CN1878278A - Apparatus and method for carrying out video processing - Google Patents
Apparatus and method for carrying out video processing Download PDFInfo
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- CN1878278A CN1878278A CN 200610099312 CN200610099312A CN1878278A CN 1878278 A CN1878278 A CN 1878278A CN 200610099312 CN200610099312 CN 200610099312 CN 200610099312 A CN200610099312 A CN 200610099312A CN 1878278 A CN1878278 A CN 1878278A
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Abstract
The invention relates to a video processing device and relative method. Wherein, said device comprises: an image sensor, a VIU (video interface) and an ARM (advanced simple instruction set microprocessor). Said method comprises: the image sensor, based on preset data transmission method, transmits the collected image data to VIU; said VIU, based on the data transmission method, outputs received image data via the data bus. With said invention, the occupancy on the CPU resource can be reduce to improve the image processing speed and reduce the power consumption.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of apparatus and method of carrying out Video processing.
Background technology
The development focus that various multi-functional portable terminals are field of wireless communication in recent years, and shooting is the very important function of modern portable terminal.At present, the mobile phone that has a camera function generally has cell-phone microprocessor SOC (SOC (system on a chip)) chip and imageing sensor SOC chip simultaneously.
Functions such as imageing sensor, original image data processing, the adjustment of image output format that imageing sensor SOC chip is general integrated, they are all provided by special-purpose manufacturer.Imageing sensor SOC chip provides video interface, this video interface according to certain video protocols to cell-phone microprocessor SOC chip output digital image.
The data image signal that cell-phone microprocessor SOC chip must provide special interface to pass over reception imageing sensor SOC chip on the one hand, must provide good displaying scheme on the other hand, in order to quickly and efficiently the data image signal that receives is presented on the mobile phone screen, perhaps be stored in the memory, to finish camera function.
A kind of multi-module mobile terminal carries out the scheme of Video processing and is in the prior art: ARM (advanced reduced instruction set computer microprocessor) Video processing scheme.Realize this scheme system structural representation as shown in Figure 1.The framework that PXP (PrimeXsys Platform) kit that adopts ARM company to provide provides, this framework only contains LCD controller, does not have special video input module.Therefore this scheme must all adopt arm processor to finish image input and image processing.
System shown in Figure 1 adopts GPIO (general I/O) to receive the view data that imageing sensor (such as CMOS/CCD sensor, i.e. camera) passes over, and GPIO gives ARM with the view data that receives and handles.After ARM disposes, give LCD (LCD) controller, lcd controller control LCD panel display image with the pictorial data that needs show; Give RAM controller with the pictorial data that needs are stored, the RAM controller writes RAM with this view data and preserves.RAM can be nonvolatile, as: Flash (flash memory) RAM etc.
The shortcoming of above-mentioned scheme of the prior art is:
1, flow for displaying adopts software mode, and the resource that takies CPU is big, and processing speed is slow, power consumption is big, and the entire system performance is low;
2, image-capable is not strong, and the image pixel of support is low, can not support the business that 2,000,000 pixels are above, can not support MPEG4 well, H.263 wait media function;
3, camera interface function singleness is difficult to the video protocols of supporting that some are special, and the video protocols as ITU (International Telecommunications Union)-types such as R BT.656/601 can't be applied to some special occasions, as visual telephone, television image etc.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of apparatus and method of carrying out Video processing, thereby the image-processing system that can reduce terminal takies the resource of CPU, makes the image processing speed of image-processing system fast, low in energy consumption.
The objective of the invention is to be achieved through the following technical solutions:
A kind of device that carries out Video processing comprises: imageing sensor, video interface unit VIU and advanced reduced instruction set computer microprocessor ARM, wherein:
Imageing sensor: be used for the capturing digital image data, the data mode according to the ARM configuration passes to VIU with the DID that collects;
VIU: be used for data mode, receive the DID that imageing sensor passes over according to the ARM configuration, with this DID output, and to ARM transmission interrupt signal;
ARM: the data mode of configuration image transducer and VIU, the interrupt signal that passes over according to VIU passes to after the DID of VIU output handled and shows or storage device.
Also comprise:
Random access memory ram controller: receive and the three primary colors RGB data or the component yuv data of control VIU output, these RGB data or yuv data are passed to RAM carry out buffer memory.
Also comprise:
Display controller: receive ARM and utilize the random access memory ram controller to read, and RGB data after treatment or that VIU passes over, these RGB data are shown;
Nonvolatile memory: receive ARM and utilize the random access memory ram controller to read, and yuv data after treatment, this yuv data is stored.
