CN1329867C - Scanning speed control device and method - Google Patents
Scanning speed control device and method Download PDFInfo
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- CN1329867C CN1329867C CNB011292873A CN01129287A CN1329867C CN 1329867 C CN1329867 C CN 1329867C CN B011292873 A CNB011292873 A CN B011292873A CN 01129287 A CN01129287 A CN 01129287A CN 1329867 C CN1329867 C CN 1329867C
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Abstract
The present invention relates to a control device and a method for scanning speed, which comprises a judgment device and a driving device, wherein the judgment device comprises an image buffer, an upper and a lower counters and a comparator. The judgment device of the present invention is used for receiving input image data, and the upper and the lower counters are used for counting the amount of the input image data stored and taken by the image buffer. Then, the comparator is used for judging whether scanning speed needs increasing or reducing, and judgment data are output to the driving device. The scanning speed can be autoamtically controlled by the present invention.
Description
Technical field:
The present invention relates to a kind of scan controller and control method, be specifically related to a kind of control device and control method of sweep velocity.
Background technology:
Because development of science and technology has been invented many convenient machines in the present industrial and commercial society, one of them is exactly automatic sheet feeder (Auto Document Feeder; Be called for short ADF), it can be applied in different machines, on printer, duplicating machine or scanner etc., can automatically the paper of needs be sent in the machine just these machines need not utilized manually.In the time of in paper is placed on automatic paper feeder, processing unit in the machine (as processor or Application Specific Integrated Circuit etc.) just can learn that paper deposited in the automatic paper feeder by inductor, and when being equipped with the machinery requirement input paper of automatic sheet feeder, processing unit will be controlled automatic sheet feeder paper is sent into machine intimate.Automatic paper feeder is very convenient really in the application of general machine, but when being applied in scanner on the time, because the design conditions of automatic sheet feeder in mechanism, can make that the scanner generation can't be implemented to advance, the restriction of retreat scans.
Summary of the invention:
In view of this, the invention provides a kind of control device of sweep velocity, utilize the speed of control motor to avoid advancing, retreating the generation of probability, but do not wish to avoid to advance, the situation of retreat scans and sacrifice sweep velocity.Therefore utilize up-down counter to come the capacity of recording image impact damper,, make sweep velocity can not be subjected to too big influence as the determination methods of sweep velocity.
According to an aspect of the present invention, a kind of control device of sweep velocity is provided here, be used for gated sweep speed, this control device has: a judgment means, a drive unit and an input/output interface, wherein said judgment means, be couple to an input media, be used for receiving the input image data, calculate the access data quantity of described input image data, and providing a judgement data and image output data according to described access data quantity, wherein said judgement data is in order to judge whether to increase or reduce described sweep velocity; Described drive unit is couple to described judgment means, is used to receive described judgement data, and comes gated sweep speed according to described judgement data; Described IO interface is couple to described judgment means, is used to receive described image output data.
Judgment means of the present invention is used for gated sweep speed, and this judgment means has: image impact damper, up-down counter, comparer, and wherein the image impact damper is used for receiving the input image data, and the image data of temporary input transmits the image output data then.Up-down counter is used for counting the access data quantity with the recording image impact damper, exports enumeration data then.Comparer is used for receiving this enumeration data, enumeration data is compared with a predetermined maximum access amount, and judge whether to increase or reduce sweep velocity according to comparative result, exports the judgement data at last again.
According to a further aspect in the invention, a kind of control method of sweep velocity is provided here, in the control device of described sweep velocity, use, be used for gated sweep speed, it is characterized in that: this method may further comprise the steps: the image data that input is provided for described judgment means, the access data quantity in described input image data and the described judgment means is counted and write down to described judgment means, thereby draw an enumeration data; For described judgment means provides a maximum access data quantity, described judgment means is calculated the ratio of described meter beacon data and described maximum access data quantity; According to the ratio of described enumeration data and described maximum access data quantity, the size of decision sweep velocity; Described IO interface receives the image data by described judgment means output.
From the above mentioned, the present invention is by the data quantity of image impact damper institute access, enumeration data is sent to comparer through counter, allow comparer confirm paper be in begin to send into state, just in executing state or near the been scanned state, under different states, take different speed.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate:
Description of drawings:
Fig. 1 is the gated sweep speed device of preferred embodiment of the present invention;
Fig. 2 is the method flow diagram of the gated sweep speed of preferred embodiment of the present invention.
Description of reference numerals:
10: input media
100: optical sensing subassembly
102: analog/digital converter (ADC)
104: image process unit
12: judgment means
120: the image impact damper
122: counter
124: comparer
14: drive unit
140: motor controller
142: motor
16: input/output interface
20-32: the step of preferred embodiment of the present invention
Embodiment:
Please refer to Fig. 1, is the gated sweep speed device of preferred embodiment of the present invention, and this gated sweep speed device comprises: the optical sensing subassembly 100 of input media 10, analog/digital converter 102 and image process unit 104; The image impact damper 120 of judgment means 12, up-down counter 122 and comparer 124; The motor controller 140 of drive unit 14 and motor 142; And input/output interface 16.
