CN101562757B - Digital TV test signal generator and method and device for driving flying shuttle rotary wheel thereof - Google Patents
Digital TV test signal generator and method and device for driving flying shuttle rotary wheel thereof Download PDFInfo
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- CN101562757B CN101562757B CN2009100851489A CN200910085148A CN101562757B CN 101562757 B CN101562757 B CN 101562757B CN 2009100851489 A CN2009100851489 A CN 2009100851489A CN 200910085148 A CN200910085148 A CN 200910085148A CN 101562757 B CN101562757 B CN 101562757B
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Abstract
The invention provides a digital TV test signal generator and a method and a device for driving a flying shuttle rotary wheel thereof. The method comprises the following steps: initializing a clock counting device for filtering, and counting; initializing a device for marking a rotation direction of the flying shuttle rotary wheel and a device for counting a rotation number of the flying shuttle rotary wheel; interrupting a response of the flying shuttle rotary wheel; when the clock counting device for filtering is smaller than a set value, re-initializing the clock counting device for filtering, and stopping the flying shuttle rotary wheel and returning; and when the clock counting device for filtering is greater than a set value, acquiring a characterization value of the device for marking the rotation direction of the flying shuttle rotary wheel and a counting value of the device for counting the rotation number of the flying shuttle rotary wheel, re-initializing the clock counting device for filtering, and stopping the flying shuttle rotary wheel and returning. Therefore, a method for using the flying shuttle rotary wheel of the digital TV test signal generator, which has the advantages of accurate response and stability, is provided.
Description
Technical field
The present invention relates to the Digital Television technical field of measurement and test, particularly relate to the driving method and the device of a kind of digital TV test signal generator and flying shuttle rotary wheel thereof.
Background technology
In the Digital Television test macro, when under adopting no operating system, writing the driver of flying shuttle rotary wheel,, want in the Digital Television test macro, to realize complicated more function owing to can only realize simple function, can not finish.Therefore adopt the driver of writing flying shuttle rotary wheel under the situation that operating system is arranged in the time of most.
Write the flying shuttle rotary wheel program that drives under the operating system having, in ARM, use the driver of flying shuttle rotary wheel, the general employing write under LINUX operating system, whether the method that adopts regularly inquiry or interrupt is inquired about flying shuttle rotary wheel action, and this moment regularly inquires about according to it for the action situation of inquiry flying shuttle rotary wheel or the rank of interrupting is decided, if interrupt levels was provided with low, then in system work process, it is poor to cause the driving real-time of flying shuttle rotary wheel, when flying shuttle rotary wheel is rotating, system is in the high program of executive level, then have the situation generation that flying shuttle rotary wheel throws switch, make the user change same spacing, the scale of demonstration is different, makes system inadequately accurately with stable; And when flying shuttle rotary wheel rotate to produce disturbed, for example shake etc. also can make ARM produce corresponding action, and the scale of demonstration is increased, and promptly produces the situations of changeing more, made system inadequately accurately and stable equally.
Summary of the invention
At the defective of above-mentioned prior art, the purpose of this invention is to provide a kind of response accurate and stable digital TV test signal generator and flying shuttle rotary wheel driving method and device of making.
For achieving the above object, the present invention adopts following technical scheme:
A kind of flying shuttle rotary wheel driving method of digital TV test signal generator may further comprise the steps:
Filtering is also counted with the initialization of clock counting device;
Flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device are carried out initialization;
Flying shuttle rotary wheel interrupt response;
Use the clock counting device less than set point when filtering, filtering is reinitialized with the clock counting device, flying shuttle rotary wheel interrupts returning;
Use the clock counting device more than or equal to set point when filtering, obtain the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device of flying shuttle rotary wheel rotation direction device for marking, filtering is reinitialized with the clock counting device, flying shuttle rotary wheel interrupts returning.
The flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention, wherein said flying shuttle rotary wheel rotation direction device for marking is one, the characterization value of described flying shuttle rotary wheel rotation direction device changes according to the rotation direction of described flying shuttle rotary wheel.
The flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention, wherein said flying shuttle rotary wheel have an output that triggers described flying shuttle rotary wheel interrupt response.
The flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention, the count value of wherein said number of revolutions counting device increases or reduces according to the characterization value of flying shuttle rotary wheel rotation direction device for marking.
The flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention, wherein said filtering is 24000 with the set point of clock counting device.
