CN117856920A - Method, system, medium and device for eliminating emission light eye mask - Google Patents
Method, system, medium and device for eliminating emission light eye mask Download PDFInfo
- Publication number
- CN117856920A CN117856920A CN202410124987.1A CN202410124987A CN117856920A CN 117856920 A CN117856920 A CN 117856920A CN 202410124987 A CN202410124987 A CN 202410124987A CN 117856920 A CN117856920 A CN 117856920A
- Authority
- CN
- China
- Prior art keywords
- eye
- eye diagram
- diagram
- needs
- rising edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010586 diagram Methods 0.000 claims abstract description 175
- 230000000630 rising effect Effects 0.000 claims abstract description 74
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000004044 response Effects 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The invention provides a method, a system, a medium and equipment for eliminating an emission light eye mask, which comprises the following steps: determining a maximum point in time in the eye height of the preset intermediate eye diagram; measuring the eye heights of an upper eye pattern and a lower eye pattern by taking a preset middle eye height as a reference; if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge; repeating the above steps until the upper eye pattern and the lower eye pattern reach the same eye height as the preset middle eye pattern. The invention has strong adaptability, and in practical application, the characteristics of eye patterns can be different along with the different lasers, the different environment temperatures and the different optical fiber characteristics, so that the skew is different; these differences do not affect the effectiveness of the method of the present invention; the method can eliminate eye diagrams under different conditions; the method of the invention can well compensate the characteristics of the direct modulation laser, and has good compensation effect on different lasers.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a system, a medium, and a device for eliminating a transmitted optical eye mask.
Background
PAM4 eye skew refers to the relative time delay between the three eye diagrams. Due to the characteristics of the direct modulation laser, the rising edge of the eye pattern is faster, the falling edge is slower, and the relative time change between the three eye patterns occurs in the actual eye pattern, so that the eye pattern is skewed, the upper eye pattern is advanced, and the lower eye pattern is retarded, thus affecting the decision of the level of the receiving end.
If the eye-diagram is large, i.e. the three eye-diagrams of the eye-diagrams are significantly skewed, in this case the eye heights of the three eye-diagrams are sampled at the same time, e.g. at the position of the highest eye-diagram in the middle, the upper eye-diagram and the lower eye-diagram are not sampled at the position of the highest eye-diagram, so that in the actual level decision, if the middle eye-diagram is taken as a time reference, the distances between the 0 level and the 1 level and between the 2 level and the 3 level are pulled up, and difficulty is generated for the level decision, which results in that errors are more likely to occur.
Therefore, a new solution is needed to improve the above technical problems.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide a method, system, medium and apparatus for eliminating an emitted light eye mask.
According to the method for eliminating the emission light eye mask provided by the invention, the method comprises the following steps:
step S1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
step S2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking the preset middle eye height in the step S1 as a reference;
step S3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
step S4: and repeating the steps S1-S3 until the upper eye pattern and the lower eye pattern reach the same eye height as the preset middle eye pattern.
Preferably, the step S3 starts from the transmitting end, adjusts the relative speed of the rising edge and the falling edge of the eye pattern by adjusting the rail-to-rail voltages of the P-pipe and the N-pipe of the Driver of the transmitting end, and eliminates the eye pattern skew, and includes the following steps:
step S3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
step S3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
step S3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
Preferably, the step S3 starts from the receiving end, adjusts the relative speed of the rising edge and the falling edge of the received eye pattern by adjusting the pre and post variables in the pulse response, and eliminates the eye pattern skew, and includes the following steps:
step 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
step 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
The invention also provides a system for eliminating the transmitted light eye pattern skew, which comprises the following modules:
module M1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
module M2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking a preset middle eye height in a module M1 as a reference;
module M3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
module M4: and repeatedly calling the modules M1-M3 until the upper eye diagram and the lower eye diagram reach the same eye height as the preset middle eye diagram.
Preferably, the module M3 starts from the transmitting end, adjusts the relative speed of the rising edge and the falling edge of the eye pattern by adjusting the rail-to-rail voltages of the P-pipe and the N-pipe of the transmitting end Driver, and eliminates the eye pattern skew, and includes the following modules:
module M3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
module M3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
module M3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
Preferably, the module M3 starts from the receiving end, adjusts the relative speed of the rising edge and the falling edge of the received eye pattern by adjusting the pre and post variables in the pulse response, and eliminates the eye pattern skew, and includes the following modules:
module 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
module 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
The present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, performs the steps of the method of eliminating the transmit optical eye mask described above.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, which when executed by the processor implements the steps of the method of eliminating the transmit eye pattern skew described above.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has strong adaptability, and in practical application, the characteristics of eye patterns can be different along with the different lasers, the different environment temperatures and the different optical fiber characteristics, so that the skew is different; these differences do not affect the effectiveness of the method of the present invention; the method can eliminate eye diagrams under different conditions;
2. the method can well compensate the characteristics of the directly modulated laser (namely, the rising edge of the emitted optical signal is faster and the falling edge is slower), and has good compensation effect on different lasers, so that no extra requirement is provided for the performance of the laser at the transmitting end, and no requirement is provided for the consistency of different systems;
3. the method of the invention can use the original equipment of the transmitting end and the receiving end to adjust without increasing the hardware complexity of the system and introducing new equipment.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a driving circuit diagram of the present invention;
fig. 2 is a flow diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1:
according to the method for eliminating the emission light eye mask provided by the invention, the method comprises the following steps:
step S1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
step S2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking the preset middle eye height in the step S1 as a reference;
step S3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
step S4: and repeating the steps S1-S3 until the upper eye pattern and the lower eye pattern reach the same eye height as the preset middle eye pattern.
Step S3, starting from a transmitting end, adjusting the relative speed of the rising edge and the falling edge of an eye pattern by respectively adjusting the rail-to-rail voltages of a P pipe and an N pipe of a transmitting end Driver, and eliminating the eye pattern skew, and comprises the following steps:
step S3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
step S3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
step S3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
The present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, performs the steps of the method of eliminating the transmit optical eye mask described above.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, which when executed by the processor implements the steps of the method of eliminating the transmit eye pattern skew described above.
The present invention also provides a system for eliminating an emission light eye mask, which can be implemented by executing the flow steps of the method for eliminating an emission light eye mask, that is, a person skilled in the art can understand the method for eliminating an emission light eye mask as a preferred embodiment of the system for eliminating an emission light eye mask.
Example 2:
example 2 is a preferable example of example 1 to more specifically explain the present invention.
Step S3, starting from the receiving end, adjusts the relative speed of the rising edge and the falling edge of the received eye pattern by adjusting the pre and post variables in the pulse response, and eliminates the eye pattern skew, comprising the following steps:
step 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
step 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
Example 3:
the invention also provides a system for eliminating the transmitted light eye pattern skew, which comprises the following modules:
module M1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
module M2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking a preset middle eye height in a module M1 as a reference;
module M3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
module M4: and repeatedly calling the modules M1-M3 until the upper eye diagram and the lower eye diagram reach the same eye height as the preset middle eye diagram.
Starting from the transmitting end, the module M3 adjusts the relative speed of the rising edge and the falling edge of an eye pattern by respectively adjusting the rail-to-rail voltages of the P pipe and the N pipe of the Driver of the transmitting end, and eliminates the eye pattern skew, and the module comprises the following modules:
module M3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
module M3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
module M3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
Example 4:
example 4 is a preferable example of example 3 to more specifically explain the present invention.
The module M3, starting from the receiving end, adjusts the relative speed of the rising edge and the falling edge of the received eye pattern by adjusting the pre and post variables in the pulse response, and eliminates the eye pattern skew, and includes the following modules:
module 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
module 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
Example 5:
the invention provides a method for eliminating PAM4 eye-mask, which comprises the following steps:
PAM 4-eye skew occurs because of the characteristics of a directly modulated laser, with a fast rising edge and a slow falling edge, which results in the upper eye being advanced relative to the middle eye and the lower eye being retarded relative to the middle eye. By compensating the ascending and descending time difference, the eye pattern can be righted, and the effect of optimizing the receiving end performance is achieved. The specific implementation methods are as follows:
starting from the transmitting end: the rail-to-rail voltages of the P pipe and the N pipe of the transmitting end Driver are respectively adjusted, so that the relative speeds of the rising edge and the falling edge of an eye pattern are adjusted, and the eye pattern skew is eliminated.
The common driving circuit shown in fig. 1 can adjust the gains of the P-tube and the N-tube by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, thereby achieving the effect of adjusting the relative speed of rising and falling of the eye pattern.
When the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, we need to slow the rising edge and fast the falling edge, thus increasing Vb so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination may result in a reduced P-tube gain and an increased N-tube gain, thereby slowing the rising edge, slowing the falling edge, pulling the upper eye behind, and advancing the lower eye.
When the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, we need to tune the rising edge fast and the falling edge slow, thus reducing Vb so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination may result in a stronger P-tube gain and weaker N-tube gain, thereby making the rising edge faster, the falling edge slower, the upper eye diagram earlier, and the lower eye diagram later.
Starting from the receiving end: the eye-mask is eliminated by adjusting the pre and post variables in the pulse response to adjust the relative speed of the rising and falling edges of the received eye pattern.
When the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and the Pulse response needs to be regulated, so that the pre compensation is reduced and the post compensation is increased.
When the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
The implementation process comprises the following steps: firstly, determining the time point of the maximum eye height of a middle eye diagram, taking the time point as a reference to measure the eye heights of an upper eye diagram and a lower eye diagram, and adjusting the relative speed of a rising edge and a falling edge by the two adjusting methods if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the middle eye height; the above sampling and adjustment process is repeated until the upper and lower eye patterns reach the same eye height as the middle eye pattern.
The person skilled in the art will understand this embodiment as a more specific description of embodiment 1, embodiment 2, embodiment 3, embodiment 4.
Those skilled in the art will appreciate that the invention provides a system and its individual devices, modules, units, etc. that can be implemented entirely by logic programming of method steps, in addition to being implemented as pure computer readable program code, in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units for realizing various functions included in the system can also be regarded as structures in the hardware component; means, modules, and units for implementing the various functions may also be considered as either software modules for implementing the methods or structures within hardware components.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (8)
1. A method of eliminating an emitted light eye mask, the method comprising the steps of:
step S1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
step S2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking the preset middle eye height in the step S1 as a reference;
step S3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
step S4: and repeating the steps S1-S3 until the upper eye pattern and the lower eye pattern reach the same eye height as the preset middle eye pattern.
2. The method for eliminating the eye-mask of the emitted light according to claim 1, wherein the step S3, starting from the emitting end, adjusts the relative speed of the rising edge and the falling edge of the eye-mask by adjusting the rail-to-rail voltages of the P-pipe and the N-pipe of the emitting end Driver, respectively, and the method comprises the following steps:
step S3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
step S3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
step S3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
3. The method for eliminating the eye-mask of the emitted light according to claim 1, wherein the step S3, starting from the receiving end, adjusts the relative speed of the rising edge and the falling edge of the received eye-mask by adjusting the pre and post variables in the pulse response, and eliminates the eye-mask, comprises the steps of:
step 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
step 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
4. A system for eliminating an emitted light eye mask, the system comprising:
module M1: determining a maximum point in time in the eye height of the preset intermediate eye diagram;
module M2: measuring the eye heights of an upper eye pattern and a lower eye pattern by taking a preset middle eye height in a module M1 as a reference;
module M3: if the eye heights of the upper eye diagram and the lower eye diagram are smaller than the preset middle eye height, adjusting the relative speed of the rising edge and the falling edge;
module M4: and repeatedly calling the modules M1-M3 until the upper eye diagram and the lower eye diagram reach the same eye height as the preset middle eye diagram.
5. The system for eliminating eye-mask of claim 4, wherein the module M3, starting from the transmitting terminal, adjusts the relative speed of the rising and falling edges of the eye by adjusting the P-tube and N-tube rail-to-rail voltages of the transmitting terminal Driver, respectively, and eliminates eye-mask, comprising the following modules:
module M3.1: the gain of the P tube and the gain of the N tube are adjusted by adjusting the relative ratio of the common modulus of the Vb level and the Vin level, and the rising speed and the falling speed of an eye pattern are adjusted relatively;
module M3.2: when the upper eye diagram is advanced relative to the middle eye diagram and the lower eye diagram is retarded relative to the middle eye diagram, the rising edge needs to be slowed down and the falling edge needs to be slowed down, so that Vb needs to be increased so that VDD-Vb decreases; it is necessary to increase the Vin common mode level so that Vin increases in level to ground; such a combination results in a reduced P-tube gain and an enhanced N-tube gain, thereby slowing the rising edge, slowing the falling edge, dragging the upper eye pattern, and advancing the lower eye pattern;
module M3.3: when the upper eye diagram lags with respect to the middle eye diagram and the lower eye diagram advances with respect to the middle eye diagram, the rising edge needs to be adjusted faster and the falling edge needs to be adjusted slower, so Vb needs to be reduced so that VDD-Vb increases; the Vin common mode level needs to be reduced so that the level of Vin to ground is reduced; such a combination results in a stronger P-tube gain and weaker N-tube gain, which results in a faster rising edge, a slower falling edge, an earlier eye diagram, and a later eye diagram.
6. The system for eliminating eye-mask of claim 4, wherein the module M3, starting from the receiving end, adjusts the relative speed of the rising and falling edges of the received eye pattern by adjusting pre and post variables in the pulse response, and eliminates eye-mask, comprising the following modules:
module 3.1: when the upper eye diagram advances relative to the middle eye diagram and the lower eye diagram lags relative to the middle eye diagram, the rising edge needs to be regulated slowly and the falling edge needs to be regulated quickly, and at the moment, pulse response needs to be regulated, so that pre compensation is reduced and post compensation is increased;
module 3.2: when the upper eye diagram lags behind the middle eye diagram and the lower eye diagram advances behind the middle eye diagram, the rising edge needs to be adjusted fast, the falling edge needs to be adjusted slowly, and the Pulse response needs to be adjusted at the moment, so that the pre compensation is increased and the post compensation is reduced.
7. A computer-readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method of eliminating a transmit light eye mask as claimed in any one of claims 1 to 3.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program when executed by the processor implements the steps of the method of eliminating an emitted light eye mask as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410124987.1A CN117856920A (en) | 2024-01-29 | 2024-01-29 | Method, system, medium and device for eliminating emission light eye mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410124987.1A CN117856920A (en) | 2024-01-29 | 2024-01-29 | Method, system, medium and device for eliminating emission light eye mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117856920A true CN117856920A (en) | 2024-04-09 |
Family
ID=90528959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410124987.1A Pending CN117856920A (en) | 2024-01-29 | 2024-01-29 | Method, system, medium and device for eliminating emission light eye mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117856920A (en) |
-
2024
- 2024-01-29 CN CN202410124987.1A patent/CN117856920A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9355054B2 (en) | Digital calibration-based skew cancellation for long-reach MIPI D-PHY serial links | |
| US20050218945A1 (en) | Output buffer circuit and semiconductor integrated circuit | |
| US5969555A (en) | Pulse width forming circuit | |
| CN117856920A (en) | Method, system, medium and device for eliminating emission light eye mask | |
| EP1536577A1 (en) | Burst signal extinction ratio control circuit, integrated circuit thereof, burst signal extinction ratio control method, computer program, and laser diode drive circuit | |
| US7697370B2 (en) | Semiconductor memory device using modulation clock signal and method for operating the same | |
| US4884278A (en) | Semiconductor laser modulation control system | |
| US10965292B1 (en) | Delay-locked loop device and operation method therefor | |
| CN105790781A (en) | Feedback control method of communication receiver | |
| KR20230098764A (en) | Delay control system | |
| US7203225B2 (en) | Method of phase controlling of a data signal, counter clock circuit arrangement, and interface device | |
| KR102414817B1 (en) | Delay-locked loop device and operation method thereof | |
| US20030115493A1 (en) | Method and apparatus for optimizing clock distribution to reduce the effect of power supply noise | |
| US20200036507A1 (en) | Control signal transmission and reception system and control signal transmission and reception method | |
| CN113302849B (en) | System and method for reducing optical laser output distortion | |
| CN101141204B (en) | Optical amplifier gain control method and device for optical transmission system | |
| US20070205926A1 (en) | Interface circuit and binary data transfer method | |
| JP4867676B2 (en) | Equalizer adjustment circuit, equalizer adjustment method, and electronic device | |
| CN112737573A (en) | Clock skew calibration system, method and equipment based on daisy chain and computer storage medium | |
| US5991059A (en) | Marshalling in optical TDMA systems | |
| JP4954935B2 (en) | Optical transmission apparatus and optical transmission method | |
| JP2009039783A (en) | Laser apparatus for patterning at light guide plate of back light unit and method for forming pattern at light guide plate of back light unit using thereof | |
| JP2001127614A (en) | Semiconductor integrated circuit and its impedance control method | |
| WO2024038543A1 (en) | Optically modulated signal generation device and transmission module | |
| CN116956235A (en) | Clock leakage compensation method and system for optical fiber communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |