interfaces with corresponding power consumption. A central unit is configured to receive data intended for the mobile network, and a first network interface of the mobile network node is deactivated. If the central unit receives data intended for the mobile network node, a signaling message assigned to the received data is transmitted to the mobile network node, by a signaling module, via a second network interface of the mobile network node. Based on the transmitted signaling message, the first network interface of the mobile network node is activated, and data, which are intended for the mobile network node, are transmitted via the first network interface to the mobile network node.
摘要:
Proposed are a method and a system for management of resources of portable resource modules (1, 1′), each connected to a communication terminal (2, 2′, 2″), which modules comprise electronic memory units (11) and are designed in particular as chipcards. A first resource management instruction comprising a module identification is transmitted to a resource management centre (4). A second resource management instruction is transmitted from the resource management centre (4) via a communication network (3) to the resource module (1) identified through the module identification. In the particular resource module (1), resources are made ready or released by a resource control mechanism (111) corresponding to the received second resource management instruction. A resource management confirmation is transmitted by the particular resource module (1) via the communication network (3) to the resource management centre (4), and in the resource management centre (4) information about the resources made ready or released is stored assigned to the module identification.
摘要:
Method for anonymously transmitting a message by means of a telecommunication network. A first exchange (2) between the sender (1) and the receiver (4) of said message replaces identifying features (MSISDN) of the sender (1) of the message by a first alias identification (CID). The conversion between the said identifying features (MSISNDN) and the first alias identification (CID) is permanent, or at least secure for several weeks.The first alias identification (CID) is replaced by a second alias identification (CMID) at the receiver (4) or in a further exchange (3). The second alias identification (CMID) enables the receiver to identify the transmitter.
摘要:
Method for anonymously transmitting a message by means of a telecommunication network. A first exchange (2) between the sender (1) and the receiver (4) of said message replaces identifying features (MSISDN) of the sender (1) of the message by a first alias identification (CID). The conversion between the said identifying features (MSISNDN) and the first alias identification (CID) is permanent, or at least secure for several weeks. The first alias identification (CID) is replaced by a second alias identification (CMID) at the receiver (4) or in a further exchange (3). The second alias identification (CMID) enables the receiver to identify the transmitter.
摘要:
In a sampled data transmitting apparatus in which the sampled data to be transmitted are divided into odd-numbered samples and even-numbered samples and arranged in different rows of a two-dimensional data array, and in which error correction codes are annexed to each row and to each column of the two-dimensional data array, the row arraying sequence in one of the odd-numbered or even-numbered rows is caused to differ from the row arraying sequence in the other of the odd-numbered or even-numbered rows so that odd-numbered data and even-numbered data continuous with the odd-numbered data are not arranged in one row. In this manner, even when error correction becomes impossible by the error correcting code for one row, interpolation remains feasible because there exist no odd-numbered data or even-numbered data contiguous to each other in the row.
摘要:
A sampling frequency converter converts sampled input data having an input sampling frequency into sampled output data having a different output sampling frequency. The relative ratio between input data sample periods and output data sample periods is determined and averaged over a predetermined duration. A filter coefficient generator responds to the averaged input/output sampling period ratio for generating data representing a set of predetermined filter coefficients which are used by a sampling filter circuit to convert the input data samples into output data samples of a different sampling frequency.
摘要:
Recording apparatus for forming a track on a disk-shaped recording medium capable of optical information reproduction, comprises a deflection device for deviating a recording beam from a light source in a radial direction of the disk-shape recording medium and a deflection-control signal generating device. The deflection control signal is developed from the superimposition of a first signal having a predetermined frequency and a second signal having a lower frequency than the predetermined frequency. The superimposition of the second signal can be done while retaining the predetermined frequency.
摘要:
Using the inventive method and apparatus, two scanning sequences can be synchronized with small signal delays and at the smallest possible apparatus expense. The time differences between associated scanning values or signals of the two scanning sequences are compensated by alternatingly delaying relative to each other the scanned values or signals and interpolating between the scanned values or signals of one of the two scanning sequences. The apparatus for carrying out the synchronizing operation comprises a storage for producing the delays and a filtering device for performing the interpolation.
摘要:
In producing an edited tape (31) the lead-in material up to a first edit point is separated from the lead-out material running from a second edit point by a space containing unwanted material and accommodating the actual or notional splice. The unwanted material ensures correct operation of error protection for all of the wanted material on replay. The first and second edit points are marked by codes placed on the tape (31) by a code processor (43) and supplementary head (42). During replay the digital data recovered from the tape by a head (32) is entered into a random access buffer store (34) under control of a write address generator (38) and read out to output electronics (37) under control of a read address generator (39) running at the audio sampling rate. The write address generator (38) normally runs at a rate corresponding to tape speed but the code processor detects the codes for first and second edit points and a control unit (51) stops the write address generator (38) between such points so as to discard the unwanted material. The store is then replenished by speeding up the tape by a comparator (40) and speed control unit (10) in an arrangement which preserves a constant relationship between the read and write addresses, i.e. a constant degree of filling of the memory (34).
摘要:
The invention relates to an authorization verification method and devices suited therefor, which play back authorization data via a user interface (11) of an electronic playback device (1). During the playback of authorization data via the user interface (11) of a first playback device (1), the playback attributes are modified. The playback of authorization data via the user interface (11) of the first playback device (1) is compared with the playback of reference data via a user interface (21) of a second electronic playback device (2). Authorization is granted in the event the playback of authorization data via the user interface (11) of the first playback device (1) matches the playback of reference data via the user interface (21) of the second playback device (2), and modifications of the playback attributes are, in essence, time-synchronized. The dynamic modification of the playback attributes during the playback of authorization data and playback of the reference data render practically impossible the unauthorized copying of image contents or audio contents for falsifying an authorization. In addition, a simultaneous playback of authorization data and reference data render unnecessary inquiries made to an authorization center (3).