摘要:
An internal timing information producing portion produces internal timing information IRTS1 to IRTS4 which is the timing information on a data reception clock by using a network clock C.sub.N and the data reception clock C.sub.RU. A calculator calculates the difference between the internal timing information IRTS1 to IRTS4 and the transmission timing information RRTS1 to RRTS4 contained in a received cell, and a data reception clock producing portion adjusts the timing of the data reception clock C.sub.RU so that the difference is zero and outputs the adjusted timing. An ATM cell decomposing portion outputs the user data D.sub.RU in synchronism with the data reception clock C.sub.RU which is input from the data reception clock producing portion.
摘要:
An internal timing information producing portion produces internal timing information IRTS1 to IRTS4 which is the timing information on a data reception clock by using a network clock C.sub.N and the data reception clock C.sub.RU. A calculator calculates the difference between the internal timing information IRTS1 to IRTS4 and the transmission timing information RRTS1 to RRTS4 contained in a received cell, and a data reception clock producing portion adjusts the timing of the data reception clock C.sub.RU so that the difference is zero and outputs the adjusted timing. An ATM cell decomposing portion outputs the user data D.sub.RU in synchronism with the data reception clock C.sub.RU which is input from the data reception clock producing portion.
摘要:
A plurality of input lines are respectively connected to separate multiplexing units that are connected in cascade by cascading lines. Select signals are transferred in parallel with fixed length packets over the cascading lines. Each separate multiplexing unit is responsive to a select signal received from the cascading line to select one of fixed length packets received over the corresponding input line and the upstream cascading line and output it over the downstream cascading line. The most downstream separate multiplexing unit provides a multiplexed output of the input lines.
摘要:
An apparatus for absorbing an arrival time delay of a fixed length packet, equipped with a first-in, first-out type memory, a fixed length packet writing unit for reading out information stored within fixed length packet and for writing into the first-in, first-out type memory, a first-cell detection unit for detecting the fixed length packet which is first received, a read-out timing generation unit for, in the case where the first-received fixed length packet has been detected with the first cell detection unit, generating read-out timing that shows read-out initiation following a prescribed time lapse, and a read-out unit for, in the case where read-out timing has been generated with the read-out timing generation unit, initiating the read-out of information stored within the first-in, first-out type memory.
摘要:
A communication terminal is coupled to a communication network via transmitting and receiving signal lines and a switching system. The communication terminal includes a power input line coupled to the transmitting and receiving signal lines, a power sink for supplying power, a switch coupled between the power input line and the power sink, a hook switch coupled between the power input line and the power sink in parallel to the switch, a detection circuit coupled to the receiving signal line for detecting a signal on the receiving signal line, a state maintaining circuit coupled to the switch and the detection circuit for closing the switch and for maintaining the switch in a closed state by carrying out a state maintaining operation when a signal is detected by the detection circuit, and a prohibit circuit coupled to the detection circuit for prohibiting a signal detection of the detection circuit.
摘要:
A system for controlling a bandwidth when receiving and reassembling a consecutive data stream transferred while segmented by AAL1 format cells which enables correct determination of non-P and P formats and reassembly of cells even when error arises in multiple bits including the CSI bit of an AAL1 cell or when adding dummy cells and thereby enabling prevention of a gap in data in a frame, comprising, in a data reassembly unit which reassembles received cells, an 8-cell buffer for storing 8 cells of a cycle of a sequence count (SC) of 0 to 7 and sending the cells out to a later stage after a check unit of a sequence number (SN) field confirms normalcy of the cells and a control unit for control so that the number of P format cells stored in the 8-cell buffer becomes 1 cell when 8 cells are stored in the 8-cell buffer.
摘要:
The quality and performance of the connectionless communications system are improved. When a BOM is received, the destination address DA of the L3-PDU stored in the payload of the BOM is retrieved, and the tag information is obtained from the DA (S11). The output message identifier MID is reserved (S12), and the tag information and output MID are assigned to the BOM (S13). Then, the tag information and output MID are written to the table. When a COM is received, the tag information and output MID are retrieved using the MID of the COM as a key, and the information is provided for the COM (S31 and S32). When an EOM is received, the tag information and output MID are retrieved using the MID of the EOM as a key, and the information is provided for the EOM (S41 and S42). Then, the output MID is released (S43).
摘要:
In cell transfer in which cells are sent at uniform intervals, in a case in which 18 cells have been lost between cell A (SN=2) and cell B (SN=5), every time 8 times the expectation value T of the cell arrival interval elapses after the arrival of cell A a dummy cell having the same sequence number as cell A (SN=2) is written into the cell FIFO section. Cells or dummy cells are stored in the cell FIFO section in the order SN=2, 2, 2, 5. When cells or dummy cells are read out of the cell FIFO section in order, if the sequence number SN=2 appears twice in a row, dummy data are created corresponding to the cells SN=3, 4, 5, 6, 7, 0, 1; if the sequence number SN=2 is followed by SN=5, then dummy data are created corresponding to SN=3 and 4.
摘要:
A communication control unit includes a central processing unit, a peripheral circuit part for operating the central processing unit, a line interface part for carrying out a call control, a data communication part for controlling a data terminal, a line system bus which couples the central processing unit, the peripheral circuit part and the line interface part, a data system bus which is coupled to the data communication part, an interprocessor interface part which is coupled to the data communication part, and a bus selector part which is coupled to the line system bus, the data communication part and the interprocessor interface part. The bus selector part bypasses the interprocessor interface part and couples the line system bus to the data communication part in a single mode in which the central processing unit controls both the line interface part and the data communication part, and said bus selector part couples the line system bus to the data communication part via the interprocessor interface part in a multi mode in which the central processing unit controls the line interface part and another central processing unit controls the data communication part via the data system bus.
摘要:
A chewing gum which has a preventative effect against infection by influenza virus and inhibits dissemination of influenza virus. The chewing gum comprises adding at least 0.03 weight % of at least one tea polyphenol, for a chewing gum containing no organic acids; the chewing gum comprises at least 0.01 weight % of at least one tea polyphenol for a chewing gum containing at least one organic acid.