CN1392511A - Scanning speed control device and method - Google Patents

Scanning speed control device and method Download PDF

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Publication number
CN1392511A
CN1392511A CN 01129287 CN01129287A CN1392511A CN 1392511 A CN1392511 A CN 1392511A CN 01129287 CN01129287 CN 01129287 CN 01129287 A CN01129287 A CN 01129287A CN 1392511 A CN1392511 A CN 1392511A
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data
sweep velocity
image
down counter
order
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CN1329867C (en
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王国任
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Transpacific IP Pte Ltd.
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Transpacific IP Ltd
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Abstract

The present invention relates to scanning speed control device and method. The control device has judging unit and driving unit, the judging unit includes image buffer, up, and down counters, and comparator. The judging unit is used in accepting input image data, the up and down counters count the amount of input image data access by the image buffer, and the comparator decides either to increase or to decrease the scanning speed and outputs the result to the driver. The device and the method makes it possible to control the scanning speed autoamtically.

Description

The control device of sweep velocity and control method
The present invention relates to a kind of scan controller and control method, and be particularly related to a kind of control device and control method of sweep velocity.
Because development of science and technology has been invented various convenient machines in the present industrial and commercial society, one of them is exactly automatic sheet feeder (Auto Document Feeder; 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 at the machinery requirement input paper that is equipped with automatic sheet feeder constantly, 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.
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.
The invention provides a kind of control device of sweep velocity, be used for gated sweep speed, this control device has: judgment means, drive unit and input/output interface.Wherein judgment means is used for receiving the input image data, exports judgement data and image output data then, and drive unit is used for receiving the judgement data, and input/output interface is used for receiving the image output data.
Judgment means of the present invention is used for gated sweep speed, this judgment means has: image impact damper, up-down counter, comparer, wherein the image impact damper is used for receiving the input image data image data of temporary input then, transmits the image output data at last again.Up-down counter is used for calculating and the access data quantity of recording image impact damper, exports enumeration data then.Comparer is used for the count pick up data, and judges whether to increase or reduce sweep velocity according to enumeration data, exports the judgement data at last again.
The present invention provides a kind of control method of sweep velocity in addition, and its method is as follows: enumeration data and maximum access data quantity are provided earlier, according to the ratio of enumeration data and maximum access data quantity, determine sweep velocity again.
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:
The drawing explanation:
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, export digital signal then to image process unit 104, image process unit 104 receiving digital signals, after treatment digital signal is converted to the input image data, transmit the input image data at last in image impact damper 120 and 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 datas were imported in image process unit 104 outputs 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, after the enumeration data in adjusting up-down counter 122, the output enumeration data is in comparer 124.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, just judge whether to increase or reduce sweep velocity according to enumeration data, export the judgement data then 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: the data access amount that demonstrates image impact damper 120 when enumeration data has tailed off gradually, and can know that scanning is through with this moment, and comparer 124 will inform that motor controller 140 reduces the speed of motor through the judgement data.
Need a kind of method that judges whether to increase or to reduce sweep velocity as can be known by Fig. 1 comparison means, below just enumerate the explanation a kind of determination methods:
Please refer to Fig. 2, is the method flow diagram of the gated sweep speed of preferred embodiment of the present invention.Enumeration data and maximum access data quantity are provided, according to the ratio of enumeration data and maximum access data quantity, determine sweep velocity again.Then, at first execution in step 20, whether judge enumeration data greater than 3/4 of maximum access data quantity, if enumeration data is 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 3/4 and greater than 1/2 of maximum access data quantity, if enumeration data less than maximum access data quantity 3/4 and greater than 1/2 o'clock of maximum access data quantity, execution in step 28 was adjusted to 3/4 of whole speed with sweep velocity.Otherwise execution in step 24, judge enumeration data whether less than maximum access data quantity 1/2 and greater than 1/4 of maximum access data quantity, if enumeration data less than maximum access data quantity 1/2 and greater than 1/4 o'clock of maximum access data quantity, execution in step 30 was 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 with 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. the control device of a sweep velocity in order to control one scan speed, is characterized in that: comprising:
