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81. 发明专利

JP3233979B2 失效
公开(公告)号：JP3233979B2
公开(公告)日：2001-12-04
申请号：JP12467992
申请日：1992-05-18
IPC分类号： H04B3/00 , H04L12/28 , H04L12/407

82. 发明专利

JP2001318876A COMPUTER PERIPHERAL EQUIPMENT FOR COMMUNICATING VIA UNIVERSAL SERIAL BUS WITH HOST COMPUTER SYSTEM AND METHOD FOR THE SAME 失效
公开(公告)号：JP2001318876A
公开(公告)日：2001-11-16
申请号：JP2000399357
申请日：2000-11-22
申请人： TEXAS INSTRUMENTS INC
发明人： CHRISTISON GREGORY LEE , KARLSSON MAGNUS G , HUMPHREY NORAYDA N
IPC分类号： G06F13/12 , G06F13/38 , H04L12/407 , H04L29/10
摘要： PROBLEM TO BE SOLVED: To provide USB peripheral equipment for executing the service quality (Quality of Service: QoS) schedule of communication. SOLUTION: An end point (240, 240') for communicating message data with a host computer is selected according to a priority order scheduler (137) for an ATM transmission controller (132) arranged in an interface function (28) of USB peripheral equipment, and connection-less communication is performed by an IP protocol, for example. At that time, an isochronous end point (240') is related with a message which is sensitive to the delay such as constant bit rate(CBR) communication, and a bulk end point (240') is related with a message which is insensitive to delay by various bit rate(VBR), an available bit rate(ABR), and an undesignated bit rate(UBR) communication.

83. 发明专利

JP3167328B2 失效
公开(公告)号：JP3167328B2
公开(公告)日：2001-05-21
申请号：JP50715892
申请日：1992-04-03
IPC分类号： H04J13/00 , H04J13/18 , H04L12/407 , H04L12/28

84. 发明专利

JP2001036531A DATA TRANSFER CONTROLLER AND ELECTRONIC EQUIPMENT 失效
公开(公告)号：JP2001036531A
公开(公告)日：2001-02-09
申请号：JP20124899
申请日：1999-07-15
申请人： SEIKO EPSON CORP
发明人： ISHIDA TAKUYA , KANBARA YOSHIYUKI
IPC分类号： G06F13/38 , G06F13/00 , H04L12/28 , H04L12/40 , H04L12/407 , H04L12/64 , H04L13/08
摘要： PROBLEM TO BE SOLVED: To prevent stall, etc., of firmware processing due to generation of reset by distinguishing whether a received packet is a packet received at different reset intervals or not and writing each received packet and each generated distinguishing information in a packet storage means by relating each packet to each distinguishing information. SOLUTION: A RAM 80 by which random access is enabled and to store the packet, buses 90, 95, 99, 100 to be mutually separated and a mediation circuit 74 to connect the buses with a bus 110 of the RAM 80 are provided. An interval from one bus reset and the next bus reset is defined as a bus reset interval. The interval from the bus reset M to M+1 becomes the reset interval of M and the interval from the bus reset M+1 to M+2 becomes the bus reset interval M+1. Whether the received packet or the packet received next is the one received by different reset interval or not is distinguished.

85. 发明专利

JP3106927B2 失效
公开(公告)号：JP3106927B2
公开(公告)日：2000-11-06
申请号：JP26439195
申请日：1995-10-12
IPC分类号： G01M17/007 , H04L12/407 , H04L12/40

86. 发明专利

JP2000092089A DATA TRANSMISSION SYSTEM 失效
公开(公告)号：JP2000092089A
公开(公告)日：2000-03-31
申请号：JP25694298
申请日：1998-09-10
申请人： TOSHIBA CORP
发明人： SHIOBARA YASUHISA
IPC分类号： H04L12/407 , H04L12/02 , H04L12/28 , H04L12/40
摘要： PROBLEM TO BE SOLVED: To transmit a transmission frame within a predetermined time without affecting communication of an Ethernet transmission station by specifying part of transmission stations as a synchronous transmission station that periodically transmits start timing of an implicit token path. SOLUTION: Real time Ethernet transmission stations RETH 101, 102,..., 10K, 111, 121, 131, 141, 11n-14n of the data transmission system and general Ethernet transmission stations ETH 20m,..., 20n, 210, 211-21n, 231-23n are interconnected by a transmission line L. Then a specific transmission station in the data transmission system is specified as a synchronous transmission station that periodically transmits the start timing of an implicit token path. Especially in the case that the synchronous transmission station is not yet decided at a leading point of time of the data transmission system, a new synchronous transmission station is specified among the transmission stations of the data transmission system.

