WO2005002211A1 - デジタル撮影装置 - Google Patents
デジタル撮影装置 Download PDFInfo
- Publication number
- WO2005002211A1 WO2005002211A1 PCT/JP2003/008242 JP0308242W WO2005002211A1 WO 2005002211 A1 WO2005002211 A1 WO 2005002211A1 JP 0308242 W JP0308242 W JP 0308242W WO 2005002211 A1 WO2005002211 A1 WO 2005002211A1
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- WO
- WIPO (PCT)
- Prior art keywords
- area
- data
- camera
- host
- camera module
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Definitions
- the present invention relates to a digital imaging device including a camera module and a host module, and more particularly, to a structure for efficiently exchanging control data between the host module and the camera module, and a hardware of the camera module.
- the present invention relates to a structure for performing a wear test and a software test.
- Such an information device with a built-in camera has a housing that covers the entire device, so it is difficult to see from the outside, but the camera part is often manufactured as an independent power module. This is because modularizing the camera section makes it easier to combine the same camera module with a variety of different mobile phones and PDAs.
- mass production is expected, a reduction in manufacturing prices can be expected. Therefore, it is understood that such an information device with a built-in camera is composed of a host module that controls the telephone function and the PDA function and a camera module that controls the camera function, and the two modules are connected by an interface. Can be.
- the camera module includes an image sensor that converts light into an electric signal, LED illumination, and an image data construction unit that constructs image data that can be displayed on a computer from the output signal of the image sensor.
- a user In a powerful information device with a built-in camera, a user usually takes a picture using a user interface provided in a host module. Normally, the host module controls the camera functions of the camera module. The following two methods are conceivable for this control method.
- the first method is to control each component of the camera module directly (IC of the host module).
- the host IC directly controls the timing of data collection by the image sensor of the camera module, various parameters related to image processing of the image data, and on / off of the LED illumination.
- the processing device provided in the host IC is provided in the IC of the camera module (camera IC) and specifies the address of the control register connected to the image sensor, etc., and directly outputs the control parameters. It is done in.
- the control of the camera IC is performed by the processing device of the host IC designating the address of the control register and outputting the control parameters, so that when the register map of the camera IC is changed. If the control parameters are changed during development or during development, the software of the host IC must be changed.
- the camera IC also has a processing unit consisting of a CPU and software, the host IC sends a message-based command to the camera IC, and the camera IC interprets the message command so that the camera IC itself
- each component is controlled directly. For example, when the host I transmits a message command of “start photographing” to the camera IC, the camera IC prepares the control parameters of the image sensor required for “start photographing” in its own processing device, and registers the image sensor control register. The prepared control parameters are output to the master.
- JT AG may be used as a method of verifying the state of the control register.
- JTAG is a board test method that was standardized in 1990 as IEEE 1149.1.
- An IC that supports JTAG has a dedicated signal line for inputting and outputting a test message command and the result of processing it, and an external computer tests the IC through this signal line.
- the camera IC complies with JTAG, the value of the control register can be checked.
- JT AG the camera IC must have a JT AG test circuit and an input / output unit, which increases costs. Disclosure of the invention
- a camera module that creates image data by performing photographing, a host module that stores the image data, an interface unit that connects the camera module and the host module, the camera module and the host
- a digital imaging device comprising: a module and a housing integrally holding the interface unit; wherein the host module has a host CPU connected to the interface unit; And a register having a first area and a second area distinguished by an address from the first area, and an interrupt by being connected to the register and writing data to the first area.
- a receiving CPU; and the host CPU One type of data is prepared, and the first type of data is written to the first area through the interface unit; the camera CPU writes a second type of data corresponding to the written first data. Preparing the second type of data, and writing the second type of data to the second area;
- the address of the second area is designated and the data is directly read from the second area through the interface, and the host CPU further comprises an address of the second area.
- Data can be directly written into the second area through the interface by designating a digital photographing device.
- the first type of data is a message command representing a predetermined function.
- the second type of data is a hardware control parameter.
- the camera module may include a solid-state imaging device, and the second type of data may be a control parameter of the solid-state imaging device.
- the power mel module may include an illumination device, and the second type of data may be a control parameter of the illumination device.
- the camera module further includes a plurality of lenses and a motor for moving at least one of the plurality of lenses, and the second type of data is It can be configured to be a control parameter.
- the host module has a telephone function.
- FIG. 1 is an external view of a camera-equipped mobile phone to which the present invention is applied.
- FIG. 2 is a hardware configuration diagram of a camera-equipped mobile phone to which the present invention is applied.
- FIG. 3 is a diagram schematically illustrating a state in which the host LSI controls the camera module.
- FIG. 1 is a ⁇ II diagram of a camera-equipped mobile phone to which the present invention is applied.
