JP6950259B2 - Synchronous processing system, signal processing system, synchronous processing method, and synchronous processing program - Google Patents

Description

The present invention relates to a synchronous processing system for transmitting and receiving frames, a signal processing system, a synchronous processing method, and a synchronous processing program.

In satellite broadcasting, signals based on broadcasting data transmitted from the signal processing devices of each broadcasting company (also called consignment stations) are processed by the signal processing devices of the consignment stations (also called uplink stations). It is transmitted to the broadcasting satellite. Each signal processing device of each consignment station and each of the signal processing devices of the consignment station operate at a timing based on the clock signal.

Therefore, the signal processing device of the consignment station receives the data transmitted from the signal processing device of each consignment station via the communication line, and the data is measured at the timing based on the reference clock signal which is the reference clock signal of the consignment station. Is processed for transmission and a signal for transmission to a broadcasting satellite is generated.

Patent Document 1 describes a transmission system that generates and transmits a transmission main signal in which a TLV (Type Length Value) packet is stored in a predetermined slot. Further, Patent Document 1 describes that a transmission slot device in a transmission system performs processing based on a transmission clock.

Patent Document 2 describes a method in which a transmitting side synchronizes a reference clock with data transmitted by an NTP (Network Time Protocol) server and transmits information indicating the clock, and a receiving side generates a clock signal based on the information. ing.

Patent Document 3 describes a system in which a transmitting side and a receiving side reproduce a clock signal based on data received from a broadcasting satellite.

Japanese Unexamined Patent Publication No. 2016-174299 Japanese Unexamined Patent Publication No. 2016-195380 Japanese Patent No. 5988529

There may be a difference between the cycle of each clock signal used in the signal processing device of each consignment station and the cycle of the reference clock signal used in the signal processing device of the consignment station. Then, in the process performed by the consignment station, there may be a problem that the data to be stored is not stored in the predetermined slot.

Therefore, in the system described in Patent Document 1, there may be a problem that data to be stored is not stored in a predetermined slot. Further, the system described in Patent Document 2 has a problem that a communication line for transmitting and receiving reference clock information must be prepared between a transmitting side and a receiving side, which requires a large amount of cost. In the system described in Patent Document 3, the signal processing device of each broadcasting company must receive the data transmitted by the broadcasting satellite, which also has a problem that a large amount of cost is required.

Therefore, the present invention can prevent problems caused by processing based on the reference clock signal even when the periods of the clock signal in the processing of the source and the reference clock signal generated separately are different from each other. It is an object of the present invention to provide a synchronous processing system, a signal processing system, a synchronous processing method, and a synchronous processing program capable of providing the same.

In the synchronous processing system according to the present invention, a receiving means for receiving a transmitted frame, a storage means for storing packets included in the frame received by the receiving means, and a reference clock signal which is a reference clock signal. A transmission frame generating means for generating a transmission frame in which a time packet for indicating a time is stored in a predetermined slot based on a packet stored in the storage means at a timing based on the above, and a predetermined transmission frame generating means for providing the time packet. The reference clock signal is a signal generated separately from the clock signal in the generation process and the transmission process performed at the source of the frame received by the receiving means. It is characterized by that.

The signal processing system according to the present invention is characterized by comprising a synchronous processing system of any aspect and a signal processing device including a modulation means for performing modulation processing on the transmission frame generated by the transmission frame generation means. ..

In the synchronization processing method according to the present invention, the packet included in the frame received in the reception step is stored at the timing based on the reception step for receiving the transmitted frame and the reference clock signal which is the reference clock signal. A transmission frame generation step of generating a transmission frame in which a time packet for indicating a time is stored in a predetermined slot based on a packet stored in the storage means, and communication with a predetermined server that provides the time packet. The reference clock signal includes a communication step to be performed, and is characterized in that the reference clock signal is a signal generated separately from the clock signal in the generation process and the transmission process performed at the source of the frame received in the reception step. ..

The synchronization processing program according to the present invention is included in the frame received in the reception processing at the timing based on the reception processing for receiving the transmitted frame to the computer and the reference clock signal which is the reference clock signal. A transmission frame generation process for generating a transmission frame in which a time packet for indicating a time is stored in a predetermined slot based on a packet stored in a storage means for storing the packet, and a predetermined time packet for providing the time packet. The communication process for communicating with the server is executed, and the reference clock signal is a signal generated separately from the clock signal in the generation process and the transmission process performed at the source of the frame received in the reception process. It is characterized by being.

