WO2004059931A1 - データ伝送システムおよびデータ伝送装置 - Google Patents
データ伝送システムおよびデータ伝送装置 Download PDFInfo
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- WO2004059931A1 WO2004059931A1 PCT/JP2003/016521 JP0316521W WO2004059931A1 WO 2004059931 A1 WO2004059931 A1 WO 2004059931A1 JP 0316521 W JP0316521 W JP 0316521W WO 2004059931 A1 WO2004059931 A1 WO 2004059931A1
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- signal
- master
- transmission device
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- information
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 311
- 238000004891 communication Methods 0.000 claims abstract description 128
- 238000000034 method Methods 0.000 claims abstract description 105
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 10
- 230000008054 signal transmission Effects 0.000 claims description 7
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- 238000012549 training Methods 0.000 abstract description 45
- 238000013507 mapping Methods 0.000 description 45
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0647—Synchronisation among TDM nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
- H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/06—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/10—Arrangements for initial synchronisation
Definitions
- the present invention relates to an optical transmission system. More specifically, the present invention relates to a ring-type network having a plurality of data transmission devices connected in a V-shaped manner. And a transmission system for transmitting data in one direction according to a predetermined protocol.
- Information communication used in the above-mentioned ring-type LAN which indicates a unified connection to devices or information terminals, etc.
- a communication pool there is, for example, Media ⁇ r1 ented Sy Stems ⁇ rans Port (hereinafter referred to as STMo ST) ⁇
- STMo ST Media ⁇ r1 ented Sy Stems ⁇ rans Port
- the T data transmission system shown in FIG. 12 includes a ⁇ data transmission device 100 a a ⁇ and transmission lines 300 a to n.
- Transmission One of P 100 a to n is a master T transmitter 100 a, and the other P is a slave chopper transmitter 1.
- Each transmission device 1 0 a-n is connected to the transmission line 3 0 0 a-n in a ring shape 0
- one-point transmission using an eight-valued V-pitched tablet is normally performed.0
- the eight-level mapping is performed.
- the data transmission by the selected digital collector means that more than one bit of data is transmitted.
- ⁇ -Switching of the data transmission method is generally performed according to the flow shown in Fig. 13 and Fig. 14 0 Then, the switching of the one-way transmission method is described in detail below.
- the master transmission device 100a which is a master, Generates a V signal for the PtJ period and transmits it to the data transmission device 100b. O The data transmission device 100b that received the V signal Then, the received cook signal is reproduced, and a cook period is established with the data transmission device 100a. Next, the copier transmission device 100b transmits the cook signal. Occurs and transmits to the communication device 100c. After that, the communication device 100cn performs the operation similar to that of the communication device 100b and
- the terminal transmission device 100a generates a training signal for determining the P level of the determination level serving as a reference for the terminal determination, and the data transmission device 100a generates the training signal.
- the transmission signal transmitted at o can be a V modulation signal for ⁇ 8-level V mapping, or a modulation signal for other systems. -Even if it is a ping signal, here it is a tray for 8-level mapping. O a signaling signal shall be transmitted o
- the signal transmission device 100b receiving the training signal uses the acquired training signal to determine the reference level for 8-valued mapping. O 3 and o
- the ⁇ transmission device 100b generates a training signal for ⁇ 8-valued V-Ping and transmits the signal to the next transmission device 100c.
- the devices 100C-n operate with the 7 "data transmission device 100b, and the training signals transmitted from the V data transmission device 100n are:
- the data transmission devices id. 100a arrives, the data transmission devices 100a-n in the relevant data transmission system are ⁇ octave-coded blocks.
- BX is set to the judgment level that is the basis of judgment
- the 7 "data transmission device 100a is configured to determine whether the T data transmission is to be performed with the octal mapping or other methods, and the other T data transmission devices 100b to n. Transmits an identification signal to the transmitter 100b to notify the
- the data transmission apparatus 100b that has received the identification signal determines whether or not the data transmission is to be performed by the error or deviation method based on the received identification signal. Place 1 0
- 0b generates a discrimination signal based on the judgment result and transmits it to the next transmission device.
- C n performs the operation of the data transmission device 100 b and
- Each of the ⁇ transmission units 100 a to n in the V-data transmission system recognizes the ⁇ V-data transmission system.
- the cutter transmission device 100a creates a training signal of the T-transmitter system recognized by each cutter transmission device, and transmits it to the data transmission device 100b. After that, in each of the data transmission devices, the same processing as the training process described in U is performed, so that each of the T data transmission devices 100a to n is transmitted to each of the data transmission devices 100a to n.
- the decision level which is used as the basis for determining the end of the transmission system used for communication, is set.o Thereafter, the communication of the data starts within the T transmission system. Disclosure of invention
- the ⁇ -training process is performed, and the judgment level determined by the tracing process is used.
- An identification process is performed to determine whether it is an 8-valued mapping or another method. With the training signal for the transmission method identified in the above identification process, Data communication is started after the training process is performed again, that is,
- the conventional data transmission system In the conventional data transmission system, two training processes are required. However, in the conventional data transmission system, the conventional data transmission system is required to perform the training process twice. This is because the identification processing for identifying the data transmission method cannot be performed until after the ringing processing has been performed.
- the target of the present invention is to perform a training process.
- the means for generating a master signal is used in the initial operation of the y-type network.
- a master signal is created as a mouth signal in which predetermined information is embedded, and the master transmitting means transmits the V signal generated by the master signal creating means to a ring-type network.
