CN101593048A - A kind of implementation method of spin - Google Patents
A kind of implementation method of spin Download PDFInfo
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- CN101593048A CN101593048A CNA2008101001862A CN200810100186A CN101593048A CN 101593048 A CN101593048 A CN 101593048A CN A2008101001862 A CNA2008101001862 A CN A2008101001862A CN 200810100186 A CN200810100186 A CN 200810100186A CN 101593048 A CN101593048 A CN 101593048A
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Abstract
The invention discloses a kind of implementation method of spin, this method comprises: after the last time general input/output interface GPIO value that will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed; Level according to described GPIO changes the direction of operating of judging this spin.Adopt the present invention on the basis of compatible existing hardware structure, can avoid false triggering, overcome the harmful effect that false triggering brings.
Description
Technical field
The present invention relates to the realization technology of spin, relate in particular to frequent and implementation method spin in the incident field that rule is few of a kind of built-in field and false triggering incident.
Background technology
Though spin is emerging product in embedded consumption electronic product, it is flexible and convenient to use fast, takes into account the two-fold advantage of mouse-keyboard, just more and more is subjected to user's favor.Spin is made up of big ball Ball and four bead Roller, in fact our spin of rolling at ordinary times is exactly at rolling Ball so, the Roller that drives when Ball rolls on its direction rolls, and the rolling of Roller can trigger its corresponding Hall element generation pulse by general input/output interface GPIO, thereby can produce respective change in the register of relevant spin.Here, the register of relevant spin, such as the GPIO register-bit in the spin controller.
Connection diagram between existing spin, spin controller and the CPU as shown in Figure 1 and Figure 2.All comprise CPU1, spin controller 2 and spin 3 among Fig. 1, Fig. 2, the signal that spin passes to the spin controller all is that status signal is UP/DOWN/LEFT/RIGHT.The difference of Fig. 1 and Fig. 2 mainly is: the spin controller 2 of Fig. 1 is positioned at CPU1.That is to say that Fig. 1 is the situation that CPU supports the spin device, Fig. 2 is that CPU does not support the spin device, can only reach the situation that the spin device is supported by the outside expansion.With annexation shown in Figure 2 is example, and specifically, CPU1 provides clock signal to spin controller 2; CPU1 provides control signal to spin controller 2, is used to open the spin controller; Spin controller 2 provides look-at-me to CPU1, and after CPU1 receives this look-at-me, can call corresponding Interrupt Process function and remove to read the GPIO level that spin controller 2 transmits and change.Here, to change be to cause that the GPIO level that the Hall element induction produces changes because ball moves to the GPIO level that transmits of this spin controller 2.In addition, spin controller 2 is also to the input/output signal of CPU1 feedback user.Here, the status signal that only exists spin to roll between spin 3 and the spin controller 2 to be produced, this status signal are actually Hall element and produce pulse feedback and give spin controller 2.
Because spin in use; the pulse that triggers Hall element generation UP/DOWN/LEFT/RIGHT direction except meeting feeds back to the spin controller as status signal; also often can unexpected touch the Hall element of other direction, thereby the waveform that triggers on other direction of spin forms false triggering.At present also can't be with the pulse elimination of false triggering from the angle of considering the improvement hardware configuration, thereby can't solve the harmful effect that false triggering brings, such as the original spin of operation downwards, the result is because the false triggering waveform of other direction, feasible generation left or to the right, even the pulse that makes progress.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of implementation method of spin, can avoid false triggering on the basis of compatible existing hardware structure, overcomes the harmful effect that false triggering brings.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of implementation method of spin, this method comprises: after the last time general input/output interface GPIO value that will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed; Level according to described GPIO changes the direction of operating of judging this spin.
Wherein, the described last time GPIO value that will read and this GPIO value are carried out xor operation and are specially: directly read the GPIO level value, with last time the level value of GPIO and the level value of this GPIO carried out xor operation.
Wherein, described method further comprises: adopt from the counter register of spin and read out direction and the big or small mode that spin is rolled, revise the direction of operating of described spin.
Wherein, the direction of operating of described correction spin further comprises: the level of 5 GPIO of statistics changes the key assignments that sends spin, determines that the key assignments of described spin is: the level that occurs GPIO during the level of described 5 GPIO changes changes the key assignments of the maximum direction of probability.
