CN1510950A - Multifunctional image processor - Google Patents
Multifunctional image processor Download PDFInfo
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- CN1510950A CN1510950A CNA021585253A CN02158525A CN1510950A CN 1510950 A CN1510950 A CN 1510950A CN A021585253 A CNA021585253 A CN A021585253A CN 02158525 A CN02158525 A CN 02158525A CN 1510950 A CN1510950 A CN 1510950A
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Abstract
An image processor used in digital camera unit, includes a LCD interface connected with LCD module, the image processor can implement controlling the LCD module and data transmitting with LCD module through this LCD interface. The channel formed between LCD interface and host interface of connecting module of host machine is a transparent channel, the host machine module is connected with LCD module ; the said image processor also includes a independent MCU (micro control unit), when this image processor is used in a independent digital camera, this MCU can be a replacement of main control unit in host machine. It also can used in the mobile communication terminal with video capture, and no need to take a big change.
Description
Technical field
The present invention relates to a kind of image processor that is used for digital camera, particularly a kind ofly both can be used for having on the mobile communication terminal of digital camera, can be used for the multifunctional image processor on the independent digital camera again.
Background technology
Along with the develop rapidly of digital image technology, various digital vedio recordings or image processing product have generally entered the lives of the people.Of a great variety as the image processor of digital image field core technology, function also strengthens day by day.
Not only be useful on the image processor on the independent digital camera, also have and be applicable to the mobile communication terminal that has inserted camera such as the image processor on mobile phone or the individual palmtop PC, it not only can help mobile phone to realize the demonstration of image, more can carry out image acquisition and carry out multimedia communication by mobile phone, this compound mobile phone has improved the efficient of using, and also is very easy to the user.
But image processor of the prior art also exists such defective:
Be used on the mobile communication terminal that image processor and being used on the independent digital camera has inserted camera image processor not the able person easily realize exchanging and be general, the production firm of digital product often needs to adopt respectively different image processors on different products, when a kind of image processor will be used on another product, usually will do sizable change, this has just brought the not convenient of extreme.
In addition, it is structured flowchart that has the mobile phone of image processor in the prior art that the image processor that is used for having the mobile phone of camera also has other shortcoming: Fig. 1, it normally utilizes baseband module 30, controls the running of photographing module 20 ' and LCD module 10 '.No matter be to browse photographing module 20, the video flowing of input, still baseband module 30 ' instruction photographing module 20 ' is caught image, or the processing after catching, photographing module 20 ' (comprises camera lens, optical pickocff and dsp chip--digital signal processing chip) image of catching all needs to transmit this image again and show to LCD module 10 ' (comprising LCD display, lcd controller and LCD drive part) through baseband module 30 '.And the realization of each process also all needs master controller in the baseband module 30 ' to control and coordinate, and the image processor in the photographing module 20 ' does not play effect too, the burden that this has increased baseband module 30 ' has undoubtedly caused the load of baseband module excessive; And because the image that photographing module 20 ' is caught need just be sent to LCD module 10 ' through behind the baseband module 30 ', so the delay of several two field pictures is arranged between LCD module 10 ' last image that shows and real screen.
The existence of these defectives makes said apparatus can not reach gratifying result of use in practical operation, so the solution of new image processor is by demand.
Summary of the invention
The purpose of this invention is to provide a kind of image processor of avoiding above-mentioned deficiency, for this purpose, the present invention proposes such solution:
In this image processor, except that some general functional modules, it also comprises a LCD interface that links to each other with the LCD module, image processor can by this LCD interface directly realize to the control of LCD module and and the LCD module between transfer of data; And the passage that forms between the link block host interface of this LCD interface and image processor and main frame is a transparent passage, and the host interface of host module in image processor directly links to each other with the LCD module with the formed transparent channel of LCD interface.
So, the user is when carrying out preview to video flowing and when not catching, and view data can be passed through host module, but directly carries out transport flow between photographing module and LCD module, has reduced the unnecessary burden of host module; In addition, host module is when control LCD module is carried out some basic operations that do not need the photographing module participation such as menu demonstration, only promptly can realize as the basic running of controlling the LCD module in the past convenient and simplely, and photographing module does not carry out unnecessary running by the passage in the described image processor.
In addition, in image processor of the present invention, also comprise an independently MCU (microcontroller), when image processor of the present invention is used to an independent digital camera, this MCU just can be used as the substitute of master controller in the main frame, come controlling to image processor such as basic operations such as automatic focusing, white balances, that is to say, in the host CPU in not having host module, the image processor that has this MCU can be used as an independent camera chip fully and moves.