According to the present invention, it is possible to prevent problems caused by processing based on the reference clock signal even when the periods of the clock signal in the processing of the source and the reference clock signal generated separately are different from each other. can.

It is a block diagram which shows the structural example of the signal processing system of 1st Embodiment. It is a block diagram which shows the configuration example of the transmission side signal processing apparatus. It is a block diagram which shows the structure of the synchronous processing system in 1st Embodiment. It is a block diagram which shows the configuration example of the receiving side signal processing apparatus. It is a flowchart which shows the operation of the transmission side signal processing apparatus. It is a flowchart which shows the operation of a synchronous processing system. It is a flowchart which shows the operation of the receiving side signal processing apparatus. It is a block diagram which shows the structural example of the synchronous processing system of 2nd Embodiment. It is a block diagram which shows the structural example of the synchronous processing system of 3rd Embodiment.

Embodiment 1.
The first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of the signal processing system 500 of the first embodiment.

As shown in FIG. 1, the signal processing system 500 of the first embodiment includes a synchronization processing system 300 and a receiving side signal processing device 400. The synchronous processing system 300 and the receiving side signal processing device 400 are connected to each other. The signal processing system 500 is installed in the contract station 600.

A transmitting side signal processing device 210 is connected to the synchronization processing system 300, for example, via a communication line. Further, a clock signal providing device 220 is connected to the transmitting side signal processing device 210. The transmitting side signal processing device 210 and the clock signal providing device 220 are installed in the consignment station 200.

The consignment station 200 is, for example, a station building of a broadcasting company. The consignment station 600 is, for example, a station building of a business operator that transmits a signal to a broadcasting satellite.

For example, data corresponding to video and audio is input to the transmission side signal processing device 210. The clock signal providing device 220 is provided with an oscillator that generates a signal having a frequency of, for example, 10 MHz. Then, the clock signal providing device 220 generates a clock signal having a frequency of 33.7561 MHz or the like based on the signal generated by the oscillator, and provides the clock signal providing device 210 to the transmitting side signal processing device 210.

The transmitting side signal processing device 210 generates and transmits an IP (Internet Protocol) packet based on the input data. The signal transmitted by the transmitting side signal processing device 210 is received by the synchronization processing system 300 via the communication line.

Further, as shown in FIG. 1, in this example, for the sake of simplicity of explanation, one transmitting side signal installed in one consignment station 200 and one synchronization processing system 300 installed in one consignment station 600. It will be described as assuming that the processing device 210 is connected. However, a plurality of transmitting side signal processing devices installed in each of the plurality of consignment stations may be connected to the synchronization processing system 300 installed in the consignment station 600.

The synchronization processing system 300 receives the IP packet transmitted by the transmitting side signal processing device 210. Then, the synchronization processing system 300 performs a transmission frame generation process for generating an appropriate transmission frame based on the IP packet.

Then, the receiving side signal processing device 400 generates a transmission signal based on the transmission frame generated by the synchronization processing system 300.

The generated transmission signal is transmitted by the transmission equipment 700 toward the broadcasting satellite. Then, the broadcasting satellite that receives the transmission signal transmits the broadcasting signal based on the transmitting signal, and the receiver that receives the broadcasting signal reproduces the video or audio based on the broadcasting signal, or is used for data broadcasting. Outputs data, program sequence information, electronic program guides, etc. The transmission equipment 700 includes, for example, a satellite communication antenna installed outside the station building of the contract station 600.

FIG. 2 is a block diagram showing a configuration example of the transmission side signal processing device 210. As shown in FIG. 2, the transmitting side signal processing device 210 includes an MMT (Moving Picture Experts Group (MMT) Media Transport) multiplexing unit 211 and a TLV multiplexing unit 212.

The MMT multiplexing unit 211 includes playback data, data broadcasting data, program arrangement information, and an electronic program guide (SI (Service Information) / EPG (Electronic), which are data corresponding to video and audio reproduced by the receiver. Data for Program Guide)) is input.

Then, the MMT multiplexing unit 211 multiplexes the input data with each other to generate an MMT packet which is an MMT format IP packet including each data.

