Signal waveform setting device

Abstract

To solve such a problem that quality improvement and cost reduction cannot be achieved due to increase in time cost and variations of hardware.SOLUTION: A signal waveform setting device 110 performs setting of a signal waveform in a circuit board 100 including: a transmission unit 101 which transmits an ultra-high-speed signal; a reception unit 103 which receives the ultra-high-speed signal; and an adjustment unit 102 which is arranged between the transmission unit and the reception unit to adjust a waveform of the ultra-high-speed signal. The signal waveform setting device comprises: a first function 111 which sets a characteristic of the ultra-high-speed signal transmitted from the transmission unit on the basis of a reception signal by the reception unit; a second function 112 which sets a characteristic of the ultra-high-speed signal received on the reception side of the adjustment unit on the basis of the reception signal by the reception unit; a third function 113 which sets a characteristic of the ultra-high-speed signal transmitted from the transmission side of the adjustment unit on the basis of the reception signal by the reception unit; and a fourth function 114 which sets a characteristic of the ultra-high-speed signal received by the reception unit on basis of the reception signal by the reception unit.SELECTED DRAWING: Figure 4

Description

Technical Field

[0005] , ,

[0001] The present invention relates to a signal waveform setting method, a signal waveform setting device, and a program.

Background Art

[0002] With the spread of portable information processing terminals such as smartphones and tablets, and the development of cloud services and IoT (Internet of Things) technologies, Internet traffic has been increasing steadily. On the other hand, each communication carrier is urgently required to reduce communication costs, and it is necessary to apply a further high-speed transmission technology for signals that can improve signal accommodation efficiency.

[0003] Particularly, in a communication device where the baud rate of signals wired in a circuit board is 10 Gbps or more, signal wiring technology and the selection of base materials have become major issues. Therefore, instead of directly connecting the transmission device and the reception device, it is necessary to optimize the electrical waveform of the ultra-high-speed signal between the transmission device and the reception device through a device having a waveform adjustment function such as a Signal-Conditioner between the devices. And, in order to optimize the electrical waveform, it is necessary to set the amplitude / enhancement of the transmission device, the amplitude / enhancement on the transmission side and the equalizer on the reception side of the device having a waveform adjustment function such as a Signal-Conditioner, and the equalizer of the reception device as parameters for each device.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described above, each setting value is fixed for each device, based on optimal settings determined from evaluation results of actual equipment and waveform simulations. Therefore, when redesigning the circuit board or changing devices, it is necessary to reconsider the optimal settings and set them as fixed values ​​again, which increases the time cost. In addition, individual variations due to differences in the transmit / receive characteristics of each device, PWB (Printed Wiring Board) wiring characteristics, and device material characteristics are not taken into consideration, resulting in the inability to improve quality or reduce costs by addressing such variations.

[0006] Here, Patent Document 1 describes changing the transmission and reception parameters in an electronic device by monitoring the signal reception status. However, Patent Document 1 does not consider changing the transmission and reception parameters of a device having the waveform adjustment function described above. As a result, when using a device that requires signal waveform adjustment, problems still arise such as increased time costs for adjusting the device settings and the inability to improve quality and reduce costs due to hardware variability.

[0007] Therefore, the object of the present invention is to provide a signal waveform setting method that can solve the above-mentioned problems of increased time costs and the inability to improve quality and reduce costs due to hardware variations. [Means for solving the problem]

[0008] One embodiment of the present invention is a signal waveform setting method, A method for setting a signal waveform on a circuit board comprising a transmitting unit that transmits an ultra-high-speed signal, a receiving unit that receives an ultra-high-speed signal, and an adjustment unit disposed between the transmitting unit and the receiving unit that adjusts the waveform of the ultra-high-speed signal, A first step involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit. A second step involves setting the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third step involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth step involves setting the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, Includes in any order This is the structure it takes.

[0009] Furthermore, a signal waveform setting device, which is one embodiment of the present invention, A signal waveform setting device for setting the signal waveform on a circuit board comprising a transmitting unit for transmitting an ultra-high-speed signal, a receiving unit for receiving an ultra-high-speed signal, and an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultra-high-speed signal, A first function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second function sets the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth function that sets the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, Equipped with, This is the structure it takes.

