參數(shù)資料
型號(hào)： VV6501
廠商： 意法半導(dǎo)體
英文描述： DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
中文描述： 雙模式數(shù)字相機(jī)協(xié)處理器
文件頁(yè)數(shù)： 13/44頁(yè)
文件大?。?/td> 351K
代理商： VV6501
ADCS 7283313C
13/44
STV0681
Detailed Features
2.5
PC interface options and software support
USB interface (full speed 12Mbit per second maximum) and RS232 interface (115.2kbaud) are
supported by the chipset, with driver software available from STMicroelectronics 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 Microsoft 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 Microsoft 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 second per image
for a CIF image (0.6 second for a VGA image), plus post processing time per image.
For USB interface details, see
Section 4.3
.
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 4.4
.
Note:
Actual post processing time after RS232 download also depends on PC performance
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