An MMT packet generated by the MMT multiplexing unit 211 and an NTP packet containing data indicating the time are input to the TLV multiplexing unit 212. The NTP packet is received from, for example, an external NTP server. The TLV multiplexing unit 212 multiplexes the input MMT packet and the NTP packet with each other to generate a TLV packet which is an IP packet in a format including the packet.

Then, the TLV multiplexing unit 212 synchronizes the frame composed of the generated TLV packets with the TMCC (Transmission and Multiplexing Configuration Control) signal indicating the stream type and modulation method information of each slot in the frame. Send to 300.

FIG. 3 is a block diagram showing the configuration of the synchronization processing system 300. As shown in FIG. 3, the synchronization processing system 300 includes an input / output device 310 and a synchronization processing device 320. The synchronization processing system 300 may be realized by one device including the input / output device 310 and the synchronization processing device 320.

Then, the input / output device 310 includes a receiving unit (receiving means) 311, a distribution unit 312, a buffer unit (storage means) 313-1,313-2, a multiplexing unit (transmission frame generating means) 314, and a transmitting unit 315. include.

The receiving unit 311 receives the frame and the TMCC signal transmitted by the transmitting side signal processing device 210 via the communication line. The receiving unit 311 inputs the received frame and the TMCC signal to the distribution unit 312.

The distribution unit 312 inputs the TLV packet included in the input frame to the buffer units 313-1,313-2 in response to the input TMCC signal.

The input TLV packet is stored in the buffer units 313-1, 313-2. The buffer units 313-1, 313-2 are prepared according to the modulation method and the error correction rate applied to the TLV packet by the receiving side signal processing device 400. Specifically, in this example, the receiving side signal processing device 400 sets the error correction coding rate to 1/2 and stores the TLV packet to which the TLV packet to be modulated by the QPSK (Quadrature Phase-Shift Keying) method is stored. -2 and a buffer unit 313-1 for storing TLV packets to be modulated by the 16APSK (Amplitude and Phase-Shift Keying) method with an error correction coding rate of 7/9 are prepared.

The multiplexing unit 314 reads the TLV packet stored in the buffer units 313-1, 313-2 and generates a transmission frame including the read TLV packet.

The transmission unit 315 transmits the transmission frame generated by the multiplexing unit 314 to the receiving side signal processing device 400.

The receiving unit 311 and the transmitting unit 315 are realized by, for example, a communication circuit. The distribution unit 312 and the multiplexing unit 314 are realized by, for example, a CPU (Central Processing Unit) that executes processing according to program control, or a plurality of circuits. The buffer units 313-1, 313-2 are realized by, for example, a storage means such as a memory.

Further, as shown in FIG. 3, the synchronization processing device 320 includes a signal source 321 and a reference clock signal generation unit (reference clock signal generation means) 322, a counter clock signal generation unit (time clock signal generation means) 323, and the like. It includes a counter (counting means) 324 and an NTP packet generating unit (time packet generating means, data generating means) 325.

The signal source 321 generates a signal of a predetermined frequency. Specifically, the signal source 321 is an oscillator that generates a signal having a frequency of, for example, 5 MHz.

It is assumed that the oscillator of the signal source 321 and the oscillator provided in the clock signal providing device 220 are not processed to synchronize with each other. Therefore, the signal generated by the signal source 321 and the clock signal provided by the clock signal providing device 220 are generated separately from each other.

The reference clock signal generation unit 322 generates a clock signal (reference clock signal) provided to the receiving side signal processing device 400 and the input / output device 310, particularly the multiplexing unit 314, based on the signal generated by the signal source 321. do. The reference clock signal is, for example, a clock signal having a frequency of 33.7561 MHz or the like.

The counter clock signal generation unit 323 generates a clock signal (counter clock signal) provided to the counter 324 based on the signal generated by the signal source 321. Note that the clock signal for the counter is, for ^example, a clock signal having a frequency of ² 32 Hz.

The counter 324 counts up the count value based on the counter clock signal generated by the counter clock signal generation unit 323. Specifically, the counter 324 counts up the value shown in the NTP data received from the preset NTP server (not shown) at the timing based on the counter clock signal, and counts up the count value. To generate. Therefore, the counter 324 counts the number of cycles of the counter clock signal and adds it to the counter value.