Described display controller is: liquid crystal display lcd controller or liquid crystal display module.
Described nonvolatile memory is: flash memory Flash RAM or multimedia storage card MMC or micro harddisk or disk.
A kind of method of carrying out Video processing comprises step:
A, imageing sensor pass to VIU according to the data mode that ARM disposes with the view data that collects;
B, described VIU export by the described view data that data/address bus will receive according to the data mode of ARM configuration.
Described steps A specifically comprises:
Imageing sensor passes to VIU according to the RGB data or the yuv data load mode of ARM configuration with rgb image data or the YUV view data that collects.
Described step B specifically comprises:
VIU passes to lcd controller by data/address bus with the rgb image data that receives according to the RGB data mode of ARM configuration, and lcd controller shows these RGB data.
Described step B also comprises:
Lcd controller is with the RGB metadata cache that receives, ARM reads and converts to the YUV view data with described rgb image data, carry out data processing again, the view data after handling is exported to nonvolatile memory by data/address bus, nonvolatile memory is preserved this view data.
Described data processing comprises: JPEG (joint photographic experts group) JPEG compression or the MPEG of active images expert group compression.
Described step B specifically comprises:
B1, VIU pass to RAM controller by data/address bus with the rgb image data that receives according to the RGB data mode of ARM configuration, and the RAM controller passes to RAM with described rgb image data and carries out buffer memory;
B2, ARM read the rgb image data of buffer memory among the described RAM, and the line data of going forward side by side is handled, and the view data after handling is exported to lcd controller by data/address bus, and lcd controller shows these RGB data.
Described step B specifically comprises:
B3, VIU pass to RAM controller by data/address bus with the YUV view data that receives according to the yuv data load mode of ARM configuration, and the RAM controller passes to RAM with described YUV view data and carries out buffer memory;
B4, ARM read the VIU view data of buffer memory among the described RAM, and the line data of going forward side by side is handled, and the view data after handling is exported to nonvolatile memory by data/address bus, and the view data after nonvolatile memory will be handled is preserved.
Described step B4 also comprises:
ARM reads the YUV view data of buffer memory among the described RAM, and convert the YUV view data of reading to rgb image data, the line data of going forward side by side is handled, and the view data after handling is exported to lcd controller by data/address bus, and the view data after lcd controller will be handled shows.
As seen from the above technical solution provided by the invention, the present invention handles the view data that imageing sensor passes over by adopting VIU (video interface unit), compares with prior art, has following advantage:
1, the present invention has designed a VIU module and has substituted GPIO, has designed the crew-served flow for displaying of software and hardware, and the image processing system that has reduced user terminal takies the resource of CPU, and processing speed is fast, low in energy consumption, the overall performance height of user terminal.
2, strengthened the image-capable of user terminal greatly, the accessible pixel of user terminal is up to 5,000,000, and processing speed can reach 15fps, can support MPEG4, H.263, H.264 wait media function.
3, the camera interface function of scalable user terminal, can make user terminal support the video protocols that some are special, as the video protocols of types such as ITU-R BT.656/601, this special video protocols can be applied to some special occasions, as visual telephone, television image etc.
Description of drawings
Fig. 1 is the structural representation of the system of realization ARM Video processing scheme of the prior art;
Fig. 2 is the structural representation of the embodiment 1 of device of the present invention;
Fig. 3 carries out the concrete process chart of embodiment of the method for Video processing for user terminal of the present invention;
Fig. 4 is the realization schematic diagram of the embodiment 2 of device of the present invention;
Fig. 5 is the realization schematic diagram of the embodiment 3 of device of the present invention;
Fig. 6 is the realization schematic diagram of the embodiment 4 of device of the present invention;
Fig. 7 is the realization schematic diagram of the embodiment 5 of device of the present invention;
Fig. 8 is the structural representation of the multi-module mobile terminal that has camera function of application device of the present invention;
Fig. 9 be multi-module mobile terminal shown in Figure 8 in the structural representation of VIU.
Embodiment
The invention provides a kind of apparatus and method of carrying out Video processing, core of the present invention is: adopt the data mode of VIU according to the ARM configuration, handle the view data that imageing sensor passes over.
Describe device of the present invention in detail below in conjunction with accompanying drawing, the structural representation of the embodiment of device of the present invention as shown in Figure 2.Comprise: VIU, ARM, lcd controller, RAM controller and imageing sensor.
Imageing sensor: be used for the capturing digital image data, support RGB (three primary colors) and YUV (component) data output load mode.Data mode (RGB or YUV) according to the ARM configuration passes to VIU with RGB or the YUV DID that collects.
VIU: be used to receive RGB or the YUV DID that imageing sensor passes over, support four kinds of mode of operations: direct camera (photograph) mode, Raw Data (initial data) mode, ITU-R BT.656 and ITU-R BT.601 mode.
VIU supports to accept RGB and yuv data.The RGB data that the needs that receive are shown pass to lcd controller by the CAM_AHB bus or are stored among the RAM by the RAM controller, and the yuv data of the needs storage that receives is stored among the RAM by CAM_AHB bus and RAM controller.VIU sends interrupt signal by the ARM_DAHB control bus to ARM after the RAM controller transmits the RGB data of every frame or partial frame or yuv data and finishes.
The RAM controller: receive RGB data or yuv data that VIU passes over, these RGB data or yuv data are stored among the RAM, these RGB data or yuv data can be read by the ARM_DAHB control bus by ARM.The RAM controller can be static RAM (SRAM) storage (SRAM) controller, also can be dynamic ram storage (DRAM) controller.
Arm processor: the data mode of configuration image transducer and VIU.According to the interrupt signal that VIU passes over, utilize the RAM controller that RGB data or the yuv data stored among the RAM are read, carry out corresponding data processing, as form adjustment, compression etc.Then, the RGB data that the needs after handling are shown pass to lcd controller by ARM_DAHB, and the yuv data that the needs after handling are stored passes to nonvolatile memory by ARM_DAHB.
General RGB data are handled by camera and VIU, VIU directly the RGB data are exported to lcd controller in order to demonstration without arm processor.Yuv data then needs to compress processing through JPEG, MPEG, this process can be finished by the software of arm processor, also can finish by other hardware accelerator, data after arm processor or hardware accelerator will compress, write non-volatile memory, as MMC (Multi Media Card, multimedia storage card) etc.
Lcd controller: the RGB data that the needs that reception ARM or VIU pass over show, show to the LCD panel this RGB data passes.In actual applications, can use other display unit, such as, LCM (LCD Module, liquid crystal display module) replaces above-mentioned lcd controller.Integrated lcd controller and driver among the LCM, at this moment system needs the RGB data that a LCD interface shows in order to transmission LCD, and the RGB data that the needs that ARM or VIU pass over show will transfer to LCM by this LCD interface.
Nonvolatile memory: the yuv data after the processing that reception ARM passes over, this yuv data is stored.This nonvolatile memory can be storage mediums such as Flash RAM (Nand Flash or NorFlash), MMC, micro harddisk, disk.
Describe the method for the invention in detail below in conjunction with accompanying drawing, based on said apparatus, the concrete handling process of the embodiment of method of carrying out Video processing of the present invention comprises the steps: as shown in Figure 3
Step 3-1, VIU receive the DID that imageing sensor passes over, and this DID is exported to RAM controller or lcd controller.
At first, imageing sensor carries out the collection of DID, and RGB or yuv data load mode according to the ARM configuration pass to VIU with rgb image data or the YUV pictorial data that collects.
VIU is according to the RGB or the VIU data mode of ARM configuration, by the mode of operation of selecting (directly camera mode, Raw Data mode, ITU-R BT.656 mode or ITU-R BT.601 mode), the RGB data that the yuv data that the needs that receive are stored maybe needs to show pass to the RAM controller by the CAM_AHB bus.
VIU is after the RAM controller transmits the RGB data of every frame or partial frame or yuv data and finishes, send interruption to ARM, the RGB data or the yuv data transmission of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finish, ARM can be from RAM reading of data.
Above-mentioned VIU and RAM controller adopt ping-pong mechanism on image processing, it is the space of a frame (such as space A and space B) that VIU and RAM controller need distribute two capacity, is example with VIU, and the concrete handling process of above-mentioned ping-pong mechanism is as follows:
(1), the address data memory of configuration VIU is space A, starts VIU work; The operation of the address data memory of above-mentioned configuration VIU can realize by software.
