JP2020174228A - High-speed signal transmission device, high-speed signal transmission system, high-speed signal transmission method, and program - Google Patents

Abstract

To provide a high-speed signal transmission device, a high-speed signal transmission system, a high-speed signal transmission method, and a program that can reduce the adjustment man-hours and further improve the signal quality.SOLUTION: A high-speed signal transmission device 200 includes, for each transmission channel, a receiving circuit unit 220 that receives signals from other high-speed signal transmission devices 300, and a transmission circuit unit 210 that transmits signals to the other high-speed signal transmission devices 300, and the receiving circuit unit 220 sweeps a reception parameter each time the transmission parameter of the other high-speed signal transmission device 300 is incremented or decremented, and measures the transmission signal quality to determine the best value of the transmission parameter of the other high-speed signal transmission device 300 and the best value of the reception parameter of the high-speed signal transmission device 200, and the transmission circuit unit 210 transmits a transmission parameter change request for setting the best value of the transmission parameter to the other high-speed signal transmission device 300.SELECTED DRAWING: Figure 1

Description

The present invention relates to a high-speed signal transmission device, a high-speed signal transmission system, a high-speed signal transmission method, and a program.

In recent years, in the field of high-speed signal transmission equipment, high-speed transmission rate and large-capacity transfer have become mainstream. It is necessary to adjust the parameters of the high-speed signal of each transmission channel in the transmission device, but there is concern that the man-hours for adjusting the parameters will increase due to the high-speed transmission rate and large-capacity transfer. Specifically, it is necessary to adjust the parameters for each transmission channel. In addition, if there is a change on the transmission line, it is necessary to readjust the parameters each time.

In addition, enormous man-hours are required to adjust the signals transmitted at high speed for all the transmission devices and each of the plurality of channels.
Therefore, when a plurality of wirings are formed between the transmission devices for high-speed signals of a plurality of channels, parameters are uniquely determined for the plurality of wirings. As a result, the transmission characteristics may be affected by variations in the devices and substrates mounted on the transmission device.

Further, as described above, adjusting the parameters for each of all the transmission devices requires enormous man-hours. Therefore, usually, the parameters of the transmission device on the transmitting side or the receiving side are fixed, and the parameters are adjusted in the other transmission device. As a result, the adjusted parameters may not be the optimum parameters between the transmission devices.

Patent Document 1 pays attention to the fact that the transmission circuit and the reception circuit between the printed circuit boards of the large-capacity communication device are symmetric under the same conditions with respect to the wiring, and the attenuation rate of the high frequency component by the wiring that can be detected by the reception circuit. Is described to be used for adjusting the transmission equalization amount of the transmission circuits arranged physically adjacent to each other. Further, Patent Document 1 describes that the above adjustment procedure is incorporated into a series of device initial setting procedures to automatically detect and set the optimum equalization amount for each pattern wiring. As a result, manual setting can be omitted.

Japanese Unexamined Patent Publication No. 2004-015622

However, in the adjustment method described in Patent Document 1, since the parameters are not adjusted for each transmission channel, it is difficult to eliminate the increase in the man-hours for parameter adjustment. Further, even if the transmission circuit and the reception circuit of the transmission device are symmetrical with respect to wiring, there is a possibility that the transmission characteristics may be affected by variations in each circuit, contact with connectors, and the like.

An object of the present invention is to provide a high-speed signal transmission device, a high-speed signal transmission system, a high-speed signal transmission method, and a program capable of reducing the adjustment manpower and further improving the signal quality.

The high-speed signal transmission device according to the first aspect of the present invention includes a reception circuit unit that receives a signal from another high-speed signal transmission device and a transmission circuit unit that transmits a signal to the other high-speed signal transmission device. In preparation for each transmission channel, the transmission circuit unit transmits a transmission parameter change request for incrementing or decrementing the transmission parameters of the other high-speed signal transmission device to the other high-speed signal transmission device, and the reception circuit unit. When the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept, the transmission signal quality is measured, and the measured transmission signal quality becomes the best value. The transmission parameter of the other high-speed signal transmission device is determined as the best value of the transmission parameter of the other high-speed signal transmission device, and the reception parameter when the measured transmission signal quality becomes the best value is the best value of the reception parameter. The reception parameter is set to the best value of the reception parameter, and the transmission circuit unit sets the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. Sends a transmission parameter change request to set the best value of the transmission parameter of the high-speed signal transmission device.

The high-speed signal transmission system according to the second aspect of the present invention is a high-speed signal transmission system in which a plurality of high-speed signal transmission devices are communicably connected, and the high-speed signal transmission device is derived from another high-speed signal transmission device. A receiving circuit unit for receiving the signal of the above and a transmitting circuit unit for transmitting a signal to the other high-speed signal transmitting device are provided for each transmission channel, and the transmitting circuit unit is provided with respect to the other high-speed signal transmitting device. , The transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device is transmitted, and the receiving circuit unit receives each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented. The parameters are swept, the transmission signal quality is measured, and the transmission parameter of the other high-speed signal transmission device is the best of the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value. Determined as a value, the received parameter when the measured transmission signal quality becomes the best value is determined as the best value of the received parameter, the received parameter is set to the best value of the received parameter, and the transmission circuit The unit transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. ..

The high-speed signal transmission method according to the third aspect of the present invention is a high-speed signal implemented in a high-speed signal transmission device that receives a signal from another high-speed signal transmission device and transmits the signal to the other high-speed signal transmission device. In a transmission method, the high-speed signal transmission device transmits a transmission parameter change request for incrementing or decrementing the transmission parameters of the other high-speed signal transmission device to the other high-speed signal transmission device for each transmission channel. Then, each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept, the transmission signal quality is measured, and the measured transmission signal quality becomes the best value. The transmission parameter of the other high-speed signal transmission device is determined as the best value of the transmission parameter of the other high-speed signal transmission device, and the reception parameter when the measured transmission signal quality becomes the best value is the best value of the reception parameter. The reception parameter is set to the best value of the reception parameter, and the transmission parameter of the other high-speed signal transmission device is transmitted to the other high-speed signal transmission device by the other high-speed signal transmission device. Send a send parameter change request to set the best value of the parameter.

The high-speed signal transmission method according to the fourth aspect of the present invention is a high-speed signal transmission method implemented in the high-speed signal transmission device in a high-speed signal transmission system in which a plurality of high-speed signal transmission devices are communicably connected. , The high-speed signal transmission device transmits a transmission parameter change request for incrementing or decrementing the transmission parameters of the other high-speed signal transmission device to the other high-speed signal transmission device for each transmission channel, and the other high-speed signal transmission device. Each time the transmission parameter of the signal transmission device is incremented or decremented, the reception parameter is swept, the transmission signal quality is measured, and the other high-speed signal transmission device when the measured transmission signal quality becomes the best value. Is determined as the best value of the transmission parameter of the other high-speed signal transmission device, and the reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter. The reception parameter is set to the best value of the reception parameter, and the transmission parameter of the other high-speed signal transmission device is set to the best value of the transmission parameter of the other high-speed signal transmission device with respect to the other high-speed signal transmission device. Send a send parameter change request to do so.

The program according to the fifth aspect of the present invention is to a high-speed signal transmission device that receives a signal from another high-speed signal transmission device and transmits a signal to the other high-speed signal transmission device, for each transmission channel. The process of transmitting a transmission parameter change request for incrementing or decrementing the transmission parameters of the other high-speed signal transmission device and the transmission parameters of the other high-speed signal transmission device are incremented or decremented. Each time, the process of sweeping the reception parameter to measure the transmission signal quality and the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value are transmitted to the other high-speed signal. The process of determining the best value of the transmission parameter of the apparatus, the reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is the best of the reception parameter. The process of setting the value and the transmission parameter change for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device for the other high-speed signal transmission device. To execute the process of sending a request.

It is possible to provide a high-speed signal transmission device, a high-speed signal transmission system, a high-speed signal transmission method, and a program that can reduce the adjustment man-hours and further improve the signal quality.

