| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Method for data transmission over an internal bus of a workstation apparatus with an internal bus for implementing the method, and an adapter circuit for the internal bus | US927800 | 1992-08-10 | US5289465A | 1994-02-22 | Alain Mouro; Michel Colin |
| A method of data transmission over an internal bus of a workstation, effecting communication of an interface coupler and a telephone line and devices adapted for various communication functions. The method employs the synchronization signal of a voice network to define 125-microsecond communication frames. Included in each 125-microsecond frame thus defined are a maximum of eight variable-length subframes corresponding to a maximum of eight devices. The first two bytes of each subframe are header bytes. Coded in the header bytes of each subframe are a device destination address, and length codes indicating the number of bytes of data included in the subframe and the number of active bits in the last byte. | ||||||
| 2 | Packet transmission apparatus and packet transmission method | JP11189090 | 1990-05-01 | JP2588488B2 | 1997-03-05 | JON DEEBISU PURAISU; RARUFU II RICHAADOSON |
| An improved Packet Assembler/Disassembler (PAD) (200) optimizes the assembling of characters into packets for transmission over a packet network (150). The PAD is arranged to operably connect to and receive character asynchronous data from one or more terminal instruments (600) operating in either a block transfer mode or an echoplexing mode. Characters received by the PAD from a terminal instrument operating in an echoplexing mode are forwarded with no PAD delay. Characters received by the PAD from a terminal instrument operating in a block transfer mode are similarly forwarded with no PAD delay and in full packets with the exception of the last few characters of each block of characters which only partially fill their respective packets. And these partially filled packets are quickly forwarded in a time period which just exceeds the period required for the reception of a single character at the rate of data reception from the terminal instrument. | ||||||
| 3 | Method and device for connecting data to communication medium by information packet | JP11189090 | 1990-05-01 | JPH02305041A | 1990-12-18 | JIYON DEEBISU PURAISU; RARUFU II RICHIYAADOSON |
| PURPOSE: To efficiently assemble asynchronous data by connecting an information packet including one of the discriminated number of groups to a communication medium in the case that a prescribed time elapsed after reception of one of the discriminatable number of groups before reception of the discriminatable number of groups from an asynchronous signal source. CONSTITUTION: A 'minimum' timer is given by a processor 210 so as to correctly operate a process, and the time when data should be made into a packet in a packet buffer memory 320 is correctly determined. A timer 330 is counted down up to 0 of expiration after being set to a selectable initial start value; and when the timer 330 reaches 0, it is given to the processor 210. The processor 330 quickly recognizes a break of reception of data from a terminal equipment and sends data stored in the packet buffer memory 320 at this time. Thus, the remote terminal equipment can approve reception of a data block more quickly. COPYRIGHT: (C)1990,JPO | ||||||
| 4 | Method for multiplexing data | JP26668290 | 1990-10-05 | JPH04144438A | 1992-05-18 | OKOCHI FUSAKICHI |
| PURPOSE: To process various multiplex format data by deciding the data timing of data multiplexing and that of data separation in respective channels to be multiplexed based upon timing data. CONSTITUTION: A data separating/multiplexing circuit reads out timing data with length specified by a leading address informed from a CPU from a ROM 6 in each frame and successively arranges transmission data TDs, TDv, TDd, TDe on the prescribed bit positions of frame data based upon the read timing data synchronously with a reference clock CKa and octet clocks SO1, SO2 to form transmission data TD1, TD2. The transmission data TD1, TD2 are outputted to a layer-1 signal processing part 1. Consequently, this system can correspond to plural multiplex formats only by one hardware. COPYRIGHT: (C)1992,JPO&Japio | ||||||