[0010] Furthermore, a circuit board that is one embodiment of the present invention is A circuit board comprising: a transmitting unit for transmitting ultra-high-speed signals; a receiving unit for receiving ultra-high-speed signals; an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultra-high-speed signals; and a signal waveform setting unit for setting the signal waveform, The signal waveform setting unit is, A first function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second function sets the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third function of setting the characteristics of the ultra-high speed signal transmitted from the transmission side of the adjustment unit based on the received signal by the reception unit, a fourth function of setting the characteristics of the ultra-high speed signal received by the reception unit based on the received signal by the reception unit, and adopts the following configuration.

[0011] Also, a program according to an aspect of the present invention is in an arithmetic unit that performs signal waveform setting on a circuit board including a transmission unit that transmits an ultra-high speed signal, a reception unit that receives an ultra-high speed signal, and an adjustment unit that is disposed between the transmission unit and the reception unit and adjusts the waveform of the ultra-high speed signal, a first function of setting the characteristics of the ultra-high speed signal transmitted from the transmission unit based on the received signal by the reception unit, a second function of setting the characteristics of the ultra-high speed signal received on the reception side of the adjustment unit based on the received signal by the reception unit, a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmission side of the adjustment unit based on the received signal by the reception unit, a fourth function of setting the characteristics of the ultra-high speed signal received by the reception unit based on the received signal by the reception unit, and realizes the following configuration.

Advantages of the Invention

[0012] With the present invention configured as described above, in a circuit board that transmits and receives ultra-high speed signals, it is possible to reduce the time cost when optimizing the signal waveform, and to improve quality and reduce costs.

Brief Description of the Drawings

[0013] [Figure 1] FIG. 1 is a block diagram showing the configuration of a circuit board according to Embodiment 1 of the present invention. [Figure 2] FIG. 2 is a flowchart showing the operation of the circuit board disclosed in FIG. 1. [Figure 3]It is a block diagram showing the configuration of a circuit board in Embodiment 2 of the present invention. [Figure 4] It is a block diagram showing the configuration of a signal waveform setting device in Embodiment 3 of the present invention. [Figure 5] It is a flowchart showing the operation of a signal waveform setting device in Embodiment 3 of the present invention.

Embodiments for Carrying Out the Invention

[0015] [Configuration] The circuit board 1 in the present invention has a function of optimizing the signal waveform of an ultra-high-speed signal (for example, 10 Gbps or more) in the circuit board, and is used in, for example, a communication device using an ultra-high-speed signal or a supercomputer.

[0016] As shown in FIG. 1, the circuit board 1 includes a transmission unit 10 that transmits an ultra-high-speed signal, an adjustment unit 20 that adjusts the waveform of the ultra-high-speed signal, a reception unit 30 that receives the ultra-high-speed signal, and a monitoring control unit 40 that automatically sets the set parameters of each unit. The functions of the transmission unit 10, the adjustment unit 20, the reception unit 30, and the monitoring control unit 40 may be realized by electronic circuits mounted in the circuit board 1, or may be realized by an arithmetic device mounted in the circuit board 1 executing a program.

[0017] In this embodiment, the monitoring control unit 40 first has the function of performing initial settings for amplitude / emphasis / equalizer for the transmitting unit 10, the adjustment unit 20, and the receiving unit 30. Furthermore, the monitoring control unit 40 automatically sets each setting value by sequentially executing the first, second, third, and fourth steps described below. In other words, the monitoring control unit 40 has a first function that performs the first step of setting the amplitude and emphasis settings of the signal waveform output from the upstream transmitting unit 10 (transmitting device) based on the result of error information detected by the downstream receiving unit 30 from the ultra-high-speed signal in the circuit board 1; a second function that performs the second step of setting the equalizer setting value on the receiving side of the adjustment unit 20 (device having waveform adjustment function); a third function that performs the third step of setting the amplitude / emphasis setting value on the transmitting side of the adjustment unit 20; and a fourth function that performs the fourth step of setting the equalizer setting value of the downstream receiving unit 30 (receiving device). Each function and each step will be described in detail below.

