CN201796331U - Externally controlled reset circuit of system setting memory - Google Patents
Externally controlled reset circuit of system setting memory Download PDFInfo
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- CN201796331U CN201796331U CN2010201166552U CN201020116655U CN201796331U CN 201796331 U CN201796331 U CN 201796331U CN 2010201166552 U CN2010201166552 U CN 2010201166552U CN 201020116655 U CN201020116655 U CN 201020116655U CN 201796331 U CN201796331 U CN 201796331U
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- default
- electronic switch
- storer
- reset circuit
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Abstract
An externally controlled reset circuit of a system setting memory comprises a reset button, a signal delay unit and an erasing control circuit. The signal delay unit is connected with one end of the reset button, and the erasing control circuit is connected to the reset button by the signal delay unit. When the reset button is pressed, a reset signal of the reset button is delayed for a period of time prior to restarting of the erasing control circuit, and after being started, the erasing control circuit automatically erases system setting parameters stored by the system setting memory. Since the reset button is arranged outside a casing, time for opening a case to find a corresponding jumper to erase the system setting parameters is shortened, and the effects of convenience and speediness are sufficiently realized.
Description
Technical field
This creation relates to computer apparatus, relates in particular to a kind of external control type reset circuit of default reservoir.
Background technology
The required information of system default parameter record computer equipment operation of computer equipment, for example parameter, system time, exploration on display resolution ratio and the power management etc. of the outer frequency of central processing unit, main board memory, described a plurality of system default parameters are stored in the default storer of its mainboard usually.See also Fig. 4, for make described a plurality of system default parameter not the reason system closedown do not existed, the general practice is that described default storer (530) is connected to storer feed circuit (550), and described storer feed circuit (550) connect the direct supply V3 of power supply unit simultaneously or use battery BAT, when power supply unit is stopped power supply, still by the continuous power supply that continues of battery BAT, guarantee that setup parameter do not lose.It is again the setup parameter of resettable described default storer (530), be connected with jumper wire device JCMOS again between described default storer (530) and the storer feed circuit (550), its first branch connecting pin is connected to the output terminal of described storer feed circuit (550), second branch connecting pin then is connected to described default storer (530) power end, and the 3rd branch connecting pin then is connected to electronegative potential; During general normal use, with first and the second branch connecting pin short circuit, make storer feed circuit (550) continue power supply and give described default storer (530), otherwise desire to reset the setup parameter of default storer (530), then instead second branch connecting pin is shorted to the 3rd branch connecting pin, makes default storer (530) be connected to electronegative potential and remove former storing and setting parameter.
Because jumper wire device JCMOS is located on the mainboard equally,, or when computer can't be restarted, need to remove the system default parameter that is stored in storer (530) this moment because of the overclocking action of central processing unit in case the user need be written into preset value again.Therefore must open computer chassis, find jumper wire device JCMOS, again with second and third pin short circuit, scavenge system setup parameter in storer (530) begins.Therefore the quite complicated inconvenience of step need have more easy mode with the scavenge system setup parameter for the user.
The utility model content
In view of this, this creation fundamental purpose provides a kind of external control type reset circuit of default reservoir, allow the user utilize replacement button scavenge system setup parameter fast on the casing, and need not be via opening computer housing and carrying out the complicated procedures of wire jumper.
Desiring to reach the employed major technique means of above-mentioned purpose is to make the external control type reset circuit of described default reservoir comprise replacement button, signal delay unit and remove control circuit; Wherein:
Described replacement button is arranged on outside the computer chassis;
Described signal delay unit is connected to described replacement button, postpones the reset signal that described replacement button transmits;
Described removing control module is connected to described signal delay unit, be connected to described replacement button by described signal delay unit, to obtain the reset signal of described delay, behind the reset signal of receiving described delay, in output terminal output clear signal, wherein said output terminal is for being connected with the power supply supply pin of default storer, and described default memory storage has system default parameter.
This creation utilizes the replacement button of former casing to set the setup parameter of reservoir for user's scavenge system, allow the user needn't take casing apart and can remove its setting, again based on not disturbing the original operating system function of reset of replacement button, so the signal delay unit of this creation is after the replacement button is pressed a period of time, just can trigger described removing control module, by described removing control module the default reservoir is removed, make its function of reset originally still can be of short duration keep and unaffected, reach the dual-purpose advantage of a key by the mode of touching.Hence one can see that, and the use-pattern that this creation provides the user to exempt to start shooting case scavenge system setup parameter effectively shortens time of traditional scavenge system setup parameter, has benefit easily.