87. 发明专利

JP2956712B2 失效
公开(公告)号：JP2956712B2
公开(公告)日：1999-10-04
申请号：JP230991
申请日：1991-01-11
申请人： NIPPON DENSHIN DENWA KK
发明人： MANO FUMIO , OKADA KENJI
IPC分类号： H04B10/40 , H04B10/07 , H04B10/50 , H04B10/60 , H04B10/80 , H04J3/00 , H04L12/40 , H04L12/407 , H04L12/44 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28

88. 发明专利

JPH10210039A METHOD AND DEVICE FOR COMMUNICATION CONTROL 失效
公开(公告)号：JPH10210039A
公开(公告)日：1998-08-07
申请号：JP723397
申请日：1997-01-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OTA KAZUHIRO , OMI SHINICHIRO , NAGAISHI YASUO
IPC分类号： H04H1/02 , H04J1/00 , H04L12/28 , H04L12/40 , H04L12/407 , H04N7/16 , H04N21/437 , H04N21/61
摘要： PROBLEM TO BE SOLVED: To provide the method and device for communication control which can change down channel and up channel groups in a two-way communication system using a line network of a cable television or the like. SOLUTION: A master station uses one channel 13 out of plural down channels 11 to 13 to transmit messages destined for slave stations 2 to 4. Each of slave stations 2 to 4 checks whether there is a prescribed ID in an inputted signal or not while switching the down channel to channels 11, 12,... in a prescribed order. If the prescribed ID is not detected within a prescribed time, the down channel is switched to the next channel. As the result, slave stations 2 to 4 maintains the connection to the down channel 13 where the prescribed ID is included in the inputted signal. Each slave station selects an up channel group to be used in accordance with a channel number included in the signal inputted from the down channel.

89. 发明专利

JPH10207834A SERIAL INPUT/OUTPUT CIRCUIT 失效
公开(公告)号：JPH10207834A
公开(公告)日：1998-08-07
申请号：JP665397
申请日：1997-01-17
申请人： MITSUBISHI ELECTRIC CORP , MITSUBISHI DENKI SYS LSI DES
发明人： FUJITAKA SHIGEAKI , TAKASE HIROYASU
IPC分类号： G06F13/38 , G06F13/42 , H04L12/407
摘要： PROBLEM TO BE SOLVED: To prevent a wrong stop condition from being generated at the time of switching from a port input/output circuit to the serial I/O circuit, when an I2 C-bus system is actualized in combination with the port input/output circuit. SOLUTION: An initial value setting circuit 30 is added which is provided with a data terminal D for inputting data for setting an initial value and outputs the data inputted from the data terminal D to an output terminal OUT where transmit data to SDA is outputted when the serial I/O circuit 13 is placed in an operation inhibited state or transmit data outputted from the serial I/O circuit 13 to the SDA from the data terminal D when the circuit is placed in an operation allowed state.

90. 发明专利

JPH104395A PRIVATE WIRE COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH104395A
公开(公告)日：1998-01-06
申请号：JP17543596
申请日：1996-06-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ICHINOSE TADAO
IPC分类号： H04J13/00 , H04B1/707 , H04L12/40 , H04L12/407
摘要： PROBLEM TO BE SOLVED: To send video, aural and control signals among a plurality of devices through a couple of twisted pair wires by applying digital compression or expansion to aural and video signals in the case of a speech, applying time-division multiplex or demultiplex to a plurality of signals, applying spread spectrum modulation to the signals, limiting the frequency band of the signals subjected to spread modulation, applying inverse spread processing to the signals so as to demodulate the signals. SOLUTION: An aural signal received from a microphone 21 is compressed by a voice compression expansion section 23 and outputted to a protocol control section 28 and a video signal received from a camera 22 is compressed by a video compression expansion section 26 and outputted to the protocol control section 28. A control signal outputted from a control section 27 is given to the protocol control section 28. The compressed signals are subjected to time- division multiplex processing and the result is fed to a spread spectrum section 29. The spread spectrum section 29 sends a multiplexed signal to a couple of twisted pair wires (a) via a band pass filter 30.

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