[0018] The monitoring control unit 40 performs the following processing as the first step of its first function (indicated by A1 in Figure 1 and step S1 in Figure 2). First, the monitoring control unit 40 gradually increases the amplitude setting value for the transmitting unit 10 from the minimum value to the maximum value, and searches for the interval (range) of amplitude values ​​in which the error count detected by the receiving unit 30 is at its minimum value (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum value (including error-free) as the amplitude setting value for the transmitting unit 10. The monitoring control unit 40 also gradually increases the emphasis setting value for the transmitting unit 10 from the minimum value to the maximum value, and searches for the interval (range) of emphasis values ​​in which the error count detected by the receiving unit 30 is at its minimum value (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum value (including error-free) as the emphasis setting value for the transmitting unit 10.

[0019] Furthermore, the monitoring control unit 40 is not limited to setting the set value to the midpoint of the interval of amplitude / emphasis values ​​when the error count detected by the receiving unit 30 is at its minimum value (including error-free). For example, the monitoring control unit 40 may set the set value to any of the amplitude / emphasis values ​​when the error count is at its minimum value (including error-free), or it may set the set value to a value calculated based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). In addition, the monitoring control unit 40 is not necessarily limited to setting the set value based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). It may also set the set value based on the amplitude / emphasis value when the error count falls within a predetermined value or range, or it may set the amplitude / emphasis set value based on other information of the signal received by the receiving unit 30.

[0020] The monitoring control unit 40 performs the following processing as the second step of the second function (indicated by A2 in Figure 1 and step S2 in Figure 2). First, the monitoring control unit 40 gradually increases the equalizer setting value from the minimum to the maximum value for the receiving side 21 of the adjustment unit 20, and searches for the interval (range) of equalizer values ​​in which the error count detected by the receiving unit 30 is at its minimum (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum (including error-free) as the equalizer setting value for the receiving side 21 of the adjustment unit 20. However, the monitoring control unit 40 is not limited to setting the midpoint of the interval of equalizer values ​​in which the error count detected by the receiving unit 30 is at its minimum (including error-free) as the setting value. For example, the monitoring control unit 40 may set one of the equalizer values ​​that result in the minimum error count (including error-free), or it may set a value calculated based on the equalizer value that results in the minimum error count (including error-free). Furthermore, the monitoring control unit 40 is not necessarily limited to setting the set value based on the equalizer value that results in the minimum error count (including error-free). It may also set the set value based on the equalizer value that results in the error count being a preset value or range, or it may set the equalizer set value based on other information from the signal received by the receiving unit 30.

[0021] The monitoring control unit 40 performs the following processing as a third step by the third function (reference numeral A3 in Figure 1, step S3 in Figure 2). First, the monitoring control unit 40 gradually increases the amplitude setting value for the transmitter side 22 of the adjustment unit 20 from the minimum value to the maximum value, and searches for the interval (range) of amplitude values ​​in which the error count detected by the receiver 30 is at its minimum value (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum value (including error-free) as the amplitude setting value for the transmitter side 22 of the adjustment unit 20. The monitoring control unit 40 also gradually increases the emphasis setting value for the transmitter side 22 of the adjustment unit 20 from the minimum value to the maximum value, and searches for the interval (range) of emphasis values ​​in which the error count detected by the receiver 30 is at its minimum value (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum value (including error-free) as the emphasis setting value for the transmitter side 22 of the adjustment unit 20.

[0022] Furthermore, the monitoring control unit 40 is not limited to setting the set value to the midpoint of the interval of amplitude / emphasis values ​​when the error count detected by the receiving unit 30 is at its minimum value (including error-free). For example, the monitoring control unit 40 may set the set value to any of the amplitude / emphasis values ​​when the error count is at its minimum value (including error-free), or it may set the set value to a value calculated based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). In addition, the monitoring control unit 40 is not necessarily limited to setting the set value based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). It may also set the set value based on the amplitude / emphasis value when the error count falls within a predetermined value or range, or it may set the amplitude / emphasis set value based on other information of the signal received by the receiving unit 30.

[0023] The monitoring control unit 40 performs the following processing as the fourth step of the fourth function (reference numeral A4 in Figure 1, step S4 in Figure 2). First, the monitoring control unit 40 gradually increases the equalizer setting value for the receiving unit 30 from the minimum value to the maximum value, and searches for the interval (range) of equalizer values ​​in which the error count detected by the receiving unit 30 is at its minimum value (including error-free). The monitoring control unit 40 sets the midpoint of the interval in which the error count is at its minimum value (including error-free) as the equalizer setting value for the receiving unit 30. Note that the monitoring control unit 40 is not limited to setting the midpoint of the interval of equalizer values ​​in which the error count detected by the receiving unit 30 is at its minimum value (including error-free) as the setting value. For example, the monitoring control unit 40 may set any of the equalizer values ​​in which the error count is at its minimum value (including error-free) as the setting value, or it may set a value calculated based on the equalizer values ​​in which the error count is at its minimum value (including error-free). Furthermore, the monitoring and control unit 40 is not necessarily limited to setting the setting value based on the equalizer value when the error count is at its minimum (including error-free). It may also set the setting value based on the equalizer value when the error count falls within a preset value or range, or based on other information from the signal received by the receiving unit 30.