The annexation that couples of gated sweep speed device is that analog/digital converter 102 couples optical sensing subassembly 100, image process unit 104 couples analog/digital converter 102 and image impact damper 120, image impact damper 120 couples input/output interface 16, up-down counter 122 couples the input end of image impact damper 120 and the output terminal of image impact damper 120, comparer 124 couples up-down counter 122 and motor controller 140, and motor controller 140 couples motor 142.
When scanning, optical sensing subassembly 100 can utilize charge coupled device (charge coupledevice, be called for short CCD) detect external signal after, after the light intensity that CCD sensed utilized opto-electronic conversion, become photocurrent, be stored in storage electrode, become signal charge, through changing into different potential difference (PD), produce simulating signal again.Optical sensing subassembly 100 outputs to simulating signal analog/digital converter 102 again, after analog/digital converter 102 receives simulating signal, analog/digital converter 102 becomes digital signal with analog signal conversion, then digital signal is outputed to image process unit 104.Image process unit 104 receiving digital signals convert digital signal to the input image data after treatment, will import image data at last and be sent in image impact damper 120 and the up-down counter 122.
After image impact damper 120 receives the input image data, to import image data and be temporarily stored in image impact damper 120, if the gated sweep speed device will be temporarily stored in the input image data of image impact damper 120 finish dealing with after, just will import image data and change into the image output data, output to input/output interface 16 and up-down counter 122 then.
If when image process unit 104 will be imported image data and output to image impact damper 120, up-down counter 122 will drive the last tally function of up-down counter 122, allows up-down counter 122 add one.In like manner, when if up-down counter 122 detects the image output data input to input/output interface 16, up-down counter 122 will drive the following tally function of up-down counter 122, allow up-down counter 122 subtract one, the output enumeration data is in comparer 124 after the enumeration data in adjusting up-down counter 122.Wherein present embodiment is only listed a kind of method of counting, and certainly the upper and lower tally function of up-down counter also can be put upside down use with the foregoing description, and the personnel that know this technology can freely bring into play not losing under this principle.Wherein up-down counter 122 is used for calculating and the access data quantity of recording image impact damper 120, exports enumeration data then in comparer 124.
After comparer 124 count pick up data, this enumeration data is compared with a predetermined maximum access data quantity, judge whether to increase or reduce sweep velocity according to comparative result, then the judgement data is outputed to motor controller 140.Motor controller just can go to control the speed of motor 142 according to the judgement data that receives.For example, when enumeration data greater than maximum access data quantity 3/4 the time, sweep velocity is adjusted to whole speed.When enumeration data less than maximum access data quantity 3/4 but greater than maximum access data quantity 1/2 the time, sweep velocity is adjusted to 3/4 of whole speed.When enumeration data less than maximum access data quantity 1/2 but greater than maximum access data quantity 1/4 the time, sweep velocity is adjusted to 1/2 of whole speed.When enumeration data less than maximum access data quantity 1/4 the time, sweep velocity is adjusted to 1/4 of whole speed.
By comparison means shown in Figure 1 as can be known, need a kind of method that judges whether to increase or to reduce sweep velocity, below just enumerate a kind of determination methods is described.
Please refer to Fig. 2, this illustrates the method flow diagram of the gated sweep speed of preferred embodiment of the present invention.For judgment means is set a maximum access data quantity.The image impact damper of this judgment means receives the input image data, temporary input image data, and image output data.
The access data quantity of this image impact damper is counted and write down to up-down counter, and export an enumeration data;
Comparer, receive enumeration data, compare with a predetermined maximum access data quantity, judge whether to increase or reduce sweep velocity according to comparative result according to enumeration data, and the judgement data exported to motor controller, motor controller is according to the speed of this judgement data control motor.
As mentioned above, according to the ratio of enumeration data and maximum access data quantity, the decision sweep velocity.Then, at first execution in step 20, whether judge enumeration data greater than 3/4 of maximum access data quantity, and when enumeration data during greater than maximum access data quantity, execution in step 26 is adjusted to whole speed with sweep velocity.Otherwise, execution in step 22, judge enumeration data whether less than maximum access data quantity 1/2 but greater than 1/4 of maximum access data quantity, when enumeration data less than maximum access data quantity 1/2 but greater than maximum access data quantity 1/4 the time, execution in step 30 is adjusted to 1/2 of whole speed with sweep velocity.Otherwise whether execution in step 32 judges enumeration data less than 1/4 of maximum access data quantity, and sweep velocity is adjusted to 1/4 of whole speed.Wherein, knowing the personnel of this technology can be in the relation of not losing between the ratio that can freely allocate sweep velocity and record data/maximum access data quantity under this principle.
Advantage of the present invention be exactly when the stored data quantity of image impact damper not simultaneously, give different sweep velocitys, make scanner can't advance, in the retreat scans, still keep preferable sweep velocity.
Though the present invention's preferred embodiment openly as above; but it is not in order to qualification the present invention, any personnel that are familiar with this technology, without departing from the spirit and scope of the present invention; can be used for a variety of modifications and variations, but protection scope of the present invention should be with being as the criterion that claims limit.
