Abstract: A disc control device for holding a plurality of read requests as a queue, arranging the read requests and a newly inputted read request, reading out the read requests from the queue in the arranged order, and controlling the output of the requested data from a disc, comprises a queue unit for temporarily holds the read requests as the queue in which the read requests can be arranged, the read requests requesting data readout from the disc; an allowable time hold unit holds allowable time, which shows how much more delay can be allowed in order to satisfy delay time until the end of the data output, of each read request in the queue, the delay time being decided based on the ranking in the read request in the queue; and an arrangement control unit arranges the read requests in the queue along with the newly inputted read request in the queue based on the allowable time of each read request in the queue, each time a new read request is inputted.

Abstract: A laser marking resin composition excellent in appearance of molded article and impact resistance which comprises:(A) 100 parts by weight of a rubber-reinforced vinyl resin consisting of:(A-1) 1 to 100% by weight of a rubber-reinforced resin having a grafting degree of 5 to 150% by weight obtained by polymerizing, in the presence of (a) 5 to 70% by weight of a rubbery polymer, (b) 95 to 30% by weight of at least one monomer selected from the group consisting of an aromatic vinyl compound, a vinyl cyanide compound, a (meth)acrylic acid ester, maleic anhydride and a maleimide compound, provided that (a)+(b)=100% by weight, and(A-2) 99 to 0% by weight of a polymer obtained by polymerizing at least one monomer selected from the group consisting of an aromatic vinyl compound, a vinyl cyanide compound, a (meth)acrylic acid ester, maleic anhydride and a maleimide compound, provided that (A-1)+(A-2)=100% by weight, the matrix resin in the component (A) having an intrinsic viscosity ?.eta.! of 0.1 to 1.

Abstract: A video server in which each media segment file sever (MSFS) stores media segment files (MSFs) forming video data, and sequence control brokers (SCBs) installed between the video server and subscribers terminals receive video requests from the subscriber terminals, and read out the requested MSFs from the MSFSs. The readout MSFs are exchanged by an ATM switch to be transmitted to the SCBs respectively, which outputs the MSFs at predetermined intervals to the request-sender subscriber terminals.

Abstract: A flow control device constructed at a switch device for connecting a plurality of ring networks for exchanging data of a cell among the ring networks. A user device for transmitting a cell carrying data is connected to each ring network, and it can transmit cells within a window counter number.