- the signal is output to a slave transmission device connected to the lower level in order to circulate the signal in the slave, and the slave receiving means transmits the signal to the master transmitter.
- the information obtaining means obtains predetermined information from the -y clock signal received by the slave receiving means.
- the master signal generating means generates a multi-pattern signal including predetermined information of the plurality of patterns, and the master transmitting apparatus transmits the multi-pattern signal.
- a determination means is further provided for determining which pattern of the cook signal is to be output to the master signal creating means, out of the above-mentioned y-y mask signals, The master transmitting means may transmit the puck signal of the pattern output from the determining means to the master signal generating means.
- the information acquirer may use a plurality of patterns of mouth signals and
- [' ⁇ ] is further provided with a storage means for storing the communication port, and the cook signal received by the slave receiving means and the signal recorded by the storage means are recorded. It is also possible to obtain predetermined information by determining whether the V-signal of the shifted pattern has been obtained by comparison.
- the information acquisition means may include a plurality of patterns representing the difference between the signal level of each symbol of the cook signal and the signal level of the symbol located next to the symbol.
- the memory means and the slave receiving means are used for each clock signal.
- a differential means for calculating a difference between a signal level of each symbol of the received signal and a signal level of a symbol located next to each symbol is further included.
- the memory means memorized and compared the pattern of the difference of the power signal and the V signal of the deviation notation. It may be characterized by obtaining predetermined information.
- the slave transmission device generates a slave V-clk signal that generates the same V-clamp signal of the pattern as the V-clamp signal of the pattern determined by the information acquisition means.
- the slave T-transmitter is connected to the master master transmitter and the cooker based on the V signal received by the slave receiving means.
- the information acquisition means further obtains predetermined information included in the cook signal based on the timing of the cooking cycle which the initial means has taken. O good for 5
- the predetermined protocol is MoST (Medi a o a r i e n t e d S y S t e m S T r a ns P o r t).
- each transmission device performs communication using an air signal.
- the predetermined information is information for switching the communication method for paging-type network.
- a multi-valued electric signal is transmitted, and the sru is used to determine the data included in the multi-valued biographic signal.
- the communication method for the ring type network is The present invention is not limited to a system, and the present invention is applicable not only to a system but also to a master transmission device that can be used in the system.
- the master signal generation means includes a ring-type network.
- a predetermined signal is embedded in the initial operation of the sock signal for obtaining a period of time between the slave transmitter and the transmitter.
- a master signal is created, and the master transmitting means is used to circulate the master signal created by the master signal creating means in the ring-type network.
- the master signal generating means generates a plurality of patterns of V signal including predetermined information of the plurality of patterns, and the master transmission unit transmits the plurality of patterns to the plurality of patterns.
- the master signal generating means generates a plurality of patterns of V signal including predetermined information of the plurality of patterns, and the master transmission unit transmits the plurality of patterns to the plurality of patterns.
- a decision means for deciding whether or not to output the lip signal of the tan to the master signal creation means is further provided, and in the master transmission means, the decision means determines the master V signal creation. Send the mouth signal of the pattern output by the means.o
- the predetermined protocol be M O S T (Med i a O r 1 e ⁇ t e d S y S t e s T r a n s P o r t).
- the fan is a mouth
- the communication method for jingle type NV It may be a fixed method with multiple judgment levels
- the present invention is not limited to a master transmission device, but is directed to a slave transmission device.
- the slave receiving means is a master transmission device.
- the information obtaining means for receiving the suck signal output from the data transmission device and for obtaining the predetermined information from the cook signal received by the slave receiving means may be used.
- the master data transmission device transmits ⁇ or deviation of V-signals of multiple patterns including predetermined information of multiple patterns in order to circulate through the y-type network.
- the information obtainer has: (1) further provided a recording means for recognizing the same signal as the cook signal of the plurality of patterns; (2) the cook signal received by the slave receiving means; ⁇ j By comparing the signal with the signal stored in the means to judge whether or not the cook signal of the non-return button has been obtained, the predetermined small report is obtained. Good
- the master transmission device transmits a signal of a plurality of patterns including predetermined information of the plurality of patterns in order to circulate the signals in a V-type network.
- the information obtaining means calculates the difference between the signal level of each symbol of the cook signal and the signal level of the symbol located next to the symbol in question. For each cook signal The difference between the signal level of each symbol of the -y signal received by the storage means and the signal received by the slave receiving means and the signal level of the symbol located next to the symbol.
- the difference obtained by the difference means is not compared with the pattern of the difference of the signal of the signal that the means is in charge of. By judging whether or not the tuck signal of the turn has been obtained, predetermined information can be obtained.
- the slave cook signal creating means creates the cook signal of the same pattern as the pattern V signal determined by the information acquisition means, and performs the slave transmit means. ⁇
- a master signal transmission device or another slave collector connected to the lower level of its own It may be transmitted to a transmission device.
- the synchronization means synchronizes the clock with the master T-transmitter based on the clock signal received by the slave reception means.
- the information acquisition means performs the synchronization. It is also possible to acquire predetermined information based on the timing and timing of the VQ synchronization taken by the means, which is included in the TEK signal, ⁇
- the synchronizing means takes a clock period with the master 7 "transmission device based on the nV signal received by the slave receiving means. Even if it is included in the back-up signal according to the timing of the clock synchronization taken by the synchronization means and the ring, o
- the predetermined pool is MOST (Med 1 aor 1 ented Sy Stems Trans Port). Also, the data is sent by air signal-better than o
- Predetermined information is information for switching the communication scheme in the ring-type network V-k.