- Mobile phone with camera In the first case, the display 2, numeric keypad 3, function buttons 4, antenna 5, etc. are provided on the front side, and the camera unit 11, battery cover 9, etc. It has.
- the camera-equipped mobile phone 1 is very small and lightweight, and has a size and weight that makes it inconvenient to hold it with one hand or carry it in a handbag.
- the camera unit 11 includes a lens 7 and an LED illumination 8 and is configured as a camera module having an independent housing 10. The reason for making the camera unit an independent module is to make the camera module versatile so that it can be easily combined with other mobile phones and PDAs. Therefore, the camera-equipped mobile phone 1 in the present embodiment can be divided into the camera module 11 and the remaining part (host module).
- the function button 4 is used as an incoming / outgoing call, a shutter button for taking a picture, and the like.
- the user inputs a phone number from the numeric keypad 3 and presses the function button 4.
- the user holds the camera-equipped mobile phone 1 with the lens 7 facing the object, and checks the preview image taken by the camera module 1 1 on the display 2. Then, when the function button 4 is pressed, the photographing is performed, and the image data created by the photographing is stored in the recording device provided in the camera-equipped mobile phone 1.
- the camera-equipped mobile phone 1 includes the camera module 11 and the host module 12.
- the camera module 11 is in charge of shooting and image data creation, and the host module 12 is created.
- PDA functions such as telephone functions and schedule functions.
- Power camera module 11 includes lens 7, LED lighting 8, solid-state imaging device 13, A / D converter »14, image data constructor 16, JPEG compressor 17, bus 18, data interface 22, Equipped with control interface 23 etc. Power on bus 18
- the CPU 19, the memory 20, the register 45, etc. are connected, and the control interface 23 is also connected to the bus 18. From the register 45, a control line 46 extends to each hardware constituting the camera module, such as the solid-state imaging device 13, the A / D converter 14, and the image data builder 16.
- the hardware other than the lens 7, LED lighting 8, solid-state imaging device 13, and AZD converter 14 is provided as a camera LSI 41 in one chip.
- the host module 12 includes a data interface 28, a control interface 29, a host CPU 30, a temporary storage device interface 31, a temporary storage device 32, a main storage device interface 33, a main storage device 34, and a display device interface.
- An interface 35, a display device 36, an interface 37 for a keyboard, a keyboard 38, and the like are provided.
- the host CPU 30, the node 27, and the interfaces 28, 29, 31, 33, 35, and 37 are provided on a single chip as the host LSI 42.
- the host module 12 includes a baseband control unit 81, an antenna unit 82, and the like.
- the baseband control unit 81 is responsible for functions related to outgoing and incoming calls, and has a dedicated CPU.
- the host LSI 42 is responsible for functions other than making and receiving telephone calls, and in addition to processing image data transmitted from the camera module 11, functions such as controlling the keyboard 38, games, music playback, and timetables. Also in charge.
- the keyboard 38 includes a numeric keypad 3, a function button 4, and the like.
- the solid-state imaging device 13 of the camera module 11 for example, a CCD or a CMOS sensor can be used.
- the solid-state imaging device 13 performs imaging by converting light passing through the lens 7 into an electric signal.
- the output signal of the solid-state imaging device 13 is converted into digital data by the A / D converter 14.
- This digital data is called RAW data, but it is not image data that can be displayed on a computer or printed on a printing press.
- Image data is stored in the image data builder 16 Created by The image data constructor 16 first performs original image processing such as lens density correction and white balance on the RAW data.
- the red (R), green (G), and blue (B) components are extracted from the RAW data that has been subjected to the original image processing, and subjected to CFA (Color Filter Array) interpolation processing to obtain an RGB 3 plane.
- Create RGB format image data Further, processing such as contour enhancement and gamma correction is performed on the image data.
- the image data format is converted from RGB format to YUV format.
- the image data constituting one frame is sequentially created every one line or several lines, and the created image data is sequentially output to the JPEG compressor 17 for each created image data.
- image data of one entire frame is created from the output signal of the solid-state imaging device 13 obtained by one photographing.
- the created image data is transmitted to the host module 12 through the interfaces 22 and 28.
- the image data received by the host module is first temporarily stored in the temporary storage device 32.
- a typical example used for the temporary storage device 32 is an SDRAM.
- the host CPU 30 reads the data from the temporary storage device 32, performs a predetermined process, and displays the data on the display screen of the display device 36.
- the host CPU 30 reads the image data for storage from the temporary storage device 32 and stores it in the main storage device 34.
- the main storage device 34 includes a recording medium that keeps storing data even when the power of the camera-equipped mobile phone 1 is turned off. For example, a flash memory, a CF card, or an SD card can be used.
