參數(shù)資料
型號(hào)： VV6410C036
廠商： 意法半導(dǎo)體
英文描述： DUAL-MODE DIGITAL CAMERA CHIPSET
中文描述： 雙模式數(shù)字相機(jī)芯片組
文件頁(yè)數(shù)： 14/63頁(yè)
文件大小： 563K
代理商： VV6410C036
Detailed features
STV0680B + VV6444/6410/6500
14/63
Version 3.4
audio record and “delete last” functions into the user interface. The audio sample rate is 11.025kHz,
and the signal is digitised using a successive approximation A-D converter with 8 bits resolution.
The SDRAM stores 1 second of Audio recording per 11k Bytes of memory.
2.4.2
Playback
A camera which includes STV0680B-003 and an amplifier, speaker/headphone socket, and other
periphery, can be used to playback sounds which were either recorded on the camera or
downloaded from the PC.
The quality of Audio playback is largely dependant on the type of speaker used, and on the correct
mounting of the speaker in the camera plastics.
2.5
PC interface options and software support
Either USB Interface (full speed 12Mbit/sec. max.) or RS232 interface (115.2Kbaud) is supported
by the chipset, with driver software available from ST for both. The interface type is auto-detected
by the chipset. PC software can be one of the following:
1
Simple image upload demonstration software supplied by ST, allowing uploading of stills or
‘continuous’ images. This software should not be supplied as an end-user product.
2
TWAIN driver to suit all TWAIN compatible imaging applications
3
Video for Windows driver for tethered video mode (USB only)
4
Custom end-user software developed by OEM using SDK (for SDK availability, contact ST).
The SDK is supplied by ST as a 32-bit DLL format, running on Windows 98, and accessed
through a documented software interface. This provides the basis for developing a custom
software application for uploading stills and/or video.
2.5.1
USB
Complete images (displayed as either thumbnails or in full resolution), or the entire SDRAM
contents (e.g. for uploading continuously captured image sequences, recorded using ‘Continuous
Capture’ mode) can be downloaded through USB, and USB connection also allows for tethered
video mode to be activated by the USB driver.
Thumbnail image download is extremely fast for the entire memory contents in the camera. Once a
picture is selected for download, full image download takes approximately 0.15 seconds per image
for a CIF image (0.6 seconds for a VGA image), plus post processing time per image.
For USB interface details, see
Section 4.4
.
Note:
Actual USB download and post processing time also depends on PC performance and USB bus
loading
2.5.2
RS232
Thumbnails of images, complete stored images, or the entire SDRAM contents can be downloaded
through RS232, but tethered video is not supported.
Once a picture is selected for download, full image download takes approximately 10 seconds per
image for a CIF image (around 30 seconds for a VGA image), plus post processing time per image
(of the order of 1 second approximately).
For RS232 interface details, see
Section 4.5
.
Note:
Actual post processing time after RS232 download also depends on PC performance
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