CN205453886U - Formation of image subassembly - Google Patents
Formation of image subassembly Download PDFInfo
- Publication number
- CN205453886U CN205453886U CN201620268894.7U CN201620268894U CN205453886U CN 205453886 U CN205453886 U CN 205453886U CN 201620268894 U CN201620268894 U CN 201620268894U CN 205453886 U CN205453886 U CN 205453886U
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- image
- circuit
- image processing
- processing circuit
- signal acquisition
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Abstract
The utility model discloses a formation of image subassembly, including camera lens, image signal acquisition circuit and image processing circuit, image signal acquisition circuit with the image processing circuit separation adopts the connector to connect between the two. Image processing circuit includes emitter follower circuit, image signal acquisition circuit includes filtering and intensifier circuit. Adopt formation of image subassembly, can settle image signal acquisition circuit and image processing circuit respectively according to service conditions, adopt emitter follower circuit and reliable filtering and intensifier circuit, effectively alleviateed the external interference that comes from in the cable transmission course and to image quality's influence, reduced the interference of clutter signal, solved because of prolonging between the two the interference problem that the circuit brought for the image is compared equally clearly, stably to final display's image with integral type formation of image subassembly.
Description
Technical field
This utility model relates to a kind of image-forming assembly, especially relates to the image-forming assembly that a kind of picture signal collection separates with image processing circuit.
Background technology
The most most of image-forming assembly at present, uses imageing sensor and image processing circuit design pattern on same circuit board, as shown in Figure 1.Such design makes the volume of image-forming assembly, slightly shows huge due to the existence of complicated image processing circuit.At the occasion of limited space, the product using imageing sensor and image processing circuit to design on same circuit board, it is not easy to installation and the debugging of product.If it is desired that small product size miniaturization, it is necessary for simplifying image processing circuit, but image quality decrease while do so, can be made.
Utility model content
In order to solve the above-mentioned technical problem that prior art exists, the utility model proposes a kind of image-forming assembly, including camera lens, picture signal Acquisition Circuit and image processing circuit.Picture signal Acquisition Circuit includes that imageing sensor, described imageing sensor are arranged close to the position of camera lens, and its photosurface overlaps with the focussing plane of described camera lens, for being converted into raw video signal by the optical signal of camera lens.Described image processing circuit includes power supply, and for providing power supply signal to picture signal Acquisition Circuit and image processing circuit, described image processing circuit is for being converted into video standard signal by described raw video signal.Described picture signal Acquisition Circuit separates with described image processing circuit, uses adapter to connect between the two.Described picture signal Acquisition Circuit separates with described image processing circuit, when to make the image-forming assembly of high quality graphic be to adapt to compact narrow space requirement, only the picture signal Acquisition Circuit of small volume can be installed near camera lens and debug, gather optical signal, and image processing circuit can be placed on other any locus that side is the most remote.
Described adapter is preferably made up of many cables connecing, for transmitting the various signals between picture signal Acquisition Circuit and image processing circuit, including power supply, video, row, field, clock, the signal such as reset.Power supply signals etc. are passed through cable transmission to picture signal Acquisition Circuit side by image processing circuit side.Video signals etc. are then passed through cable transmission to image processing circuit side by picture signal Acquisition Circuit side.
But use cable to connect the mode of imageing sensor and image processing circuit, can be because of the loss in signal transmission and the introducing of extraneous interference signal so that the effect of video signal transmission is deteriorated, and finally obtain is image blurring unclear.To this end, the image processing circuit of image-forming assembly described in the utility model further comprises emitter follower circuit, for receiving the described imageing sensor raw video signal via cable transmission.Emitter follower circuit increases the input impedance between imageing sensor key, sensitive signal to image processing circuit, the impedance that transmission signal cable introduces is compared with the input impedance of emitter follower circuit and is substantially negligible, thus reaches to weaken the adverse effect that cable transmission signal brings；Emitter follower circuit can also strengthen the drive belt loading capability of useful signal, improves the collection service efficiency of useful signal, thus ensures that stable image quality is constant.Described emitter follower circuit preferably includes a field effect transistor and an audion, described raw video signal inputs from the base stage of described field effect transistor, export the base stage to described audion from the emitter stage of field effect transistor, and export enhanced raw video signal from the emitter stage of described audion.
According to image-forming assembly described in the utility model, described picture signal Acquisition Circuit also includes filtering and intensifier circuit, for power supply signal is filtered, to weaken the interference of the loss on circuit and outside noise, the impact that on isolation circuit, noise brings so that the video signal of described imageing sensor output greatly reduces the impact of clutter.Increase driving and the carrying load ability of power supply signal simultaneously, reduce the loss on the circuit brought owing to separating prolongation to design and driving force weakens；Enhance the reliability of front end photosensitive-member input signal, thus ensure and can collect stable raw video signal.
The occasion being restricted in space, uses image-forming assembly described in the utility model, can dispose picture signal Acquisition Circuit and image processing circuit respectively according to use condition；Simultaneously because have employed emitter follower circuit and filter reliably and intensifier circuit, it is effectively reduced the impact coming from the external disturbance during cable transmission to picture quality, reduce the interference of noise signal, solve the interference problem brought because extending circuit between the two, enhance the drive belt loading capability of power supply signal so that the image of final display image compared with integral type image-forming assembly is clear equally, stable.
Accompanying drawing explanation
Fig. 1 is the integral type image-forming assembly of prior art；
Fig. 2 is separate type image-forming assembly described in the utility model；
Fig. 3 is two-stage emitter follower circuit schematic diagram.
In figure: 1, camera lens, 2, picture signal Acquisition Circuit, 21, imageing sensor, 22, filtering and intensifier circuit, 3, adapter, 4, image processing circuit, 41, two-stage emitter follower circuit, 42, power supply.
Detailed description of the invention
Describe this utility model below in conjunction with the accompanying drawings in detail as follows:
As shown in Figure 2, according to image-forming assembly described in the utility model, including camera lens 1, picture signal Acquisition Circuit 2 and image processing circuit 4, connected by adapter 3 between picture signal Acquisition Circuit 2 and image processing circuit 4, so that the installation of camera lens 1 and picture signal Acquisition Circuit 2 is no longer limited by the excessive bulk of image processing circuit 4, but may be mounted in less space, and it is not easy to be exploited.Adapter 3 uses many cables and connects composition, is used for transmitting various signal, including power supply, video, row, field, clock, the signal such as reset.
Wherein picture signal Acquisition Circuit 2 includes imageing sensor 21 and filtering and intensifier circuit 22.Optical signal by the perception of described imageing sensor 21 and changes into raw video signal Video through described camera lens 1.Power supply signal is filtered and strengthens by filtering and intensifier circuit 22, drives and carrying load ability increasing it.Raw video signal Video is transferred to follow-up image processing circuit 4 by cable 3.Described raw video signal Video electric current is less, thus effectively reduce the interference of the loss on circuit and outside noise, completely cut off the impact that noise on circuit brings, make the raw video signal Video separated on cable can be delivered to subsequent process circuit correctly, accurately, timely under electromagnetic radiation environment complicated and changeable, solve the various noise jamming introduced owing to image acquisition circuit separates with image processing circuit.
Image processing circuit 4 includes emitter follower circuit 41 and power supply 42.Wherein emitter follower circuit 41 is two-stage emitter follower circuit, as it is shown on figure 3, be made up of field effect transistor Q001 and audion Q002.The video signal transmitted on cable 3 inputs from the base stage of field effect transistor Q001, exports enhanced video signal from the emitter stage of audion Q002, through the output of image processing circuit synthetic standards video signal to the display device that can receive video standard signal.The input impedance of described emitter follower circuit 41 is high, and output impedance is low, thus the electric current asked for from cable 3 is little and also carrying load ability is strong；And use described emitter follower circuit 41 to connect picture signal Acquisition Circuit 2 and image processing circuit 4, it is directly connected to picture signal Acquisition Circuit 2 and image processing circuit 4 compared to using cable, effectively reduce and between circuit, be joined directly together brought harmful effect, serve good cushioning effect, be effectively increased the definition of video.Power supply 42 is for providing power supply signal to other parts of picture signal Acquisition Circuit 2 and image processing circuit 4.
Certainly, embodiment described above only have expressed a kind of embodiment of the present utility model, and it describes more concrete and detailed, but therefore can not be not understood as the restriction to this utility model the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (5)
1. an image-forming assembly, including camera lens, picture signal Acquisition Circuit and image processing circuit, described picture signal Acquisition Circuit includes imageing sensor, described imageing sensor is arranged close to the position of camera lens, its photosurface overlaps with the focussing plane of described camera lens, for being converted into raw video signal by the optical signal of camera lens；Described image processing circuit includes power supply, for providing power supply signal to described picture signal Acquisition Circuit and image processing circuit, described raw video signal is converted into video standard signal by described image processing circuit, it is characterized in that: described picture signal Acquisition Circuit separates with described image processing circuit, use adapter to connect between the two.
Image-forming assembly the most according to claim 1, it is characterised in that: described adapter is many cables and connects composition.
Image-forming assembly the most according to claim 1, it is characterised in that: described image processing circuit includes emitter follower circuit, is used for receiving described raw video signal.
Image-forming assembly the most according to claim 3, it is characterized in that: described emitter follower circuit is two-stage emitter follower circuit, including a field effect transistor and an audion, described raw video signal inputs from the base stage of described field effect transistor, export the base stage to described audion from the emitter stage of field effect transistor, and export enhanced raw video signal from the emitter stage of described audion.
Image-forming assembly the most according to claim 1, it is characterized in that: described picture signal Acquisition Circuit includes filtering and intensifier circuit, its one end is connected with described imageing sensor, the other end is connected with image processing circuit by described adapter, for described power supply signal is filtered, and strengthen its driving and carrying load ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268894.7U CN205453886U (en) | 2016-04-05 | 2016-04-05 | Formation of image subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268894.7U CN205453886U (en) | 2016-04-05 | 2016-04-05 | Formation of image subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205453886U true CN205453886U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620268894.7U Expired - Fee Related CN205453886U (en) | 2016-04-05 | 2016-04-05 | Formation of image subassembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN205453886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022447A (en) * | 2017-12-22 | 2019-07-16 | 豪威科技股份有限公司 | The method of imaging system, output line circuit and its fast and stable |
-
2016
- 2016-04-05 CN CN201620268894.7U patent/CN205453886U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022447A (en) * | 2017-12-22 | 2019-07-16 | 豪威科技股份有限公司 | The method of imaging system, output line circuit and its fast and stable |
| CN110022447B (en) * | 2017-12-22 | 2020-05-12 | 豪威科技股份有限公司 | Imaging system, output line circuit and rapid stabilizing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20170405 |