CN104545773A - CCD electronic imaging device and endoscope thereof - Google Patents
CCD electronic imaging device and endoscope thereof Download PDFInfo
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- CN104545773A CN104545773A CN201510004931.3A CN201510004931A CN104545773A CN 104545773 A CN104545773 A CN 104545773A CN 201510004931 A CN201510004931 A CN 201510004931A CN 104545773 A CN104545773 A CN 104545773A
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- Prior art keywords
- endoscope
- signal
- module
- electronic imaging
- display
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
Abstract
The invention discloses a CCD electronic imaging device and an endoscope with the CCD electronic imaging device therein. The CCD electronic imaging device comprises a front drive module, an image processing and signal drive module and a display module, the front drive module is in drive connection with a CCD image pick-up unit, and the image processing and signal drive module is connected with the front drive module through a cable and further connected with the display module; the front drive module is further provided with a drive signal impedance matching circuit, and the drive signal impedance matching circuit is used for matching the characteristic impedance of the cable with the load impedance; the image processing and signal drive module generates drive signals, the drive signals are transmitted to the front drive module through cable, and meanwhile, the image processing and signal drive module receives image signals transmitted from the front drive module through cable, processes images and outputs video signals for display to the display module. The CCD electronic imaging device is simple in structure, convenient to carry, stable in signal when using, and good in imaging quality.
Description
Technical field
The present invention relates to a kind of electronic imaging apparatus of CCD imaging apparatus, particularly a kind of CCD electronic imaging apparatus and endoscope thereof.
Background technology
In recent years, the endoscope with CCD imaging device is widely used at medical field and industrial circle.The transmission cable formed from the CCD imaging apparatus in endoscope distal end portion to processor has the length of about several meters, the driving signal frequency of CCD is high, wavelength is short, namely the length of wavelength and cable can be compared, signal produces reflection, reflected signal is superimposed upon the waveform shape that original signal can change original signal, causes wave distortion, and then affects image quality.
Along with medical field and industrial circle are to the further pursuit of high quality image, the integrity demands of CCD imaging apparatus drive singal is improved further, namely require that the characteristic impedance of drive singal transmission cable and load impedance match, keep the integrity of drive signal waveform to reach the object realizing high quality image.
Meanwhile, the certain fields of medical treatment and industry require that endoscope apparatus has compact conformation and feature easy to carry.Such as medical field patient (human or animal) cannot send hospital to or some areas do not possess the reasons such as medical condition, and demand possesses corresponding doctor and carries related endoscopes device to Site Service; Also as industrial circle needs operation in the wild or operation field not to possess the situations such as power supply, operating personnel is needed to carry related endoscopes to field operation etc.
Japanese Unexamined Patent Publication 2-34140 publication and Japanese Unexamined Patent Publication 2-126124 publication disclose the correlation technique that in endoscope, drive singal generation source place cable characteristic impedance is mated with load impedance, but, the situation that the cable characteristic impedance of drive singal receiving terminal place is mated with load impedance is not proposed.
China application publication number CN 102245079 A openly generates a kind of signal output substrate of CCD drive singal, but, the situation that the cable characteristic impedance of drive singal receiving terminal place is mated with load impedance is not proposed.
The open impedance-matching device of China application publication number CN 102893598 A and the endoscope with this impedance-matching device, relate to the endoscope of the impedance matching of the transfer path obtained when transmitting to processor the image pickup signal exported from the imaging apparatus in endoscope distal end portion via cable, but, the situation that the characteristic impedance of drive singal cable is mated with load impedance is not proposed.
China's application publication number CN 102245079 A publication openly generates a kind of signal output substrate of CCD drive singal, this signal output substrate can be arranged in endoscope's signal connector, also can be arranged in operating portion, signal driver module is provided with in it, the fujinon electronic video endoscope image processing module of described signal output substrate application is arranged in endoscope main body, and endoscope's substrate is connected via adapter with between image processing module.But, the situation that the cable characteristic impedance of drive singal receiving terminal place is mated with load impedance is not proposed, simultaneously, endoscope's substrate and image processing module are separated in different main bodys, therebetween the shooting analogue signal etc. that the signal transmitted exports as vertical clock signal, horizontal clock signal, reset signal, extinction signals and imaging apparatus is easy to be interfered via signal waveform during adapter, and then affects image quality; Meanwhile, so many Signal transmissions makes connector construction complicated, is unfavorable for that realizing endoscope apparatus has compact conformation and object easy to carry.
