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PDF ( 数据手册 , 数据表 ) VV6500

零件编号 VV6500
描述 DUAL-MODE DIGITAL CAMERA CHIPSET
制造商 STMicroelectronics
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VV6500 数据手册, 描述, 功能
® STV0680B+ VV6410/6411/6500
DUAL-MODE DIGITAL CAMERA CHIPSET
DESCRIPTION
STMicroelectronics Imaging Division has enhanced
the feature set of the STV0680B low cost dual-
mode camera chipset to allow a new line of low cost
cameras or toy products to be brought to the
market.
STANDARD FEATURES
ST have maintained the standard features already
available in the successful STV0680B-001 chipset,
including:
q STV0680B-003 fully backward compatible
with STV0680B-001
q Support for VV6410/6411 (CIF) and VV6500
(VGA) CMOS imaging sensors.
q Support for SDRAM sizes 16MBit (up to 20
CIF images) or 64Mbit (up to 80 CIF or 26
VGA images).
q Low resolution “economy” mode allows for
more images to be stored.
q High frame rate web cam (tethered video)
over USB.
q Automatic anti-flicker exposure control.
q Image up load over RS232 or USB.
q Driver support for Win98/Win2k/WinME and
MacOS 8.6/9.0/9.1.
q Continuous capture while untethered (except
when Flashgun enabled) and downloading to
AVI file format
q Power-saving “stand-by” mode which
maintains memory contents, as well as
generally low power consumption.
q Simple user interface including 2 buttons,
status LCD display, and buzzer.
q Evaluation Kit (EVK) available.
q Software Development Kit (SDK) allows OEM
PC Software applications to be written.
NEW FEATURES AVAILABLE IN STV0680B-003
q Audio record/playback and “Delete Last”
function
q Custom sounds playback (e.g. “Talking” or
“Musical” camera)
q Flashgun support
q Quick Power Down (by holding Mode
Button).
Audio Record And Playback
The enhanced features included in STV0680B-003
allow audio memos to be recorded, stored in
SDRAM, and uploaded to the PC over USB or
RS232, to be played back using an OEM software
application developed using the SDK
With the addition of playback hardware, recorded
audio sounds can also be played back on the
camera, and it is possible to download a set of
custom sounds from the PC to allow (e.g.) shutter
“Click-Whirr”, or for a “Talking Camera”. This has
limitless possibilities for OEM language
customising or licensing.
Flashgun Support and “Delete Last” Function
STV0680B-003 includes flashgun support for an
OEM flashgun module. An additional user interface
function is available in STV0680B-003 which allows
the user to delete the last image, continuous clip or
audio memo which was captured or recorded.
Evaluation Kit and Reference Design
Evaluation kits are available for both standard
features and enhanced STV0680B-003 features.
Precise design guidelines are available from ST as
a separate STV0680B Reference design manual
(see Chapter 12).
Note: Simultaneous audio record and
continuous video capture is not possible.
September 2001
Version 3.4
1/63







VV6500 pdf, 数据表
Introduction
STV0680B + VV6444/6410/6500
q A greater number of images can be stored when ‘Low’ resolution mode is enabled (e.g. 80
QCIF images with 16Mbit memory, 107 QVGA images with 64Mbit memory). See Table 3.
q Automatic anti-flicker exposure and gain control
1.4.2
Image features (STV0680B-003)
q All image features for STV0680B-001 are supported.
q Support for flashgun.
1.4.3
User features on camera (STV0680B-001)
q Self-timer mode allows a picture to be captured after several seconds.
q Twin 7 segment LCD panel supported - showing number of pictures left, and modes.
q Picture counter helps the user to know how much memory is left.
q Un-tethered ‘Continuous’ mode allows capture of image sequences for storage in memory and
subsequent download to PC.
q Piezo buzzer indicates a number of useful events to the user, e.g. whether enough light is
present for picture capture, etc.
q Indicator LED.
q “Clear all” function clears camera.
q “Low Resolution” mode increases number of images which can be captured by reducing image
resolution.
1.4.4
User features on camera (STV0680B-003)
q All user features of STV0680B-001 are supported.
q Audio Record function (if audio record hardware detected) allows sounds to be recorded.
q Audio Playback function (if audio playback hardware fitted) allows sounds which have been
recorded to be played back.
q “Delete last” function allows user to delete audio memos, pictures or continuous clips, deletion
must be carried out “most reset first”.
q Camera can be configured by the user to play custom sounds at certain functions, using a PC
application.
q “Go to sleep” function, whereby the camera can be put into standby mode while untethered.
1.4.5
User features on PC software (STV0680B-001)
PC software allows a number of features, including fast download of thumbnail images for picture
selection, and automatic detection and correction of sensor defects. The driver compatibility
includes:
q TWAIN driver to suit all TWAIN compatible imaging applications
q Video for Windows PC driver for tethered video mode (through USB), available at all
resolutions, with fastest framerates at QCIF resolution
q AVI video file creation from image sequences captured in ‘continuous’ mode
q Quicktime Video driver and Adobe Photoshop stills plug-in for Mac
Custom OEM PC software can be developed by using the SDK (for SDK availability, contact ST), to
upload thumbnails/still images or ‘continuous’ images, e.g. for AVI file creation.
8/63 Version 3.4







VV6500 equivalent, schematic
Camera modes of operation
3 Camera modes of operation
STV0680B + VV6444/6410/6500
This section refers to the two switches as discussed in section Section 2.2.1
q “Mode”: connects GPIO0 pin of STV0680B to GND when pressed
q “Shutter”: connects GPIO1 pin of STV0680B to GND when pressed
Pressing the mode switch repeatedly cycles through a series of modes as displayed on the LCD.
When a given mode is displayed it may be selected by pressing the shutter button. If an option is not
selected within 5 seconds the display will revert to showing the number of available pictures.
3.1 Modes available (STV0680B-001)
Normal: 20 / 80
Continuous Capture: Ct
Press Mode button
After 30sec of inactivity
Standby mode (untethered)
Self-Timer: St
Clear All: CL
Resolution: Hr / Lr
Figure 3 : STV0680B-001modes (CIF camera with 16Mbit SDRAM assumed)
Note that the number of images displayed depends on the sensor and SDRAM type - see Table 3.
16/63
Version 3.4










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