CN105099806A - Clock switch method and device - Google Patents
Clock switch method and device Download PDFInfo
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- CN105099806A CN105099806A CN201410216091.2A CN201410216091A CN105099806A CN 105099806 A CN105099806 A CN 105099806A CN 201410216091 A CN201410216091 A CN 201410216091A CN 105099806 A CN105099806 A CN 105099806A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
The invention provides a clock switch method and device, and solves the problems of the slow clock switching speed and low switching efficiency. The method comprises detecting a clock state of a master lock business in the same clock domain, and then judging whether the master clock business needs to be switched; and, if the master clock business needs to be switched, an available slave clock business is selected from a slave clock domain to be taken as a new master clock business. Compared with the prior art, when the fact that the master clock business needs to be switched is detected, the method selects the slave clock business capable of being used normally to be taken as the new master clock business; and, when the slave clock business capable of being normally used as the master clock business needs to be switched, a first selected switched object is not the available slave clock business determined after multiple times of selection and switching. The problems of the slow clock switching speed and the low switching efficiency are prevented.
Description
Technical field
The present invention relates to grouping conveying network technical field, particularly relate to a kind of clock status and detect and changing method and device.
Background technology
At grouping conveying network (PTN, PacketTransportNetwork) can to time division multiplexing (TDM in, TimeDvisionMultiplexing) pseudo wire emulation (PWE3, Pseudo-WireEmulationEdge-to-Edge) business carries out data penetration transmission, compared with traditional data tranmission techniques, tdm data transmission rate is fixing, 8000 frames per second, therefore, TDM business transmission requirement ensures transmitting terminal and receiving terminal clock high level of synchronization, so just can avoid the error code caused because clock is asynchronous, slip or other serious problem, so, even more important to the detection of clock status.
Existing common TDMPWE3 business clock state-detection has adaptive clock recovery and differential clocks to recover two kinds of modes, in a clock zone, when the packet not receiving business data packet that PSN transmits, PSN side transmits is improper, local terminal bag buffer memory occurs overflowing event up and down, then think that clock recovery state is abnormal, thus cause TDM business not forward normally.
In TDMPWE3 business, many TDM business can be created in a clock zone, in many TDM business that this creates, one is had to be master clock business, all the other are all from clock business, in business transmitting procedure, abnormal can recovery by main business clock is there is from business clock, in the prior art, when main business clock occurs abnormal, need this master clock business to report processing platform, user needs manually to choose one from clock business as new master clock business by processing platform; Based in prior art to the switching of master-salve clock business, have following 2 problems: (1) needs the manual switchover thought, resource of losing time; (2) artificial switch can not ensure to choose from clock business whether can normally use from clock business, if can not normally use, follow-up must again choosing proceeds to switch until available from clock business, and this reduces the efficiency that system responds clock recovery state to a great extent.
Therefore, how can fast and the switching of effective response clock status is technical problem urgently to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of clock-switching method and device, can solve the problem that clock switch speed is slow and switching efficiency is not high.
In order to solve the problem, present applicant proposes a kind of clock-switching method, comprising:
The clock status of master clock business in same clock zone is detected;
Judge that described master clock business is the need of switching, in this way, from described clock zone select one available from clock business as new master clock business.
In an embodiment of the present invention, from described clock zone, selection one is available specifically comprises from clock business as new master clock business:
What obtain in described clock zone is available from clock business;
From described available from clock business select one as new master clock business.
In an embodiment of the present invention, the available process from clock business in the described clock zone of described acquisition comprises:
Before judging in described clock zone that master clock service needed switches, whether the clock status from clock business detected in described clock zone is abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business;
Or
After judging in described clock zone that master clock service needed switches, whether the clock status corresponding from clock business detected in described clock zone be abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business.
In an embodiment of the present invention, there is abnormal comprising in the described clock status from clock business:
Packet forwarding network side does not transmit TDM service packet;
Or
The TDM service packet that Packet forwarding network side transmits is improper.