[0024] It is preferable that the monitoring and control unit 40 performs the process of setting each setting value in the order of the first, second, third, and fourth steps described above, but each step may be executed in any order. Furthermore, if the receiving unit 30 does not detect an error-free state in each step, the monitoring and control unit 40 may repeat each step.

[0025] As described above, in this embodiment, the optimal parameter settings for each device, such as the transmitting unit 10, the adjustment unit 20, and the receiving unit 30, can be found and set by an algorithm automatically executed by the monitoring and control unit 40. Therefore, it is possible to reduce the time cost of considering and adjusting the setting values ​​for each device. Furthermore, it is possible to absorb the characteristics of the PCB (Printed Circuit Board) used in the circuit board and the characteristics of the devices. In addition, cost reduction is possible by replacing the PCB with an inexpensive material that has large individual differences in characteristics.

[0026] In addition, the above describes the case in which setting values ​​for characteristics of ultra-high-speed signals such as amplitude, emphasis, and equalizer are set. However, the monitoring and control unit 40 may also set setting values ​​for other characteristics of the ultra-high-speed signal based on the signal received by the receiving unit 30.

[0027] <Embodiment 2> Next, a second embodiment of the present invention will be described with reference to Figure 3. Figure 3 is a diagram illustrating the configuration of the circuit board in Embodiment 2.

[0028] The circuit board in this embodiment comprises multiple circuit boards 51, 52, 53, and 54, each of which is equipped with the transmitting unit 10, adjustment unit 20, receiving unit 30, and monitoring control unit 40 described in Embodiment 1. In other words, this embodiment is constructed by dividing the parts 10, 20, 30, and 40 of the circuit board 1 of Embodiment 1 into multiple circuit boards 51, 52, 53, and 54 and mounting them on each of them, connecting them with cables and connectors. The functions of the transmitting unit 10, adjustment unit 20, receiving unit 30, and monitoring control unit 40 in this embodiment are the same as described above.

[0029] In the example shown in Figure 3, one device (either the transmitter 10, adjustment unit 20, receiver 30, or monitoring and control unit 40) is mounted on each of the circuit boards 51, 52, 53, and 54. However, multiple devices may be mounted on a single circuit board.

[0030] <Embodiment 3> Next, a third embodiment of the present invention will be described with reference to Figures 4 and 5. Figure 4 is a block diagram showing the configuration of the signal waveform setting device in Embodiment 3, and Figure 5 is a flowchart showing the operation of the signal waveform setting device. In this embodiment, the configuration of the circuit board and signal waveform setting method described in the above-described embodiment is shown in general.

[0031] As shown in Figure 4, the signal waveform setting device 110 in this embodiment sets the signal waveform on a circuit board 100 which includes a transmitting unit 101 that transmits an ultra-high-speed signal, a receiving unit 103 that receives an ultra-high-speed signal, and an adjustment unit 102 that is positioned between the transmitting unit 101 and the receiving unit 103 and adjusts the waveform of the ultra-high-speed signal. The signal waveform setting device 110 is equipped with a first function 111, a second function 112, a third function 113, and a fourth function 114, which are constructed by a computing unit executing a program or by electronic circuits.

[0032] Then, the signal waveform setting device 110 executes the signal waveform setting method shown in the flowchart of Figure 5 using the first function 111, second function 112, third function 113, and fourth function 114 constructed as described above.

[0033] As shown in Figure 5, the signal waveform setting device 110 is The first step (step S101) sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit 101 based on the signal received by the receiving unit 103, The second step (step S102) involves setting the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit 102 based on the signal received by the receiving unit 103. A third step (step S103) involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit 102 based on the received signal from the receiving unit 103. The fourth step (step S104) involves setting the characteristics of the ultra-high-speed signal received by the receiving unit 103 based on the signal received by the receiving unit 103. It is configured to execute in any order.