It is a block diagram which shows an example of the structure of the high-speed signal transmission apparatus which concerns on embodiment of this invention. It is a block diagram which shows an example of the structure of the high-speed signal transmission system which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the high-speed signal transmission method in the high-speed signal transmission apparatus on the receiving side which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the high-speed signal transmission method in the high-speed signal transmission apparatus on the transmission side which concerns on Embodiment 1 of this invention. It is a figure explaining the data flow at the time of carrying out the high-speed signal transmission method which concerns on Embodiment 1 of this invention. It is a time chart which shows each setting parameter and the state of the transmission line at the time of carrying out the high-speed signal transmission method which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the high-speed signal transmission method in the high-speed signal transmission apparatus of the side which requests the parameter change which concerns on Embodiment 2 of this invention. It is a flowchart which shows an example of the high-speed signal transmission method in the high-speed signal transmission apparatus of the side which receives the request for parameter change which concerns on Embodiment 2 of this invention. It is a time chart which shows each setting parameter and the state of the transmission line at the time of carrying out the high-speed signal transmission method which concerns on Embodiment 2 of this invention. It is a flowchart which shows an example of the high-speed signal transmission method in the high-speed signal transmission apparatus on the receiving side which concerns on Embodiment 3 of this invention. It is a time chart which shows each setting parameter and the state of the transmission line at the time of carrying out the high-speed signal transmission method which concerns on Embodiment 3 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an example of the configuration of the high-speed signal transmission device 200 according to the embodiment of the present invention. Further, the high-speed signal transmission device 200 according to the embodiment of the present invention is communicably connected to another high-speed signal transmission device (not shown).
Further, as shown in FIG. 1, the high-speed signal transmission device 200 includes a transmission circuit unit 210 that transmits a signal to another high-speed signal transmission device and a reception circuit unit 220 that receives a signal from the other high-speed signal transmission device. , Are provided for each transmission channel.

The transmission circuit unit 210 transmits a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device.

The reception circuit unit 220 measures the transmission signal quality by sweeping the reception parameter each time the transmission parameter of another high-speed signal transmission device is incremented or decremented.
Further, the receiving circuit unit 220 determines the transmission parameter of the other high-speed signal transmission device as the best value of the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value.
Further, the reception circuit unit 220 determines the reception parameter when the transmission signal quality becomes the best value as the best value of the reception parameter of the high-speed signal transmission device 200, and sets the reception parameter of the high-speed signal transmission device 200 as the reception parameter of the reception parameter. Set to the best value.

Further, the transmission circuit unit 210 transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter to the other high-speed signal transmission device.

According to the high-speed signal transmission device 200 according to the embodiment of the present invention described above, the best value of the reception parameter of the high-speed signal transmission device 200 is determined, and at the same time, the best value of the transmission parameter of another high-speed signal transmission device is also determined. It is determined. That is, the parameters of both the high-speed signal transmission device 200 and the other high-speed signal transmission device can be adjusted at the same time. Therefore, the adjustment man-hours can be reduced as compared with the case where the parameters are individually adjusted for each of the high-speed signal transmission devices.

Further, if the parameters are adjusted for each of the transmission devices, a huge amount of man-hours are required. Therefore, the parameters of the transmission device on the transmitting side or the receiving side are fixed, and the parameters are adjusted in the other transmission device. As a result, the adjusted parameters may not be the optimum parameters between the transmission devices. However, according to the high-speed signal transmission device 200 according to the present embodiment, the reception parameters of the high-speed signal transmission device 200 are swept while the transmission parameters of the other high-speed signal transmission devices are incremented or decremented. Therefore, it is possible to avoid a problem that the adjusted parameters are not the optimum parameters between the transmission devices.

In addition, the above adjustment is automatically performed for each transmission channel. That is, even if a plurality of wirings are formed for each transmission channel between the high-speed signal transmission devices, the reception parameter and the transmission parameter in consideration of the plurality of wirings are determined for each transmission channel. Therefore, the signal quality can be further improved as compared with the case where the parameters for the plurality of wirings are uniquely determined.

Therefore, according to the high-speed signal transmission device 200 according to the embodiment of the present invention, the adjustment man-hours can be reduced and the signal quality can be further improved.

Embodiment 1
FIG. 2 is a block diagram showing an example of the configuration of the high-speed signal transmission system 100 according to the first embodiment of the present invention. In the example shown in FIG. 2, the high-speed signal transmission device 200 and the high-speed signal transmission device (hereinafter, simply referred to as “transmission device”) 300 according to the first embodiment are communicably connected to each other. The transmission device 200 and the transmission device 300 have the same configuration. Further, the transmission device 200 and the transmission device 300 are connected by a pattern wiring transmission line 400 and a pattern wiring transmission line 500. The pattern wiring transmission line 400 and the pattern wiring transmission line 500 may include a connector and a backwired board.
Hereinafter, the configuration of the transmission device 200 will be described. Since the configuration of the transmission device 300 is the same as that of the transmission device 200, the description thereof will be omitted.

The transmission device 200 includes a transmission circuit unit 210, a reception circuit unit 220, a data storage unit 230, and the like.

The transmission circuit unit 210 includes a random pattern generation circuit 211, a selection circuit 212, a transmission side equalization circuit 213, a transmission parameter setting circuit 214, a transmission signal control circuit 215, a switching circuit 216, and the like.

The random pattern generation circuit 211 generates a pseudo-random pattern for adjustment.
The selection circuit 212 selects and outputs transmission data, adjustment signals, and the like based on the selection control signal input from the switching circuit 216.
The transmission side equalization circuit 213 includes an output amplifier and the like, and adjusts the output such as emphasis and de-emphasis.
The transmission parameter setting circuit 214 sets transmission parameters for adjusting transmission signals (transmission data, adjustment signals, etc.). Specifically, the transmission parameter setting circuit 214 sets setting parameters for adjusting the emphasis value and the gain voltage with respect to the transmission side equalization circuit 213. The transmission parameter is, for example, a filter constant of a filter that adjusts the amplitude and frequency of a signal waveform.
The transmission signal control circuit 215 receives a change request from the transmission device 300 on the receiving side and makes a change request for transmission parameters.
The switching circuit 216 inputs a selection control signal for selecting transmission data, an adjustment signal, and the like to the selection circuit 212.

The reception circuit unit 220 includes a reception side equalization circuit 221, a reception parameter setting circuit 222, a reception signal control circuit 223, a reception signal identification circuit 224, a control data extraction circuit 225, and the like.

The receiving side equalization circuit 221 performs equalization adjustment of the received signal (received data, adjustment signal, etc.).
The reception parameter setting circuit 222 sets reception parameters for adjusting the reception signal. The reception parameters are, for example, parameters related to the gain adjustment of the amplifier for amplifying the high frequency component of the data attenuated by the transmission line and the frequency (band) to be emphasized.
The reception signal control circuit 223 changes or switches adjustment parameters in the transmission device 300 on the receiving side.
The received signal identification circuit 224 calculates the error rate after equalization adjustment of the received signal.
The control data extraction circuit 225 extracts control data for the transmission circuit unit 210 and the reception circuit unit 220 from the reception data.

The data storage unit 230 stores parameter data, transmission signal quality values, and the like in the transmission circuit unit 210 and the reception circuit unit 220. For example, in the signal correction training process, the data storage unit 230 stores the value of the reception parameter, the value of the transmission signal quality, and the value of the transmission parameter in the transmission device 300, which is the transmission partner, in association with each other.

In FIG. 2, for convenience of explanation, an example in which one transmission and reception channel is shown is shown, but when a plurality of channels are transmitted between the transmission device 300 and the transmission device 300, the transmission and reception channels are shown. The transmission circuits 200 and 300 are provided with transmission circuit units 210 and 310 and reception circuit units 220 and 320 independently for each of a plurality of channels.

Next, the high-speed signal transmission method according to the first embodiment will be described with reference to FIGS. 3 to 5. FIG. 3 is a flowchart illustrating processing in the transmission device 300 on the receiving side. Further, FIG. 4 is a flowchart illustrating processing in the transmission device 200 on the transmitting side. Further, FIG. 5 is a diagram illustrating a data flow in the transmission devices 200 and 300 according to the first embodiment. In FIG. 5, some configurations of the transmission devices 200 and 300 are omitted for convenience of explanation.

First, as shown in FIG. 3, when a pseudo-random pattern for adjustment is input from the transmission circuit unit 210 of the transmission device 200 on the transmission side, signal correction training is started in the transmission device 300 (step S101).

Next, the reception parameter setting circuit 322 of the transmission device 300 initializes the reception parameters of the reception side equalization circuit 321 (step S102).