- a multi-valued electric signal is transmitted.
- the communication method for the remote connection network may be a fixed method with multiple judgment levels for one-to-one communication.
- the master signal transmission device transmits a cook signal in which predetermined information is embedded to the ⁇ transmission device of each slave.
- the printer transmitter can acquire predetermined information in the IJ
- the master transmitter transmits the information with the white machine. There is no need to create a check signal based on the information, J, ⁇ , ⁇ that simplifies the internal configuration of the master transmission device.
- the slave-butter transmission device can determine the pattern of the pre-transmitted ⁇ V signal because the pattern of the ⁇ V signal is determined beforehand.
- the slave transmission device recognizes the non-return signal of the transmitted signal and compares the detected signal with the transmitted signal. To get information o , Signal signal
- the cook signal output from the master transmission device must not go around the ring-type network- ⁇ each slave transmission device receives A cook signal similar to the V cook signal is being created.o For this reason, if the ⁇ cook signal is long and deteriorates due to being transmitted through the transmission line, the problem may occur. birth
- the transmission device transmits the signal by the input signal.
- the information is embedded in the back-up signal, and it becomes possible to notify each slave transmitter of the information.
- the information on the communication method is in the initial operation stage. Since there are many cases that need to be notified, the information about the communication method is embedded in the cook signal. Information can be notified o As a result, the initial operation time can be shortened and the processing load on each transmission device during the initial operation can be reduced
- the communication method is a level-judgment method for the digital value of the transmitted data. For example, four-level mapping is used.
- a communication method based on the specified data and a communication method based on an 8-valued V-pinned V-data may be considered-information on these methods is generally ⁇ ⁇ V After the signal has been processed
- the notification is performed after the H-level determination processing (training processing) of the above determination level is performed. O After the notification is performed, the training processing of the notified communication method is performed. It needs to be re-trained twice.
- each slave transmitter since the above information is included in the backpack signal, at the stage when the backpack signal is transmitted, each slave transmitter transmits a communication scheme. O As a result, the training process only needs to be performed once.
- the specified information is embedded.
- the master clock transmission device to each slave transmission device.
- the master transmission device Since the master signal is transmitted, there is no need for the master transmission device to create information using a white machine and create a check signal based on the information. O
- the internal structure of the master transmission device can be simplified.
- information is embedded in the master signal transmission device for the MOsT master transmission device, and the information can be notified to each slave transmission device.
- information is embedded in the master transmission device by telecommunications, and the information is embedded in the V-block signal, and the information is notified to each of the slave V-transmission devices.
- information on the communication method is ⁇ many cases that need to be notified at the initial operation stage, so that the information for the communication method is embedded in the -y signal. It is possible to notify each slave data transmission device of information on the communication method at an early stage and at a stage.o As a result, the initial operation time can be reduced and Reduction of processing load on equipment 0
- the communication method is considered to be a method of determining the level of the digital value of the transmitted T-block. This is, for example, a quaternary value V.
- a communication method using a pinned T-taper or a communication method using an 8-valued mapping may be considered.o
- information corresponding to these methods is After the synchronization process for the signal is performed, it is notified after the above-mentioned judgment level setting process (training process) is performed. Later, the training process of the notified communication method is performed again. 0 Therefore, two trains are performed.
- the above-mentioned information is included in the cook signal, at the stage when the check signal is transmitted, ⁇ each slave transmission is performed. The device can recognize the communication method o As a result, the training process only needs to be performed once o
- a master signal transmitting device transmits a hook signal in which predetermined information is embedded to the T-channel transmitting device of each slave. Therefore, it becomes possible for each slave V-transmitter to acquire predetermined information in the training process.
- the slave transmission signal recognizes the pattern of the transmitted cook signal and compares the recognition with the transmitted cook signal. Get information o ie
- the pattern of the cook signal can be used to determine the pattern of the signal.
- the transmission device, 1 says that if it simply obtains information, the inside of it will be simple.
- each symbol is not used for the determination.
- the difference between the value of each symbol and the value of the next symbol of each symbol is used for the determination. Excludes the effects of fluctuations and differences in the DC component between and
- the cook signal output from the master transmission device does not circulate in the V-type network.
- the V transmitter creates a cook signal similar to the received cook signal, so that the check signal is long. Deterioration due to the transmission of the wire can cause problems.
- the slave transmitter device takes a pj period with the master transmitter device by a block signal.
- the communication method is said to be a method for determining the level of the digital value of the transmitted V data.
- the relevant method is, for example, four-valued mapping.
- V-type communication systems and 8-valued-mapping type communication systems are considered.
- Information on these methods is generally described as Notified after the Hi-Loss constant processing (trading processing) is performed at the above-mentioned judgment level after the signal has been subjected to the periodical processing.o And after the notification In addition, the communication method notified According to the present invention, it is necessary to perform the training process twice.
- each slave transmission device recognizes the communication method at the stage when the mouthpiece signal is transmitted. As a result, the Only one processing is required. 0 Brief explanation of drawings
- FIG. 2 is a block diagram showing a configuration of a data transmission device according to an embodiment of the present invention.
- FIG. 3 is a block diagram showing a detailed configuration of the transmission / reception unit according to one embodiment of the present invention.