[0034] 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. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, and semiconductor memory (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, and RAMs (Random Access Memory)). Programs may also be supplied to a computer using various types of transient computer-readable media. Examples of transient computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can be supplied to a computer via wired communication channels such as electric wires and optical fibers, or via wireless communication channels.

[0035] Although the present invention has been described above with reference to the embodiments described above, the present invention is not limited to the embodiments described above. Various modifications to the structure and details of the present invention can be made within the scope of the present invention as can be understood by those skilled in the art.

[0036] <Note> Some or all of the above embodiments may also be described as follows. The general configuration of the signal waveform setting method, signal waveform setting device, and program in the present invention will be described below. However, the present invention is not limited to the following configuration. (Note 1) A method for setting a signal waveform on a circuit board comprising a transmitting unit that transmits an ultra-high-speed signal, a receiving unit that receives an ultra-high-speed signal, and an adjustment unit disposed between the transmitting unit and the receiving unit that adjusts the waveform of the ultra-high-speed signal, A first step is to set the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second step involves setting the characteristics of the ultra-high-speed signal received on the receiving side of the adjustment unit based on the signal received by the receiving unit, A third step involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth step involves setting the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, Includes in any order Signal waveform setting method. (Note 2) The signal waveform setting method described in Appendix 1, The process is carried out in the order of the first step, the second step, the third step, and the fourth step. Signal waveform setting method. (Note 3) A signal waveform setting method described in Appendix 1 or 2, The first step involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the received signal by the receiving unit when the characteristics of the ultra-high-speed signal transmitted from the transmitting unit are gradually changed. The second step involves setting the characteristics of the ultra-high-speed signal received on the receiving side of the adjustment unit based on the received signal from the receiving unit when the characteristics of the ultra-high-speed signal received on the receiving side of the adjustment unit are gradually changed. The third step involves setting the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the received signal from the receiving unit when the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit are gradually changed. The fourth step involves setting the characteristics of the ultra-high-speed signal received by the receiving unit based on the received signal from the receiving unit when the characteristics of the ultra-high-speed signal received by the receiving unit are gradually changed. Signal waveform setting method. (Note 4) The signal waveform setting method described in Appendix 3, The first step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting unit based on the amplitude value corresponding to the case where the error count detected by the receiving unit when the amplitude of the ultra-high-speed signal transmitted from the transmitting unit is gradually increased from a minimum value to a maximum value is a predetermined value, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting unit based on the emphasis value corresponding to the case where the error count detected by the receiving unit when the emphasis of the ultra-high-speed signal transmitted from the transmitting unit is gradually increased from a minimum value to a maximum value is a predetermined value. The second step involves setting the equalizer of the ultra-high-speed signal received on the receiving side of the adjustment unit based on the equalizer value corresponding to the error count detected by the receiving unit when the equalizer of the ultra-high-speed signal received on the receiving side of the adjustment unit is gradually increased from a minimum value to a maximum value, and The third step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value corresponding to the case where the error count detected by the receiving unit is a predetermined value when the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value corresponding to the case where the error count detected by the receiving unit is a predetermined value when the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value. The fourth step is to set the equalizer of the ultra-high-speed signal received by the receiving unit based on the equalizer value corresponding to the error count by the receiving unit when the equalizer of the ultra-high-speed signal received by the receiving unit is gradually increased from a minimum value to a maximum value, and the error count by the receiving unit is a predetermined value. Signal waveform setting method. (Note 5) The signal waveform setting method described in Appendix 4, The first step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting unit based on the amplitude value when the error count detected by the receiving unit is at its minimum or error-free, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting unit based on the emphasis value when the error count detected by the receiving unit is at its minimum or error-free. The second step involves setting the equalizer value of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the equalizer value when the error count detected by the receiving unit reaches its minimum value or becomes error-free. The third step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value when the error count detected by the receiving unit is at its minimum or error-free, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value when the error count detected by the receiving unit is at its minimum or error-free. The fourth step is to set the equalizer of the ultra-high-speed signal received by the receiving unit based on the equalizer value when the error count detected by the receiving unit reaches its minimum value or becomes error-free. Signal waveform setting method. (Note 6) The signal waveform setting method described in Appendix 5, The first step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting unit to the midpoint of the interval of amplitude values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting unit to the midpoint of the interval of emphasis values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free. The second step involves setting the equalizer of the ultra-high-speed signal received by the receiving side of the adjustment unit to the midpoint of the interval of the equalizer value when the error count detected by the receiving unit is the minimum value or when the unit becomes error-free. The third step involves setting the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit to the midpoint of the interval of amplitude values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free, and setting the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit to the midpoint of the interval of emphasis values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free. The fourth step is to set the equalizer of the ultra-high-speed signal received by the receiving unit to the midpoint of the interval of the equalizer value when the error count detected by the receiving unit is the minimum value or when the signal becomes error-free. Signal waveform