A kind of flying shuttle rotary wheel drive unit of digital TV test signal generator comprises processing unit, filtering clock counting device, flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device;
Described filtering is used for certain hour is counted with the clock counting device;
Described flying shuttle rotary wheel rotation direction device for marking is used to receive the signal that flying shuttle rotary wheel transmits, and the rotation direction of flying shuttle rotary wheel is changed to characterization value;
Described flying shuttle rotary wheel number of revolutions counting device is used for the number of revolutions of flying shuttle rotary wheel is counted;
Described processing unit is used for described filtering is carried out initialization with clock counting device, described flying shuttle rotary wheel rotation direction device for marking and described flying shuttle rotary wheel number of revolutions counting device, and flying shuttle rotary wheel interrupted responding, judge that filtering is with clock counting device counting during whether less than set point, when the clock counting device is used in filtering less than set point, filtering is reinitialized with the clock counting device, and carry out the flying shuttle rotary wheel interruption and return; Filtering more than or equal to set point, is obtained the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device of flying shuttle rotary wheel rotation direction device for marking with the clock counting device, and filtering is reinitialized with the clock counting device, and flying shuttle rotary wheel interrupts returning.
The flying shuttle rotary wheel drive unit of digital TV test signal generator of the present invention, wherein said flying shuttle rotary wheel rotation direction device for marking is one, the characterization value of flying shuttle rotary wheel rotation direction device changes according to the rotation direction of described flying shuttle rotary wheel, and the count value of described number of revolutions counting device increases or reduces according to the characterization value of flying shuttle rotary wheel rotation direction device for marking.
A kind of digital TV test signal generator comprises display operating device and output device;
Described display operating device is used to change the rotation situation of flying shuttle rotary wheel and the rotation situation that shows flying shuttle rotary wheel;
Described output device is used for test signal is sent to Devices to test;
Also comprise the flying shuttle rotary wheel drive unit;
Described flying shuttle rotary wheel drive unit is used for filtering is carried out initialization with the initialization of clock counting device, flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device, flying shuttle rotary wheel is interrupted responding, read the flying shuttle rotary wheel rotation situation that described display operating device is sent, change the position of rule and the numerical value of the sign flying shuttle rotary wheel rotation situation on the described display operating device according to described rotation situation, and the test signal that sends after flying shuttle rotary wheel driven sends to described output device.
Digital TV test signal generator of the present invention, wherein said flying shuttle rotary wheel drive unit adopts the ARM9 chip, and model is S3C2440A.
Digital TV test signal generator of the present invention, wherein said display operating device comprises LCD, keyboard and flying shuttle rotary wheel.
By adopting filtering clock counting device, can make interruption in the last certain hour of having no progeny in once, can not enter into interrupt response once more, be considered to disturb less than the interrupt response of filtering with the time of clock counting device setting, for example shake etc., the interrupt response that it produces is faster than artificial continuous action, then will not move as the rotation of flying shuttle rotary wheel and count, only more than or equal to this time, then be considered to artificial continuous action, promptly this action can be counted as the rotation of flying shuttle rotary wheel, thereby guaranteed not take place the situations of changeing more; And by to high level response, guaranteed that flying shuttle rotary wheel one produces action, just produced the value of corresponding direction and number of times, thereby guaranteed situation about not throwing switch interrupting; Make the driving method of flying shuttle rotary wheel and drive unit more accurately and stable, and make the rotation situation of the real flying shuttle rotary wheel that whole digital TV test signal generator is more accurate and stable.
Description of drawings
Fig. 1 is the flow chart of the flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention;
Fig. 2 is the block diagram of drive unit of the flying shuttle rotary wheel of digital TV test signal generator of the present invention;
Fig. 3 is the system block diagram of digital TV test signal generator of the present invention;
Fig. 4 is the output schematic diagram of digital TV test signal generator flying shuttle rotary wheel of the present invention.
Embodiment
Be elaborated below in conjunction with the execution mode of accompanying drawing to the flying shuttle rotary wheel driving method of digital TV test signal generator of the present invention.
Referring to Fig. 1, a kind of flying shuttle rotary wheel driving method of digital TV test signal generator may further comprise the steps:
Step S101 also counts with the initialization of clock counting device flying shuttle rotary wheel filtering;
Step S102 carries out initialization to flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device;
Step S103 enters flying shuttle rotary wheel interrupt response;
Whether step S104 judges filtering usefulness clock counting device less than set point, otherwise execution in step S109
Step S105 judges whether the output that flying shuttle rotary wheel does not trigger interrupt response is high level, otherwise execution in step S107;
Step S106 is changed to positive direction with the characterization value of flying shuttle rotary wheel rotation direction device for marking, and the count value of flying shuttle rotary wheel number of revolutions counting device adds 1;
Step S107 is changed to negative direction with the characterization value of flying shuttle rotary wheel rotation direction device for marking, and the count value of flying shuttle rotary wheel number of revolutions counting device subtracts 1;
Step S108 obtains the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device of flying shuttle rotary wheel rotation direction device for marking;
Step S109 reinitializes with the clock counting device filtering, and flying shuttle rotary wheel interrupts returning.