- FIG. 4 is a block diagram showing a detailed configuration of a lock signal generation unit according to one embodiment of the present invention.
- FIG. 5 is a diagram showing the waveform of the turn 1 lock signal.
- Fig. 6 is a diagram showing the waveform of the pattern 2-port signal.
- Fig. 7 shows the data output from the difference section.
- FIG. 7 is a diagram showing data stored in R ⁇ ⁇ and a second ROM 0
- Fig. 8 is a block diagram showing the detailed structure of the pattern identification unit.
- Figure 9 is a diagram for explaining the operation of the shift register. is there .
- Figure 10 shows the initial operation of row 5 when the master data transmission device and the slave data transmission device were in the interception period until data communication was started. It is a flow chart o
- Fig. 11 shows that the data communication was started before data communication was started.
- the master data transmission device is a flowchart showing the initial operation performed by the slave data transmission device.
- FIG. 12 is a block diagram showing the entire configuration of a conventional data transmission system.
- FIG. 13 shows a conventional data transmission system, in which the master data transmission device and the slave data transmission device are used until the start of data communication.
- FIG. 3 is a diagram showing a signal flow between the device and the device.
- FIG. 14 shows a conventional data transmission system, in which the master transmission system and the slave data transmission system are used until the start of the data communication.
- FIG. 3 is a diagram showing a signal flow between the device and the device. BEST MODE FOR CARRYING OUT THE INVENTION Now, an embodiment of the present invention will be described below with reference to the drawings.
- FIG. 1 is a block diagram showing an overall configuration of a data transmission system to which the data transmission device according to the present embodiment is applied.
- the data transmission system uses a physical topology as a single ring, a topology, and multiple nodes as a single ring. • One-way ring with topological connection
- each node is configured by the cutter transmission devices 1a to 1n and the transmission lines 3a to ⁇ respectively.
- the system is connected in a V-shaped manner, and the transmitted data is transmitted in the direction via the transmission line 3an.
- To n are processed based on the data transmitted by the T-transmission system, and are connected to each other to output the result to the transmission system.
- One terminal is an information terminal device.
- (2) A to n are connected to each other.
- Device 1a to n ⁇ Connector 2a to n are integrally configured o
- Example 7 is as follows: Media Or1 Ented
- the data transmitted using MOST as the communication protocol is transmitted using the ⁇ frame as a basic unit
- the frames are transmitted in one direction one after another between each of the data transmission devices 1. That is, the data transmission device 1a is connected to the data transmission device 1a via the transmission line 3a.
- the data transmission device 1b outputs the V data to the V data transmission device 1C via the transmission line 3b.
- the devices 1c to n perform the same operation as the router 1b and output a T-block to the next router, and the router 1n The output data is input to the cutter transmission device 1a.
- the transmission lines 3a to n are connected to the Vistor coaxial cable.
- the cutter transmission devices 1 communicate with each other (metal), and when the data transmission system is powered on, the transmission time is ⁇ .
- One of the transmitters 1a is a master that transmits a signal based on the Vk of the white device, and the other transmitters 1b to n transmit the frequency to the Vk generated by the master.
- each data transmission device is provided with a quaternary mapped V data or an octal mapping.
- the communication is performed depending on the difference between the transmission device and the transmission device.
- the master's clearing device 1a is connected to each key.
- ⁇ N is notified ⁇ More specifically, the transmission device
- each of the transmission devices 1b-n is a quadruple-valued V-pin-coded V to the input signal for taking the clock. Include information for identifying whether communication is to be performed with a gap or not. ⁇ Transmit to each transmitter 1b-n ⁇
- FIG. 2 is a block diagram showing the configuration of the arteral transmission device 1.
- the collector transmission device 1 is composed of a controller 5 ⁇ a transmission / reception unit 10 and a microcomputer (M
- the controller 5 provided with the PU 15 is, for example, an LSI.
- the communication controller 5 is an example of a communication pool used in the transmission system. Where MOST is working If you don't, o
- the interface 5 performs processing based on the data transmitted from the data transmission system and sends the result to the data transmission system.
- the output device 2 is connected.o And the control ⁇ 5 is one of its functions. It converts to the protocol specified by Mo ST, outputs a digital termination TX to the transmission / reception unit 10, and outputs a ⁇ digital reception RX output from the transmission / reception unit 10. Input to 5 and transmit to the paid opportunity 2 o Transmission lines to be input / output to the transmitting / receiving unit 10
- the signal format of the quaternary-mapped data or the octal-mapped T-data specified by sr during the initial operation at the start of communication in the data transmission system ⁇ ⁇ is a gap 0
- the MPU 15 controls the controller 5, the transmission / reception unit 10, and the connection unit 7 based on each transmission mode of the filter transmission device 1.
- the MPU 15 Means that the T-transmitter 1 communicates with the quaternary-mapped data or communicates with the octal-mapped data. O Control processing, etc.
- the transmission / reception unit 10 is typically composed of an LSI. As shown in FIG. 3, a transmission signal generation unit 105, a lock signal generation unit 108, a selector 1 1 0 ⁇ S / P (Character Z parallel) conversion section 1 15 ⁇ M V ping section 1 2 0, selector
- P / S (parallel signal) conversion section 160 P / S (parallel signal) conversion section 160, clock reproduction section 165, difference section 170, magnitude judgment section 180, pattern discrimination section 185, and judgment
- Each component is classified into three types: a transmission system, a reception system, and a judgment system.