In an embodiment of the present invention, from described clock zone, select one availablely to comprise from the mode of clock business as new master clock business:
From available in described clock zone from clock business Stochastic choice one as new master clock business; Or
From available described clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
In order to solve the problem, the application also provides a kind of clock switching device, it is characterized in that, comprising: detection module, processing module;
Described detection module is used for detecting the clock status of master clock business in same clock zone;
Described processing module for judging that described master clock business is the need of switching, in this way, from described clock zone select one available from clock business as new master clock business.
In an embodiment of the present invention, described processing module comprises acquiring unit and selected cell; Described processing module selects one availablely specifically to comprise from clock business as new master clock business from described clock zone:
It is available from clock business that described acquiring unit obtains in described clock zone;
Described selected cell from described available from clock business select one as new master clock business.
In an embodiment of the present invention, the available process from clock business that described acquiring unit obtains in described clock zone comprises:
Before judging in described clock zone that master clock service needed switches, whether the clock status from clock business detected in described clock zone is abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business;
Or
After judging in described clock zone that master clock service needed switches, whether the clock status corresponding from clock business detected in described clock zone be abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business.
In an embodiment of the present invention, described acquiring unit detects and occurs abnormal comprising from the clock status of clock business:
The TDM service packet that Packet forwarding network side does not transmit;
Or
The TDM service packet that Packet forwarding network side transmits is improper.
In an embodiment of the present invention, described selected cell selects one availablely to comprise from the mode of clock business as new master clock business from described clock zone:
From available in described clock zone from clock business Stochastic choice one as new master clock business; Or
From available described clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
The invention has the beneficial effects as follows:
The invention provides a kind of clock-switching method and device, solve the problem that clock switch speed is slow and switching efficiency is not high.The application comprises and detecting the clock status of master clock business in same clock zone; Then judge that master clock business is the need of switching, in this way, from clock zone select one available from clock business as new master clock business.Compared with prior art, the application is when detecting that master clock service needed switches, in clock zone select one can normally use from clock business as new master clock business, this can normally use from clock business for master clock service needed switch time, first object be switched preferably chosen, but not through repeatedly select switch after determine available from clock business.Avoid slow to clock switch speed and that switching efficiency is not high problem.
Accompanying drawing explanation
Fig. 1 is the clock-switching method flow chart that first embodiment of the invention provides;
Fig. 2 is the method flow diagram of the clock status detecting master-salve clock business while first embodiment of the invention provides;
When the master clock service needed that Fig. 3 first embodiment of the invention provides switches, carry out the method flow diagram detected from the clock status of clock business;
Fig. 4 is the clock switching device structural representation that second embodiment of the invention provides.
Embodiment
In the present invention, the clock status of master clock business in same clock zone is detected; Judge that this master clock business is the need of switching, in this way, from described clock zone select one available from clock business as new master clock business.In another embodiment of the invention, to choose in clock zone one availablely to comprise from clock business as new master clock business procedure: obtain clock zone available from clock business, then from this available select from clock business one available from clock business as new master clock business; In an alternative embodiment of the invention, the available mode from clock business in clock zone that obtains comprises: before master clock service needed switches, whether that detects in clock zone is abnormal from clock business, in this way, marking from clock business then to this exception, what choose that reference numerals is less than pre-determined threshold is available from clock business from clock business; Can also be after master clock service needed switches, whether that detects in clock zone is abnormal from clock business, in this way, marking from clock business then to this exception, what choose that reference numerals is less than pre-determined threshold is available from clock business from clock business, in the present embodiment, this pre-determined threshold is occur abnormal number of times at most in one-period.By adopting the above-mentioned changing method in the application, the problem that clock switch speed is slow and switching efficiency is not high can be solved.
In order to can better understand the application, be described further below in conjunction with the content of specific embodiment to the application:
Embodiment one:
Fig. 1 is the clock-switching method flow chart provided in the present embodiment, comprising:
Step 101: the clock status detecting master clock business in clock zone;
Step 102: master clock service needed switch time, choose one available from clock business as new master clock business.
In step 101, the object detecting master clock service condition in clock zone guarantees that the clock status of master clock business recovers normal, if the clock recovery of master clock business occurs abnormal, the normal transmission of business in whole clock zone can be affected, in the present embodiment, judge that the common situations of master clock service clock recovery exception comprises: do not receive the network packet that bag switching network (PSN) side transmits; Receive bag switching network (PSN) side and transmit improper network packet; There is at least one in spilling event up and down in the buffer area of receiving terminal, in the present embodiment, receive PSN side to send over improper network packet and comprise: the network data packet number transmitted is lost, Abnormal Packet or receive the invalid bag of Lbit, certainly, judge that the clock status of master clock business occurs that abnormal situation is not limited to several situations described above.
In a step 102, when judging that master clock service needed switches, choose in same clock zone one available from clock business as new master clock business.In the present embodiment, described available from clock business be switch before and after can normally use from clock business (when occurring that abnormal number of times is less than pre-determined threshold from clock business continuity in a specific period, all thinking that this can normally use from clock business).In the present embodiment, judge that master clock business comprises the need of switching: judge that the clock status of master clock business occurs whether abnormal number of times exceedes parameter preset continuously, this parameter preset is that abnormal maximum number of times appear in the clock status of master clock business in one-period continuously.In the present embodiment, preferably when the clock status of this master clock business occurs that abnormal number of times exceedes parameter preset, the clock status flag bit of this master clock business is set to 1, represents that this master clock service needed switches.
Further, in the present embodiment, from clock zone, one is selected availablely to comprise from the preferred steps of clock business as new master clock business: what first obtain clock zone is available from clock business; From clock business, one is selected as new master clock business from available.
Further, in the present embodiment, the available process from clock business obtained in clock zone comprises with any one under type:
A: before judging that master clock service needed switches, whether the clock status from clock business detected in this clock zone there is exception, in this way, marking from clock business then to this appearance exception, in a specific period, abnormal number of times is there is continuously in this mark in order to record this clock status from clock business, when this exceedes pre-determined threshold from the number of times of clock service marker, illustrate that this is unavailable from clock business, therefore, preferably this unavailable clock status flag bit from clock business is set to 1, maybe this is set to 1 from the forwarding state flag bit of business, concrete set-up mode is not limit, if do not exceed pre-determined threshold, illustrate that this is available from clock business from clock business, therefore, it can be used as available from clock business, see Fig. 2, be provide in the present embodiment while detect the method flow diagram of the clock status of master-salve clock business:
Step 201: the clock status of master-salve clock business is detected;
Step 202: judge that master clock business is the need of switching, in this way, enters step 203; As no, enter step 201;
Step 203: judged whether available from clock business, in this way, entered step 204; As no, enter step 205;
Step 204: select one as new master clock business;
Step 205: repair system.
B: after judging that master clock service needed switches, whether the clock status from clock business detected in this clock zone there is exception, in this way, marking from clock business then to this appearance exception, in a specific period, abnormal number of times is there is continuously in this mark in order to record this clock status from clock business, when this exceedes pre-determined threshold from the number of times of clock service marker, illustrate that this is unavailable from clock business; If do not exceed pre-determined threshold, illustrate that this is available from clock business from clock business, therefore, it can be used as available from clock business; In which, the processing mode after mark is identical with mode A.In the present embodiment, in order to illustrate, suppose to there is a master clock business and one in clock zone from clock business, see Fig. 3, for the main business clock provided in the present embodiment need switch time, carry out the method flow diagram detected from the clock status of clock business, wherein, detect from the clock status of clock business and determine preferably by detection Packet forwarding state:
Step 301: master clock service needed switches;
Whether step 302: exist from the prerequisite of clock business, judge from the Packet forwarding state of clock business abnormal, in this way, enter step 303; As no, enter step 304;
Step 303: judge whether this exceedes pre-determined threshold from the number of times of clock business packet forwarding state exception, in this way, enters step 305; As no, enter step 304;
Step 304: this is switched to master clock business from clock business;
Step 305: should be unavailable from clock business from clock business.
In above-mentioned two kinds of modes, described pre-determined threshold is occur abnormal maximum number of times continuously from the clock status of clock business in one-period; In the present embodiment, preferably judge that the clock status of master clock business needs to switch pre-conditioned with judge from clock business whether can pre-conditioned identical, can certainly difference.
In above-mentioned two kinds of modes, before carrying out detecting from the clock status of clock business in clock zone, need to judge whether exist from clock business in clock zone, if existed, then process normally; If there is no, need to process according to the concrete condition of system, simultaneously, in the present embodiment, to detecting from clock business in clock zone, when detect all unavailable from clock business time, also need to process according to the concrete condition of system, such as, the clock status of master clock business is resetted or repair system etc., in the present embodiment, exist in preferred clock zone from clock business and exist available from clock business, therefore, above situation does not repeat them here.
Further, in the present embodiment, detect and occur extremely whether having exception preferably by detection from the Packet forwarding state of clock business from the clock status of clock business, specifically comprise: do not receive the TDM service packet that Packet forwarding network side transmits; Or it is improper to receive the TDM service packet that Packet forwarding network side transmits, in the present embodiment, judge that TDM service packet that Packet forwarding network side transmits is improper to comprise: the network data packet number transmitted is lost, Abnormal Packet or receive the invalid bag of Lbit, certainly, judge that the clock status of master clock business occurs that abnormal situation is not limited to several situations described above.
Further, in the present embodiment, from clock zone, select one availablely to comprise with any one under type from clock business as the mode of new master clock business:
A1: from available in clock zone from clock business Stochastic choice one as new master clock business;
B1: from available clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
In the present embodiment, choose available from clock business as after new master clock business, by current need switch master clock business switch to from clock business.
Adopt any one in aforesaid way, can normally using from clock business of selection can both be ensured.
The clock-switching method adopting the present embodiment to provide, can solve the problem that clock switch speed is slow and switching efficiency is not high.
Embodiment two:
Provide a kind of clock switching device in the present embodiment, see Fig. 3, this device comprises: detection module 401, processing module 402;
Detection module 401 is for detecting the clock status of master clock business in same clock zone; The object detecting master clock service condition in clock zone guarantees that the clock status of master clock business recovers normal, if the clock recovery of master clock business occurs abnormal, the normal transmission of business in whole clock zone can be affected, in the present embodiment, judge that the common situations of master clock service clock recovery exception comprises: do not receive the network packet that bag switching network (PSN) side transmits; Receive bag switching network (PSN) side and transmit improper network packet; There is at least one in spilling event up and down in the buffer area of receiving terminal, in the present embodiment, PSN side sends over improper network packet and comprises: the network data packet number that transmits is lost, Abnormal Packet or receive the invalid bag of Lbit, certainly, judge that the clock status of master clock business occurs that abnormal situation is not limited to several situations described above.
Processing module 402 when judging that master clock service needed switches, choose in this clock zone one available from clock business as new master clock business.In the present embodiment, described available from clock business be switch before and after can normally use from clock business (when occurring that abnormal number of times is less than pre-determined threshold from clock business continuity in a specific period, all thinking that this can normally use from clock business).In the present embodiment, processing module 402 also comprises thresholding setting unit 4023, and described thresholding setting unit 4023 is for arranging threshold parameter, and in the present embodiment, described thresholding setting unit 4023 is for arranging parameter preset and pre-determined threshold;
Processing module 402 judges that master clock business comprises the need of switching: judge that the clock status of master clock business occurs whether abnormal number of times exceedes parameter preset continuously, and this parameter preset is that abnormal maximum number of times appear in the clock status of master clock business in one-period continuously.In the present embodiment, preferably when the clock status of this master clock business occurs that abnormal number of times exceedes parameter preset, the clock status flag bit of this master clock business is set to 1, represents that this master clock service needed switches.
Further, in the present embodiment, processing module 402 comprises acquiring unit 4021 and selected cell 4022, and acquiring unit 4021 is available from clock business for what obtain in clock zone; Selected cell 4022 for selecting one as new master clock business from available from clock business.
Further, in the present embodiment, the available process from clock business that selected cell 4022 obtains in clock zone comprises with any one under type:
A: before judging that master clock service needed switches, whether the clock status from clock business detected in this clock zone there is exception, in this way, marking from clock business then to this appearance exception, in a specific period, abnormal number of times is there is continuously in this mark in order to record this clock status from clock business, when this exceedes pre-determined threshold from the number of times of clock service marker, illustrate that this is unavailable from clock business, therefore, preferably this unavailable clock status flag bit from clock business is set to 1, maybe this is set to 1 from the forwarding state flag bit of business, concrete set-up mode is not limit, if do not exceed pre-determined threshold, illustrate that this is available from clock business from clock business, therefore, it can be used as available from clock business,
B: after judging that master clock service needed switches, whether the clock status from clock business detected in this clock zone there is exception, in this way, marking from clock business then to this appearance exception, in a specific period, abnormal number of times is there is continuously in this mark in order to record this clock status from clock business, when this exceedes pre-determined threshold from the number of times of clock service marker, illustrate that this is unavailable from clock business; If do not exceed pre-determined threshold, illustrate that this is available from clock business from clock business, therefore, it can be used as available from clock business; In which, the processing mode after mark is identical with mode A.
In above-mentioned two kinds of modes, described pre-determined threshold is occur abnormal maximum number of times continuously from the clock status of clock business in one-period; In the present embodiment, preferably judge that the clock status of master clock business needs to switch pre-conditioned with judge from clock business whether can pre-conditioned identical, can certainly difference.
In above-mentioned two kinds of modes, before carrying out detecting from the clock status of clock business in clock zone, need to judge whether exist from clock business in clock zone, if existed, then process normally; If there is no, need to process according to the concrete condition of system, simultaneously, in the present embodiment, to detecting from clock business in clock zone, when detect all unavailable from clock business time, also need to process according to the concrete condition of system, such as, the clock status of master clock business is resetted or repair system etc., in the present embodiment, exist in preferred clock zone from clock business and exist available from clock business, therefore, above situation does not repeat them here.
Further, in the present embodiment, acquiring unit 4021 detects and occurs extremely whether having exception preferably by detection from the Packet forwarding state of clock business from the clock status of clock business, specifically comprises: do not receive the TDM service packet that Packet forwarding network side transmits; Or it is improper to receive the TDM service packet that Packet forwarding network side transmits, in the present embodiment, judge that TDM service packet that Packet forwarding network side transmits is improper to comprise: the network data packet number transmitted is lost, Abnormal Packet or receive the invalid bag of Lbit, certainly, judge that the clock status of master clock business occurs that abnormal situation is not limited to several situations described above.
Further, in the present embodiment, selected cell 4022 selects one availablely to comprise with any one under type from clock business as the mode of new master clock business from clock zone:
A1: from available in clock zone from clock business Stochastic choice one as new master clock business;
B1: from available clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
In the present embodiment, choose available from clock business as after new master clock business, by current need switch master clock business switch to from clock business.
When carrying out clock and switching, the clock switching device in the present embodiment, can solve the problem that clock switch speed is slow and switching efficiency is not high.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a clock-switching method, is characterized in that, comprising:
The clock status of master clock business in same clock zone is detected;
Judge that described master clock business is the need of switching, in this way, from described clock zone select one available from clock business as new master clock business.
2. clock-switching method as claimed in claim 1, is characterized in that, from described clock zone, selection one is available specifically comprises from clock business as new master clock business:
What obtain in described clock zone is available from clock business;
From described available from clock business select one as new master clock business.
3. clock-switching method as claimed in claim 2, it is characterized in that, the available process from clock business in the described clock zone of described acquisition comprises:
Before judging in described clock zone that master clock service needed switches, whether the clock status from clock business detected in described clock zone is abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business;
Or
After judging in described clock zone that master clock service needed switches, whether the clock status corresponding from clock business detected in described clock zone be abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business.
4. clock-switching method as claimed in claim 3, is characterized in that, abnormal comprising appears in the described clock status from clock business:
Packet forwarding network side does not transmit TDM service packet;
Or
The TDM service packet that Packet forwarding network side transmits is improper.
