CN102938650A - Signal compensation method, serializer and deserializer - Google Patents
Signal compensation method, serializer and deserializer Download PDFInfo
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- CN102938650A CN102938650A CN201210447654XA CN201210447654A CN102938650A CN 102938650 A CN102938650 A CN 102938650A CN 201210447654X A CN201210447654X A CN 201210447654XA CN 201210447654 A CN201210447654 A CN 201210447654A CN 102938650 A CN102938650 A CN 102938650A
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Abstract
An embodiment of the invention provides a signal compensation method, a serializer and a deserializer. The signal compensation method includes: first temperature used for indicating temperature of transmission media is obtained, and two ends of the transmission media are respectively used for connecting the serializer and the deserializer in a serializer-deserializer; the coefficient is determined according to the first temperature and the corresponding relation of the first temperature and the coefficient; amplitude of a first electrical signal or a second electrical signal is compensated according to the coefficient, and the first electrical signal is to be transmitted through the transmission media; and the second electrical signal is already transmitted through the transmission media. By adopting the technical scheme, the electrical signals can be compensated according to the coefficient corresponding to the first temperature used for indicating temperature of transmission media, and accordingly error rate is reduced.
Description
Technical field
The embodiment of the invention relates to the communication technology, relates in particular to method, serializer and deserializer that signal is compensated.
Background technology
Serializer-deserializerSERDES (Serializer/Deserializer, SERDES) is a kind of device that the signal of telecommunication is changed.Comprise serializer and deserializer among the SERDES.Comprise the transmission medium for transmission of electric signals between described serializer and the described deserializer.The signal of telecommunication transmits and will decay by transmission medium, so that the error rate increases.
Summary of the invention
The embodiment of the invention provides a kind of method, serializer and deserializer that signal is compensated, and can compensate the signal of telecommunication, thereby reduce the error rate.
First aspect provides a kind of method that signal is compensated, and comprising:
Obtain the first temperature for the temperature that characterizes transmission medium, the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES; Corresponding relation according to described the first temperature and described the first temperature and coefficient is determined described coefficient; Compensate according to the amplitude of described coefficient to first signal of telecommunication or second signal of telecommunication, described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium; The signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.
In the possible implementation of the first of first aspect, the described pre-emphasis unit that is specially in the described serializer of the amplitude of described first signal of telecommunication being compensated according to described coefficient is carried out the preemphasis compensation according to pre emphasis factor to the amplitude of described first signal of telecommunication, and described coefficient is described pre emphasis factor; Perhaps the described balanced unit that is specially in the described deserializer of the amplitude of described second signal of telecommunication being compensated according to described coefficient carries out isostatic compensation according to equalizing coefficient to the amplitude of described second signal of telecommunication, and described coefficient is equalizing coefficient.
The implementation possible according to the first of first aspect, in the possible implementation of the second of first aspect, the described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises that also described pre-emphasis unit carries out the preemphasis compensation according to described pre emphasis factor to the dispersion of described first signal of telecommunication.
According to the possible implementation of the first of first aspect or the possible implementation of the second of first aspect, in the third possible implementation of first aspect, described described corresponding relation according to described the first temperature and described the first temperature and coefficient determines that described coefficient comprises:
Coefficient provides the unit to determine described pre emphasis factor;
The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises:
The described pre emphasis factor that described pre-emphasis unit provides the unit to determine according to described coefficient is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
Second aspect provides a kind of serializer, comprising:
Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES; Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient; Compensating unit is used for the coefficient determined according to described determining unit the amplitude of first signal of telecommunication is compensated, and described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium.
In the possible implementation of the first of second aspect, described compensating unit is specially pre-emphasis unit, is used for according to pre emphasis factor the amplitude of described first signal of telecommunication being carried out the preemphasis compensation, and described coefficient is described pre emphasis factor.
The implementation possible according to the first of second aspect, in the possible implementation of the second of second aspect, described pre-emphasis unit also is used for according to described pre emphasis factor the preemphasis compensation being carried out in the dispersion of described first signal of telecommunication.
According to the possible implementation of the first of second aspect or the possible implementation of the second of second aspect, in the third possible implementation of second aspect, described determining unit is specially coefficient the unit is provided, and is used for determining described pre emphasis factor;
The concrete described pre emphasis factor for providing the unit to determine according to described coefficient of described pre-emphasis unit is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
The third aspect provides a kind of deserializer, comprising:
Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES; Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient; Compensating unit compensates for the amplitude of the coefficient of determining according to described determining unit to second signal of telecommunication, the signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.