- the transmission system is skied. 0
- the transmission system is a sampling signal generator 105, a cook signal generator 108, a selector 110, and a S / P (serial parameter). (Rell) converter 1 1 5
- the cook signal generating unit 108 creates a cook signal for taking a clock V
- the first V clock signal generator 2 55, the second ⁇ clock signal generator 260, the selector 2 65, and the switch instructor are shown in 5.
- FIG. 4 shows the V signal generator 10
- the first clock signal generator 255 generates a pattern 1 V clock signal as shown in FIG. 5.
- FIG. 5 shows the waveform of the pattern 1 V clock signal. 0
- the power transmission signal is a signal that is used by each of the transmitters to take a period of time, and an eight-level M-V-Ping signal is transmitted to each of the transmitters. O This signal is for notifying that communication will be performed by the specified collector. O The relevant node. Tan 1 ⁇ No. 1 period consists of 8 symbols. Each symbol
- the pattern 1 cook signal is a ⁇ 8-level mapped signal ⁇
- the second signal generator 260 generates two patterns of V-signals as shown in FIG.
- the pattern 2 signal which is a graph showing a waveform, is a signal used when each transmission device takes a clock period. This signal is a signal for notifying each transmitter device that communication is to be performed with a quaternary-mapped transmitter.
- the signal has one cycle consisting of 8 symbols.
- the click signal is an 8-level-mapped signal.
- the selector 2665 is driven by the switching instruction section 2700 to generate a signal 1 ⁇ V O
- the switching instruction section 270 is used when the g machine can be used as a master. In accordance with the instruction, determine the type of ⁇ V signal to be output to the selector 2665. If the white machine is a slave, ⁇ Determine the type of the input signal to be output to the selector 26 65 ⁇
- the training signal generator 105 sends a decision level for 4-level mapping to each transmission device, and outputs
- One level is used to determine the judgment level for 8-level mapping.
- 'TM' Create a running signal o
- 0 5 is for the case where the white machine is the master.
- the tray for 4-level mapping or 8-level mapping is used.
- a white signal is created, and if the white machine is a sleigh, ⁇ according to the instruction of the judgment unit 190 ⁇ four-valued V Create a training signal for V ping o
- the selector 110 outputs the digital signal TX output from the controller 5 and the digital signal TX output from the training signal generator 105. 5 SZ
- the P conversion unit 115 is a communication protocol that converts the serial TX output from the controller 5 to the parallel transmission for multi-level transmission 5. Is a Mo ST, and when communication is performed with the 8-valued mapped terminal, 2 symbols of information can be obtained from the controller 5 in one symbol. Since the data is output as data TX, the S / P converter 1 15
- the M-V-Ping section 120 converts the training signal generated by the V-Training signal generation section 105 output from the S / P conversion section 115 into a ⁇ 8 value. Or, map to one of the quaternary symbols ⁇ ⁇ ⁇ Whether to map to an quaternary symbol or to a quaternary symbol Let's go
- My machine is the master! ⁇
- ⁇ is performed in accordance with the instructions of the judgment unit 190 o
- the selector 122 outputs either the data output from the mapping section 120 or the cook signal output from the ⁇ signal generator 108.
- 0 ⁇ -loff filter 1 2 5 is the band limitation of the transmitted signal ⁇ It is a waveform shaping filter to suppress intersymbol interference o For example, ⁇ ⁇ -loff rate
- the DAC 130 converts the signal band-limited by the LFO filter 125 into an analog signal.
- the transmission 3 transmits the plus and minus electric signals as one pair, so that each Mutual changes in the signals are canceled out by each other's electrical signals, which reduces the radiated noise from the transmission line 3 and the external electrical effects ⁇
- the receiving system is a differential receiver 140 ⁇ ADC (analog converter) 1
- PS parallel signal
- the difference receiver 140 converts the difference signal input from the transmission line 3 into a low-voltage signal and outputs it to the ADC 144.o As described above, a pair of conductors of the transmission line 3 In contrast, since the electric signal between the plus side and the minus side is transmitted as one key, the differential receiver 140 has the difference between the plus side and the minus side. The signal is judged from the difference.Effective against external electrical influences.o
- the ADC 145 is output from the differential receiver 140.
- m Convert pressure signal to V digital signal o
- the one-off filter 50 is a FIR filter for waveform shaping that removes noise of the V digital signal output from the ADC 145.
- a single-hole filter is used. 16 times the FIR filter is used.
- O In combination with the above-mentioned ⁇ Lou filter 150 on the transmitting side, there is no inter-symbol interference.
- mapping section 120 on the sending side plays back the filter to be mapped.o Reverse mark
- the difference processing applied to the ping section 1555 is performed based on the judgment level determined by the above-described training signal. The judgment level is ideally calculated based on the difference. Inverted mapping section 1
- the received signal is converted to a parallel V by the inverse mapping process in 5 o
- the PS conversion section 160 is judged by the inverse mapping section 15 5
- the parallel data is converted to a serial data RX and output to the controller 5.
- the click reproduction section 165 reproduces the transmission path close-up by reproducing the click component of the signal received from the transmission line 3 output from the ADC 144. ⁇
- the reproduced signal is used for signal processing on the receiving side. It is used as a signal for judgment processing in the judgment system described later.
- the decision system indicates that communication is to be performed on the transmitter where the transmitted and received signal is quaternary-mapped. Communication is performed using 8-valued mapped data.