China publication No. CN 101548873 B is open as shown in the formula endoscope: a kind ofly can vertically hold the Handheld endoscope holding use with level, and gives a schematic diagram of this endoscope.But, do not mention imaging apparatus and have employed CCD, do not improve the correlation technique of endoscope's drive singal yet.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of structure simple, easy to carry, use time signal stabilization, a kind of CCD electronic imaging apparatus that image quality is good and endoscope thereof.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of CCD electronic imaging apparatus, described imaging device comprises front wheel driving module, image procossing and signal driver module, display module, described front wheel driving module drive connects CCD image unit, described image procossing and signal driver module connect front wheel driving module by cable, and connect with described display module; Wherein said front wheel driving module is also provided with drive singal impedance matching circuit, and described drive singal impedance matching circuit is for mating characteristic impedance and the load impedance of cable.
In one embodiment of the invention, the impedance matching mode in described drive singal impedance matching circuit is coupling in parallel, and parallel resistance equals the characteristic impedance of cable.
In one embodiment of the invention, described drive singal is the horizontal Timing driver signal and pixel reset signal that frequency is the highest.
In one embodiment of the invention: described image procossing and signal driver module comprise signal generator and signal processor, described signal generator is for generating drive singal and via cable transmission to front wheel driving module, and the signal of video signal that described signal processor is used for front wheel driving module transfer comes is processed into video signal and is transferred to display module.
A kind of endoscope, described endoscope comprises endoscope body and endoscope's display and control main body, and described endoscope also comprises the CCD electronic imaging apparatus according to any one of claim 1 to 5.
In one embodiment of the invention, the front wheel driving module in CCD electronic imaging apparatus, image procossing and signal driver module are all arranged in endoscope body, and the display module in CCD electronic imaging apparatus is arranged in endoscope's display and control main body.
In one embodiment of the invention, the front wheel driving module installation in CCD electronic imaging apparatus is in endoscope body, and the image procossing in CCD electronic imaging apparatus and signal driver module, display module are all arranged in endoscope's display and control main body.
In one embodiment of the invention, described endoscope body is connected by adapter with endoscope display and control main body.
In one embodiment of the invention, described endoscope body and endoscope's display and control main body are formed in one structure.
CCD electronic imaging apparatus structure provided by the invention is simple, signal stabilization when using, and image quality is good, quality is high.The Handheld endoscope of this CCD electronic imaging apparatus is set simultaneously, except structure through gathering, easy to carry except, this Handheld endoscope also has the imaging effect of high-quality.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is endoscope structure schematic diagram of the present invention;
Fig. 2 is the CCD electronic imaging apparatus without drive singal impedance matching circuit;
Fig. 3 is the CCD electronic imaging apparatus in the present invention with drive singal impedance matching circuit;
Fig. 4 a is the standard signal waveform that signal generator generates;
Fig. 4 b receives drive signal waveform schematic diagram without CCD when drive singal impedance matching circuit;
Fig. 4 c is that CCD receives drive signal waveform schematic diagram through drive singal impedance matching circuit when;
Fig. 5 is the structural representation of example 1 of the present invention in endoscope;
Fig. 6 is the structural representation of example 2 of the present invention in endoscope;
Numeral and the corresponding component title represented by letter in figure:
10, endoscope body 11, leading section 12, insertion section 13, operating portion 20, endoscope's display and control main body 21, display screen 30, CCD image unit 40, front wheel driving module 41, drive singal impedance matching circuit 50, image procossing and signal driver module 51, signal generator 52, signal processor 60, display module 70, adapter 80, cable.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See Fig. 3, CCD electronic imaging apparatus provided by the invention, it mainly comprises front wheel driving module 40, image procossing and signal driver module 50, display module 60, front wheel driving module 40 drives and connects CCD image unit 30, image procossing and signal driver module 50 connect front wheel driving module 40 by cable 80, and connect with described display module 60; Image procossing and signal driver module 50 generate drive singal, front wheel driving module 40 is transferred to via cable 80, receive front wheel driving module 40 simultaneously and transmit via cable 80 the signal of video signal of coming, and the video signal carrying out image procossing output display is to display module 60, display module 60 is for the video signal that receives image procossing and signal driver module 50 and export and show endoscopic images.