- the camera module 11 compresses the image data in advance by the Jurcom0 compression unit 17 and then outputs the image data to the camera module via the data interface 22. ⁇
- the register 45 of I41 includes a message area 48 and a parameter area 49.
- the message area 48 is an area for writing a message command.
- a message command is a command to perform a specific function, for example, “take a picture” or “turn on an LED light”, but does not directly change the state of hardware.
- the parameter area 49 is an area for writing control parameters. When a control parameter is written in a predetermined area of the parameter area 49, the state of hardware corresponding to that area immediately changes. For example, the LED lighting 8 is turned on, or the solid-state imaging device 13 is in the exposure mode.
- the message area 48 and the parameter area 49 are distinguished by an address.
- the host CPU 43 can access the message area 48 to write a message command, and can access the parameter area 49 to read and write control parameters. Have been.
- the host CPU 43 can directly access the message area 48 and the parameter area 49 to read and write data.
- the camera CPU 19 can read the contents of the message area 48 and write a control parameter to the parameter area 49 by specifying an appropriate address.
- the camera LSI 41 is configured to generate an interrupt in the camera CPU 19 when the message area 48 of the register 45 is written (reference number 51). Further, a control line 46 extends from the parameter area 49 to the hard disk 15 constituting the camera module 11.
- the hardware 15 shown in Fig. 3 is composed of various camera modules, such as the solid-state image sensor 13 in Fig. 2, the AZD converter 14, LED lighting 8, the image data construction unit 16, and the JPEG compressor 17. It is an abbreviation for devices that specifically implement various functions.
- one control line 46 is not shown in FIG. 3, but actually, as shown in FIG. 2, each hardware has an independent control line.
- Parameter area 49 is a dedicated area for each hardware The Have, for each its dedicated area, corresponding control line 4 6 to hardware that is Shin Piteiru (see FIG. 2).
- the state of a dedicated area in the parameter area 49 changes, the change is transmitted to the corresponding hardware via the control line 46, and the hardware changes the state. For example, when the value of the dedicated area in the parameter area 49 corresponding to the LED lighting 8 changes, the LED lighting 8 turns on and off.
- the host CPU 43 When the host LSI 42 uses a function of the camera module, the host CPU 43 first sends a message command for calling the function to the camera LSI 41.
- the message command received by the camera LSI 41 is written to the message area 48 of the register 45.
- the host CPU 43 specifies the address and directly writes the message command to the area having the corresponding address in the message area 48.
- Writing to message area 48 causes an interrupt to camera CPU 19 (reference number 51).
- the camera CPU 19 receives an interrupt by writing a message command to the parameter area 49, the camera CPU 19 calls a message handler corresponding to the written message command from the memory 20.
- the message handler is implemented as firmware for the camera LSI.
- the called message handler causes the camera CPU 19 to write a plurality of control parameters into the parameter area 49 of the register 45 at programmed time intervals in accordance with the processing corresponding to the message handler (quoted). Number 52). More specifically, the camera CPU 19 is programmed with a plurality of control parameters by designating an address to the area having the corresponding address in the parameter area 49 in accordance with the processing corresponding to the message handler. Write directly at time intervals.
- the solid-state imaging device 13 may be in a mode for reading out electrical signals, a lens driving motor (not shown) may be driven in three steps for focusing and zooming, or the LED lighting 8 may be turned on or off. I do.
- the tests to be performed on the camera module 41 include a hardware test and a software test.
- the hardware test is a test for confirming whether each hardware of the camera module 41 can exhibit a predetermined function.
- the tester specifies the address by the host CPU 43 and directly controls the hardware 15 in a predetermined area of the parameter area 49 of the register 45 of the camera LSI 41. Write the parameters and observe the operation of hardware 15 after the control parameters are written. For example, when testing the data collection function using the solid-state imaging device 13, the tester specifies the address of the portion of the parameter area 49 related to the solid-state imaging device 13 by the host CPU 43, and sets the address to 100 000. 0 is output, and it is checked whether the solid-state imaging device 13 starts exposure.
- the address is designated and 1 1 0 0 0 1 is output, and it is checked whether or not the solid-state imaging device 13 ends the exposure.
- writing the control parameters related to a certain function in the parameter area 49 and observing whether or not each hardware performs the desired operation is based on all of the hardware constituting the camera module 11. By performing the above function, it is possible to confirm whether or not the hardware of the camera module 11 is operating normally.
- the software test is to confirm whether the firmware of the camera LSI functions properly.
- the tester writes a message command indicating a specific function to the message area 48 of the register 45 of the camera LSI 41 by designating an address by the host CPU 43.
- camera L The SI firmware prepares a plurality of hardware control parameters according to the processing for realizing the function by the camera CPU 19 and writes the control parameters in the parameter area 49 of the register 45. Therefore, the tester accesses the parameter area 49 of the register 45 by designating the address by the host CPU 43 and reads the written control parameters. Then, it is confirmed whether or not the written control parameter has a desired value.
