Abstract:
A device is disclosed for encoding a stream of data bits of a binary source signal (S) into a stream of data bits of a binary channel signal (C1), wherein the bit stream of the source signal is divided into n-bit source words (x1, x2), which device comprises converting means (LC) adapted to convert said source words into corresponding m-bit channel words (y1, y2, y3). Each n-bit source word together with another n-bit source word forms a pair of source words. The values of the n-bit source words differ only in the value of the bit in the qth bit position, q being a constant. The pairs of source words is divided into a first part of pairs and a remaining part of pairs. The converting means (LC) are further adapted to convert n-bit source words belonging to the first part of pairs into corresponding m-bit channel words, in such a manner that the conversion for each of said n-bit source words is parity preserving, and to convert n-bit source words belonging to the remaining part of pairs into corresponding m-bit channel words, in such a manner that the conversion for each of said n-bit source words is parity inverting (Table I) (FIG. 1). Furthermore, a decoding device is disclosed for decoding the channel signal obtained by means of the encoding device.
Abstract:
The invention relates to a substrate comprising a glass sheet (1) having a thickness which is smaller than or equal to 0.1 mm, the glass sheet (1) being provided with a layer of a synthetic resin material (2) having a thickness which is smaller than or equal to that of the glass sheet (1). This substrate proves to be flexible. In addition, the substrate cracks less easily, so that it can be processed more readily. The substrate may be used, for example, in light-emitting devices, such as a poly-LED or PALC.
Abstract:
The present invention is related to a communication system in which a transmitter (2) transmits cyclically a plurality of mutually related objects (20,22,24,26) to a terminal (10). If said objects are used in the terminal there is no mechanism to establish whether said objects are consistent, e.g. that they are originated at the same time. To ensure that the objects are consistent, they are combined in a common transport entity. The receiver is arranged to extract only the complete set of mutually related objects from the common transport entity. Consequently, the consistency is always ensured.
Abstract:
A multicast radio data communication system comprising a master (1) and a plurality of slave stations (2, 3, 4), and using a retransmission protocol. Data is transmitted by the master station and received by the slave stations. One slave station is designated the primary slave station, and all other slaves are designated secondary slave stations. Any slave station may transmit a negative acknowledgement but only the primary slave may transmit a positive acknowledgement. Positive and negative acknowledgements are transmitted substantially simultaneously. Negative acknowledgements corrupt reception of the positive acknowledgement by the master station, thereby ensuring that the data is retransmitted. The primary slave station is selected to have the lowest quality radio link, which may be ensured by a power control command from the master.
Abstract:
A cordless telephony device is disclosed which includes a base module and at least one handset module. Each of the modules includes a transmitting and a receiving circuit with scanning means for analyzing the various channels (N) in turns so as to examine whether a request for a connection has been emitted on a channel. A definition (L) of the channel used is indicated in the data of a request for a connection emitted by a transmitter. Each module includes means for searching for the channel number (L) in the received data during a scanning operation in the receive mode, and for immediately settling on the channel that carries this number (L) if this channel number L is different from that (N) of the analyzed channel.
Abstract:
The invention relates to a telecommunication system comprising at least one switching center (1), a plurality of subscriber stations (2, 3) and a call diversion activator (7, 8-11) for automatically activating a call diversion from a first subscriber station (2) to a second subscriber station (3) at predefined instants. To ensure a reliable activation and deactivation of a call diversion also for subscribers who desire a call diversion in time periods ending at variable instants, there is proposed for the first subscriber station (2) to comprise a signaling device (13) for signaling an activated call diversion to the second subscriber station (3) and a manually operable call diversion deactivator (7, 8-11).
Abstract:
A computer-animated image of a video model is stored for synchronized outputting with an audio wave. When receiving the audio wave representation, the model is dynamically varied under control of the audio wave, and outputted together with the audio wave. In particular, an image parameter is associated to the model. By measuring an actual audio wave amplitude, and mapping the amplitude in a multivalued or analog manner on the image parameter the outputting is synchronized.
Abstract:
The invention provides a parallel data processing device having an array of parallel processing elements (LPA1 . . . 320) for processing a signal to obtain parallel streams of data, and means (TSMM1 . . . 80) for shuffling the parallel streams of data in a block-wise manner. The data shuffling means (TSMM1 . . . 80) have an array of addressable switch memory matrices (TSMM1 . . . 80) which are each coupled to a predetermined number of processing elements (LPA1 . . . 320). The array of switch memory matrices (TSMM1 . . . 80) solves data flow limitations of highly parallel linear array processors as well as intermediate storage requirements of image processing algorithms. In a camera system the parallel data processing device is combined with a sensor array (S).
Abstract:
Various methods are disclosed for producing an edited MPEG audio/video stream from first and second streams recorded in a transport-stream format normally intended for broadcast purposes. According to one implementation, a bridge sequence is generated which recodes data from both of the original streams, in the region of the edit point. Padding packets are inserted in the elementary streams to adjust a continuity counter values so as to allow continuous decoding across the join between bridge sequence and second sequence proper. In another implementation, seamless playback is not required, the bridge sequence is omitted, and various process are implemented nullon-the-flynull to generate an edited stream compliant with MPEG-2 specification. To this end, exit and entry points are constrained to certain types of coded pictures, and offset between time-bases is adjusted to avoid buffer overflow.
Abstract:
A multiplexer circuit is disclosed for switching a selected one of a plurality of current inputs carried by respective input lines (2;101) to a common output. The circuit comprises, for each input line, a diode clamp (5;104) and isolation means (10;109) provided between each input line and the common terminal The diode clamp (5;104) is operable in a first mode in which voltages are applied to the clamp terminals such that the diodes (8,9;107,108) of the diode clamp are forward biased and hold the input line (2;101) at a first voltage which prevents the passage of current from the input line to the common output, and a second mode in which the voltages are applied to the clamp terminals such that the diodes of the diode clamp are reverse biased and the passage of the current from the input line to the common output is allowed. Only two connections, for the diode clamp, are needed to control the switching of the current input, and the switch introduces no current offset to the output.