(2), after VIU receives frame data, this time space A is write full, the initial memory address of software arrangements VIU next frame data is a space B, simultaneously the frame data among arm processor or the hardware-accelerated cell processing of the image space A;
(3), before VIU is received the next frame data by space B, if software has been finished the processing of the frame data among the A of space, the address data memory that then disposes VIU is space A, continues to receive data by space A;
When after VIU is received the next frame data by space B, but software is not still finished the processing of the frame data among the A of space, then software both can abandon when the frame data among the A of the space of pre-treatment then handle frame data in the space B, one frame data that also can abandon in the space B continue to receive the next frame data by VIU, after perhaps the frame data among the A of waiting space are handled, remove to handle the frame data in the space B again, dispose VIU simultaneously and continue to receive data by space A.Repeated execution of steps 1.
Step 3-2, RAM controller pass to RAM with the RGB that receives or VIU pictorial data and carry out buffer memory.
Step 3-3, ARM read the RGB or the VIU pictorial data of buffer memory among the RAM, and the line data of going forward side by side passes to nonvolatile memory or lcd controller after handling.
Carrying out image when showing, ARM reads the RGB data of the present frame of buffer memory among the RAM by the ARM_DAHB control bus, and makes corresponding data processing according to the corresponding interrupt signal that the VIU that receives passes over, as the form adjustment etc.Then, RGB data after handling are transferred to lcd controller by ARM_DAHB, and (perhaps ARM does not handle the RGB data, but directly the RGB data are passed through the AHB_DAHB bus transfer to lcd controller by VIU), lcd controller shows to the LCD panel this RGB data passes.
When carrying out the image storage, the corresponding interrupt signal that ARM passes over according to the VIU that receives, the yuv data of the present frame of buffer memory among the RAM is read, and made corresponding data processing, as JPEG (JPEG (joint photographic experts group)) compression or MPEG (active images expert group) compression etc.Yuv data after will handling then transfers to nonvolatile memory by ARM_DAHB, and as storage mediums such as Flash RAM (Nand Flash or Nor Flash), MMC, micro harddisk, disks, this nonvolatile memory is stored this yuv data.
When finishing camera function, system will image show and image storage between switch.The image demonstration is used for preview, and the image storage is used to capture photo.
When finishing camera function, the preview process is with taking pictures preview, the shooting process is stored except image, also need on lcd screen, show the current video recording of storing, therefore arm processor (perhaps image hardware handles accelerator module) is read the yuv data among the RAM in real time, convert rgb image data to, output to and be used in the lcd controller showing.
In actual applications, described ARM_DAHB data/address bus can also be AXI (advanced extensive interface) or Wishbone (chip internal interconnect bus).
The present invention also provides other 4 embodiment of the described device of the invention described above, and wherein embodiment 2 mainly adopts the conversion of being finished YUV-RGB by ARM software, and it realizes principle as shown in Figure 4.Concrete processing procedure is as follows:
VIU and imageing sensor adopt the yuv data load mode all the time, and VIU exports to the RAM controller with the yuv data that imageing sensor passes over by bus.
VIU is after the yuv data that the RAM controller transmits every frame (perhaps partial frame, some behaviors are handled unit) is finished, send interruption to ARM, the yuv data transmission of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finishes, ARM can be from RAM reading of data.
ARM utilizes the RAM controller that the current line yuv data of buffer memory among the RAM is read according to the interrupt signal that receives, and if desired this yuv data is stored, and after then ARM compresses this yuv data, is stored to nonvolatile memory.
If desired this yuv data is shown, then finish the conversion of YUV-RGB by ARM software; If carried out memory command this moment, then ARM with yuv data by the RAM controller by reading among the RAM, finish the conversion of YUV-RGB by ARM software.ARM is sent to lcd controller with the RGB data that are converted to, and lcd controller shows to the LCD panel this RGB data passes.
Embodiment 3 mainly adopts the conversion of being finished YUV-RGB by hardware, and it realizes schematic diagram as shown in Figure 5.Concrete processing procedure is as follows:
VIU and imageing sensor adopt the yuv data load mode all the time, and VIU exports to the RAM controller with the yuv data that imageing sensor passes over by bus.
VIU is after the yuv data that the RAM controller transmits every frame (perhaps partial frame, some behaviors are handled unit) is finished, send interruption to ARM, the yuv data transmission of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finishes, ARM can be from RAM reading of data.
ARM utilizes the RAM controller that the current line yuv data of buffer memory among the RAM is read according to the interrupt signal that receives, and if desired this yuv data is stored, and after then ARM compresses this yuv data, is stored to nonvolatile memory.
If desired this yuv data is shown, then finished the conversion of YUV-RGB by the hardware conversion device, the structure of this hardware conversion device mainly is an adder and multiplier, may be as required some video processing functions again, uphold as Y/C etc.Then, the hardware conversion device is given ARM with the RGB data passes that is converted to, and ARM is sent to lcd controller with these RGB data, and lcd controller shows to the LCD panel this RGB data passes.
The realization principle of embodiment 4 as shown in Figure 6.Concrete processing procedure is as follows:
VIU and imageing sensor adopt the RGB data mode all the time, and VIU exports to lcd controller with the RGB data that imageing sensor passes over by bus.The form of the input data that the form of the data of VIU output and lcd controller require must be consistent.Lcd controller shows to the LCD panel this RGB data passes.
VIU is after the yuv data that lcd controller transmits every frame (perhaps partial frame, some behaviors are handled unit) is finished, send interruption to ARM, the RGB data passes of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finishes, and ARM can be from the lcd controller reading of data.
Carry out calculation function if desired, then ARM reads the current line RGB data in the lcd controller according to the interrupt signal that receives, and finishes calculating by the RAM controller in RAM, and ARM is stored in result of calculation in the nonvolatile memory.
The realization schematic diagram of embodiment 5 as shown in Figure 7, concrete processing procedure is as follows:
When needs show pictorial data, the data mode of ARM configuration image transducer and VIU is RGB, VIU exports to lcd controller with the RGB data that imageing sensor passes over by bus, and lcd controller shows to the LCD panel this RGB data passes.
VIU is after the RGB data that lcd controller transmits every frame (perhaps partial frame, some behaviors are handled unit) are finished, send interruption to ARM, the RGB data passes of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finishes, and ARM can be from the lcd controller reading of data.Perhaps do not send interruption, VIU repeats the process of this demonstration.
When needs are stored pictorial data, the data mode of ARM configuration image transducer and VIU is YUV, VIU exports to the RAM controller with the yuv data that imageing sensor passes over by bus, VIU is after the yuv data that the RAM controller transmits every frame (perhaps partial frame, some behaviors are handled unit) is finished, send interruption to ARM, the yuv data transmission of notice ARM present frame (perhaps unit is handled in partial frame, some behaviors) finishes.
ARM utilizes the RAM controller to read view data from RAM according to the interrupt signal that receives, and finishes the image storage with being stored in nonvolatile memory after the data compression.
The structure of a portable terminal that has camera function of having used device of the present invention as shown in Figure 8.
This terminal has adopted the MT series camera chip of Micron company, adopts GPIO that the serial line interface (SDA, SCLK) of this chip is configured, and also can adopt other special purpose interface (as I
2C) serial line interface to this chip is configured.
The video interface signal and the VIU of this chip join, and VIU receives the data image signal of this chip output.The interrupt signal of VIU has been received on the vectored interrupt controller VIC, controls its interruption by VIC.Image processing flow process in the terminal SOC chip is identical with the handling process of the described method of the invention described above.
The structural representation of above-mentioned VIU as shown in Figure 9.VIU has four class interfaces: Video Input (VI), AHB Master, AHB SIave, interrupt interface.The VI interface is used to receive the video data of CCD/CMOS imageing sensor output, also can accept the video data of ITU-R BT.656/601 agreement, and host-host protocol is by software arrangements.The AHB Master Interface is used for output image data to ahb bus, and this layer ahb bus can adopt dma mode, directly is articulated on the memory, realizes image data storage.AHB Slave interface is used for system configuration VIU internal register.Interrupt signal is used for interrupting to the request of microprocessor, obtains the high speed processing response.
The VI interface is caught the ranks synchronizing signal of CMOS sensor in real time, video data is stored to the FIFO of VIU inside by comp_data.The FIFO size is 64 * 32bit, is divided into 4 groups, every group of data that 16 32bit are arranged.Whenever having stored one group of data, FIFO Controller sends read data request by buf_trans_req to IMAC.IMAC sends AHB read request control signal req and burst transmission type signal burst according to request type req_type to AHB Master module.IMAC also produces start_addr according to internal counter.
AHB Master has only write operation.When the CAM bus is idle, AHB Master sends the req_ack signal to IMAC, whenever finish frame burst transmission, send response signal ready, IMAC is according to this response signal ready, sending FIFO to FIFO Controller reads to enable buf_rd_en and reads address buf_rd_addr[5:0], control FIFO sense data.The VI interface is the camera clock zone, and remainder is the bus clock territory, and both are undertaken by FIFO and CAS module synchronously.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (13)
1, a kind of device that carries out Video processing is characterized in that, comprising: imageing sensor, video interface unit VIU and advanced reduced instruction set computer microprocessor ARM, wherein:
Imageing sensor: be used for the capturing digital image data, the data mode according to the ARM configuration passes to VIU with the DID that collects;
VIU: be used for data mode, receive the DID that imageing sensor passes over according to the ARM configuration, with this DID output, and to ARM transmission interrupt signal;
ARM: the data mode of configuration image transducer and VIU, the interrupt signal that passes over according to VIU passes to after the DID of VIU output handled and shows or storage device.