The NTP packet generation unit 325 generates NTP data indicating the count value generated by the counter 324, and generates an NTP packet which is an NTP format IP packet including the NTP data. The NTP packet is, for example, an IP packet in the NTP format.

FIG. 4 is a block diagram showing a configuration example of the receiving side signal processing device 400.

As shown in FIG. 4, the receiving side signal processing device 400 includes a receiving unit 401, a modulation unit 402, and a transmitting unit 403.

The receiving unit 401 receives the transmission frame transmitted by the transmitting unit 315 of the input / output device 310.

The modulation unit 402 performs error correction processing and modulation processing of a predetermined modulation method on the transmission frame received by the reception unit 401 to generate a transmission signal which is a signal after each processing. In this example, the transmission frame is composed of 120 slots, and the TLV packets stored in the buffer unit 313-2 are stored in the first to 100th slots, respectively, and the code rate of error correction is set to 1/2. QPSK modulation processing is performed. The first to 100th slots are called high-level slots, which are slots having a larger transmission capacity. Further, TLV packets stored in the buffer unit 313-1 are stored in the 101st to 120th slots, respectively, and the error correction coding rate is set to 7/9, and 16APSK modulation processing is performed. The 101st to 120th slots are called low-level slots, which are slots having higher error correction capability.

The transmission unit 403 transmits the transmission signal generated by the modulation unit 402.

Next, the operation of the first embodiment will be described. FIG. 5 is a flowchart showing the operation of the transmission side signal processing device 210.

The MMT multiplexing unit 211 and the TLV multiplexing unit 212 in the transmitting side signal processing device 210 perform each processing at a timing based on the clock signal provided by the clock signal providing device 220.

The MMT multiplexing unit 211 superimposes the playback data, the data broadcasting data, the program arrangement information, and the electronic program guide data on each other to generate an MMT packet which is an MMT format IP packet including each data. (Step S101).

The TLV multiplexing unit 212 multiplexes the MMT packet and the NTP packet generated by the MMT multiplexing unit 211 in the process of step S101 with each other to generate a TLV packet which is an IP packet in a format including the packet (step S102). ..

Then, the TLV multiplexing unit 212 configures a frame with the generated TLV packet, and sends the configured frame and the TMCC signal indicating the stream type and the modulation method information of each slot in the frame to the synchronization processing system 300. Transmit (step S103).

FIG. 6 is a flowchart showing the operation of the transmission frame generation process by the synchronous processing system 300. The synchronous processing system 300 performs each processing at a timing based on the reference clock signal provided by the reference clock signal generation unit 322, except for the counter 324.

As shown in FIG. 6, the receiving unit 311 receives the frame and the TMCC signal transmitted by the transmitting side signal processing device 210 via the communication line (step S201). The receiving unit 311 inputs the received frame and the TMCC signal to the distribution unit 312.

The distribution unit 312 inputs the TLV packet included in the input frame to the buffer units 313-1,313-2 in response to the input TMCC signal (step S202). The TLV packet input to the buffer unit 313-1,313-2 is stored in the buffer unit 313-1,313-2. The distribution unit 312 inputs the TLV packet to the buffer unit 313-1 or the buffer unit 313-2 according to the input order, for example. Specifically, for example, the buffer unit 313-1 is prepared with a buffer corresponding to the first to 100th slots, and the buffer unit 313-2 is prepared with a buffer corresponding to the 101st to 120th slots. .. Then, the distribution unit 312 sequentially inputs the TLV packets according to the input order to the buffer corresponding to the number assigned to each slot. Then, the distribution unit 312 buffers the TLV packet included in the input frame according to the information of the modulation method of the stream of each slot in the frame, which is indicated by the TMCC signal, for example. , 313-2, which should be input to the buffer corresponding to the corresponding modulation method or the like. Specifically, the distribution unit 312 is a modulation method having a smaller number of multi-values capable of more reliably transmitting data, for example, a TLV packet based on an NTP packet according to a TMCC signal even if the radio wave propagation condition deteriorates. It is input to the buffer unit 313-1 which is a buffer corresponding to. Further, the distribution unit 312 is, for example, a buffer unit 313-2 which is a buffer for a TLV packet based on an MMT packet according to a TMCC signal and a modulation method having a larger number of multiple values so as to have higher transmission efficiency. Enter in.