On this basis, in order to improve the quality of this device imaging further, this programme is provided with drive singal impedance matching circuit 41 in front wheel driving module 40, this drive singal impedance matching circuit 41 effectively can mate characteristic impedance and the load impedance of drive singal transmission cable, thus can obtain high-quality drive signal waveform to CCD image unit 30.
Concrete, the impedance matching mode in drive singal impedance matching circuit is coupling in parallel, and parallel resistance equals the characteristic impedance of cable.
Wherein, drive singal is horizontal Timing driver signal H1, H2 and pixel reset signal RG that frequency is the highest.
Further, the image procossing in this programme and signal driver module 50 specifically comprise signal generator 51 and signal processor 52 two parts, and wherein signal generator 51 is for generating drive singal and being transferred to front wheel driving module 40 via cable 80; Signal processor 52 is processed into video signal for front wheel driving module 40 being transmitted the signal of video signal come and is transferred to display module 60.
The image procossing formed thus and the integration of signal driver module make electronic imaging apparatus connect simple, compact conformation, compact size, and its size is enough to be arranged at portable Handheld endoscope.
CCD electronic imaging apparatus of the present invention can be used for being arranged in high quality image, compact conformation and portable Handheld endoscope.
The advantage that illustratively CCD electronic imaging apparatus provided by the invention has in image imaging is carried out below by way of an Experimental comparison figure:
See Fig. 4 a, it is depicted as the standard signal waveform that signal generator generates.
See Fig. 4 b, its CCD be depicted as without drive singal impedance matching circuit receives drive signal waveform schematic diagram, wherein without the CCD electronic imaging apparatus of drive singal impedance matching circuit structure as shown in Figure 2.
See Fig. 4 c, it is depicted as has the CCD reception drive signal waveform schematic diagram with drive singal impedance matching circuit provided by the invention.
Known by the contrast of three figure, the waveform of the drive singal that the CCD electronic imaging apparatus with drive singal impedance matching circuit is formed, more close to standard signal waveform.Thus by this drive signal waveform supply CCD image unit, based on this drive singal, CCD image unit can obtain good image.
See Fig. 1, it is depicted as and arranges the Handheld endoscope that such scheme forms CCD electronic imaging apparatus.Because such scheme forms that CCD electronic imaging apparatus structure is simple and image quality is high, the Handheld endoscope formed thus, internal structure will be had compact, stable and reliable for performance and image quality high.
Below in conjunction with specific embodiment, set forth the solution of the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
Embodiment 1
Shown in Figure 5, this example provides a kind of split type endoscope, this split type endoscope comprises endoscope body 10, endoscope's display and control main body 20 and above-mentioned CCD electronic imaging apparatus, and endoscope body 10 is made up of leading section 11, insertion section 12 and operating portion 13.
Endoscope body 10 with endoscope display and control main body 20 is arranged respectively the adapter 71 and 72 be connected for realizing both.
Front wheel driving module 40 in CCD electronic imaging apparatus connects front end CCD image unit 30 and is placed in endoscope body leading section 11, drive singal impedance matching circuit 41 is set in front wheel driving module 40, matches for the characteristic impedance and load impedance realizing drive singal transmission receiving terminal cable.
Image procossing in CCD electronic imaging apparatus and signal driver module 50 are arranged in endoscopic procedure portion 13, its outfan connects with the adapter 71 on endoscope body 10, and the cable 80 by being arranged on endoscope insertion part 12 between its outfan with front wheel driving module 40 is connected.