2, device according to claim 1 is characterized in that, also comprises:
Random access memory ram controller: receive and the three primary colors RGB data or the component yuv data of control VIU output, these RGB data or yuv data are passed to RAM carry out buffer memory.
3, device according to claim 2 is characterized in that, also comprises:
Display controller: receive ARM and utilize the RAM controller to read, and RGB data after treatment or that VIU passes over, these RGB data are shown;
Nonvolatile memory: receive ARM and utilize the RAM controller to read, and yuv data after treatment, this yuv data is stored.
4, device according to claim 3 is characterized in that, described display controller is: liquid crystal display lcd controller or liquid crystal display module.
5, device according to claim 3 is characterized in that, described nonvolatile memory is: flash memory Flash RAM or multimedia storage card MMC or micro harddisk or disk.
6, a kind of method of carrying out Video processing is characterized in that, comprises step:
A, imageing sensor pass to VIU according to the data mode that ARM disposes with the view data that collects;
B, described VIU export by the described view data that data/address bus will receive according to the data mode of ARM configuration.
7, method according to claim 6 is characterized in that, described steps A specifically comprises:
Imageing sensor passes to VIU according to the RGB data or the yuv data load mode of ARM configuration with rgb image data or the YUV view data that collects.
8, according to claim 6 or 7 described methods, it is characterized in that described step B specifically comprises:
VIU passes to lcd controller by data/address bus with the rgb image data that receives according to the RGB data mode of ARM configuration, and lcd controller shows these RGB data.
9, method according to claim 8 is characterized in that, described step B also comprises:
Lcd controller is with the RGB metadata cache that receives, ARM reads and converts to the YUV view data with described rgb image data, carry out data processing again, the view data after handling is exported to nonvolatile memory by data/address bus, nonvolatile memory is preserved this view data.
10, method according to claim 9 is characterized in that, described data processing comprises: JPEG (joint photographic experts group) JPEG compression or the MPEG of active images expert group compression.
11, according to claim 6 or 7 described methods, it is characterized in that described step B specifically comprises:
B1, VIU pass to RAM controller by data/address bus with the rgb image data that receives according to the RGB data mode of ARM configuration, and the RAM controller passes to RAM with described rgb image data and carries out buffer memory;
B2, ARM read the rgb image data of buffer memory among the described RAM, and the line data of going forward side by side is handled, and the view data after handling is exported to lcd controller by data/address bus, and lcd controller shows these RGB data.
12, according to claim 6 or 7 described methods, it is characterized in that described step B specifically comprises:
B3, VIU pass to RAM controller by data/address bus with the YUV view data that receives according to the yuv data load mode of ARM configuration, and the RAM controller passes to RAM with described YUV view data and carries out buffer memory;
B4, ARM read the VIU view data of buffer memory among the described RAM, and the line data of going forward side by side is handled, and the view data after handling is exported to nonvolatile memory by data/address bus, and the view data after nonvolatile memory will be handled is preserved.
13, method according to claim 12 is characterized in that, described step B4 also comprises:
ARM reads the YUV view data of buffer memory among the described RAM, and convert the YUV view data of reading to rgb image data, the line data of going forward side by side is handled, and the view data after handling is exported to lcd controller by data/address bus, and the view data after lcd controller will be handled shows.
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| US8194146B2 (en) | 2008-01-11 | 2012-06-05 | Mediatek Inc. | Apparatuses for capturing and storing real-time images |
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| EP2012535B1 (en) * | 2007-07-03 | 2018-02-14 | MediaTek Inc. | Direct interface of camera module to general purpose i/o port of digital baseband processor |
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| CN101247475B (en) * | 2007-05-29 | 2011-01-05 | 北京思比科微电子技术有限公司 | Apparatus and method for image capturing and camera shooting |
| EP2012535B1 (en) * | 2007-07-03 | 2018-02-14 | MediaTek Inc. | Direct interface of camera module to general purpose i/o port of digital baseband processor |
| US8194146B2 (en) | 2008-01-11 | 2012-06-05 | Mediatek Inc. | Apparatuses for capturing and storing real-time images |
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