Wherein filtering is 24000 with clock counting device set point.
Referring to Fig. 2, a kind of flying shuttle rotary wheel drive unit of digital TV test signal generator comprises processing unit 201, filtering clock counting device 202, flying shuttle rotary wheel rotation direction device for marking 203 and flying shuttle rotary wheel number of revolutions counting device 204;
Processing unit 201 is used for filtering is carried out initialization with clock counting device 202, flying shuttle rotary wheel rotation direction device for marking 203 and flying shuttle rotary wheel number of revolutions counting device 204, and flying shuttle rotary wheel interrupted responding, judge that filtering is with clock counting device 202 countings during whether less than set point, when clock counting device 202 is used in filtering less than set point, filtering is reinitialized with clock counting device 202, and carry out the flying shuttle rotary wheel interruption and return; Filtering uses clock counting device 202 more than or equal to set point, obtain the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device 204 of flying shuttle rotary wheel rotation direction device for marking 203, filtering is reinitialized with clock counting device 202, and flying shuttle rotary wheel interrupts returning;
Filtering is used for certain hour is counted with clock counting device 202;
Flying shuttle rotary wheel rotation direction device for marking 203 is used to receive the signal that flying shuttle rotary wheel transmits, and the rotation direction of flying shuttle rotary wheel is changed to characterization value;
Flying shuttle rotary wheel number of revolutions counting device 204 is used for the number of revolutions of flying shuttle rotary wheel is counted.
In the process that drives flying shuttle rotary wheel, at first 201 pairs of filtering of processing unit are carried out initialization with clock counting device 202, flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device 204; Enter in the interrupt response of flying shuttle rotary wheel rotation, whether the counting that this moment, processing unit 201 was judged filtering usefulness clock counting device 202 is during less than set point, when clock counting device 202 is used in judged result filtering less than set point, 201 pairs of filtering of processing unit reinitialize with clock counting device 202, and flying shuttle rotary wheel interrupts returning; When filtering uses clock counting device 202 more than or equal to set point, processing unit 201 obtains the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device 204 of flying shuttle rotary wheel rotation direction device for marking 203, filtering is reinitialized with clock counting device 202, and flying shuttle rotary wheel interrupts returning; Repetitive operation guarantees flying shuttle rotary wheel in case rotate, and then responds the rotation of flying shuttle rotary wheel, and obtains the rotation direction and the number of revolutions of flying shuttle rotary wheel.Wherein interrupt being created in filtering with the counting of clock counting device 202 during less than set point, then be considered to disturb, for example shake etc., the speed of disturbing is far away faster than artificially to the rotation of flying shuttle rotary wheel, therefore, when filtering is counted less than set point with clock counting device 202, interrupt response at short notice is interference such as shake, interference is not carried out the flying shuttle rotary wheel rotation direction is characterized and the number of revolutions counting, only when filtering is counted more than or equal to set point with clock counting device 202, just be considered to artificial rotation to flying shuttle rotary wheel, processing unit 201 reads the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device 204 of flying shuttle rotary wheel rotation direction device for marking 203.Thereby guaranteed under the situation that interference produces, not count, promptly do not produced the situations of changeing more, guaranteed the accurate and stable of drive unit response.
Referring to Fig. 3, a kind of digital TV test signal generator comprises display operating device 301 and output device 302 and flying shuttle rotary wheel drive unit 303;
Display operating device 301 comprises rotation situation that is used to change flying shuttle rotary wheel and the rotation situation that shows flying shuttle rotary wheel;
Output device 302 is used for test signal is sent to Devices to test;
Flying shuttle rotary wheel drive unit 303 is used for filtering is carried out initialization with 202 initialization of clock counting device, flying shuttle rotary wheel rotation direction device for marking 203 and flying shuttle rotary wheel number of revolutions counting device 204, flying shuttle rotary wheel is interrupted responding, the flying shuttle rotary wheel rotation situation that reading displayed operating means 301 is sent, according to the position of rule and the numerical value of the sign flying shuttle rotary wheel rotation situation on the rotation situation change display operating device 301, and the test signal that sends after flying shuttle rotary wheel driven sends to output device 302.