This image procossing and signal driver module 50 are transferred to front wheel driving module 40 for generating drive singal via cable 80, receive front wheel driving module 40 simultaneously and transmit via cable 80 the signal of video signal of coming, and carry out the video signal of image procossing output display.
The display module 60 of CCD electronic imaging apparatus is arranged in endoscope's display and control main body 20, and the input of this module connects with the adapter 72 in endoscope display and control main body 20, and its outfan is connected with the display screen 21 in endoscope display and control main body 20.
This display module 60 receives the video signal of image procossing and signal driver module 50 output by the adapter on control subject 20 and shows endoscopic images by display screen 21.
Embodiment 2
See Fig. 6, it is depicted as the structural representation of the integrated endoscope provided in this example.
As seen from the figure, the endoscope of this integral type comprises endoscope body 10, endoscope's display and control main body 20 and CCD electronic imaging apparatus provided by the invention, endoscope body 10 and endoscope's display and control main body 20 integrated setting, form the agent structure of whole endoscope.This endoscope body 10 is made up of leading section 11, insertion section 12 and operating portion 13.CCD electronic imaging apparatus entirety is placed in by endoscope body 10 with the main body of the integrated endoscope formed of display and control main body 20 of endoscope.Front wheel driving module 40 in this CCD electronic imaging apparatus connects front end CCD image unit 30 and is placed in endoscope body leading section 11, drive singal impedance matching circuit 41 in front wheel driving module 40 matches for the characteristic impedance and load impedance realizing drive singal transmission receiving terminal cable, form high-quality drive signal waveform with this, and supply CCD image unit 30.
Image procossing in CCD electronic imaging apparatus and signal driver module 50, display module 60 are all arranged in endoscope's display and control main body 20.
Wherein, image procossing and signal driver module 50 are connected front wheel driving module 40 by being located in operating portion 13 with the cable 80 in endoscope insertion part 12, and drive connection display module 60.
Display module 60 is connected with the display screen 21 in endoscope display and control main body 20.
Thus, image procossing and signal driver module 50 generate drive singal and are transferred to front wheel driving module 40 via cable 80, receive front wheel driving module 40 simultaneously and transmit via cable 80 the signal of video signal of coming, and carry out the video signal of image procossing output display; Display module 60 is for receiving the video signal of image procossing and signal driver module 50 output and showing endoscopic images by display screen 21.
Now, endoscope body 10 and endoscope's display and control main body 20 are formed in one structure, inseparable.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. a CCD electronic imaging apparatus, it is characterized in that, described imaging device comprises front wheel driving module, image procossing and signal driver module, display module, described front wheel driving module drive connects CCD image unit, described image procossing and signal driver module connect front wheel driving module by cable, and connect with described display module; Wherein said front wheel driving module is also provided with drive singal impedance matching circuit, and described drive singal impedance matching circuit is for mating characteristic impedance and the load impedance of cable.
2. a kind of CCD electronic imaging apparatus according to claim 1, is characterized in that, the impedance matching mode in described drive singal impedance matching circuit is coupling in parallel, and parallel resistance equals the characteristic impedance of cable.
3. a kind of CCD electronic imaging apparatus according to claim 1, is characterized in that, described drive singal is the horizontal Timing driver signal and pixel reset signal that frequency is the highest.
4. a kind of CCD electronic imaging apparatus according to claim 1, it is characterized in that: described image procossing and signal driver module comprise signal generator and signal processor, described signal generator is for generating drive singal and via cable transmission to front wheel driving module, and the signal of video signal that described signal processor is used for front wheel driving module transfer comes is processed into video signal and is transferred to display module.
5. an endoscope, described endoscope comprises endoscope body and endoscope's display and control main body, it is characterized in that, described endoscope also comprises the CCD electronic imaging apparatus according to any one of Claims 1-4.
6. endoscope according to claim 5, it is characterized in that, front wheel driving module in CCD electronic imaging apparatus, image procossing and signal driver module are all arranged in endoscope body, and the display module in CCD electronic imaging apparatus is arranged in endoscope's display and control main body.
7. endoscope according to claim 5, it is characterized in that, front wheel driving module installation in CCD electronic imaging apparatus is in endoscope body, and the image procossing in CCD electronic imaging apparatus and signal driver module, display module are all arranged in endoscope's display and control main body.
8. the endoscope according to claim 5 or 6, is characterized in that, described endoscope body is connected by adapter with endoscope display and control main body.
9. the endoscope according to claim 5 or 7, is characterized in that, described endoscope body and endoscope's display and control main body are formed in one structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004931.3A CN104545773A (en) | 2015-01-06 | 2015-01-06 | CCD electronic imaging device and endoscope thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004931.3A CN104545773A (en) | 2015-01-06 | 2015-01-06 | CCD electronic imaging device and endoscope thereof |
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| Publication Number | Publication Date |
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| CN104545773A true CN104545773A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510004931.3A Pending CN104545773A (en) | 2015-01-06 | 2015-01-06 | CCD electronic imaging device and endoscope thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025643A (en) * | 2016-01-28 | 2017-08-08 | 王行环 | Electrosurgical generator impedance and digital image recognition system under a kind of sight glass |
| CN107979721A (en) * | 2017-11-23 | 2018-05-01 | 敦朴光电(东莞)有限公司 | Endoscope and its image processing system |
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| US4867137A (en) * | 1987-03-19 | 1989-09-19 | Olympus Optical Co., Ltd. | Electronic endoscope |
| JPH0234140A (en) * | 1988-07-26 | 1990-02-05 | Olympus Optical Co Ltd | Electronic endoscope device |
| JP2001326417A (en) * | 2000-05-18 | 2001-11-22 | Nec Corp | Driver circuit for laser diode |
| CN201360295Y (en) * | 2009-02-24 | 2009-12-09 | 北京空间机电研究所 | Ultra-long linear array CCD drive for spatial multi-spectral remote sensor |
| WO2011004771A1 (en) * | 2009-07-06 | 2011-01-13 | オリンパスメディカルシステムズ株式会社 | Signal output substrate and endoscope |
| JP2011010855A (en) * | 2009-07-02 | 2011-01-20 | Hoya Corp | Signal transmitter |
| CN102769442A (en) * | 2011-05-05 | 2012-11-07 | 苹果公司 | Driver with impedance control |
| CN102893598A (en) * | 2010-08-09 | 2013-01-23 | 奥林巴斯医疗株式会社 | Impedance matching device and endoscope provided with same |
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2015
- 2015-01-06 CN CN201510004931.3A patent/CN104545773A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867137A (en) * | 1987-03-19 | 1989-09-19 | Olympus Optical Co., Ltd. | Electronic endoscope |
| JPH0234140A (en) * | 1988-07-26 | 1990-02-05 | Olympus Optical Co Ltd | Electronic endoscope device |
| JP2001326417A (en) * | 2000-05-18 | 2001-11-22 | Nec Corp | Driver circuit for laser diode |
| CN201360295Y (en) * | 2009-02-24 | 2009-12-09 | 北京空间机电研究所 | Ultra-long linear array CCD drive for spatial multi-spectral remote sensor |
| JP2011010855A (en) * | 2009-07-02 | 2011-01-20 | Hoya Corp | Signal transmitter |
| WO2011004771A1 (en) * | 2009-07-06 | 2011-01-13 | オリンパスメディカルシステムズ株式会社 | Signal output substrate and endoscope |
| CN102893598A (en) * | 2010-08-09 | 2013-01-23 | 奥林巴斯医疗株式会社 | Impedance matching device and endoscope provided with same |
| CN102769442A (en) * | 2011-05-05 | 2012-11-07 | 苹果公司 | Driver with impedance control |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025643A (en) * | 2016-01-28 | 2017-08-08 | 王行环 | Electrosurgical generator impedance and digital image recognition system under a kind of sight glass |
| CN107979721A (en) * | 2017-11-23 | 2018-05-01 | 敦朴光电(东莞)有限公司 | Endoscope and its image processing system |
| CN107979721B (en) * | 2017-11-23 | 2020-10-23 | 敦朴光电(东莞)有限公司 | Endoscope and image processing system thereof |
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Application publication date: 20150429 |