- the division section 170 finds the value of the symbol of the digital signal output from the ADC 145 based on the clock reproduced by the clock recovery section 165. And the difference between the value of the symbol found at t Li and the value of the symbol found immediately at the point of time Li, and outputs the absolute value to the magnitude determination unit 180.More specifically, FIG.
- the pattern 1 V clock signal shown in Fig. 5 is +
- the magnitude judgment unit 180 judges whether the value output from the difference unit 170 is larger than a predetermined threshold value or not. For example, assuming that the predetermined threshold value is 5 and the ⁇ -data shown in FIG.
- the magnitude judgment unit 180 is placed in the part 2 and is smaller than the ⁇ threshold. And S, which indicates J, are output.
- the pattern identification section 1885 determines whether the V-block signal transmitted from the upper-level transmission device is a pattern 1 block signal or a 2 block block signal. As shown in FIG. 8, the shift register 20 5 ⁇ 1st comparison 2 1 0 ⁇ 1st ROM 2 15 ⁇ 1st power counter 2 25, as shown in FIG. Second comparison PO 2
- the shift register 205 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
- the shift register 205 stores ⁇ 8 Vh of data, which is shown in FIGS. 9 (b) and 9 (c).
- the shift register 205 is
- the ⁇ -first ROM 215 stores the V data shown in FIG. 7 (c). ) Is a T data output from the difference section 170 when the pattern 1 nV signal is input to the difference section 170.
- the first comparison 210 is made up of the data stored in the shift register 205 every time a one-bit signature is input to the shift Y-lens 205. 1 'is written in the first R 5M 2 15 and it is determined whether or not a match is made between 0 and 0. Comparator 210 outputs ⁇ 1 J indicating that the match has been made to first power counter 2 25. ⁇ On the other hand, if the two do not match, the first comparison twenty one
- the first force counter 2 25 is ⁇ output by the first comparison 2 10 ⁇
- the data shown in FIG. 7 (d) is stored in the second R ⁇ M 2 35.
- O The data shown in FIG. 7 (d) is: In the case of input to 0, ⁇ , the output of the difference section 170 is 0, and the 4th and 6th hundreds are Xs. However, this part can be either S or L, indicating that the fourth and sixth V are shown in Fig. 7 (b). Yo la 7 in Therefore, the value of L according to a predetermined threshold is a value that can be changed fluidly with S, and this part is used for judgment because it is not J,
- the second comparison 230 is stored in the shift register 205 every time a one-bit register is input to the shift register 205.
- the second comparison 230 is stored in the shift register 205. Is determined as to whether or not the first comparator and the second comparator are equal to each other, and if the two match, the second comparator is used. 230 is the second power counter-
- the second power center 240 is the factory output by the second comparison 230.
- the determination unit 190 is configured to transmit the data based on the output result output from one of the second power counters 240 and the first power counter 222. It is determined whether the received V signal is a not-a-way 1 ⁇ y signal or a pattern 2 ⁇ -pick signal. That is, the determination unit 190 performs communication by using an 8-valued mapping unit. Determine whether communication is to be performed based on the line or s 4-valued mapping data.o
- FIG. 7 shows the pattern identification section 18 5 in FIG.
- the eye to be sent to the device (the judgment process is performed on J). In each of the data transmission devices, the training process is not performed.
- the transmission device determines whether the signal level of the communication terminal is larger or smaller than the threshold value, or not, based on a rough judgment. O Discriminating the 1 ⁇ signal from the pattern 2 V V signal o
- Each processing shown in the present embodiment uses a computer to perform software processing. O It can be realized as a layer or each processing can be realized by using a node dedicated to row 5 and a layer circuit.
- Figs. 10 and 11 show the master V transmitter and slave slaves until T-master communication is started. This is a block diagram showing the initial operation of the transmission device.
- the master is the collective transmission device 1a and the slaves are the collective transmission devices 1b to n.
- the master end transmission device 1a M PU 15 determines whether to perform T0 communication with the 4-valued mapped data or the 8-valued mapped data (step S10). ) 0 Then data transmission equipment 1 a
- the values of the respective transmission devices 1a to 1n are V-set (steps S15 to S1). 0 5) ⁇
- the master transmitter 1a is the SPU MPU 1
- step 5 it is determined whether or not the communication method determined in step S10 is communication by a V-valued quaternary mapping (step S20). o If the communication is not based on quaternary mapped data, the process proceeds to step S25. 0
- step S30 If the communication is performed by a singed-valued V-collector, this processing proceeds to step S30.
- Step S2 the ⁇ -master data transmission device 1a starts communication by an octal-mapping collector.
- Step S2 5 Select a pattern 1 ⁇ signal that contains information (Step S2 5) o Step S2
- the MPU 15 notifies the switching instruction unit 270 of the cook signal generating unit 108 of the fact.o
- the switching instruction unit 270 is connected to the selector 265 with the intention of J. 1 V Clock signal generator 2 5 5 Controls the output so that it outputs the 1 clock signal. 5 This selects the pattern 1 V clock signal.
- the master's data transmission equipment 1a starts communication with the quaternary-mapped data.
- Step S30 Select the cook signal (Step S30) o
- the operation performed in the terminal transmission device 1a will be described in detail.
- Step S the master transmission device 1 a is Step S
- Step S35 Transmit the y clock signal selected in 25 or 30 (Step S35) o More specifically, the D clock signal output from the selector 122 is ⁇ ⁇ A predetermined process is performed between the differential filter 125 and the differential filter 135, and the signal is transmitted to the slave transmission device 1b.