| 5 | Method for transmitting data through internal bus of work station, internal bus device for executing the method and adapter circuit for internal bus | JP28597789 | 1989-11-01 | JPH03147163A | 1991-06-24 | ARAN MUURO; MISHIERU KORAN |
| PURPOSE: To process voice and video messages by performing connection also to a multiplex protocol communication controller and a voice processor connected to the system bus of a work station through an internal bus connected to a coupler. CONSTITUTION: The work station of a microcomputer or mini computer type provided with a central unit M, a screen E and a keyboard C and provided with a mouse S depending on a case is connected to a local communication network LAN by a connection card. Also, the work station is directly connected to a telephone T and a public communication network for remote transmission and the voice messages or the digital messages of an image or data type are simultaneously transmitted or received. The work station can be connected regardless of the type of a telephone line, that is to the telephone line of an analog type, a Transcom type or an RNIS type. Thus, the voice messages or the video messages are processed as well. COPYRIGHT: (C)1991,JPO | ||||||
| 6 | 정보패킷형태로통신매체에데이타를결합하는장치및,패킷회로망을통해전송하는데이타처리방법 | KR1019900006078 | 1990-04-30 | KR100149860B1 | 1999-05-15 | 죤디프라이스; 랠프이.리챠드슨 |
| An improved Packet Assembler/Disassembler (PAD) (200) optimizes the assembling of characters into packets for transmission over a packet network (150). The PAD is arranged to operably connect to and receive character asynchronous data from one or more terminal instruments (600) operating in either a block transfer mode or an echoplexing mode. Characters received by the PAD from a terminal instrument operating in an echoplexing mode are forwarded with no PAD delay. Characters received by the PAD from a terminal instrument operating in a block transfer mode are similarly forwarded with no PAD delay and in full packets with the exception of the last few characters of each block of characters which only partially fill their respective packets. And these partially filled packets are quickly forwarded in a time period which just exceeds the period required for the reception of a single character at the rate of data reception from the terminal instrument. | ||||||
| 7 | Multiplexed data separation method | JP26668290 | 1990-10-05 | JP3092850B2 | 2000-09-25 | 房吉 大河内 |
| 8 | Isdn method to expand the range of the transmission path between the functional units of the subscriber terminal and the device | JP52314695 | 1995-03-02 | JP2958121B2 | 1999-10-06 | GAISUTSURAA ROORANTO; HERUBIHI KURAUSU; BURUSUTO NORUBERUTO |
| 9 | Isdn method to expand the range of the transmission path between the functional units of the subscriber terminal and the device | JP52314695 | 1995-03-02 | JPH09510838A | 1997-10-28 | ヴルスト、ノルベルト; ガイスツラー、ローラント; ヘルビヒ、クラウス |
| (57)【要約】 １以上のＩＳＤＮインターフェースについて、ＩＳＤＮ加入者端末の機能ユニットの間の伝送路の到達距離を拡大する方法及び装置。 大きな距離に亘って多種のＩＳＤＮサービスを伝送できる。 この装置は、端末及び網側においてＩＳＤＮインターフェースに接続されたプロトコル変換装置と、伝送手段及び伝送媒体から成り、該変換装置に関連する伝送チャンネル有する。 | ||||||
| 10 | Electronic conference terminal | JP6837294 | 1994-04-06 | JPH07284077A | 1995-10-27 | ONO KENZO |
| PURPOSE: To realize a small PC electronic conference terminal at a low cost by connecting an animation and a voice CODEC to a computer bus through the use of general use PC and a network control part for an ISDN line. CONSTITUTION: In an animation CODEC part 300, a video signal from a camera 51 is AD-converted 32, compressed and encoded 30 and these are fetched to a memory 13 in CPU 10. In a same way, in the voice CODEC part 400, a voice signal from a microphone 52 is A/D converted 42, compressed and encoded 40 and queuing to the memory 13 is conducted in PC 100. PC 100 transmits the animation and voice information of the memory 13 to the network control part 200. PC 100 separates AV multiplexed information from the control part 200 into voice, the animation, data and a bit assigning signal. Then, PC 100 respectively transmits voice information and animation information to the voice CODEC part 400 and an animation CODEC part 300. The CODEC parts 300 and 400 respectively conduct display in a display part 50 and drive a speaker 53. COPYRIGHT: (C)1995,JPO | ||||||
| 11 | JPH07502388A - | JP50987993 | 1992-11-26 | JPH07502388A | 1995-03-09 | |
| 12 | JPH0583939B2 - | JP28597789 | 1989-11-01 | JPH0583939B2 | 1993-11-30 | ARAN MUURO; MISHERU KORAN |
| 13 | Facsimile terminal | JP25629190 | 1990-09-26 | JPH04117067A | 1992-04-17 | HASEGAWA KENICHI |