Send in the process of digital TV test signal at digital TV test signal generator, change the rotation situation of flying shuttle rotary wheel by display operating device 301, and drive by the rotation situation of 303 pairs of flying shuttle rotary wheels of flying shuttle rotary wheel drive unit, according to the position and the numerical value that characterize the scale of flying shuttle rotary wheel rotation situation on the flying shuttle rotary wheel rotation situation change display operating device 301; And with test signal by output device 302 output to Devices to test with the test Devices to test.
In digital TV test signal generator, the flying shuttle rotary wheel drive unit accurate and stable by above-mentioned response drives flying shuttle rotary wheel, thereby makes digital TV test signal generator accomplish the accurate and stable response of flying shuttle rotary wheel.
Referring to Fig. 4, digital TV test signal generator is based on to be developed on the hardware platform of ARM9 and the LINUX operating system, and promptly drive unit adopts the ARM9 chip, and model is S3C2440A.Hardware principle according to flying shuttle rotary wheel, wherein comprise two outputs on the flying shuttle rotary wheel 403, first output 401, second output 402, for example: first output 401 of flying shuttle rotary wheel 403 is connected on the pin that has interrupt function among the ARM9, on second output, the 402 flying shuttle rotary wheel rotation direction device for marking pins that are connected among the ARM9, when flying shuttle rotary wheel 403 rotates, first output 401 puts 1, and second output 402 puts 0, the characterization value that is flying shuttle rotary wheel rotation direction device for marking is 0, is considered to low level, and promptly flying shuttle rotary wheel 403 rotation directions are negative direction; When flying shuttle rotary wheel 403 upwards rotates, first output, 401 outputs put 1, and second output 402 puts 1, the characterization value that is flying shuttle rotary wheel rotation direction device for marking is changed to 1, be considered to high level, be that flying shuttle rotary wheel 403 rotation directions are positive direction, can both guarantee in time to be counted when flying shuttle rotary wheel rotates this moment, can judge the rotation direction of flying shuttle rotary wheel again.
By adopting filtering clock counting device, can make interruption in the last certain hour of having no progeny in once, can not enter into interrupt response once more, be considered to disturb less than the interrupt response of filtering with the time of clock counting device setting, for example shake etc., the interrupt response that it produces is faster than artificial continuous action, then will not move as the rotation of flying shuttle rotary wheel and count, only more than or equal to this time, then be considered to artificial continuous action, promptly this action can be counted as the rotation of flying shuttle rotary wheel, thereby guaranteed not take place the situations of changeing more; And by to high level response, guaranteed that flying shuttle rotary wheel one produces action, just produced the value of corresponding direction and number of times, thereby guaranteed situation about not throwing switch interrupting; Make the driving method of flying shuttle rotary wheel and drive unit more accurately and stable, and make the rotation situation of the real flying shuttle rotary wheel that whole digital TV test signal generator is more accurate and stable.
Digital TV test signal generator is based on to be developed on the hardware platform of ARM9 and the LINUX operating system, makes development efficiency higher, can realize complicated function in the digital television signal test macro.Owing to adopt ARM9 to drive flying shuttle rotary wheel, than controlling cost lower with common desktop computer.
Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention all should fall in the definite protection range of claims of the present invention.
Claims (10)
1. the flying shuttle rotary wheel driving method of a digital TV test signal generator is characterized in that, may further comprise the steps:
Filtering is also counted with the initialization of clock counting device;
Flying shuttle rotary wheel rotation direction device for marking and flying shuttle rotary wheel number of revolutions counting device are carried out initialization;
Flying shuttle rotary wheel interrupt response;
Use the clock counting device less than set point when filtering, filtering is reinitialized with the clock counting device, flying shuttle rotary wheel interrupts returning;
Use the clock counting device more than or equal to set point when filtering, obtain the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device of flying shuttle rotary wheel rotation direction device for marking, filtering is reinitialized with the clock counting device, flying shuttle rotary wheel interrupts returning.
2. the flying shuttle rotary wheel driving method of digital TV test signal generator according to claim 1, it is characterized in that, described flying shuttle rotary wheel rotation direction device for marking is one, and the characterization value of described flying shuttle rotary wheel rotation direction device for marking changes according to the rotation direction of described flying shuttle rotary wheel.
3. the flying shuttle rotary wheel driving method of digital TV test signal generator according to claim 2 is characterized in that, described flying shuttle rotary wheel has an output that triggers described flying shuttle rotary wheel interrupt response.