Next, the transmission device 300 determines whether or not the received signal from the transmission device 200 has been detected (step S103). Here, the received signal is not particularly limited, but adjustments such as a signal format transmitted and received between the transmission device 200 and the transmission device 300, a pilot signal transmitted by the transmission device 200 on the transmission side, and the like. Includes signal. In FIG. 3, the received signal is a pseudo-random pattern for adjustment. The pseudo-random pattern for adjustment is a pattern such as PN11 or PN23.

If the received signal from the transmission device 200 is not detected in step S103 (step S103; No), the transmission device 300 repeats the process of step S103.

When the received signal from the transmission device 200 is detected in step S103 (step S103; Yes), the received signal identification circuit 324 measures and calculates the transmission signal quality based on the received signal (step S104). The transmission signal quality value includes an error rate (BER), an eye pattern aperture ratio, and the like, but in the present invention, the transmission signal quality value is not limited to these.

Next, the transmission device 300 transmits the value of the reception parameter set in step S102 or step S106 described later, the value of the transmission signal quality measured and calculated in step S104, and the transmission in the transmission device 200 received in step S110 described later. The parameter values are associated with each other and stored in the data storage unit 330 (step S105).

Next, the reception signal control circuit 323 inputs a control signal for incrementing or decrementing the reception parameter of the reception side equalization circuit 321 to the reception parameter setting circuit 322. Next, the reception parameter setting circuit 322 changes the reception parameter according to the control signal (step S106).

Next, the reception signal control circuit 323 determines whether or not the value of the reception parameter set in step S106 has reached a predetermined limit value (M in FIG. 6 described later) (step S107).

In step S107, if the value of the reception parameter set in step S106 has not reached a predetermined limit value (step S107; No), the process returns to step S103.

In step S107, when the value of the reception parameter set in step S106 reaches a predetermined limit value (step S107; Yes), the sweep of the reception parameter in the transmission device 300 on the receiving side is completed. Therefore, the reception signal control circuit 323 determines whether or not the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (N in FIG. 6 described later) (step S108). The value of the transmission parameter of the transmission device 200 is transmitted from the transmission device 200 to the transmission device 300 in the process of step S207 shown in FIG. 4 to be described later.

In step S108, when the transmission parameter of the transmission device 200 on the transmission side has not reached a predetermined limit value (step S108; No), the transmission circuit unit 310 of the transmission device 300 transmits via the pattern wiring transmission line 500. The parameter change request is transmitted to the transmission device 200 on the transmitting side (step S109), and the process proceeds to step S203 shown in FIG. 4 to be described later. The notification method from the transmission device 300 to the transmission device 200 is not particularly limited as long as it is a method that can be recognized by the reception circuit unit 220 of the transmission device 200.

Next, the transmission device 300 determines whether or not the transmission parameter change completion notification has been received from the transmission device 200 (step S110). The transmission parameter change completion notification is transmitted from the transmission device 200 to the transmission device 300 in the process of step S207 shown in FIG. 4 to be described later.

If the transmission parameter change completion notification has not been received from the transmission device 200 in step S110 (step S110; No), the transmission device 300 repeats the process of step S110.

When the transmission parameter change completion notification is received from the transmission device 200 in step S110 (step S110; Yes), the transmission device 300 returns to step S102.

In step S108, when the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (step S108; Yes), the change and setting of the transmission parameter in the transmission device 200 on the transmission side are completed. Therefore, the reception signal control circuit 323 of the transmission device 300 receives the control signal for setting the reception parameter of the reception side equalization circuit 321 to the best value among the measurement values of the reception parameters measured in the processing so far. Input to the parameter setting circuit 322. Specifically, the received signal control circuit 323 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 330, and associates it with the best transmission signal quality value. The value of the received reception parameter is selected as the best value of the reception parameter. Next, the reception parameter setting circuit 322 changes the reception parameter according to the control signal (step S111).

Next, the transmission circuit unit 310 of the transmission device 300 on the receiving side sends a transmission parameter change request for setting the transmission parameter of the transmission device 200 on the transmission side to the best value via the pattern wiring transmission line 500. Is transmitted to the transmission device 200 (step S112), and the process proceeds to step S203 shown in FIG. 4 to be described later. Specifically, the transmission signal control circuit 315 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 330, and associates it with the best transmission signal quality value. The value of the transmitted transmission parameter is selected as the best value of the transmission parameter, and is input to the transmission circuit unit 310. The notification method from the transmission device 300 to the transmission device 200 is not particularly limited as long as it is a method that can be recognized by the reception circuit unit 220 of the transmission device 200.

Next, the transmission device 300 determines whether or not the transmission parameter change completion notification has been received from the transmission device 200 (step S113).

If the transmission parameter change completion notification has not been received from the transmission device 200 in step S113 (step S113; No), the transmission device 300 repeats the process of step S113.

When the transmission parameter change completion notification is received from the transmission device 200 in step S113 (step S113; Yes), the transmission circuit unit 310 of the transmission device 300 sends the change completion notification (FIG. 6) via the pattern wiring transmission line 500. "Completion of adjustment" shown in (1) is transmitted to the transmission device 200 on the transmitting side (step S114), the process proceeds to step S204 shown in FIG. 4 to be described later, and this process is completed.

Next, processing in the transmission device 200 on the transmitting side will be described with reference to FIG.
First, the transmission parameter setting circuit 214 of the transmission device 200 initializes the transmission parameters of the transmission side equalization circuit 213 (step S201).

Next, the transmission circuit unit 210 of the transmission device 200 transmits a pseudo random pattern for adjustment from the transmission side equalization circuit 213 to the reception circuit unit 320 of the transmission device 300 via the pattern wiring transmission line 400 (step S202). ..

Next, the transmission device 200 determines whether or not the transmission parameter change request from the transmission circuit unit 310 of the transmission device 300 on the receiving side has been received (step S203). The transmission parameter change request is transmitted from the transmission device 200 to the transmission device 300 in either the process of step S109 or the process of step S112 shown in FIG.

In step S203, when the transmission parameter change request is not received from the transmission circuit unit 310 of the transmission device 300 on the receiving side (step S203; No), the transmission device 200 returns to step S202.

When a transmission parameter change request is received from the transmission circuit unit 310 of the transmission device 300 on the receiving side in step S203 (step S203; Yes), the transmission device 200 changes the transmission circuit unit 310 of the transmission device 300 on the receiving side. It is determined whether or not the completion notification has been received (step S204). The transmission parameter change request is transmitted from the transmission device 200 to the transmission device 300 in the process of step S114 shown in FIG.

In step S204, when the change completion notification is not received from the transmission circuit unit 310 of the transmission device 300 on the receiving side (step S204; No), the control data extraction circuit 225 of the transmission device 200 is transmitted from the transmission device 300. The transmission parameter change request is extracted from the signal, and the extracted transmission parameter change request is input to the transmission signal control circuit 215. Next, the transmission signal control circuit 215 inputs a control signal for changing the transmission parameter of the equalization circuit 213 to the transmission parameter setting circuit 214. Specifically, the transmission signal control circuit 215 inputs a control signal for incrementing or decrementing the transmission parameter to the transmission parameter setting circuit 214. Next, the transmission parameter setting circuit 214 changes the transmission parameter according to the control signal (step S205).

Next, the transmission circuit unit 210 of the transmission device 200 stops the transmission of the pseudo-random pattern for adjustment to the reception circuit unit 320 of the transmission device 300 (step S206).

Next, the transmission circuit unit 210 of the transmission device 200 transmits the value of the transmission parameter changed in step S205 and the transmission parameter change completion notification to the reception circuit unit 320 of the transmission device 300 on the receiving side (step S207). ), Proceed to step S202. The method of notifying the transmission device 200 to the transmission device 300 is not particularly limited as long as it can be recognized by the reception circuit unit 320 of the transmission device 300.

When the change completion notification is received from the transmission circuit unit 310 of the transmission device 300 on the receiving side in step S204 (step S204; Yes), the transmission circuit unit 210 of the transmission device 200 sends the change completion notification to the reception circuit unit 320 of the transmission device 300. The transmission of the pseudo-random pattern for adjustment is stopped (step S206), and this process is terminated.

