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VV6411C036 Datasheet(PDF) 1 Page - STMicroelectronics |
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VV6411C036 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 44 page  March 2003 ADCS 7283313C 1/44 STV0681 DUAL-MODE DIGITAL CAMERA CO-PROCESSOR ® DESCRIPTION STMicroelectronics Imaging Division has produced the camera co-processor STV0681 which, used with CIF/VGA sensors as part of a low cost dual- mode camera chipset, allows a new line of low cost cameras or toy products to be brought to the market. STV0681 is a mask ROM version of STV0680B, programmed with v3.00 Firmware. FEATURES ST have maintained the standard features already available in the successful STV068B chipset, including: q Support for VV6411 (CIF) and VV6501 (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 Audio record/playback and “Delete Last” function q Custom sounds playback (e.g. “Talking” or “Musical” camera) q Support for an OEM Flashgun module 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. 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. q Quick Power Down (by holding Mode Button). q “Delete Last” Function Audio Record and Playback The enhanced features included in STV0681 allow audio memos to be recorded at a sampling rate of 11kHz, by adding a microphone and comparator chip, and by utilizing the pre-amplifier included in CIF/VGA sensors such as VV6411 and VV6501 respectively. These sounds can be uploaded to the PC over USB or RS232, and played back using a Software application developed by the OEM using the SDK. Demonstration PC software with source code is available with the Evaluation Kit (EVK). With suitable OEM software, the camera could even be used to record comments about pictures or video clips in a “dictaphone” fashion, with the audio commentary played back when viewing the pictures/video. Recorded audio sounds can also be played back on the camera, with the addition of an amplifier chip and speaker or headphone socket. By auto-detecting hardware, STV0681 will only enable these additional functions if audio hardware is fitted. Actual hardware implementation is the subject of a separate STV0681 Reference design (see Chapter 10). Evaluation Kit and Reference Design Evaluation kits are available for STV0681 features. Precise design guidelines are available from ST as a reference design manual (see Chapter 10). Note: Simultaneous audio record and continuous video capture is not possible. |
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