US Patent Issued to NTT on May 19 for "Optical transmission system, transmission apparatus, receiving apparatus and method for device characteristic estimation" (Japanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,634,015, issued on May 19, was assigned to NTT Inc. (Tokyo).

"Optical transmission system, transmission apparatus, receiving apparatus and method for device characteristic estimation" was invented by Masanori Nakamura (Musashino, Japan), Takeo Sasai (Musashino, Japan), Etsushi Yamazaki (Musashino, Japan) and Yoshiaki Kisaka (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transmission apparatus causes a digital-to-analog conversion unit to perform digital-to-analog conversion on transmission signals pre-equalized by using a compensation filter, then converts electrical signals into optical signals, and outputs the optical signals. A rec...