- the slave data transmission device 1b waits after determining that the ⁇ V signal has been received.
- step S110 the master signal transmitted from the master transmission device 1a is terminated.
- the transmission signal is transmitted to the master transmission device 1b. This process is executed for step a.
- the determination system of unit 1b determines whether or not this signal is a pattern 1 ⁇ V signal (step S115). And explain the processing performed in the slave V-transmitter 1b.
- the ⁇ V signal transmitted from the master's 7 ′′ data transmission device 1 a is processed by the differential receiver 140 ⁇
- the ADC 145 performs a predetermined process, and the ⁇ Reproduction part 1 6 5 ⁇ Difference part 1 7
- the clock reproduction unit 16 5 which is output to 0, reproduces the clock V based on the peak signal, while the difference unit 17
- 0 is obtained by calculating the difference between the values of the signals of the V signal, based on the reproduction of the signal of the V / C reproduction section 16 5.
- the magnitude determination unit 1800 determines whether each T data output from the difference unit 170 is larger than a predetermined threshold, and determines the result of the determination. In particular, when the predetermined threshold value is 5, the pattern identification unit 1885 outputs the data to the input data shown in FIG. 7 (a). S
- the shift register 205 of pattern identification n185 has one of the two judgment results Enter by ⁇
- the first comparison 210 is a data indicating the pattern 1 V clock signal stored in the first ROM 215 and a data shift register 20.
- the second comparator 230 is connected to the second comparator 230 so as to output ⁇ 1J to the first power counter 225.
- the data indicating the pattern 2 V signal stored in the ROM 235 and the data stored in the shift register 205 are represented by J, and the shift register 20 Whenever one bit is input to 5 in the same field, the value is compared, and if there is a match, ⁇ 1J is output to the second power counter 240.
- the first power counter 2 25 5 is output from the first comparison 2 10 and outputs the number of ⁇ 1 J. o
- the second power counter 2 40 is on.
- the judging section 190 judges which of the power counters has received the notification, and the judging section 190 has a pattern when the notification is received from the first power counter 222. Judgment is made that a one-way signal has been received, and the transmission system recognizes that communication is performed by an 8-level-mapped pointer.
- the determination unit 190 determines that the pattern 2 V signal has been received, and returns to the completion transmission system. P 'recognizes that communication by the 4-value mapped data is performed ⁇ and the judgment unit
- step S115 190 notifies the connected component of the recognition result> -o, whereby the determination processing of step S115 is completed.
- step S115 Steady to return to H0 light of the shot
- the sock signal is a pattern 1 ⁇ V signal in step S115
- this processing proceeds to step S120.
- step S115 If the V signal is not a pattern 1 puck signal in ⁇ at step S115, this processing goes to step S125.
- the cook signal generator 108 selects and outputs the pattern 1 ⁇ cook signal (step S 12). 0) 0, the corresponding step S 1 2
- the V signal generator 108 selects and outputs the pattern 2 signal (step S 1 25).
- the processing performed in S125 is the same as that described above except that the instruction from MPu15 is changed to a notification from determination unit 190.
- the cook signal output from the cook signal generator 108 is output from the transmitter / receiver 10 of the slave transmitter 1b to the next y transmitter 1c.
- the transmission / reception unit 10 of the transmission device 1 c to ⁇ which is zero, the above-described steps S 110-
- the processing up to 130 is performed. Then, finally, the slab transmission device 1 ⁇ outputs the V signal to the master transmission device 1 a. ⁇ In response, the master's transmitter
- the U15 of the master transmission device 1a receives the V signal (step S40).
- the U15 of the master transmission device 1a receives the It is determined whether the communication method is communication based on the quaternary mapped data (Step S45) .0 In this determination, MPu15 ⁇ Quaternary mapping or
- Judgment is made based on the selection of 8-level mapping and shift 0 If the communication method is communication using a 4-level mapped filter, this process is not performed. If the communication method is not communication by the quaternary-mapped data o, the process proceeds to step S55.o
- the MPU 15 is a
- the MPU 15 sends the 8-level mapping to the modulation signal generation unit 105.
- the training signal output from the training signal generator 105 passes through the selector 110, and the S / P converter 110
- step S 6 ⁇ u the differential processing is performed between the drivers 135 and transmitted to the slave transmission unit 1b.
- Step S 13 5 the slave's signature transmission a * location 1b received the tracking signal after transmitting the tuck signal to step S130.
- Step S 13 5 the master _,,, Signal transmission equipment 1 b If a is received, this process goes to step S140.
- the slave transmission device 1b determines whether or not the communication method is a communication using a quaternary M-pinned data. (Step S 1 4 0
- step S115 This determination is the determination in step S115, and the determination unit 190 performs communication or 8-level mapping using a 4-level mapped 7 "unit. It is determined by the training signal generation unit 105 depending on whether the communication by the selected collector is recognized or not.o
- the slave T-transmitter 1b is connected to the inverse mapping unit 15 5 The mouth of the received training
- the binning signal generator 105 selects and outputs a training signal for four-level V-Ping (step S 1
- step S 1 45 is the processing performed in step S 50 and
- the sleep-sending transmitter 1b is connected to the inverse mask V Use the received training signal at the marking section 15 5, and use the 8-level mapped filter. Perform V-Ping processing for communication (Step S1 4 7
- Step S150 selects and outputs a sampling signal for ⁇ 8-level mapping. Note that the processing performed in step S155 is the same as the processing performed in step S555, and a detailed description thereof will be omitted.
- the slave transmission device 1b transmits the training signal output from the sampling signal generator 105 to the next slave data transmission device 1c. To send (Step S 1 5 5
- step S155 Since the processing performed in step S155 is the same as the processing performed in step S60, ⁇ detailed description is omitted.
- the master transmitter is not ready during the initial operation. Transmit to the slave transmission device of each slave. 0
- the data transmission device of each slave is
- the transmission equipment of each slave can be quaternary-mapped or octal-mapped by a quaternary-mapped unit. This makes it possible to recognize before communication whether the communication is to be performed by the router.In conventional transmission systems, it is necessary to perform two operations. The training process only needs to be done once.
- the communication is performed at a difference between the communication performed by the transmitter that has been quaternary-mapped to the back signal or the communication performed by the transmitter that has been occupied by the octal-mapped.
- the information on whether or not this is performed is embedded, but the value of the multi-valued M-Ping is not limited to this o Example X. If the value of the multi-valued M-Ping is 5 values It doesn't matter what, o
- information indicating whether communication is to be performed by a cook signal with a 4-level-mapped collector or an 8-level-mapped V-gated communication is not limited to this.
- the information embedded in the ⁇ V signal is transmitted to the slave transmission device at the time of initial operation. The information to be notified
- two types of peak signals a pattern 1 V signal and a non-directional 2 ⁇ signal
- the waveform is not limited to m.
- each symbol as shown in FIG. 7 is used. Compare the signal level difference between Turn signal and turn signal.
- the method of discriminating between a two-turn signal and a turn signal is not limited to this. More specifically 1 Comparison 2 1
- the second comparator 230 compares the values of the respective symbols of the received pocket signal to determine whether or not each of the symbols is equal to zero. Turn 1 tuck signal and pattern
- the data transmission system is capable of notifying each data transmission device of predetermined information for notifying the data one-time method or the like before performing the training process.
- the data is transmitted in the negative direction according to a predetermined pool. This is useful as a data transmission system that transmits data.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU2003296065A AU2003296065A1 (en) | 2002-12-25 | 2003-12-24 | Data transmission system and data transmission device |
EP03786247A EP1578077A4 (en) | 2002-12-25 | 2003-12-24 | DATA TRANSMISSION SYSTEM AND DATA TRANSMISSION DEVICE |
US10/536,256 US20060155816A1 (en) | 2002-12-25 | 2003-12-24 | Data transmission system and data transmission device |
JP2004562893A JPWO2004059931A1 (ja) | 2002-12-25 | 2003-12-24 | データ伝送システムおよびデータ伝送装置 |
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JP2002374214 | 2002-12-25 | ||
JP2002-374214 | 2002-12-25 |
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US (1) | US20060155816A1 (ja) |
EP (1) | EP1578077A4 (ja) |
JP (1) | JPWO2004059931A1 (ja) |
AU (1) | AU2003296065A1 (ja) |
WO (1) | WO2004059931A1 (ja) |
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WO2005048550A1 (ja) * | 2003-11-12 | 2005-05-26 | Matsushita Electric Industrial Co., Ltd. | データ受信装置、データ送信装置、データ送受信装置、およびデータ伝送システム |
US9720857B2 (en) | 2012-09-04 | 2017-08-01 | Mitsubishi Electric Corporation | Distributed I/O control system, distributed I/O control method, and master station and slave station for distributed I/O control system |
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CA2457174A1 (en) * | 2003-07-30 | 2005-01-30 | Matsushita Electric Industrial Co., Ltd. | Data transmission apparatus and data transmission system |
EP2664087B1 (de) * | 2011-01-11 | 2015-09-30 | Unify GmbH & Co. KG | Verfahren zur taktsynchronisation einer mehrzahl von baugruppen |
US9385858B2 (en) * | 2013-02-20 | 2016-07-05 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Timing phase estimation for clock and data recovery |
US9898438B2 (en) * | 2014-10-13 | 2018-02-20 | Samsung Electronics Co., Ltd. | Symbol lock method and a memory system using the same |
KR102334382B1 (ko) * | 2014-10-13 | 2021-12-03 | 삼성전자 주식회사 | 입출력 인터페이스에서 심볼 락을 수행하는 방법 및 장치 |
US20180041383A1 (en) * | 2016-08-02 | 2018-02-08 | Fife Corporation | Web Handling System |
CN108270652B (zh) * | 2017-12-29 | 2021-03-30 | 北京纳米维景科技有限公司 | 一种高速实时总线系统及其数据处理方法 |
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WO2005048550A1 (ja) * | 2003-11-12 | 2005-05-26 | Matsushita Electric Industrial Co., Ltd. | データ受信装置、データ送信装置、データ送受信装置、およびデータ伝送システム |
US9720857B2 (en) | 2012-09-04 | 2017-08-01 | Mitsubishi Electric Corporation | Distributed I/O control system, distributed I/O control method, and master station and slave station for distributed I/O control system |
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US20060155816A1 (en) | 2006-07-13 |
EP1578077A1 (en) | 2005-09-21 |
EP1578077A4 (en) | 2006-10-25 |
JPWO2004059931A1 (ja) | 2006-05-11 |
AU2003296065A1 (en) | 2004-07-22 |
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