Description of drawings
Fig. 1 is a functional block diagram of setting external control type reset circuit first embodiment of reservoir according to this authoring system;
Fig. 2 is a circuit diagram of setting external control type reset circuit second embodiment of reservoir according to this authoring system;
Fig. 3 is the circuit diagram according to described first embodiment of the external control type reset circuit of this authoring system setting reservoir;
Fig. 4 is that known system is set the circuit diagram that reservoir is removed circuit.
Embodiment
See also Fig. 1 and Fig. 3, this authoring system is set first preferred embodiment of the external control type reset circuit of reservoir (130), and it comprises replacement button RST (110), signal delay unit (120) and removes control circuit (140).
Above-mentioned replacement button RST (110) is arranged on outside the computer chassis, is used for execution environment replacement process and remove the system default parameter of described default storer.
Above-mentioned signal delay unit (120) is connected to described replacement button (110), postpones the reset signal that described replacement button (110) transmits.Described signal delay unit (120) comprises first resistance R 1, the first electronic switch S1, second resistance R 2 and the capacitor C; One end of described first resistance R 1 is connected with the first positive voltage V1; The control end of the described first electronic switch S1 links to each other with described replacement button (110), and links to each other one end ground connection with the other end of described first resistance R 1; One end of described second resistance R 2 links to each other with the other end of the described first electronic switch S1, and its other end links to each other with the second positive voltage V2, and the other end of the described first electronic switch S1 then is connected to earth terminal; Described again capacitor C is parallel to two ends of the first electronic switch S1.When described replacement button (110) when not pressing, the control end of the described first electronic switch S1 is connected to the described first positive voltage V1 by first resistance R 1, and enters conducting ground connection; If when described replacement button (110) when pressing, the control end of the described first electronic switch S1 is connected to earth terminal and no longer conducting, this moment, the described second positive voltage V2 charged through 2 pairs of described capacitor C of second resistance R.In addition, capacitor C is full of electricity and must ream weight puts switch (110) maintenance and press a period of time.
Above-mentioned removing control circuit (140) is connected to described signal delay unit (120), and supply the power end of default reservoir (130) to connect, in the present embodiment, described removing control circuit (140) is the second electronic switch S2, the control end of the wherein said second electronic switch S2 is connected with the capacitor C of described signal delay unit (120), one end ground connection, and the other end links to each other with the described power supply supply pin of described default storer (130).Therefore, after described replacement button (110) is pressed a period of time, the capacitor C of described signal delay unit (120) provide high-potential voltage to and the control end of second electronic switch, make the described second electronic switch conducting ground connection, the power end of described default storer this moment (130) i.e. is ground connection together, and reaches the effect of removing setup parameter; Therefore, if capacitor C provides undertension to make the described second electronic switch S2 conducting, then can't set storer (130) by scavenge system.
From the above, when the moment that described replacement button RST (110) presses is not sufficient to trigger to remove control circuit (140) default storer (130) is removed action, and must postpone the setup parameter that a period of time could scavenge system setting storer (130).Therefore, the replacement button (110) on the casing is directly used in this creation, if the user only pushes replacement button (110) and do not continue to push a period of time, then only can restart computer operating system; Remove default storer (130) in the casing as user's desire,, make the capacitor C charging of signal delay unit (120) reach being enough to trigger and remove control circuit (140) and get final product as long as then push replacement button (110).Therefore, this creation directly utilizes replacement button (110) as removing button usefulness, still can keep the function of former replacement button.
Above-mentioned first electronic switch S1 and the described second electronic switch S2 can be transistor, or more specifically, MOSFET; Described default storer (130) can be CMOS RAM.
See also Fig. 2, the external control type reset circuit of described default reservoir also comprises storer feed circuit (150).
Described storer feed circuit (150) include power input V3, button cell BAT and jumper wire device JCMOS.Described power input V3 is an external power source, is connected to first pin of described jumper wire device JCMOS via the first diode D1 and the 3rd resistance R 3; Described button cell BAT is connected to first pin of described jumper wire device JCMOS via the second diode D2 and described the 3rd resistance R 3; Second pin of described jumper wire device JCMOS is connected to the described power supply supply pin of described default storer (130), and the 3rd pin of described jumper wire device JCMOS is connected to electronegative potential; During normal the use, with first and second pin short circuit, make storer feed circuit (150) continue power supply and give described default storer (130), otherwise desire to reset the setup parameter of default storer (130), then instead second pin is shorted to the 3rd pin, makes default storer (130) be connected to electronegative potential and remove former storing and setting parameter.