Wherein, the direction of operating of described correction spin further comprises: if meet level change frequency＞2 of GPIO and the pulse width＞reference point of described GPIO level during the level of described GPIO changes; And the level of this described GPIO to change with the GPIO that last time sent the spin direction be same GPIO and the consistent condition of direction, then the rotating direction of the rotating direction of definite this spin and spin last time is consistent.
Wherein, the direction of operating of described correction spin further comprises: if meet spin maximal value＞1; And the value of pulsewidth＞reference point and the previous transmission condition identical with this value, determine that then the rotating direction of the rotating direction of this spin and spin last time is consistent.
Wherein, the direction of operating of described correction spin further comprises: if meet level change frequency＞2 of GPIO; And preceding two transmissions is with value and the condition identical with this value, and then the rotating direction of the rotating direction of definite this spin and spin last time is consistent.
Wherein, the direction of operating of described correction spin further comprises: if the 3s timer expiry after then determining to receive, is jumped out and received circulation.
Owing to spin false triggering when operating is frequent, and rule is not obvious, therefore at present also can't be with the pulse elimination of false triggering formation from the angle of considering the improvement hardware configuration.The present invention solves false triggering from the angle that software algorithm realizes.Specifically, after the last time general input/output interface GPIO value that the present invention will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed; Level according to this GPIO changes the direction of operating of judging this spin.Adopt the present invention on the basis of compatible existing hardware structure, can avoid false triggering, overcome the harmful effect that false triggering brings.
And then the mode that adopts the rudimentary algorithm of realizing the spin function and the optimized Algorithm that solves the spin false triggering to mix is mutually avoided false triggering.Adopt the present invention on the basis of realizing spin function rudimentary algorithm, further optimize the realization of spin, avoid false triggering better.And the present invention also adopts the rudimentary algorithm of realizing the spin function, and solves the mode that the optimized Algorithm of spin sensitivity, accuracy and response speed is mixed mutually, improves sensitivity, accuracy and the response speed of spin.Employing the invention solves the response speed of spin and the contradiction of sensitivity and accuracy, can realize that spin responds fast, accurately and stably rolls.In addition, adopt the rudimentary algorithm of realizing the spin function, solve the optimized Algorithm of spin false triggering, and the optimized Algorithm that solves spin sensitivity, accuracy and the response speed mode of mixing mutually, not only can avoid false triggering, but also can solve the response speed of spin and the contradiction of sensitivity and accuracy, realize that spin responds fast, accurately and stably rolls.
Description of drawings
Fig. 1 is the connection diagram between existing spin, spin controller and the CPU;
Fig. 2 is another connection diagram between existing spin, spin controller and the CPU;
The schematic flow sheet that Fig. 3 realizes for the principle of the invention.
Embodiment
Core concept of the present invention is: after the last time general input/output interface GPIO value that the present invention will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed; Level according to this GPIO changes the direction of operating of judging this spin.Adopt the present invention on the basis of compatible existing hardware and structure, can avoid false triggering, overcome the harmful effect that false triggering brings.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
As shown in Figure 3, a kind of implementation method of spin, this method may further comprise the steps:
After step 101, the last time GPIO value that will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed.
Step 102, change the direction of operating of judging this spin according to the level of this GPIO.
Here,, further comprise in the above-mentioned steps 102: adopt from the counter register of spin and read out direction and the big or small mode that spin is rolled, revise the direction of operating of described spin in order to obtain better effect.Make in this way and revise, can be so that the direction of operating of spin reduces the part mistake.
Wherein, in the above-mentioned steps 101, when hardware configuration adopts being connected between as shown in Figure 2 spin, spin controller and the CPU, the described last time GPIO value that will read and this GPIO value are carried out xor operation and are specially: directly read the GPIO level value, with last time the level value of GPIO and the level value of this GPIO carried out xor operation.Thereby the level of GPIO changes in obtaining during this period of time according to this xor operation, can judge the direction of operating of this spin.
Here, the implementation method that it is pointed out that spin described above all is to realize the rudimentary algorithm of spin function.Below the optimized Algorithm that realizes the spin function is set forth.