setting method. (Note 7) A signal waveform setting device for setting the signal waveform on a circuit board comprising a transmitting unit for transmitting an ultra-high-speed signal, a receiving unit for receiving an ultra-high-speed signal, and an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultra-high-speed signal, A first function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second function sets the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth function that sets the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, A signal waveform setting device equipped with the following features. (Note 7.1) The signal waveform setting device described in Appendix 7, The first function sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the received signal by the receiving unit when the characteristics of the ultra-high-speed signal transmitted from the transmitting unit are gradually changed. The second function sets the characteristics of the ultra-high-speed signal received on the receiving side of the adjustment unit based on the signal received by the receiving unit when the characteristics of the ultra-high-speed signal received on the receiving side of the adjustment unit are gradually changed. The third function sets the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the received signal from the receiving unit when the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit are gradually changed. The fourth function sets the characteristics of the ultra-high-speed signal received by the receiving unit based on the received signal from the receiving unit when the characteristics of the ultra-high-speed signal received by the receiving unit are gradually changed. Signal waveform setting device. (Note 7.2) The signal waveform setting device described in Appendix 7.1, The first function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting unit based on the amplitude value corresponding to the case where the error count detected by the receiving unit when the amplitude of the ultra-high-speed signal transmitted from the transmitting unit is gradually increased from a minimum value to a maximum value is a predetermined value, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting unit based on the emphasis value corresponding to the case where the error count detected by the receiving unit when the emphasis of the ultra-high-speed signal transmitted from the transmitting unit is gradually increased from a minimum value to a maximum value is a predetermined value. The second function sets the equalizer of the ultra-high-speed signal received on the receiving side of the adjustment unit based on the equalizer value corresponding to the error count detected by the receiving unit when the equalizer of the ultra-high-speed signal received on the receiving side of the adjustment unit is gradually increased from a minimum value to a maximum value, and The third function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value corresponding to the case where the error count detected by the receiving unit is a predetermined value when the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value corresponding to the case where the error count detected by the receiving unit is a predetermined value when the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value. The fourth function sets the equalizer of the ultra-high-speed signal received by the receiving unit based on the equalizer value corresponding to the error count by the receiving unit when the equalizer of the ultra-high-speed signal received by the receiving unit is gradually increased from a minimum value to a maximum value, provided that the error count by the receiving unit is a predetermined value. Signal waveform setting device. (Appendix 7.3) The signal waveform setting device described in Appendix 7.2, The first function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting unit based on the amplitude value when the error count detected by the receiving unit is at its minimum or error-free, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting unit based on the emphasis value when the error count detected by the receiving unit is at its minimum or error-free. The second function sets the equalizer value of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the equalizer value when the error count detected by the receiving unit is at its minimum or becomes error-free. The third function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value when the error count detected by the receiving unit is at its minimum or when it becomes error-free, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value when the error count detected by the receiving unit is at its minimum or when it becomes error-free. The fourth function sets the equalizer of the ultra-high-speed signal received by the receiving unit based on the equalizer value when the error count detected by the receiving unit is at its minimum or becomes error-free. Signal waveform setting device. (Appendix 7.4) The signal waveform setting device described in Appendix 7.3, The first function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting unit to the midpoint of the interval of amplitude values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting unit to the midpoint of the interval of emphasis values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free. The second function sets the equalizer of the ultra-high-speed signal received by the receiving side of the adjustment unit to the midpoint of the interval of the equalizer value when the error count detected by the receiving unit is the minimum value or when the unit becomes error-free. The third function sets the amplitude of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit to the midpoint of the interval of amplitude values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free, and sets the emphasis of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit to the midpoint of the interval of emphasis values ​​when the error count detected by the receiving unit is at its minimum value or when the signal becomes error-free. The fourth function sets the equalizer of the ultra-high-speed signal received by the receiving unit to the midpoint of the interval of the equalizer value when the error count detected by the receiving unit is the minimum value or when the signal becomes error-free. Signal waveform setting device. (Note 8) A circuit board comprising: a transmitting unit for transmitting ultra-high-speed signals; a receiving unit for receiving ultra-high-speed signals; an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultra-high-speed signals; and a signal waveform setting unit for setting the signal waveform, The signal waveform setting unit is, A first function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second function sets the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth function that sets the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, Equipped with, Circuit board. (Note 9) In a circuit board comprising a transmitting unit that transmits ultra-high-speed signals, a receiving unit that receives ultra-high-speed signals, and an adjustment unit disposed between the transmitting unit and the receiving unit that adjusts the waveform of the ultra-high-speed signals, a calculation device that sets the signal waveform is provided. A first function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting unit based on the signal received by the receiving unit, A second function sets the characteristics of the ultra-high-speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit, A third function that sets the characteristics of the ultra-high-speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit, A fourth function that sets the characteristics of the ultra-high-speed signal received by the receiving unit based on the signal received by the receiving unit, A program to achieve this. [Explanation of Symbols]

