2,4 GHz wireless video monitoring system reference design
22 February 2006
Telecoms, Datacoms, Wireless, IoT
Vishay Intertechnology has released a complete Vishay RFWaves reference design for a wireless monitoring system using a fully-digital 2,4 GHz wireless link.
Target applications for the system include home intercoms, video baby monitors, home video monitoring systems, and business video surveillance. The new design uses the Vishay RFWaves RFW122-M-PA 1-Mbps direct sequence spread spectrum (DSSS) half duplex transceiver as its core component, along with a power amplifier for enhancing the operating range.
It provides an output power of 25 dBm and receiver sensitivity of -75 dBm while delivering realtime MPEG-4 compressed video. Vishay gives an operating range specification for the design of 100 metres indoors and 300 metres outdoors and says that the exceptional link robustness results in a very reliable and high-quality video and audio link.
The system consists of two units, a camera and a display screen. These are linked by a high-quality, one-way video link from the camera to the display screen and by a high-quality, two-way audio link between the two units.
The reference design allows multiple remote camera units to be connected to a single base unit. Each remote unit has a CMOS image sensor which provides video stream or still images. The base unit can store the video images and audio to an MMC/SD card, while a USB interface provides direct access to the stored data.
The system has been designed and tested to coexist with 802.11b/g and Bluetooth and is compliant with FCC, ETSI, and Telec regulations.
For more information contact [email protected].
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