Optimized Algorithm one is: the optimized Algorithm that solves the spin false triggering.Because false triggering is frequent when operation, rule is not obvious for spin, also can't address this problem from the angle of considering hardware configuration, the present invention solves false triggering from the angle that software algorithm realizes, and statistical algorithms is adopted in the realization of software algorithm.Through checking, adopt this optimized Algorithm, the level of promptly adding up 5 GPIO changes the key assignments that sends a spin, and the key assignments of definite spin that is sent is: during the level of described 5 GPIO changed, the level that GPIO occurs changed the key assignments of that direction of probability maximum.So, adopt the rudimentary algorithm of above-mentioned realization spin function, and solve the mode that the optimized Algorithm of spin false triggering is mixed mutually, on the basis of realizing spin function rudimentary algorithm, further optimize the realization of spin, avoid false triggering better.
Optimized Algorithm two is: the optimized Algorithm that solves spin sensitivity, accuracy and response speed.Adopt this optimized Algorithm, if promptly meet GPIO level change frequency＞2 and during the level of this GPIO changes the pulse width＞reference point of this GPIO level, such as 8ms; And the level of this this GPIO to change with that GPIO that last time sent the spin direction be same GPIO and the consistent condition of direction, then the rotating direction of the rotating direction of definite this spin and spin last time is consistent.Can allow this moment receive the minimizing of spin rolling number of times, thereby increase the sensitivity and the speed of spin.That is to say, adopt to realize the rudimentary algorithm of spin function, and solve the mode that the optimized Algorithm of spin sensitivity, accuracy and response speed is mixed mutually, can improve sensitivity, accuracy and the response speed of spin.
Optimized Algorithm three is: also be the optimized Algorithm that solves spin sensitivity, accuracy and response speed.Adopt this optimized Algorithm, if promptly meet spin maximal value＞1; And the value of pulsewidth＞reference point and the previous transmission condition identical with this value, determine that then the rotating direction of the rotating direction of this spin and spin last time is consistent.Can allow this moment receive the minimizing of spin rolling number of times, thereby increase the sensitivity and the speed of spin.That is to say, adopt to realize the rudimentary algorithm of spin function, and solve the mode that the optimized Algorithm of spin sensitivity, accuracy and response speed is mixed mutually, can improve sensitivity, accuracy and the response speed of spin.
Optimized Algorithm four is: also be the optimized Algorithm that solves spin sensitivity, accuracy and response speed.Adopt this optimized Algorithm, if promptly meet level change frequency＞2 of GPIO; And preceding two transmissions is with value and the condition identical with this value, and the same value of what is called refers to that the key assignments of spin is identical here, determines that then the rotating direction of the rotating direction of this spin and spin last time is consistent.Can allow this moment receive the minimizing of spin rolling number of times, thereby increase the sensitivity and the speed of spin.That is to say, adopt to realize the rudimentary algorithm of spin function, and solve the mode that the optimized Algorithm of spin sensitivity, accuracy and response speed is mixed mutually, can improve sensitivity, accuracy and the response speed of spin.
Optimized Algorithm five is: also be the optimized Algorithm that solves spin sensitivity, accuracy and response speed.Adopt this optimized Algorithm, if i.e. 3s timer expiry after then determining to receive, is jumped out and received circulation.Like this, can increase the speed of spin, on the transmission condition of spin, be limited the accuracy that can guarantee spin simultaneously.That is to say, adopt to realize the rudimentary algorithm of spin function, and solve the mode that the optimized Algorithm of spin sensitivity, accuracy and response speed is mixed mutually, can improve sensitivity, accuracy and the response speed of spin.
Here, it is to be noted, the rudimentary algorithm of spin function will be realized, solve the optimized Algorithm of spin false triggering, and mix mutually with at least one algorithm in the optimized Algorithm of the sensitivity of above-mentioned solution spin, accuracy and response speed, not only can avoid false triggering, but also can solve the response speed of spin and the contradiction of sensitivity and accuracy, realize that spin responds fast, accurately and stably rolls.For instance, can will realize the rudimentary algorithm of spin function, optimized Algorithm one is mixed with the optimized Algorithm two-phase; To realize the rudimentary algorithm of spin function, optimized Algorithm one is mixed with the optimized Algorithm three-phase; To realize the rudimentary algorithm of spin function, optimized Algorithm one is mixed mutually with optimized Algorithm four; To realize the rudimentary algorithm of spin function, optimized Algorithm one is mixed mutually with optimized Algorithm five; To realize the rudimentary algorithm of spin function, optimized Algorithm one, optimized Algorithm two is mixed with the optimized Algorithm three-phase; To realize the rudimentary algorithm of spin function, optimized Algorithm one, optimized Algorithm two, optimized Algorithm three is mixed mutually with optimized Algorithm four; To realize the rudimentary algorithm of spin function, optimized Algorithm one, optimized Algorithm two, optimized Algorithm three, optimized Algorithm four is mixed mutually with optimized Algorithm five.