The multiplexing unit 314 generates a transmission frame including the TLV packet stored in the buffer units 313-1,313-2 (step S203). In this example, the transmission frame is assumed to consist of 120 slots. Then, the multiplexing unit 314 configures a transmission frame so that, for example, a predetermined packet is stored in a predetermined slot.

Here, the multiplexing unit 314 configures the transmission frame so that the NTP packet is stored in the 101st slot. The oscillator of the signal source 321 and the oscillator provided in the clock signal providing device 220 are not processed to synchronize with each other. Then, the period of the clock signal provided by the clock signal providing device 220 of the consignment station 200 may be longer or shorter than the period of the reference clock provided by the reference clock signal generation unit 322 of the synchronization processing device 320. .. In such a case, a transmission frame in which the NTP packet is stored in a slot other than the 101st slot may be configured.

Therefore, when the multiplexing unit 314 stores the packet in the 101st slot in the process of step S203, the multiplexing unit 314 requests, for example, the NTP packet generation unit 325 to generate the NTP packet. The NTP packet generation unit 325 reads the count value from the counter 324 in response to the request. Then, the NTP packet generation unit 325 generates an NTP packet including NTP data indicating the read count value. Then, the NTP packet generation unit 325 transmits the generated NTP packet to the multiplexing unit 314. The multiplexing unit 314 generates a transmission frame in which the NTP packet generated by the NTP packet generation unit 325 is stored in the 101st slot.

The transmission unit 315 transmits the transmission frame generated in the process of step S203 to the receiving side signal processing device 400 (step S204).

FIG. 7 is a flowchart showing the operation of the receiving side signal processing device 400. The receiving side signal processing device 400 performs each process at a timing based on the reference clock signal generated by the reference clock signal generation unit 322 of the synchronization processing device 320.

As shown in FIG. 7, the receiving unit 401 receives the transmission frame transmitted by the transmitting unit 315 of the input / output device 310 (step S301).

Based on the transmission frame received by the receiving unit 401, the modulation unit 402 performs modulation processing of a predetermined modulation method on the carrier wave at a coding rate of a predetermined error correction according to each slot, and is a signal after the modulation processing. A transmission signal is generated (step S302).

The transmission unit 403 transmits the transmission signal generated by the modulation unit 402 (step S303).

According to the present embodiment, the transmitting side signal processing device 210 and the receiving side signal processing device 400 operate based on the separately generated clock signals, and the synchronization processing system 300 and the receiving side signal processing device 400 are separated from each other. It operates based on the reference clock signal and the counter clock signal based on the signal generated by the signal source 321. Then, the synchronization processing system 300 generates a transmission frame so that the NTP packet generated based on the counter clock signal is stored in a predetermined slot (101st slot in this example) based on the reference clock signal.

Therefore, a transmission frame in which an appropriate NTP packet is stored in an appropriate slot without installing an NTP server in the consignment station 600 or preparing a means for communicating with the NTP server each time a transmission frame is generated. Can be generated.

Then, since the receiving side signal processing device 400 operates based on the reference clock signal, the transmission signal based on the transmission frame can be appropriately transmitted.

Embodiment 2.
Next, the second embodiment will be described with reference to the drawings. FIG. 8 is a block diagram showing a configuration example of the synchronization processing system 800 according to the second embodiment.

The synchronization processing system 800 in the second embodiment is different from the synchronization processing system 300 in the first embodiment shown in FIG. 3 in that it includes a synchronization processing device 820 including an NTP server communication unit 823. Since the other configurations are the same as the configurations in the first embodiment, the other components are designated by the same reference numerals as the corresponding components in the first embodiment, and the description thereof will be omitted.

When the multiplexing unit 314 stores the packet in the 101st slot, the multiplexing unit 314 instructs, for example, the NTP server communication unit 823 to input the NTP packet. The NTP server communication unit 823 requests the NTP server to transmit the response NTP packet in response to the instruction of the multiplexing unit 314, receives the NTP packet transmitted in response to the request, and receives the received NTP packet. Input to the multiplexing unit 314.

The multiplexing unit 314 configures a transmission frame so that the NTP packet received by the NTP server communication unit 823 is stored in the 101st slot.

At least one of the multiplexing unit 314 and the NTP server communication unit 823 regenerates the NTP packet by appropriately changing the format of the NTP packet transmitted by the NTP server or reading the required data. It may be configured to do so.