In the possible implementation of the first of the third aspect, described compensating unit is specially balanced unit, is used for according to equalizing coefficient the amplitude of described second signal of telecommunication being carried out isostatic compensation, and described coefficient is equalizing coefficient.
In the technique scheme, can the signal of telecommunication be compensated according to the coefficient corresponding with the first temperature of the temperature that is used for the sign transmission medium, thereby reduced the error rate.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of a kind of method that signal is compensated that Fig. 1 provides for the embodiment of the invention;
The structural representation of a kind of serializer that Fig. 2 provides for the embodiment of the invention;
The structural representation of a kind of deserializer that Fig. 3 provides for the embodiment of the invention;
The structural representation of the another kind of serializer that Fig. 4 provides for the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The flow chart of a kind of method that signal is compensated that Fig. 1 provides for the embodiment of the invention, as shown in Figure 1, described method comprises:
S110, obtain the first temperature for the temperature that characterizes transmission medium, the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES.
For instance, described serializer or described deserializer can get access to described the first temperature by temperature sensor.For example, described the first temperature temperature that can be described transmission medium.Described transmission medium can be the copper cash in cable or the printed circuit board (PCB) (printed circuit board is called for short PCB).Described the first temperature also can be the temperature of serializer or deserializer.Described the first temperature also can be the temperature of described transmission medium environment of living in.Described environment can be air or polytetrafluoroethylene.
For instance, described serializer and described deserializer can be chips.If serializer or deserializer are chip, the temperature sensor that is used for obtaining described the first temperature can be arranged at the inside of chip corresponding to the inside of chip corresponding to described serializer or described deserializer.Certainly, also can obtain with temperature sensor integrated in the described transmission medium described the first temperature.The embodiment of the invention does not limit the mode of obtaining described the first temperature.
S120, determine described coefficient according to the corresponding relation of described the first temperature and described the first temperature and coefficient.
For instance, obtain described the first temperature after, can search described coefficient corresponding to described the first temperature according to described corresponding relation.Described corresponding relation can be the corresponding relation of fixing, and also can be the corresponding relation that can dynamically adjust.
Described corresponding relation can embody by discrete or linear function, also can embody by corresponding table.
S130, compensate according to the amplitude of described coefficient to first signal of telecommunication or second signal of telecommunication, described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium; The signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.
Those skilled in the art will appreciate that in described first signal of telecommunication or described second signal of telecommunication and can comprise low frequency component and high fdrequency component.Wherein, high fdrequency component is the X subharmonic, and X is the odd number greater than 1.For instance, according to described coefficient the amplitude of described first signal of telecommunication or described second signal of telecommunication being compensated specifically can be that amplitude to the high fdrequency component in described first signal of telecommunication or described second signal of telecommunication compensates.
In the technique scheme, according to the described coefficient corresponding with described first temperature of the temperature that is used for characterizing described transmission medium described first signal of telecommunication or described second signal of telecommunication are compensated, thereby reduced the error rate.
Alternatively, in the method shown in Figure 1, the described pre-emphasis unit that is specially in the described serializer of the amplitude of described first signal of telecommunication being compensated according to described coefficient is carried out the preemphasis compensation according to pre emphasis factor to the amplitude of described first signal of telecommunication, and described coefficient is described pre emphasis factor; Perhaps
The described balanced unit that is specially in the described deserializer of the amplitude of described second signal of telecommunication being compensated according to described coefficient carries out isostatic compensation according to equalizing coefficient to the amplitude of described second signal of telecommunication, and described coefficient is equalizing coefficient.
For instance, described pre-emphasis unit can be the hardware cell in chip corresponding to described serializer.Described balanced unit can be the hardware cell in chip corresponding to described deserializer.
Alternatively, in the method shown in Figure 1, the described amplitude of described first signal of telecommunication being compensated according to described coefficient can also comprise that described pre-emphasis unit carries out the preemphasis compensation according to described pre emphasis factor to the dispersion of described first signal of telecommunication.
Alternatively, in the method shown in Figure 1, described described corresponding relation according to described the first temperature and described the first temperature and coefficient determines that described coefficient comprises: coefficient provides the unit to determine described pre emphasis factor;
The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises: the described pre emphasis factor that described pre-emphasis unit provides the unit to determine according to described coefficient is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
Those skilled in the art will appreciate that when described serializer sends the signal of telecommunication of a plurality of bits, need to send by bit.In addition, described serializer is carried out process of action need experience of the signal of telecommunication that sends a bit, this process need certain hour length.Specifically, described serializer need to be adjusted to current potential the corresponding current potential of bit to be sent, and keeps predetermined time length.In the technique scheme, be sent at described serializer after the signal of telecommunication of described the first bit, and begin to send before the signal of telecommunication of described the second bit amplitude to the signal of telecommunication of described the second bit at described serializer and carry out described preemphasis compensation and can improve the correctness of signal transmission.