Method embodiment: do not changing on the existing hardware connection basis, adopt the rudimentary algorithm of realization spin function and the mode that optimized Algorithm one, optimized Algorithm two, optimized Algorithm three, optimized Algorithm four and optimized Algorithm five are mixed mutually, overcome the phenomenon that false triggering is frequent and rule is few, thereby realize quick, accurate, the stable rolling of spin.Above-mentioned optimized Algorithm is embodied in the spin reception and jumps out in the algorithm.Specifically, optimized Algorithm one corresponding spin receives and jumps out algorithm 1.; 2. optimized Algorithm two corresponding spin receive jumps out algorithm; 3. optimized Algorithm three corresponding spin receive jumps out algorithm; 4. optimized Algorithm four corresponding spin receive jumps out algorithm; 5. optimized Algorithm five corresponding spin receive jumps out algorithm.Below the concrete treatment scheme of present embodiment is set forth.
Here, at the initialization of spin, the initialization flow process of spin may further comprise the steps:
Step 201, the GPIO that pre-defined spin is relevant, and the relevant control configuration that sets in advance the spin controller; CPU is provided with the interruption of opening of spin GPIO.
Whether the spin interrupt function is registered in step 202, judgement successful, if success, then execution in step 203; Otherwise, finish the initialization flow process of current spin.
Step 203, give the spin allocation space, judge and distribute the whether success of spin event structure body space, if success, then execution in step 204; Otherwise, finish the initialization flow process of current spin.
(completion) incident is finished in step 204, establishment and initialization, synchronously the spin signal.
The kernel thread of step 205, establishment spin judges whether establishment spin kernel thread is successful, if success, then execution in step 206; Otherwise, finish the initialization flow process of current spin.
Step 206, wait completion synchronizing signal; Finish the initialization flow process of current spin.
Here, Interrupt Process at spin, the Interrupt Process flow process of spin comprises step: when look-at-me is come, check and judge whether to be the spin look-at-me, if, signal then for the spin thread, carry out follow-up spin thread process flow process, otherwise do not carry out follow-up spin thread process flow process.
Here, at the spin thread process, the spin thread process comprises the thread initialization, the spin handling procedure that is made of endless loop and the processing of withdrawing from thread.The spin thread process may further comprise the steps so:
Step 301, initialization timing device and semaphore.
Here, timer make spin can not long-play in endless loop, just jump out after the time arriving certain predetermined.With the 10ms timer is example, and spin is just jumped out after reaching 10ms.Semaphore is used to receive the signal of sending by interrupting.
The user's space of step 302, release spin thread makes this thread to run in the kernel spacing.
Step 303, reinitialize the thread space.
The signal mask lock of step 304, locking current task.
Signal (SIGKILL) unblock is killed in step 305, setting, recomputates the number of signals of suspension.
Two operations here all need the signal lock locking.
Step 306, wake the wait thread of spin up.
Step 307, enter the spin handling procedure that constitutes by endless loop.
Step 308, after receiving the SIGKILL signal, withdraw from the processing of thread.And when withdrawing from, module discharges thread at the shared memory headroom of kernel.
Here, specifically, the processing of withdrawing from thread is: deletion 10ms timer, it is synchronous to withdraw from completion.Thereby finish the flow process of current spin thread process.
Here it is pointed out that the above-mentioned flow process that is made of step 301～step 306 is the initialized flow process of thread.Above-mentioned steps 307 is the endless loop of spin and handles, and this is after thread starts initialization, the place that spin is handled.
Here, handle at the endless loop of spin, the endless loop treatment scheme of spin may further comprise the steps:
Step 401, enable spin and interrupt, to the 10ms regularly of initialized 10ms timer in the spin thread process module.