- the tester first writes a “exposure start” message command to the message area 48 of the register 45 by the host CPU 43.
- the tester specifies the address of the portion relating to the solid-state imaging device in the parameter area 49 of the register 45 by the host CPU 43, reads the parameter value, and reads the value of the parameter. Check if it is.
- a message command indicating the initialization of the camera module is written in the message area 48, and then the parameter area 49 indicates the value indicating the initialization. Check if it is By performing such a test for all functions of the firmware, the firmware can be tested.
- the test of the camera module 41 can be performed without preparing a separate test device.
- register 45 contains a message area according to the address of the host CPU 43. If the parameter area can be distinguished, there may be more than one in the camera L S I 4 1 W
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003244013A AU2003244013A1 (en) | 2003-06-27 | 2003-06-27 | Digital imaging device |
JP2005503231A JP4231047B2 (ja) | 2003-06-27 | 2003-06-27 | デジタル撮影装置 |
PCT/JP2003/008242 WO2005002211A1 (ja) | 2003-06-27 | 2003-06-27 | デジタル撮影装置 |
US11/317,446 US7352965B2 (en) | 2003-06-27 | 2005-12-23 | Digital photographic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/008242 WO2005002211A1 (ja) | 2003-06-27 | 2003-06-27 | デジタル撮影装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/317,446 Continuation US7352965B2 (en) | 2003-06-27 | 2005-12-23 | Digital photographic device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005002211A1 true WO2005002211A1 (ja) | 2005-01-06 |
Family
ID=33549061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/008242 WO2005002211A1 (ja) | 2003-06-27 | 2003-06-27 | デジタル撮影装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7352965B2 (ja) |
JP (1) | JP4231047B2 (ja) |
AU (1) | AU2003244013A1 (ja) |
WO (1) | WO2005002211A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4571074B2 (ja) * | 2003-06-13 | 2010-10-27 | ノキア コーポレイション | 画像データの圧縮とサムネール画像の作成を行う電子機器、画像処理装置、データ構造 |
US20090113340A1 (en) * | 2007-10-29 | 2009-04-30 | Michael Bender | Method of generating event reminders in an electronic device |
US20100214428A1 (en) * | 2009-02-25 | 2010-08-26 | Research In Motion Limited | Method and mobile computing device for setting a pictorial reminder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084522A (ja) * | 1996-09-10 | 1998-03-31 | Sega Enterp Ltd | 電子カメラ及び情報記憶媒体 |
JPH11168612A (ja) * | 1997-09-30 | 1999-06-22 | Canon Inc | 画像処理方法、画像処理装置、画像入力装置、撮像装置、撮像システム、通信装置、通信システム及び記憶媒体 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5699277A (en) * | 1996-01-02 | 1997-12-16 | Intel Corporation | Method and apparatus for source clipping a video image in a video delivery system |
JP3929696B2 (ja) * | 2000-12-05 | 2007-06-13 | 富士フイルム株式会社 | カメラ |
GB0226014D0 (en) * | 2002-11-08 | 2002-12-18 | Nokia Corp | Camera-LSI and information device |
JP2004297632A (ja) * | 2003-03-28 | 2004-10-21 | Renesas Technology Corp | マイクロプロセッサ及び携帯通信端末 |
JP4571074B2 (ja) * | 2003-06-13 | 2010-10-27 | ノキア コーポレイション | 画像データの圧縮とサムネール画像の作成を行う電子機器、画像処理装置、データ構造 |
-
2003
- 2003-06-27 WO PCT/JP2003/008242 patent/WO2005002211A1/ja active Application Filing
- 2003-06-27 JP JP2005503231A patent/JP4231047B2/ja not_active Expired - Fee Related
- 2003-06-27 AU AU2003244013A patent/AU2003244013A1/en not_active Abandoned
-
2005
- 2005-12-23 US US11/317,446 patent/US7352965B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084522A (ja) * | 1996-09-10 | 1998-03-31 | Sega Enterp Ltd | 電子カメラ及び情報記憶媒体 |
JPH11168612A (ja) * | 1997-09-30 | 1999-06-22 | Canon Inc | 画像処理方法、画像処理装置、画像入力装置、撮像装置、撮像システム、通信装置、通信システム及び記憶媒体 |
Also Published As
Publication number | Publication date |
---|---|
US7352965B2 (en) | 2008-04-01 |
US20060244835A1 (en) | 2006-11-02 |
JPWO2005002211A1 (ja) | 2006-08-10 |
AU2003244013A1 (en) | 2005-01-13 |
JP4231047B2 (ja) | 2009-02-25 |
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