In the technique scheme, according to pre emphasis factor or the equalizing coefficient corresponding with the first temperature of the temperature that is used for the sign transmission medium signal of telecommunication is compensated, thereby reduced the error rate.
The structural representation of a kind of serializer that Fig. 2 provides for the embodiment of the invention, described serializer can be carried out method shown in Figure 1.As shown in Figure 2, described serializer 200 can comprise:
Determining unit 220 is determined described coefficient for the first temperature of obtaining according to described acquiring unit 210 and the corresponding relation of described the first temperature and coefficient;
Compensating unit 230 is used for the described coefficient determined according to described determining unit 220 amplitude of first signal of telecommunication is compensated, and described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium.
Alternatively, in the serializer 200 shown in Figure 2, described compensating unit 230 is specially pre-emphasis unit, is used for according to pre emphasis factor the amplitude of described first signal of telecommunication being carried out the preemphasis compensation, and described coefficient is described pre emphasis factor.
Alternatively, in the serializer 200 shown in Figure 2, described pre-emphasis unit also is used for according to described pre emphasis factor the preemphasis compensation being carried out in the dispersion of described first signal of telecommunication.
Alternatively, in the serializer 200 shown in Figure 2, described determining unit 220 is specially coefficient provides the unit, is used for determining described pre emphasis factor;
The concrete described pre emphasis factor for providing the unit to determine according to described coefficient of described pre-emphasis unit is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
In the technique scheme, treat amplitude or the dispersion of the signal of telecommunication that transmits by transmission medium according to the pre emphasis factor corresponding with the first temperature of the temperature that is used for the sign transmission medium and carry out the preemphasis compensation, thereby reduced the error rate.
The structural representation of a kind of deserializer that Fig. 3 provides for the embodiment of the invention, described deserializer can be carried out method shown in Figure 1.As shown in Figure 3, described deserializer 300 comprises:
Determining unit 320 is determined described coefficient for the first temperature of obtaining according to described acquiring unit 310 and the corresponding relation of described the first temperature and coefficient;
Compensating unit 330 compensates the signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium for the amplitude of the coefficient of determining according to described determining unit 320 to second signal of telecommunication.
Alternatively, in the deserializer 300 shown in Figure 3, described compensating unit 330 is specially balanced unit, is used for according to equalizing coefficient the amplitude of described second signal of telecommunication being carried out isostatic compensation, and described coefficient is equalizing coefficient.
In the technique scheme, according to the equalizing coefficient corresponding with the first temperature of the temperature that is used for the sign transmission medium signal of telecommunication that transmits by transmission medium is carried out isostatic compensation, thereby reduced the error rate.
The structural representation of the another kind of serializer that Fig. 4 provides for the embodiment of the invention, described serializer can execution graph 1 described method.As shown in Figure 4, described serializer 400 comprises:
In the technique scheme, treat the signal of telecommunication that transmits by described transmission medium according to the described coefficient corresponding with described first temperature of the temperature that is used for characterizing described transmission medium and compensate, thereby reduced the error rate.
Alternatively, compensator 466 is specially pre-emphasis unit, is used for according to pre emphasis factor the amplitude of described first signal of telecommunication being carried out the preemphasis compensation, and described coefficient is pre emphasis factor.
Alternatively, described pre-emphasis unit also is used for according to described pre emphasis factor the preemphasis compensation being carried out in the dispersion of described first signal of telecommunication.
Alternatively, described determiner 464 is specially coefficient provides the unit, and described coefficient provides the unit to be used for determining described pre emphasis factor;
The described pre emphasis factor that described pre-emphasis unit provides the unit to determine according to described coefficient is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
In the technique scheme, treat amplitude or the dispersion of the signal of telecommunication that transmits by transmission medium according to the pre emphasis factor corresponding with the first temperature of the temperature that is used for the sign transmission medium and carry out the preemphasis compensation, thereby reduced the error rate.
Method, serializer and deserializer that signal is compensated that the embodiment of the invention provides can compensate the signal of telecommunication according to the coefficient corresponding with the first temperature of the temperature that is used for characterizing transmission medium, thereby reduced the error rate.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, and is the convenience described and succinct, and the specific works process of the system of foregoing description, device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described unit, can only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics of unit exists, and also can be integrated in the unit two or more unit.