According to the present embodiment, the transmitting side signal processing device 210 and the receiving side signal processing device 400 operate based on the separately generated clock signals, and the synchronous processing system 800 and the receiving side signal processing device 400 are separated from each other. It operates based on a reference clock signal based on the signal generated by the signal source 321. Then, the synchronization processing system 800 generates a transmission frame based on the reference clock signal so that the NTP packet received from the NTP server is stored in a predetermined slot (101st slot in this example).

Therefore, the receiving side signal processing device 400 can transmit a transmission frame including an NTP packet capable of indicating the time with higher accuracy.

Embodiment 3.
Next, the synchronous processing system of the third embodiment will be described with reference to the drawings. FIG. 9 is a block diagram showing a configuration example of the synchronous processing system of the third embodiment.

As shown in FIG. 9, the synchronization processing system 31 of the third embodiment includes a receiving unit 11, a storage unit 13, a transmission frame generation unit 14, and a communication unit 23.

The synchronous processing system 31 corresponds to, for example, the synchronous processing system 300 in the first embodiment shown in FIGS. 1 and 3. The receiving unit 11 corresponds to, for example, the receiving unit 311 in the first embodiment shown in FIG. The storage unit 13 corresponds to, for example, the buffer units 313-1,313-2 in the first embodiment shown in FIG. The transmission frame generation unit 14 corresponds to, for example, the multiplexing unit 314 in the first embodiment shown in FIG. The communication unit 23 corresponds to, for example, the NTP server communication unit 823 in the second embodiment shown in FIG.

The receiving unit 11 receives the transmitted frame.

The storage unit 13 stores the packets included in the frame received by the reception unit 11.

The transmission frame generation unit 14 transmits a time packet for indicating a time in a predetermined slot based on a packet stored in the storage unit 13 at a timing based on a reference clock signal which is a reference clock signal. Generate a frame. The predetermined slot is, for example, one of the low-level slots in the transmission frame, and specifically, for example, the 101st slot. The time packet is, for example, an IP packet in NTP format.

The communication unit 23 communicates with a predetermined server that provides a time packet. The predetermined server is, for example, an NTP server.

The reference clock signal is a signal generated separately from the clock signal in the generation process and the transmission process performed by the source of the frame received by the receiving unit 11.

The source of the frame received by the receiving unit 11 corresponds to, for example, the transmitting side signal processing device 210 in the first embodiment. Then, the generation process and the transmission process performed on the frame received by the receiving unit 11 correspond to, for example, the process of step S103 shown in FIG.

According to the present embodiment, the source of the frame and the transmission frame generating means operate based on the separately generated clock signals, and even if there is a difference in the periods of the clock signals of each other, they are synchronized. The processing system 31 generates a transmission frame in which a time packet is stored in a predetermined slot.

Therefore, it is possible to generate a transmission frame in which an appropriate time packet indicating the time with higher accuracy is stored in an appropriate slot.

11, 311 Output device 312 Distribution unit 313-1, 313-2 Buffer unit 314 Multiplexing unit 315, 403 Transmission unit 320, 820 Synchronous processing device 321 Signal source 322 Reference clock signal generator 323 Counter clock signal generator 324 Counter 325 NTP Packet generator 400 Receiving side signal processing device 402 Modulator 500 Signal processing system 600 Contract station 700 Transmission equipment 823 NTP server Communication unit

Claims (10)