| PURPOSE: To start facsimile communication as it is without fail even if the communication speed of a facsimile terminal differs from that of an opposite terminal by automatically switching the data transmission/reception speed when data from an opposite terminal cannot be received. CONSTITUTION: Data transmission/receptions executed via an ISDN line 10 by a transmission/reception means 12, and if a prescribed signal is not received within a prescribed period of time by the transmission/reception means 12, the abnormality of the data reception is judged by a reception state judgement means 14. When data reception is judged to be abnormal, the data transmission/ reception speed (communication speed) is automatically switched by a speed switching control means 18. Accordingly, the data transmission/reception speed of the terminal can be adjusted to that of the opposite terminal on a channel B. Thus, the facsimile communication can be executed as it is without fail even if the communication speed of the terminal differs from that of the opposite terminal. COPYRIGHT: (C)1992,JPO&Japio | ||||||
| 14 | Method and apparatus for the enlargement of the reach of the transmission channel between functional groups of an ISDN-user interface | US398446 | 1995-03-03 | US5673258A | 1997-09-30 | Klaus Helbig; Roland Geissler; Norbert Wulst |
| One, or more, ISDN interfaces have their reach extended without violating ISDN interface standards by a method which converts ISDN coded information which is to be delivered over an extended channel into binary coded data prior to transmission, transmitting the binary coded information to a receiver at an extended location and there, after storage, and assembly, converting the binary coded data into ISDN specific coded data for delivery to an ISDN interface. | ||||||
| 15 | ISDN interface unit with separate ring generator | US426383 | 1995-04-21 | US5563943A | 1996-10-08 | Tomoyoshi Takebayashi; Toshihiro Azami; Ryuichi Matsukura; Hiroki Hasegawa; Satoshi Okuyama |
| An ISDN interface unit interconnects a data processing unit, an ISDN, and an analog telephone and includes a ring sound controller for supplying a control signal to designate a generation of a ring of the analog telephone through a modular jack; a ring signal generator generating a ring sound; a switch selecting one of the ring sounds generated and supplying the ring sound to the analog telephone. Further, the ISDN interface unit comprises communication functions for the digital signal and for the voice band signal, a control channel signal sent from the ISDN line is interpreted, and one of the communication functions can be selected. | ||||||
| 16 | Teleconference terminal | US413631 | 1995-03-30 | US5512938A | 1996-04-30 | Kenzo Ohno |
| In the PC-based teleconference terminal 200 includes a PC 110 and a video codec unit 130, a network control unit 220 and an audio codec unit 240 which are all constructed on the same expansion board, with the video codec unit 130, the audio codec unit 240 and the network control unit 240 all connected to the computer bus 114 so as to be able to transfer audio data, video data, data and AV multiframes between themselves. The audio codec unit 240 is equipped with a audio clock generation unit 241 for generating an audio sampling signal of 8 kHz through self-excited oscillation. The CPU 111 in the PC 110 executes frame alignment by executing the AV multiplexer/separator software 212 stored in the memory 112 and executes the AV multiframe conversion and separation for H series recommendation on the CCITT, as well as adjusting any shortages or surpluses of reproduction audio data which arise due to synchronization slips between the audio sampling clock and the network clock by executing the synchronization slip control software 211. | ||||||
| 17 | Adaptor between ISDN basic rate access and switched-56 accesses | US234314 | 1994-04-28 | US5479405A | 1995-12-26 | Mark C. Koz; Jack W. Lix |
| The invention is an adaptor which permits using a digital telephone device with an incompatible telephone network access. In its most preferred embodiment, the present invention is an adaptor which permits an ISDN telephone device to exchange digital data with two Switched-56 Access. An ISDN Basic Rate Access interface circuit interfaces with the ISDN telephone device, while two Switched-56 Access interface circuit interfaces with two Switched-56 Access. The adaptor also includes a clock recovery circuit for synchronizing digital data transfers occurring between the ISDN Basic Rate Access interface circuit and the ISDN telephone device with the digital data transfers occurring between the Switched-56 Access interface circuit and the Switched-56 Access. In an alternative embodiment, the clock recovery circuit synchronizes digital data transfers between the ISDN Basic Rate Access interface circuit and the Switched-56 Access interface circuits rather than conversely as in the preferred embodiments so a Switched-56 telephone device may exchange digital data with an ISDN Basic Rate Access. | ||||||
| 18 | Facsimile terminal equipment having communication speed switch | US713162 | 1991-06-11 | US5477340A | 1995-12-19 | Kenichi Hasegawa |
| A facsimile terminal communicates facsimile data with an opposite facsimile terminal through an ISDN circuit. Even if the communication speed of the facsimile terminal is different from that of the opposite terminal, the facsimile terminal can surely exchange the facsimile data with the opposite terminal. The facsimile terminal includes a transmission and reception unit for transmitting and receiving data to and from the opposite terminal through the ISDN circuit, a receiving condition judging unit for judging or determining whether or not the transmission and reception unit receives data normally. The facsimile terminal also includes a speed switching instruction unit for providing a speed switching instruction when the transmission and reception unit does not normally or successfully receive data. In addition a speed switching control unit is provided for switching the communication speed of the transmission and reception unit from one speed to another according to the speed switching instruction. | ||||||
| 19 | ISDN interface unit | US799161 | 1991-11-27 | US5450412A | 1995-09-12 | Tomoyoshi Takebayashi; Toshihiro Azami; Ryuichi Matsukura; Hiroki Hasegawa; Satoshi Okuyama |
| An ISDN interface unit interconnects a data processing unit, an ISDN, and an analog telephone and includes a DMA request signal generation circuit for generating a DMA request signal from an 8 kHz clock signal from an ISDN line. In accordance with the request signal, PCM coded data input from the ISDN line is transferred, using DMA, to a memory of the data processing unit or vice versa, or the ISDN interface unit includes a code conversion circuit, data stored in the data processing unit are converted to nonlinear PCM coded data and transmitted to the ISDN line or vice versa. Further, the ISDN interface unit includes communication functions for the digital signal and for the voice band signal, a control channel signal sent from the ISDN line is interpreted, and one of the communication functions can be selected. | ||||||
| 20 | Equalizer for ISDN-U interface | US368239 | 1989-06-19 | US4995031A | 1991-02-19 | Sami A. H. Aly; Babak Sayar |
| A receiver for a digital data transmission system comprises a sampling device for sampling digital data signals received from a subscriber loop. A precursor equalizer connected to the output of the sampling device equalizes, in effect filters, the sampled digital data signal. A timing recovery circuit connected to the output of the precursor equalizer controls the sampling device in dependence upon the filtered digital data signal. The precursor equalizer has a difference equation such that the equalized digital data signal has at least one zero-crossing occurring substantially one baud before the main cursor of each pulse. For twisted wire pair subscriber loops, the precursor equalizer may have a different equation: ##EQU1## which produces a single precursor zero-crossing. Alternatively, the precursor equalizer may have a difference equation: ##EQU2## which produces two precursor zero crossings, y(n) being the input to the filter, w(n) its output, h.sub.0 the main cursor height before equalization and h.sub.-1 the precursor height before equalization. The latter precursor equalizer may be modified by multiplying each of the coefficients (h.sub.-1 /h.sub.0).sup.2 and h.sub.-1 /h.sub.0 by a factor ##EQU3## for more precise determination of the zero crossings. A (1-Z.sup.-1) filter may be provided ahead of the precursor equalizer. | ||||||
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