[0037] 1 Circuit board 10 Transmitter 20 Adjustment part 21 Receiving side of the adjustment unit 22 Transmitter side of adjustment unit 30 Receiver 40 Monitoring and Control Unit 51, 52, 53, 54 Circuit boards 100 circuit boards 101 Transmitter 102 Adjustment section 103 Receiving Unit 110 Signal waveform setting device 111 First function 112 Second function 113 Third function 114 Fourth function

Claims

1. A signal waveform setting device for setting the signal waveform on a circuit board comprising a transmitting unit for transmitting a signal, a receiving unit for receiving the signal, and an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the signal, A first function that sets the amplitude or emphasis of the signal transmitted from the transmitting unit based on the error count detected by the receiving unit, A second function sets the equalizer of the signal received by the receiving side of the adjustment unit based on the error count detected by the receiving unit, A third function that sets the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on the error count detected by the receiving unit, A fourth function that sets the equalizer of the signal received by the receiving unit based on the error count detected by the receiving unit, A signal waveform setting device equipped with the following features.

2. A method for setting a signal waveform in a circuit board comprising a transmitting unit that transmits a signal, a receiving unit that receives the signal, and an adjustment unit disposed between the transmitting unit and the receiving unit that adjusts the waveform of the signal, A first step is to set the amplitude or emphasis of the signal transmitted from the transmitting unit based on the error count detected by the receiving unit, A second step involves setting the equalizer of the signal received by the receiving side of the adjustment unit based on the error count detected by the receiving unit. A third step involves setting the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on the error count detected by the receiving unit. A fourth step involves setting the equalizer of the signal received by the receiving unit based on the error count detected by the receiving unit, Includes in any order Signal waveform setting method.

3. A circuit board comprising: a transmitting unit for transmitting a signal; a receiving unit for receiving the signal; an adjustment unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the signal; and a signal waveform setting unit for setting the signal waveform, The signal waveform setting unit is, A first function that sets the amplitude or emphasis of the signal transmitted from the transmitting unit based on the error count detected by the receiving unit, A second function sets the equalizer of the signal received by the receiving side of the adjustment unit based on the error count detected by the receiving unit, A third function that sets the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on the error count detected by the receiving unit, A fourth function that sets the equalizer of the signal received by the receiving unit based on the error count detected by the receiving unit, Equipped with, Circuit board.

4. In a circuit board comprising a transmitting unit that transmits a signal, a receiving unit that receives the signal, and an adjustment unit disposed between the transmitting unit and the receiving unit that adjusts the waveform of the signal, a calculation device for setting the signal waveform is provided. A first function that sets the amplitude or emphasis of the signal transmitted from the transmitting unit based on the error count detected by the receiving unit, A second function sets the equalizer of the signal received by the receiving side of the adjustment unit based on the error count detected by the receiving unit, A third function that sets the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on the error count detected by the receiving unit, A fourth function that sets the equalizer of the signal received by the receiving unit based on the error count detected by the receiving unit, A program to achieve this.

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