Claims (11)
1, a kind of control device of sweep velocity in order to gated sweep speed, is characterized in that: comprising:
A judgment means, be couple to an input media, be used for receiving the input image data, calculate the access data quantity of described input image data, and providing a judgement data and image output data according to described access data quantity, wherein said judgement data is in order to judge whether to increase or reduce described sweep velocity;
A drive unit is couple to described judgment means, is used to receive described judgement data, and comes gated sweep speed according to described judgement data;
An IO interface is couple to described judgment means, is used to receive described image output data.
2, the control device of sweep velocity according to claim 1 is characterized in that: described judgment means comprises:
An image impact damper is couple to the output terminal of described input media, is used to receive described input image data, and temporary described input image data is exported described image output data;
A up-down counter is couple to the input end and the output terminal of described image impact damper, is used to count and write down the access data quantity of this image impact damper, and exports an enumeration data;
A comparer, be couple to described up-down counter, be used to receive described enumeration data, this enumeration data is compared with a predetermined maximum access data quantity, and judge whether to increase or reduce described sweep velocity, and export described judgement data according to comparative result.
3, the control device of sweep velocity according to claim 2, it is characterized in that: when described up-down counter detects described input image data and is input to described image impact damper, described up-down counter drives tally function on it, when described up-down counter detected described image output data input to described IO interface, described up-down counter drove its tally function down.
4, the control device of sweep velocity according to claim 2, it is characterized in that: when described up-down counter detects described input image data and is input to described image impact damper, described up-down counter drives its tally function down, when described up-down counter detected described image output data input to described IO interface, described up-down counter drove tally function on it.
5, the control device of sweep velocity according to claim 1 is characterized in that: described input media comprises:
An optical sensing subassembly in order to the detection external signal, and is exported a kind of simulating signal;
An analog/digital converter is coupled to described optical sensing subassembly, in order to receive described simulating signal, described analog signal conversion is become digital signal, and exports this digital signal;
An image process unit is coupled to described analog-digital converter and described judgment means, in order to receive described digital signal, converts described digital signal to described input image data, and should import image data and output to described judgment means.
6, the control device of sweep velocity according to claim 1 is characterized in that: described drive unit comprises:
A motor;
A motor controller is couple to described motor and described judgment means, in order to receiving described judgement data, and controls the speed of this motor according to this judgment data.
7, a kind of control method of sweep velocity is used in the control device of each described sweep velocity among claim 1-6, is used for gated sweep speed, it is characterized in that: this method may further comprise the steps:
For described judgment means provides the image data of input, described judgment means counting and write down access data quantity in described input image data and the described judgment means, thus draw an enumeration data;
For described judgment means provides a maximum access data quantity, described judgment means is calculated the ratio of described enumeration data and described maximum access data quantity;
According to the ratio of described enumeration data and described maximum access data quantity, the size of decision sweep velocity;
Described IO interface receives the image data by described judgment means output.
8, the control method of sweep velocity according to claim 7 is characterized in that: when described enumeration data greater than described maximum access data quantity 3/4 the time, adjusting described sweep velocity is whole speed.
9, the control method of sweep velocity according to claim 7, it is characterized in that: when described enumeration data less than described maximum access data quantity 3/4 but greater than described maximum access data quantity 1/2 the time, adjusting described sweep velocity is 3/4 of whole speed.
10, the control method of sweep velocity according to claim 7, it is characterized in that: when described enumeration data less than described maximum access data quantity 1/2 but greater than described maximum access data quantity 1/4 the time, adjusting described sweep velocity is 1/2 of whole speed.
11, the control method of sweep velocity according to claim 7 is characterized in that; When described enumeration data less than described maximum access data quantity 1/4 the time, adjusting described sweep velocity is 1/4 of whole speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011292873A CN1329867C (en) | 2001-06-20 | 2001-06-20 | Scanning speed control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011292873A CN1329867C (en) | 2001-06-20 | 2001-06-20 | Scanning speed control device and method |
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| Publication Number | Publication Date |
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| CN1392511A CN1392511A (en) | 2003-01-22 |
| CN1329867C true CN1329867C (en) | 2007-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011292873A Expired - Lifetime CN1329867C (en) | 2001-06-20 | 2001-06-20 | Scanning speed control device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478627B (en) * | 2008-01-04 | 2011-08-31 | 虹光精密工业（苏州）有限公司 | Video capture apparatus and method |
| WO2015043698A1 (en) * | 2013-09-25 | 2015-04-02 | Linde Aktiengesellschaft | Column comprising liquid distributors and mass transfer trays made up of angle profiles |
| CN111325655A (en) * | 2018-12-14 | 2020-06-23 | 中强光电股份有限公司 | Image processing system and image processing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143880A (en) * | 1995-07-06 | 1997-02-26 | 村田机械株式会社 | Facsimile device having memory communicating function |
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2001
- 2001-06-20 CN CNB011292873A patent/CN1329867C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143880A (en) * | 1995-07-06 | 1997-02-26 | 村田机械株式会社 | Facsimile device having memory communicating function |
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