The script function of replacement button (110) is to supply the user by sentencing the replacement that starts computer system, by be longer than time side's startup expeced time scavenge system setup parameter by the time of touching replacement button (110), makes one key can control two difference in functionalitys.Simultaneously, must open cabinet, find corresponding wire jumper, reach the benefit of a key double-purpose and operation readiness to empty traditional scavenge system setup parameter step of system default parameter via also exempting by the mode of touching replacement button (110) scavenge system setup parameter.
Claims (8)
1. the external control type reset circuit of a default reservoir, it comprises:
The replacement button is arranged on outside the computer chassis;
Signal delay unit is connected to described replacement button, postpones the reset signal that described replacement button transmits;
Remove control module, be connected to described signal delay unit, be connected to described replacement button by described signal delay unit, to obtain the reset signal of described delay, behind the reset signal of receiving described delay, in output terminal output clear signal, wherein said output terminal is connected with the power supply supply pin of default storer, and described default memory storage has system default parameter.
2. external control type reset circuit as claimed in claim 1, wherein
Described replacement button one end is connected to earth terminal; And
Described signal delay unit comprises:
First resistance, the one end is connected with first positive voltage;
First electronic switch, its control end links to each other with the described replacement button other end, and second end is connected to earth terminal, and link to each other with the other end of described first resistance; The control end of wherein said first electronic switch is connected to earth terminal by replacement button selectivity;
Second resistance, the one end links to each other with first end of described first electronic switch, and its other end links to each other with second positive voltage; And
Electric capacity, it is parallel to first and second end of first electronic switch; Wherein when the first electronic switch conducting, described second positive voltage charges to described electric capacity by second resistance.
3. external control type reset circuit as claimed in claim 2, wherein said removing control module is second electronic switch, the control end of described second electronic switch is connected with the described capacitor C of described signal delay unit, one end ground connection, and the other end links to each other with the described power supply supply pin of described default storer.
4. external control type reset circuit as claimed in claim 3 also comprises the storer feed circuit, and described storer feed circuit comprise:
Jumper wire device, it includes first pin, be connected in second pin of described power supply supply pin of described default storer and the 3rd pin of ground connection, the wherein said second pin selectivity and described first pin and the connection of described the 3rd pin;
Battery is connected in described first pin; And
External dc power is connected in described first pin.
5. as each described external control type reset circuit in claim 3 or 4, wherein said first electronic switch and described second electronic switch are transistors.
6. external control type reset circuit as claimed in claim 5, wherein said transistor are MOSFET.
7. external control type reset circuit as claimed in claim 5, wherein said default storer is CMOS RAM.
8. external control type reset circuit as claimed in claim 6, wherein said default storer is CMOS RAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201166552U CN201796331U (en) | 2010-02-04 | 2010-02-04 | Externally controlled reset circuit of system setting memory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201166552U CN201796331U (en) | 2010-02-04 | 2010-02-04 | Externally controlled reset circuit of system setting memory |
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| Publication Number | Publication Date |
|---|---|
| CN201796331U true CN201796331U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201166552U Expired - Fee Related CN201796331U (en) | 2010-02-04 | 2010-02-04 | Externally controlled reset circuit of system setting memory |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164007A (en) * | 2011-12-09 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Password clearing circuit |
| CN104908644A (en) * | 2015-05-26 | 2015-09-16 | 北京智视信息科技有限公司 | Monitoring method for remote vehicle networking vehicles |
| CN110069211A (en) * | 2018-01-23 | 2019-07-30 | 纬创资通股份有限公司 | Data management circuit |
| CN114089714A (en) * | 2020-08-24 | 2022-02-25 | 和硕联合科技股份有限公司 | Portable electronic device |
-
2010
- 2010-02-04 CN CN2010201166552U patent/CN201796331U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164007A (en) * | 2011-12-09 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Password clearing circuit |
| CN104908644A (en) * | 2015-05-26 | 2015-09-16 | 北京智视信息科技有限公司 | Monitoring method for remote vehicle networking vehicles |
| CN110069211A (en) * | 2018-01-23 | 2019-07-30 | 纬创资通股份有限公司 | Data management circuit |
| CN110069211B (en) * | 2018-01-23 | 2022-07-29 | 纬创资通股份有限公司 | Data management circuit |
| CN114089714A (en) * | 2020-08-24 | 2022-02-25 | 和硕联合科技股份有限公司 | Portable electronic device |
| CN114089714B (en) * | 2020-08-24 | 2023-11-14 | 和硕联合科技股份有限公司 | portable electronic device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |