Sharp Technical Journal(STJ)is a hard copy publication whose primary purpose is to report the research results of Sharp Corporation. STJ is published three times a year and distributed to companies, government offices, universities, and public libraries. As most articles are written in Japanese language, STJ is distributed primarily in Japan. However, some articles are translated into English and offered here in an electronic form. If interested, readers are encouraged to download PDF files and print them for personal use. Full copies in Japanese language are also available in the electronic form.