With respect to prior art, the invention has the advantages that:
At first, based on design disclosed in this invention, described image processor can be used on the independent digital camera, also can be used to have on the mobile communication terminal of inserted camera, and unnecessaryly do very cataclysm.
Secondly, when described image processor is used to have on the mobile communication terminal of inserted camera, its advantage also is tangible: photographing module makes the delay phenomenon between display image and the real screen be able to good elimination with directly linking to each other of LCD module, its optimal image of seeing that the user can at random catch; Structural design provided by the present invention makes baseband module reduce unnecessary load, has improved its utilance; In addition, mobile communication terminal when conversing substantially, finish target image catch with transfer operation and be independent of each other also be utilize image processor provided by the present invention can realize.
Above and other objects of the present invention, feature and advantage are from below in conjunction with accompanying drawing be not will become more obvious the specific descriptions of certain embodiments.
Description of drawings
Fig. 1 is structured flowchart that has the mobile phone of image processor in the prior art;
Fig. 2 is a block diagram that has the mobile phone embodiment of image processor of the present invention;
Fig. 3 is the theory diagram of image processor 23 of the present invention;
The simple schematic block diagram of baseband module among Fig. 4 embodiment of the present invention;
Fig. 5 is the data channel schematic diagram of image processor of the present invention when carrying out the picture preview mode;
Fig. 6 is the data channel schematic diagram of image processor of the present invention when carrying out the still image acquisition mode;
Fig. 7 is that image processor of the present invention carries out picture and catches the data channel schematic diagram of back during display mode;
Fig. 8 is the data channel schematic diagram of image processor of the present invention when carrying out the video capture pattern.
Embodiment
In the following description, known function or structure will no longer describe in detail, to avoid there be unnecessary obscuring with content of the present invention.
Fig. 2 is a block diagram that has the mobile phone embodiment of image processor of the present invention, referring to Fig. 2: for photographing module 20, optical pickocff 22 will be converted to electrical picture signal from the light image that camera lens 21 is caught, image processor 23 electrical picture signals from optical pickocff 22 inputs are converted to digital signal and will change after digital signal pass to LCD module 10 or baseband module 30 after further handling.
Baseband module 30 is cores of whole device, and its control mobile device whole operation links to each other with SIM card (Subscriber Identity Module Subscriber Identity Module), memory module 60, keyboard portion 70, audio-frequency module 90 and power module 50 etc.Fig. 4 is the simple schematic block diagram of baseband module among this embodiment, as shown in Figure 4, wherein comprise: a DSP (digital signal processor) 31, by a CPU32 back work, it is used to optimize decision-directed sign indicating number (decision-directed code) and perception, control external event; What be connected with DSP31 has a RF interface 33 and an audio interface 34, and RF interface 33 links to each other with RF module 40, and audio interface 34 is connected with loud speaker 92 with microphone 91 in the audio-frequency module 90, controls the realization of its operate as normal; Flash module 36 is stored all microprocessor codings; Static memory (SRAM) module 35 is as buffer memory, register and intermediate store.A power management part 37, it links to each other with power module 50, manages the power configuration of whole device.
Memory module 60 is used for storing data that mobile device need store and the view data that captures from photographing module 20.
Keyboard portion 70 is man-machine interface interfaces of user and this device, and the user is used for finishing the various operations that need.
The voice signal of the coding that audio-frequency module 90 demodulation receive from RF module 40 and the voice signal that demodulation is provided be to loud speaker 92, and coding from the electroacoustic signal of microphone 91 and voice signal through coding is provided to RF module 40.
LCD module 10 comprises LCD display 11, lcd controller 13 and two lcd drivers 12.The LCD module is used to show the basic operation state of camera phone, and the image that camera is caught or the image file in the phone storage device show.
RF (radio frequency) module 40 comprises the RF processor mainly input rf signal handled, be the RF conversion of signals IF (intermediate frequency) processor of IF signal and be the IF conversion of signals baseband processor of baseband module 30 accessible base-band bit-streams.In addition, although not shown, RF module 40 is divided into receiver and reflector.Receiver in the RF module 40 amplifies the RF signal of input and suppresses noise, and through the IF processor amplifying signal is converted to digital signal.The digital signal of conversion is provided for baseband module 30.Reflector in the RF module 40 is amplifying according to the signal after the band modulation of providing from baseband module 30, and launches this signal through the antenna part of not describing.
Fig. 3 is the theory diagram of image processor 23 of the present invention, as shown in Figure 3, in this mobile communications device, the host interface 231 of baseband module 30 in image processor 23 links to each other with LCD module 10 with LCD interface 238 formed transparent channels, so, when not needing camera operation, baseband module 30 can also be controlled the basic running of LCD module like before convenient and simplely, and this moment, the camera function of image processor 23 did not carry out work.
In addition, photographing module 20 is by carrying out image and transfer of data between baseband module 30 and the LCD module 10, but directly directly links to each other with LCD module 10 by the LCD interface 238 in the image processor 23; Host CPU 32 in the baseband module 30 is controlled the work of image processor 23 by host interface 231, order and data that host interface 231 receives from baseband module.The RGB/YUV view data that SIF (sensor interface sensor interface) and ISP (processing of image signal processing picture signal) module 232 receives from CCD/CMOS imageing sensor 22 is carried out such as some algorithm operatings such as white balance, color correction, gamma correction, interpolation correction this view data.Sizer (image size manager) 234 can change the resolution from the image of imageing sensor 22, and it can provide the different resolution that is fit to image preview and seizure.Although not shown, sizer (big or small manager) is divided into Previewsizer (preview image size manager) and Capture sizer (catching image size manager) two parts.Wherein MCU (microcontroller) 240 can controlling such as basic operations such as automatic focusing, white balances image processor 23, in the host CPU 32 in not having baseband module 30, the image processor 23 that has MCU (microcontroller) 240 can be used as an independent camera chip fully and moves.
JPEG (joint image coding expert group) coding and decoding unit 236, can will perhaps the jpeg file decompress(ion) be condensed to the yuv format file from the yuv format data image signal boil down to jpeg file of Sizer module 234 inputs according to the international standard of compressed color picture.Frame buffer 235 is used for storing the interim view data of a frame.GE (graphics engine image engine) 245 is that a special logic processor is used for two dimensional image operations such as execute bit block movement, setting-out, raster manipulation.
YUV-RGB transducer 242 carries out the conversion between YUV and the RGB picture format.Itself and Dither-ing (color depth processing) part 247 are fit to the LCD module to view data together and carry out the format analysis processing that image shows.Memory interface 239 is used for connecting flash memory module 60, carries out the storage of data.Also comprise SPI interface 230 in addition in this device, and link to each other with internal bus with system controller.
When carrying out such as Jepg coding and decoding algorithm process, processing to pixel is to be undertaken by piece, and when being carried out sharpening, noise removing, image carries out with the line pixel at other, Sizer line buffer 244 and Jepg line buffer 248 are exactly for such reason, because of the important expression part of non-the present invention, so seldom lay down a definition herein.
Image processor of the present invention can be used as the picture processing chip of independent digital camera or inserted digital camera.When as an independent digital camera chip time, there is not outside CPU, MCU240 is exactly a system controller.When as the picture processing chip of inserted digital camera on mobile communication terminal, the host CPU on the base band is controlled the running of this image processor.
When image processor of the present invention has four mode of operations as the picture processing chip camera operation of independent digital camera or inserted digital camera and processing the time: preview mode, the still image acquisition mode, catch back display mode and Video Capture pattern.
In preview mode, the video flowing that continues is displayed on the LCD display 11, the user can regulate on the LCD display 11 just demonstrating the different zoom rate and the resolution of image, when the user sees appropriate screen, can catch this image by operation such as button to keyboard portion 70.Shown in the data channel schematic diagram when carrying out the picture preview as Fig. 5 device of the present invention, image processor 23 receives from the view data of imageing sensor 22 and to its processing of being correlated with by SIF/ISP module 232, change the resolution of image by Preview sizer (preview image size manager) 234 then, carry out the color depth processing of color space conversion and Dithering part 247 through YUV-RGB transducer 242 after, image is stored in frame buffer 235, and GE245 can make some hardware graphicses to image and quicken to handle.Last lcd controller 13 and LCD interface 238 are read view data and are sent LCD module 10 to and is used for showing from frame buffer 235.
In the still image acquisition mode, after the selected appropriate screen of user, he can catch a two field picture.Data channel schematic diagram when carrying out the still image acquisition mode as Fig. 6 image processor of the present invention.Host CPU or MCU240 send capture command, image processor can be caught the next frame image, when the user capture a two field picture after, at first handle through SIF/ISP module 232, Sizer module 234 changes the resolution of image according to user's selection then, JPEG coding and decoding unit 236 compresses image and is stored in the frame buffer 235, send the instruction of transmitted image at baseband module 30 after, this jpeg image is sent out.
Image processor of the present invention has catches the back Presentation Function, in catching the back display mode, image in the frame buffer 235 is a jpeg image, image that it is caught by this device by the user or the image that sends by host CPU, after decompressing through JPEG coding and decoding unit 236, image is converted into the yuv data form, after carrying out color space conversion and Dither-ing (color depth processing) color depth processing partly by the resolution of sizer234 change image and through YUV-RGB transducer 242 then, image is stored in frame buffer 235, sends LCD module 10 to through LCD interface 238 then and shows.Its data channel is referring to Fig. 7.
In the Video Capture pattern, image processor of the present invention can be caught QCIF/CIF MJEPG video snip and is stored in the frame buffer 235, its data channel is similar with the still image trap mode, the resolution of different is this image is very little, and has multiframe JEPG image and be positioned in the frame buffer 235.Its data channel is referring to Fig. 8.
Multifunctional image processor of the present invention, be not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.
Claims (7)
1, a kind of image processor that is used for digital camera, at least comprise some such as the host interface (231) of general functional module such as SIF/ISP module (232), Sizer (234) with the host module that is used to link to each other, it is characterized in that: also comprise a LCD interface (238) that links to each other with LCD module (10), image processor can by this LCD interface (238) directly realize to the control of LCD module (10) and and LCD module (10) between transfer of data.
2, image processor according to claim 1, it is characterized in that, the passage that forms between host interface in the image processor (231) and the LCD interface (238) is a transparent passage, and host module directly links to each other with LCD module (10) through formed transparent channel.
3, image processor according to claim 1 is characterized in that, described image processor also further comprises the MCU microcontroller (240) that a may command photographing module independently carries out operate as normal.
4, image processor according to claim 3 is characterized in that, when image processor of the present invention was used to an independent digital camera, described MCU (240) just replaced host CPU as the effector of system.
5, image processor according to claim 4 is characterized in that, described MCU (240) can controlling such as basic operations such as automatic focusing, white balances image processor.
6, according to claim 1 or 3 described image processors, it is characterized in that, comprise a sizer (big or small manager) (234) on the described video processing module of described image processor (23) and be used to change the resolution of image.
7, mobile communication terminal according to claim 6, it is characterized in that, sizer (big or small manager) (234) is divided into Preview sizer (preview image size manager) and Capturesizer (catching image size manager) two parts, its shared same hardware resource is carried out different functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021585253A CN1295939C (en) | 2002-12-25 | 2002-12-25 | Multifunctional image processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021585253A CN1295939C (en) | 2002-12-25 | 2002-12-25 | Multifunctional image processor |
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| Publication Number | Publication Date |
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| CN1510950A true CN1510950A (en) | 2004-07-07 |
| CN1295939C CN1295939C (en) | 2007-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021585253A Expired - Fee Related CN1295939C (en) | 2002-12-25 | 2002-12-25 | Multifunctional image processor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592450A (en) * | 2017-08-30 | 2018-01-16 | 珠海市君天电子科技有限公司 | A kind of media data processing method and device |
| WO2018126861A1 (en) * | 2017-01-04 | 2018-07-12 | 京东方科技集团股份有限公司 | Drive circuit for display screen, display method and display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168023C (en) * | 1999-12-09 | 2004-09-22 | 宏碁股份有限公司 | Laptop computer with camera |
| CN1276675C (en) * | 2002-12-17 | 2006-09-20 | 北京中星微电子有限公司 | Mobile communication terminal device with pickup head |
| CN2603442Y (en) * | 2002-12-25 | 2004-02-11 | 北京中星微电子有限公司 | Multi-function image processor |
-
2002
- 2002-12-25 CN CNB021585253A patent/CN1295939C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018126861A1 (en) * | 2017-01-04 | 2018-07-12 | 京东方科技集团股份有限公司 | Drive circuit for display screen, display method and display device |
| US10621902B2 (en) | 2017-01-04 | 2020-04-14 | Beijing Boe Optoelectronics Technology Co., Ltd. | Driving circuit for display screen with adjustable color depth bit value, display method and display device |
| CN107592450A (en) * | 2017-08-30 | 2018-01-16 | 珠海市君天电子科技有限公司 | A kind of media data processing method and device |
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| Publication number | Publication date |
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| CN1295939C (en) | 2007-01-17 |
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