Step 402, wait for to receive the spin signal that the Interrupt Process function is sent, the signal of arriving when receiving the spin signal hangs in the formation and reads, and judges whether to remain processing signals in the current task, if i.e. formation is not a sky, then execution in step 403; Otherwise,, then change execution in step 401 over to classifying sky as.
Step 403, shielding spin are interrupted, and 4ms is anti-shake in time-delay, by XOR last time GPIO level and this GPIO level this level of calculating each GPIO change.
Step 404, timing 3s make spin can jump out endless loop after handling certain interruption number, accelerate the speed of spin.
Step 405, time-delay 4ms, as in the step 403 by XOR last time GPIO level and this GPIO level this level of calculating each GPIO change, the level that recomputates each GPIO of spin changes, and each GPIO level of spin changes number and pulsewidth.
Step 406, change reference as the initial level of spin module with 5 statistical values; Obtain spin direction maximal value.
Step 407, the level of judging spin GPIO change and whether to satisfy spin and receive and jump out algorithm, if then execution in step 408; Otherwise, change execution in step 405 over to.
Here, also can be understood as: whether the spin basis meets the spin reception is jumped out algorithm, and deciding is to change the level variation that execution in step 405 continuation receive spin GPIO over to, or other processing operations of spin are down carried out in continuation.
Step 408, judge the level of spin GPIO changes whether to satisfy tilted direction rolling algorithm, if then preserve execution in step 409 behind the tilted direction of spin; Otherwise, direct execution in step 409.
Step 409, the level of judging spin GPIO change and whether to satisfy the spin key assignments and send the condition algorithm, if, then preserve the transmission value direction that last time reached this spin, with the key assignments of spin all directions clear 0, change the key assignments that maximum directions is composed maximum direction, execution in step 410 for the level of spin GPIO; Otherwise, change execution in step 412 over to.
Step 410, judge whether spin time maximum direction exists, if, execution in step 411 after the assignment spin time maximum direction then; Otherwise, direct execution in step 411.
Step 411, send spin rolling key assignments and or the release key assignments of spin, the overtime sign of clear 0 timer 10ms.
Step 412, the current task state is set interrupts, dispatch execution in step 401 behind the overtime 30ms.
Below the algorithm that relates in the endless loop treatment scheme to above-mentioned spin set forth.
Receive at spin and to jump out algorithm, below each selected optimized Algorithm be relation arranged side by side.
1. this circulation is jumped out in the change frequency of the level of GPIO＞=5 o'clock, no longer receives each GPIO level of spin and changes, and changes other operation of carrying out spin into.This is the rudimentary algorithm that the reception of spin is jumped out, and other all are optimized Algorithm on this basis, to solve fast and the contradiction of accuracy, reach sensitive and accurate stable operating result.
2. when spin maximal value=1; And pulsewidth＞reference point; And preceding two transmissions be with value and and this be worth and can jump out this when identical and circulate other operation of execution spin.Spin maximal value=1st wherein in order to accelerate the speed of spin, if all adopt change frequency＞=5 o'clock of the level of GPIO at every turn, jumped out this round-robin condition and can be made that the spin reaction is slow after all.The condition of pulsewidth＞reference point is in order to guarantee the accuracy of spin.And preceding two transmissions is that same value and the condition identical with this value are accuracy and the stability in order to guarantee spin.
3. when spin maximal value＞1; And the value of pulsewidth＞reference point and previous transmission is worth with this and can jumps out this circulation when identical, carries out other operation of spin.Spin maximal value＞1st wherein is in order to accelerate the speed of spin.And the value of pulsewidth＞reference point and previous transmission identical with this value be in order to guarantee the accuracy of spin.
4. level change frequency＞2 of GPIO; And preceding two transmissions be with value and and this be worth and can jump out this when identical and circulate other operation of execution spin.
5. can jump out this circulation when the 3s timer expiry, carry out other operation of spin.This condition is in order to accelerate the speed of spin.
Here, at tilted direction rolling algorithm, below each selected optimized Algorithm also be relation arranged side by side.
1. when spin maximal value＞2; And spin secondly maximal value and spin maximal value differ＜2 and level change frequency＞3 of GPIO o'clock think that the rolling of tilted direction has taken place spin.