5. clock-switching method as claimed in claim 3, is characterized in that, selects one availablely to comprise from the mode of clock business as new master clock business from described clock zone:
From available in described clock zone from clock business Stochastic choice one as new master clock business;
Or
From available described clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
6. a clock switching device, is characterized in that, comprising: detection module, processing module;
Described detection module is used for detecting the clock status of master clock business in same clock zone;
Described processing module for judging that described master clock business is the need of switching, in this way, from described clock zone select one available from clock business as new master clock business.
7. clock switching device as claimed in claim 6, it is characterized in that, described processing module comprises acquiring unit and selected cell; Described processing module selects one availablely specifically to comprise from clock business as new master clock business from described clock zone:
It is available from clock business that described acquiring unit obtains in described clock zone;
Described selected cell from described available from clock business select one as new master clock business.
8. clock switching device as claimed in claim 7, it is characterized in that, the available process from clock business that described acquiring unit obtains in described clock zone comprises:
Before judging in described clock zone that master clock service needed switches, whether the clock status from clock business detected in described clock zone is abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business;
Or
After judging in described clock zone that master clock service needed switches, whether the clock status corresponding from clock business detected in described clock zone be abnormal, if any, mark from clock business described, choose mark number of times be less than pre-determined threshold from clock business as available from clock business.
9. clock switching device as claimed in claim 8, is characterized in that, described acquiring unit detects and occurs abnormal comprising from the clock status of clock business:
The TDM service packet that Packet forwarding network side does not transmit;
Or
The TDM service packet that Packet forwarding network side transmits is improper.
10. clock switching device as claimed in claim 8, is characterized in that, described selected cell selects one availablely to comprise from the mode of clock business as new master clock business from described clock zone:
From available in described clock zone from clock business Stochastic choice one as new master clock business;
Or
From available described clock zone select to occur from clock business frequency of abnormity minimum from clock business as new master clock business.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216091.2A CN105099806A (en) | 2014-05-21 | 2014-05-21 | Clock switch method and device |
| PCT/CN2014/087230 WO2015176442A1 (en) | 2014-05-21 | 2014-09-23 | Clock switching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216091.2A CN105099806A (en) | 2014-05-21 | 2014-05-21 | Clock switch method and device |
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| CN105099806A true CN105099806A (en) | 2015-11-25 |
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| CN201410216091.2A Pending CN105099806A (en) | 2014-05-21 | 2014-05-21 | Clock switch method and device |
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| CN (1) | CN105099806A (en) |
| WO (1) | WO2015176442A1 (en) |
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| WO2020019633A1 (en) * | 2018-07-24 | 2020-01-30 | 中国电子科技集团公司第二十四研究所 | Circuit for generating multi-phase clock having random disturbance added thereto |
| CN113495832A (en) * | 2020-04-05 | 2021-10-12 | 杭州迪普科技股份有限公司 | Cache region leakage detection system and method thereof |
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| CN102487301A (en) * | 2010-12-01 | 2012-06-06 | 中兴通讯股份有限公司 | Method and device for recovering multilink clock |
| CN102013920A (en) * | 2010-12-03 | 2011-04-13 | 中兴通讯股份有限公司 | Clock backup method and system for time division duplex base station |
| CN102263630A (en) * | 2011-07-21 | 2011-11-30 | 中兴通讯股份有限公司 | Clock source selection method |
| CN102347814A (en) * | 2011-10-11 | 2012-02-08 | 上海电力学院 | Slave clock regulation method based on master clock frequency difference |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020019633A1 (en) * | 2018-07-24 | 2020-01-30 | 中国电子科技集团公司第二十四研究所 | Circuit for generating multi-phase clock having random disturbance added thereto |
| US11323129B2 (en) | 2018-07-24 | 2022-05-03 | No.24 Research Institute Of China Electronics Technology Group Corporation | Circuit for generating multi-phase clock having random disturbance added thereto |
| CN113495832A (en) * | 2020-04-05 | 2021-10-12 | 杭州迪普科技股份有限公司 | Cache region leakage detection system and method thereof |
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| WO2015176442A1 (en) | 2015-11-26 |
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