CN1128510C - Single board with non-return standby protection - Google Patents
Single board with non-return standby protection Download PDFInfo
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- CN1128510C CN1128510C CN 01105237 CN01105237A CN1128510C CN 1128510 C CN1128510 C CN 1128510C CN 01105237 CN01105237 CN 01105237 CN 01105237 A CN01105237 A CN 01105237A CN 1128510 C CN1128510 C CN 1128510C
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- plate
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- 238000003466 welding Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 6
- 230000037431 insertion Effects 0.000 abstract description 6
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The present invention discloses a single plate for realizing irrevocable backup protection. A counter is arranged on the single plate, and is connected with four comparators A to D, and the clearing end of the counter receives the control signal of the other plate and the signal of the plate plus a forcible closing command signal; the clock input end of the counter is connected with a system clock, and the output end of the counter is connected with the input ends of the comparator A, B, C, D. The present invention can reliably complete the irrevocable protection function between the single plates backing up each other so as to ensure that the insertion of any single plate can not affect an operating system, and the phenomenon of interface chip damage caused by the instantaneous simultaneous output of the two plates during changeover can be avoided.
Description
The present invention relates to communication field, the particularly single board backup of communication apparatus protection.
In communication apparatus, in order to guarantee the stable operation of equipment as much as possible, need carry out between plate backup protection mutually to the important veneer in position wherein.Even the veneer generation abnormal failure of so working, business also can be switched to standby plate and work on, the damage of a unlikely because veneer and the Network relevant with this node paralysed.
Aspect single-chip protection, two kinds of implementations of recoverable design and irrevocable formula design are arranged.
The standby plate hight of priority ratio that wherein recoverable design is meant main board is if main board and standby plate are fixed on main board work the time all on the throne.This mode has drawback to exist for the stable operation of equipment.Because at this moment as if standby plate steady operation, caused the switching of the insertion of main board can be caused professional instantaneous interruption.
The design of irrevocable formula is meant that the priority of main board is identical with standby plate, as long as plate steady operation wherein, then the insertion of another piece plate can not exert an influence to system.But, in the existing irrevocable formula design, when another piece veneer inserts, exist of short duration in output, the phenomenon that causes interface chip to damage.
The purpose of this invention is to provide a kind of veneer of realizing irrevocable formula backup protection; the insertion of its in use any plate can not exerted an influence to other veneers of working; also adopt simultaneously measure to export the damage that causes interface chip simultaneously, and can accurately carry out the control command of positive opening and shutoff to avoid switching moments two plates.
For achieving the above object, the technical scheme of the veneer of the present invention's proposition is:
Veneer is provided with a counter, and described counter connects four comparator A-D; Described veneer receives the notification signal and the control signal of present the other side's plate state of living in that the other side's plate sends by control line, and under default setting, described control line is in high level;
The pressure that the clear terminal of described counter receives the control signal of described control line and this plate turn-off command signal with after signal, the input end of clock welding system clock of counter, the input of the output termination of counter 4 comparator A, B, C, D; Under default setting, the counter Enable Pin is effective high level;
This plate was opened output when the interface chip control end of this plate was low level.
When described veneer inserted the major trough position of frame, comparator A and B were in effective status; The output of comparator A and this plate positive opening signal with after signal export by control line; The Enable Pin of the output termination counter of comparator B, the output of comparator B and the pressure of this plate turn-off command signal with after deliver to the interface chip control end of this plate; When Counter Value greater than a value, the output step-down level of comparator A, the control line of then giving the other side's plate is a low level; If Counter Value is greater than the b value, the output step-down level of comparator B, the interface chip control end step-down level of this plate, interface chip output is opened; The counter Enable Pin neutralizes, and counter stops counting;
Be equipped with the groove position if this plate inserts, then comparator C and D are in effective status; The positive opening signal of the output end signal of comparator C and this plate with after signal send by control line, what the Enable Pin of output termination the other side plate counter of comparator D, the output of comparator D and the pressure of this plate were turn-offed order connects the interface chip control end of this plate with signal; When Counter Value greater than the c value, the output step-down level of comparator C, the signal of then giving control line is a low level; If Counter Value is greater than the d value, the output step-down level of comparator D, the interface chip control end step-down level of this plate, interface chip output is opened; The counter Enable Pin neutralizes, and counter stops counting.
Wherein, a, b, c, d are 4 numerical value in the rolling counters forward scope, and satisfy a＜b＜c＜d.
Under the default setting, the positive opening signal of this plate is a high level, and the pressure of this plate is turn-offed order and is high level.
Below in conjunction with drawings and Examples the present invention is described in detail.
Fig. 1 is the schematic diagram that counter is connected with comparator on the veneer of the irrevocable formula backup protection of realization of the present invention.
The present invention proposes a kind of veneer of realizing irrevocable formula backup protection.In actual applications, veneer of the present invention generally is to use in pairs, promptly constitutes the veneer of backup mutually.Be inserted in when working on the frame, have two work nest positions selective on the frame when veneer inserts, be respectively the major trough position and be equipped with the groove position, the veneer that is inserted on the major trough position is called main board, and the veneer that is inserted on the groove position fully is called standby plate.As shown in Figure 1, its expression be the annexation of counter and comparator on the veneer, the Enable Pin of " ena " expression counter among the figure, the clear terminal of " clr " expression counter, the output of " q " expression counter.What the counter among the present invention adopted is from summary counter.
Several typical operating state with regard to veneer is that example illustrates the device that the present invention proposes below:
First kind of state, two veneers power on simultaneously.