One judgment means is coupled to this input media, in order to receive an input image data, according to calculating and writing down the access data quantity of this input image data in this judgment means, exports a judgement data and an image output data;
One drive unit is coupled to this judgment means, in order to receive this judgement data;
One IO interface is coupled to this judgment means, in order to receive this image output data.
2. the control device of sweep velocity according to claim 1, it is characterized in that: this judgment means comprises:
One image impact damper is coupled to the output terminal of this input media, in order to receiving this input image data, and temporary this input image data, and export this image output data;
One up-down counter is coupled to the input end of this image impact damper and the output terminal of this image impact damper, in order to the access data quantity that calculates and write down this image impact damper, and exports an enumeration data;
One comparer is coupled to this up-down counter, in order to receive this enumeration data, judges whether to increase and this sweep velocity of minimizing either-or according to this enumeration data, and exports this judgement data.
3. the control device of sweep velocity according to claim 2, it is characterized in that: when this up-down counter detects this input image data and inputs to this image impact damper, then drive this up-down counter one on tally function, when if this up-down counter detects this image output data input to this IO interface, then drive the tally function of this up-down counter.
4. the control device of sweep velocity according to claim 2, it is characterized in that: this up-down counter detects this input image data when importing this image impact damper, then drive the tally function of this up-down counter, if this up-down counter when detecting this image output data input, then drive to this IO interface this up-down counter one on tally function.
5. the control device of sweep velocity according to claim 1, it is characterized in that: this input media comprises:
One optical sensing subassembly in order to the detection external signal, and is exported a simulating signal;
One analog/digital converter couples this optical sensing subassembly, in order to receive this simulating signal, this analog signal conversion is become a digital signal, and exports this digital signal;
One image process unit is coupled to this analog-digital converter and this judgment means, in order to receive this digital signal, converts this digital signal to this input image data, and exports this input image data to this judgment means.
6. the control device of sweep velocity according to claim 1, it is characterized in that: this drive unit comprises:
One motor;
One motor controller is coupled to this motor and this judgment means, in order to receive this judgement data, controls the speed of this motor according to this judgment data.
7. the control method of a sweep velocity, in order to control one scan speed, it is characterized in that: the method for this gated sweep speed comprises the following steps:
One enumeration data is provided;
One maximum access data quantity is provided;
According to the ratio of this enumeration data and maximum access data quantity, the decision sweep velocity.
8. the control method of sweep velocity according to claim 7 is characterized in that: when this enumeration data greater than this maximum access data quantity 3/4 the time, this sweep velocity is whole speed.
9. the control method of sweep velocity according to claim 7 is characterized in that: when this enumeration data less than this maximum access data quantity 3/4 and greater than this maximum access data quantity 1/2 the time, this sweep velocity is 3/4 of whole speed.
10. the control method of sweep velocity according to claim 7 is characterized in that: when this enumeration data less than this maximum access data quantity 1/2 and greater than this maximum access data quantity 1/4 the time, this sweep velocity is 1/2 of whole speed.
11. the control method of sweep velocity according to claim 7 is characterized in that: when this enumeration data less than this maximum access data quantity 1/4 the time, this sweep velocity is 1/4 of whole speed.
CNB011292873A 2001-06-20 2001-06-20 Scanning speed control device and method Expired - Lifetime CN1329867C (en)

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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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CN1392511A true CN1392511A (en) 2003-01-22
CN1329867C CN1329867C (en) 2007-08-01

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Cited By (3)

* Cited by examiner, † Cited by third party
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
CN105579126A (en) * 2013-09-25 2016-05-11 林德股份公司 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0923322A (en) * 1995-07-06 1997-01-21 Murata Mach Ltd Facsimile equipment with memory communication function

Cited By (3)

* Cited by examiner, † Cited by third party
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
CN105579126A (en) * 2013-09-25 2016-05-11 林德股份公司 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

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