ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,706,790, issued on Aug. 11, was assigned to Marvell Asia Pte Ltd (Singapore).
"Physical layer frame format for WLAN" was invented by Hongyuan Zhang (Fremont, Calif.), Mingguang Xu (San Jose, Calif.) and Yakun Sun (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A first communication device generates a PHY preamble of a PHY data unit to include a first OFDM symbol corresponding to a legacy signal field, which includes i) a length subfield, and ii) a rate subfield. The length subfield and the rate subfield indicate a duration of the PHY data unit, and the legacy signal field is formatted according to a legacy second communication protocol....