摘要:
The invention relates to a method and a device for acquiring electronic information about transmission speeds between nodes of an acyclical network, in particular of an IEEE 1394 bus network, precisely one transmission link being present between in each case two of the nodes of the network, and a respective PHY transmission speed of the transmission link being determined by a minimum value of PHY speeds of the nodes of the network lying on the transmission link, in the case of the method the respective PHY transmission speed being determined for one subset of the transmission links in the network by acquiring the PHY speeds of the nodes lying on the transmission links and electronically acquiring minimum values of the PHY speeds; and the respective PHY transmission speed being electronically acquired for another subset of the transmission links, which is different from the one subset of transmission links, on the basis of one of the PHY speeds which have been determined for the nodes lying on the transmission links of the one subset, and electronic topology information about a topology of the network being electronically acquired using optimization means which are formed in a node of the network. The device is provided for carrying out the method.
摘要:
The invention relates to a network subscriber station and to a method for operating a network subscriber station for a network of distributed stations, particularly a network of IEEE 1394 network subscriber stations, which are connected by means of a data bus. The network subscriber station comprises at least three memory areas for operation-dependent interface configuration data and pointer means, which comprise electronic pointers to the at least three memory areas, and driver means for handling electronic data in the at least three memory areas and for electronic data transfer between the at least three memory areas.
摘要:
In order to request station-specific information in a network of distributed stations, it is proposed that a block read access operation (30) first be used to request the desired information. Should the requested network station react with an error code, the corresponding network subscriber station is not immediately removed from the “node information” table for the network. Instead, the station-specific information is then rerequested, but this time using word access operations (34). This measure allows network subscriber stations to be integrated into the “node information” table which support only word read access operations, but return unclear error codes, which are not fully compliant with the standard, in the event of block read access operations.
摘要:
A ball comprises a core and a surface that covers the core. The surface includes at least one groove having a depth, a length and a width, wherein the length of the groove is at least three times the width, and wherein the length of the groove extends at most fifty degrees across the surface of the ball. When the ball travels through the air, the groove trips and obstructs the flow of air across the ball's surface, increasing the air's drag on the ball. This increase in drag causes the ball to not travel as far as a regular ball when well hit, and opposes any spin imparted to the ball when hit. In addition, the surface of the ball generates a sound that mimics a whistle while air flows across the surface to warn others of the ball's flight.
摘要:
The invention relates to a method for processing a sequence of data packets in a receiver apparatus, in particular a sequence of audio and/or video data packets, as well as to a receiver apparatus. The method comprises the following steps: reception of a data packet in the sequence of data packets in the receiver apparatus via a data link; determination of identification information for the data packet, which information indicates the position of the data packet in the sequence of data packets; sorting of the data packet into a sequence of data packets to be processed in a queue corresponding to the identification information, with the data packets to be processed comprising the sequence of data packets; determination of a time value from a time marking of a first data packet to be processed in the queue and of a further time value from a time marking of a last data packet to be processed in the queue; determination of the time difference between the time value and the further time value; and transfer of at least the first data packet to be processed in the queue for processing to a processing device if the time difference is greater than or equal to a predetermined time threshold value.