4. the flying shuttle rotary wheel driving method of digital TV test signal generator according to claim 3 is characterized in that, the count value of described number of revolutions counting device increases or reduces according to the characterization value of flying shuttle rotary wheel rotation direction device for marking.
5. the flying shuttle rotary wheel driving method of digital TV test signal generator according to claim 4 is characterized in that, described filtering is 24000 with the set point of clock counting device.
6. the flying shuttle rotary wheel drive unit of a digital TV test signal generator, it is characterized in that, comprise processing unit (201), filtering clock counting device (202), flying shuttle rotary wheel rotation direction device for marking (203) and flying shuttle rotary wheel number of revolutions counting device (204);
Described filtering is used for certain hour is counted with clock counting device (202);
Described flying shuttle rotary wheel rotation direction device for marking (203) is used to receive the signal that flying shuttle rotary wheel transmits, and the rotation direction of flying shuttle rotary wheel is changed to characterization value;
Described flying shuttle rotary wheel number of revolutions counting device (204) is used for the number of revolutions of flying shuttle rotary wheel is counted;
Described processing unit (201) is used for described filtering is carried out initialization with clock counting device (202), described flying shuttle rotary wheel rotation direction device for marking (203) and described flying shuttle rotary wheel number of revolutions counting device (204), and flying shuttle rotary wheel interrupted responding, judge that filtering is with clock counting device (202) counting during whether less than set point, when clock counting device (202) is used in filtering less than set point, filtering is reinitialized with clock counting device (202), and carry out the flying shuttle rotary wheel interruption and return; Filtering uses clock counting device (202) more than or equal to set point, obtain the count value of the characterization value and the flying shuttle rotary wheel number of revolutions counting device (204) of flying shuttle rotary wheel rotation direction device for marking (203), filtering is reinitialized with clock counting device (202), and flying shuttle rotary wheel interrupts returning.
7. the flying shuttle rotary wheel drive unit of digital TV test signal generator according to claim 6, it is characterized in that, described flying shuttle rotary wheel rotation direction device for marking (203) is one, the characterization value of flying shuttle rotary wheel rotation direction device for marking (203) changes according to the rotation direction of described flying shuttle rotary wheel, and the count value of described flying shuttle rotary wheel number of revolutions counting device (204) increases or reduces according to the characterization value of flying shuttle rotary wheel rotation direction device for marking (203).
8. a digital TV test signal generator comprises display operating device (301) and output device (302);
Described display operating device (301) is used to change the rotation situation of flying shuttle rotary wheel and the rotation situation that shows flying shuttle rotary wheel;
Described output device (302) is used for test signal is sent to Devices to test;
It is characterized in that, also comprise flying shuttle rotary wheel drive unit (303);
Described flying shuttle rotary wheel drive unit (303) is used for filtering clock counting device (202) initialization, flying shuttle rotary wheel rotation direction device for marking (203) and flying shuttle rotary wheel number of revolutions counting device (204) carry out initialization, flying shuttle rotary wheel is interrupted responding, read the flying shuttle rotary wheel rotation situation that described display operating device (301) is sent, change the position of rule and the numerical value of the sign flying shuttle rotary wheel rotation situation on the described display operating device (301) according to described rotation situation, and the test signal that sends after flying shuttle rotary wheel driven sends to described output device (302).
9. digital TV test signal generator according to claim 8 is characterized in that, described flying shuttle rotary wheel drive unit (303) adopts the ARM9 chip, and model is S3C2440A.
10. digital TV test signal generator according to claim 9 is characterized in that, described display operating device (301) comprises LCD, keyboard and flying shuttle rotary wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100851489A CN101562757B (en) | 2009-05-27 | 2009-05-27 | Digital TV test signal generator and method and device for driving flying shuttle rotary wheel thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100851489A CN101562757B (en) | 2009-05-27 | 2009-05-27 | Digital TV test signal generator and method and device for driving flying shuttle rotary wheel thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101562757A CN101562757A (en) | 2009-10-21 |
| CN101562757B true CN101562757B (en) | 2011-02-09 |
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| CN2009100851489A Expired - Fee Related CN101562757B (en) | 2009-05-27 | 2009-05-27 | Digital TV test signal generator and method and device for driving flying shuttle rotary wheel thereof |
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| CN105354116B (en) * | 2015-10-23 | 2019-03-01 | 青岛海信移动通信技术股份有限公司 | A kind of hot plug detection method, device, system and mobile terminal |
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