Next, with reference to FIG. 6, the states of the reception parameter and the transmission parameter and the state of the pattern wiring transmission lines 400 and 500 when adjusting the high-speed signal in the transmission devices 200 and 300 according to the first embodiment will be described. To do. In FIG. 6, the setting range of the transmission parameter is 1 or more and N or less (N is a positive integer), and the setting range of the reception parameter is 1 or more and M or less (M is a positive integer). In the first embodiment, as shown in FIG. 6, the transmission signal quality measurement and calculation process (process in step S104) is performed N × M times. Further, the best value of the transmission parameter is Nx, and the best value of the reception parameter is Mx. Here, the best value Nx of the transmission parameter and the best value Mx of the reception parameter are the value of the transmission parameter and the value of the reception parameter that maximize the quality of the transmission signal between the transmission device 200 and the transmission device 300.

As shown in FIG. 6, the transmission parameter and the reception parameter are changed according to the order of the processes shown in the flowcharts of FIGS. 3 and 4. Specifically, every time the transmission parameter is changed in step S205 shown in FIG. 4, a transmission parameter change completion notification is transmitted from the transmission device 200 to the transmission device 300 via the pattern wiring transmission line 400. Further, at the timings of steps S109 and S112 shown in FIG. 3, a transmission parameter change request is transmitted from the transmission device 300 to the transmission device 200 via the pattern wiring transmission line 500. The pattern format of the transmission parameter change completion notification and the transmission parameter change request is not particularly limited, and may be recognizable by the reception circuit unit 220 of the transmission device 200 and the reception circuit unit 320 of the transmission device 300.

According to the high-speed signal transmission system 100, the high-speed signal transmission devices 200, 300, the high-speed signal transmission method, and the program according to the first embodiment described above, the best value of the reception parameter of the high-speed signal transmission device 200 is determined. At the same time, the best value of the transmission parameter of the other high-speed signal transmission device 300 is also determined. That is, the parameters of both the high-speed signal transmission device 200 and the other high-speed signal transmission device 300 can be adjusted at the same time. Therefore, the adjustment man-hours can be reduced as compared with the case where the parameters are individually adjusted for each of the high-speed signal transmission devices 200 and 300.

In addition, adjusting the parameters for each of all transmission devices requires enormous man-hours. Therefore, usually, the parameters of the transmission device on the transmitting side or the receiving side are fixed, and the parameters are adjusted in the other transmission device. .. As a result, the adjusted parameters may not be the optimum parameters between the transmission devices. However, in the first embodiment, the reception parameter of the high-speed signal transmission device 200 is swept while the transmission parameter of the other high-speed signal transmission device 300 is incremented or decremented. Therefore, it is possible to avoid a problem that the adjusted parameters are not the optimum parameters between the transmission devices.

In addition, the above adjustment is automatically performed for each transmission channel. That is, even if a plurality of pattern wiring transmission lines 400, 500 are formed for each transmission channel between the high-speed signal transmission devices 200, 300, a reception parameter that takes into account the plurality of pattern wiring transmission lines 400, 500 for each transmission channel. And transmission parameters are determined. Therefore, the signal quality can be further improved as compared with the case where the parameters for the plurality of pattern wiring transmission lines 400 and 500 are uniquely determined.

Therefore, according to the high-speed signal transmission system 100, the high-speed signal transmission devices 200, 300, the high-speed signal transmission method, and the program according to the first embodiment of the present invention, the adjustment manpower can be reduced and the signal quality can be improved. Can be improved further.

Further, the high-speed signal transmission devices 200 and 300 use the pattern wiring transmission lines 400 and 500 used for transmitting and receiving the main signal, and various signals for signal correction training (pseudo-random pattern for adjustment, transmission parameter). Change request, transmission parameter change completion notification) can be sent and received. Therefore, it is not necessary to provide a dedicated control wiring for signal correction training between the high-speed signal transmission devices 200 and 300.

Embodiment 2
Since the high-speed signal transmission system and the high-speed signal transmission device according to the second embodiment of the present invention are the same as the high-speed signal transmission system 100 and the high-speed signal transmission devices 200 and 300 according to the first embodiment, the same reference numerals are used. At the same time, the description thereof will be omitted.

Next, the high-speed signal transmission method according to the second embodiment will be described with reference to FIGS. 7 and 8. In the second embodiment, a pseudo-random pattern for adjustment is input from one of the transmission devices 200 and 300 to the receiving circuit units 220 and 320 of the other transmission devices 200 and 300, and one of the transmission devices 200 and 300 is used. Requests its own transmission circuit units 210 and 310 and the other transmission devices 200 and 300 to change transmission parameters. As a result, the high-speed signal line can be adjusted simultaneously in both the transmission devices 200 and 300 on the transmitting side and the transmission devices 200 and 300 on the receiving side, and the adjustment time can be further shortened.
FIG. 7 is a flowchart illustrating processing in the transmission device on the side requesting the parameter change. Further, FIG. 8 is a flowchart illustrating processing in the transmission device on the side receiving the request for parameter change. In FIGS. 7 and 8, as an example, the transmission device 300 of FIG. 2 is the side that requests the change of the transmission parameter, and the transmission device 200 is the side that receives the change of the transmission parameter.

First, as shown in FIG. 7, when a pseudo-random pattern for adjustment is input from the transmission circuit unit 210 of the transmission device 200, signal correction training is started in the transmission device 300 (step S301).

Next, in the second embodiment, since the signal correction training is also carried out in the transmission device 200, the transmission parameter setting circuit 314 of the transmission device 300 initializes the transmission parameters of the transmission side equalization circuit 313. (Step S302).

Next, the transmission circuit unit 310 of the transmission device 300 transmits a pseudo random pattern for adjustment from the transmission side equalization circuit 313 to the reception circuit unit 220 of the transmission device 200 via the pattern wiring transmission line 500 (step S303). ..

Further, the reception parameter setting circuit 322 of the transmission device 300 initializes the reception parameters of the reception side equalization circuit 321 (step S304).
Hereinafter, since the processing of steps S305 to S308 is the same as that of steps S103 to S106 shown in FIG. 3, the description thereof will be omitted.

Next, the reception signal control circuit 323 determines whether or not the value of the reception parameter set in step S308 has reached a predetermined limit value (M in FIG. 9 described later) (step S309).

In step S309, if the value of the reception parameter set in step S308 has not reached a predetermined limit value (step S309; No), the process returns to step S305.

In step S309, when the value of the reception parameter set in step S308 has reached a predetermined limit value (step S309; Yes), the sweep of the reception parameter in the transmission device 300 on the receiving side is completed. Therefore, in order to send the transmission parameter change request to the transmission device 200, the transmission circuit unit 310 of the transmission device 300 stops the transmission of the pseudo-random pattern for adjustment to the reception circuit unit 220 of the transmission device 200 (step S310).

Next, the reception signal control circuit 323 determines whether or not the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (N in FIG. 9 described later) (step S311). The value of the transmission parameter of the transmission device 200 is transmitted from the transmission device 200 to the transmission device 300 in the process of step S414 shown in FIG. 8 to be described later.

In step S311, when the transmission parameter of the transmission device 200 on the transmission side has not reached a predetermined limit value (step S311; No), the transmission circuit unit 310 of the transmission device 300 transmits via the pattern wiring transmission line 500. The parameter change request is transmitted to the transmission device 200 on the transmitting side (step S312), and the process proceeds to step S410 shown in FIG. 8 to be described later. The notification method from the transmission device 300 to the transmission device 200 is not particularly limited as long as it is a method that can be recognized by the reception circuit unit 220 of the transmission device 200.

Next, the transmission device 300 determines whether or not the transmission parameter change completion notification has been received from the transmission device 200 (step S313).

If the transmission parameter change completion notification has not been received from the transmission device 200 in step S313 (step S313; No), the transmission device 300 repeats the process of step S313.

When the transmission parameter change completion notification is received from the transmission device 200 in step S313 (step S313; Yes), the transmission device 300 returns to step S303.

In step S311, when the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (step S311; Yes), the change and setting of the transmission parameter in the transmission device 200 on the transmission side are completed. Therefore, the transmission circuit unit 310 of the transmission device 300 transmits a measurement stop request (“completion of adjustment” shown in FIG. 9) to the transmission device 200 via the pattern wiring transmission line 500 (step S314).

Further, the reception signal control circuit 323 of the transmission device 300 receives a control signal for setting the reception parameter of the reception side equalization circuit 321 to the best value among the measurement values of the reception parameters measured in the processing so far. Input to the parameter setting circuit 322. Specifically, the received signal control circuit 323 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 330, and associates it with the best transmission signal quality value. The value of the received reception parameter is selected as the best value of the reception parameter. Next, the reception parameter setting circuit 322 changes the reception parameter according to the control signal (step S315).