2. when spin maximal value=5 and spin secondly maximal value and spin maximal value differ=think that also the rolling of tilted direction has taken place spin 2 the time.
Here, send the condition algorithm at the spin key assignments, below each selected optimized Algorithm also be relation arranged side by side.Be intended to increase accuracy, the stability of spin, and anti-shake when confirming by spin.
1. the change frequency of the level of GPIO＞=5 basic condition that still can send.
2. level change frequency＞2 of GPIO and surpass the regularly condition of 10ms, the 10ms timer in the corresponding spin handling procedure, i.e. step 308.
3. spin maximal value＞1; And the value of pulsewidth＞reference point and the previous transmission condition identical with this value, corresponding spin receives the 3rd step of jumping out algorithm, and promptly spin receives and jumps out algorithm 3..
4. spin maximal value=1; And pulsewidth＞reference point; And preceding two transmissions is with value and the condition identical with this value, and corresponding spin reception is jumped out the 2nd of algorithm and gone on foot, i.e. 2. spin reception jumps out algorithm.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1, a kind of implementation method of spin is characterized in that, this method comprises: after the last time general input/output interface GPIO value that will read and this GPIO value were carried out xor operation, the level that obtains GPIO changed; Level according to described GPIO changes the direction of operating of judging this spin.
2, implementation method according to claim 1, it is characterized in that, the described last time GPIO value that will read and this GPIO value are carried out xor operation and are specially: directly read the GPIO level value, with last time the level value of GPIO and the level value of this GPIO carried out xor operation.
3, implementation method according to claim 1 and 2 is characterized in that, described method further comprises: adopt from the counter register of spin and read out direction and the big or small mode that spin is rolled, revise the direction of operating of described spin.
4, implementation method according to claim 3, it is characterized in that, the direction of operating of described correction spin further comprises: the level of 5 GPIO of statistics changes the key assignments that sends spin, determines that the key assignments of described spin is: the level that occurs GPIO during the level of described 5 GPIO changes changes the key assignments of the maximum direction of probability.
5, implementation method according to claim 3, it is characterized in that the direction of operating of described correction spin further comprises: if meet level change frequency＞2 of GPIO and the pulse width＞reference point of described GPIO level during the level of described GPIO changes; And the level of this described GPIO to change with the GPIO that last time sent the spin direction be same GPIO and the consistent condition of direction, then the rotating direction of the rotating direction of definite this spin and spin last time is consistent.
6, implementation method according to claim 3 is characterized in that, the direction of operating of described correction spin further comprises: if meet spin maximal value＞1; And the value of pulsewidth＞reference point and the previous transmission condition identical with this value, determine that then the rotating direction of the rotating direction of this spin and spin last time is consistent.
7, implementation method according to claim 3 is characterized in that, the direction of operating of described correction spin further comprises: if meet level change frequency＞2 of GPIO; And preceding two transmissions is with value and the condition identical with this value, and then the rotating direction of the rotating direction of definite this spin and spin last time is consistent.
8, implementation method according to claim 3 is characterized in that, the direction of operating of described correction spin further comprises: if the 3s timer expiry after then determining to receive, is jumped out and received circulation.
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| CN101593049B (en) * | 2008-05-28 | 2012-02-29 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
| CN101593046B (en) * | 2008-05-28 | 2012-09-05 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
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| CN1449168A (en) * | 2003-05-08 | 2003-10-15 | 尹启凤 | Single line serial interface protocol |
| CN101178628B (en) * | 2006-12-08 | 2010-06-09 | 杭州电子科技大学 | Wireless perception mouse control method |
| CN100511114C (en) * | 2007-09-29 | 2009-07-08 | 凌阳创新科技股份有限公司 | Slant type idler wheel mouse circuit |
| CN101593046B (en) * | 2008-05-28 | 2012-09-05 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
| CN101593047B (en) * | 2008-05-28 | 2012-02-22 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
| CN101593049B (en) * | 2008-05-28 | 2012-02-29 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
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| CN101593049B (en) * | 2008-05-28 | 2012-02-29 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
| CN101593046B (en) * | 2008-05-28 | 2012-09-05 | 中兴通讯股份有限公司 | Realizing method of scroll ball |
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