If described function realizes with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: (english abbreviation is ROM for USB flash disk, portable hard drive, read-only memory, English full name is Read-Only Memory), the various media that can be program code stored such as random access memory (english abbreviation is RAM, and English full name is Random Access Memory), magnetic disc or CD.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (10)
1. the method that signal is compensated is characterized in that, comprising:
Obtain the first temperature for the temperature that characterizes transmission medium, the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;
Corresponding relation according to described the first temperature and described the first temperature and coefficient is determined described coefficient;
Compensate according to the amplitude of described coefficient to first signal of telecommunication or second signal of telecommunication, described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium; The signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.
2. method according to claim 1 is characterized in that,
The described pre-emphasis unit that is specially in the described serializer of the amplitude of described first signal of telecommunication being compensated according to described coefficient is carried out the preemphasis compensation according to pre emphasis factor to the amplitude of described first signal of telecommunication, and described coefficient is described pre emphasis factor; Perhaps
The described balanced unit that is specially in the described deserializer of the amplitude of described second signal of telecommunication being compensated according to described coefficient carries out isostatic compensation according to equalizing coefficient to the amplitude of described second signal of telecommunication, and described coefficient is equalizing coefficient.
3. method according to claim 2 is characterized in that,
The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises that also described pre-emphasis unit carries out the preemphasis compensation according to described pre emphasis factor to the dispersion of described first signal of telecommunication.
4. according to claim 2 or 3 described methods, it is characterized in that,
Described described corresponding relation according to described the first temperature and described the first temperature and coefficient determines that described coefficient comprises:
Coefficient provides the unit to determine described pre emphasis factor;
The described amplitude of described first signal of telecommunication being compensated according to described coefficient comprises:
The described pre emphasis factor that described pre-emphasis unit provides the unit to determine according to described coefficient is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
5. a serializer is characterized in that, comprising:
Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;
Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient;
Compensating unit is used for the coefficient determined according to described determining unit the amplitude of first signal of telecommunication is compensated, and described first signal of telecommunication is to treat the signal of telecommunication that transmits by described transmission medium.
6. serializer according to claim 5 is characterized in that,
Described compensating unit is specially pre-emphasis unit, is used for according to pre emphasis factor the amplitude of described first signal of telecommunication being carried out the preemphasis compensation, and described coefficient is described pre emphasis factor.
7. serializer according to claim 6 is characterized in that,
Described pre-emphasis unit also is used for according to described pre emphasis factor the preemphasis compensation being carried out in the dispersion of described first signal of telecommunication.
8. according to claim 6 or 7 described serializers, it is characterized in that,
Described determining unit is specially coefficient the unit is provided, and is used for determining described pre emphasis factor;
The concrete described pre emphasis factor for providing the unit to determine according to described coefficient of described pre-emphasis unit is sent at described serializer after the signal of telecommunication of the first bit, and the amplitude that begins to send at described serializer before the signal of telecommunication of the second bit the signal of telecommunication of described the second bit carries out described preemphasis compensation, and the signal of telecommunication of the signal of telecommunication of described the first bit and described the second bit is two adjacent in described first signal of telecommunication signals of telecommunication.
9. a deserializer is characterized in that, comprising:
Acquiring unit is used for obtaining the first temperature for the temperature that characterizes transmission medium, and the two ends of described transmission medium are respectively applied to connect serializer and the deserializer in the serializer-deserializerSERDES;
Determining unit is determined described coefficient for the first temperature of obtaining according to described acquiring unit and the corresponding relation of described the first temperature and coefficient;
Compensating unit compensates for the amplitude of the coefficient of determining according to described determining unit to second signal of telecommunication, the signal of telecommunication of described second signal of telecommunication for having transmitted by described transmission medium.
10. deserializer according to claim 9 is characterized in that,
Described compensating unit is specially balanced unit, is used for according to equalizing coefficient the amplitude of described second signal of telecommunication being carried out isostatic compensation, and described coefficient is equalizing coefficient.
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| CN112313881A (en) * | 2018-06-18 | 2021-02-02 | 华为技术有限公司 | SERDES with jitter injection self-stressing mechanism |
| CN112313881B (en) * | 2018-06-18 | 2021-11-09 | 华为技术有限公司 | SERDES with jitter injection self-stressing mechanism |
| CN112825562A (en) * | 2019-11-21 | 2021-05-21 | 杭州海康威视数字技术股份有限公司 | Video frame compensation method and device and video processing chip |
| CN112825562B (en) * | 2019-11-21 | 2022-11-01 | 杭州海康威视数字技术股份有限公司 | Video frame compensation method and device and video processing chip |
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