Receiving means to receive the transmitted frame and
A storage means for storing packets included in a frame received by the receiving means, and a storage means.
Transmission frame generation that generates a transmission frame in which a time packet for indicating a time is stored in a predetermined slot based on a packet stored in the storage means at a timing based on a reference clock signal which is a reference clock signal. Means and
A communication means for communicating with a predetermined server that provides the time packet is provided.
Said reference clock signal, Ri separately generated signal der the clock signal in the generation process and the transmission process has been performed by the sender of the frame received by the receiving means,
When the transmission frame generating means stores a packet in the predetermined slot in the transmission frame, the transmission frame generating means instructs the communication means to request the predetermined server to transmit the time packet.
The communication means requests the predetermined server to transmit the time packet in response to the instruction, and inputs the time packet transmitted in response to the request to the transmission frame generation means. Processing system. It said communication means or said transmission frame generating means, based on the time packet transmitted from said predetermined server, according to claim 1, to regenerate the time packet to be stored in the predetermined slot of the transmission frame Synchronous processing system. The communication means or the transmission frame generating means regenerates a time packet to be stored in the predetermined slot of the transmission frame based on the data contained in the time packet transmitted from the predetermined server. The synchronous processing system according to claim 1. Receiving means to receive the transmitted frame and
A storage means for storing packets included in a frame received by the receiving means, and a storage means.
Transmission frame generation that generates a transmission frame in which a time packet for indicating a time is stored in a predetermined slot based on a packet stored in the storage means at a timing based on a reference clock signal which is a reference clock signal. Means and
A communication means for communicating with a predetermined server that provides the time packet is provided.
The reference clock signal is a signal generated separately from the clock signal in the generation process and the transmission process performed at the source of the frame received by the receiving means.
The communication means or the transmission frame generating means regenerates a time packet to be stored in the predetermined slot of the transmission frame based on the data contained in the time packet transmitted from the predetermined server.
A synchronous processing system characterized by that. The synchronization processing system according to any one of claims 1 to 4, wherein the time packet is an NTP type IP packet. The synchronous processing system according to any one of claims 1 to 5.
A signal processing system including a signal processing device including a modulation means for performing a modulation process on the transmission frame generated by the transmission frame generation means. The receiving step to receive the transmitted frame and
At the timing based on the reference clock signal, which is the reference clock signal, the time is indicated in a predetermined slot based on the packet stored in the storage means in which the packet included in the frame received in the reception step is stored. Transmission frame generation step to generate a transmission frame containing time packets for
Including a communication step of communicating with a predetermined server that provides the time packet.
Said reference clock signal, Ri separately generated signal der the clock signal in the generation process and the transmission process has been performed by the sender of frame received by the receiving step,
In the transmission frame generation step, when a packet is stored in the predetermined slot in the transmission frame, the communication means is instructed to request the predetermined server to transmit the time packet.
In the communication step, the communication means requests the predetermined server to transmit the time packet in response to the instruction, and receives the time packet transmitted in response to the request. Method. The receiving step to receive the transmitted frame and
At the timing based on the reference clock signal, which is the reference clock signal, the time is indicated in a predetermined slot based on the packet stored in the storage means in which the packet included in the frame received in the reception step is stored. Transmission frame generation step to generate a transmission frame containing time packets for
Including a communication step of communicating with a predetermined server that provides the time packet.
Said reference clock signal, Ri separately generated signal der the clock signal in the generation process and the transmission process has been performed by the sender of frame received by the receiving step,
In the communication step or the transmission frame generation step, a time packet to be stored in the predetermined slot of the transmission frame is regenerated based on the data contained in the time packet transmitted from the predetermined server. A synchronous processing method characterized by the fact that. On the computer
Receiving process to receive the transmitted frame and
At the timing based on the reference clock signal, which is the reference clock signal, the time is indicated in a predetermined slot based on the packet stored in the storage means in which the packet included in the frame received in the reception process is stored. Transmission frame generation process that generates a transmission frame in which time packets for
A communication process for communicating with a predetermined server that provides the time packet is executed.
Said reference clock signal, Ri separately generated signal der the clock signal in the generation process and the transmission process has been performed at the source of the frame received by the receiving process,
In the transmission frame generation process, when a packet is stored in the predetermined slot in the transmission frame, the communication means is instructed to request the predetermined server to transmit the time packet.
A synchronization processing program characterized in that, in the communication process, the predetermined server is requested to transmit the time packet in response to the instruction, and the time packet transmitted in response to the request is received. On the computer
Receiving process to receive the transmitted frame and
At the timing based on the reference clock signal, which is the reference clock signal, the time is indicated in a predetermined slot based on the packet stored in the storage means in which the packet included in the frame received in the reception process is stored. Transmission frame generation process that generates a transmission frame in which time packets for
A communication process for communicating with a predetermined server that provides the time packet is executed.
Said reference clock signal, Ri separately generated signal der the clock signal in the generation process and the transmission process has been performed at the source of the frame received by the receiving process,
In the communication process or the transmission frame generation process, a time packet to be stored in the predetermined slot of the transmission frame is regenerated based on the data included in the time packet transmitted from the predetermined server. A synchronous processing method characterized by the fact that.

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