Next, the transmission circuit unit 310 of the transmission device 300 transmits a transmission parameter change request for setting the transmission parameter to the best value to the transmission device 200 via the pattern wiring transmission line 500 (step S316), which will be described later. The process proceeds to step S418 shown in FIG. Specifically, the transmission signal control circuit 315 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 330, and associates it with the best transmission signal quality value. The value of the transmitted transmission parameter is selected as the best value of the transmission parameter and input to the transmission circuit unit 310. The notification method from the transmission device 300 to the transmission device 200 is not particularly limited as long as it is a method that can be recognized by the reception circuit unit 220 of the transmission device 200.

Next, the transmission device 300 determines whether or not a transmission parameter change request for setting the transmission parameter to the best value has been received from the transmission device 200 (step S317).

If the transmission parameter change request has not been received from the transmission device 200 in step S317 (step S317; No), the transmission device 300 repeats the process of step S317.

When the transmission parameter change request is received from the transmission device 200 in step S317 (step S317; Yes), the transmission signal control circuit 315 of the transmission device 300 changes the transmission parameter of the transmission side equalization circuit 313 to the best value. The control signal for this is input to the transmission parameter setting circuit 314. Next, the transmission parameter setting circuit 314 changes the transmission parameter to the best value according to the control signal (step S318), and ends this process.

Next, processing in the transmission device 200 on the transmitting side will be described with reference to FIG.
First, the transmission parameter setting circuit 214 of the transmission device 200 initializes the transmission parameters of the transmission side equalization circuit 213 (step S401).

Next, the transmission circuit unit 210 of the transmission device 200 transmits a pseudo random pattern for adjustment from the transmission side equalization circuit 213 to the reception circuit unit 320 of the transmission device 300 via the pattern wiring transmission line 400 (step S402). ..

Next, when a pseudo-random pattern for adjustment is input from the transmission circuit unit 310 of the transmission device 300, signal correction training is started in the transmission device 200 (step S403).

Further, the reception parameter setting circuit 222 of the transmission device 200 initializes the reception parameters of the reception side equalization circuit 221 (step S404).
Hereinafter, since the processing of steps S405 to S408 is the same as the processing of steps S103 to S106 shown in FIG. 3, the description thereof will be omitted.

Next, the reception signal control circuit 223 determines whether or not the value of the reception parameter set in step S408 has reached a predetermined limit value (M in FIG. 9 described later) (step S409).

In step S409, if the value of the reception parameter set in step S408 has not reached a predetermined limit value (step S409; No), the process returns to step S405.

In step S409, when the value of the reception parameter set in step S408 has reached a predetermined limit value (step S409; Yes), the sweep of the reception parameter in the transmission device 200 on the transmitting side is completed. Therefore, the transmission device 200 determines whether or not the transmission parameter change request has been received from the transmission device 300 (step S410). The transmission parameter change request is transmitted from the transmission device 300 to the transmission device 200 in step S312 shown in FIG. 7.

If the transmission parameter change request has not been received from the transmission device 300 in step S410 (step S410; No), the transmission device 200 repeats the process of step S410.

When the transmission parameter change request is received from the transmission device 300 in step S410 (step S410; Yes), has the transmission device 200 received the measurement stop request from the transmission circuit unit 310 of the transmission device 300 on the receiving side? It is determined whether or not (step S411).

In step S411, when the measurement stop request is not received from the transmission circuit unit 310 of the transmission device 300 on the receiving side (step S411; No), the transmission device 200 performs the processes of steps S421 to S414. Since the processing of steps S421 to S414 is the same as the processing of steps S205 to 207 shown in FIG. 4, the description thereof will be omitted. While the processing of steps S402 to S414 is performed in the transmission device 200 and the reception parameter of the reception side equalization circuit 221 of the transmission device 200 is measured, the transmission parameter of the transmission device 300 is the transmission device. It has been changed to the same value as the 200 transmission parameters.

When the measurement stop request is received from the transmission circuit unit 310 of the transmission device 300 on the receiving side in step S411 (step S411; Yes), the change and setting of the transmission parameters in the transmission device 300 on the receiving side are completed. Therefore, the transmission circuit unit 210 of the transmission device 200 stops the transmission of the pseudo-random pattern for adjustment to the reception circuit unit 320 of the transmission device 300 (step S415).

Next, the reception signal control circuit 223 of the transmission device 200 sets a control signal for setting the reception parameter of the reception side equalization circuit 221 to the best value among the measurement values of the reception parameters measured in the processing so far. Input to the reception parameter setting circuit 222. Specifically, the received signal control circuit 223 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 230 and associates it with the best transmission signal quality value. The value of the received reception parameter is selected as the best value of the reception parameter. Next, the reception parameter setting circuit 222 changes the reception parameter according to the control signal (step S416).

Next, the transmission circuit unit 210 of the transmission device 200 transmits a transmission parameter change request for setting the transmission parameter to the best value to the transmission device 300 via the pattern wiring transmission line 400 (step S417). The process proceeds to step S317 shown in 7. Specifically, the transmission signal control circuit 215 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 230, and associates it with the best transmission signal quality value. The value of the transmitted transmission parameter is selected as the best value of the transmission parameter and input to the transmission circuit unit 210. The method of notifying the transmission device 200 to the transmission device 300 is not particularly limited as long as it can be recognized by the reception circuit unit 320 of the transmission device 300.

Next, the transmission device 200 determines whether or not a transmission parameter change request for setting the transmission parameter to the best value has been received from the transmission device 300 (step S418).

If the transmission parameter change request has not been received from the transmission device 300 in step S418 (step S418; No), the transmission device 200 repeats the process of step S418.

When the transmission parameter change request is received from the transmission device 300 in step S418 (step S418; Yes), the transmission signal control circuit 215 of the transmission device 200 changes the transmission parameter of the transmission side equalization circuit 213 to the best value. The control signal for this is input to the transmission parameter setting circuit 214. Next, the transmission parameter setting circuit 214 changes the transmission parameter to the best value according to the control signal (step S419), and ends this process.

Next, with reference to FIG. 9, the states of the reception parameter and the transmission parameter and the state of the pattern wiring transmission lines 400 and 500 when adjusting the high-speed signal in the transmission devices 200 and 300 according to the second embodiment will be described. To do. In FIG. 9, the transmission parameter setting range is 1 or more and N or less (N is a positive integer), and the reception parameter setting range is 1 or more and M or less (M is a positive integer). Further, the best value of the transmission parameter of the transmission device 200 is Nx, and the best value of the reception parameter is My. Further, the best value of the transmission parameter of the transmission device 300 is Ny, and the best value of the reception parameter is Mx. Here, the best value Nx, Ny of the transmission parameter and the best value Mx, My of the reception parameter are the value of the transmission parameter and the value of the reception parameter that give the best transmission signal quality between the transmission device 200 and the transmission device 300. is there.

As shown in FIG. 9, the transmission parameter and the reception parameter are changed according to the order of the processes shown in the flowcharts of FIGS. 7 and 8. Specifically, at the timings of steps S312 and S316 shown in FIG. 7, a transmission parameter change request is transmitted from the transmission device 300 to the transmission device 200 via the pattern wiring transmission line 500. Further, every time the transmission parameter is changed in step S412 shown in FIG. 8, a transmission parameter change completion notification is transmitted from the transmission device 200 to the transmission device 300 via the pattern wiring transmission line 400 (step S414). The pattern format of the transmission parameter change completion notification and the transmission parameter change request is not particularly limited, and may be recognizable by the reception circuit unit 220 of the transmission device 200 and the reception circuit unit 320 of the transmission device 300.
That is, in the second embodiment, as shown in FIG. 9, in the transmission device 200 and the transmission device 300, the measurement and calculation processing of the transmission signal quality (the processing of steps S306 and S406) is performed at almost the same time by N × M. It will be carried out once.

According to the high-speed signal transmission system 100, high-speed signal transmission devices 200, 300, high-speed signal transmission method, and program according to the second embodiment described above, the high-speed signal transmission system 100, high-speed signal according to the first embodiment. The same effects as those of the transmission devices 200, 300, the high-speed signal transmission method, and the program can be obtained.
Further, in the second embodiment, in both the transmission device 200 and the transmission device 300, the measurement and calculation processing of the transmission signal quality is carried out N × M times at substantially the same time. Therefore, the second embodiment can further improve the signal quality as compared with the first embodiment without increasing the adjustment time.

Embodiment 3
Since the high-speed signal transmission system and the high-speed signal transmission device according to the third embodiment of the present invention are the same as the high-speed signal transmission system 100 and the high-speed signal transmission devices 200 and 300 according to the first embodiment, the same reference numerals are used. At the same time, the description thereof will be omitted.

Next, the high-speed signal transmission method according to the third embodiment will be described with reference to FIG. The high-speed signal transmission method according to the third embodiment is different from the high-speed signal transmission method according to the first embodiment in that the transmission device 300 on the receiving side performs the process shown in FIG. 10 instead of the process shown in FIG. Specifically, the adjustment time can be shortened by the transmission device 300 on the receiving side and the transmission device 300 on the receiving side performing the process shown in FIG. 10 instead of the process shown in FIG. For example, even if the transmission device 300 on the receiving side receives the transmission parameter of the transmission device 200 on the transmitting side in step S110 shown in FIG. 3 and measures and calculates the receiving parameter in step S104, the best value of the receiving parameter is large. When the transmission device 300 on the receiving side has a characteristic that does not fluctuate, the process shown in FIG. 10 is performed instead of the process shown in FIG. In the third embodiment, the transmission device 200 on the transmitting side performs the process shown in FIG.

First, as shown in FIG. 10, when a pseudo-random pattern for adjustment is input from the transmission circuit unit 210 of the transmission device 200 on the transmission side, signal correction training is started in the transmission device 300 (step S501).

Next, the transmission device 300 sweeps the reception parameters of the transmission device 300, the reception signal identification circuit 324 measures and calculates the transmission signal quality, and the data storage unit associates the reception parameters with the transmission signal quality. Store in 330 (step S502). Specifically, the transmission device 300 sweeps the reception parameters of the transmission device 300 on the reception side in a state where the transmission parameters of the transmission device 200 on the transmission side are fixed to the initial setting values, and steps S102 to S102 shown in FIG. The process of step S107 is executed. Note that sweeping the reception parameter means sequentially incrementing or decrementing the reception parameter. Further, the transmission signal quality value includes an error rate (BER), an eye pattern aperture ratio, and the like, but in the present invention, the transmission signal quality value is not limited to these.

Next, the reception signal control circuit 323 of the transmission device 300 sets the best value among the measured values of the reception parameters measured in step S502 as the tentative best value, and sets the reception parameter of the reception side equalization circuit 321 as the tentative best. A control signal for setting the value is input to the reception parameter setting circuit 322. Next, the reception parameter setting circuit 322 changes the reception parameter according to the control signal (step S503).

Next, the transmission circuit unit 310 of the transmission device 300 transmits a transmission parameter change request to the transmission device 200 on the transmission side via the pattern wiring transmission line 500 (step S504), and proceeds to step S203 shown in FIG. ..

Next, the transmission device 300 determines whether or not the transmission parameter change completion notification has been received from the transmission device 200 (step S505).

If the transmission parameter change completion notification has not been received from the transmission device 200 in step S505 (step S505; No), the transmission device 300 repeats the process of step S505.

When the transmission parameter change completion notification is received from the transmission device 200 in step S505 (step S505; Yes), the transmission device 300 performs the processes of steps S506 to S508. Since the processing of steps S506 to S508 is the same as the processing of steps S103 to S105 shown in FIG. 3, the description thereof will be omitted.

Next, the reception signal control circuit 323 determines whether or not the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (N in FIG. 11 described later) (step S509). The value of the transmission parameter of the transmission device 200 is transmitted from the transmission device 200 to the transmission device 300 in the process of step S207 shown in FIG.

In step S509, if the transmission parameter of the transmission device 200 on the transmission side has not reached a predetermined limit value (step S509; No), the process returns to step S504.
That is, in the processes of steps S504 to S509, the transmission parameters of the transmission device 200 on the transmission side are swept while the reception parameters of the transmission device 300 on the reception side are fixed to the tentative best values, and the reception signal identification circuit 324 is used. Measures and calculates the transmission signal quality, and stores the transmission parameter and the transmission signal quality in the data storage unit 330 in association with each other. Note that sweeping the transmission parameter means incrementing or decrementing the transmission parameter.

In step S509, when the transmission parameter of the transmission device 200 on the transmission side has reached a predetermined limit value (step S509; Yes), the change and setting of the transmission parameter in the transmission device 200 on the transmission side are completed. Therefore, the transmission circuit unit 310 of the transmission device 300 on the receiving side transmits a transmission parameter change request for setting the transmission parameter to the best value to the transmission device 200 on the transmission side via the pattern wiring transmission line 500 (). Step S510), the process proceeds to step S203 shown in FIG. 4 described later. Specifically, the transmission signal control circuit 315 extracts the best transmission signal quality value from the transmission signal quality value stored in the data storage unit 330, and associates it with the best transmission signal quality value. The value of the transmitted transmission parameter is selected as the best value of the transmission parameter and input to the transmission circuit unit 310. The notification method from the transmission device 300 to the transmission device 200 is not particularly limited as long as it is a method that can be recognized by the reception circuit unit 220 of the transmission device 200.

Next, the transmission device 300 determines whether or not the transmission parameter change completion notification has been received from the transmission device 200 (step S511).

If the transmission parameter change completion notification has not been received from the transmission device 200 in step S511 (step S511; No), the transmission device 300 repeats the process of step S511.

When the transmission parameter change completion notification is received from the transmission device 200 in step S511 (step S511; Yes), the transmission device 300 sweeps the reception parameter of the transmission device 300, and the reception signal identification circuit 324 transmits. The signal quality is measured and calculated, and the reception parameter and the transmission signal quality are associated and stored in the data storage unit 330 (step S512). Specifically, the transmission device 300 sweeps the reception parameter of the transmission device 300 on the reception side in a state where the transmission parameter of the transmission device 200 on the transmission side is fixed to the best value in step S510, and the step shown in FIG. The processes of S102 to S107 are executed.
Here, the reception parameter is swept again and the transmission signal quality is measured in order to confirm whether or not the tentative best value of the reception parameter is really the best value due to the fluctuation of the transmission parameter.

Next, the reception signal control circuit 323 of the transmission device 300 sets a control signal for setting the reception parameter of the reception side equalization circuit 321 to the best value among the measurement values of the reception parameter measured in step S512. Input to the setting circuit 322. Next, the reception parameter setting circuit 322 changes the reception parameter according to the control signal (step S513). Further, in step S513, the transmission circuit unit 310 of the transmission device 300 transmits a change completion notification (“completion of adjustment” shown in FIG. 11) to the transmission device 200 on the transmission side via the pattern wiring transmission line 500. , Proceeds to the process of step S204 shown in FIG. 4, and ends this process.

Here, the best value in step S513 may be different from the provisional best value in step S503.
Further, it is determined whether or not the best value in step S513 is within a predetermined range having the tentative best value in step S503 as the median, and if the best value in step S513 is outside the predetermined range. , The process of FIG. 10 may be executed again, or the implementation of the high-speed signal transmission method according to the third embodiment may be stopped.
This is because the process shown in FIG. 10 assumes a case where the best value of the reception parameter does not fluctuate significantly.

Next, with reference to FIG. 11, the states of the reception parameter and the transmission parameter and the state of the pattern wiring transmission lines 400 and 500 when adjusting the high-speed signal in the transmission devices 200 and 300 according to the third embodiment will be described. To do. In FIG. 11, the transmission parameter setting range is 1 or more and N or less (N is a positive integer), and the reception parameter setting range is 1 or more and M or less (M is a positive integer). Further, the best value of the transmission parameter of the transmission device 200 is Nx, the best value of the reception parameter of the transmission device 300 is Mx, and the tentative best value is Mx'. Here, the best value Nx of the transmission parameter and the best value Mx of the reception parameter are the value of the transmission parameter and the value of the reception parameter that maximize the quality of the transmission signal between the transmission device 200 and the transmission device 300.

As shown in FIG. 11, the transmission parameter and the reception parameter are changed according to the order of the processes shown in the flowcharts of FIGS. 4 and 10. Specifically, first, in step S502 shown in FIG. 10, the reception parameter of the transmission device 300 on the reception side is swept from 1 to M in a state where the transmission parameter of the transmission device 200 on the transmission side is fixed to the initial setting value. The transmission signal quality is measured. That is, the transmission signal quality measurement and calculation process in step S502 is performed M times. Then, the value of the reception parameter corresponding to the best transmission signal quality among the transmission signal qualities measured in step S502 is set as a tentative best value Mx'(step S503).

Next, in steps S504 to S509, the transmission parameters of the transmission device 200 on the transmission side are swept from 1 to N in a state where the reception parameters of the transmission device 300 on the reception side are fixed to the tentative best value Mx'. , Transmission signal quality is measured. That is, the transmission signal quality measurement and calculation process in step S507 is performed N times. Then, in step S205 of FIG. 4, the transmission parameter of the transmission device 200 on the transmission side is set to the best value Nx.

Next, in step S512 again, with the transmission parameter of the transmission device 200 on the transmission side fixed at the best value Nx, the reception parameter of the transmission device 300 on the reception side is swept to 1 to M, and the transmission signal quality is obtained. Is measured. That is, the transmission signal quality measurement and calculation process in step S512 is performed M times. Then, the value Mx of the reception parameter corresponding to the best transmission signal quality among the transmission signal qualities measured in step S512 is set as the reception parameter (step S513).

That is, in the third embodiment, the measurement and calculation process of the transmission signal quality is performed 2M + N times. On the other hand, in the first embodiment, the transmission signal quality is measured and calculated M × N times. Therefore, under the conditions of N> 3 and M> 3, the high-speed signal transmission method according to the third embodiment has a higher number of measurements of the transmission signal quality and the transmission signal quality than the high-speed signal transmission method according to the first embodiment. The measurement time can be reduced.

The best value Mx may be different from the tentative best value Mx'. Further, it is determined whether or not the best value Mx is within a predetermined range with the provisional best value Mx'as the median value, and if the best value Mx is outside the predetermined range, FIG. Or may cancel the implementation of the high-speed signal transmission method according to the third embodiment.
This is because the process shown in FIG. 10 assumes a case where the best value of the reception parameter does not fluctuate significantly.

According to the high-speed signal transmission system 100, high-speed signal transmission devices 200, 300, high-speed signal transmission method, and program according to the third embodiment described above, the high-speed signal transmission system 100, high-speed signal according to the first embodiment. The same effects as those of the transmission devices 200, 300, the high-speed signal transmission method, and the program can be obtained.
Further, in the third embodiment, the measurement and calculation process of the transmission signal quality is performed 2M + N times, whereas in the first embodiment, the measurement and calculation process of the transmission signal quality is performed M × N times. Therefore, under the conditions of N> 3 and M> 3, the high-speed signal transmission method according to the third embodiment has a higher number of measurements of the transmission signal quality and the transmission signal quality than the high-speed signal transmission method according to the first embodiment. The measurement time can be reduced.

Other Embodiments Further, the high-speed signal transmission method according to the third embodiment may be applied to the high-speed signal transmission method according to the second embodiment. Here, the transmission device 300 of FIG. 2 is the side that requests the change of the transmission parameter, and the transmission device 200 is the side that receives the change of the transmission parameter.
Specifically, the transmission devices 200 and 300 input a pseudo random pattern for adjustment to the reception circuit units 220 and 320 of the other transmission devices 200 and 300. Further, one of the transmission devices 200 and 300 requests the transmission circuit units 210 and 310 and the other transmission devices 200 and 300 to change the transmission parameters. As a result, the high-speed signal line can be adjusted simultaneously in both the transmission devices 200 and 300 on the transmitting side and the transmission devices 200 and 300 on the receiving side, and the signal quality can be further improved without increasing the adjustment time. it can.

For example, the setting range of the transmission parameter is 1 or more and N or less (N is a positive integer), and the setting range of the reception parameter is 1 or more and M or less (M is a positive integer). Further, the best value of the transmission parameter of the transmission device 200 is Nx, the best value of the reception parameter is My, and the tentative best value is My'. Further, the best value of the transmission parameter of the transmission device 300 is Ny, the best value of the reception parameter is Mx, and the tentative best value is Mx'. Here, the best value Nx, Ny of the transmission parameter and the best value Mx, My of the reception parameter are the value of the transmission parameter and the value of the reception parameter that give the best transmission signal quality between the transmission device 200 and the transmission device 300. is there.

Then, first, in a state where the transmission parameter of the transmission device 200 on the transmission side is fixed to the initial setting value, the reception parameter of the transmission device 300 on the reception side is swept to 1 to M, and the transmission signal quality is measured. That is, the transmission signal quality is measured and calculated M times. Then, the value of the reception parameter corresponding to the best transmission signal quality among the measured transmission signal qualities is set as a tentative best value Mx'.

Next, with the reception parameter of the transmission device 300 on the receiving side fixed at the tentative best value Mx', the transmission parameter of the transmission device 200 on the transmitting side is swept from 1 to N, and the transmission signal quality is measured. To. That is, the transmission signal quality is measured and calculated N times. Then, the transmission parameter of the transmission device 200 on the transmission side is set to the best value Nx.

Next, again, with the transmission parameter of the transmission device 200 on the transmission side fixed at the best value Nx, the reception parameter of the transmission device 300 on the reception side is swept from 1 to M, and the transmission signal quality is measured. .. That is, the transmission signal quality is measured and calculated M times. Then, the value of the reception parameter corresponding to the best transmission signal quality among the measured transmission signal qualities is set as the best value Mx.

Similarly, with the transmission parameter of the transmission device 300 on the receiving side fixed to the initial setting value, the reception parameter of the transmission device 200 on the transmitting side is swept from 1 to M, and the transmission signal quality is measured. That is, the transmission signal quality is measured and calculated M times. Then, the value of the reception parameter corresponding to the best transmission signal quality among the measured transmission signal qualities is set as a tentative best value My'.

Next, with the reception parameter of the transmission device 200 on the transmitting side fixed at the tentative best value My', the transmission parameter of the transmission device 300 on the receiving side is swept from 1 to N, and the transmission signal quality is measured. To. That is, the transmission signal quality is measured and calculated N times. Then, the transmission parameter of the transmission device 300 on the receiving side is set to the best value Ny.

Next, again, with the transmission parameter of the transmission device 300 on the receiving side fixed at the best value Ny, the reception parameter of the transmission device 200 on the transmitting side is swept from 1 to M, and the transmission signal quality is measured. .. That is, the transmission signal quality measurement and calculation process in step S715 is performed M times. Then, the value of the reception parameter corresponding to the best transmission signal quality among the measured transmission signal qualities is set as the best value My.

That is, when the high-speed signal transmission method according to the third embodiment is applied to the high-speed signal transmission method according to the second embodiment, both the transmission device 200 on the transmitting side and the transmission device 300 on the receiving side transmit at almost the same time. The signal quality measurement and calculation process is performed M + N times. After that, with the transmission parameter of the transmission device 200 fixed at the best value Nx, the reception parameter is swept in the transmission device 300, and the transmission signal quality is measured M times. Further, in a state where the transmission parameter of the transmission device 300 is fixed to the best value Ny, the reception parameter is swept in the transmission device 200, and the transmission signal quality is measured M times. That is, the transmission signal quality is measured and calculated 3M + N times. On the other hand, in the first embodiment, the transmission signal quality is measured and calculated M × N times. Therefore, when the high-speed signal transmission method according to the third embodiment is applied to the high-speed signal transmission method according to the second embodiment, the high-speed signal transmission method according to the first embodiment under the conditions of N> 4 and M> 4. The signal quality can be improved while reducing the number of times the transmission signal quality is measured and the time for measuring the transmission signal quality.

The best value Mx may be different from the tentative best value Mx'. Further, it is determined whether or not the best value Mx is within a predetermined range with the provisional best value Mx'as the median value, and if the best value Mx is outside the predetermined range, the transmission device is again used. The above processing may be executed at 300, or the implementation of the high-speed signal transmission method may be stopped.
Similarly, the best value My may be different from the tentative best value My'. Further, it is determined whether or not the best value My is within a predetermined range with the provisional best value My'as the median value, and if the best value My is outside the predetermined range, the transmission device is again used. At 200, the above processing may be executed, or the implementation of the high-speed signal transmission method may be stopped.
This is because the above processing assumes a case where the best value of the reception parameter does not fluctuate significantly.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. For example, FIGS. 6, 9, and 11 show an example in which parameters are sequentially incremented to be swept, but the parameters may be sequentially decremented and swept.

Further, in the above-described embodiment, the present invention has been described as a hardware configuration, but the present invention is not limited thereto. INDUSTRIAL APPLICABILITY The present invention can also be realized by causing a CPU (Central Processing Unit) to execute a computer program according to the processing procedure shown in the flowcharts of FIGS. 3, 4, 7, 8 and 10.

In addition, the programs described above can be stored and supplied to a computer using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media (tangible storage media). Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory) CD-Rs, CDs. -R / W, including semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)). The program may also be supplied to the computer by various types of temporary computer readable media (transitory computer readable media). Examples of temporary computer-readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

Some or all of the above embodiments may also be described, but not limited to:
(Appendix 1)
A receiving circuit that receives signals from other high-speed signal transmission devices,
A transmission circuit unit that transmits a signal to the other high-speed signal transmission device,
For each transmission channel,
The transmission circuit unit transmits a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device.
The receiving circuit unit
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
The transmission circuit unit requests the other high-speed signal transmission device to change the transmission parameter for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device. A high-speed signal transmission device that transmits.
(Appendix 2)
The receiving circuit unit
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission device according to Appendix 1.
(Appendix 3)
A high-speed signal transmission system in which multiple high-speed signal transmission devices are communicably connected.
The high-speed signal transmission device is
A receiving circuit that receives signals from other high-speed signal transmission devices,
A transmission circuit unit that transmits a signal to the other high-speed signal transmission device,
For each transmission channel,
The transmission circuit unit transmits a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device.
The receiving circuit unit
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
The transmission circuit unit requests the other high-speed signal transmission device to change the transmission parameter for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device. A high-speed signal transmission system that transmits.
(Appendix 4)
The receiving circuit unit
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission system according to Appendix 3.
(Appendix 5)
A high-speed signal transmission method implemented in a high-speed signal transmission device that receives a signal from another high-speed signal transmission device and transmits a signal to the other high-speed signal transmission device.
The high-speed signal transmission device is used for each transmission channel.
A transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device is transmitted to the other high-speed signal transmission device.
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
A high-speed signal that transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. Transmission method.
(Appendix 6)
The high-speed signal transmission device is used for each transmission channel.
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission method according to Appendix 5.
(Appendix 7)
A high-speed signal transmission method implemented in the high-speed signal transmission device in a high-speed signal transmission system in which a plurality of high-speed signal transmission devices are communicably connected.
The high-speed signal transmission device is used for each transmission channel.
A transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device is transmitted to the other high-speed signal transmission device.
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
A high-speed signal that transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. Transmission method.
(Appendix 8)
The high-speed signal transmission device is used for each transmission channel.
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission method according to Appendix 7.
(Appendix 9)
For each transmission channel, the high-speed signal transmission device that receives the signal from the other high-speed signal transmission device and transmits the signal to the other high-speed signal transmission device.
A process of transmitting a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device, and
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
A process of determining the transmission parameter of the other high-speed signal transmission device as the best value of the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value.
A process of determining the reception parameter when the measured transmission signal quality becomes the best value as the best value of the reception parameter and setting the reception parameter to the best value of the reception parameter.
A process of transmitting a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. A program that executes.
(Appendix 10)
In the high-speed signal transmission device, for each transmission channel
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. Processing and
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. The process of determining the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. The process of determining the best value of the received parameter and
The program according to Appendix 9 for executing the above.
(Appendix 11)
In a high-speed signal transmission system in which a plurality of high-speed signal transmission devices are communicably connected, the high-speed signal transmission device is connected to each transmission channel.
A process of transmitting a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to another high-speed signal transmission device, and
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
A process of determining the transmission parameter of the other high-speed signal transmission device as the best value of the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value.
A process of determining the reception parameter when the measured transmission signal quality becomes the best value as the best value of the reception parameter and setting the reception parameter to the best value of the reception parameter.
A process of transmitting a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. A program that runs.
(Appendix 12)
In the high-speed signal transmission device, for each transmission channel
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. Processing and
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the tentative best value. The process of determining the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. The process of determining the best value of the received parameter and
11. The program according to Appendix 11.

100 High-speed signal transmission system 200, 300 High-speed signal transmission device 210, 310 Transmission circuit unit 211, 311 Random pattern generation circuit 212, 312 Selection circuit 213, 313 Transmission side equalization circuit 214, 314 Transmission parameter setting circuit 215, 315 Transmission signal Control circuits 216, 316 Switching circuits 220, 320 Reception circuits 221 and 321 Reception side equalization circuits 222, 322 Reception parameter setting circuits 223, 323 Reception signal control circuits 224, 324 Reception signal identification circuits 225, 325 Control data extraction circuit 230 , 330 Data storage

Claims (10)

A receiving circuit that receives signals from other high-speed signal transmission devices,
A transmission circuit unit that transmits a signal to the other high-speed signal transmission device,
For each transmission channel,
The transmission circuit unit transmits a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device.
The receiving circuit unit
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
The transmission circuit unit requests the other high-speed signal transmission device to change the transmission parameter for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device. A high-speed signal transmission device that transmits. The receiving circuit unit
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission device according to claim 1. A high-speed signal transmission system in which multiple high-speed signal transmission devices are communicably connected.
The high-speed signal transmission device is
A receiving circuit that receives signals from other high-speed signal transmission devices,
A transmission circuit unit that transmits a signal to the other high-speed signal transmission device,
For each transmission channel,
The transmission circuit unit transmits a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device.
The receiving circuit unit
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
The transmission circuit unit requests the other high-speed signal transmission device to change the transmission parameter for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device. A high-speed signal transmission system that transmits. The receiving circuit unit
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission system according to claim 3. A high-speed signal transmission method implemented in a high-speed signal transmission device that receives a signal from another high-speed signal transmission device and transmits a signal to the other high-speed signal transmission device.
The high-speed signal transmission device is used for each transmission channel.
A transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device is transmitted to the other high-speed signal transmission device.
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
A high-speed signal that transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. Transmission method. The high-speed signal transmission device is used for each transmission channel.
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission method according to claim 5. A high-speed signal transmission method implemented in the high-speed signal transmission device in a high-speed signal transmission system in which a plurality of high-speed signal transmission devices are communicably connected.
The high-speed signal transmission device is used for each transmission channel.
A transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device is transmitted to the other high-speed signal transmission device.
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
When the measured transmission signal quality becomes the best value, the transmission parameter of the other high-speed signal transmission device is determined to be the best value of the transmission parameter of the other high-speed signal transmission device.
The reception parameter when the measured transmission signal quality becomes the best value is determined as the best value of the reception parameter, and the reception parameter is set to the best value of the reception parameter.
A high-speed signal that transmits a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. Transmission method. The high-speed signal transmission device is used for each transmission channel.
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. ,
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the provisional best value. Determine the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. Determine the best value of the receive parameter,
The high-speed signal transmission method according to claim 7. For each transmission channel, the high-speed signal transmission device that receives the signal from the other high-speed signal transmission device and transmits the signal to the other high-speed signal transmission device.
A process of transmitting a transmission parameter change request for incrementing or decrementing the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device, and
Each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented, the reception parameter is swept to measure the transmission signal quality.
A process of determining the transmission parameter of the other high-speed signal transmission device as the best value of the transmission parameter of the other high-speed signal transmission device when the measured transmission signal quality becomes the best value.
A process of determining the reception parameter when the measured transmission signal quality becomes the best value as the best value of the reception parameter and setting the reception parameter to the best value of the reception parameter.
A process of transmitting a transmission parameter change request for setting the transmission parameter of the other high-speed signal transmission device to the best value of the transmission parameter of the other high-speed signal transmission device to the other high-speed signal transmission device. A program that executes. In the high-speed signal transmission device, for each transmission channel
With the transmission parameters of the other high-speed signal transmission device fixed to the initial setting values, the reception parameters are swept and the transmission signal quality is measured to determine a tentative best value of the reception parameters. Processing and
The other high-speed signal transmission is performed by measuring the transmission signal quality each time the transmission parameter of the other high-speed signal transmission device is incremented or decremented while the reception parameter is fixed to the tentative best value. The process of determining the best transmission parameters for the device,
The transmission signal quality is measured by sweeping the reception parameter in a state where the transmission parameter of the other high-speed signal transmission device is fixed to the best value of the transmission parameter of the other high-speed signal transmission device. The process of determining the best value of the received parameter and
The program according to claim 9, wherein the program is executed.

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