In this case, the counter of two veneers begins counting simultaneously, and when count value arrived a, main board output control signal was given standby plate, makes the counter O reset of standby plate.When the counter of main board continues to count down to b, open output, the control line zero clearing always brought by main board of the counter of standby plate at this moment can't count down to c and d, is in off state always.Because the numerical value of comparator satisfies a＜b＜c＜d, main board can arrive the counting effective value prior to standby plate, so when two boards powers on simultaneously, always be fixed on main board work.
Second kind of state, main board is extracted.At this moment, because the control signal that main board is brought becomes the default setting high level, so the clear terminal of standby plate counter becomes high level again, the standby plate counter begins counting.When count value reaches c, the output step-down level of comparator C, it is sent to the control signal of main board also step-down level; When count value reaches d, the output step-down level of comparator D, the interface chip control end step-down level of standby plate is opened the output of standby plate.
After standby plate enters work; even main board inserts again; the control signal that standby plate is given main board is a low level; make the counter of main board be in cleared condition; like this; the insertion of the veneer in back neither can be exported also and can not given the other side's plate effective control signal, so can not influence the state of the veneer of working, the irrevocable formula protection of realization that can be successful.
The third state carries out Forced Switch.
The output of this plate positive opening signal and comparator A or C with after, give the other side plate by control line.So when making Forced Switch, the inoperative plate receives the positive opening order, directly do not open the output of this plate, but low level is put in the positive opening order, make the control signal step-down level of giving working plate, make the working plate counter O reset, thereby turn-off working plate output, and the control signal that makes working plate give this plate becomes invalid high level again.At this moment this plate counter begins counting, and after arriving predetermined count value b or d, the output step-down level of comparator B or D makes the interface chip control end step-down level of this plate, and this plate begins output.So this mode can not cause the instantaneous phenomenon of output simultaneously of two boards.
From above three typical operating states; as can be seen; the veneer of the irrevocable formula backup protection of realization that the present invention proposes can be finished the irrevocable formula defencive function between the veneer of mutual backup reliably, and the insertion of any veneer can not exerted an influence to the system of working.And, export the phenomenon that causes interface chip to damage in the time of moment because of two boards when having avoided switching owing to adopted the output of first shutoff the other side plate to open the mode of this plate output again.
Claims (2)
1, realize the veneer of irrevocable formula backup protection, it is characterized in that:
Veneer is provided with a counter, and described counter connects four comparator A-D; Described veneer receives the notification signal and the control signal of present the other side's plate state of living in that the other side's plate sends by control line, and under default setting, described control line is in high level;
The pressure that the clear terminal of described counter receives the control signal of described control line and this plate turn-off command signal with after signal, the input end of clock welding system clock of counter, the input of the output termination of counter 4 comparator A, B, C, D; Under default setting, the counter Enable Pin is effective high level; When described Counter Value during greater than a value, described comparator A is output as low level; When described Counter Value during greater than the b value, described comparator B is output as low level; When described Counter Value during greater than the c value, described comparator C is output as low level; When described Counter Value during greater than the d value, described comparator D is output as low level; And satisfy a＜b＜c＜d;
When described veneer inserts the major trough position of frame, the output of comparator A and this plate positive opening signal with after signal export by control line; The Enable Pin of output termination the other side plate counter of comparator B, the output of comparator B and the pressure of this plate turn-off command signal with after deliver to the interface chip control end of this plate; Described veneer insert frame be equipped with the groove position time, the positive opening signal of the output end signal of comparator C and this plate with after signal send by control line; What the Enable Pin of output termination the other side plate counter of comparator D, the output of comparator D and the pressure of this plate were turn-offed order connects the interface chip control end of this plate with signal;
This plate was opened output when the interface chip control end of this plate was low level.
2, veneer as claimed in claim 1 is characterized in that: described counter is from summary counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01105237 CN1128510C (en) | 2001-01-13 | 2001-01-13 | Single board with non-return standby protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01105237 CN1128510C (en) | 2001-01-13 | 2001-01-13 | Single board with non-return standby protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1366386A CN1366386A (en) | 2002-08-28 |
| CN1128510C true CN1128510C (en) | 2003-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01105237 Expired - Lifetime CN1128510C (en) | 2001-01-13 | 2001-01-13 | Single board with non-return standby protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128510C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426743C (en) * | 2005-12-06 | 2008-10-15 | 华为技术有限公司 | Internal reliable interconnect communication device |
| CN105629154B (en) * | 2015-12-25 | 2019-01-25 | 大唐微电子技术有限公司 | A kind of method and device for realizing chip top-layer metal covering circuit test |
-
2001
- 2001-01-13 CN CN 01105237 patent/CN1128510C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1366386A (en) | 2002-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHENG CITY ZTE CO., LTD. Free format text: FORMER OWNER: SHENZHENG CITY ZTE CO., LTD. SHANGHAI SECOND INSTITUTE Effective date: 20010912 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20010912 Address after: 518057, Guangdong province Shenzhen Nanshan District hi tech Industrial Park, science and technology south road, ZTE building A block 6 floor of the legal department Applicant after: Zhongxing Communication Co., Ltd., Shenzhen City Address before: 200233 No. 396, Shanghai, Guilin Road Applicant before: Shanghai Inst. of No.2, Zhongxing Communication Co., Ltd., Shenzhen City |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZTE CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHENZHENG CITY ZTE CO., LTD. |
|
| CP03 | "change of name, title or address" |
Address after: 518057 Department of law, Zhongxing building, South hi tech Industrial Park, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee after: ZTE Corporation Address before: 518057, Guangdong province Shenzhen Nanshan District hi tech Industrial Park, science and technology south road, ZTE building A block 6 floor of the legal department Patentee before: Zhongxing Communication Co., Ltd., Shenzhen City |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20031119 |