First Chipset for 5GHz Wireless LAN Capable of Transferring Video Images

Matsushita Electric announced the development of a chipset consisting of a 5GHz wireless LAN signal processor designed for IEEE802.11a/e compliant wireless transfer of video images among home AV equipment, and high frequency radio chips featuring low power consumption, low distortion, and low noise. Samples of the new chipsets will be available from March 2003 at the price of 10,000 yen.

Most of the currently available chipsets for wireless LAN usage have been designed for the PC market, with its main purpose of transmitting data files. Wireless transmissions of video signals in the past required a powerful CPU or/and bulky external circuitry for adjusting wireless transfer delay and jitter, and so were unsuitable to install in AV devices. Furthermore, the short preamble period of wireless signals that comply with IEEE802.11a made it difficult to realize a fast diversity function that automatically selects and switches antennas according to each received packet.

The imbedded video transfer function of Panasonic's new 5GHz wireless LAN signal processor enables easier wireless transfer of video images. It is also equipped with a function for automatically switching antennas according to the strength of signals being received, realizing highly reliable wireless transfer, even in multipath fading environment. With these new functions, consumers can enjoy high quality digital video images, such as Broadcast Satellite, Communications Satellite, and terrestrial digital broadcasts, broadband Internet, and high-definition recordings stored on their home server. The images can be monitored from any place in the house, making the concept of the "wireless home AV networks" a reality.

Panasonic is the first in the industry to provide input/output ports that can directly transmit the MPEG-TS (Transport Stream) signal, the standard for video transfer format, and to include the automatic compensation function for adjusting the time delay and jitter which may occur in wireless transmitting, enabling easy video transfer. With its fast diversity function, which automatically detects the signal level of each received wireless packet and switches antennas to match it, the error caused by multipath fading has been reduced to a tenth of the earlier models. The 5GHz high frequency radio chip also features low power consumption, low distortion, and low noise.

Panasonic's exclusive technologies for MPEG-TS/wireless-network packet conversion and wireless video transfer synchronization, fast diversity adaptable to IEEE802.11a-compliant signals, and its high frequency SiGe (Silicon Germanium) process circuit design, which enables low current and high frequency operation, have contributed to the development of this new chipset.

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